阅读说明：本技术 一种高硬度耐磨耐腐蚀钢球及其制备方法 (High-hardness wear-resistant corrosion-resistant steel ball and preparation method thereof ) 是由 张田翔 于 2020-06-16 设计创作，主要内容包括：本发明涉及钢球技术领域,且公开了一种高硬度耐磨耐腐蚀钢球,包括铁50-70份、碳10-30份、铬20-40份、锰10-20份、硫3-7份、磷4-8份、钼5-10份、硅15-24份、钨10-18份,钛8-16份、镍6-14份、铜5-13份、铍4-8份和铌3-10份。该高硬度耐磨耐腐蚀钢球及其制备方法,通过铬与碳、锰等的元素相互配合,将其融化后浇筑成钢球,增加了钢球的硬度、强度和耐腐蚀性,再通过将钢球进行热处理,改善钢球的内在质量,使其性能更高,淬火再回火使球具有一定的渗碳层及硬度,韧性和压碎负荷,再通过研磨与清洗,进一步改善钢球的球形误差与减少表面粗糙度,提高了钢球的表面质量与耐腐蚀性,使其实用性较高。(The invention relates to the technical field of steel balls and discloses a high-hardness wear-resistant corrosion-resistant steel ball which comprises 50-70 parts of iron, 10-30 parts of carbon, 20-40 parts of chromium, 10-20 parts of manganese, 3-7 parts of sulfur, 4-8 parts of phosphorus, 5-10 parts of molybdenum, 15-24 parts of silicon, 10-18 parts of tungsten, 8-16 parts of titanium, 6-14 parts of nickel, 5-13 parts of copper, 4-8 parts of beryllium and 3-10 parts of niobium. The high-hardness wear-resistant corrosion-resistant steel ball and the preparation method thereof are characterized in that elements such as chromium, carbon, manganese and the like are matched with each other, the elements are melted and poured into the steel ball, the hardness, the strength and the corrosion resistance of the steel ball are increased, then the steel ball is subjected to heat treatment, the internal quality of the steel ball is improved, the performance of the steel ball is higher, the steel ball is quenched and tempered to enable the steel ball to have a certain carburized layer and hardness, toughness and crushing load, and then grinding and cleaning are carried out, so that the spherical error and the surface roughness of the steel ball are further improved, the surface quality and the corrosion resistance of the steel ball are improved, and the practicability.)

1. A high-hardness wear-resistant corrosion-resistant steel ball is characterized in that; the alloy comprises 50-70 parts of iron, 10-30 parts of carbon, 20-40 parts of chromium, 10-20 parts of manganese, 3-7 parts of sulfur, 4-8 parts of phosphorus, 5-10 parts of molybdenum, 15-24 parts of silicon, 10-18 parts of tungsten, 8-16 parts of titanium, 6-14 parts of nickel, 5-13 parts of copper, 4-8 parts of beryllium and 3-10 parts of niobium.

2. A preparation method of a high-hardness wear-resistant corrosion-resistant steel ball comprises the following steps:

s1, sequentially adding iron, carbon, chromium, manganese, molybdenum, silicon, tungsten, titanium, nickel, copper, beryllium and niobium into a smelting furnace for heating and melting;

s2 and S1, after the raw materials are completely melted, adding sulfur and phosphorus, and keeping the temperature to continuously melt for 2-3 h;

s3, pouring the melted raw material S2 on a mold to obtain a spherical embryo;

s4, annealing the spherical embryo, and then performing pressurized filing to form a spherical steel ball with a proper spherical diameter;

s5, polishing the surface of the spherical steel ball, and removing the tooth marks of the file teeth left after filing processing;

s6, carrying out heat treatment on the polished steel ball, heating the steel ball to 600-800 ℃, then preserving heat for 40-50min, and then carrying out water quenching to room temperature;

s7, tempering the steel ball, heating the steel ball to 400 ℃ below zero, and slowly cooling the steel ball to room temperature after tempering;

s8, putting the tempered steel ball into a grinder for grinding, and removing a black oxide layer on the surface of the steel ball;

and S9, pouring the steel ball into the polishing roller to rotate, and adding water into the polishing cleaning agent to clean and brighten the spherical surface, thereby completing the manufacturing of the steel ball.

3. The method for preparing the high-hardness wear-resistant corrosion-resistant steel ball according to claim 2, wherein the method comprises the following steps: the temperature of the smelting furnace in S1 is 1200-1400 ℃.

4. The method for preparing the high-hardness wear-resistant corrosion-resistant steel ball according to claim 2, wherein the method comprises the following steps: and S3 naturally cooling the spherical embryo obtained by pouring to room temperature.

5. The method for preparing the high-hardness wear-resistant corrosion-resistant steel ball according to claim 2, wherein the method comprises the following steps: the tempering time in the S7 is 1-2 h.

