Guide to die casting

Introduction

A well-designed approach can significantly improve your manufacturing experience. If you’re new to the aluminium die casting supplier business or want to brush up on your die casting design skills, this aluminium die casting design guide is for you. This design guidance will be beneficial to mechanical engineers and product designers. We discuss critical design considerations and constraints that can greatly simplify the aluminium die casting process, thereby lowering the casting factory’s costs.

Aluminium die casting design guide

Design requirements

When creating an aluminium die-cast part, the application, aesthetics, performance, precision and, most significantly, the cost must all be considered. To begin, as a casting supplier you must decide what you want to accomplish with each of your components and balance your objectives to stay within your budget. We’ve highlighted the critical points to consider while developing a part in this section.

Function

When creating a product, it is necessary to consider its intended use. Aluminium die-cast components can be used for structural as well as cosmetic purposes. As a result, die casting has become a popular substitute for other processes.

Because modern computers are significantly more powerful than previous generations, the accuracy achievable through die casting has increased by a factor of ten. Along with their high structural integrity, die-cast components also have an excellent visual appearance.

You should specify to the die caster precisely how your components will be used. They can help you select the appropriate material and establish appropriate tolerances for design parameters based on your requirements. Additionally, you should consider corrosion resistance, strength-to-weight ratio and conductivity.

However, customers frequently end up paying for a level of quality and strength that considerably exceeds their requirements. Thus, having a firm grasp of the intended use of your components will give you a better understanding of the die casting manufacturing process.

Appearance requirements

The appearance of an internal aluminium die casting component is largely irrelevant. However, it is critical when the component is an external casting, such as a housing or casing.

End users will always prefer visually appealing products. Thus, regardless of a component’s effectiveness, buyers will place a premium on its appearance. As a result, external die-cast components should be attractive.

You should therefore design your components with aesthetics in mind. Plan in advance for the type of surface finish you want. A high-quality finish can provide another layer of protection against adverse weather conditions.

Assembly method

Assembly of aluminium die casting components can be reasonably straightforward or quite complex, depending on the intricacy of the components. Die casting machinery used in the past had some limitations on the types of items that could be cast. Thus, casting intricately detailed pieces was previously difficult.

However, complex items can be separated into suitable segments and then assembled using a suitable assembly method after casting. Typical die casting assembly methods include the following:

• Fastening
• Threading
• Welding
• Injected metal assembly
• Cored holes, etc.

Before you begin designing, you must decide on an assembly approach for your die-cast components, because the assembly process has a significant impact on the design. Select the assembly method that best suits your needs.

Cost budget

You should conduct a thorough cost study of your project, because financial constraints have a direct impact on your die casting manufacturer. Your design must be completed in accordance with your budget.

A skilled designer can significantly cut die casting costs without sacrificing the quality of your components. To avoid overdesigning your components and incurring extra expenditure, you should adhere to specific design standards.

For instance, by including pockets, you can create lighter components without sacrificing performance. This lets you save money on materials. Then, by minimising or eliminating undercuts and sharp corners, the cost and difficulty of tooling and casting can be significantly reduced.

Product structure design

Designing an aluminium die-cast part properly involves numerous obstacles. Even the tiniest details in a design can significantly affect the casting process. As a result, each detail should be carefully considered in accordance with the specified criteria.

We have concentrated on the primary characteristics of aluminium die casting design. You’ll discover recommended precisions for a variety of critical aspects and learn about the design concerns you should keep in mind while developing your product.

Material selection

The design of the product can change greatly depending on the material used. Each type of alloy imposes certain restrictions. To ensure the integrity and strength of your aluminium die-cast components, rigorous design and execution are required.

Aluminium’s properties, such as weight, fluidity, strength, conductivity and melting temperature, can vary according to the alloying elements used. However, not all alloys are suitable for die casting.

Popular aluminium alloys for die casting include the following:

• A380
• A383 (ADC12)
• A413

Numerous other aluminium alloys are also available. You must select the appropriate aluminium alloy based on your specifications and budget constraints.