CN105483527A - Steel used for liner plate, liner plate and preparation method of liner plate - Google Patents

Steel used for liner plate, liner plate and preparation method of liner plate Download PDF

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Publication number
CN105483527A
CN105483527A CN201610065749.3A CN201610065749A CN105483527A CN 105483527 A CN105483527 A CN 105483527A CN 201610065749 A CN201610065749 A CN 201610065749A CN 105483527 A CN105483527 A CN 105483527A
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liner plate
steel
obtains
plate
finishing
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CN201610065749.3A
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Chinese (zh)
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CN105483527B (en
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侯宇岷
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山东华民钢球股份有限公司
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/008Martensite

Abstract

The invention discloses steel used for a liner plate. The steel is prepared from, by weight, 0.2-0.45% of C, 0.2-0.5% of Si, 1.0-1.5% of Mn, 0.2-0.6% of Cr, 0.1-0.3% of Mo, 0.001-0.003% of Nb, 0.1-0.3% of V, 0.01-0.05% of Ti and the balance Fe and inevitable impurities. Hardness and tenacity of the material used for the liner plate are basically taken into consideration at the same time, and therefore the wear resistance and the impact resistance of the liner plate are improved, and the service life of the liner plate is prolonged. The invention further provides the liner plate made from the steel. The invention further provides a preparation method of the liner plate.

Description

A kind of liner plate steel, liner plate and preparation method thereof
Technical field
The present invention relates to lining material technical field, especially relate to a kind of liner plate steel, liner plate and preparation method thereof.
Background technology
In the industrial trades such as metallurgy, mine, electric power, building materials, the fragmentation, grinding, conveying etc. of material, all will use a large amount of liner plates, liner plate subjects wearing and tearing in various degree and impact, causes the work-ing life of liner plate shorter, changes frequent, consumption is very big, is main consumable accessory.Current every profession and trade liner material quality used mainly contains high mangaenese steel, Low Alloying Multicomponent Steels, Cr series white cast iron etc.
According to above-mentioned, liner plate is main taking up wear and impact in use, and in order to meet the service requirements of liner plate, liner plate needs to have certain hardness, to make liner plate have stronger wear resistance, and the wearing and tearing in opposing use procedure; Liner plate also needs to have certain toughness, to make liner plate have stronger shock resistance, and the impact in opposing use procedure.According to materialogy principle, the hardness of liner plate and toughness are two conflicting performances, and hardness is high, then toughness is unlikely higher; Toughness is high, then hardness is unlikely higher.In order to improve the work-ing life of liner plate, industry technology personnel have carried out large quantifier elimination.But at present to the research of liner plate, most object improves the hardness of liner material quality, to improve the wear resistance of liner plate, and little to the research of liner plate toughness, to the researches that the balance of liner plate hardness and toughness is taken into account.
Therefore, how providing a kind of hardness and toughness can balance the liner plate material taken into account, is the technical problem that current those skilled in the art need solution badly to improve the work-ing life of liner plate.
Summary of the invention
The object of this invention is to provide a kind of liner plate steel, this liner plate steel has the hardness and toughness that balance and take into account, can improve the work-ing life of liner plate.Another object of the present invention is to provide the liner plate that a kind of material is above-mentioned liner plate steel.Another object of the present invention is to provide a kind of preparation method of above-mentioned liner plate.
For solving above-mentioned technical problem, technical scheme provided by the invention is:
A kind of liner plate steel, comprises the component of following weight percent: the C of 0.2% ~ 0.45%; The Si of 0.2% ~ 0.5%; The Mn of 1.0% ~ 1.5%; The Cr of 0.2% ~ 0.6%; The Mo of 0.1% ~ 0.3%; The Nb of 0.001% ~ 0.003%; The V of 0.1% ~ 0.3%; The Ti of 0.01% ~ 0.05%, all the other are Fe and inevitable impurity.
Preferably, the weight percent of described Mn is 1.1% ~ 1.4%.
Preferably, the weight percent of described Cr is 0.2% ~ 0.5%.
Preferably, the weight percent of described Mo is 0.15% ~ 0.25%.
Preferably, the weight percent of described Nb is 0.0015% ~ 0.0025%.
