Cement production and casting wear-resistant material

In the cement production process need to apply a lot of wear-resistant materials, which also has

Author:

In the cement production process need to apply a lot of wear-resistant materials, which also has a non-casting foundry, and on the current market, casting wear-resistant material in cement production applications in a very wide range. Casting wear-resistant materials are manufactured by casting smelting way out, and forging essentially different.

The first generation of wear-resistant materials ------ high manganese steel. Pros: excellent toughness, work hardening occurs under conditions of strong impact. Disadvantages: easy plastic deformation, do not wear. Currently, high-manganese steel, alloy high manganese steel and ultra-high manganese steel only for large crusher hammer, hammer, impact plate, grate plate, jaw crusher and cone crusher jaws and outside the cone, and other consumables.

The second generation of wear-resistant materials ------ Nickel hard cast iron. Advantages: high hardness, good wear resistance. Disadvantages: brittle, small applications. Currently, the only part of the vertical roller mill nickel hard cast iron, very few other applications.

The third generation of wear-resistant materials ------ high chromium cast iron and various alloy steel. High chromium cast iron advantages: high hardness, wear resistance, toughness than the nickel-hard cast iron greatly improved. Disadvantages: Under conditions of high impact toughness still inadequate. Steel Advantages: carbon content can be adjusted by adding different content of alloying elements and corresponding heat treatment process, to obtain a wide range of hardness and toughness to match the mechanical properties, a wider range of applications.

Climax Molybdenum Company of the United States took the lead from 10 to 30% chromium white iron alloys have been studied and found that high chromium cast iron has many advantages. First: In 12% chromium carbide Cr7C3 can be formed, micro hardness HV1300 ~ 1800, than the average white Fe3C iron carbide micro hardness (HV800 ~ 1100) is much higher, so the good wear resistance ; Second: breaking into a net shape carbide, daisy-like, and therefore higher toughness than carbide network; in addition, high chromium cast iron matrix can be obtained from all of the austenite to martensite through different heat treatment process The various substrates, to expand its range of applications to meet the needs of different working conditions.

Crushing and grinding and grinding steel balls mainly applied in cement, the most widely used on the market today is chrome alloy casting ball, high cost, to maximize cost savings and improve efficiency. Cement production should select high-quality high-chrome ball, as Ningguo wear open-source production of high chrome ball, high hardness, wear resistance, low round loss, broken rate, is the ideal choice for cement companies.

Previous post:China's steel exports have fallen sharply curb exports policy

Key words: