trykkstøping av sink

Hva er pressstøping? Alt du trenger å vite om metallstøping

Hva er pressstøping? Alt du trenger å vite om metallstøping

pressstøping
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This is a manufacturing process in which molten metal is forced using pressure to fill a mold cavity also known as die casting. The mold is usually of high-quality steel and hence the part can be produced in large quantities the term is used to mean the manufacture of many parts. The finished part is then produced by opening the mold after the molten metal is cooled and forms a solid layer. This kind of use of the process is mostly applied in making intricate metal used in the production of different parts that require high accuracy in measurement and polished surfaces. Die casting can be done on aluminium, zinc, and magnesium but other metals can also be used on a case depending on application and other requirements. Die casting is considered to be one of the expert manufacturing techniques in the conception of mass production of small to medium-sized components out of metals. The popularity of the method has been spread across automotive, aerospace, electronics, and industrial machines due to its ability to produce durable lightweight intricately tailored parts. However, this process is widely recognized for its ability to manufacture products with complex geometry that would be very hard to make using conventional techniques. How Die Casting Works Molding is the first part of the die-casting process. On one side of the mold, there is a half, and it is a half of a particular design to make the mold shaped like the final product. Cavities and cores are designed for the molds that are usually custom-made so that the part can be replicated as closely as possible. 1. Molten Metal Injection: Then the molten metal is injected into the mold cavity under high pressure to form the desired shape. The metal is usually heated to one degree above the melting strain to make it fluid. In die casting, the pressure that the molten metal is pushed into the mold can be from several thousand to tens of thousands of psi (pounds per square inch), to be sure that the molten metal gets into every detail of the mold. 2. Solidification: This occurs when the metal is injected into the casing cavity whereby it cools and the metal hardens. The quality of the casting depends upon the cooling rate. Additional modes of failure (shear, climb, and glide) come into play in this case and result in faster cooling higher strength better surface finish, and slower cooling which could result in more internal defects and lower mechanical properties. Water-cooling systems built into the mold are usually used to assist the cooling process. 3. Ejection: Following this, the metal is allowed to cool and solidify and it is then easy to remove the mold from the larger casting and eject the part. Then most of the time is used in the pushing out part from the mold using a mechanical ejector system. This depends on the complexity of the part that requires other extra steps, namely trimming and machining to deliver the final shape and dimension. 4. Quality Control: A quality check is then performed on a part after ejection. It can involve dimensional verification, visual inspection, and mechanical testing to confirm that the part is equal to or better than the requirements. High precision and repeatability are theoretically achieved in die casting. Types of Die Casting There are two types of Die casting, they are hot chamber die casting and cold chamber die casting. These are all good and have their advantages, limitations and ideal applications. 1. Hot Chamber Die Casting The process most suitable for metals such as zinc, magnesium, and lead is a hot chamber die casting since the process is done at high temperatures, and melting points. The injection system is installed inside the melting furnace in this way, the metal is always in contact with the chamber. Advantages: Disadvantages: 2. Cold Chamber Die Casting The metals that have higher melting points like aluminium, brass and copper are cast in cold chamber die casting. In this case, the molten metal is tapped from a second furnace injected into the cold chamber then into the mold cavity. Advantages: Disadvantages: The Comparison of Die Casting Methods: Hot Chamber vs. Cold Chamber Here is a comparison of the most common types of two die-casting methods, Feature Hot Chamber Die Casting Cold Chamber Die Casting Metal Compatibility Best for low-melting-point metals (e.g., zinc, lead) Best for high-melting-point metals (e.g., aluminium, brass) Cycle Time Faster cycle times Slower cycle times Mold Wear Higher mold wear due to direct contact with molten metal Lower mold wear Cost Lower cost for high-volume production Higher initial cost, but better for high-strength metals Complexity of Parts Good for simpler parts Better for more complex, larger parts Advantages of Die Casting It is one of the largest advantages that die casting is one of the main preferred methods of large-scale production of products from metal alloys. 1. High Precision and Accuracy There are many advantages of die casting, which makes it convenient to offer high die precision. This method of production is also widely used for the production of parts, which requires good dimensional accuracy which is very crucial as it defines tolerance levels required in a specific job. One should note that die casting is the only manufacturing technique that can produce given parts with the utmost complexities such as the intricacies of its geometries.  2. High Production Rates In terms of large volumes, die casting is very efficient. Parts are quickly and cheaply produced once the first mold is created with very little labor involved. The demand for simulated powders is particularly high in industries like automotive and electronics where large volumes of the same parts are required. 3. Complex Designs and Thin Walls Complex design can be achieved by die casting, which would be difficult or impossible to achieve by traditional manufacturing methods. The process can make parts with thin walls, and complex internal structures, and can accommodate undercuts; thus making it the

