图片名称

Influencing factors of performance of ring chain used in mining

RELEASE TIME :

2018-05-04

The quality of steel will affect the performance of high-strength ring chain used in mining. When the ring chain is qualified in terms of chemical composition, geometric size and other aspects, if the non-metallic slag inclusion in the metallological structure of the steel state exceeds the requirements and the austenite grain size is greater than 5, the ring chain will have poor welding performance and other phenomena. The welding process of the ring chain is exquisite

Some friends find that sometimes the ring chain can not fully play its function, so in what circumstances will affect the performance of the ring chain? Listen to us break it down.
As the most typical chain product of our company, the service performance of the ring chain is constantly changing, so what on earth affects the service performance of the ring chain so that it can not shine brightly in the work?
The quality of steel will affect the performance of high-strength ring chain used in mining. When the ring chain is qualified in terms of chemical composition, geometric size and other aspects, if the non-metallic slag inclusion in the metallological structure of the steel state exceeds the requirements and the austenite grain size is greater than 5, the ring chain will have poor welding performance and other phenomena. The welding process of the ring chain is exquisite. In addition, the correct process of heat treatment, the qualified pre-tensile stress, the difference of working conditions of the ring chain and the quality problems of the welding surface of the ring chain, such as burn cracks, will affect the normal play of the ring chain.

  In the wide use of the ring chain, there are many small problems. In the use of the ring chain, due to the simultaneous operation of two forces (tensile stress and shear stress) at the flat part, plastic deformation is extremely easy to occur at this part, and the degree of deformation is the largest, which leads to the initiation of micro-cracks at the foot of the ring chain. The surface scars of the stainless steel ring chain aggravate the stress concentration on the surface. The fracture at the shoulder of the ring chain has the characteristics of good shear fracture, while the inner part of the foot produces microcracks under the action of shear force, and the microcracks expand and lead to fracture. There are obvious crack sources, radiation areas and shear lips in the fracture. The fatigue failure of the ring chain is due to this.
As a result of the heavy workload of the ring chain, it may not be able to guarantee the perfect working state after a period of use, but we can improve the shortcomings of every small step, and strive to make our chain a comfortable experience of "physical and mental relaxation".

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