Metal stamping parts processing technology requirements
Metal stamping parts processing technology requirements 1, the use of the raw materials of metal stamping parts processing, must be in accordance with GB 710-65 the premise of high quality carbon steel thin plate technology, GB 2517-81 'the general structure of strip steel and steel belt' on metal material such as scale, and comply with the material supply status, or other requirements.
2, metal stamping parts of the raw materials should have the quality certificate, it ensure the materials meet the defined technical requirements.
When there is no quality certificate or for other reasons, dongguan hardware stamping parts production factory to conduct re-inspection according to need to select raw materials.
3, chemical analysis, metallographic examination, content of chemical element in the analysis of materials;
Determine level of material grain size and the average level;
Evaluation materials free cementite, banded structure and nonmetallic inclusions level;
Check the material defects such as shrinkage cavity, loose.
Forming functional test: the material bending test, cupping test, determination of material strain hardening index n value and plastic strain ratio r value, etc.
About steel plate forming function test method, can according to the function of sheet metal forming and the test method of delimitation.
4, hot dongguan precision metal stamping parts and surface state below cold dongguan metal stamping parts, but still is better than that of castings, forgings, cutting processing capacity.
Determination of other functional requirements: the electromagnetic functional materials and the determination of coating, coating adhesion ability, etc.
5, stamping can make other methods are difficult to manufacture with reinforcing rib, rib flanging, ups and downs, or artifacts, in order to progress its rigidity.
Because of using precision mould, workpiece precision can reach micron grade, and repeat precision is high, the specification is consistent, can punch a hole nest, convex sets, etc.
A: metal stamping parts defects following design