CN113073255A - Formula and preparation method of metal material suitable for manufacturing high-strength steel blade - Google Patents
Formula and preparation method of metal material suitable for manufacturing high-strength steel blade Download PDFInfo
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/007—Heat treatment of ferrous alloys containing Co
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/18—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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- 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
- C22C38/18—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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- 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
- C22C38/18—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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- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
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Abstract
The invention discloses a formula of a metal material suitable for manufacturing a high-strength steel blade and a preparation method thereof, wherein the metal material consists of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific mixture ratio is as follows: C. 0.68-0.72 parts; si 0.6-0.9 weight portions; 0.001-0.002 part of S, 0.001-0.002 part of P and 0.008-0.01 part of P. According to the invention, through scientific proportioning and perfect preparation process of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, the toughness and strength of the metal material are improved, the alloy is suitable for shearing various high-strength materials, the welding capacity and low temperature of the metal material can be improved, the compactness of the structure is ensured, the abrasion resistance of the casting is improved, the rejection rate of the casting is reduced, the enterprise cost is reduced, the economic benefit is improved, the problem that the recent industrial level has sufficient progress, the requirements on the strength and toughness of the metal material are higher is solved, and the original basic material cannot meet the requirement of mechanical processing on the toughness.
Description
Technical Field
The invention relates to the technical field of metal material processing, in particular to a formula of a metal material suitable for manufacturing a high-strength steel blade and a preparation method thereof.
Background
The metal material is generally a pure metal or an alloy in industrial application, and about more than 70 pure metals exist in nature, wherein common metals include iron, copper, aluminum, tin, nickel, gold, silver, lead, zinc, and the like, while an alloy generally refers to a material which is formed by combining two or more metals or metals and non-metals and has metal characteristics, common alloys such as a steel alloy consisting of iron and carbon, and an alloy formed by copper and zinc is brass, and is generally divided into two categories of processing performance and service performance, wherein the processing performance refers to the performance of the metal material under the determined cold and hot processing conditions during the processing and manufacturing process of a mechanical part, and the quality of the processing performance of the metal material determines the adaptability of the metal material to processing and forming during the manufacturing process, and the required processing performance is different due to different processing conditions, such as casting performance, weldability, forgeability, forging performance, and the like, Heat treatment performance, cutting processability and the like, wherein the service performance refers to the performance of the metal material under the service condition of the mechanical part, and comprises mechanical properties, physical properties, chemical properties and the like.
The quality of the service performance of the metal material determines the application range and the service life of the metal material, in the mechanical manufacturing industry, common mechanical parts are used in normal temperature, normal pressure and very strong corrosive media, in addition, each mechanical part can bear the action of different loads in the using process, the performance of the metal material for resisting damage under the action of the load is called as mechanical performance, the mechanical performance of the metal material is the main basis of the design and the material selection of the parts, the external load properties are different, such as stretching, compression, torsion, impact, cyclic load and the like, the mechanical performance required by the metal material is also different, and the common mechanical performance comprises the following mechanical properties: the strength, plasticity, hardness, impact toughness, multiple impact resistance, fatigue limit and the like, the industrial level in recent years has great progress, higher requirements on the strength and toughness of metal materials are provided, and the original basic material cannot meet the requirement on the toughness of machining.
Disclosure of Invention
The invention aims to provide a metal material suitable for manufacturing a high-strength steel blade, which has the advantages of improving the toughness and the high strength of metal, and solves the problems that the industrial level is greatly improved in recent years, the strength and the toughness of the metal material are higher, and the original basic material cannot meet the toughness requirement of machining.
In order to achieve the purpose, the invention provides the following technical scheme: a metal material suitable for manufacturing a high-strength steel blade is composed of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific mixture ratio is as follows:
C. 0.68-0.72 parts;
si 0.6-0.9 weight portions;
s, 0.001-0.002 portion;
p, 0.008-0.01 portion;
0.2-0.5 part of Mn;
1.1-1.3 parts of Ni;
6.5-7.0 parts of Cr;
3.2-3.6 parts of Mo;
v, 1.8-2.2 parts;
0.1-0.2 part of Cu;
w, 0.4-0.6 part;
0.4-0.5 part of Co;
the balance of Fe element and inevitable impurities.