6. The method for preparing the high-hardness wear-resistant corrosion-resistant steel ball according to claim 2, wherein the method comprises the following steps: the annealing time of the spherical embryo in S4 is 2-4 h.

7. The method for preparing the high-hardness wear-resistant corrosion-resistant steel ball according to claim 2, wherein the method comprises the following steps: in S3, spherical embryos with incomplete size or large diameter are selected.

Technical Field

The invention relates to the technical field of steel balls, in particular to a high-hardness wear-resistant corrosion-resistant steel ball and a preparation method thereof.

Background

The steel ball is divided into grinding, forging and casting according to the production and processing technology. The steel is divided into bearing steel balls, stainless steel balls, carbon steel balls, copper bearing steel balls, alloy balls and the like according to processing materials. The bearing steel ball is an important industrial basic part, and the alloy steel ball is a spherical ferroalloy wear-resistant body which is generated by using carbon, chromium, manganese, molybdenum and the like as main added metal elements and through forging, spinning, rolling, casting and other modes, and is the most important component part of the prior ball for crushing industrial mines, cement and the like.

However, the steel balls produced by the traditional manufacturing process have the problems of low hardness, poor wear resistance and high possibility of corrosion, so that the traditional alloy steel ball manufacturing process needs to be improved, and a high-hardness wear-resistant corrosion-resistant steel ball and a preparation method thereof are provided.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the high-hardness wear-resistant corrosion-resistant steel ball and the preparation method thereof, which have the advantages of high hardness, wear resistance, corrosion resistance and the like, and solve the problems of low hardness, poor wear resistance and easiness in corrosion of the steel ball.

(II) technical scheme

In order to achieve the purpose that the steel ball has high hardness, wear resistance and corrosion resistance, the invention provides the following technical scheme: a high-hardness wear-resistant corrosion-resistant steel ball comprises 50-70 parts of iron, 10-30 parts of carbon, 20-40 parts of chromium, 10-20 parts of manganese, 3-7 parts of sulfur, 4-8 parts of phosphorus, 5-10 parts of molybdenum, 15-24 parts of silicon, 10-18 parts of tungsten, 8-16 parts of titanium, 6-14 parts of nickel, 5-13 parts of copper, 4-8 parts of beryllium and 3-10 parts of niobium.

A preparation method of a high-hardness wear-resistant corrosion-resistant steel ball comprises the following steps:

s1, sequentially adding iron, carbon, chromium, manganese, molybdenum, silicon, tungsten, titanium, nickel, copper, beryllium and niobium into a smelting furnace for heating and melting,

s2 and S1, adding sulfur and phosphorus after the raw materials are completely melted, keeping the temperature to continue melting for 2 to 3 hours,

s3, pouring the melted raw material S2 on a mould to obtain a spherical embryo,

s4, annealing the spherical embryo, pressurizing and filing the spherical embryo into a spherical steel ball with a proper spherical diameter,

s5, grinding the surface of the spherical steel ball, removing the tooth marks of the file tooth left after filing processing,

s6, carrying out heat treatment on the polished steel ball, heating the steel ball to 600-800 ℃, then preserving heat for 40-50min, then carrying out water quenching to room temperature,

s7, tempering the steel ball, heating the steel ball to 400 ℃ at 300-,

s8, putting the tempered steel ball into a grinder for grinding, removing a black oxide layer on the surface of the steel ball,

and S9, pouring the steel ball into the polishing roller to rotate, and adding water into the polishing cleaning agent to clean and brighten the spherical surface, thereby completing the manufacturing of the steel ball.

Preferably, the temperature of the smelting furnace in S1 is 1200-1400 ℃.

Preferably, the spherical embryo obtained by casting in S3 is naturally cooled to room temperature.

Preferably, the tempering time in S7 is 1-2 h.

Preferably, the annealing time of the globular embryo in S4 is 2-4 h.

Preferably, in S3, an incomplete or large diameter globular embryo is selected.

Compared with the prior art, the invention provides a high-hardness wear-resistant corrosion-resistant steel ball and a preparation method thereof, and the steel ball has the following beneficial effects:

1. the high-hardness wear-resistant corrosion-resistant steel ball and the preparation method thereof are characterized in that elements such as chromium, carbon, manganese and the like are matched with each other, the elements are melted and poured into the steel ball, the hardness, the strength and the corrosion resistance of the steel ball are increased, then the steel ball is subjected to heat treatment, the internal quality of the steel ball is improved, the performance of the steel ball is higher, the steel ball is quenched and tempered to enable the steel ball to have a certain carburized layer and hardness, toughness and crushing load, and then grinding and cleaning are carried out, so that the spherical error and the surface roughness of the steel ball are further improved, the surface quality and the corrosion resistance of the steel ball are improved, and the practicability.

Detailed Description