Preferably, the weight percent of described V is 0.15% ~ 0.25%.
Preferably, the weight percent of described Ti is 0.015% ~ 0.045%.
Compared with prior art, the invention provides a kind of liner plate steel, the present invention is by the control of element kind and content in the liner plate steel prepared needed for liner plate and optimization, liner plate steel provided by the invention is made also to have higher toughness under the prerequisite with certain hardness, substantially the balance achieving hardness and toughness in liner plate material is taken into account, after this liner plate steel is shaping, after heat treatment hardness can reach 55 ~ 60HRC again, impelling strength ak >=20J/cm2, interior tissue is hardenite and lath martensite, Ac1 line is 730 DEG C ~ 750 DEG C, Ac3 line is 760 DEG C ~ 780 DEG C, improve liner plate wear resistance in use and shock resistance, and by the stable performance of the standby liner plate of this liner plate steel, in use there is no structural transformation, not distortion, thus improve the work-ing life of liner plate.
The present invention also provides a kind of liner plate, and described liner plate is liner plate steel described in above-mentioned any one.
The present invention also provides a kind of preparation method of above-mentioned liner plate, comprises the following steps:
1) make steel: obtain through steel-making the steel billet that chemical composition is consistent with target liner plate, described steel billet comprises the component of following weight percent: the C of 0.2% ~ 0.45%; The Si of 0.2% ~ 0.5%; The Mn of 1.0% ~ 1.5%; The Cr of 0.2% ~ 0.6%; The Mo of 0.1% ~ 0.3%; The Nb of 0.001% ~ 0.003%; The V of 0.1% ~ 0.3%; The Ti of 0.01% ~ 0.05%, all the other are Fe and inevitable impurity;
2) steel rolling: by step 1) steel billet that obtains obtains thickness through steel rolling and matches and corresponding steel plate with target liner plate thickness;
3) anneal: by step 2) steel plate that obtains carries out Full Annealing, Heating temperature 780 DEG C ~ 800 DEG C, and insulation 3h ~ 5h, is cooled to room temperature in stove;
4) base: by step 3) steel plate that obtains cuts into the forging stock that the distortion of target liner plate needs size;
5) forging: by step 4) forging stock that obtains is heated to 950 DEG C ~ 1000 DEG C, and then the forging stock after heating is forged into forging mold the shape that target liner plate has, obtains liner plate work in-process;
6) finishing: by step 5) the liner plate work in-process that obtain carry out finishing process after forging, and described finishing process comprises removes overlap and reconditioning profile;
7) quenching: by step 6) liner plate work in-process after finishing are heated to 850 DEG C ~ 880 DEG C and carry out quench treatment, cool time and liner plate thickness matching;
8) tempering: by step 7) the liner plate work in-process that obtain after quench treatment carry out temper, and Heating temperature 200 DEG C ~ 220 DEG C, soaking time and liner plate thickness matching, obtain liner plate finished product.
The present invention also provides a kind of preparation method of above-mentioned liner plate, comprises the following steps:
1) make steel: obtain through steel-making the steel billet that chemical composition is consistent with target liner plate, described steel billet comprises the component of following weight percent: the C of 0.2% ~ 0.45%; The Si of 0.2% ~ 0.5%; The Mn of 1.0% ~ 1.5%; The Cr of 0.2% ~ 0.6%; The Mo of 0.1% ~ 0.3%; The Nb of 0.001% ~ 0.003%; The V of 0.1% ~ 0.3%; The Ti of 0.01% ~ 0.05%, all the other are Fe and inevitable impurity;
2) steel rolling: by step 1) steel billet that obtains obtains thickness through steel rolling and matches and corresponding steel plate with target liner plate thickness;
3) anneal: by step 2) steel plate that obtains carries out Full Annealing, Heating temperature 780 DEG C ~ 800 DEG C, and insulation 3h ~ 5h, is cooled to room temperature in stove;
4) base: by step 3) steel plate that obtains cuts into the stamping strip that the distortion of target liner plate needs size;
5) punching press: by step 4) stamping strip that obtains strikes out the shape and size that target liner plate has, and obtains liner plate work in-process;
6) finishing: by step 5) the liner plate work in-process that obtain carry out finishing process after forging, and described finishing process comprises removes overlap and reconditioning profile;
7) quenching: by step 6) liner plate work in-process after finishing are heated to 850 DEG C ~ 880 DEG C and carry out quench treatment, cool time and liner plate thickness matching;
8) tempering: by step 7) the liner plate work in-process that obtain after quench treatment carry out temper, and Heating temperature 200 DEG C ~ 220 DEG C, soaking time and liner plate thickness matching, obtain liner plate finished product.
