CN110653343A - Forging method of wear-resistant lining plate - Google Patents
Forging method of wear-resistant lining plate Download PDFInfo
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- CN110653343A CN110653343A CN201911030479.2A CN201911030479A CN110653343A CN 110653343 A CN110653343 A CN 110653343A CN 201911030479 A CN201911030479 A CN 201911030479A CN 110653343 A CN110653343 A CN 110653343A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
- B22C1/2233—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- B22C1/224—Furan polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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- Chemical Kinetics & Catalysis (AREA)
- Forging (AREA)
Abstract
A forging method of a wear-resistant lining plate comprises the following steps: preparing a forging sand mold; weighing the raw materials according to the weight percentage of each component, adding the raw materials into a medium-frequency electric furnace for smelting, carrying out deoxidation treatment, and discharging the molten iron at 1450-1480 ℃ to obtain molten iron; pouring the molten iron obtained in the step (2) into the cavity of the forging sand mold in the step (1), wherein the pouring temperature is 1500-1600 ℃, naturally cooling for 1.5h after the pouring is finished, opening the box after cooling, and cleaning the casting to obtain a wear-resistant lining plate casting; and carrying out heat treatment on the wear-resistant lining plate casting. The forging method is simple, low in cost, high in strength and toughness of the lining plate, and good in hardenability and hardenability.
Description
Technical Field
The invention belongs to the technical field of wear-resistant materials, and particularly relates to a forging method of a wear-resistant lining plate.
Background
The lining plate is used for protecting the cylinder body, so that the cylinder body is prevented from being directly impacted and abraded by the grinding body and materials, and meanwhile, the movement state of the grinding body can be adjusted by utilizing the lining plates in different forms, so that the grinding effect of the grinding body on the materials is enhanced, the grinding efficiency of the grinding machine is improved, the yield is increased, and the metal consumption is reduced. The existing wear-resistant cast steel lining plate has the technical problems of complex production process, short service life and poor use toughness.
Disclosure of Invention
The invention aims to provide a forging method of a wear-resistant lining plate, which is simple and low in cost, and the prepared lining plate is high in strength and toughness, good in hardenability and pollution-free.
The invention is realized by the following technical scheme:
a forging method of a wear-resistant lining plate comprises the following steps:
(1) preparation of a forging sand mold: the material for making the sand mold consists of: forging sand, furan resin and a sulfonic acid curing agent, wherein: the weight of the furan resin is 1.1-1.4% of the weight of the forging sand, and the mass ratio of the sulfonic acid curing agent to the furan resin is 1: 3, mixing and stirring the forging sand, furan resin and a sulfonic acid curing agent in a stirrer for 25-30 min to obtain molding sand for forging; manufacturing a forging sand mold of the wear-resistant lining plate by using the prepared molding sand for forging, and standing for 2.5 hours after finishing the forging sand mold; after standing, brushing a first layer of coating on the forging sand mold, wherein the first layer of coating consists of brown corundum and alcohol, and the first layer of coating comprises the following components in percentage by weight: the brown corundum accounts for 55 percent of the mass of the first layer of coating, the thickness of the first layer of coating is 1.1mm, and the first layer of coating is ignited and sintered after being coated; after the first layer of coating is ignited and sintered, blowing the forging sand mold by using gas, and coating a second layer of coating on the forging sand mold, wherein the second layer of coating consists of brown corundum and alcohol, and the following components in percentage by weight: the brown corundum accounts for 35 percent of the mass of the second layer of coating, the thickness of the second layer of coating is 0.9mm, and the second layer of coating is ignited and sintered after being coated; after the second layer of coating is ignited and sintered, a release agent is coated in the forged sand mold;
