CN104109798A - High-Cr abrasion-resistant cast iron steel ball - Google Patents

High-Cr abrasion-resistant cast iron steel ball Download PDF

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Publication number
CN104109798A
CN104109798A CN201410377339.3A CN201410377339A CN104109798A CN 104109798 A CN104109798 A CN 104109798A CN 201410377339 A CN201410377339 A CN 201410377339A CN 104109798 A CN104109798 A CN 104109798A
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CN
China
Prior art keywords
steel ball
abrasion
cast iron
proof
foundry goods
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Pending
Application number
CN201410377339.3A
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Chinese (zh)
Inventor
熊夏鸣
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NINGGUO SOUTHERN WEAR-RESISTANT MATERIALS Co Ltd
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NINGGUO SOUTHERN WEAR-RESISTANT MATERIALS Co Ltd
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Priority to CN201410377339.3A priority Critical patent/CN104109798A/en
Publication of CN104109798A publication Critical patent/CN104109798A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a high-Cr abrasion-resistant cast iron steel ball. The steel ball comprises the following components by weight percent: 2.6% to 2.8% of C, 0.8% to 1.2% of Si, 18% to 20% of Cr, 2.3% to 2.5% of Mn, 0.02% to 0.05% of V, 0.02% to 0.03% of Ti, 0.2% to 0.4% of Al, 0.005% to 0.01% of B, 0.15% to 0.25% of Mo, 0% to 0.02% of S, 0% to 0.06% of P and the balance of Fe. According to the component proportion, the high-Cr abrasion-resistant cast iron steel ball is prepared by carrying out the following process steps: S1, weighing raw materials according to the weight percent of the components and smelting so as to obtain molten iron, deoxidizing, pouring, casting for shaping and then clearing so as to obtain a casting; and S2, carrying out heat preservation on the casting obtained in the step S1 at 930 DEG C to 940 DEG C for 2 to 3 hours, then carrying out water quenching, heating the quenched casting to 230 DEG C to 240 DEG C and tempering, carrying out heat preservation for 1 to 2 hours, moving into a slow cooling pit for slow cooling and cooling to a room temperature so as to obtain the abrasion-resistant steel ball product.