Compared with prior art, the invention provides the preparation method of two kinds of liner plates, because this preparation method uses above-mentioned liner plate steel as starting material to make liner plate, because this liner plate steel raw material has hardness and toughness, excellent combination, and there is forging property technique, therefore make the present invention that hot method for forging and molding or cold conditions impact forming method can be adopted to carry out machine-shaping to steel plate, be the liner plate work in-process with target liner plate shape by steel plate machine-shaping, make to prepare liner plate without the need to adopting traditional casting and molding method again, overcome a series of bad shortcoming that original castmethod has, reduce production cost, decrease resource and energy consumption, decrease environmental pollution, and adopt the liner plate that hot method for forging and molding or cold conditions impact forming method obtain, compared to casting and molding method, it organizes finer and close, crystal grain is more tiny, the performance at each position is more even, technique simplifies more.To sum up, the present invention is in the liner plate steel that optimized fabrication liner plate is used on the kind of element and the basis of content, further the preparation method of liner plate is improved, make full use of the feature that this liner plate steel has higher toughness, hot method for forging and molding or cold conditions impact forming method is adopted to carry out machine-shaping to steel plate, element strengthening and process strengthening match, and further increase wear resistance and the shock resistance of obtained liner plate, further increase the work-ing life of liner plate.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these descriptions just further illustrate feature of the present invention and advantage, instead of limiting to the claimed invention.
The invention provides a kind of liner plate steel, comprise the component of following weight percent: the C of 0.2% ~ 0.45%; The Si of 0.2% ~ 0.5%; The Mn of 1.0% ~ 1.5%; The Cr of 0.2% ~ 0.6%; The Mo of 0.1% ~ 0.3%; The Nb of 0.001% ~ 0.003%; The V of 0.1% ~ 0.3%; The Ti of 0.01% ~ 0.05%, all the other are Fe and inevitable impurity.
The present invention with the addition of C element in liner plate steel, C element has a significant impact for the hardness of liner plate steel, when C content is greater than 0.5%, although the hardness of liner plate steel can be improved, but this C content can cause producing a large amount of carbide amounts in liner plate steel, due to the existence of this large amount of carbide, liner plate is caused in use easily to produce brittle rupture.In order to obtain the liner plate steel that a kind of hardness and tough sexual balance are taken into account, and make the interior tissue of this liner plate steel be hardenite and lath martensite, the weight percent of C element described in the present invention is 0.2% ~ 0.45%, be preferably 0.25% ~ 0.40%, be more preferably 0.30% ~ 0.40%.
The present invention with the addition of Mn, Cr, Mo element in liner plate steel, and these three kinds of elements can improve the hardening capacity of liner plate steel, make it have higher hardness.Cr can also improve the electropotential of liner plate steel, improves the erosion resistance of liner plate in wet-milling process.Therefore, the weight percent of the element of Mn described in the present invention is 1.0% ~ 1.5%, is preferably 1.1% ~ 1.4%, is more preferably 1.15% ~ 1.35%, is more preferably 1.2% ~ 1.3%; The weight percent of the element of Cr described in the present invention is 0.2% ~ 0.6%, is preferably 0.2% ~ 0.5%, is more preferably 0.25% ~ 0.45%, is more preferably 0.30% ~ 0.40%; The weight percent of the element of Mo described in the present invention is 0.1% ~ 0.3%, is preferably 0.15% ~ 0.25%.
The present invention with the addition of Nb, V, Ti element in liner plate steel, and these three kinds of elements are all in order to crystal grain thinning, increases the toughness of liner plate steel.Therefore, the weight percent of the element of Nb described in the present invention is 0.001% ~ 0.003%, is preferably 0.0015% ~ 0.0025%; The weight percent of V element described in the present invention is 0.1% ~ 0.3%, is preferably 0.15% ~ 0.25%; The weight percent of the element of Ti described in the present invention is 0.01% ~ 0.05%, is preferably 0.015% ~ 0.045%, is more preferably 0.02% ~ 0.04%, is more preferably 0.025% ~ 0.035%.