(2) weighing the raw materials according to the weight percentage of each component, adding the raw materials into a medium-frequency electric furnace for smelting, carrying out deoxidation treatment, and discharging the molten iron at 1450-1480 ℃ to obtain molten iron;
(3) pouring the molten iron obtained in the step (2) into the cavity of the forging sand mold in the step (1), wherein the pouring temperature is 1500-1600 ℃, naturally cooling for 1.5h after the pouring is finished, opening the box after cooling, and cleaning the casting to obtain a wear-resistant lining plate casting;
(4) carrying out heat treatment on the wear-resistant lining plate casting obtained in the step (3), wherein the process is as follows:
(4-1) putting the wear-resistant lining plate casting into a heat treatment furnace, controlling the temperature to rise to 200 ℃ at the temperature rise rate of 6 ℃/min, and keeping the temperature for 160 minutes; then the temperature is controlled to rise to 350 ℃ at the temperature rise rate of 7 ℃/min, and the temperature is kept for 120 minutes; then the temperature is controlled to rise to 610 ℃ at the temperature rise rate of 10 ℃/min, and the temperature is kept for 100 minutes; then the temperature is controlled to rise to 860 ℃ at the temperature rise rate of 6 ℃/min, and the temperature is kept for 80 minutes; then the temperature is controlled to rise to 1018 ℃ at the temperature rise rate of 3 ℃/min, and the temperature is preserved for 250 minutes and then the product is taken out of the heat treatment furnace;
(4-2) carrying out air quenching treatment on the wear-resistant lining plate casting processed in the step (4-1), wherein the air quenching treatment is carried out on a vibration working platform, before the wear-resistant lining plate casting is poured on the vibration working platform, the vibration working platform is opened to enable the vibration frequency of the vibration working platform to be 16-18 Hz and the amplitude in the vertical direction to be 10-20 cm, and meanwhile, a cooling fan is opened to carry out air quenching treatment, when the surface temperature of the wear-resistant lining plate casting is reduced to 610 ℃, the cooling fan is closed to enable the wear-resistant lining plate casting to be naturally cooled to 350 ℃, and at the moment, a vibration device of the vibration working platform is closed and the cooling fan is opened again until the lining plate of the wear-resistant casting is cooled to the normal temperature;
and (4-3) putting the wear-resistant lining plate casting processed in the step (4-2) into a heat treatment furnace again, and tempering.
2. The forging method of the wear-resistant lining plate as claimed in claim 1, wherein the tempering treatment in the step 3) is as follows:
tempering for the first time: controlling the temperature to 170 ℃ at the temperature rise rate of 15 ℃/min, and keeping the temperature for 20 minutes; then the temperature is controlled to rise to 310 ℃ at the temperature rise rate of 20 ℃/min, and the temperature is kept for 25 minutes; controlling the temperature to 400 ℃ at the heating rate of 10 ℃/min, preserving the heat for 240 minutes, and cooling along with the furnace after the heat preservation process is finished;
tempering for the second time: controlling the temperature to 180 ℃ at the temperature rising rate of 12 ℃/min, and keeping the temperature for 25 minutes; then the temperature is controlled to be raised to 320 ℃ at the temperature raising rate of 18 ℃/min, and the temperature is kept for 27 minutes; controlling the temperature to rise to 390 ℃ at the temperature rise rate of 13 ℃/min, preserving the heat for 230 minutes, and cooling along with the furnace after the heat preservation process is finished;
tempering for the third time: controlling the temperature to 200 ℃ at the temperature rise rate of 17 ℃/min, and keeping the temperature for 30 minutes; then the temperature is controlled to be increased to 300 ℃ at the temperature increasing rate of 18 ℃/min, and the temperature is kept for 35 minutes; and controlling the temperature to 400 ℃ at the temperature rise rate of 8 ℃/min, preserving the heat for 220 minutes, and cooling along with the furnace after the heat preservation process is finished to obtain the wear-resistant lining plate.