Description

A kind of high-chromium abrasion-proof cast iron steel ball
Technical field
The present invention relates to grinding machinery technical field, relate in particular to a kind of high-chromium abrasion-proof cast iron steel ball.
Background technology
High-chromium abrasion-proof cast iron steel ball is the first high-abrasive material expendable part of pulverizing industry, and annual domestic only Mineral Processing Industry just need to consume the steel ball of approximately 2,000,000 tons of various materials, and China's Cement industry also needs to consume 200,000 tons every year.Abrasion-proof steel ball is the important base parts and components of ball mill, and especially accurate industrial ball plays great function in the national economic development, and it is widely used in cement mill, power station etc.
High-chromium abrasion-proof cast iron steel ball is in operation process, working conditions is very complicated, in the time that movement parts runs up, between steel ball and its bracing or strutting arrangement, be mainly to put or line contacts, bearing concentrated periodic repeated load, its STRESS VARIATION can be by zero to maximum, then by being up to zero, contact area is less, and the stress bearing is just larger.Simultaneously steel ball also to bear the load that causes due to centrifugal force and and its bracing or strutting arrangement between the recoverable deformation that produces.In addition, steel ball is also subject to the corrosion of lubricated other impurity of wet goods in working process, therefore the over-all properties of abrasion-proof steel ball is had to higher requirement.In prior art, there is hardening capacity and toughness deficiency in high-chromium abrasion-proof cast iron steel ball conventionally, causes its wear resistance can not meet grinding requirement, in order to improve wear resistance, adopts multiple precious metal element to add, and its cost is too high again, need to improve.
Summary of the invention
In order to solve the technical problem existing in background technology, the present invention proposes a kind of high-chromium abrasion-proof cast iron steel ball, it has advantages of high abrasion, high work-ing life.
A kind of high-chromium abrasion-proof cast iron steel ball that the present invention proposes, the weight percentage of its each component is as follows:
C:2.6%-2.8%; Si:0.8%-1.2%; Cr:18%-20%; Mn:2.3%-2.5%; V:0.02%-0.05%; Ti:0.02%-0.03%; Al:0.2%-0.4%; B:0.005%-0.01%; Mo:0.15%-0.25%; S:0-0.02%; P:0-0.06%; Clout is Fe;
According to above-mentioned each component proportion, prepare described high-chromium abrasion-proof cast iron steel ball according to following processing step:
S1: take raw material by each component weight percentage and carry out melting, obtain molten iron, deoxidation, cast, after casting, cleaning, obtains foundry goods;
S2: the foundry goods obtaining in S1, at 930-940 DEG C, is incubated to 2-3 hour, and then shrend, is warming up to 230-240 DEG C by the foundry goods after quenching and carries out temper, is incubated after 1-2 hour, moves into burial pit Slow cooling to room temperature, obtains abrasion-proof steel ball finished product.
In technique scheme, in the C of high level, Cr elemental basis, add appropriate Mn and micro-B, improve the hardenability of material; Compound interpolation V and Ti, can crystal grain thinning, purify crystal boundary, improves form, size, quantity and the distribution of carbide, suppresses the grain coarsening impact that Mn element brings, and can improve the mobility of molten iron in fusion-casting process simultaneously, improves technology controlling and process; The compound interpolation of Al and Mo, can strengthen deoxidation effect, thereby improves the antioxidant property of steel ball; Control the content of S and P, the excessive deterioration that can improve the over-all properties of steel ball; According to alloying optimum result, rationally set heat treated temperature and time, make steel ball realize the combination of good hardness and toughness, thereby obtain high abrasion, the advantage in high work-ing life.
Preferably, the weight percentage of its each component is as follows:
C:2.65%-2.75%; Si:0.9%-1.05%; Cr:18.5%-19.5%; Mn:2.35%-2.45%; V:0.03%-0.04%; Ti:0.022%-0.028%; Al:0.25%-0.35%; B:0.006%-0.008%; Mo:0.18%-0.22%; S:0-0.01%; P:0-0.03%; Clout is Fe.
Preferably, the weight percentage of its each component is as follows:
