As we know, metal stamping parts are made of steel or some non-ferrous metal parts. Stamping and drawing parts are widely used in various fields, including some electronic devices, auto parts, decorative materials and so on. What is the nature of its work!

Drawing parts processing is the production technology of making the sheet material directly subject to the deformation force in the mold with the help of the power of conventional or special stamping equipment, so as to obtain the shape, size and performance of the product parts. Sheet metal, die and equipment are the three elements of stamping. Stamping is a method of metal cold deformation. Therefore, it is called cold stamping or sheet metal stamping. Compared with castings and forgings, metal stamping pieces are thin, even, light and strong. Hardware stamping parts stamping can produce other methods difficult to manufacture with reinforcing bars, ribs, ups and downs or flanging of the workpiece, to improve its rigidity.

Cracking is a common problem in the process of stretching. When the tensile stress of the cylinder wall place exceeds the strength of the material, the product will be pulled crack, crack generally appeared in the cylinder wall on the rounded corner of the punch. The factors that affect the product crack include: tensile properties of materials, diameter and thickness of materials, coefficient of drawing depth, radius of rounded corners of concave and convex dies, blank holder force, friction coefficient and so on. The rounded radius of concave and convex die is too small, too sharp, it is easy to crack the product, the general way to repair the mold is to find a way to increase the rounded corners, rounded corners make a little smooth, throw a little bright, it is not good in the production of refueling can also be, especially stretching special oil, very effective. When designing the stamping die, we can increase the rounded corners as much as possible under the circumstances of customer's product requirements. Don't make it too pointed. Some designs are not well understood. I'm sick of it. When drawing, the lubrication is used, which is beneficial to the smooth process of drawing, and the thinning of cylinder wall is improved. Note, however, that lubricants should only be applied to the working surface of the die and should never be lubricated on the surface where the die and the material come in contact, as there is a favorable friction between the die and the rough surface, which prevents the material from sliding, cracking, and thinning.

Deburring method of stamping drawing parts:

Stamping drawing pieces often appear burr, so how to remove this burr? Let's find out!

According to different parts of the burr, we can choose different tools to remove it.

Hole: use a chamfering tool or a larger bit front end.

Edge: use file, whetstone, sandpaper, grindstone.

Welding slag: it can also remove the brittle burrs with the tool of removing welding slag by vibration.

Outside diameter: machining process on the lathe Angle guide.

There are also polishing, grinding, sandblasting and other tools.