Preferably, the wear-resistant lining plate comprises the following components in percentage by weight: c: 3.0-5.1%; cr: 8.0-10.0%; si: 0.6-1.2%; mn: 10.3-12.5%; mo: 0.30-0.50%; b: 0.4-2.0%; ni: 0.2-0.6%; ti: 0.05-0.15%; rare earth: 0.14-0.28%; al: 0.02-0.16%; v: 0.10-0.30%; s: 0.01-0.05%; p: 0.03-0.06%; w: 0.1-0.5%; nb: 0.2-0.5%; ta: 0.04-0.10%; the balance being Fe and unavoidable impurities.
Preferably, the wear-resistant lining plate comprises the following components in percentage by weight: c: 4.0-4.5%; cr: 8.5-9.5%; si: 0.7-1.0%; mn: 10.5-12.0%; mo: 0.35-0.45%; b: 1.0-1.4%; ni: 0.3-0.5%; ti: 0.10-0.14%; rare earth: 0.15-0.20%; al: 0.08-0.10%; v: 0.15-0.25%; s: 0.02-0.04%; p: 0.04-0.06%; w: 0.2-0.4%; nb: 0.3-0.5%; ta: 0.06-0.10%; the balance being Fe and unavoidable impurities.
Preferably, the wear-resistant lining plate comprises the following components in percentage by weight: c: 4.2 percent; cr: 9.0 percent; si: 0.8 percent; mn: 11.5 percent; mo: 0.40 percent; b: 1.2 percent; ni: 0.4 percent; ti: 0.12 percent; rare earth: 0.18 percent; al: 0.09%; v: 0.20 percent; s: 0.03 percent; p: 0.05 percent; w: 0.3 percent; nb: 0.4 percent; ta: 0.08 percent; the balance being Fe and unavoidable impurities.
The invention provides a forging method of a wear-resistant lining plate, the wear-resistant lining plate prepared by the method has high hardness, wear resistance, high temperature resistance, good toughness and good impact resistance, and the forging method of the wear-resistant lining plate is advanced and comprises the following steps: smelting and pouring cast iron, taking out and cleaning a lining plate casting, and carrying out heat treatment and final inspection on the lining plate casting; the prepared wear-resistant lining plate has excellent comprehensive mechanical property, long service life and wide cost performance competition space.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
A wear-resistant lining board comprises the following components in percentage by weight: c: 3.0 percent; cr: 8.0 percent; si: 0.6 percent; mn: 10.3 percent; mo: 0.30 percent; b: 0.4 percent; ni: 0.2 percent; ti: 0.05 percent; rare earth: 0.14 percent; al: 0.02 percent; v: 0.10 percent; s: 0.01 percent; p: 0.03 percent; w: 0.1 percent; nb: 0.2 percent; ta: 0.04 percent; the balance being Fe and unavoidable impurities.
A forging method of a wear-resistant lining plate comprises the following steps:
(1) preparation of a forging sand mold: the material for making the sand mold consists of: forging sand, furan resin and a sulfonic acid curing agent, wherein: the weight of the furan resin is 1.1-1.4% of the weight of the forging sand, and the mass ratio of the sulfonic acid curing agent to the furan resin is 1: 3, mixing and stirring the forging sand, furan resin and a sulfonic acid curing agent in a stirrer for 25-30 min to obtain molding sand for forging; manufacturing a forging sand mold of the wear-resistant lining plate by using the prepared molding sand for forging, and standing for 2.5 hours after finishing the forging sand mold; after standing, brushing a first layer of coating on the forging sand mold, wherein the first layer of coating consists of brown corundum and alcohol, and the first layer of coating comprises the following components in percentage by weight: the brown corundum accounts for 55 percent of the mass of the first layer of coating, the thickness of the first layer of coating is 1.1mm, and the first layer of coating is ignited and sintered after being coated; after the first layer of coating is ignited and sintered, blowing the forging sand mold by using gas, and coating a second layer of coating on the forging sand mold, wherein the second layer of coating consists of brown corundum and alcohol, and the following components in percentage by weight: the brown corundum accounts for 35 percent of the mass of the second layer of coating, the thickness of the second layer of coating is 0.9mm, and the second layer of coating is ignited and sintered after being coated; after the second layer of coating is ignited and sintered, a release agent is coated in the forged sand mold;