C:2.7%; Si:1.0%; Cr:19%; Mn:2.4%; V:0.035%; Ti:0.025%; Al:0.3%; B:0.007%; Mo:0.2%; S:0.004%; P:0.02%; Clout is Fe.
Preferably, in step S2, by the foundry goods obtaining in S1 at 933-937 DEG C, be incubated 2.5 hours, then shrend, is warming up to 232-238 DEG C by the foundry goods after quenching and carries out temper, be incubated after 1.5 hours, move into burial pit Slow cooling to room temperature, obtain abrasion-proof steel ball finished product.
Preferably, in step S2, the foundry goods obtaining in S1, at 935 DEG C, is incubated to 2.5 hours, then shrend, is warming up to 235 DEG C by the foundry goods after quenching and carries out temper, is incubated after 1.5 hours, moves into burial pit Slow cooling to room temperature, obtains abrasion-proof steel ball finished product.
In the present invention, be optimized by the Composition Design to steel ball and preparation technology, improved the over-all properties of high-chromium abrasion-proof cast iron steel ball, and make steel ball there is high abrasion, high work-ing life.
Embodiment
Below in conjunction with specific examples, the present invention is described in detail; should understand; embodiment is only for the present invention is described, instead of for the present invention is limited, and any amendment of making on basis of the present invention, is equal to replacement etc. all in protection scope of the present invention.
Embodiment 1
A kind of high-chromium abrasion-proof cast iron steel ball, the weight percentage of its each component is as follows:
C:2.7%; Si:1.0%; Cr:19%; Mn:2.4%; V:0.035%; Ti:0.025%; Al:0.3%; B:0.007%; Mo:0.2%; S:0.004%; P:0.02%; Clout is Fe;
According to above-mentioned each component proportion, prepare described high-chromium abrasion-proof cast iron steel ball according to following processing step:
S1: take raw material by each component weight percentage and carry out melting, obtain molten iron, deoxidation, cast, after casting, cleaning, obtains foundry goods;
S2: the foundry goods obtaining in S1, at 935 DEG C, is incubated to 2.5 hours, and then shrend, is warming up to 235 DEG C by the foundry goods after quenching and carries out temper, is incubated after 1.5 hours, moves into burial pit Slow cooling to room temperature, obtains abrasion-proof steel ball finished product.
Embodiment 2
A kind of high-chromium abrasion-proof cast iron steel ball, the weight percentage of its each component is as follows:
C:2.6%; Si:0.8%; Cr:18%; Mn:2.3%; V:0.02%; Ti:0.02%; Al:0.2%; B:0.005%; Mo:0.15%; S:0.003%; P:0.01%; Clout is Fe;
According to above-mentioned each component proportion, prepare described high-chromium abrasion-proof cast iron steel ball according to following processing step:
S1: take raw material by each component weight percentage and carry out melting, obtain molten iron, deoxidation, cast, after casting, cleaning, obtains foundry goods;
S2: the foundry goods obtaining in S1, at 930 DEG C, is incubated to 3 hours, and then shrend, is warming up to 240 DEG C by the foundry goods after quenching and carries out temper, is incubated after 1 hour, moves into burial pit Slow cooling to room temperature, obtains abrasion-proof steel ball finished product.
Embodiment 3
A kind of high-chromium abrasion-proof cast iron steel ball, the weight percentage of its each component is as follows:
C:2.8%; Si:1.2%; Cr:20%; Mn:2.5%; V:0.05%; Ti:0.03%; Al:0.4%; B:0.01%; Mo:0.25%; S:0.02%; P:0.06%; Clout is Fe;
According to above-mentioned each component proportion, prepare described high-chromium abrasion-proof cast iron steel ball according to following processing step:
S1: take raw material by each component weight percentage and carry out melting, obtain molten iron, deoxidation, cast, after casting, cleaning, obtains foundry goods;
S2: the foundry goods obtaining in S1, at 940 DEG C, is incubated to 2 hours, and then shrend, is warming up to 230 DEG C by the foundry goods after quenching and carries out temper, is incubated after 2 hours, moves into burial pit Slow cooling to room temperature, obtains abrasion-proof steel ball finished product.
In the above-described embodiments, be optimized by the Composition Design to steel ball and preparation technology, improved the over-all properties of high-chromium abrasion-proof cast iron steel ball, and make steel ball there is high abrasion, high work-ing life.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.

