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Inspection method for appearance defects of stamping parts

1. Touch test method Clean the surface of the outer covering with clean gauze. Inspectors need to wear touching gloves and touch the surface of the parts vertically and close to the surface of the parts to sense the small bump on the surface of the parts. This inspection method depends on the inspe......

Two forming processes of spring

(1) Cold forming process of spring One time automation ability of cold forming process. At present, the cold forming machine has developed to 12 claws. The steel wire within the range of (0.3 ~ 14) mm is basically formed at one time by the 8-jaw forming machine. Current development direction of for......

What is the hexagonal bolts

A fastener consisting of a head and a screw. Bolts are divided into iron bolts and stainless steel bolts according to their materials, namely hexagonal head bolts (partial thread)-level C and hexagonal head bolts (full thread)-level C.

The status quo of Chinese hardware in the world

With the acceleration of China's integration into the global economic environment and the rapid rise of economic power, China has become the most dynamic economic region in the world. With relatively perfect economic facilities, mature industrial development and low labor cost, China has the compara......

Cleaning method of stainless steel spring

Precautions for stainless steel spring cleaning. During cleaning, please pay attention not to scratch the spring surface and avoid using bleach ingredients and detergent containing abrasive, steel wire ball (brush roller ball), abrasive tools, etc. In order to remove the detergent, wash the surface ......

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