Sheet metal processing quality standards

Sheet metal processing is a cold working process, which includes various processes such as bending, welding, shearing, and forming. Each of these processes is very important. To process a sheet metal part requires multiple processes, and their order varies from product to product. Every sheet metal part will have quality standards. The sheet metal parts need to be processed well and need to be controlled in all aspects. Its appearance and accuracy must be strictly implemented in accordance with the standards. The sheet metal parts produced will have good quality. Let's take a look at the quality standards of sheet metal processing.

First of all, let's take a look at the machining accuracy of CNC equipment for sheet metal processing, as shown in Table 1. It can be seen from the table that GB/T 1804-m or ISO 2768mK is basically applicable to the unmarked tolerances of linear dimensions for laser or digital punching parts (but the size segmentation is not suitable for sheet metal products), but not It is suitable for checking the size of sheet metal parts after bending or welding. For sheet metal products with spraying and assembly processes after the bending process, it is unscientific to apply the above two standards. The size and shape tolerances of general welded structural parts can refer to GB/T 19804-A or ISO 13920-A. carried out.