Claims (5)

1. a high-chromium abrasion-proof cast iron steel ball, is characterized in that, the weight percentage of its each component is as follows:
C:2.6%-2.8%; Si:0.8%-1.2%; Cr:18%-20%; Mn:2.3%-2.5%; V:0.02%-0.05%; Ti:0.02%-0.03%; Al:0.2%-0.4%; B:0.005%-0.01%; Mo:0.15%-0.25%; S:0-0.02%; P:0-0.06%; Clout is Fe;
According to above-mentioned each component proportion, prepare described high-chromium abrasion-proof cast iron steel ball according to following processing step:
S1: take raw material by each component weight percentage and carry out melting, obtain molten iron, deoxidation, cast, after casting, cleaning, obtains foundry goods;
S2: the foundry goods obtaining in S1, at 930-940 DEG C, is incubated to 2-3 hour, and then shrend, is warming up to 230-240 DEG C by the foundry goods after quenching and carries out temper, is incubated after 1-2 hour, moves into burial pit Slow cooling to room temperature, obtains abrasion-proof steel ball finished product.
2. high-chromium abrasion-proof cast iron steel ball according to claim 1, is characterized in that, the weight percentage of its each component is as follows:
C:2.65%-2.75%; Si:0.9%-1.05%; Cr:18.5%-19.5%; Mn:2.35%-2.45%; V:0.03%-0.04%; Ti:0.022%-0.028%; Al:0.25%-0.35%; B:0.006%-0.008%; Mo:0.18%-0.22%; S:0-0.01%; P:0-0.03%; Clout is Fe.
3. high-chromium abrasion-proof cast iron steel ball according to claim 1, is characterized in that, the weight percentage of its each component is as follows:
C:2.7%; Si:1.0%; Cr:19%; Mn:2.4%; V:0.035%; Ti:0.025%; Al:0.3%; B:0.007%; Mo:0.2%; S:0.004%; P:0.02%; Clout is Fe.
4. high-chromium abrasion-proof cast iron steel ball according to claim 1, it is characterized in that, in step S2, the foundry goods obtaining in S1, at 933-937 DEG C, is incubated to 2.5 hours, then shrend, foundry goods after quenching is warming up to 232-238 DEG C and carries out temper, be incubated after 1.5 hours, move into burial pit Slow cooling to room temperature, obtain abrasion-proof steel ball finished product.
5. high-chromium abrasion-proof cast iron steel ball according to claim 1, it is characterized in that, in step S2, the foundry goods obtaining in S1, at 935 DEG C, is incubated to 2.5 hours, then shrend, foundry goods after quenching is warming up to 235 DEG C and carries out temper, be incubated after 1.5 hours, move into burial pit Slow cooling to room temperature, obtain abrasion-proof steel ball finished product.
CN201410377339.3A 2014-08-01 2014-08-01 High-Cr abrasion-resistant cast iron steel ball Pending CN104109798A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104561761A (en) * 2014-12-31 2015-04-29 宁国市双林工贸有限公司 High-chromium wear resistant steel ball
CN104630609A (en) * 2015-02-06 2015-05-20 铜陵百荣新型材料铸件有限公司 Antifriction cast iron and preparation method thereof
CN105200327A (en) * 2015-09-29 2015-12-30 湖南电力耐磨金属制品有限公司 Corrosion-resistant casting steel ball and heat treatment method thereof
CN105256116A (en) * 2015-10-27 2016-01-20 武昌船舶重工集团有限公司 Hot press molding method for spherical head made of 10CrNi3MoV steel
CN105331875A (en) * 2015-11-05 2016-02-17 宁国市南方耐磨材料有限公司 Nano-modified wear-resisting alloy ball and preparation method thereof
CN105886726A (en) * 2016-06-20 2016-08-24 马鞍山市益丰实业集团有限公司 Method for preparing abrasion-resistant balls for flue gas desulfurization ball mills

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CN102534356A (en) * 2012-02-13 2012-07-04 驻马店市永诚耐磨材料有限公司 Wear-resistant white cast iron material and preparation method thereof
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104561761A (en) * 2014-12-31 2015-04-29 宁国市双林工贸有限公司 High-chromium wear resistant steel ball
CN104561761B (en) * 2014-12-31 2017-08-29 宁国市双林工贸有限公司 A kind of high-chromium wear-resistant steel ball
CN104630609A (en) * 2015-02-06 2015-05-20 铜陵百荣新型材料铸件有限公司 Antifriction cast iron and preparation method thereof
CN105200327A (en) * 2015-09-29 2015-12-30 湖南电力耐磨金属制品有限公司 Corrosion-resistant casting steel ball and heat treatment method thereof
CN105256116A (en) * 2015-10-27 2016-01-20 武昌船舶重工集团有限公司 Hot press molding method for spherical head made of 10CrNi3MoV steel
CN105331875A (en) * 2015-11-05 2016-02-17 宁国市南方耐磨材料有限公司 Nano-modified wear-resisting alloy ball and preparation method thereof
CN105886726A (en) * 2016-06-20 2016-08-24 马鞍山市益丰实业集团有限公司 Method for preparing abrasion-resistant balls for flue gas desulfurization ball mills

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