In the whole process of applying Dacromet bolt, there are always such or that kind of problems. We will analyze what will happen.
1. Raw material: stainless steel plate, aluminum alloy profile and aluminum alloy made Dacromet bolt external thread often produce lock or jam. This kind of metal material aluminum alloy has excellent plasticity, and has the substantial difference with the carbon steel. The actual difference is as follows: Dacromet bolt has corrosion resistance characteristics, and when the surface is destroyed, a thin layer of air oxidation layer will be created on the metal surface to avoid further and deeper erosion. When the Dacromet bolt is locked, the working pressure and heat generated by the lips will be destroyed and the chromium oxide layer in the middle of them will be wiped off, which will cause the metal material teeth to be immediately blocked or cut, and then adhesion will be produced. When the bonding condition occurs again, the Dacromet bolt will be locked and can no longer be removed or locked. Generally, this series of blocking, laser cutting, sticking and locking positions can be generated in a short period of time. Therefore, Dacromet process to grasp the characteristics of the commodity and follow the appropriate operation steps is to avoid the Dacromet bolt lock step.
2. Cause of card lock condition:
(1) When assembling and matching anchor bolts and nuts manufactured by the same heat number, the probability of locking Dacromet bolts will be increased.
(2) The harm of the precision of the external thread. Matching of British thread level 6h and thread 6h will increase friction.
(3) In the raw material composition, the higher the copper composition, the higher the probability of locking the external thread. However, due to the deformation of cold forging, it is very likely to apply the raw materials with higher copper composition in the production and manufacture of Dacromet bolts. The raw materials used are likely to cause Dacromet bolts to be locked.
It is the difficult problem that Dacromet bolt will likely occur in the whole process of application and the reason for it. We hope to help you.
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