Stamping technology

Stamping technology
Stainless steel sheet stamping features
(1) The yield point is high, the hardness is high, the cold work hardening effect is significant, and defects such as cracks easily occur.
(2) The thermal conductivity is worse than that of ordinary carbon steel, leading to a large deformation force, large punching force and deep drawing force.
(3) The plastic deformation is severely hardened when deep drawing, and the thin plate is easy to wrinkle or fall out.
(4) The drawing mold is prone to sticking to the deep drawing dies, resulting in serious scratches on the outer diameter of the parts.
(5) When deep drawing, it is difficult to reach the desired shape.
Stamping notes
(1) Due to poor thermal conductivity compared to ordinary low carbon steel, the required deformation force is large;
(2) When the stainless steel sheet is deep-drawing, the plastic deformation hardens hard, and when the sheet metal is deep-drawn, it is easy to wrinkle, which requires a large blank holder force;
(3) The springback caused by bending and reverse bending of the sheet material at the corners of the drawing die will usually cause depressions in the sidewalls of the product. Products that require higher dimensional accuracy and shape require an additional shaping process.
(4) Adhesion of tumors is likely to occur during drawing of stainless steel sheets.

Parts inspection standards
1, stainless steel tube uniform color, no color.
2, stainless steel tube uniform finish, can not appear dull, or vague phenomenon.
3, stainless steel pipe surface without dense trachoma diameter of less than 0.1mm. A 6-meter tube does not allow 2 needle size blisters.
4, The round pipe body is sleek, with no unevenness, and it is not allowed to have obvious curvature and deformation. The straight line is less than 3 mm within 1 meter.
5, the surface of the outer surface of the pipe body welds does not allow significant flat phenomenon, feel good.
6, The round pipe body must not be allowed to have the sand belt printed on it that is obviously polished, or the hemp wheel print or mechanical pattern.
7, The inner wall of the weld of the pipe body is not perfect, and the weld seam cannot have a height of 0.1 mm (except for the φ9.5 pipe)
8, round pipe can not be threaded or scratch phenomenon