Tough high-chrome abrasion-resistant cast ball and preparation method thereof

A wear-resistant casting ball, strong and tough technology, applied in the field of wear-resistant metal materials, can solve the problems of reduced hardness and wear resistance, high tempering temperature, etc., to achieve low cost, lower tempering temperature, and strong process adaptability Effect

Inactive Publication Date: 2016-03-16
ANHUI NINGGUO NINGHU STEEL BALL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure its low cracking tendency, a higher tempering temperature is often required, followed by a decrease in hardness and wear resistance

Method used

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  • Tough high-chrome abrasion-resistant cast ball and preparation method thereof
  • Tough high-chrome abrasion-resistant cast ball and preparation method thereof
  • Tough high-chrome abrasion-resistant cast ball and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A tough high chromium wear-resistant casting ball proposed by the present invention, its components include: C: 2wt%, Cr: 12wt%, Si: 0.4wt%, Mn: 0.7wt%, Nd: 0.5wt% %, Si: 2.5wt%, Ti: 0.5wt%, and the rest are Fe and unavoidable impurities.

[0028] The preparation method of the above-mentioned strong and tough high-chromium wear-resistant casting ball proposed by the present invention includes: melting the raw materials in an intermediate frequency induction furnace to obtain alloy liquid evenly, and the melting temperature is 1600°C; feeding the alloy liquid obtained by melting into a mold Casting at constant temperature, the casting temperature is 1400°C, cooling, and demoulding to obtain cast ball billets; heat the cast ball billets obtained from casting to 980°C, keep them warm for 2 hours, send them to the quenching medium to cool, take them out and clean them to obtain quenched ball billets; The quenched ball billet obtained by quenching is sent into the furnace fo...

Embodiment 2

[0030] A kind of strong and tough high chromium wear-resistant casting ball proposed by the present invention, its components include by weight percentage: C: 2.2wt%, Cr: 10wt%, Si: 0.6wt%, Mn: 0.5wt%, Nd: 2wt% %, Si: 1wt%, Ti: 2wt%, and the rest are Fe and unavoidable impurities.

[0031] The preparation method of the above-mentioned strong and tough high-chromium wear-resistant casting ball proposed by the present invention includes: melting the raw materials in an intermediate frequency induction furnace to obtain alloy liquid evenly, and the melting temperature is 1550°C; feeding the alloy liquid obtained by melting into a mold Casting at constant temperature, the casting temperature is 1450°C, cooling, demoulding to obtain the cast ball billet; the cast ball billet obtained by casting is heated to 920°C, kept for 4 hours, sent to the quenching medium to cool, taken out and cleaned to obtain the quenched ball billet; The quenched ball billet obtained by quenching is sent i...

Embodiment 3

[0033] A strong and tough high chromium wear-resistant casting ball proposed by the present invention, its components include: C: 2.05wt%, Cr: 11.5wt%, Si: 0.45wt%, Mn: 0.65wt%, Nd: 1wt%, Si: 2wt%, Ti: 0.8wt%, the rest is Fe and unavoidable impurities.

[0034] The preparation method of the above-mentioned strong and tough high-chromium wear-resistant casting ball proposed by the present invention includes: melting the raw materials in an intermediate frequency induction furnace to obtain alloy liquid evenly, and the melting temperature is 1580°C; feeding the alloy liquid obtained by melting into a mold Casting at constant temperature, the casting temperature is 1420°C, cooling, demoulding to obtain cast ball billet; heat the cast ball billet obtained from casting to 960°C, keep it warm for 2.5h, send it to the quenching medium for cooling, take it out and clean it to obtain quenched ball billet; Put the quenched ball billet obtained by quenching into the furnace for tempering...

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Abstract

The invention discloses a tough high-chrome abrasion-resistant cast ball. The tough high-chrome abrasion-resistant cast ball comprises, by weight, 2%-2.2% of C, 10%-12% of Cr, 0.4%-0.6% of Si, 0.5%-0.7% of Mn, 0.5%-2% of Nd, 1%-2.5% of Si, 0.5%-2% of Ti and the balance Fe and inevitable impurities. The invention further discloses a preparation method of the tough high-chrome abrasion-resistant cast ball. The preparation method of the tough high-chrome abrasion-resistant cast ball comprises the steps of smelting, casting and heat treatment. According to the tough high-chrome abrasion-resistant cast ball and the preparation method thereof, a micro amount of Nd, a micro amount of Si and a micro amount of Ti are added based on a conventional high-chrome cast ball, so that on the basis that the high hardness and high abrasion resistance of the high-chrome cast ball are guaranteed, the lower quenching tendency and the lower cracking tendency are achieved in the use process, the preparation technique is simple, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of wear-resistant metal materials, in particular to a tough high-chromium wear-resistant cast ball and a preparation method thereof. Background technique [0002] As the main equipment for grinding materials in mines and cement industry, ball mill has been widely used. The grinding body is an important consumable material for the operation of the ball mill, and its performance is directly related to the output and operating efficiency of the ball mill. [0003] High chromium cast iron is a kind of anti-wear material with excellent performance and which is paid special attention to. Compared with alloy steel, it has higher wear resistance, higher toughness and strength than ordinary white cast iron, and also has good high temperature resistance and corrosion resistance. High chromium cast iron has simple process and moderate cost, and is one of the most widely used wear-resistant materials at home and abroad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C37/06C22C33/08C21D1/18C21D5/00C21D9/36
CPCC22C37/10C21D1/18C21D5/00C21D9/36C22C33/08C22C37/06
Inventor 徐光青郑治祥吕珺汪冬梅
Owner ANHUI NINGGUO NINGHU STEEL BALL
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