The invention provides a kind of liner plate steel, the present invention is by the control of element kind and content in the liner plate steel prepared needed for liner plate and optimization, liner plate steel provided by the invention is made also to have higher toughness under the prerequisite with certain hardness, substantially the excellent combination of hardness and toughness in liner plate material is achieved, after this liner plate steel is shaping, after heat treatment hardness can reach 55 ~ 60HRC again, impelling strength ak>=20J/cm 2interior tissue is hardenite and lath martensite, Ac1 line is 730 DEG C ~ 750 DEG C, Ac3 line is 760 DEG C ~ 780 DEG C, improve liner plate wear resistance in use and shock resistance, and by the stable performance of the standby liner plate of this liner plate steel, in use there is no structural transformation, not distortion, thus improve the work-ing life of liner plate.
Present invention also offers a kind of liner plate, described liner plate is liner plate steel described in above-mentioned any one.
The material of liner plate provided by the invention is the liner plate steel described in above-mentioned any one, be prepared from by the liner plate steel described in above-mentioned any one, therefore, it also has higher toughness equally under the prerequisite with certain hardness, and the balance substantially achieving hardness and toughness in liner plate is taken into account, and improves liner plate wear resistance in use and shock resistance, and the stable performance of this liner plate, in use there is no structural transformation, not distortion, thus improve the work-ing life of liner plate.
Present invention also offers a kind of preparation method of liner plate, comprise the following steps:
1) make steel: obtain through steel-making the steel billet that chemical composition is consistent with target liner plate, described steel billet comprises the component of following weight percent: the C of 0.2% ~ 0.45%; The Si of 0.2% ~ 0.5%; The Mn of 1.0% ~ 1.5%; The Cr of 0.2% ~ 0.6%; The Mo of 0.1% ~ 0.3%; The Nb of 0.001% ~ 0.003%; The V of 0.1% ~ 0.3%; The Ti of 0.01% ~ 0.05%, all the other are Fe and inevitable impurity;
2) steel rolling: by step 1) steel billet that obtains obtains thickness through steel rolling and matches and corresponding steel plate with target liner plate thickness;
3) anneal: by step 2) steel plate that obtains carries out Full Annealing, Heating temperature 780 DEG C ~ 800 DEG C, and insulation 3h ~ 5h, is cooled to room temperature in stove;
4) base: by step 3) steel plate that obtains cuts into the forging stock that the distortion of target liner plate needs size;
5) forging: by step 4) forging stock that obtains is heated to 950 DEG C ~ 1000 DEG C, and then the forging stock after heating is forged into forging mold the shape that target liner plate has, obtains liner plate work in-process;
6) finishing: by step 5) the liner plate work in-process that obtain carry out finishing process after forging, and described finishing process comprises removes overlap and reconditioning profile;
7) quenching: by step 6) liner plate work in-process after finishing are heated to 850 DEG C ~ 880 DEG C and carry out quench treatment, cool time and liner plate thickness matching;
8) tempering: by step 7) the liner plate work in-process that obtain after quench treatment carry out temper, and Heating temperature 200 DEG C ~ 220 DEG C, soaking time and liner plate thickness matching, obtain liner plate finished product.
