Hardware is the mother of industry; the foundation of national defense, and the products of metal stamping hardware materials are usually divided into two categories: large hardware and small hardware. Large hardware refers to steel plates, steel bars, flat iron, universal angle steel, channel iron, I-shaped iron and various types of steel materials, while small hardware refers to construction hardware, tinplate, lock nails, iron wire, steel wire mesh, steel wire cutters, and household hardware , Various tools, etc.
Basic requirements for metal stamping materials: From the perspective of stamping processing, the mechanical properties, surface quality and thickness tolerance of stamping materials should meet the following basic requirements:
1. The material used for punching of metal stamping parts should have sufficient plasticity and low hardness to improve the quality and dimensional accuracy of the punching section. Among them, the punching performance of soft materials is good, the quality of punching sections of hard materials (such as stainless steel and high carbon steel) is poor, and brittle materials are prone to tearing during punching.
2. The material used for bending should have sufficient plasticity, low yield strength, and high elastic modulus. Among them, materials with good plasticity are not easy to bend and crack, and materials with lower yield strength and higher elastic modulus have lower rebound.
3. The material used for deep drawing of metal stamping parts should have better plasticity, lower yield strength and hardness, and larger plate thickness directivity coefficient. Among them, materials with high hardness are difficult to be deep-drawn; materials with a small yield ratio or a large directional coefficient of plate thickness are easy to be deep-drawn.