Å velge riktig støpefirma for legeringer: En komplett guide

Å velge riktig støpefirma for legeringer: En komplett guide

trykkstøping av aluminium, trykkstøpefirmaer
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Alloy die casting is essential to the manufacturing industry because it relies heavily on high precision, durable, and cost-effective metal components. In a revolutionary impact on modern manufacturing, this process has made possible the mass production of intricate metal parts to a very high standard of accuracy and consistency. By specialized companies which as alloy die casting companies, in service industries which as automotive, aerospace, electronics, medical, and heavy machines for building tailor resultant metal components in their specific areas of needs. A professional alloy die casting company makes use of the latest technologies and high-quality materials coupled with a strict quality control process to deliver your products that suit industry standards. If choosing the right company matters, you may choose, one way or another, between a truly reliable product that will last for years and a faulty component that will fail early. The article gives you a detailed overview of Alloy die casting, emphasizing its importance, benefits and the most essential factors to consider when choosing the best Alloy die casting company. Alloy die casting knowledge is essential if you’re a manufacturer seeking the manufacture of precisely engineered parts or a business in search of economic manufacturing options. What is Alloy Die Casting? The metal manufacturing process in which molten metal is injected into a mold (die) under high pressure is called alloy die casting. Implementation of this method is widely used for the production of complex shapes with tight tolerances. The common use of various metal alloys, such as aluminium, zinc, and magnesium, in die casting is because of their good strength properties and corrosion resistance. Types of Alloys Used in Die Casting Alloys used in die casting have a great effect on the selections in the process of die casting, it leads directly to the strength and weight, corrosion resistance and overall performance of the final product. Alloys that differ vary by different industries based on their mechanical properties, durability, and the end use necessary to them. The most commonly used alloys in die casting are mentioned below. 1. Aluminum Alloys A good thermal conductivity, combined with corrosion resistance and lightweight strength, means aluminium die casting is preferred by researchers and manufacturers the world over. In industries that require durable and relatively light components, this alloy type is used. Key Features: Applications: 2. Zinc Alloys Since it has high strength, low melting point and excellent precision, zinc is another commonly used alloy in die casting. For manufacturing small, detailed parts it is ideal. Key Features: Applications: 3. Magnesium Alloys Its lightness makes it extremely suitable to be used for industries seeking to cut weight without compromising on strength, hence this metal is named magnesium. Key Features: Applications: 4. Copper-Based Alloys Brass and bronze are examples of copper-based alloys which are high electrical conductors, corrosion resistant, and good wear resistors. Such alloys are used for applications where the electrical and thermal performance have to be superb. Key Features: Applications: Benefits of Working with a Reliable Alloy Die Casting Company The right alloy die company allows you to select high-quality products that follow industry standards. Here are the key benefits: 1. High Precision and Consistency A top die-casting company has good machinery and rigorous quality control measures to produce the dimensions with very few defects. 2. Cost-Effectiveness Die casting is a very efficient process that also reduces the material and energy costs of the final product significantly compared to other metal-forming processes. 3. Customization and Versatility A custom solution-based casting company is a reputable company that provides custom solutions that are based on particular industry necessities and provides different alloy options. 4. Faster Production and Short Lead Times Automated systems are used in modern die-casting companies to increase their speed of production and meet strict deadlines. 5. Durability and Strength Alloy die-cast parts are well known to be very durable, and thus suitable for use under demanding conditions. How to Choose the Best Alloy Die Casting Company When you select a die-casting manufacturer, you should consider the following: 1. Experience and Industry Expertise Check with the company’s track record, if it had experienced years doing alloy die casting, if its attempt in your industry was proven. 2. Quality Certifications and Standards Make sure the business follows the codec of the industry which might be: 3. Advanced Technology and Equipment To maintain accuracy and reduce the need for physical labor, a modern die-casting company will employ such equipment as a CNC machine, vacuum cast, and robotic automation. 4. Material Selection and Customization Have a company with multiple alloy options and customization so you can find the specific design that your company offers. 5. Strong Supply Chain and On-Time Delivery Efficient logistics and speedy delivery of products are brought about by reliable suppliers. 6. Prototyping and Testing Capabilities Very critical is to prototype and with rigorous quality testing (X-ray inspection and tensile strength) on the product. 7. Competitive Pricing Although price must not be the only consideration, a good die-casting firm can offer competitive prices without sacrificing quality. Industries That Rely on Alloy Die Casting 1. Automotive Industry 2. Aerospace Industry 3. Electronics Industry 4. Medical Equipment 5. Consumer Products Challenges in Alloy Die Casting and How Companies Overcome Them Alloy die casting is a well-known manufacturing process, which faces some challenges and that have an impact on quality, cost and sustainability. Innovative solutions are also implemented by leading alloy die-casting companies to overcome these problems resulting in high-quality production, optimized costs as well and minimized impact on the environment. 1. Managing Porosity and Defects Porosity is one of the most common problems encountered in die casting where gas bubbles or shrinkage cavities occur inside the metal. It can also reduce the structural integrity of the part and impact functionality. This would be addressed by manufacturers using the use of vacuum-assisted die casting, entrapping a minimum amount of air and improved metal density. Moreover, the porosity can be reduced by using pressure-tight casting techniques, design of the mold and proper