Preferably, the metal material consists of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific mixture ratio is as follows:
C. 0.68 parts;
si, 0.6 part;
s, 0.001 part;
p, 0.008 parts;
0.2 part of Mn;
1.1 parts of Ni;
6.5 parts of Cr;
3.2 parts of Mo;
v, 1.8 parts;
0.1 part of Cu;
w, 0.4 part;
0.4 part of Co;
the balance of Fe element and inevitable impurities.
Preferably, the metal material consists of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific mixture ratio is as follows:
C. 0.72 part;
si, 0.9 part;
s, 0.002 part;
p, 0.01 part;
0.5 part of Mn;
1.3 parts of Ni;
7.0 parts of Cr;
3.6 parts of Mo;
v, 2.2 parts;
0.2 part of Cu;
w, 0.6 part;
0.5 part of Co;
the balance of Fe element and inevitable impurities.
A preparation method of a metal material suitable for manufacturing a high-strength steel blade comprises the following steps:
A. putting the proportioned raw materials into a smelting furnace, and heating until the raw materials are melted;
B. standing for 10-20 min after melting, removing slag on the surface of the molten metal, and transferring the molten metal into a heat preservation furnace;
C. uniformly scattering slag remover powder on the surface of molten slag, stirring the molten slag in time, and after the molten slag is crushed, removing slag powder to improve the purification degree of metal;
D. pouring through the solution, and cooling after pouring;
E. and finally, tempering to obtain the metal material.
Preferably, the heating melting temperature in the step A is 1570-1600 ℃, and the stirring is carried out throughout the whole melting process.
Preferably, the pouring process in the step D does not have to add the sprue residue or the waste casting into the molten metal at will.
Preferably, the cooling temperature in the step D is 920-950 ℃, and the cooling is air cooling.
Preferably, the temperature of the tempering treatment in the step E is 400-430 ℃.
Preferably, the temperature of the molten metal in the whole smelting and pouring process from step A to step D is not higher than 1600 ℃, and the time from smelting to pouring is not more than 8 hours.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through scientific proportioning and perfect preparation process of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, the toughness and strength of the metal material are improved, the alloy is suitable for shearing various high-strength materials, the welding capacity and low temperature of the metal material can be improved, the compactness of the structure is ensured, the abrasion resistance of the casting is improved, the rejection rate of the casting is reduced, the enterprise cost is reduced, the economic benefit is improved, the problem that the recent industrial level has sufficient progress, the requirements on the strength and toughness of the metal material are higher is solved, and the original basic material cannot meet the requirement of mechanical processing on the toughness.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The materials of the present invention are all standard materials or materials known to those skilled in the art, and their functionality is known to those skilled in the art through technical manuals or through routine experimentation.
A metal material suitable for manufacturing a high-strength steel blade is composed of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific mixture ratio is as follows:
C. 0.68-0.72 parts;
si 0.6-0.9 weight portions;
s, 0.001-0.002 portion;
p, 0.008-0.01 portion;
0.2-0.5 part of Mn;
1.1-1.3 parts of Ni;
6.5-7.0 parts of Cr;
3.2-3.6 parts of Mo;
v, 1.8-2.2 parts;
0.1-0.2 part of Cu;
w, 0.4-0.6 part;
0.4-0.5 part of Co;
the balance of Fe element and inevitable impurities.
The preferable embodiment is that the metal material is composed of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific ratio is as follows:
C. 0.68 parts;
si, 0.6 part;
s, 0.001 part;
p, 0.008 parts;
0.2 part of Mn;
1.1 parts of Ni;
6.5 parts of Cr;
3.2 parts of Mo;
v, 1.8 parts;
0.1 part of Cu;
w, 0.4 part;
0.4 part of Co;
the balance of Fe element and inevitable impurities.
