CN104087848A - Compound type wear-resisting lining plate - Google Patents
Compound type wear-resisting lining plate Download PDFInfo
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- CN104087848A CN104087848A CN201410301756.XA CN201410301756A CN104087848A CN 104087848 A CN104087848 A CN 104087848A CN 201410301756 A CN201410301756 A CN 201410301756A CN 104087848 A CN104087848 A CN 104087848A
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Abstract
The invention discloses a compound type wear-resisting lining plate which takes low-carbon high-manganese steel as a matrix two sides of which are respectively cast with high-manganese steel and high-chromium cast iron. The high-manganese steel consists of the following components in percent by weight: 0.95-1.1% of C, 11.5-12.8% of Mn, 0.4-0.6% of Si, 3.6-3.8% of Cr, 0.8-1.0% of Mo, not greater than 0.04% of S, not greater than 0.01% of P, 0.04-0.1% of Re, and the balance of Fe; the high-chromium cast iron consists of the following components in percent by weight: 2.95-3.1% of C, 0.5-0.8% of Mn, 0.5-0.6% of Si, 17.5-18.8% of Cr, 1.8-2.0% of Mo, not greater than 0.04% of S, not greater than 0.01% of P, 0.04-0.1% of Re, and the balance of Fe. According to the compound type wear-resisting lining plate disclosed by the invention, the high-chromium cast iron and the high-manganese steel are combined well without dropping and loosening; meanwhile, the compound type wear-resisting lining plate has toughness of the high-manganese steel and wear resistance of the high-chromium cast iron, has the characteristics of being high in toughness, high in wear resistance and corrosion-resistant, so that service life of the lining plate is 2.2-2.5 times that of a single high-manganese steel lining plate and 2.0-2.4 times that of a single high-chromium cast iron lining plate, and therefore, cost is greatly reduced.
Description
Technical field
The present invention relates to abrasion-proof backing block technical field, be specifically related to a kind of compound abrasion-proof backing block.
Background technology
High-abrasive material is the type material that a large class has particular electrical, magnetic, light, sound, heat, power, chemistry and biological function, be the important foundation material of the high-tech sectors such as information technology, biotechnology, energy technology and national defense construction, also have a very important role to transforming some conventional industries simultaneously.
Abrasion-proof backing block, refer to that wear-resisting steel plate processes various abrasion-proof backing blocks by production technique such as cutting, roll bending distortion, punching and welding, as transfer roller liner plate, feeder base plate/cyclonic separator back taper and liner plate, abrasion-resistant blade etc., friction durability, comparable general steel plate improved more than 15 times.
High mangaenese steel its work hardening capacity under low stress abrasive wear operating mode is difficult to performance and has affected effect.High chrome cast iron lining plate has good wear resistance, but its obdurability is lower, under transport, installation and heavily stressed operating mode, uses and easily ruptures.Therefore, single material is difficult to meet the requirement of wider stress range operating mode often.Research shows, improving on the basis of wear-resistant material over-all properties, adopt the high-chromium white cast iron by high-strength toughness steel and high-wearing feature, adopt double-metal composite casting process, can obtain the integral composite foundry goods that has bi-material characteristic concurrently, therefore the compound liner plate that, how bi-material characteristic is blent into one, improved a kind of long service life is a problem demanding prompt solution.
Summary of the invention
For the problems referred to above, the invention provides a kind of compound abrasion-proof backing block, combine the toughness of high mangaenese steel and the wear resistance of rich chromium cast iron, the work-ing life of having improved compound abrasion-proof backing block.
