The Most Important Aspect Of Fastener Development And Design Is Quality Control

The most important link in the development and design of fasteners is quality control. There are several major checkpoints from feeding to finished product shipment, and these checkpoints have different inspection methods. Firstly, the incoming materials are related to appearance, size, elements, performance, detection of harmful substances, and so on; In terms of process, there is more emphasis on appearance, size, impact testing, and forging flow lines; Heat treatment focuses more on appearance, hardness, torque, tensile strength, metallography, and so on; Surface treatment mainly involves hydrogen embrittlement testing, coating, salt spray, etc., including the detection of harmful substances during shipment. In terms of size and appearance inspection, the common ones are anime, profilometer, CMM and image sorter (this is a full sorter); In terms of mechanical and chemical testing, there are mainly hardness machines (Rockwell and Vickers), tensile machines, and metallographic microscopes; In terms of material testing, there is a spectral analyzer and a salt spray testing machine.