亜鉛ダイカスト｜高圧ダイカスト製造

ダイカストとは？ダイカストについて知っておくべきこと

管理者 / 2025年2月21日

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

正しい合金ダイカスト会社の選択：完全ガイド

アルミダイキャスト, ダイカスト会社

管理者 / 2025年2月18日

合金ダイカストは、高精度で耐久性があり、費用対効果の高い金属部品に大きく依存しているため、製造業にとって不可欠です。現代の製造業に革命的な影響を与えたこのプロセスは、複雑な金属部品を非常に高い精度と一貫性で大量生産することを可能にしました。自動車、航空宇宙、エレクトロニクス、医療、重機などのサービス産業において、合金ダイカスト鋳造会社として専門化された企業によって、それぞれのニーズに合わせた金属部品が製造されています。プロの合金ダイカスト鋳造会社は、業界標準に合った製品を提供するために、厳格な品質管理プロセスと相まって、最新の技術と高品質の材料を使用しています。適切な会社を選ぶことが重要であれば、何年も使える本当に信頼できる製品と、早期に故障してしまう欠陥部品のどちらかを一方的に選ぶことになるかもしれません。この記事では、合金ダイカスト鋳造の詳細な概要を説明し、その重要性、利点、最高の合金ダイカスト鋳造会社を選ぶ際に考慮すべき最も重要な要素を強調します。精密に設計された部品の製造を求める製造業者や、経済的な製造オプションを求める企業にとって、合金ダイカストの知識は不可欠です。合金ダイカストとは？溶融金属を金型（ダイ）に高圧で注入する金属製造プロセスを合金ダイカストと呼びます。この方法は、公差の厳しい複雑な形状の製造に広く使用されています。アルミニウム、亜鉛、マグネシウムなどの様々な金属合金がダイカストでよく使用されるのは、強度特性と耐食性に優れているからです。ダイカストで使用される合金の種類ダイカストで使用される合金は、ダイカスト鋳造の過程で選択されたものに大きな影響を及ぼし、最終製品の強度や重量、耐食性、全体的な性能に直接つながります。合金は、その機械的特性、耐久性、必要な最終用途によって、産業によって異なります。ダイカストで最も一般的に使用される合金を以下に示します。1.アルミ合金優れた熱伝導性と耐食性、軽量強度を併せ持つアルミダイカストは、世界中の研究者やメーカーに好まれています。耐久性があり、比較的軽い部品を必要とする産業では、この合金タイプが使用されます。主な特徴用途2.亜鉛合金高強度、低融点、優れた精度を持っているため、亜鉛もダイカストでよく使用される合金です。小さくて細かい部品の製造に最適です。主な特徴用途3.マグネシウム合金軽量であるため、強度を犠牲にすることなく軽量化を図りたい産業に非常に適しており、そのためこの金属はマグネシウムと名付けられた。主な特徴用途4.銅ベース合金真鍮と青銅は、高い電気伝導性、耐食性、優れた耐摩耗性を持つ銅ベース合金の一例である。このような合金は、電気的および熱的性能が優れていなければならない用途に使用されます。主な特徴用途信頼できる合金ダイカスト会社と協力する利点適切な合金ダイカスト会社は、業界標準に従った高品質の製品を選択することができます。主な利点は以下の通りです：1.高精度と一貫性一流のダイカスト会社は、優れた機械設備と厳格な品質管理措置を備えており、欠陥の極めて少ない寸法を製造します。2.費用対効果ダイカストは非常に効率的なプロセスであり、他の金属成形プロセスと比較して、最終製品の材料費とエネルギー費も大幅に削減できます。3.カスタマイズと多様性カスタムソリューションベースの鋳造会社は、特定の業界の必要性に基づいたカスタムソリューションを提供し、さまざまな合金オプションを提供する評判の高い会社です。4.より速い生産と短いリードタイム現代のダイカスト企業では、生産速度を高め、厳しい納期に対応するために、自動化システムが使用されています。5.耐久性と強度合金ダイカスト部品は非常に耐久性が高いことがよく知られており、厳しい条件下での使用に適しています。最適な合金ダイカスト会社の選び方ダイカストメーカーを選ぶ際には、以下の点を考慮する必要があります：1.1.経験と業界の専門知識会社の実績、合金ダイカスト鋳造を何年も経験したことがあるかどうか、あなたの業界での試みが証明されているかどうかを確認します。2.2.品質証明書と規格ビジネスが業界のコーデックに従っているかどうかを確認してください：3.3.高度な技術と設備精度を維持し、肉体労働の必要性を減らすため、現代のダイカスト企業は、CNCマシン、真空鋳造、ロボットによる自動化などの設備を採用しています。4.材料の選択とカスタマイズ複数の合金オプションとカスタマイズが可能な会社を持つことで、貴社が提供する特定のデザインを見つけることができます。5.強力なサプライチェーンと納期厳守効率的な物流と迅速な納品は、信頼できるサプライヤーによってもたらされる。6.試作と試験能力製品の試作と厳格な品質試験（X線検査と引張強度）が非常に重要です。7.競争力のある価格設定価格だけが唯一の考慮事項であってはなりませんが、優れたダイカスト企業は、品質を犠牲にすることなく競争力のある価格を提供することができます。合金ダイカストを利用する産業 1.自動車産業 2.航空宇宙産業 3.電子産業 4.医療機器 5.消費者向け製品合金ダイカストにおける課題と企業の克服方法合金ダイカストはよく知られた製造工程であるが、いくつかの課題に直面し、品質、コスト、持続可能性に影響を及ぼしている。これらの課題を克服するために、大手合金ダイカスト企業は革新的なソリューションを導入しており、その結果、高品質の生産、コストの最適化、環境への影響の最小化を実現しています。1.気孔率と欠陥の管理気孔率は、ダイカスト鋳造で遭遇する最も一般的な問題の一つで、金属内部にガス気泡や収縮空洞が発生します。また、部品の構造的完全性を低下させ、機能性に影響を与えることもあります。メーカーが真空アシストダイカストを使用することで、最小限の空気を封じ込め、金属密度を向上させることができます。さらに、気孔率は、圧密鋳造技術、金型の設計、および適切な鋳造方法を使用することによって減少させることができる。