(2) weighing the raw materials according to the weight percentage of each component, adding the raw materials into a medium-frequency electric furnace for smelting, carrying out deoxidation treatment, and discharging the molten iron at 1450-1480 ℃ to obtain molten iron;
(3) pouring the molten iron obtained in the step (2) into the cavity of the forging sand mold in the step (1), wherein the pouring temperature is 1500-1600 ℃, naturally cooling for 1.5h after the pouring is finished, opening the box after cooling, and cleaning the casting to obtain a wear-resistant lining plate casting;
(4) carrying out heat treatment on the wear-resistant lining plate casting obtained in the step (3), wherein the process is as follows:
(4-1) putting the wear-resistant lining plate casting into a heat treatment furnace, controlling the temperature to rise to 200 ℃ at the temperature rise rate of 6 ℃/min, and keeping the temperature for 160 minutes; then the temperature is controlled to rise to 350 ℃ at the temperature rise rate of 7 ℃/min, and the temperature is kept for 120 minutes; then the temperature is controlled to rise to 610 ℃ at the temperature rise rate of 10 ℃/min, and the temperature is kept for 100 minutes; then the temperature is controlled to rise to 860 ℃ at the temperature rise rate of 6 ℃/min, and the temperature is kept for 80 minutes; then the temperature is controlled to rise to 1018 ℃ at the temperature rise rate of 3 ℃/min, and the temperature is preserved for 250 minutes and then the product is taken out of the heat treatment furnace;
(4-2) carrying out air quenching treatment on the wear-resistant lining plate casting processed in the step (4-1), wherein the air quenching treatment is carried out on a vibration working platform, before the wear-resistant lining plate casting is poured on the vibration working platform, the vibration working platform is opened to enable the vibration frequency of the vibration working platform to be 16-18 Hz and the amplitude in the vertical direction to be 10-20 cm, and meanwhile, a cooling fan is opened to carry out air quenching treatment, when the surface temperature of the wear-resistant lining plate casting is reduced to 610 ℃, the cooling fan is closed to enable the wear-resistant lining plate casting to be naturally cooled to 350 ℃, and at the moment, a vibration device of the vibration working platform is closed and the cooling fan is opened again until the lining plate of the wear-resistant casting is cooled to the normal temperature;
(4-3) putting the wear-resistant lining plate casting processed in the step (4-2) into a heat treatment furnace again for tempering treatment, wherein the tempering treatment specifically comprises the following steps:
tempering for the first time: controlling the temperature to 170 ℃ at the temperature rise rate of 15 ℃/min, and keeping the temperature for 20 minutes; then the temperature is controlled to rise to 310 ℃ at the temperature rise rate of 20 ℃/min, and the temperature is kept for 25 minutes; controlling the temperature to 400 ℃ at the heating rate of 10 ℃/min, preserving the heat for 240 minutes, and cooling along with the furnace after the heat preservation process is finished;
tempering for the second time: controlling the temperature to 180 ℃ at the temperature rising rate of 12 ℃/min, and keeping the temperature for 25 minutes; then the temperature is controlled to be raised to 320 ℃ at the temperature raising rate of 18 ℃/min, and the temperature is kept for 27 minutes; controlling the temperature to rise to 390 ℃ at the temperature rise rate of 13 ℃/min, preserving the heat for 230 minutes, and cooling along with the furnace after the heat preservation process is finished;
tempering for the third time: controlling the temperature to 200 ℃ at the temperature rise rate of 17 ℃/min, and keeping the temperature for 30 minutes; then the temperature is controlled to be increased to 300 ℃ at the temperature increasing rate of 18 ℃/min, and the temperature is kept for 35 minutes; and controlling the temperature to 400 ℃ at the temperature rise rate of 8 ℃/min, preserving the heat for 220 minutes, and cooling along with the furnace after the heat preservation process is finished to obtain the wear-resistant lining plate.