Pressstøping av sink

Betydningen av sinkstøping i bilindustrien

trykkstøping av aluminium, trykkstøpefirmaer, trykkstøpefirma, Produsent av støpegods, trykkstøpte deler, zamak 3 pressstøping, Zamak 3 sinkstøping, zamak 5, zamak 5 pressstøping, zamak pressstøping, trykkstøping av sinklegering, Pressstøping av sink
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Hva er pressstøping? Pressstøping er en metallstøpeprosess som kjennetegnes ved at smeltet metall presses inn i formhulrommet. Formhulen lages ved hjelp av to herdede verktøystålformer som bearbeides under prosessen og fungerer på samme måte som sprøytestøpeformer. De fleste støpeformene er laget av ikke-jernholdige metaller, spesielt sink, kobber, aluminium, magnesium, tinn, bly og tinnbaserte legeringer. Avhengig av hvilken type metall som skal støpes, brukes en termisk eller kald motor. Sinkstøpeprosessen er svært populær for å lage deler innen bygg og industri, men den vanligste anvendelsen er i bilindustrien. Biler har faktisk forskjellige deler som kan lages ved hjelp av pressstøping, slik at den moderne prosessen med pressstøping opprinnelig ble startet for bilindustrien. Med støpeprosessen er det ofte ikke behov for ytterligere bearbeiding etter støping: ikke bare er nøyaktigheten opp til 99,8%, men de støpte produktene kan også brukes rå fordi de har en behagelig finish. Bruken av sinkstøping er nesten 28% i bilindustrien, etterfulgt av bygg- og maskinvaresektoren. Sink har blitt et av de viktigste metallene i bilindustrien, spesielt for produkter som dørlåshus, sperre, tannhjul og opptrekksskiver i sikkerhetsbeltesystemer, men også for kamaksler og sensorkomponenter. Ved å bruke dette metallet og dets legeringer er det mulig å oppnå styrke, duktilitet og fleksibilitet som ikke ville vært mulig med andre materialer. I tillegg kan sink være det rette valget for å få estetiske komponenter av høy kvalitet, med trange toleranser som ikke er mulig med andre materialer, og for å få preging og riller til mekaniske komponenter eller tannhjul. Sinkstøpemekanismer i bilindustrien Som nevnt tidligere er bilindustrien det vanligste bruksområdet for trykkstøping: Bruk av sink og sinklegeringer gjør det mulig å produsere komponenter som kan oppnå høy estetisk kvalitet, med trange og smale toleranser for formmorfologi. Sinklegeringer brukes også til belegg på grunn av de mange fordelene, som for eksempel å forbedre sinkens korrosjonshindrende egenskaper, som allerede er imponerende. Nedenfor finner du en rekke mulige eksempler på sinkbelegg: Interiørestetisk seksjon Soltak Seksjon Mekaniske deler Motor og andre komponenter under panseret Servostyringssystem Deler og bremsesystem Klimaanleggskomponenter og -systemer Chassismaskinvare Deler i setebeltesystemet Komponenter i klimakontroll Drivstoffsystem Fordeler for sinkstøping: En effektiv og økonomisk prosess som gir mulighet for ulike former og utførelser. Høyhastighetsproduksjon Dimensjonsnøyaktighet og stabilitet Styrke og vekt Flere etterbehandlingsteknikker er tilgjengelige Enkel montering Pressstøpeprosessen begynte med bruk av bly og blylegeringer, magnesium- og kobberlegeringer som raskt ble etterfulgt, og på 1930-tallet var mange moderne legeringer som fortsatt er i bruk i dag, tilgjengelige. Denne prosessen utviklet seg fra lavtrykksstøping til moderne høytrykksstøping med et trykk på 4 500 pund per kvadrattomme. Den moderne prosessen er i stand til å produsere rene støpeformer med høy integritet og utmerket overflatefinish. Sinkstøpelegeringer er et sterkt, slitesterkt og kostnadseffektivt teknisk materiale. De mekaniske egenskapene er konkurransedyktige og er vanligvis høyere enn støpt aluminium, magnesium, bronse, plast og det meste av støpejern.