Present invention also offers the preparation method of another liner plate, comprise the following steps:
1) make steel: obtain through steel-making the steel billet that chemical composition is consistent with target liner plate, described steel billet comprises the component of following weight percent: the C of 0.2% ~ 0.45%; The Si of 0.2% ~ 0.5%; The Mn of 1.0% ~ 1.5%; The Cr of 0.2% ~ 0.6%; The Mo of 0.1% ~ 0.3%; The Nb of 0.001% ~ 0.003%; The V of 0.1% ~ 0.3%; The Ti of 0.01% ~ 0.05%, all the other are Fe and inevitable impurity;
2) steel rolling: by step 1) steel billet that obtains obtains thickness through steel rolling and matches and corresponding steel plate with target liner plate thickness;
3) anneal: by step 2) steel plate that obtains carries out Full Annealing, Heating temperature 780 DEG C ~ 800 DEG C, and insulation 3h ~ 5h, is cooled to room temperature in stove;
4) base: by step 3) steel plate that obtains cuts into the stamping strip that the distortion of target liner plate needs size;
5) punching press: by step 4) stamping strip that obtains strikes out the shape and size that target liner plate has, and obtains liner plate work in-process;
6) finishing: by step 5) the liner plate work in-process that obtain carry out finishing process after forging, and described finishing process comprises removes overlap and reconditioning profile;
7) quenching: by step 6) liner plate work in-process after finishing are heated to 850 DEG C ~ 880 DEG C and carry out quench treatment, cool time and liner plate thickness matching;
8) tempering: by step 7) the liner plate work in-process that obtain after quench treatment carry out temper, and Heating temperature 200 DEG C ~ 220 DEG C, soaking time and liner plate thickness matching, obtain liner plate finished product.
In above-mentioned two kinds of preparation methods, the molten steel through electric furnace or converter smelting output can cast steel ingot, also can cast steel billet, and then heating rolling becomes to prepare the steel plate of liner plate desired thickness.
Current every profession and trade liner material quality used mainly contains high mangaenese steel, Low Alloying Multicomponent Steels, Cr series white cast iron etc.Most kind hardness in above-mentioned liner material quality are higher and toughness is very low, make current liner plate preparation method normally casting and molding method.Therefore, current liner plate preparation method has the most shortcoming of casting and molding method: contaminate environment, worker's labour intensity are large, energy consumption is higher, easily produce casting flaw (segregation, loose and thin hole), the liner plate tissue looseness of output, coarse grains, each position performance not high and uneven, so, the wear resistance of the liner plate obtained by having had a strong impact on and shock resistance, reduce the work-ing life of liner plate.Because the most kind hardness in above-mentioned liner material quality are higher, toughness is very low, if steel plate machine-shaping is the liner plate work in-process with target liner plate shape by the forming method adopting forging or punching press, in machine-shaping process, easily forming defect is there is by workpiece, comprise cracking etc., cause shaping failure, therefore, current liner material quality cannot allow to adopt the forming method of forging or punching press to be processed into the liner plate finished product with target liner plate shape.For this reason, first the present invention optimizes the kind and content of preparing element in liner plate liner plate steel used, liner plate steel provided by the invention is made also to have higher toughness under the prerequisite with certain hardness, substantially the balance achieving hardness and toughness in liner plate material is taken into account, then on this basis, provide the preparation method of two kinds of liner plates, because this preparation method uses above-mentioned liner plate steel as starting material to make liner plate, because this liner plate steel raw material has the excellent combination of hardness and toughness, especially there is higher toughness, make the present invention that hot method for forging and molding or cold conditions impact forming method can be adopted to carry out machine-shaping to steel plate, be the liner plate work in-process with target liner plate shape by steel plate machine-shaping, make to prepare liner plate without the need to adopting traditional casting and molding method again, overcome the problem that original liner material quality can not adopt the forming method of forging or punching press, overcome a series of bad shortcoming that original castmethod has, reduce production cost, decrease resource and energy consumption, decrease environmental pollution, and adopt the liner plate that hot method for forging and molding or cold conditions impact forming method obtain, compared to casting and molding method, it organizes finer and close, crystal grain is more tiny, the performance at each position is more even, technique simplifies more.To sum up, the present invention is in the liner plate steel that optimized fabrication liner plate is used on the kind of element and the basis of content, further the preparation method of liner plate is improved, make full use of the feature that this liner plate steel has higher toughness, hot method for forging and molding or cold conditions impact forming method is adopted to carry out machine-shaping to steel plate, element strengthening and process strengthening match, and further increase wear resistance and the shock resistance of obtained liner plate, further increase the work-ing life of liner plate.
The method and apparatus of the not detailed description of the present invention is prior art, repeats no more.
