CN110093560A - A kind of wear-resistant liner and its casting method - Google Patents
A kind of wear-resistant liner and its casting method Download PDFInfo
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- CN110093560A CN110093560A CN201910364772.6A CN201910364772A CN110093560A CN 110093560 A CN110093560 A CN 110093560A CN 201910364772 A CN201910364772 A CN 201910364772A CN 110093560 A CN110093560 A CN 110093560A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/22—Lining for containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/56—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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Abstract
A kind of wear-resistant liner and its casting method, the weight percent of each component are as follows: C:1.5~2.5%；Cr:10.0~14.0%；Si:0.4~0.8%；Mn:8.2~12.0%；Mo:0.40~0.80%；B:0.6~1.2%；Ni:0.4~0.8%；Ti:0.10~0.50%；Zr:0.10~0.40%；Al:0.04~0.12%；V:0.10~0.40%；S:0.02~0.06%；P:0.01~0.06%；W:0.2~0.8%；Nb:0.2~0.6%；Ta:0.06~0.12%；Cu:0.50~0.80%；Re:0.02~0.06%；Surplus is Fe and inevitable impurity.The casting method is simple, at low cost, and liner plate obdurability height, harden ability and hardenability are good.
Description
Technical field
The invention belongs to wear-resistant material technical field, especially a kind of wear-resistant liner and its casting method.
Background technique
Liner plate is so that cylinder is directly impacted and is rubbed from abrasive body and material for protecting cylinder, can also be used simultaneously
Various forms of liner plates are helped to improve to adjust the motion state of abrasive body with enhancing pulverization of the abrasive body to material
The mill efficiency of grinding machine increases yield, reduces metal consumption.There are production technology complexity, use for existing abrasion-proof cast steel lining board
The technical issues of service life is short and uses poor toughness.
Summary of the invention
The object of the present invention is to provide a kind of wear-resistant liner and its casting method, casting method is simple, at low cost, obtained
Liner plate obdurability height, harden ability and hardenability are good, and are pollution-free wear-resistant liner.
The present invention is achieved by the following technical solutions:
The weight percent of a kind of wear-resistant liner, each component is as follows: C:1.5~2.5%；Cr:10.0~14.0%；
Si:0.4~0.8%；Mn:8.2~12.0%；Mo:0.40~0.80%；B:0.6~1.2%；Ni:0.4~0.8%；Ti:
0.10~0.50%；Zr:0.10~0.40%；Al:0.04~0.12%；V:0.10~0.40%；S:0.02~0.06%；P:
0.01~0.06%；W:0.2~0.8%；Nb:0.2~0.6%；Ta:0.06~0.12%；Cu:0.50~0.80%；Re:
0.02~0.06%；Surplus is Fe and inevitable impurity.
Preferably, the weight percent of a kind of wear-resistant liner, each component is as follows: C:1.8~2.2%；Cr:11.0~
13.0%；Si:0.5~0.7%；Mn:9.0~11.0%；Mo:0.50~0.70%；B:0.8~1.0%；Ni:0.5~
0.7%；Ti:0.20~0.40%；Zr:0.20~0.40%；Al:0.06~0.08%；V:0.20~0.40%；S:0.03~
0.05%；P:0.02~0.05%；W:0.4~0.6%；Nb:0.4~0.6%；Ta:0.08~0.10%；Cu:0.60~
0.80%；Re:0.03~0.05%；Surplus is Fe and inevitable impurity.
Preferably, the weight percent of a kind of wear-resistant liner, each component is as follows: C:2.0%；Cr:12.0%；Si:
0.6%；Mn:10.0%；Mo:0.60%；B:0.9%；Ni:0.6%；Ti:0.30%；Zr:0.30%；Al:0.07%；V:
0.30%；S:0.04%；P:0.03%；W:0.5%；Nb:0.5%；Ta:0.09%；Cu:0.70%；Re:0.04%；Surplus
For Fe and inevitable impurity.
