What are the standards to classify the installation process of automobile stamping parts?

2020-05-31 09:51:30

If the installation process of automobile stamping parts is classified, stamping is generally divided into two major processes: forming and separation. Each process has its own inspection standard. The goal of forming is to make the sheet material into the required shape and size without breaking the blank. The purpose of the separation process is to separate the stamping parts from the sheet metal according to the established objectives, and at the same time, it is necessary to ensure that the quality of the separation section meets the standard requirements.

The precision of the first mock exam is very good, basically the same size and uniform size, smooth surface and good inner quality. Moreover, it can meet the general assembly requirements without further machining, which saves a lot of cost and time. It is highly praised in the industrial field. So now stamping parts are more and more widely used in industrial production.

The reason for the loss of stamping die.

(1) The material selection of the main working parts of the mould is improper. The material performance is not good and wear-resistant; the die steel is not refined and has a large number of smelting defects; the process of changing the convex and concave die into forging blank is not perfect, and there are hidden dangers of heat treatment.

(2) Die structure design problem, die structure is unreasonable. There is no reinforcement device for the slender punch, the discharging port is not smooth, and the excessive discharge force makes the punch bear alternating load more severe.

(3) The imperfection of the die making process is mainly manifested in the poor internal quality of the convex and concave die forging blank, and the problems of the heat treatment technology and process, resulting in the incomplete quenching of the convex and concave die, as well as the uneven soft spots and hardness. Sometimes there are microcracks, even cracks, grinding and polishing are not in place, and the surface roughness value is too large.

(4) No lubrication or lubrication, but the effect is not good. The surface treatment processes of automobile stamping parts are: gold plating, silver plating, nickel plating and zinc plating.

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

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

Nickel plating: the surface treatment of automobile stamping parts nickel plating is a common treatment method, its role is to facilitate the welding of products, not easy to oxidize, and good conductivity.

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

The functions of surface treatment in the production of automobile stamping parts are oxidation resistance, easier conduction, rust prevention, decoration and improvement of product performance.