How about the development of stamping technology of hardware automobile in the future?

2019-11-12 17:16:58

Metal stamping industry is a very wide range of industries, deep into all aspects of the manufacturing industry, in foreign countries, metal stamping is called sheet forming. In our country, there are also such names. What is China's metal stamping industry like? How is it abroad? How do we go? That's what we all care about.

Metal stamping process: metal stamping process can be roughly divided into separation process and forming process (including bending, drawing and forming). The separation process is to separate the metal stamping parts from the blank along a certain contour line in the process of metal stamping. At the same time, the quality of the separation section of the metal stamping parts should meet certain requirements. The forming process is to make the metal stamping blank plastic deformation under the condition of no damage, and transform it into the required finished product shape, and also meet the requirements of dimensional tolerance

According to the temperature of metal stamping, there are two ways: cold metal stamping and hot metal stamping. It depends on the strength, plasticity, thickness, deformation degree and equipment capacity of the material. At the same time, the original heat treatment state and end use conditions of the material shall be considered.

1. Cold metal stamping metal processing under normal temperature is generally applicable to blank with thickness less than 4mm. The utility model has the advantages of no heating, no oxide skin, good surface quality, convenient operation and low cost. The disadvantage is that there is work hardening phenomenon, which makes the metal lose further deformation ability. Cold metal stamping requires that the thickness of the blank is uniform and the fluctuation range is small, the surface is bright and clean, without spot, scratch, etc

2. Hot metal stamping the metal stamping processing method of heating the metal to a certain temperature range. The advantages are to eliminate internal stress, avoid work hardening, increase material plasticity, reduce deformation resistance, reduce power consumption of equipment, die structure: die is a tool to separate or deform sheet metal. It consists of upper die and lower die. The die handle of the upper die is fixed on the slide of the press and moves up and down with the slide, while the lower die is fixed on the working table of the press.

Punch and die are the working parts of the die that make the blank deform or separate. They are fixed on the upper and lower templates respectively by pressing plates. The upper and lower templates are respectively equipped with guide sleeves and guide pillars to guide the alignment of punch and die. The guide plate and the locating pin are respectively used to control the feeding direction and the feeding length of the blank. The function of the discharging plate is to make the workpiece or blank come out of the punch after the hardware is punched.