A kind of casting method of wear-resistant liner, comprising the following steps:
(1) preparation of casting sand type: the material of sand mold is manufactured by following material composition: casting model powder, furane resins and sulfonic acid
Curing agent, in which: the weight of furane resins is the 1.0~1.5% of casting model powder weight, the quality of sulfonic acid curing agent and furane resins
Than for 1:4, casting model powder, furane resins and sulfonic acid curing agent are stirred 25~30min in stirrer for mixing up to casting type
Sand；Using the casting sand type of the moulding sand for casting production wear-resistant liner of above-mentioned preparation, 2h is stood after casting sand type finishing；It stands
Afterwards, the first coating is brushed on casting sand type, which is made of Brown Alundum and alcohol, in which: Brown Alundum accounts for
The mass percent of one coating be 55%, the first coating with a thickness of 1.0~1.2mm, to the first coating after brushing
Ignition sintering；After first layer coating ignition sintering, casting sand type is purged with gas, and the brushing second layer applies on casting sand type
Material, second coating are made of Brown Alundum and alcohol, in which: and the mass percent that Brown Alundum accounts for the second coating is 35%,
Second coating with a thickness of 0.8~1.0mm, to second layer coating ignition sintering after brushing；Second layer coating ignition sintering
Later, the brushing release agent in casting sand type；
(2) raw material is weighed by each component weight percent, electrosmelting of intermediate frequency is then added, carry out deoxidation treatment, until
1400~1500 DEG C are come out of the stove, and molten iron is obtained；
(3) molten iron that step (2) obtains is cast into the type chamber of step (1) casting sand type, cast temperature be 1500~
It 1600 DEG C, natural cooling 1.5h after casting, unpacks after cooling and casting is cleared up to obtain wear-resistant liner casting；
(4) the wear-resistant liner casting obtained to step (3) is heat-treated, and process is as follows:
1) wear-resistant liner casting is fitted into heat-treatment furnace, is warming up to 200 DEG C with the heating rate control of 6 DEG C/min, protects
Temperature 160 minutes；350 DEG C are warming up to the heating rate control of 7 DEG C/min again, keeps the temperature 120 minutes；Again with the heating of 10 DEG C/min
Rate control is warming up to 610 DEG C, keeps the temperature 100 minutes；860 DEG C are warming up to the heating rate control of 6 DEG C/min again, keeps the temperature 80 points
Clock；1018 DEG C are warming up to the heating rate control of 3 DEG C/min again, goes out heat-treatment furnace after heat preservation 250 minutes；
2) step 1) treated wear-resistant liner casting is subjected to wind quenching processe, wind quenching processe is enterprising in vibration platform
Row opens vibration platform, so that the vibration of vibration platform before wear-resistant liner casting is poured over vibration platform
Dynamic frequency is 16~18Hz, and the amplitude of vertical direction is 10~20cm, and opens simultaneously temperature-dropping fan and carry out wind quenching processe, when resistance to
When the surface temperature of mill lining plate casting is down to 610 DEG C, closing temperature-dropping fan makes wear-resistant liner casting naturally cool to surface temperature
It is 350 DEG C, at this point, closing the vibration device of vibration platform and reopening temperature-dropping fan, until wear-resistant liner casting is cold
But to room temperature；
3) by step 2), treated that wear-resistant liner casting is again loaded into heat-treatment furnace, carries out tempering.
