Mining chains are mainly used for mining, with relatively high requirements and a large toughness coefficient. At present, domestic mining chains are divided into B grade, C grade and D grade according to the strength grade. The materials are 25MnV and 23MnCrNIMo54. It is divided into flat chain, reinforced chain and anti-corrosion chain:
The reinforced mine circular chain series adopts forged vertical rings and special heat treatment, which has high tensile strength, long fatigue life and high toughness of domestic chains, and the optimal hardness distribution of each ring reduces the chain ring. The wear and tear between them significantly increases the service life.
Anti-corrosion mine circular chains and compact chains, developed for corrosive working conditions, developed a special raw material for anti-corrosion chains.When the water on the ground of the coal mine is particularly corrosive, corrosion pits and fatigue cracks will occur in ordinary chains. The anticorrosive mining chain is almost not affected by corrosion.