In order to understand the present invention further, be described in detail to a kind of liner plate steel provided by the invention, liner plate and preparation method thereof below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
Embodiment 1
A preparation method for liner plate, comprises the following steps:
1) make steel: obtain through steel-making the steel billet that chemical composition is consistent with target liner plate, described steel billet comprises the component of weight percent: the C of 0.2%; The Si of 0.5%; The Mn of 1.0%; The Cr of 0.6%; The Mo of 0.1%; The Nb of 0.003%; The V of 0.1%; The Ti of 0.05%, all the other are Fe and inevitable impurity;
2) steel rolling: by step 1) steel billet that obtains obtains thickness through steel rolling and matches and corresponding steel plate with target liner plate thickness;
3) anneal: by step 2) steel plate that obtains carries out Full Annealing, Heating temperature 780 DEG C, and be incubated 5 hours, in stove, be cooled to room temperature;
4) base: by step 3) steel plate that obtains cuts into the forging stock that the distortion of target liner plate needs size;
5) forging: by step 4) forging stock that obtains is heated to 850 DEG C, and then the forging stock after heating is forged into forging mold the shape that target liner plate has, obtains liner plate work in-process;
6) finishing: by step 5) the liner plate work in-process that obtain carry out finishing process after forging, and described finishing process comprises removes overlap and reconditioning profile;
7) quenching: by step 6) liner plate after finishing is heated to 850 DEG C and carries out quench treatment, and the cool time is 3min;
8) tempering: by step 7) the liner plate work in-process that obtain after quench treatment carry out temper, Heating temperature 200 DEG C, and soaking time 2 hours, obtains liner plate finished product.
Detect: according to examination criteria, standard test specimen is made in the sampling of this liner plate, and detect the mechanical property of this liner plate, the hardness of this liner plate is 55HRC, impelling strength ak is 23J/cm 2, interior tissue is hardenite and lath martensite, and Ac1 line is 730 DEG C ~ 750 DEG C, and Ac3 line is 760 DEG C ~ 780 DEG C.
Embodiment 2
A preparation method for liner plate, comprises the following steps:
1) make steel: obtain through steel-making the steel billet that chemical composition is consistent with target liner plate, the chemical composition of described steel billet meets the component of following weight percent: the C of 0.30%; The Si of 0.35%; The Mn of 2.2%; The Cr of 0.40%; The Mo of 0.23%; The Nb of 0.002%; The V of 0.2%; The Ti of 0.03%, all the other are Fe and inevitable impurity;
2) steel rolling: by step 1) steel billet that obtains obtains thickness through steel rolling and matches and corresponding steel plate with target liner plate thickness;
3) anneal: by step 2) steel plate that obtains carries out Full Annealing, Heating temperature 800 DEG C, and be incubated 3 hours, in stove, be cooled to room temperature;
4) base: by step 3) steel plate that obtains cuts into the forging stock that the distortion of target liner plate needs size;
5) forging: by step 4) forging stock that obtains is heated to 900 DEG C, and then the steel plate after heating is forged into forging mold the shape that target liner plate has, obtains liner plate work in-process;
6) finishing: by step 5) the liner plate work in-process that obtain carry out finishing process after forging, and described finishing process comprises removes overlap and reconditioning profile;
7) quenching: by step 6) liner plate after finishing is heated to 880 DEG C and carries out quench treatment, and the cool time is 1min;
8) tempering: by step 7) the liner plate work in-process that obtain after quench treatment carry out temper, Heating temperature 200 DEG C, and soaking time 2 hours, obtains liner plate finished product.
Detect: according to examination criteria, standard test specimen is made in the sampling of this liner plate, and detect the mechanical property of this liner plate, the hardness of this liner plate is 57HRC, impelling strength ak is 26J/cm 2, interior tissue is hardenite and lath martensite, and Ac1 line is 730 DEG C ~ 750 DEG C, and Ac3 line is 760 DEG C ~ 780 DEG C.
