CN104561761A - High-chromium wear resistant steel ball - Google Patents

High-chromium wear resistant steel ball Download PDF

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Publication number
CN104561761A
CN104561761A CN201410853592.1A CN201410853592A CN104561761A CN 104561761 A CN104561761 A CN 104561761A CN 201410853592 A CN201410853592 A CN 201410853592A CN 104561761 A CN104561761 A CN 104561761A
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steel ball
resistant steel
chromium
chromium wear
obtains
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CN201410853592.1A
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CN104561761B (en
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范德林
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Tongling Sansheng Electronic Co., Ltd.
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NINGGUO SHUANGLIN INDUSTRY AND TRADE Co Ltd
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Abstract

The invention discloses a high-chromium wear resistant steel ball which comprises the following components in percentage by mass: 2.2-2.4% of C, 10-13% of Cr, 0.3-0.4% of Mn, 0.3-0.4% of Si, 0-0.15% of P, 0-0.15% of S, 0.7-0.8% of W, 0.04-0.05% of Ti, 0.01-0.02% of Ni, 0.20-0.24% of Al, 0.16-0.22% of Mo and the balance of Fe. A preparation process for preparing the high-chromium wear resistant steel ball according to the ratio of the components comprises the following steps: S1, smelting and casting: adopting scrap steel, chromium steel, manganese steel, molybdenum, tungsten, nickel and titanium as raw materials, smelting, adjusting the components to meet the range, discharging at the temperature of 1600-1700 DEG C and casting to obtain a casting, and performing air cooling; S2: performing heat treatment so as to obtain a wear resistant part green body; S3, performing surface treatment: polishing the surface of the green body obtained in the S2 so as to obtain the high-chromium wear resistant steel ball.

