Popularization of testing knowledge of metal stamping parts

The hardness test of metal stamping parts adopts Rockwell hardness tester. Small stamping parts with complex shapes can be used to test the plane is very small, can not be tested on the ordinary desktop Rockwell hardness tester.

Stamping processing includes punching, bending, deep drawing, forming, finishing and other processes. The materials processed by stamping parts are mainly hot-rolled or cold-rolled (mainly cold-rolled) sheet metal materials, such as carbon steel plates, alloy steel plates, spring steel plates, galvanized plates, tin plates, stainless steel plates, copper and copper alloys Plate, aluminum and aluminum alloy plate, etc.

The PHP series portable surface Rockwell hardness tester is very suitable for testing the hardness of these stamping parts. Alloy stamping parts are the most commonly used parts in metal processing and mechanical manufacturing. Stamping processing is a processing method that uses molds to separate or shape metal strips. Its application range is very broad.

The main purpose of the hardness test of stamping parts is to determine whether the annealing degree of the purchased metal sheets is suitable for the subsequent stamping parts processing. Different types of stamping parts processing techniques require plates of different hardness levels. The aluminum alloy plate used for stamping parts can be tested with a Webster hardness tester. When the material thickness is greater than 13mm, the Barcol hardness tester can be used. The pure aluminum plate or the low hardness aluminum alloy plate should use the Barcol hardness tester.

In hardware stamping parts manufacturers, stamping is sometimes called sheet forming, but there is a slight difference. The so-called sheet forming refers to the forming method that uses sheet material, thin-walled tubes, thin profiles, etc. as raw materials for plastic processing, collectively called sheet forming. At this time, the deformation in the direction of the thick plate is generally not considered.

Metal stamping parts inspection knowledge

The stamping market and technical level of our country As many stamping factories belong to the main engine factory, therefore, the stamping parts market is very imperfect and sound. But the market for small stamping parts is very mature in some parts of the south. Judging from the current situation, my country's Dongguan hardware stamping parts manufacturers have the following problems:

(1) Some production capacity is oversupply, and some stamping plants in OEMs cannot put it away or hold it. In most of the year, there are insufficient production tasks and no market behavior.

(2) The market competition of household appliances and electric appliance stamping parts industry is fierce. However, there are not many internationally competitive companies that have become a climate.

(3) No one has conducted serious research on the stamping parts market. The stamping parts market is messy.

In the above-mentioned market conditions, technological development is restricted, and the entire industry is also lagging behind, manifested in:

(1) The overall level is low, and many industries have excess production capacity and lack high-end technology. Technological progress is slow.

(2) The material technology, mold technology, lubrication technology and equipment level are all at a relatively low level, far from meeting the needs of domestic production development.