Embodiment 3
A preparation method for liner plate, comprises the following steps:
1) make steel: obtain through steel-making the steel billet that chemical composition is consistent with target liner plate, the chemical composition of described steel billet meets the component of following weight percent: the C of 0.45%; The Si of 0.2%; The Mn of 1.5%; The Cr of 0.2%; The Mo of 0.3%; The Nb of 0.001%; The V of 0.3%; The Ti of 0.01%, all the other are Fe and inevitable impurity;
2) steel rolling: by step 1) steel billet that obtains obtains thickness through steel rolling and matches and corresponding steel plate with target liner plate thickness;
3) anneal: by step 2) steel plate that obtains carries out Full Annealing, Heating temperature 790 DEG C, and be incubated 4 hours, in stove, be cooled to room temperature;
4) base: by step 3) steel plate that obtains cuts into the stamping strip that the distortion of target liner plate needs size;
5) punching press: by step 4) blank that obtains strikes out the shape and size that target liner plate has, and obtains liner plate work in-process;
6) finishing: by step 5) the liner plate work in-process that obtain carry out finishing process after forging, and described finishing process comprises removes overlap and reconditioning profile;
7) quenching: by step 6) liner plate after finishing is heated to 860 DEG C and carries out quench treatment, and the cool time is for being 2min;
8) tempering: by step 7) the liner plate work in-process that obtain after quench treatment carry out temper, Heating temperature 200 DEG C, and soaking time 2 hours, obtains liner plate finished product.
Detect: according to examination criteria, standard test specimen is made in the sampling of this liner plate, and detect the mechanical property of this liner plate, the hardness of this liner plate is 60HRC, impelling strength ak is 25J/cm 2, interior tissue is hardenite and lath martensite, and Ac1 line is 730 DEG C ~ 750 DEG C, and Ac3 line is 760 DEG C ~ 780 DEG C.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.Multiple amendment for these embodiments is that apparent, defined herein General Principle can without departing from the spirit or scope of the present invention, realize in other embodiments for those skilled in the art.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the most wide region consistent with principle disclosed herein and features of novelty.

Claims (10)

1. a liner plate steel, is characterized in that, comprises the component of following weight percent: the C of 0.2% ~ 0.45%; The Si of 0.2% ~ 0.5%; The Mn of 1.0% ~ 1.5%; The Cr of 0.2% ~ 0.6%; The Mo of 0.1% ~ 0.3%; The Nb of 0.001% ~ 0.003%; The V of 0.1% ~ 0.3%; The Ti of 0.01% ~ 0.05%, all the other are Fe and inevitable impurity.
2. liner plate steel according to claim 1, is characterized in that, the weight percent of described Mn is 1.1% ~ 1.4%.
3. liner plate steel according to claim 1, is characterized in that, the weight percent of described Cr is 0.2% ~ 0.5%.
4. liner plate steel according to claim 1, is characterized in that, the weight percent of described Mo is 0.15% ~ 0.25%.
5. liner plate steel according to claim 1, is characterized in that, the weight percent of described Nb is 0.0015% ~ 0.0025%.
6. liner plate steel according to claim 1, is characterized in that, the weight percent of described V is 0.15% ~ 0.25%.
7. liner plate steel according to claim 1, is characterized in that, the weight percent of described Ti is 0.015% ~ 0.045%.
8. a liner plate, is characterized in that, described liner plate is liner plate steel described in claim 1 ~ 7 any one.
9. a preparation method for liner plate according to claim 8, is characterized in that, comprises the following steps:
1) make steel: obtain through steel-making the steel billet that chemical composition is consistent with target liner plate, described steel billet comprises the component of following weight percent: the C of 0.2% ~ 0.45%; The Si of 0.2% ~ 0.5%; The Mn of 1.0% ~ 1.5%; The Cr of 0.2% ~ 0.6%; The Mo of 0.1% ~ 0.3%; The Nb of 0.001% ~ 0.003%; The V of 0.1% ~ 0.3%; The Ti of 0.01% ~ 0.05%, all the other are Fe and inevitable impurity;
2) steel rolling: by step 1) steel billet that obtains obtains thickness through steel rolling and matches and corresponding steel plate with target liner plate thickness;
3) anneal: by step 2) steel plate that obtains carries out Full Annealing, Heating temperature 780 DEG C ~ 800 DEG C, and insulation 3h ~ 5h, is cooled to room temperature in stove;
4) base: by step 3) steel plate that obtains cuts into the forging stock that the distortion of target liner plate needs size;
5) forging: by step 4) forging stock that obtains is heated to 950 DEG C ~ 1000 DEG C, and then the forging stock after heating is forged into forging mold the shape that target liner plate has, obtains liner plate work in-process;
6) finishing: by step 5) the liner plate work in-process that obtain carry out finishing process after forging, and described finishing process comprises removes overlap and reconditioning profile;
7) quenching: by step 6) liner plate work in-process after finishing are heated to 850 DEG C ~ 880 DEG C and carry out quench treatment, cool time and liner plate thickness matching;
8) tempering: by step 7) the liner plate work in-process that obtain after quench treatment carry out temper, and Heating temperature 200 DEG C ~ 220 DEG C, soaking time and liner plate thickness matching, obtain liner plate finished product.