The metal material consists of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific mixture ratio is as follows:
C. 0.72 part;
si, 0.9 part;
s, 0.002 part;
p, 0.01 part;
0.5 part of Mn;
1.3 parts of Ni;
7.0 parts of Cr;
3.6 parts of Mo;
v, 2.2 parts;
0.2 part of Cu;
w, 0.6 part;
0.5 part of Co;
the balance of Fe element and inevitable impurities.
A preparation method of a metal material suitable for manufacturing a high-strength steel blade comprises the following steps:
A. putting the proportioned raw materials into a smelting furnace, and heating until the raw materials are melted;
B. standing for 10-20 min after melting, removing slag on the surface of the molten metal, and transferring the molten metal into a heat preservation furnace;
C. uniformly scattering slag remover powder on the surface of molten slag, stirring the molten slag in time, and after the molten slag is crushed, removing slag powder to improve the purification degree of metal;
D. pouring through the solution, and cooling after pouring;
E. and finally, tempering to obtain the metal material.
The heating melting temperature in the step A is 1570-1600 ℃, and the stirring is carried out throughout the whole melting process.
In the pouring process in the step D, pouring gate excess materials or waste castings cannot be added into the molten metal at will.
The cooling temperature in the step D is 920-950 ℃, and the cooling is air cooling.
The temperature of the tempering treatment in the step E is 400-430 ℃.
Step A to step D, the temperature of the molten metal in the whole smelting and pouring process is not higher than 1600 ℃, and the time from smelting to pouring is not more than 8 hours
Example two:
in the first embodiment, the following steps are added:
the metal material consists of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific mixture ratio is as follows:
C. 0.68 parts;
si, 0.6 part;
s, 0.001 part;
p, 0.008 parts;
0.2 part of Mn;
1.1 parts of Ni;
6.5 parts of Cr;
3.2 parts of Mo;
v, 1.8 parts;
0.1 part of Cu;
w, 0.4 part;
0.4 part of Co;
the balance of Fe element and inevitable impurities.
s, comprising the steps of:
A. putting the proportioned raw materials into a smelting furnace, and heating until the raw materials are melted;
B. standing for 10-20 min after melting, removing slag on the surface of the molten metal, and transferring the molten metal into a heat preservation furnace;
C. uniformly scattering slag remover powder on the surface of molten slag, stirring the molten slag in time, and after the molten slag is crushed, removing slag powder to improve the purification degree of metal;
D. pouring through the solution, and cooling after pouring;
E. and finally, tempering to obtain the metal material.
Example three:
in the second embodiment, the following steps are added:
the metal material consists of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific mixture ratio is as follows:
C. 0.72 part;
si, 0.9 part;
s, 0.002 part;
p, 0.01 part;
0.5 part of Mn;
1.3 parts of Ni;
7.0 parts of Cr;
3.6 parts of Mo;
v, 2.2 parts;
0.2 part of Cu;
w, 0.6 part;
0.5 part of Co;
the balance of Fe element and inevitable impurities.
A preparation method of a metal material suitable for manufacturing a high-strength steel blade comprises the following steps:
A. putting the proportioned raw materials into a smelting furnace, and heating until the raw materials are melted;
B. standing for 10-20 min after melting, removing slag on the surface of the molten metal, and transferring the molten metal into a heat preservation furnace;
C. uniformly scattering slag remover powder on the surface of molten slag, stirring the molten slag in time, and after the molten slag is crushed, removing slag powder to improve the purification degree of metal;
D. pouring through the solution, and cooling after pouring;
E. and finally, tempering to obtain the metal material.
Example four:
in the third embodiment, the following steps are added:
the heating melting temperature in the step A is 1570-1600 ℃, and the stirring is carried out throughout the whole melting process.