A kind of casting method of wear-resistant liner, specific step is as follows for the tempering in step 3):
It is tempered for the first time: being warming up to 170 DEG C with the heating rate control of 15 DEG C/min, keep the temperature 20 minutes；Again with 20 DEG C/
The heating rate control of min is warming up to 310 DEG C, keeps the temperature 25 minutes；400 are warming up to again with the heating rate control of 10 DEG C/min
DEG C, 240 minutes are kept the temperature, furnace cooling after insulating process；
Second of tempering: 180 DEG C are warming up to the heating rate control of 12 DEG C/min, keeps the temperature 25 minutes；Again with 18 DEG C/
The heating rate control of min is warming up to 320 DEG C, keeps the temperature 27 minutes；390 are warming up to again with the heating rate control of 13 DEG C/min
DEG C, 230 minutes are kept the temperature, furnace cooling after insulating process；
Third time is tempered: being warming up to 200 DEG C with the heating rate control of 17 DEG C/min, is kept the temperature 30 minutes；Again with 18 DEG C/
The heating rate control of min is warming up to 300 DEG C, keeps the temperature 35 minutes；400 DEG C are warming up to the heating rate control of 8 DEG C/min again,
Heat preservation 220 minutes, furnace cooling is after insulating process to get wear-resistant liner.
The present invention provides a kind of wear-resistant liner and its casting method, wear-resistant liner hardness produced by the present invention are high, wear-resisting, resistance to
High temperature, while toughness is preferable, impact resistance is good, and the present invention also provides the casting methods of wear-resistant liner, and this method is advanced, packet
It includes: Castiron Melting and casting, liner plate casting outlet and cleaning, liner plate heat treating castings and final inspection；Manufactured wear-resistant liner is comprehensive
Excellent in mechanical performance, long service life have wide cost performance competitive space.
Specific embodiment
The present invention will be further described with reference to the examples below.
Embodiment 1
The weight percent of a kind of wear-resistant liner, each component is as follows: C:1.5%；Cr:10.0%；Si:0.4%；Mn:
8.2%；Mo:0.40%；B:0.6%；Ni:0.4%；Ti:0.10%；Zr:0.10%；Al:0.04%；V:0.10%；S:
0.02%；P:0.01%；W:0.2%；Nb:0.2%；Ta:0.06%；Cu:0.50%；Re:0.02%；Surplus is Fe and can not
The impurity avoided.
A kind of casting method of wear-resistant liner, comprising the following steps:
(1) preparation of casting sand type: the material of sand mold is manufactured by following material composition: casting model powder, furane resins and sulfonic acid
Curing agent, in which: the weight of furane resins is the 1.0~1.5% of casting model powder weight, the quality of sulfonic acid curing agent and furane resins
Than for 1:4, casting model powder, furane resins and sulfonic acid curing agent are stirred 25~30min in stirrer for mixing up to casting type
Sand；Using the casting sand type of the moulding sand for casting production wear-resistant liner of above-mentioned preparation, 2h is stood after casting sand type finishing；It stands
Afterwards, the first coating is brushed on casting sand type, which is made of Brown Alundum and alcohol, in which: Brown Alundum accounts for
The mass percent of one coating be 55%, the first coating with a thickness of 1.0~1.2mm, to the first coating after brushing
Ignition sintering；After first layer coating ignition sintering, casting sand type is purged with gas, and the brushing second layer applies on casting sand type
Material, second coating are made of Brown Alundum and alcohol, in which: and the mass percent that Brown Alundum accounts for the second coating is 35%,
Second coating with a thickness of 0.8~1.0mm, to second layer coating ignition sintering after brushing；Second layer coating ignition sintering
Later, the brushing release agent in casting sand type；
(2) raw material is weighed by each component weight percent, electrosmelting of intermediate frequency is then added, carry out deoxidation treatment, until
1400~1500 DEG C are come out of the stove, and molten iron is obtained；
(3) molten iron that step (2) obtains is cast into the type chamber of step (1) casting sand type, cast temperature be 1500~
