How to clean screw bolts?

What are the failures of screw bolts?
The blackening of screw bolts is generally due to the high heat generated during cold heading or tooth rubbing. It occurs in the cross-groove part. During the production process, the supply of lubricating oil can end the heat relaxation in time. The speed of the machine can also be appropriately lowered to prevent the occurrence of problems. In addition to technical reasons, the blackening of screw bolts may also be caused by the material.

As the constant use of the machines, the screw bolts can be easily loose. In order to prevent spontaneous loosening, it is necessary to eliminate the sliding between the connected parts.

The attachment of dust or heterogeneous metal particles and the condensed water of the screw bolt form a micro battery, triggering an electrochemical reaction. The protective film is damaged. The surface of screw bolts adheres to the organic juice, which forms organic acid that will corrode the metal surface.

Sometimes, screw bolts are often seen cracking. The quality of the materials selected for the screw bolts is problematic. There are process problems in producing screw bolts. In addition, there is too much force used on screw bolts.