10. a preparation method for liner plate according to claim 8, is characterized in that, comprises the following steps:
1) make steel: obtain through steel-making the steel billet that chemical composition is consistent with target liner plate, described steel billet comprises the component of following weight percent: the C of 0.2% ~ 0.45%; The Si of 0.2% ~ 0.5%; The Mn of 1.0% ~ 1.5%; The Cr of 0.2% ~ 0.6%; The Mo of 0.1% ~ 0.3%; The Nb of 0.001% ~ 0.003%; The V of 0.1% ~ 0.3%; The Ti of 0.01% ~ 0.05%, all the other are Fe and inevitable impurity;
2) steel rolling: by step 1) steel billet that obtains obtains thickness through steel rolling and matches and corresponding steel plate with target liner plate thickness;
3) anneal: by step 2) steel plate that obtains carries out Full Annealing, Heating temperature 780 DEG C ~ 800 DEG C, and insulation 3h ~ 5h, is cooled to room temperature in stove;
4) base: by step 3) steel plate that obtains cuts into the stamping strip that the distortion of target liner plate needs size;
5) punching press: by step 4) stamping strip that obtains strikes out the shape and size that target liner plate has, and obtains liner plate work in-process;
6) finishing: by step 5) the liner plate work in-process that obtain carry out finishing process after forging, and described finishing process comprises removes overlap and reconditioning profile;
7) quenching: by step 6) liner plate work in-process after finishing are heated to 850 DEG C ~ 880 DEG C and carry out quench treatment, cool time and liner plate thickness matching;
8) tempering: by step 7) the liner plate work in-process that obtain after quench treatment carry out temper, and Heating temperature 200 DEG C ~ 220 DEG C, soaking time and liner plate thickness matching, obtain liner plate finished product.
CN201610065749.3A 2016-01-29 2016-01-29 A kind of liner plate steel, liner plate and preparation method thereof CN105483527B (en)

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Publication number Priority date Publication date Assignee Title
CN106636974A (en) * 2016-11-17 2017-05-10 马鞍山市银鼎机械制造有限公司 Preparation method of fatigue-resistant alloy lining plate for ball mill
CN109778068A (en) * 2019-03-11 2019-05-21 上海大学 The abrasion resistant cast steel and preparation method thereof of niobium vanadium complex intensifying

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Publication number Priority date Publication date Assignee Title
CN101596553A (en) * 2009-06-26 2009-12-09 北京工业大学 A kind of high speed steel roll collar and manufacture method thereof that is applied to high-speed rod-rolling mill
CN102605280A (en) * 2012-03-15 2012-07-25 宝山钢铁股份有限公司 Ultra-thick high-strength high low-temperature toughness steel plates for ocean platforms and production method thereof
CN102758067A (en) * 2012-06-29 2012-10-31 暨南大学 Thermal treatment method for wear-resistant low alloy steel

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CN101596553A (en) * 2009-06-26 2009-12-09 北京工业大学 A kind of high speed steel roll collar and manufacture method thereof that is applied to high-speed rod-rolling mill
CN102605280A (en) * 2012-03-15 2012-07-25 宝山钢铁股份有限公司 Ultra-thick high-strength high low-temperature toughness steel plates for ocean platforms and production method thereof
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106636974A (en) * 2016-11-17 2017-05-10 马鞍山市银鼎机械制造有限公司 Preparation method of fatigue-resistant alloy lining plate for ball mill
CN109778068A (en) * 2019-03-11 2019-05-21 上海大学 The abrasion resistant cast steel and preparation method thereof of niobium vanadium complex intensifying
CN109778068B (en) * 2019-03-11 2020-07-17 上海大学 Niobium-vanadium composite reinforced wear-resistant cast steel and preparation method thereof

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