It 1600 DEG C, natural cooling 1.5h after casting, unpacks after cooling and casting is cleared up to obtain wear-resistant liner casting；
(4) the wear-resistant liner casting obtained to step (3) is heat-treated, and process is as follows:
1) wear-resistant liner casting is fitted into heat-treatment furnace, is warming up to 200 DEG C with the heating rate control of 6 DEG C/min, protects
Temperature 160 minutes；350 DEG C are warming up to the heating rate control of 7 DEG C/min again, keeps the temperature 120 minutes；Again with the heating of 10 DEG C/min
Rate control is warming up to 610 DEG C, keeps the temperature 100 minutes；860 DEG C are warming up to the heating rate control of 6 DEG C/min again, keeps the temperature 80 points
Clock；1018 DEG C are warming up to the heating rate control of 3 DEG C/min again, goes out heat-treatment furnace after heat preservation 250 minutes；
2) step 1) treated wear-resistant liner casting is subjected to wind quenching processe, wind quenching processe is enterprising in vibration platform
Row opens vibration platform, so that the vibration of vibration platform before wear-resistant liner casting is poured over vibration platform
Dynamic frequency is 16~18Hz, and the amplitude of vertical direction is 10~20cm, and opens simultaneously temperature-dropping fan and carry out wind quenching processe, when resistance to
When the surface temperature of mill lining plate casting is down to 610 DEG C, closing temperature-dropping fan makes wear-resistant liner casting naturally cool to surface temperature
It is 350 DEG C, at this point, closing the vibration device of vibration platform and reopening temperature-dropping fan, until wear-resistant liner casting is cold
But to room temperature；
3) by step 2), treated that wear-resistant liner casting is again loaded into heat-treatment furnace, carries out tempering, and described time
Specific step is as follows for fire processing:
It is tempered for the first time: being warming up to 170 DEG C with the heating rate control of 15 DEG C/min, keep the temperature 20 minutes；Again with 20 DEG C/
The heating rate control of min is warming up to 310 DEG C, keeps the temperature 25 minutes；400 are warming up to again with the heating rate control of 10 DEG C/min
DEG C, 240 minutes are kept the temperature, furnace cooling after insulating process；
Second of tempering: 180 DEG C are warming up to the heating rate control of 12 DEG C/min, keeps the temperature 25 minutes；Again with 18 DEG C/
The heating rate control of min is warming up to 320 DEG C, keeps the temperature 27 minutes；390 are warming up to again with the heating rate control of 13 DEG C/min
DEG C, 230 minutes are kept the temperature, furnace cooling after insulating process；
Third time is tempered: being warming up to 200 DEG C with the heating rate control of 17 DEG C/min, is kept the temperature 30 minutes；Again with 18 DEG C/
The heating rate control of min is warming up to 300 DEG C, keeps the temperature 35 minutes；400 DEG C are warming up to the heating rate control of 8 DEG C/min again,
Heat preservation 220 minutes, furnace cooling is after insulating process to get wear-resistant liner.
Embodiment 2
The weight percent of a kind of wear-resistant liner, each component is as follows: C:1.8%；Cr:11.0%；Si:0.5%；Mn:
9.0%；Mo:0.50%；B:0.8%；Ni:0.5%；Ti:0.20%；Zr:0.20%；Al:0.06%；V:0.20%；S:
0.03%；P:0.02%；W:0.4%；Nb:0.4%；Ta:0.08%；Cu:0.60%；Re:0.03%；Surplus is Fe and can not
The impurity avoided.
The casting method of the embodiment is the same as embodiment 1.
Embodiment 3
The weight percent of a kind of wear-resistant liner, each component is as follows: C:2.0%；Cr:12.0%；Si:0.6%；Mn:
10.0%；Mo:0.60%；B:0.9%；Ni:0.6%；Ti:0.30%；Zr:0.30%；Al:0.07%；V:0.30%；S:
0.04%；P:0.03%；W:0.5%；Nb:0.5%；Ta:0.09%；Cu:0.70%；Re:0.04%；Surplus is Fe and can not
The impurity avoided.
The casting method of the embodiment is the same as embodiment 1.
Embodiment 4
The weight percent of a kind of wear-resistant liner, each component is as follows: C:2.2%；Cr:13.0%；Si:0.7%；Mn:
11.0%；Mo:0.70%；B:1.0%；Ni:0.7%；Ti:0.40%；Zr:0.40%；Al:0.08%；V:0.40%；S:
0.05%；P:0.05%；W:0.6%；Nb:0.6%；Ta:0.10%；Cu:0.80%；Re:0.05%；Surplus is Fe and can not
The impurity avoided.
