Analyze the process and function of electroplating on the surface of automobile stamping parts

2023-02-21 09:08:08

Reasons for loss of stamping die

(1) The material of the main working parts of the mold is faulty. Poor material performance and wear resistance; The mold steel is unrefined and has a large number of smelting defects; The forging process of the convex and concave die and the forging blank is not perfect, and there are still hidden dangers of heat treatment.

(2) The design of die structure is not reasonable. There is no reinforcement device designed for the slender punch, the discharge port is blocked and there is accumulation, and the excessive discharge force aggravates the alternating load of the punch.

(3) The die making process is not perfect, which is mainly reflected in the poor internal quality of the convex and concave die forging blanks, and the problems in the heat treatment technology and process, resulting in the convex and concave die hardening, soft spots and uneven hardness. Sometimes microcracks, even cracks, grinding and polishing are not in place, and the surface roughness value is too large.

(4) No lubrication or lubrication but poor effect.

The surface treatment processes of automobile stamping parts are gold plating, silver plating, nickel plating and zinc plating.

Gold plating: the surface treatment of the workpiece is not only beautiful, but also not easy to oxidize, but the cost is high.

Silver plating: plating a layer of silver on the surface treatment, the contact resistance is less, the conductivity is better, and it is not easy to oxidize.

Nickel plating: Nickel plating is a common treatment method for the surface treatment of automobile stamping parts. Its function is to facilitate the welding of products, which is not easy to oxidize, and has good conductivity.

Galvanizing: beautiful, rust-proof, improve its protective and decorative function.

The role of surface treatment in the production of automobile stamping parts is: oxidation resistance, easier conductivity, rust prevention, decoration and improvement of product performance.