In order to address the above problem, technical scheme provided by the invention is:
A kind of compound abrasion-proof backing block, taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of described high mangaenese steel are: C:0.95-1.1%, Mn:11.5-12.8%, Si:0.4-0.6%, Cr:3.6-3.8%, Mo:0.8-1.0%, S :≤0.04%, P :≤0.01%, Re:0.04-0.1%; Surplus is Fe; Each composition and the weight percent thereof of described rich chromium cast iron are: C:2.95-3.1%, Mn:0.5-0.8%, Si:0.5-0.6%, Cr:17.5-18.8%, Mo:1.8-2.0%, S :≤0.04%, P :≤0.01%, Re:0.04-0.1%; Surplus is Fe.
Preferably, taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of described high mangaenese steel are: C:0.98-1.1%, Mn:11.8-12.8%, Si:0.45-0.6%, Cr:3.6-3.8%, Mo:0.85-1.0%, S :≤0.04%, P :≤0.01%, Re:0.04-0.1%; Surplus is Fe; Each composition and the weight percent thereof of described rich chromium cast iron are: C:2.95-3.05%, Mn:0.55-0.8%, Si:0.54-0.6%, Cr:17.8-18.8%, Mo:1.85-2.0%, S :≤0.04%, P :≤0.01%, Re:0.06-0.1%; Surplus is Fe.
Preferably, taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of described high mangaenese steel are: C:0.98%, Mn:11.8%, Si:0.5%, Cr:3.65%, Mo:0.85%, S:0.03%, P:0.01%, Re:0.06%; Surplus is Fe; Each composition and the weight percent thereof of described rich chromium cast iron are: C:3.05%, Mn:0.65%, Si:0.54%, Cr:18.2%, Mo:1.88%, S:0.02%, P:0.005%, Re:0.07%; Surplus is Fe.
The preparation method of described compound abrasion-proof backing block, comprises the following steps:
(1) prepare sand mold, utilize 50-80 object washed-out sands to make sand mold, wherein: 60-80 object washed-out sands account for 25-28%, 50-60 object washed-out sands and account for 72-75%;
(2) raw material melting, by high mangaenese steel, rich chromium cast iron described in proportioning raw materials melting, the smelting temperature of described high mangaenese steel is: 1580-1600 DEG C, the smelting temperature of described rich chromium cast iron is: 1460-1480 DEG C;
(3) by described matrix with 85-88% hydrochloric acid cleaning, dry;
(4) cast, described matrix is placed in described sand mold, first pours into a mould described rich chromium cast iron in a side, after 80-100 seconds, pour into a mould described high mangaenese steel at opposite side again, the teeming temperature of described high mangaenese steel is: 1510-1520 DEG C, the teeming temperature of described rich chromium cast iron is: 1440-1445 DEG C;
(5) be cooled to after room temperature, remove dead head, unpack, deburring, polishing;
(6) thermal treatment, quench treatment: first 400-420 DEG C of insulations 0.5-0.6 hour, then 740-760 DEG C of insulations 0.6-0.8 hour, then 1120-1150 DEG C of insulations 1.4-1.6 hours; After being cooled to room temperature, carry out temper, first 210-230 DEG C of insulations 0.6-0.8 hour, then 340-360 DEG C of insulations 1.8-2.0 hours.
C: form stable compound with Fe, Cr, Mn, improve its hardness and wear resistance by thermal treatment; C and other elements produce synergy, improve the over-all properties of abrasion-proof backing block.
Mn: be strengthening element, incorporate ferrite, strengthening matrix, can thinning microstructure, improves intensity, hardness, the wear resistance of abrasion-proof backing block.
Cr: the hardening capacity that improves material, the graphite that can effectively prevent free state produces, and makes common cementite change alloyed cementite into, improves intensity and the hardness of abrasion-proof backing block entirety, there is good erosion resistance and antioxidant property, stop greying, improve hardening capacity.
Mo: can effectively suppress cementite and assemble, strengthening austenite structure, increases intensity and hardness, and strain-hardening performance strengthens, thereby improves fastness to wear.
Re: toughness and the wear resistance of improving abrasion-proof backing block.Add Re to make grain refining, inclusion even dispersion distributes, and pattern, taking spherical as main, weakens the isolate effect of inclusion to matrix.