Example 2
C: 4.0 percent; cr: 8.5 percent; si: 0.7 percent; mn: 10.5 percent; mo: 0.35 percent; b: 1.0 percent; ni: 0.3 percent; ti: 0.10 percent; rare earth: 0.15 percent; al: 0.08 percent; v: 0.15 percent; s: 0.02 percent; p: 0.04 percent; w: 0.2 percent; nb: 0.3 percent; ta: 0.06 percent; the balance being Fe and unavoidable impurities.
The forging method of this example is the same as example 1.
Example 3
A wear-resistant lining board comprises the following components in percentage by weight: c: 4.2 percent; cr: 9.0 percent; si: 0.8 percent; mn: 11.5 percent; mo: 0.40 percent; b: 1.2 percent; ni: 0.4 percent; ti: 0.12 percent; rare earth: 0.18 percent; al: 0.09%; v: 0.20 percent; s: 0.03 percent; p: 0.05 percent; w: 0.3 percent; nb: 0.4 percent; ta: 0.08 percent; the balance being Fe and unavoidable impurities.
The forging method of this example is the same as example 1.
Example 4
A wear-resistant lining board comprises the following components in percentage by weight: c: 4.5 percent; cr: 9.5 percent; si: 1.0 percent; mn: 12.0 percent; mo: 0.45 percent; b: 1.4 percent; ni: 0.5 percent; ti: 0.14 percent; rare earth: 0.20 percent; al: 0.10 percent; v: 0.25 percent; s: 0.04 percent; p: 0.06 percent; w: 0.4 percent; nb: 0.5 percent; ta: 0.10 percent; the balance being Fe and unavoidable impurities.
The forging method of this example is the same as example 1.
Example 5
A wear-resistant lining board comprises the following components in percentage by weight: c: 5.1 percent; cr: 10.0 percent; si: 1.2 percent; mn: 12.5 percent; mo: 0.50 percent; b: 2.0 percent; ni: 0.6 percent; ti: 0.15 percent; rare earth: 0.28 percent; al: 0.16 percent; v: 0.30 percent; s: 0.05 percent; p: 0.06 percent; w: 0.5 percent; nb: 0.5 percent; ta: 0.10 percent; the balance being Fe and unavoidable impurities.
The forging method of this example is the same as example 1.
The wear-resistant lining plate prepared by the embodiment has high hardness, wear resistance, high temperature resistance, good toughness and good impact resistance, and the invention also provides a forging method of the wear-resistant lining plate, which is advanced and comprises the following steps: smelting and pouring cast iron, taking out and cleaning a lining plate casting, and carrying out heat treatment and final inspection on the lining plate casting; the prepared wear-resistant lining plate has excellent comprehensive mechanical property, long service life and wide cost performance competition space.
Claims (5)
1. The forging method of the wear-resistant lining plate is characterized by comprising the following steps of:
(1) preparation of a forging sand mold: the material for making the sand mold consists of: forging sand, furan resin and a sulfonic acid curing agent, wherein: the weight of the furan resin is 1.1-1.4% of the weight of the forging sand, and the mass ratio of the sulfonic acid curing agent to the furan resin is 1: 3, mixing and stirring the forging sand, furan resin and a sulfonic acid curing agent in a stirrer for 25-30 min to obtain molding sand for forging; manufacturing a forging sand mold of the wear-resistant lining plate by using the prepared molding sand for forging, and standing for 2.5 hours after finishing the forging sand mold; after standing, brushing a first layer of coating on the forging sand mold, wherein the first layer of coating consists of brown corundum and alcohol, and the first layer of coating comprises the following components in percentage by weight: the brown corundum accounts for 55 percent of the mass of the first layer of coating, the thickness of the first layer of coating is 1.1mm, and the first layer of coating is ignited and sintered after being coated; after the first layer of coating is ignited and sintered, blowing the forging sand mold by using gas, and coating a second layer of coating on the forging sand mold, wherein the second layer of coating consists of brown corundum and alcohol, and the following components in percentage by weight: the brown corundum accounts for 35 percent of the mass of the second layer of coating, the thickness of the second layer of coating is 0.9mm, and the second layer of coating is ignited and sintered after being coated; after the second layer of coating is ignited and sintered, a release agent is coated in the forged sand mold;
