The main failure in the form of cold mold overload failure , wear failure , failure and fatigue failure occlusal four forms .

( 1 ) overload failure. Failure mold material itself is not sufficient to resist the carrying capacity due to work load . When less prone to brittle fracture toughness and crack easily when there is insufficient strength upsetting deformation and failure . Cold heading and cold extrusion dies prone to such failure.

( 2 ) wear failure . Die working parts and the friction loss between the material to be processed , the working portion ( blade , punch ) to change the shape and size and cause failure. The size and quality of the work surfaces require high blanking die , extrusion die prone to such failure.

( 3 ) failure of engagement . Mold work site and be added to the friction material at high pressure , the lubricating film rupture bite - processed material " cold welding " to the mold surface , caused by scratches the surface quality of processed products , such as failure. In the drawing, bending modulus and prone to cold extrusion die such a failure.

( 4 ) Multi- punch fatigue failure . Cold mold to withstand impact loads are to a certain speed, and repeated the role of energy , and its working status with little more energy impulse fatigue testing similar. Due to the high mold material hardness , fatigue life and more and more rushed around 1000-5000 times , but accounted for the vast majority of crack initiation , fatigue crack growth area source and obvious . Multi- fatigue failure is common in heavy duty punch dies, such as cold extrusion , cold heading punch mold.

Su's heat treatment Co. Ltd. was founded in 1990, after decades of development, scale is continually expanding, is located in Shajing Town Baoan District Shenzhen City Bridge second industrial zone, covering an area of 3000 square meters, the main business is to take all the metal, alloy steel, beryllium copper, heat treatment of high speed steel, cryogenic treatment (-196 C), nitrogen gas, liquid nitrogen, QPQ salt bath production line, high-frequency quenching, blackening and carburizing, the surface of hard and stainless steel processing.
The company is equipped with power of heat treatment technology, established a perfect quality testing equipment, equipped with vacuum quenching furnace, vacuum furnace, pit furnace, furnace, liquid nitrogen atmosphere furnace, rotary furnace, large mesh belt furnace, improve metallographic inspection equipment, material failure analysis, scientific management and complete, rigorous technology, skilled operation.
Company will be excellent quality and perfect service, and actively challenge, satisfy customer demand, has passed ISO9001:2000 in 2003 September (SGS) international quality certification. Has now become a reputable manufacturers.