Pressstøping av sink

Gunstig produksjon for støpeprosesser i sink

trykkstøping av aluminium, trykkstøping av aluminium, trykkstøpefirmaer, Pressstøping av sink
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Prosessen med trykkstøping med trykkinnsprøytning kan følges frem til midten av 1800-tallet. Komponentene som ble brukt var tinn og bly, men bruken har forsvunnet med innføringen av sink- og aluminiumlegeringer. Denne prosessen har utviklet seg gjennom årene, fra lavtrykksinnsprøytningsformer til støpeformer med et trykk på opptil 4500 psi. Prosessen kan skape produkter av høy kvalitet med utmerkede endeflater. Die Casting er en økonomisk og effektiv prosess for å lage ulike former. Den regnes som overlegen i forhold til andre produksjonsteknikker, den er holdbar og estetisk og kombineres perfekt med andre maskindeler som inngår i den. Dying har mange fordeler. Blant disse er den viktigste evnen til å produsere komplekse former med et høyere toleransenivå enn andre masseproduksjonsmetoder. Tusenvis av identiske utskrifter kan produseres før du trenger å legge til nye formverktøy. Høytrykk er en produksjonsprosess der aluminium som er smeltet, injiseres av en støpemaskin under ekstremt trykk på stål eller støpeformer for å lage design- og detaljdelene til modellen du ønsker å lage. Støping i tonn med universell stramming. Denne posten gjenspeiler mengden trykk gitt på matrisen. Motorstørrelsen varierer fra 400 til 4000 tonn. Det er mange fordeler med å bruke pressstøpeprosessen sammenlignet med andre. Trykkstøping gir deler med tynnere vegger, smalere størrelsesgrenser og raskere prosesser. Arbeidskostnadene og etterbehandlingen er lavest med terningene. Denne prosessen gjør det lettere å oppnå intrikate former med smalere toleranser. I motsetning til forfalskningsprosessen kan du sette inn kjernen i produktet som skapes ved denne prosessen. Former som ikke kan oppnås fra stenger eller rør, kan enkelt oppnås med støping. Antallet operasjonelle prosesser er mindre, noe som fører til reduksjon av avfallsmaterialer. Støping brukes når du trenger en stabil, formstabil og holdbar komponent. De tåler varme og opprettholder et godt toleransenivå, noe som er en viktig forutsetning for alle deler i en god maskin. De er sterkere og lettere enn delene som lages ved hjelp av andre trykkmetoder. Delene er ikke sveiset eller skrudd, noe som øker effektiviteten betraktelig. En annen fordel er de mange løsningene du kan få med lanseringen. Overflater kan være glatte eller strukturerte, noe som letter applikasjonen og bruken. Forhåpentligvis kan denne informasjonen hjelpe deg, og takk for at du leste artikkelen om sinkstøping.