Compared with prior art, beneficial effect of the present invention is:
Compound abrasion-proof backing block rich chromium cast iron of the present invention is combined with high mangaenese steel well, do not depart from, do not become flexible, possessed the toughness of high mangaenese steel and the wear resistance of rich chromium cast iron simultaneously, there is high tenacity, high abrasion, erosion-resisting feature, be 2.2-2.5 times of single high manganese steel lining plate work-ing life, be 2.0-2.4 times of single high chrome cast iron lining plate, greatly provide cost savings.
Embodiment
The present invention will be further described below:
Embodiment 1:
A kind of compound abrasion-proof backing block, taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of described high mangaenese steel are: C:0.98%, Mn:11.8%, Si:0.5%, Cr:3.65%, Mo:0.85%, S:0.03%, P:0.01%, Re:0.06%; Surplus is Fe; Each composition and the weight percent thereof of described rich chromium cast iron are: C:3.05%, Mn:0.65%, Si:0.54%, Cr:18.2%, Mo:1.88%, S:0.02%, P:0.005%, Re:0.07%; Surplus is Fe.
The preparation method of compound abrasion-proof backing block, comprises the following steps:
(1) prepare sand mold, utilize 50-80 object washed-out sands to make sand mold, wherein: 60-80 object washed-out sands account for 26%, 50-60 object washed-out sands account for 74%;
(2) raw material melting, by proportioning raw materials melting high mangaenese steel, rich chromium cast iron, the smelting temperature of high mangaenese steel is: 1585 DEG C, the smelting temperature of rich chromium cast iron is: 1470 DEG C;
(3) by matrix with 86% hydrochloric acid cleaning, dry;
(4) cast, is placed in matrix in sand mold, and first at a side cast rich chromium cast iron, after 90 seconds, again at opposite side cast high mangaenese steel, the teeming temperature of high mangaenese steel is: 1515 DEG C, the teeming temperature of rich chromium cast iron is: 1442 DEG C;
(5) be cooled to after room temperature, remove dead head, unpack, deburring, polishing;
(6) thermal treatment, quench treatment: first 410 DEG C of insulations 0.55 hour, then 750 DEG C of insulations 0.7 hour, then 1135 DEG C of insulations 1.5 hours; After being cooled to room temperature, carry out temper, first 220 DEG C of insulations 0.7 hour, then 350 DEG C of insulations 1.9 hours.
C: form stable compound with Fe, Cr, Mn, improve its hardness and wear resistance by thermal treatment; C and other elements produce synergy, improve the over-all properties of abrasion-proof backing block.
Mn: be strengthening element, incorporate ferrite, strengthening matrix, can thinning microstructure, improves intensity, hardness, the wear resistance of abrasion-proof backing block.
Cr: the hardening capacity that improves material, the graphite that can effectively prevent free state produces, and makes common cementite change alloyed cementite into, improves intensity and the hardness of abrasion-proof backing block entirety, there is good erosion resistance and antioxidant property, stop greying, improve hardening capacity.
Mo: can effectively suppress cementite and assemble, strengthening austenite structure, increases intensity and hardness, and strain-hardening performance strengthens, thereby improves fastness to wear.
Re: toughness and the wear resistance of improving abrasion-proof backing block.Add Re to make grain refining, inclusion even dispersion distributes, and pattern, taking spherical as main, weakens the isolate effect of inclusion to matrix.
Embodiment 2:
A kind of compound abrasion-proof backing block, taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of high mangaenese steel are: C:0.95%, Mn:12.8%, Si:0.4%, Cr:3.8%, Mo:0.8%, S:0.04%, P:0.01%, Re:0.04%; Surplus is Fe; Each composition and the weight percent thereof of rich chromium cast iron are: C:3.1%, Mn:0.5%, Si:0.6%, Cr:17.5%, Mo:2.0%, S:0.04%, P:0.01%, Re:0.04%; Surplus is Fe.