Description

A kind of high-chromium wear-resistant steel ball
Technical field
The invention belongs to wear-proof technique field, particularly relate to a kind of high-chromium wear-resistant steel ball.
Background technology
Ball mill is one of widely used Super-fine grinder machinery in industrial production.Wearing piece is ball mill equipment grinding material medium, and producing mill stripping effect by collision friction between wearing piece, between wearing piece and material, is important base parts and components, and it is widely used in the production process in mine, cement mill and power station.In prior art, wearing piece also cannot meet performance requirement completely, and wear resisting property and the work-ing life of how to improve raising wearing piece are the technical problems that those skilled in the art need solution badly.
Summary of the invention
Described in background technology, the invention provides a kind of high-chromium wear-resistant steel ball, its wear resisting property and corrosion resistance and good, long service life.
A kind of high-chromium wear-resistant steel ball that the present invention proposes, comprises the component of following massfraction: C:2.2-2.4%; Cr:10-13%; Mn:0.3-0.4%; Si:0.3-0.4%; P:0-0.15%; S:0-0.15%; W:0.7-0.8%; Ti:0.04-0.05%; Ni:0.01-0.02%; Al:0.20-0.24%; Mo:0.16-0.22%; Surplus is Fe;
In preparation process, according to the proportioning of above-mentioned each component, prepare described high-chromium wear-resistant steel ball according to the following steps:
S1: melting and casting: adopt steel scrap, chromium steel, manganese steel, molybdenum, tungsten, nickel, titanium to be raw material, melting, adjusting component meets above-mentioned scope, tapping casting, and tapping temperature is 1600-1700 DEG C, obtains foundry goods, air cooling;
S2: thermal treatment: the foundry goods obtained in S1 is put into holding furnace at 860-880 DEG C of insulation 2-3 hour, water-cooled, move at 220-230 DEG C in tempering stove, carry out tempering 1-2 hour, immigration burial pit progressively cools to room temperature, obtains wearing piece base substrate;
S3: surface treatment: the billet surface obtained in S2 polished, obtains high-chromium wear-resistant steel ball.
Preferably, the component of following massfraction is comprised: C:2.23-2.36%; Cr:11-13%; Mn:0.34-0.38%; Si:0.31-0.36%; P:0-0.15%; S:0-0.15%; W:0.72-0.77%; Ti:0.04-0.05%; Ni:0.01-0.02%; Al:0.20-0.24%; Mo:0.16-0.22%; Surplus is Fe.
Preferably, the component of following massfraction is comprised: C:2.3%; Cr:12%; Mn:0.36%; Si:0.34%; P:0-0.15%; S:0-0.15%; W:0.75%; Ti:0.045%; Ni:0.013%; Al:0.22%; Mo:0.20%; Surplus is Fe.
Preferably, in preparation process, according to the proportioning of above-mentioned each component, prepare described high-chromium wear-resistant steel ball according to the following steps:
S1: melting and casting: adopt steel scrap, chromium steel, manganese steel, molybdenum, tungsten, nickel, titanium to be raw material, melting, adjusting component meets above-mentioned scope, tapping casting, and tapping temperature is 1680 DEG C, obtains foundry goods, air cooling;
S2: thermal treatment: the foundry goods obtained in S1 is put into holding furnace 870 DEG C of insulations 2.6 hours, water-cooled, move at 224 DEG C in tempering stove, carry out tempering 1.8 hours, immigration burial pit progressively cools to room temperature, obtains wearing piece base substrate;
S3: surface treatment: the billet surface obtained in S2 polished, obtains high-chromium wear-resistant steel ball.
In the present invention, by carrying out choose reasonable to the component of high-chromium wear-resistant steel ball, and adopt proper step to be prepared, the components matching of wearing piece and preparation technology are considered, and the content of control P, S two kinds of impurity, simultaneously when in steel ball, chrome content reaches certain proportion, oxygen effect in chromium and corrosive medium, the very thin oxide film of one deck (self-passivation film) is formed at steel ball surface, the matrix of steel ball can be stoped to corrode further, improve wear resisting property and the corrosion resistance nature of wearing piece, extend work-ing life.
Embodiment
Below in conjunction with specific examples, the present invention is described in detail; should understand; embodiment is only for illustration of the present invention, instead of for limiting the present invention, any amendment, equivalent replacement etc. made on basis of the present invention is all in protection scope of the present invention.
Embodiment 1
A kind of high-chromium wear-resistant steel ball, comprises the component of following massfraction: C:2.3%; Cr:12%; Mn:0.36%; Si:0.34%; P:0.15%; S:0.15%; W:0.75%; Ti:0.045%; Ni:0.013%; Al:0.22%; Mo:0.20%; Surplus is Fe;
In preparation process, according to the proportioning of above-mentioned each component, prepare described high-chromium wear-resistant steel ball according to the following steps:
S1: melting and casting: adopt steel scrap, chromium steel, manganese steel, molybdenum, tungsten, nickel, titanium to be raw material, melting, adjusting component meets above-mentioned scope, tapping casting, and tapping temperature is 1680 DEG C, obtains foundry goods, air cooling;
S2: thermal treatment: the foundry goods obtained in S1 is put into holding furnace 870 DEG C of insulations 2.6 hours, water-cooled, move at 224 DEG C in tempering stove, carry out tempering 1.8 hours, immigration burial pit progressively cools to room temperature, obtains wearing piece base substrate;
S3: surface treatment: the billet surface obtained in S2 polished, obtains high-chromium wear-resistant steel ball.
Embodiment 2
A kind of high-chromium wear-resistant steel ball, comprises the component of following massfraction: C:2.4%; Cr:10%; Mn:0.4%; Si:0.3%; P:0.15%; S:0.15%; W:0.8%; Ti:0.04%; Ni:0.02%; Al:0.20%; Mo:0.22%; Surplus is Fe;
In preparation process, according to the proportioning of above-mentioned each component, prepare described high-chromium wear-resistant steel ball according to the following steps:
S1: melting and casting: adopt steel scrap, chromium steel, manganese steel, molybdenum, tungsten, nickel, titanium to be raw material, melting, adjusting component meets above-mentioned scope, tapping casting, and tapping temperature is 1600 DEG C, obtains foundry goods, air cooling;
S2: thermal treatment: the foundry goods obtained in S1 is put into holding furnace 880 DEG C of insulations 2 hours, water-cooled, move at 230 DEG C in tempering stove, carry out tempering 1 hour, immigration burial pit progressively cools to room temperature, obtains wearing piece base substrate;
S3: surface treatment: the billet surface obtained in S2 polished, obtains high-chromium wear-resistant steel ball.
Embodiment 3
A kind of high-chromium wear-resistant steel ball, comprises the component of following massfraction: C:2.2%; Cr:13%; Mn:0.3%; Si:0.4%; P:0.15%; S:0.15%; W:0.7%; Ti:0.05%; Ni:0.01%; Al:0.24%; Mo:0.16%; Surplus is Fe;
In preparation process, according to the proportioning of above-mentioned each component, prepare described high-chromium wear-resistant steel ball according to the following steps:
S1: melting and casting: adopt steel scrap, chromium steel, manganese steel, molybdenum, tungsten, nickel, titanium to be raw material, melting, adjusting component meets above-mentioned scope, tapping casting, and tapping temperature is 1700 DEG C, obtains foundry goods, air cooling;
S2: thermal treatment: the foundry goods obtained in S1 is put into holding furnace 860 DEG C of insulations 3 hours, water-cooled, move at 220 DEG C in tempering stove, carry out tempering 2 hours, immigration burial pit progressively cools to room temperature, obtains wearing piece base substrate;
S3: surface treatment: the billet surface obtained in S2 polished, obtains high-chromium wear-resistant steel ball.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.

