Buyer's Guide: Pressure Die-casting

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Pressure die-casting is a key manufacturing process used to create parts out of metal alloys or nonferrous metals such as aluminum, copper, nickel, tin, titanium, zinc and copper alloys. In this process, molten metal is pressurized into a die or mold to form a desired shape, from intricate parts for complex machines to simple components for everyday objects. The process offers advantages of high-speed production, low costs and repeatability. In this article, we’ll take a look at what pressure die-casting is, its advantages, types, applications and more.

What is pressure die-casting?

At its core, pressure die-casting is a metalworking process that involves injecting molten metal into a die or mold under pressure. It is often used to create complex shapes and intricate designs that would be difficult or impossible to make using other metalworking methods. Molten metal is placed in a furnace and heated to the molten temperature of the alloy being used. It is then injected into a die or mold using a hydraulic cylinder or a mechanical plunger. The die or mold is then cooled to solidify the metal and the desired shape is formed.

High speed and repeatability make this process well-suited for mass production because it yields complex parts in high volumes with great accuracy and consistency. Additionally, pressure die-casting offers high strength, tight tolerances and low costs.

Advantages of pressure die-casting

Pressure die-casting offers a number of advantages that make it an attractive option for many parts manufacturers. Here are some of the most notable benefits of this process:

• High speed: Pressure die-casting is a fast process, allowing parts to be made quickly and efficiently. This is especially useful for those who need to produce parts in large volumes in a short period of time.
• Low cost: This is a cost-effective process that can produce parts at a low cost. This is especially true for large-scale productions, as the cost per part decreases with increased quantities.
• Repeatability: Pressure die-casting offers excellent repeatability, which is important for producing parts with consistent quality and performance. The process also minimizes the need for post-processing, as parts can be produced with tight tolerances and little to no finishing required.
• High strength: This method produces parts with high strength and durability as well as a smooth surface finish, which helps reduce stress concentrations and increases fatigue resistance.

Types of pressure die-casting

Pressure die-casting can be divided into two main types: high-pressure and low-pressure die-casting.

High-pressure die-casting is a process in which molten metal is injected into a die or mold at high pressures of up to 110MPa. This is usually used for producing small, intricate parts with complex shapes and for high-volume production, as it offers high speed and low costs.

In low-pressure die-casting, on the other hand, molten metal is injected into a die or mold at low pressures of up to 10MPa. This is used for making larger parts with simpler shapes and often for low-volume production, as it offers greater flexibility and control.

Applications of pressure die-casting

Pressure die-casting is used in many industries, including automotive, electronics, aerospace and medical, to produce small, intricate parts for complex machines.

These components include engine blocks, pistons and other engine components for the automotive industry, and connectors, switches and other electrical products for the electronic components sector.

For the aerospace industry, pressure die-casting turns out fuel tanks, structural components and other aircraft parts. It is used to produce implants, prosthetics and other medical devices.

Pressure die-casting is also suitable for making components of everyday objects such as door handles, hinges and locks.

Market trends

The market for die-casting is forecast to post 5.92 percent CAGR from 2023 to 2028, reaching $86.3 billion, according to Mordor Intelligence. The industry analysis and consulting firm attributes this growth to demand for aluminum die-cast parts, especially in the automotive sector, where weight reduction in parts is highly desirable but safety, quality and performance cannot be sacrificed.

Frequently asked questions about pressure die-casting

What is the difference between gravity and pressure die-casting?

Gravity die-casting and pressure die-casting are two different processes used to create metal parts. The main difference is the type of force used to inject the molten metal into the die or mold. Gravity die-casting uses the force of gravity, while pressure die-casting employs a hydraulic cylinder or a mechanical plunger.

The former is a slower process, usually adopted in low-volume production. It is also more limited in terms of the size and complexity of the parts produced. Pressure die-casting is much faster and is suitable for high-volume projects. It is also more versatile and can be used to produce larger and more complex parts.

What are the most important factors buyers consider when buying wholesale pressure die-cast parts?

When sourcing pressure die-cast parts, here are a few important factors to consider.

• Quality: Buyers should opt for parts made from high-quality materials and manufactured to exacting standards.
• Cost: Buyers should look for parts that offer the best value for money.
• Lead Time: Buyers should find parts with short lead times to ensure timely delivery.
• Certification: Buyers should source parts that meet industry standards and regulations.

How to find trustworthy pressure die-cast parts manufacturers?

Finding a reliable and reputable pressure die-cast parts manufacturer can be a challenge. Here are a few tips.

• Research: It is important to do your research before selecting a pressure die-cast parts manufacturer. Look for those with a good reputation in the industry and read customer reviews to get an idea of their quality and service.
• Experience: Look for manufacturers with extensive experience in the industry and a proven track record of success.
• Quality: Ensure prospective suppliers use high-quality materials and adhere to strict quality control standards.
• Cost: Look for companies that offer competitive prices and value for money.
• Delivery: Consider manufacturers with short lead times and reliable delivery services.