Hva er Zamak sinkstøpedeler

trykkstøpefirma, Produsent av støpegods, trykkstøpte deler, trykkstøpeprodukter, Pressstøping av sink
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Zinc die casting Parts is referred to as the hot-chamber process. It is the method by which zinc (zamak) is heated under high temperatures and the molten material forced into a zinc die casting mold under high pressure to produce product with a similar shape as the die. As the metal moves through the die, air escapes through the vents. Once the die is full, the high pressure is maintained until it solidifies and the die is separated to release the finished zinc cast. After casting, no further modification is usually required. Use of Zinc Die Casting Zinc (zamak) is known for its high strength, accuracy, ductility, ease of casting, high thermal and electrical conductivity, and long life. As such, the zinc die casting is applied in the manufacture of high quality industrial and building materials. Die casting started in the automotive industry and it is still widely used in the manufacture of automotive components. The door locks casing, pulley, and the camshaft are some of the car parts that are made of zinc casting. In the construction industry, zinc die casting is utilized in the manufacture of components such as door knobs, faucets, and roofing. On the other hand, there are many zinc casting machine parts, such as electrical fittings. Zinc Die Casting Process Zinc is cast using the hot-chamber process due to its low melting temperatures. Cold chamber process is applied in the casting of metals with high melting temperatures such as the aluminium. The zinc die casting process involves the preparation of the metal, die preparation, and finishing. It commences with the preparation of the die followed by the metal. Notably, the die can be used once or severally depending on the component being manufactured. If it was used before, it should be lubricated to ease the removal of the cast metal. Afterwards, the ejector die half and the cover die half are screwed. The cover die half has a sprue through which the molten metal is injected while the ejector die has ejector pins for removing the castings. Preparation of the die is followed by melting of the ZA or the ZAMALAK alloy on a furnace. The physical properties of the product dictates the choice of the alloy. Due to metal hardness and strength, the furnace temperature is usually very high. The oxidized parts of the metal are removed at this stage to raise the purity of the finished product. Various chemicals can be added to improve physical properties of the finished alloy. Once the molten metal is prepared, it is injected into the feed system under high pressure. Most of the systems have several dies for efficiency and mass production. The raised pressure ensures that the molten zinc alloy gets into the mold as fast as possible, no air gets into the molten metal, and the expulsion of the air in the die through the vents. After filling the die, the pressure is raised further until the zinc alloy casting solidifies. The process also involves cooling using water. Then, the two dies are separated and the metal cast is removed. This is followed by the cleaning of the feed system to get rid of the flash. Further finishing can be carried out depending with the final use of the product. The runner that is removed from the final product and the flash are usually recycled.