自動車産業における亜鉛ダイカストの重要性

アルミダイカスト, ダイカスト会社, ダイカスト会社, ダイカストメーカー, ダイカスト部品, ザマック 3 ダイカスト, ザマック3亜鉛鋳造, ザマック5, ザマック5ダイカスト, ザマックダイカスト, 亜鉛合金ダイカスト, 亜鉛ダイカスト

管理者 / 2019年9月28日

ダイカストとは？ダイカストとは、金型キャビティに溶融金属を圧入することを特徴とする金属鋳造プロセスです。金型キャビティは、加工中に加工され、射出成形金型と同様の働きをする2つの硬化した工具鋼の金型を使って作られます。ほとんどのダイカストは非鉄金属、特に亜鉛、銅、アルミニウム、マグネシウム、錫、鉛、錫系合金から作られます。投げられる金属の種類によって、熱機関または冷機関が使用されます。亜鉛ダイカスト鋳造法は、建築や工業分野の部品を作るのに非常に人気がありますが、最も一般的な用途は自動車産業です。実際、自動車にはダイカストで作ることができるさまざまな部品があり、ダイカストの近代的なプロセスはもともと自動車産業のために始まったものです。鋳造プロセスでは、多くの場合、鋳造後のさらなる機械加工は必要ありません。精度が99.8%に達するだけでなく、鋳造された製品は心地よい仕上がりになるため、生のまま使用することもできます。亜鉛ダイカストの使用は、自動車産業でほぼ28%、次いで建築・金物産業となっています。亜鉛は自動車部品産業で最も重要な金属の一つとなっており、特にドアロックハウジング、爪、ギア、シートベルトシステムのリトラクタープーリーなどの製品に使用されていますが、カムシャフトやセンサー部品にも使用されています。この金属とその合金を使用することで、他の材料では不可能な強度、延性、柔軟性を実現することが可能です。さらに、亜鉛は他の材料では不可能な厳しい公差を持つ高品質の美的部品を得たり、機械部品や歯車のエンボスや溝を得るための正しい選択となり得ます。自動車産業における亜鉛ダイカストのメカニズム前述のように、自動車産業は最も一般的なダイカスト用途です。亜鉛とその合金を使用することで、形状の公差が狭く、高い美観品質を達成できる部品を製造することが可能になります。亜鉛合金はまた、すでに素晴らしい亜鉛の耐食性を向上させるなど、その多くの利点からコーティングにも使用されています。以下に、亜鉛メッキの可能な例をいくつかご紹介します：内装美観部サンルーフ部機械部品エンジンおよびその他のアンダーフード部品パワーステアリングシステム部品およびブレーキシステムエアコン部品およびシステムシャーシのハードウェアシートベルトシステムの部品気候制御の部品燃料システム亜鉛ダイカストの利点：効率的で経済的なプロセスにより、様々な形状が可能です。高速生産寸法精度と安定性強度と重量いくつかの仕上げ技法が利用可能簡単な組み立てダイカストプロセスは、鉛と鉛合金の使用から始まり、マグネシウムと銅合金がすぐに追随し、1930年代には、今日でも使用されている多くの現代的な合金が利用できるようになりました。このプロセスは、低圧射出鋳造から1平方インチあたり4,500ポンドの近代的な高圧射出鋳造へと進化した。現代の製法は、優れた表面仕上げを持つ、完全性の高い、きれいな鋳型を作ることができます。亜鉛鋳造合金は丈夫で耐久性があり、費用対効果の高いエンジニアリング材料です。その機械的特性は競争力があり、通常アルミ鋳物、マグネシウム鋳物、青銅鋳物、プラスチック鋳物、そしてほとんどの鋳鉄鋳物よりも優れています。.

