Manufacturing process of composite abrasion-proof stick

Abstract

The invention relates to a method for producing composite friction-resistant rod, which comprises that drawing nanometer metal wire, processing wire, processing composite tube, processing skeleton of said rod, arranging composite tube, laying and welding, to obtain said composite friction-resistant rod which combines the friction-resistant rod skeleton and composite tube, used in rod grinder. The invention has high flexibility and strength of nanometer metal, low cost and high friction resistance, to prolong its service life. The invention has high yield, stable quality and low energy consumption.

Description

technical field [0001] The invention relates to mechanical equipment in the fields of general crushing, grinding, flotation and crushing, and in particular to a manufacturing process of a composite wear-resistant rod. Background technique [0002] Rod mills are widely used in crushing, milling, flotation, grinding and other operations in coal, metallurgy, mining, electric power, building materials, refractory materials, energy and other industrial industries. The wear-resistant rod impacts and grinds the material to be ground in the rod mill, and the abrasive has the effect of cutting and chiseling the surface of the wear-resistant rod. Therefore, the wear-resistant rod is the most important wear part in the rod mill. The annual domestic demand The volume is more than 100,000 tons. At present, the wear-resistant rod materials used in various industries mainly include several single metal materials such as high manganese steel, multi-element low alloy steel, and carbon steel...

AI Technical Summary

Problems solved by technology

Only under high load and high impact stress, the high manganese steel can realize the solid phase transformation from austenite to martensite and work hardening can give full play to its wear resistance, and the yield strength is low, and it is easy to produce plastic rheology. In the mill, the grinding rods impact each other indirectly through the abrasive accumulation layer, the impact strength is small, and the work hardening effect is not significant, so the wear resistance cannot reach the ideal value; the macroscopic hardness of multi-element low alloy steel is about HRC40, due to the low hardness , can not resist the pressing and scratching of abrasives, and a large number of cutting and plastic changes occur on the surface during use. Low cycle fatigue, so the wear resistance is not good; the hardness and toughness of carbon steel are not good at both, it is difficult to be competent for wear-resistant rods Thin, long and wear-resistant requirements

In recent years, according to the specific working conditions and resource conditions of wear-resistant rods, domestic and foreign researches have mainly been carried out on chemical composition re-alloying, heat treatment technology, smelting and pouring technology, etc., and a variety of wear-resistant materials have been developed, mainly modified high-strength Manganese steel, medium manganese steel, ultra-high manganese steel series, high, medium and low carbon wear-resistant alloy steel series, but due to the mechanical and mechanical properties of a single material in terms of strength, hardness, plastic toughness, etc. Requirements, so the service life is still very short or it is difficult to meet the needs of various working conditions

In addition, the alloy wear-resistant rods mentioned above will consume a large amount of non-ferrous metals such as manganese, chromium, nickel, copper, etc., resulting in a reduction in national strategic resource reserves.

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