The preparation method of compound abrasion-proof backing block, comprises the following steps:
(1) prepare sand mold, utilize 50-80 object washed-out sands to make sand mold, wherein: 60-80 object washed-out sands account for 28%, 50-60 object washed-out sands account for 72%;
(2) raw material melting, by proportioning raw materials melting high mangaenese steel, rich chromium cast iron, the smelting temperature of high mangaenese steel is: 1600 DEG C, the smelting temperature of rich chromium cast iron is: 1460 DEG C;
(3) by matrix with 88% hydrochloric acid cleaning, dry;
(4) cast, is placed in matrix in sand mold, and first at a side cast rich chromium cast iron, after 80 seconds, again at opposite side cast high mangaenese steel, the teeming temperature of high mangaenese steel is: 1520 DEG C, the teeming temperature of rich chromium cast iron is: 1440 DEG C;
(5) be cooled to after room temperature, remove dead head, unpack, deburring, polishing;
(6) thermal treatment, quench treatment: first 420 DEG C of insulations 0.5 hour, then 760 DEG C of insulations 0.6 hour, then 1150 DEG C of insulations 1.4 hours; After being cooled to room temperature, carry out temper, first 230 DEG C of insulations 0.6 hour, then 360 DEG C of insulations 1.8 hours.
Embodiment 3:
A kind of compound abrasion-proof backing block, taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of high mangaenese steel are: C:1.1%, Mn:11.5%, Si:0.6%, Cr:3.6%, Mo:1.0%, S:0.02%, P:0.008%, Re:0.1%; Surplus is Fe; Each composition and the weight percent thereof of rich chromium cast iron are: C:2.95%, Mn:0.8%, Si:0.5%, Cr:18.8%, Mo:1.8%, S:0.03%, P :≤0.007%, Re:0.1%; Surplus is Fe.
The preparation method of compound abrasion-proof backing block, comprises the following steps:
(1) prepare sand mold, utilize 50-80 object washed-out sands to make sand mold, wherein: 60-80 object washed-out sands account for 25%, 50-60 object washed-out sands account for 75%;
(2) raw material melting, by proportioning raw materials melting high mangaenese steel, rich chromium cast iron, the smelting temperature of high mangaenese steel is: 1600 DEG C, the smelting temperature of rich chromium cast iron is: 1460 DEG C;
(3) by matrix with 88% hydrochloric acid cleaning, dry;
(4) cast, is placed in matrix in sand mold, and first at a side cast rich chromium cast iron, after 100 seconds, again at opposite side cast high mangaenese steel, the teeming temperature of high mangaenese steel is: 1510 DEG C, the teeming temperature of rich chromium cast iron is: 1445 DEG C;
(5) be cooled to after room temperature, remove dead head, unpack, deburring, polishing;
(6) thermal treatment, quench treatment: first 400 DEG C of insulations 0.6 hour, then 740 DEG C of insulations 0.8 hour, then 1120 DEG C of insulations 1.6 hours; After being cooled to room temperature, carry out temper, first 210 DEG C of insulations 0.8 hour, then 340 DEG C of insulations 2.0 hours.
Embodiment 4:
A kind of compound abrasion-proof backing block, taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of high mangaenese steel are: C:0.95%, Mn:11.5%, Si:0.6%, Cr:3.8%, Mo:0.8%, S:0.01%, P :≤0.005%, Re:0.04%; Surplus is Fe; Each composition and the weight percent thereof of rich chromium cast iron are: C:3.1%, Mn:0.8%, Si:0.5%, Cr:17.5%, Mo:2.0%, S:0.02%, P :≤0.006%, Re:0.1%; Surplus is Fe.