Pressstøping av aluminium

Kina Die Casting Service

trykkstøping av aluminium, trykkstøpefirma, Produsent av støpegods, Pressstøping av sink
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Capacity To Meet Your Aluminum, Magnesium, Zinc and Vacuum Die Casting Needs. Aluminum Die Casting Providing high-quality Aluminum die casting parts at competitive prices requires modem die casting equipment. To reduce the effects that extreme cooling temperatures have on dies CNM TECH is converting its die cooling system from water to oil. Oil maintains a warmer die temperature that contributes to a more uniform casting and extends die life, an important factor in part costs. CNM TECH Die Casting company is adapting robotic controls to the operation of die casting machines. This permits a substantial increase in production rates, important in both controlling costs and meeting delivery requirements. It also allows us to use our people in ways which make better use of their skills and experience. To lower production costs, CNM TECH Die Casting manufacturer has developed and patented, new, low volume, energy efficient aluminum melting furnaces. Since aluminum can be melted efficiently in small quantities, it allows the company to supply casting machines with different alloys of aluminum simultaneously. Casting machines don’t have to stand to wait for a large furnace to supply the proper alloy. Schedules aren’t built around what alloy is in the furnace. Zinc Die Casting For applications where high impact strength, low cost and close dimensional limits are important design considerations, zinc die casting plays an important role. Zinc normally permits higher production rates than aluminum and parts can be designed with thinner cross-sections. The resulting parts are highly resistant to corrosion and receptive to a variety of beautiful finishes. High rates of production and uniform quality are maintained by die casting machines with automatic extractors. Vacuum Die Casting Vacuum die casting is preferred by many casting buyers because it results in a less porous part. CNM TECH’s Vert-a-Cast machines, with a clamping force of 400 tons, are capable of producing castings automatically at a much faster pace than manually-operated horizontal machines. Vacuum die casting, a CNM TECH capability for ten years, is often the only economical way to meet critical porosity specifications. Maintenance, repair, changes and corrections on dies are accomplished promptly in CNM TECH’s fully-equipped tool and die shop. Alloy materials are melted, fluxed and cleaned in the central furnace before being transferred to die casting equipment. If you have any die casting requirement, you are welcome to send us your requirement for a quotation.

Om Metal Casting Services

trykkstøping av aluminium, trykkstøpefirmaer, trykkstøpte deler, høytrykksstøping, Støping av magnesium, Pressstøping av magnesium, Pressstøping av sink
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Metal casting services involve the shaping of free-flowing liquid metals through the use of dies, molds, or patterns.  Castings are generally roughly finished due to the nature of their production.  In many cases, additional finishing is required to remove burrs and other artefacts of the casting process.  Metal castings services are used to design a wide range of components and finished products.  Everything from simple nails and fasteners to engine blocks can be fabricated using metal casting services.  Common metal casting processes include sand casting, die casting, permanent mold casting, investment casting, centrifugal casting, and lost foam casting. Sand Casting Sand casting is used to make large parts (typically iron, but also bronze, brass, aluminum). Molten metal is poured into a mold cavity formed out of sand (natural or synthetic). Sand castings generally have a rough surface, sometimes with surface impurities and surface variations. Die-casting includes a number of processes in which reusable dies or molds are used to produce casting.  The die contains an impression of the finished product together with it’s running, feeding and venting systems.  The die is capable of a regular cycle and of (quickly) dissipating the heat of the metal poured into it.  Once the liquid metal has cooled sufficiently, the mold is opened and the casting can be removed and finished. Permanent Mold Casting In permanent mold casting, molten metal is poured into cast iron molds, coated with a ceramic mold wash. Cores can be a metal, sand, sand shell, or other materials. When completed, the molds are opened and the castings are ejected.   Investment casting services involve molding patterns by the injection of a special wax into a metal die.  The patterns are assembled into a cluster around a wax runner system. The ‘tree’ of patterns is then coated with 8-10 layers of refractory material. The assembly is heated to remove the wax.  The hot mold is cast, and when cool, the mold material is removed by impact, vibration, grit blasting, high-pressure water blasting or chemical dissolution leaving the castings, which are then removed from the runner system. Centrifugal casting Centrifugal casting services are used to produce castings that are cylindrical in shape.  In centrifugal casting, a permanent mold is rotated about its axis at high speeds as the molten metal is poured. The molten metal is centrifugally thrown towards the inside mold wall, where it solidifies. The casting is usually a fine grain casting with a very fine-grained outer diameter, which is resistant to atmospheric corrosion, a typical need with pipes. The inside diameter has more impurities and inclusions, which can be machined away. Lost foam casting Lost foam casting (LFC) is metal casting services that use foam filled patterns to produce castings.  Foam is injected into a pattern, filling all areas, leaving no cavities.  When molten metal is injected into the pattern, the foam is burned off allowing the casting to take shape. Die casting Die casting and metal casting includes a number of processes in which reusable dies or molds are used to produce casting. The die is capable of a regular cycle and of (quickly) dissipating the heat of the metal poured into it. Once the liquid metal has cooled sufficiently, the mold or is opened and the casting can be removed and finished.   In the die casting process, molten metal is injected under pressure into a reusable mold or die. The die contains an impression of the casting together with it’s running, feeding and venting systems. The die is capable of a regular cycle and of (quickly) dissipating the heat of the metal poured into them. Once the liquid metal has cooled sufficiently, the mold or is opened and the metal casting can be removed and finished. high pressure die casting The high pressure die casting process is the most widely used, representing about 50% of all light alloy casting production. Low pressure die casting currently accounts for about 20% of production and its use is increasing. Gravity die casting accounts for the rest, with the exception of a small but growing contribution from the recently introduced vacuum die casting and squeeze casting process. the design of low pressure and gravity die casting dies for improved die filling, optimized solidification pattern and maximum yield. Gravity die-casting is suitable for mass production and for fully mechanized casting. Low-pressure die casting is especially suited to the production of components that are symmetric about an axis of rotation. Light automotive wheels are normally manufactured by this technique. Die casting metals can vary widely, and different die casting companies may have the ability to work with anyone or number of them. Some of the most common metal casting types include aluminum die casting, brass die casting, lead die casting (the most popular for model die casting), magnesium die casting, and zinc die casting. Hope all of that information is enough for your reference, but if you want to know more information, you are welcome to contact us by phone or email.