亜鉛ダイカストプロセスにおける有利な製造方法

アルミダイキャスト, アルミダイカスト, ダイカスト会社, 亜鉛ダイカスト

管理者 / 2019年9月14日

加圧射出によるダイカストのプロセスは、1800年半ばまでたどることができる。使用された部品は錫と鉛だったが、亜鉛とアルミニウム合金の登場とともにその用途はなくなった。このプロセスは、低圧射出金型から最大4,500psiの圧力で鋳造する金型へと、長い年月をかけて進化してきました。このプロセスは、優れた端面を持つ高品質の製品を作り出すことができます。ダイカストは、様々な形状を作るための経済的で効率的なプロセスです。他の製造技術よりも優れていると考えられており、耐久性と美観に優れ、その一部である機械の他の部品と完璧に組み合わされます。ダイイングには多くの利点がある。なかでも主なものは、他の大量生産方法よりも高い公差レベルで複雑な形状を製造できることである。新しい金型ツールを追加する前に、何千もの同じプリントを生産することができます。ハイダイ加圧とは、作りたいモデルのデザインや細部のパーツを作るために、溶かしたアルミニウムを鋳造機で鉄や金型に極圧をかけて注入する製造方法です。トンの万能締めで鋳造する。この記録は、母型に与えられた圧力の大きさを反映している。エンジンの大きさは400トンから4000トンまで様々です。ダイキャストプロセスを使用することには、他と比べて多くの利点があります。ダイカスト鋳造では、肉厚が薄く、サイズ制限が狭い部品を製造でき、工程を短縮できます。人件費と仕上げはサイコロで最も低くなります。このプロセスは、より狭い公差で複雑な形状を得ることを容易にします。贋物プロセスとは異なり、このプロセスで作られた製品にカーネルを挿入することができます。棒や管では得られない形状が、鋳造では容易に得られる。作業工程が少ないため、廃棄物の削減につながります。ダイカストは、寸法が安定し、耐久性のある部品が必要な場合に使用されます。熱に耐え、優れた機械の各部品にとって重要な条件である公差を維持します。他の印刷法で作られた部品よりも丈夫で軽い。その部品は溶接やねじ止めされていないため、効率が大幅に向上する。もうひとつの利点は、立ち上げで得られる多くの回避策だ。表面は平滑にもテクスチャーにもできるため、アプリケーションとその使用が容易になる。うまくいけば、この情報はあなたを助けることができ、亜鉛ダイカストについての記事を読んでいただきありがとうございます。.

ザマック亜鉛ダイカスト部品とは

ダイカスト会社, ダイカストメーカー, ダイカスト部品, ダイカスト製品, 亜鉛ダイカスト

管理者 / 2019年6月18日

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.

中国ダイカストサービス

アルミダイキャスト, ダイカスト会社, ダイカストメーカー, 亜鉛ダイカスト

管理者 / 2019年5月5日

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.

金属鋳造サービスについて

アルミダイキャスト, ダイカスト会社, ダイカスト部品, 高圧ダイカスト, マグネシウム鋳造, マグネシウムダイカスト, 亜鉛ダイカスト

管理者 / 2019年4月14日

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.