(2) weighing the raw materials according to the weight percentage of each component, adding the raw materials into a medium-frequency electric furnace for smelting, carrying out deoxidation treatment, and discharging the molten iron at 1450-1480 ℃ to obtain molten iron;
(3) pouring the molten iron obtained in the step (2) into the cavity of the forging sand mold in the step (1), wherein the pouring temperature is 1500-1600 ℃, naturally cooling for 1.5h after the pouring is finished, opening the box after cooling, and cleaning the casting to obtain a wear-resistant lining plate casting;
(4) carrying out heat treatment on the wear-resistant lining plate casting obtained in the step (3), wherein the process is as follows:
(4-1) putting the wear-resistant lining plate casting into a heat treatment furnace, controlling the temperature to rise to 200 ℃ at the temperature rise rate of 6 ℃/min, and keeping the temperature for 160 minutes; then the temperature is controlled to rise to 350 ℃ at the temperature rise rate of 7 ℃/min, and the temperature is kept for 120 minutes; then the temperature is controlled to rise to 610 ℃ at the temperature rise rate of 10 ℃/min, and the temperature is kept for 100 minutes; then the temperature is controlled to rise to 860 ℃ at the temperature rise rate of 6 ℃/min, and the temperature is kept for 80 minutes; then the temperature is controlled to rise to 1018 ℃ at the temperature rise rate of 3 ℃/min, and the temperature is preserved for 250 minutes and then the product is taken out of the heat treatment furnace;
(4-2) carrying out air quenching treatment on the wear-resistant lining plate casting processed in the step (4-1), wherein the air quenching treatment is carried out on a vibration working platform, before the wear-resistant lining plate casting is poured on the vibration working platform, the vibration working platform is opened to enable the vibration frequency of the vibration working platform to be 16-18 Hz and the amplitude in the vertical direction to be 10-20 cm, and meanwhile, a cooling fan is opened to carry out air quenching treatment, when the surface temperature of the wear-resistant lining plate casting is reduced to 610 ℃, the cooling fan is closed to enable the wear-resistant lining plate casting to be naturally cooled to 350 ℃, and at the moment, a vibration device of the vibration working platform is closed and the cooling fan is opened again until the lining plate of the wear-resistant casting is cooled to the normal temperature;
and (4-3) putting the wear-resistant lining plate casting processed in the step (4-2) into a heat treatment furnace again, and tempering.
2. The forging method of the wear-resistant lining plate as claimed in claim 1, wherein the tempering treatment in the step 3) is as follows:
tempering for the first time: controlling the temperature to 170 ℃ at the temperature rise rate of 15 ℃/min, and keeping the temperature for 20 minutes; then the temperature is controlled to rise to 310 ℃ at the temperature rise rate of 20 ℃/min, and the temperature is kept for 25 minutes; controlling the temperature to 400 ℃ at the heating rate of 10 ℃/min, preserving the heat for 240 minutes, and cooling along with the furnace after the heat preservation process is finished;
tempering for the second time: controlling the temperature to 180 ℃ at the temperature rising rate of 12 ℃/min, and keeping the temperature for 25 minutes; then the temperature is controlled to be raised to 320 ℃ at the temperature raising rate of 18 ℃/min, and the temperature is kept for 27 minutes; controlling the temperature to rise to 390 ℃ at the temperature rise rate of 13 ℃/min, preserving the heat for 230 minutes, and cooling along with the furnace after the heat preservation process is finished;
tempering for the third time: controlling the temperature to 200 ℃ at the temperature rise rate of 17 ℃/min, and keeping the temperature for 30 minutes; then the temperature is controlled to be increased to 300 ℃ at the temperature increasing rate of 18 ℃/min, and the temperature is kept for 35 minutes; and controlling the temperature to 400 ℃ at the temperature rise rate of 8 ℃/min, preserving the heat for 220 minutes, and cooling along with the furnace after the heat preservation process is finished to obtain the wear-resistant lining plate.