høytrykksstøpedel

Hva er pressstøping?

pressstøping
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Hva er pressstøping Pressstøping er en produksjonsprosess for å fremstille metalldeler med nøyaktige dimensjoner, skarpt definerte, glatte eller strukturerte overflater. Den utføres ved å presse smeltet metall under høyt trykk inn i gjenbrukbare metallformer. Prosessen beskrives ofte som den korteste avstanden mellom råmateriale og ferdig produkt. Begrepet “pressstøping” brukes også for å beskrive den ferdige delen. Begrepet “gravitasjonsstøping” refererer til støpegods laget i metallformer under et gravitasjonshode. Det er kjent som permanent mold casting i USA og Canada. Det vi kaller “die casting” her, er kjent som “high pressure die casting” i Europa. Hvordan produseres støpegods? For det første må en stålform som kan produsere titusenvis av støpegods i rask rekkefølge, lages i minst to seksjoner for å gjøre det mulig å ta ut støpegodset. Disse seksjonene monteres fast i en maskin og er ordnet slik at den ene er stasjonær (fast formhalvdel), mens den andre er bevegelig (injektorformhalvdel). For å starte støpesyklusen klemmes de to formhalvdelene tett sammen av støpemaskinen. Smeltet metall sprøytes inn i formhulen, der det størkner raskt. Formhalvdelene trekkes fra hverandre, og støpegodset støpes ut. Støpeformene kan være enkle eller komplekse, med bevegelige glidere, kjerner eller andre seksjoner, avhengig av hvor kompleks støpeoppgaven er. Den komplette syklusen i pressstøpeprosessen er den raskeste kjente for produksjon av presise deler i ikke-jernholdig metall. Dette står i sterk kontrast til sandstøping, som krever en ny sandform for hver støping. Selv om den permanente støpeprosessen bruker støpeformer av jern eller stål i stedet for sand, er den betydelig langsommere og ikke like presis som pressstøping. Typer støpemaskiner Uavhengig av hvilken type maskin som brukes, er det avgjørende at formhalvdelene, kjernene og/eller andre bevegelige deler er sikkert låst på plass under støpesyklusen. Generelt styres maskinens klemkraft av (a) støpestykkets projiserte overflateareal (målt ved formens skillelinje) og (b) trykket som brukes til å sprøyte metall inn i formen. De fleste maskiner bruker vippemekanismer som aktiveres av hydrauliske sylindere (noen ganger lufttrykk) for å oppnå låsing. Andre bruker direktevirkende hydraulisk trykk. Sikkerhetssperresystemer brukes for å hindre at formen åpnes under støpesyklusene. Støpemaskiner, store eller små, skiller seg fra hverandre kun ved metoden som brukes for å injisere smeltet metall i støpeformen. Disse klassifiseres og beskrives som enten varm- eller kaldkammerstøpemaskiner. Varmkammerstøpemaskiner Varmkammermaskiner (fig. 1) brukes først og fremst til sink og legeringer med lavt smeltepunkt som ikke så lett angriper og eroderer metallgryter, sylindere og stempler. Avansert teknologi og utvikling av nye materialer med høyere temperatur har utvidet bruken av dette utstyret til støping av magnesiumlegeringer. Figur 1: Varmkammermaskin. Diagrammet illustrerer stempelmekanismen som er nedsenket i smeltet metall. Moderne