Introduction to the Wear-resistant Materials of Mining Machinery

Date:09/12/2013 11:51:52

The central task of mining machinery is to crush ore into the appropriate size. Therefore, the wear-resisting degree of materials that touch with stone directly is very important. Hongxing Machinery, as an enterprise involved in mining machinery industry in China earlier, is very exquisite in the selection of wear-resistant materials.

Hongxing engineers design different crushing ways according to the different crushing degrees and crushing orders in the whole crushing production line. In recent years, they have developed the mobile crushing station which is a milestone in crusher production. However, even if the design is exquisite, if the part that crusher hammerhead contacts with stone directly did not have enough wear-resisting degree, the elaborate design will not be able to reflect the wisdom contained in crusher well. Then, what is the history for the development of crusher wear-resistant materials, and how is it developing now? Hongxing will give you the detailed introduction.

Wear-resistant material is used in the production of mill lining plate, separating storehouse plate, grate plate, crusher hammerhead, plate hammer, impact plate, jaw plate, vertical mill roll, disk and other parts, and has developed into the third generation. The first generation of wear-resisting material which is known as high manganese steel has wonderful toughness and produces work hardening under the condition of strong shocks, but it is not suitable for the low impact load or stress. The second generation of wear-resistant material is nickel cast iron, and it has high hardness and good wear-resisting performance. But because the slight hardness and toughness and higher cost, it has gradually left the wear-resisting market.

The third generation of wear-resisting material contains high chromium cast iron and all kinds of alloy steel, which is a kind of wear-resistant material with good performance and can be used in the production of small and medium-sized mill lining plate, small crusher hammerhead and plate hammer, vertical mill roll and other crushing equipment. Alloy steel has higher toughness and hardness, good comprehensive mechanical performance and wide application range. Alloy elements and the corresponding heat treatment process can be added into it according to the content of carbon, but its wear-resisting performance is bad, and the casting is easy to crack if the water quench process control is bad.