A preparation method of a metal material suitable for manufacturing a high-strength steel blade comprises the following steps:
A. putting the proportioned raw materials into a smelting furnace, and heating until the raw materials are melted;
B. standing for 10-20 min after melting, removing slag on the surface of the molten metal, and transferring the molten metal into a heat preservation furnace;
C. uniformly scattering slag remover powder on the surface of molten slag, stirring the molten slag in time, and after the molten slag is crushed, removing slag powder to improve the purification degree of metal;
D. pouring through the solution, and cooling after pouring;
E. and finally, tempering to obtain the metal material.
Example five:
in the fourth example, the following steps were added:
in the pouring process in the step D, pouring gate excess materials or waste castings cannot be added into the molten metal at will.
A preparation method of a metal material suitable for manufacturing a high-strength steel blade comprises the following steps:
A. putting the proportioned raw materials into a smelting furnace, and heating until the raw materials are melted;
B. standing for 10-20 min after melting, removing slag on the surface of the molten metal, and transferring the molten metal into a heat preservation furnace;
C. uniformly scattering slag remover powder on the surface of molten slag, stirring the molten slag in time, and after the molten slag is crushed, removing slag powder to improve the purification degree of metal;
D. pouring through the solution, and cooling after pouring;
E. and finally, tempering to obtain the metal material.
Example six:
in the fifth example, the following steps were added:
the cooling temperature in the step D is 920-950 ℃, and the cooling is air cooling.
A preparation method of a metal material suitable for manufacturing a high-strength steel blade comprises the following steps:
A. putting the proportioned raw materials into a smelting furnace, and heating until the raw materials are melted;
B. standing for 10-20 min after melting, removing slag on the surface of the molten metal, and transferring the molten metal into a heat preservation furnace;
C. uniformly scattering slag remover powder on the surface of molten slag, stirring the molten slag in time, and after the molten slag is crushed, removing slag powder to improve the purification degree of metal;
D. pouring through the solution, and cooling after pouring;
E. and finally, tempering to obtain the metal material.
Example seven:
in example six, the following steps were added:
the temperature of the tempering treatment in the step E is 400-430 ℃.
A preparation method of a metal material suitable for manufacturing a high-strength steel blade comprises the following steps:
A. putting the proportioned raw materials into a smelting furnace, and heating until the raw materials are melted;
B. standing for 10-20 min after melting, removing slag on the surface of the molten metal, and transferring the molten metal into a heat preservation furnace;
C. uniformly scattering slag remover powder on the surface of molten slag, stirring the molten slag in time, and after the molten slag is crushed, removing slag powder to improve the purification degree of metal;
D. pouring through the solution, and cooling after pouring;
E. and finally, tempering to obtain the metal material.
Example eight:
in example seven, the following steps were added:
and (D) in the steps A to D, the temperature of the molten metal in the whole smelting and pouring process is not higher than 1600 ℃, and the time from smelting to pouring is not more than 8 hours.
A preparation method of a metal material suitable for manufacturing a high-strength steel blade comprises the following steps:
A. putting the proportioned raw materials into a smelting furnace, and heating until the raw materials are melted;
B. standing for 10-20 min after melting, removing slag on the surface of the molten metal, and transferring the molten metal into a heat preservation furnace;
C. uniformly scattering slag remover powder on the surface of molten slag, stirring the molten slag in time, and after the molten slag is crushed, removing slag powder to improve the purification degree of metal;
D. pouring through the solution, and cooling after pouring;
E. and finally, tempering to obtain the metal material.
When the metal material is used, the proportioned raw materials are put into a smelting furnace, heated until the raw materials are melted, and then kept stand for 10-20 min after the raw materials are melted, then slag on the surface of molten metal is removed, the molten metal is transferred into a heat preservation furnace, slag removing agent powder is uniformly scattered on the surface of the molten slag, the molten slag is stirred in time, after the molten slag is crushed, the slag powder is taken out to improve the purification degree of the metal, and the metal material is obtained by pouring through solution, cooling after pouring and finally tempering.