Claims (4)

1. a high-chromium wear-resistant steel ball, is characterized in that, comprises the component of following massfraction: C:2.2-2.4%; Cr:10-13%; Mn:0.3-0.4%; Si:0.3-0.4%; P:0-0.15%; S:0-0.15%; W:0.7-0.8%; Ti:0.04-0.05%; Ni:0.01-0.02%; Al:0.20-0.24%; Mo:0.16-0.22%; Surplus is Fe;
In preparation process, according to the proportioning of above-mentioned each component, prepare described high-chromium wear-resistant steel ball according to the following steps:
S1: melting and casting: adopt steel scrap, chromium steel, manganese steel, molybdenum, tungsten, nickel, titanium to be raw material, melting, adjusting component meets above-mentioned scope, tapping casting, and tapping temperature is 1600-1700 DEG C, obtains foundry goods, air cooling;
S2: thermal treatment: the foundry goods obtained in S1 is put into holding furnace at 860-880 DEG C of insulation 2-3 hour, water-cooled, move at 220-230 DEG C in tempering stove, carry out tempering 1-2 hour, immigration burial pit progressively cools to room temperature, obtains wearing piece base substrate;
S3: surface treatment: the billet surface obtained in S2 polished, obtains high-chromium wear-resistant steel ball.
2. high-chromium wear-resistant steel ball according to claim 1, is characterized in that, comprises the component of following massfraction: C:2.23-2.36%; Cr:11-13%; Mn:0.34-0.38%; Si:0.31-0.36%; P:0-0.15%; S:0-0.15%; W:0.72-0.77%; Ti:0.04-0.05%; Ni:0.01-0.02%; Al:0.20-0.24%; Mo:0.16-0.22%; Surplus is Fe.
3. high-chromium wear-resistant steel ball according to claim 2, is characterized in that, comprises the component of following massfraction: C:2.3%; Cr:12%; Mn:0.36%; Si:0.34%; P:0-0.15%; S:0-0.15%; W:0.75%; Ti:0.045%; Ni:0.013%; Al:0.22%; Mo:0.20%; Surplus is Fe.
4. the high-chromium wear-resistant steel ball according to any one of claim 1-3, is characterized in that, in preparation process, according to the proportioning of above-mentioned each component, prepares described high-chromium wear-resistant steel ball according to the following steps:
S1: melting and casting: adopt steel scrap, chromium steel, manganese steel, molybdenum, tungsten, nickel, titanium to be raw material, melting, adjusting component meets above-mentioned scope, tapping casting, and tapping temperature is 1680 DEG C, obtains foundry goods, air cooling;
S2: thermal treatment: the foundry goods obtained in S1 is put into holding furnace 870 DEG C of insulations 2.6 hours, water-cooled, move at 224 DEG C in tempering stove, carry out tempering 1.8 hours, immigration burial pit progressively cools to room temperature, obtains wearing piece base substrate;
S3: surface treatment: the billet surface obtained in S2 polished, obtains high-chromium wear-resistant steel ball.
CN201410853592.1A 2014-12-31 2014-12-31 A kind of high-chromium wear-resistant steel ball Active CN104561761B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103710613A (en) * 2013-09-25 2014-04-09 宁国市正兴耐磨材料有限公司 High chromium alloy wear-resistance steel ball
CN104109798A (en) * 2014-08-01 2014-10-22 宁国市南方耐磨材料有限公司 High-Cr abrasion-resistant cast iron steel ball

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103710613A (en) * 2013-09-25 2014-04-09 宁国市正兴耐磨材料有限公司 High chromium alloy wear-resistance steel ball
CN104109798A (en) * 2014-08-01 2014-10-22 宁国市南方耐磨材料有限公司 High-Cr abrasion-resistant cast iron steel ball

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