The preparation method of compound abrasion-proof backing block, comprises the following steps:
(1) prepare sand mold, utilize 50-80 object washed-out sands to make sand mold, wherein: 60-80 object washed-out sands account for 28%, 50-60 object washed-out sands account for 72%;
(2) raw material melting, by proportioning raw materials melting high mangaenese steel, rich chromium cast iron, the smelting temperature of high mangaenese steel is: 1580 DEG C, the smelting temperature of rich chromium cast iron is: 1460 DEG C;
(3) by matrix with 85% hydrochloric acid cleaning, dry;
(4) cast, is placed in matrix in sand mold, and first at a side cast rich chromium cast iron, after 100 seconds, again at opposite side cast high mangaenese steel, the teeming temperature of high mangaenese steel is: 1520 DEG C, the teeming temperature of rich chromium cast iron is: 1445 DEG C;
(5) be cooled to after room temperature, remove dead head, unpack, deburring, polishing;
(6) thermal treatment, quench treatment: first 400 DEG C of insulations 0.6 hour, then 740 DEG C of insulations 0.8 hour, then 1140 DEG C of insulations 1.5 hours; After being cooled to room temperature, carry out temper, first 220 DEG C of insulations 0.7 hour, then 350 DEG C of insulations 1.9 hours.
Embodiment 5:
A kind of compound abrasion-proof backing block, taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of high mangaenese steel are: C:1.05%, Mn:12.5%, Si:0.48%, Cr:3.65%, Mo:0.95%, S:0.01%, P:0.008%, Re:0.06%; Surplus is Fe; Each composition and the weight percent thereof of rich chromium cast iron are: C:3.0%, Mn:0.6%, Si:0.57%, Cr:18.5%, Mo:1.84%, S:0.02%, P:0.006%, Re:0.08%; Surplus is Fe.
The preparation method of compound abrasion-proof backing block, comprises the following steps:
(1) prepare sand mold, utilize 50-80 object washed-out sands to make sand mold, wherein: 60-80 object washed-out sands account for 27%, 50-60 object washed-out sands account for 73%;
(2) raw material melting, by proportioning raw materials melting high mangaenese steel, rich chromium cast iron, the smelting temperature of high mangaenese steel is: 1588 DEG C, the smelting temperature of rich chromium cast iron is: 1476 DEG C;
(3) by matrix with 86% hydrochloric acid cleaning, dry;
(4) cast, is placed in matrix in sand mold, and first at a side cast rich chromium cast iron, after 95 seconds, again at opposite side cast high mangaenese steel, the teeming temperature of high mangaenese steel is: 1516 DEG C, the teeming temperature of rich chromium cast iron is: 1442 DEG C;
(5) be cooled to after room temperature, remove dead head, unpack, deburring, polishing;
(6) thermal treatment, quench treatment: first 405 DEG C of insulations 0.5 hour, then 745 DEG C of insulations 0.8 hour, then 1140 DEG C of insulations 1.4 hours; After being cooled to room temperature, carry out temper, first 210 DEG C of insulations 0.8 hour, then 345 DEG C of insulations 1.85 hours.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. a compound abrasion-proof backing block, it is characterized in that: taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of described high mangaenese steel are: C:0.95-1.1%, Mn:11.5-12.8%, Si:0.4-0.6%, Cr:3.6-3.8%, Mo:0.8-1.0%, S :≤0.04%, P :≤0.01%, Re:0.04-0.1%; Surplus is Fe; Each composition and the weight percent thereof of described rich chromium cast iron are: C:2.95-3.1%, Mn:0.5-0.8%, Si:0.5-0.6%, Cr:17.5-18.8%, Mo:1.8-2.0%, S :≤0.04%, P :≤0.01%, Re:0.04-0.1%; Surplus is Fe.