The standard parts used in the present application document can be purchased from the market, and can be customized according to the description of the specification, the specific connection mode of each part adopts the conventional means such as bolts, rivets, welding, and the like, the machinery, parts and equipment adopt the conventional type in the prior art, the control mode is automatically controlled by a controller, the control circuit of the controller can be realized by simple programming of technicians in the field, the control circuit belongs to the common knowledge in the field, and the present application document is mainly used for protecting mechanical devices, so the detailed explanation of the control mode and the circuit connection is not needed.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a metal material suitable for preparation high strength steel blade which characterized in that: the metal material consists of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific mixture ratio is as follows:
C. 0.68-0.72 parts;
si 0.6-0.9 weight portions;
s, 0.001-0.002 portion;
p, 0.008-0.01 portion;
0.2-0.5 part of Mn;
1.1-1.3 parts of Ni;
6.5-7.0 parts of Cr;
3.2-3.6 parts of Mo;
v, 1.8-2.2 parts;
0.1-0.2 part of Cu;
w, 0.4-0.6 part;
0.4-0.5 part of Co;
the balance of Fe element and inevitable impurities.
2. The metal material suitable for manufacturing high-strength steel blades as claimed in claim 1, wherein: the metal material consists of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific ratio is as follows:
C. 0.68 parts;
si, 0.6 part;
s, 0.001 part;
p, 0.008 parts;
0.2 part of Mn;
1.1 parts of Ni;
6.5 parts of Cr;
3.2 parts of Mo;
v, 1.8 parts;
0.1 part of Cu;
w, 0.4 part;
0.4 part of Co;
the balance of Fe element and inevitable impurities.
3. The metal material suitable for manufacturing high-strength steel blades as claimed in claim 1, wherein: the metal material consists of C, Si, S, P, Mn, Ni, Cr, Mo, V, Cu, W and Co, and the specific ratio is as follows:
C. 0.72 part;
si, 0.9 part;
s, 0.002 part;
p, 0.01 part;
0.5 part of Mn;
1.3 parts of Ni;
7.0 parts of Cr;
3.6 parts of Mo;
v, 2.2 parts;
0.2 part of Cu;
w, 0.6 part;
0.5 part of Co;
the balance of Fe element and inevitable impurities.
4. A method for preparing a metal material suitable for manufacturing a high-strength steel blade, wherein the metal material is as defined in any one of claims 1 to 3, and is characterized in that: the method comprises the following steps:
A. putting the proportioned raw materials into a smelting furnace, and heating until the raw materials are melted;
B. standing for 10-20 min after melting, removing slag on the surface of the molten metal, and transferring the molten metal into a heat preservation furnace;
C. uniformly scattering slag remover powder on the surface of molten slag, stirring the molten slag in time, and after the molten slag is crushed, removing slag powder to improve the purification degree of metal;
D. pouring through the solution, and cooling after pouring;
E. and finally, tempering to obtain the metal material.
5. The method for preparing a metal material suitable for manufacturing a high-strength steel blade according to claim 4, wherein the method comprises the following steps: the heating melting temperature in the step A is 1570-1600 ℃, and stirring is carried out throughout the whole melting process.
6. The method for preparing a metal material suitable for manufacturing a high-strength steel blade according to claim 4, wherein the method comprises the following steps: in the pouring process in the step D, pouring gate excess materials or waste castings cannot be added into the molten metal at will.
7. The method for preparing a metal material suitable for manufacturing a high-strength steel blade according to claim 4, wherein the method comprises the following steps: the cooling temperature in the step D is 920-950 ℃, and the cooling is air cooling.
8. The method for preparing a metal material suitable for manufacturing a high-strength steel blade according to claim 4, wherein the method comprises the following steps: the temperature of the tempering treatment in the step E is 400-430 ℃.
9. The method for preparing a metal material suitable for manufacturing a high-strength steel blade according to claim 4, wherein the method comprises the following steps: in the steps A to D, the temperature of the molten metal in the whole smelting and pouring process is not higher than 1600 ℃, and the time from smelting to pouring is not more than 8 hours.
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