ダイカストとは

ダイカスト

管理者 / 2018年10月13日

What is die casting Die casting is a manufacturing process for producing accurately dimension, sharply defined, smooth or textured-surface metal parts. It is accomplished by forcing molten metal under high pressure into reusable metal dies. The process is often described as the shortest distance between raw material and finished product. The term, “die casting,” is also used to describe the finished part. The term “gravity die casting” refers to castings made in metal molds under a gravity head. It is known as permanent mold casting in the U.S.A. and Canada. What we call “die casting” here is known as “high pressure die casting” in Europe. How are die castings produced First, a steel mold capable of producing tens of thousands of castings in rapid succession must be made in at least two sections to permit removal of castings. These sections are mounted securely in a machine and are arranged so that one is stationary (fixed die half) while the other is moveable (injector die half). To begin the casting cycle, the two die halves are clamped tightly together by the die casting machine. Molten metal is injected into the die cavity where it solidifies quickly. The die halves are drawn apart and the casting is ejected. Die casting dies can be simple or complex, having moveable slides, cores, or other sections depending on the complexity of the casting. The complete cycle of the die casting process is by far the fastest known for producing precise non-ferrous metal parts. This is in marked contrast to sand casting which requires a new sand mold for each casting. While the permanent mold process uses iron or steel molds instead of sand, it is considerably slower, and not as precise as die casting. Types of machines for die casting Regardless of the type of machine used, it is essential that die halves, cores and/or other moveable sections be securely locked in place during the casting cycle. Generally, the clamping force of the machine is governed by (a) the projected surface area of the casting (measured at the die parting line) and (b) the pressure used to inject metal into the die. Most machines use toggle type mechanisms actuated by hydraulic cylinders (sometimes air pressure) to achieve locking. Others use direct acting hydraulic pressure. Safety interlock systems are used to prevent the die from opening during the casting cycles. Die casting machines, large or small, very fundamentally only in the method used to inject molten metal into the die. These are classified and described as either hot or cold chamber die casting machines. Hot Chamber die casting machines Hot chamber machines (Fig.1) are used primarily for zinc, and low melting point alloys which do not readily attack and erode metal pots, cylinders and plungers. Advanced technology and development of new, higher temperature materials have extended the use of this equipment for magnesium alloy die casting. Figure 1: Hot Chamber Machine. Diagram illustrates the plunger mechanism which is submerged in molten metal. Modern machines are hydraulically operated and equipped with automatic cycling controls and safety devices. In the hot chamber machine, the injection mechanism is immersed in molten metal in a furnace attached to the machine. As the plunger is raised, a port opens allowing molten metal to fill the cylinder. As the plunger moves downward sealing the port, it forces molten metal through the gooseneck and nozzle into the die. After the metal has solidified, the plunger is withdrawn, the die opens, and the resulting casting is ejected. Hot chamber machines are rapid in operation. Cycle times vary from less than one second for small components weighing less than one ounce to thirty seconds for a casting of several pounds. Dies are filled quickly (normally between five and forty milliseconds) and metal is injected at high pressures (1,500 to over 4,500 psi). Nevertheless, modern technology gives close control over these values, thus producing castings with fine detail, close tolerances and high strength. Cold Chamber die casting machines Cold chamber machines (Fig. 2) differ from hot chamber machines primarily in one respect; the injection plunger and cylinder are not submerged in molten metal. The molten metal is poured into a “cold chamber” through a port or pouring slot by a hand or automatic ladle. A hydraulically operated plunger, advancing forward, seals the port forcing the metal into the locked die at high pressures. Injection pressures range from 3,000 to over 10,000 psi for both aluminum and magnesium alloys, and from 6,000 to over 15,000 psi for copper base alloys. Figure 2: Cold Chamber Machine. Diagram illustrates die, cold chamber and horizontal ram or plunger (in charging position). Die casting provides complex shapes within closer tolerances than many other mass production processes. In a cold chamber machine, more molten metal is poured into the chamber that is needed to fill the die cavity. This helps sustain sufficient pressure to pack the cavity solidly with casting alloy. Excess metal is ejected along with the casting and is part of the complete shot. Operation of a “cold chamber” machine is a little slower than a “hot chamber” machine because of the ladling operation. A cold chamber machine is used for high melting point die casting alloys because plunger and cylinder assemblies are less subject to attack since they are not submerged in molten metal. Die casting and their construction Die casting dies (Fig. 3) are made of alloy tool steels in at least two sections called fixed die half and ejector die half. The fixed die half is mounted on the side toward the molten metal injection system. The ejector die half, to which the die casting adheres, and from which it is ejected when the die is opened, is mounted on the moveable platen of the machine. The fixed die half of the die is designed to contain the sprue hole through which molten metal enters the die. The ejector half usually contains the runners (passageways) and gates (inlets) which route molten metal to the cavity (or cavities) of the die. The ejector

亜鉛ダイカスト