The casting method of the embodiment is the same as embodiment 1.
Embodiment 5
The weight percent of a kind of wear-resistant liner, each component is as follows: C:2.5%；Cr:14.0%；Si:0.8%；Mn:
12.0%；Mo:0.80%；B:1.2%；Ni:0.8%；Ti:0.50%；Zr:0.40%；Al:0.12%；V:0.40%；S:
0.06%；P:0.06%；W:0.8%；Nb:0.6%；Ta:0.12%；Cu:0.80%；Re:0.06%；Surplus is Fe and can not
The impurity avoided.
The casting method of the embodiment is the same as embodiment 1.
Wear-resistant liner hardness made from above-described embodiment is high, wear-resisting, high temperature resistant, while toughness is preferable, and impact resistance is good, this
Invention additionally provides the casting method of wear-resistant liner, and this method is advanced, comprising: Castiron Melting and casting, liner plate casting outlet with
Cleaning, liner plate heat treating castings and final inspection；Manufactured wear-resistant liner comprehensive mechanical property is excellent, long service life, has wide
Cost performance competitive space.
Claims (5)
1. a kind of wear-resistant liner, which is characterized in that the weight percent of its each component is as follows: C:1.5~2.5%；Cr:10.0~
14.0%；Si:0.4~0.8%；Mn:8.2~12.0%；Mo:0.40~0.80%；B:0.6~1.2%；Ni:0.4~
0.8%；Ti:0.10~0.50%；Zr:0.10~0.40%；Al:0.04~0.12%；V:0.10~0.40%；S:0.02~
0.06%；P:0.01~0.06%；W:0.2~0.8%；Nb:0.2~0.6%；Ta:0.06~0.12%；Cu:0.50~
0.80%；Re:0.02~0.06%；Surplus is Fe and inevitable impurity.
2. a kind of wear-resistant liner according to claim 1, which is characterized in that the weight percent of its each component is as follows: C:
1.8~2.2%；Cr:11.0~13.0%；Si:0.5~0.7%；Mn:9.0~11.0%；Mo:0.50~0.70%；B:0.8
~1.0%；Ni:0.5~0.7%；Ti:0.20~0.40%；Zr:0.20~0.40%；Al:0.06~0.08%；V:0.20
~0.40%；S:0.03~0.05%；P:0.02~0.05%；W:0.4~0.6%；Nb:0.4~0.6%；Ta:0.08~
0.10%；Cu:0.60~0.80%；Re:0.03~0.05%；Surplus is Fe and inevitable impurity.
3. a kind of wear-resistant liner according to claim 1 or 2, which is characterized in that the weight percent of its each component is as follows:
C:2.0%；Cr:12.0%；Si:0.6%；Mn:10.0%；Mo:0.60%；B:0.9%；Ni:0.6%；Ti:0.30%；Zr:
0.30%；Al:0.07%；V:0.30%；S:0.04%；P:0.03%；W:0.5%；Nb:0.5%；Ta:0.09%；Cu:
0.70%；Re:0.04%；Surplus is Fe and inevitable impurity.
