Do you know the difficulties of stamping parts?

2019-10-18 09:39:02

From the current point of view, we may not be very familiar with and understand the knowledge of stamping parts, but there is still a lack of this aspect, so it is necessary to understand.

Stamping parts, if defined specifically, is to apply a certain amount of external force to the raw materials through tools, presses and other equipment, so as to make them produce plastic deformation or separation, so that they can get the desired shape and size. This kind of workpiece is called automobile stamping parts. Stamping, on the other hand, is its forming method. The blank for stamping is generally hot-rolled or cold-rolled steel plate, strip, etc.

Stamping parts can be generally divided into hot stamping parts and cold stamping parts. The surface condition and precision of hot stamping parts are not as good as that of cold stamping parts, but better than that of castings and forgings, and the machining amount is less.

Question 1: the structure and accuracy of the die, as well as its manufacturing cost and service life, which aspects will affect the stamping parts?

The structure and precision of die will affect the forming and precision of stamping parts, while the manufacturing cost and service life will affect the cost and quality of stamping parts.

Question 2: what are the general stamping equipment?

There are many kinds of stamping equipment. Generally speaking, for thick plate stamping, hydraulic press will be used. However, for general stamping, it is carried out by mechanical press, etc.

Question 3: in the cold stamping of workpieces, is it necessary to lubricate the products?

This is absolutely necessary. The reason is that the temperature will rise rapidly in the process of cold stamping, so lubrication and cooling should be carried out to avoid problems.

Generally speaking, the main inspection methods of stamping parts are as follows:

Method 1: touch test

First, wipe the surface with gauze, then the inspector put on touch gloves and touch along the longitudinal direction of stamping parts. It is a fast and effective method, but it needs some experience.

Method 2: polishing of flexible gauze

First, wipe the surface with gauze, then use flexible sand net to cling to the surface of stamping parts, and polish the whole surface along the longitudinal direction to check whether there is any indentation or pockmark on the surface.

Method 3: Oil test

First wipe the surface with gauze, and then oil the whole surface. Pay attention to the same direction of oil application. After that, put it under strong light to check whether there are pockmarks, ripples, etc.