maskiner er hydraulisk betjent og utstyrt med automatisk sykluskontroll og sikkerhetsanordninger. I varmkammermaskinen er injeksjonsmekanismen nedsenket i smeltet metall i en ovn som er festet til maskinen. Når stempelet heves, åpnes en port slik at sylinderen fylles med smeltet metall. Når stempelet beveger seg nedover og tetter porten, presses det smeltede metallet gjennom svanehalsen og dysen inn i matrisen. Etter at metallet har størknet, trekkes stempelet tilbake, matrisen åpnes, og det ferdige støpegodset skytes ut. Varmkammermaskiner er raske i drift. Syklustiden varierer fra mindre enn ett sekund for små komponenter som veier mindre enn ett gram, til tretti sekunder for en støpegods på flere kilo. Formene fylles raskt (normalt mellom fem og førti millisekunder), og metallet sprøytes inn med høyt trykk (fra 1500 til over 4500 psi). Likevel gir moderne teknologi god kontroll over disse verdiene, noe som gir støpegods med fine detaljer, små toleranser og høy styrke. Kaldkammerstøpemaskiner Kaldkammermaskiner (fig. 2) skiller seg fra varmkammermaskiner først og fremst på ett punkt: Injeksjonsstempelet og sylinderen er ikke nedsenket i smeltet metall. Det smeltede metallet helles inn i et “kaldt kammer” gjennom en port eller en hellespalte ved hjelp av en manuell eller automatisk øse. Et hydraulisk betjent stempel, som beveger seg fremover, forsegler åpningen og tvinger metallet inn i den låste matrisen ved høyt trykk. Injeksjonstrykket varierer fra 3000 til over 10 000 psi for både aluminium- og magnesiumlegeringer, og fra 6000 til over 15 000 psi for kobberlegeringer. Figur 2: Kaldkammermaskin. Diagrammet illustrerer støpeformen, kaldkammeret og den horisontale stempelet (i ladeposisjon). Trykkstøping gir komplekse former med mindre toleranser enn mange andre masseproduksjonsprosesser. I en kaldkammermaskin helles det mer smeltet metall inn i kammeret enn det som trengs for å fylle formhulen. Dette bidrar til å opprettholde et tilstrekkelig trykk til å fylle hulrommet godt med støpelegering. Overflødig metall støpes ut sammen med støpegodset og er en del av det ferdige støpet. Driften av en kaldkammermaskin er litt langsommere enn en varmkammermaskin på grunn av øseoperasjonen. En kaldkammermaskin brukes til støpelegeringer med høyt smeltepunkt fordi stempelet og sylinderen er mindre utsatt for angrep siden de ikke er nedsenket i smeltet metall. Støping og konstruksjon av støpeformer Støpeformene (fig. 3) er laget av legert verktøystål i minst to seksjoner, kalt fast formhalvdel og ejektorformhalvdel. Den faste formhalvdelen er montert på siden mot innsprøytningssystemet for smeltet metall. Utstøterformhalvdelen, som støpegodset fester seg til og støpes ut fra når formen åpnes, er montert på maskinens bevegelige plate. Den faste formhalvdelen er konstruert for å inneholde granathullet som det smeltede metallet kommer inn i formen gjennom. Utstøterhalvdelen inneholder vanligvis løperne (passasjene) og portene (innløpene) som leder det smeltede metallet til hulrommet (eller hulrommene) i matrisen. Ejektoren

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