automobile stamping dies, in a narrow sense, refer to the collective term for molds used to stamp all parts on a car body, also known as “automotive body stamping molds.” Examples include roof edge flanging molds, crossbeam reinforcement plate forming molds, and more.
The main materials for automotive stamping molds include carbon tool steel, low-alloy tool steel, high-chromium steel, medium-chromium tool steel, and high-speed tool steel. For instance:
Carbon tool steel, such as T10A
Low-alloy tool steel, such as CrWMn
High-chromium steel, such as Cr12 or Cr12MoV
Medium-chromium tool steel, such as Cr5MoV
High-speed tool steel, such as W18Cr4V
Additionally, hot-rolled dual-phase steel is commonly used to manufacture high-strength automotive parts, such as roll-formed wheel spokes and other structural stamped components.
The choice of materials for automotive stamping dies must consider their working conditions and performance requirements. For example, the use of high-strength steel sheets can reduce the weight of stamped parts, save energy, and lower production costs. Dual-phase steel (DP steel) is often used for automotive parts requiring high strength and superior collision absorption capabilities, such as wheels, bumpers, and suspension systems.
Stamping dies play a critical role in automobile manufacturing by processing materials into parts or semi-finished products through cold stamping. This process is carried out at room temperature, using dies installed on presses to apply pressure to the material, causing it to separate or plastically deform, thereby achieving the desired parts.
Moreover, the classification of dies steel is primarily based on criteria such as application, material type, hardness, and production processes. Different classification standards cater to various mold manufacturing needs. Selecting the appropriate mold steel can enhance the dies durability and performance.
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