Finding a trustworthy pressure die-cast parts manufacturer can be a challenge, but with the right research and due diligence, it is possible to find a reliable and reputable one that meets needs and expectations.

Here are verified manufacturers and samples of their pressure die-cast parts on GlobalSources.com.

Aluminum alloy, high-pressure die-casting

Company: Dongguan Xinruida Precision Technology Co. Ltd

Description: The Die Casting-9 is an A360 or ADC12 aluminum alloy part made using high-pressure die-casting. Dongguan Xinruida can handle mold design based on technical drawings or samples, with the mold ready in 20 to 30 days. It provides OEM and ODM services. Emerson, ABB Group, HP, Apple, Philips and Bosch are its major customers.

Price: $0.10 to $0.50

MOQ: 1 piece

Lead time:  20 to 25 days

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Aluminum, high-pressure die-casting

Company: Hexie Metal Die Casting Co. Ltd

Description: The HX107 is an aluminum part made using high-pressure die-casting. It is powder-coated in black. Other surface treatments and colors are accepted. ISO 9001:2015-compliant Hexie has its own R&D department and welcomes OEM orders.

Price: $10

MOQ: 500 pieces

Lead time: 8 to 10 days

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Aluminum, high-pressure die-casting

Company: ST Metal Manufacturer Ltd

Description: The ST-1810 is a custom-made part produced using aluminum and high-pressure die-casting. Tolerance is ±0.01mm. ST Metal has more than 15 years of experience in metal manufacturing and is ISO 9001:2008-compliant. It provides OEM and ODM services and exports products to the US, Europe, Asia and other regions.

Price: $1.21 to $4.23

MOQ: 100 pieces

Lead time: 7 to 25 days

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Custom metal part, low-pressure die-casting

Company: Dalian Hongsheng Machine Co. Ltd

Description: Model HSH-3-8228 is a customized metal part produced using low-pressure die-casting. Dalian Hongsheng has been manufacturing metal parts since 2003. Its factory is equipped with 40 advanced processing and testing equipment. This company is compliant with ISO 9001:2015 and 9001:2008.

Price: $2 to $10

MOQ: 3 pieces

Lead time: 15 to 25 days

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Aluminum alloy, high-pressure die-casting

Company: Dongguan Senbao Plastic Products Co. Ltd

Description: The KB0220 is a die-cast part made using the high-pressure process. Material options include ADC1, ADC3, ADC10, ADC12, A413, A360, A380 and A383 aluminum alloy. Dongguan Senbao specializes in metal parts and is ISO 9001:2015-compliant. It accepts OEM projects.

Price: $3

MOQ: 1,000 pieces

Lead time: 15 to 20 days

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Aluminum alloy, high-pressure die-casting+machining

Company: Mestech Industrial Ltd

Description: The Mestech-350 (1) is a machinery part made of aluminum alloy part and processed using high-pressure die-casting and machining. Tolerance is ±0.1 to 0.05mm or as specified. Surface treatment options are powder coating, painting, sandblasting and anodizing. ISO 9001-compliant Mestech specializes in molds, and plastic and metal parts, and provides OEM services. Samsung is one of its major customers.

Price: $2

MOQ: 2,000 pieces

Lead time: 10 to 20 days

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Aluminum alloy, high-pressure die-casting

Company: Ningbo BMway Machinery Co. Ltd

Description: Model A Die Casting-070 is an aluminum alloy part made using high-pressure die-casting. Ningbo BMway uses Pro/E, UG, Solidworks, Auto CAD and PDF software and follows ASTM, DIN, JIS, EN and GB standards. Ningbo BMway has a 2,000sqm factory, and conducts QC and R&D in-house.

Price: $5 to $5.40

MOQ: 200 pieces

Lead time: 10 to 25 days

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Aluminum alloy, high-pressure die-casting

Company: Qingdao Juize Machinery Co. Ltd

Description: The Juize-G-042 is an automotive or industrial machinery part made of A356 or ADC12 aluminum alloy and processed using high-pressure die-casting and T6 heat treatment processes. Casting tolerance is CT4 to CT9. This part may be powder-coated, painted or anodized. Qingdao Juize is ISO 9001-compliant. It has more than 30 years of experience in casting, forging, stamping and CNC machining.

Price: $35.50 to $36.9 per kilogram

MOQ: 100kg

Lead time: 30 to 45 days

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Aluminum, high-pressure die-casting

Company: Shenzhen Mingyuan Hardware Products Co. Ltd

Description: Model DC7 is a custom aluminum part made of aluminum and processed using high-pressure die-casting. Material used has tensile strength that is nearly two times higher than that of ordinary cast alloys.

Price: $0.20

MOQ: 5,000 pieces

Lead time: 10 to 20 days

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Aluminum, high-pressure investment casting

Company: Shenzhen Smart Mold Technology Co. Ltd

Description: The Customized Aluminium Parts-A-003 is made using high-pressure investment casting. Shenzhen Smart Mold accepts 3D drawings in STL, X-T and STP formats.

Price: $3.50 to $4.50

MOQ: 500 pieces

Lead time: 20 to 30 days

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