4. a kind of casting method of wear-resistant liner, which comprises the following steps:
(1) material of sand mold the preparation of casting sand type: is manufactured by following material composition: casting model powder, furane resins and sulfonic acid solidification
Agent, in which: the weight of furane resins is the 1.0~1.5% of casting model powder weight, and the mass ratio of sulfonic acid curing agent and furane resins is
Casting model powder, furane resins and sulfonic acid curing agent are stirred 25~30min in stirrer for mixing up to moulding sand for casting by 1:4；It adopts
With the casting sand type of the moulding sand for casting production wear-resistant liner of above-mentioned preparation, 2h is stood after casting sand type finishing；After standing, casting
It makes and brushes the first coating on sand mold, which is made of Brown Alundum and alcohol, in which: Brown Alundum accounts for the first coating
Mass percent be 55%, the first coating with a thickness of 1.0~1.2mm, to first layer coating ignition sintering after brushing；
After first layer coating ignition sintering, casting sand type is purged with gas, and the second coating is brushed on casting sand type, this second
Coating is made of Brown Alundum and alcohol, in which: the mass percent that Brown Alundum accounts for the second coating is 35%, the second coating
With a thickness of 0.8~1.0mm, to second layer coating ignition sintering after brushing；After second layer coating ignition sintering, casting
Brushing release agent in sand mold；
(2) raw material is weighed by each component weight percent, electrosmelting of intermediate frequency is then added, carry out deoxidation treatment, until 1400~
1500 DEG C are come out of the stove, and molten iron is obtained；
(3) molten iron that step (2) obtains is cast into the type chamber of step (1) casting sand type, cast temperature is 1500~1600
DEG C, natural cooling 1.5h after casting unpacks after cooling and is cleared up casting to obtain wear-resistant liner casting；
(4) the wear-resistant liner casting obtained to step (3) is heat-treated, and process is as follows:
1) wear-resistant liner casting is fitted into heat-treatment furnace, is warming up to 200 DEG C with the heating rate control of 6 DEG C/min, heat preservation 160
Minute；350 DEG C are warming up to the heating rate control of 7 DEG C/min again, keeps the temperature 120 minutes；Again with the heating rate of 10 DEG C/min
Control is warming up to 610 DEG C, keeps the temperature 100 minutes；860 DEG C are warming up to the heating rate control of 6 DEG C/min again, keeps the temperature 80 minutes；
1018 DEG C are warming up to the heating rate control of 3 DEG C/min again, goes out heat-treatment furnace after heat preservation 250 minutes；
2) step 1) treated wear-resistant liner casting being subjected to wind quenching processe, wind quenching processe carries out in vibration platform,
Before wear-resistant liner casting is poured over vibration platform, vibration platform is opened, so that the vibration of vibration platform
Frequency is 16~18Hz, and the amplitude of vertical direction is 10~20cm, and opens simultaneously temperature-dropping fan and carry out wind quenching processe, when wear-resisting
When the surface temperature of liner plate casting is down to 610 DEG C, closing temperature-dropping fan makes wear-resistant liner casting naturally cool to surface temperature
350 DEG C, at this point, closing the vibration device of vibration platform and reopening temperature-dropping fan, until wear-resistant liner casting is cooling
To room temperature；
3) by step 2), treated that wear-resistant liner casting is again loaded into heat-treatment furnace, carries out tempering.
5. a kind of casting method of wear-resistant liner according to claim 4, which is characterized in that the tempering in step 3)
It is specific as follows:
It is tempered for the first time: being warming up to 170 DEG C with the heating rate control of 15 DEG C/min, keep the temperature 20 minutes；Again with 20 DEG C/min's
Heating rate control is warming up to 310 DEG C, keeps the temperature 25 minutes；400 DEG C are warming up to the heating rate control of 10 DEG C/min again, heat preservation
240 minutes, furnace cooling after insulating process；
Second of tempering: 180 DEG C are warming up to the heating rate control of 12 DEG C/min, keeps the temperature 25 minutes；Again with 18 DEG C/min's
Heating rate control is warming up to 320 DEG C, keeps the temperature 27 minutes；390 DEG C are warming up to the heating rate control of 13 DEG C/min again, heat preservation
230 minutes, furnace cooling after insulating process；
Third time is tempered: being warming up to 200 DEG C with the heating rate control of 17 DEG C/min, is kept the temperature 30 minutes；Again with 18 DEG C/min's
Heating rate control is warming up to 300 DEG C, keeps the temperature 35 minutes；400 DEG C are warming up to the heating rate control of 8 DEG C/min again, heat preservation
220 minutes, furnace cooling was after insulating process to get wear-resistant liner.
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