3. The forging method of the wear-resistant lining plate as claimed in claim 1 or 2, wherein the wear-resistant lining plate comprises the following components in percentage by weight: c: 3.0-5.1%; cr: 8.0-10.0%; si: 0.6-1.2%; mn: 10.3-12.5%; mo: 0.30-0.50%; b: 0.4-2.0%; ni: 0.2-0.6%; ti: 0.05-0.15%; rare earth: 0.14-0.28%; al: 0.02-0.16%; v: 0.10-0.30%; s: 0.01-0.05%; p: 0.03-0.06%; w: 0.1-0.5%; nb: 0.2-0.5%; ta: 0.04-0.10%; the balance being Fe and unavoidable impurities.
4. The forging method of the wear-resistant lining plate as claimed in claim 3, wherein the weight percentages of the components of the wear-resistant lining plate are as follows: c: 4.0-4.5%; cr: 8.5-9.5%; si: 0.7-1.0%; mn: 10.5-12.0%; mo: 0.35-0.45%; b: 1.0-1.4%; ni: 0.3-0.5%; ti: 0.10-0.14%; rare earth: 0.15-0.20%; al: 0.08-0.10%; v: 0.15-0.25%; s: 0.02-0.04%; p: 0.04-0.06%; w: 0.2-0.4%; nb: 0.3-0.5%; ta: 0.06-0.10%; the balance being Fe and unavoidable impurities.
5. The forging method of the wear-resistant lining plate as claimed in claim 4, wherein the weight percentages of the components of the wear-resistant lining plate are as follows: c: 4.2 percent; cr: 9.0 percent; si: 0.8 percent; mn: 11.5 percent; mo: 0.40 percent; b: 1.2 percent; ni: 0.4 percent; ti: 0.12 percent; rare earth: 0.18 percent; al: 0.09%; v: 0.20 percent; s: 0.03 percent; p: 0.05 percent; w: 0.3 percent; nb: 0.4 percent; ta: 0.08 percent; the balance being Fe and unavoidable impurities.
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| CN201911030479.2A CN110653343A (en) | 2019-10-28 | 2019-10-28 | Forging method of wear-resistant lining plate |
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| CN201911030479.2A Pending CN110653343A (en) | 2019-10-28 | 2019-10-28 | Forging method of wear-resistant lining plate |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639357A (en) * | 2013-12-25 | 2014-03-19 | 马鞍山市盛磊耐磨合金制造有限公司 | Preparation method of bowl milling liner plate of coal mill |
| CN103710615A (en) * | 2013-12-25 | 2014-04-09 | 马鞍山市盛磊耐磨合金制造有限公司 | Preparation method of wear-resistant lining board |
| CN110093560A (en) * | 2019-04-30 | 2019-08-06 | 徐州天太机械制造有限公司 | A kind of wear-resistant liner and its casting method |
| CN110106434A (en) * | 2019-04-30 | 2019-08-09 | 徐州天太机械制造有限公司 | A kind of wear resistant cast iron steel ball and preparation method thereof |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639357A (en) * | 2013-12-25 | 2014-03-19 | 马鞍山市盛磊耐磨合金制造有限公司 | Preparation method of bowl milling liner plate of coal mill |
| CN103710615A (en) * | 2013-12-25 | 2014-04-09 | 马鞍山市盛磊耐磨合金制造有限公司 | Preparation method of wear-resistant lining board |
| CN110093560A (en) * | 2019-04-30 | 2019-08-06 | 徐州天太机械制造有限公司 | A kind of wear-resistant liner and its casting method |
| CN110106434A (en) * | 2019-04-30 | 2019-08-09 | 徐州天太机械制造有限公司 | A kind of wear resistant cast iron steel ball and preparation method thereof |
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