It is a forming processing method that applies external force to plates, strips, pipes and profiles through punches and molds to cause plastic deformation or separation, thereby obtaining workpieces of the required shape and size. The resulting workpiece is a stamping part.
Stamping can produce workpieces with reinforced ribs, ribs, undulations or flanges that are difficult to manufacture by other methods to improve their rigidity. Due to the use of precision molds, the accuracy of the workpiece can reach micron level, with high repeatability and consistent specifications. Holes, bosses, etc. can be punched out. Compared with castings and forgings, stamping parts are thin, uniform, light and strong.
The stamping part we are going to test this time has a lot of stamped copper bubbles on it. If you are not careful during stamping, it is very likely that small bubbles with cracks will be punched out. Stamping parts with cracks do not meet the customer's qualified product requirements.At the same time, since product defects are not easily visible to the naked eye, these stamped copper sheets need to be inspectedAir tightness testing。
It can be seen from the appearance of the stamped parts that this copper stamped part does not have any inflatable port, and the product is relatively thin and small. It is necessary to make a mold that fits the product very well, and use indirect testing methods to test the sealing of the product.At the same time, the customer's production volume is relatively large, and he hopes to build a one-output two-output air tightness testing equipment, so that two products can be tested at the same time.
The requirement for this air tightness test is to detect products with crushed air bubbles on stamped parts. If the product is damaged by stamping, the pressure in the mold will enter the inside of the stamped parts when inflated. Defective products can be detected based on changes in the air pressure inside the mold.
Based on multiple tests of the product, the final air tightness test parameters set for this stamping part are: test pressure 10kpa, leakage upper limit 0.05kpa, inflation time 5s, pressure stabilization time 5s, test time 5s.
After setting the test parameters, you can connect the air tightness detector and the test tooling together through the factory air source. In the initial stage of each test, first test a qualified product to check whether the test result shows OK; then test a defective product to check whether the test result is bad.After the test results are consistent with the actual situation of the product, the product can be tested in batches.
Hirays Technology has conducted air tightness testing on tens of thousands of products.Air tightness testingThe cases are rich and extremely mature.The products tested range from small household appliances and electronic products used in daily life to medical products and industrial products. We can provide you with test cases to share.
If you are interested in air tightness testing equipment, please call Hirays Technology.