2. compound abrasion-proof backing block according to claim 1, it is characterized in that: taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of described high mangaenese steel are: C:0.98-1.1%, Mn:11.8-12.8%, Si:0.45-0.6%, Cr:3.6-3.8%, Mo:0.85-1.0%, S :≤0.04%, P :≤0.01%, Re:0.04-0.1%; Surplus is Fe; Each composition and the weight percent thereof of described rich chromium cast iron are: C:2.95-3.05%, Mn:0.55-0.8%, Si:0.54-0.6%, Cr:17.8-18.8%, Mo:1.85-2.0%, S :≤0.04%, P :≤0.01%, Re:0.06-0.1%; Surplus is Fe.
3. compound abrasion-proof backing block according to claim 1, it is characterized in that: taking low-carbon high-manganese steel as matrix, pour into a mould respectively high mangaenese steel, rich chromium cast iron in matrix both sides, each composition and the weight percent thereof of described high mangaenese steel are: C:0.98%, Mn:11.8%, Si:0.5%, Cr:3.65%, Mo:0.85%, S:0.03%, P:0.01%, Re:0.06%; Surplus is Fe; Each composition and the weight percent thereof of described rich chromium cast iron are: C:3.05%, Mn:0.65%, Si:0.54%, Cr:18.2%, Mo:1.88%, S:0.02%, P:0.005%, Re:0.07%; Surplus is Fe.
4. the preparation method of compound abrasion-proof backing block according to claim 1, is characterized in that, comprises the following steps:
(1) prepare sand mold, utilize 50-80 object washed-out sands to make sand mold, wherein: 60-80 object washed-out sands account for 25-28%, 50-60 object washed-out sands and account for 72-75%;
(2) raw material melting, by high mangaenese steel, rich chromium cast iron described in proportioning raw materials melting, the smelting temperature of described high mangaenese steel is: 1580-1600 DEG C, the smelting temperature of described rich chromium cast iron is: 1460-1480 DEG C;
(3) by described matrix with 85-88% hydrochloric acid cleaning, dry;
(4) cast, described matrix is placed in described sand mold, first pours into a mould described rich chromium cast iron in a side, after 80-100 seconds, pour into a mould described high mangaenese steel at opposite side again, the teeming temperature of described high mangaenese steel is: 1510-1520 DEG C, the teeming temperature of described rich chromium cast iron is: 1440-1445 DEG C;
(5) be cooled to after room temperature, remove dead head, unpack, deburring, polishing;
(6) thermal treatment, quench treatment: first 400-420 DEG C of insulations 0.5-0.6 hour, then 740-760 DEG C of insulations 0.6-0.8 hour, then 1120-1150 DEG C of insulations 1.4-1.6 hours; After being cooled to room temperature, carry out temper, first 210-230 DEG C of insulations 0.6-0.8 hour, then 340-360 DEG C of insulations 1.8-2.0 hours.
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| CN104328332A (en) * | 2014-10-24 | 2015-02-04 | 驻马店市三山耐磨材料有限公司 | High-chromium iron lining plate |
| CN104988412A (en) * | 2015-07-06 | 2015-10-21 | 无锡阳工机械制造有限公司 | Rotor of wind driven generator |
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| CN105709881B (en) * | 2014-12-02 | 2019-12-13 | 河北泰铭能源集团有限公司 | Nonmetal-metal static multilayer composite ultrahigh wear-resistant grinding disc tile and manufacturing method thereof |
| CN104988412A (en) * | 2015-07-06 | 2015-10-21 | 无锡阳工机械制造有限公司 | Rotor of wind driven generator |
| CN107557537A (en) * | 2017-08-29 | 2018-01-09 | 马鞍山市晨光高耐磨科技发展有限公司 | The preparation method of high-ductility high wear resistance composite board |
| CN107557537B (en) * | 2017-08-29 | 2019-04-12 | 马鞍山市晨光高耐磨科技发展有限公司 | The preparation method of high-ductility high wear resistance composite board |
| CN108246412A (en) * | 2018-03-07 | 2018-07-06 | 渠县金城合金铸业有限公司 | A kind of Abrasion-resistant tooth roller shell of roll crusher |
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