部品のスタンピング

Some important factors to keep in mind:

Plasticity and Grain Direction – Plasticity is a measure of the permanent deformation a material undergoes when subjected to stress. Metals with greater plasticity are more susceptible to forming. Grain direction is important in high-strength materials, such as tempered metals and stainless steel. If bending occurs along a high-strength grain, cracking is more likely.

Bending Deformation/Expansion: Bending deformation causes expansion of up to 1/3 of the material thickness. This deformation/expansion becomes more severe as the material thickness increases and the bend radius decreases. Web and "mismatch" cutting: This involves making very slight indentations or protrusions in the part, typically about 0.1mm deep. This feature is not required when using composite or transfer tools, but it is essential when using progressive dies.

Advantages and Limitations of Stamping

Advantages:

- Low cost: In mass production, the cost per part can be reduced to one-third of that of a cast part;

- High consistency: Dimensional tolerances can be controlled within ±0.1mm;

- High material utilization: Through nesting optimization, the utilization rate can reach over 85%.

Limitations:

- Long mold development cycle and high initial investment, making it unsuitable for large-scale production;

- Complex three-dimensional structures (such as hollow crankshafts) require integration with other processes.

Core Application Areas of Stamping Parts

1. Automotive Industry: Accounts for over 60% of total stamping part demand, including body panels and chassis components;

2. Electronics and Electrical: For example, metal mobile phone frames and heat sinks, thicknesses can be as thin as 0.2mm;

3. Home Appliance Industry: Refrigerator panels, air conditioner housings, etc., where surface aesthetics can be enhanced through electroplating or spraying.