CN106148809B - A kind of high-elongation mould steel and preparation method thereof - Google Patents
A kind of high-elongation mould steel and preparation method thereof Download PDFInfo
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- CN106148809B CN106148809B CN201610486515.6A CN201610486515A CN106148809B CN 106148809 B CN106148809 B CN 106148809B CN 201610486515 A CN201610486515 A CN 201610486515A CN 106148809 B CN106148809 B CN 106148809B
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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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- 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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Abstract
The invention provides a kind of high-elongation mould steel, including：C, Si, Mn, Cr, Mo, W, V, P, S, Cu, Mg, Ti, Sr, Zr, B, Zn, Re, Sn, Pb, Be, Sc, Li, Ni, La, Al, remaining is iron, and each component mass percent sum is 100%.The spheroidal graphite cast-iron includes a variety of nonmetallic, metals and transition metal, the addition of these elements is simultaneously worked in coordination, inoxidizability, corrosion resistance, resistance to abrasion and resistance to compression and the shock resistance of compressor of air conditioner cylinder body are improved, so as to extend service life of the compressor of air conditioner cylinder body under bad working environments.
Description
Technical field
The invention belongs to field of alloy material, more particularly to a kind of high-elongation mould steel, the system of the mould steel is further related to
Preparation Method.
Background technology
Mould is machinery, electronics, automobile, the fundamental technology equipment industrial products such as communicate, add some points.Due to being entered using mould
Row machine-shaping has a high efficiency and economy, and application of the mould in material machine-shaping industry is very universal.Make in mould
During, its quality is affected by various factors, such as shape design, crudy, surface treatment situation, real work ginseng
Number etc., wherein influence maximum is the material used in mold body.
Alloy grinding tool steel can part be high-elongation mould steel, hot die steel and plastic die steel, wherein high-elongation mould
Has steel mainly for the manufacture of at ambient temperature by the compressing various moulds of metal material.It is resistance to for cold mold material
It is most important three performance parameters index to grind performance, impact flexibility, hardness.However, generally for same steel grade, its wearability
Energy, impact flexibility and hardness be cannot concurrently reach most preferably, and worst impact flexibility is often generally yielded when hardness reaches optimal
Performance, and anti-wear performance is influenceed by hardness and impact flexibility simultaneously, and toughness properties then can guarantee that the stabilization of wear process
Property and security.
Most widely used high-elongation die steel material is mainly high carbon and chromium high-elongation mould steel on existing market
Crl2, Crl2MoV etc., it has higher quenching degree, hardenability, wearability, and high-temperature oxidation resistance is good, therefore as general
Type high-elongation die steel material be widely used in manufacture various uses cold-working mould, such as complex-shaped punching concave die,
Cold extruding die, roll threading wheel, cold shears cutting knife and fine measuring instrument etc..However, this kind of high-elongation mould steel belongs to ledeburite steel, by
Yu Gangzhong contains the carbide formers such as a large amount of Cr, Mo, V, is solidifying and can form a large amount of eutectic carbon in During Eutectoid Decomposition
Compound, cause the thermoplasticity of steel poor, face crack easily occur in process is forged.Meanwhile although forged deformation
Process can crush herring-bone form eutectic carbide, but by forging aspect effect, the distribution of carbides in heavy in section steel is still
Uneven；The mechanical property of steel is reduced when large particle carbide present in steel or uneven serious distribution of carbides, and is led
Mould is caused to occur the quality problems such as deformation, cracking in heat treatment process, and it is uneven with forging material size increase, eutectic carbide
Evenness is more serious.
The content of the invention
Goal of the invention：In order to solve the above problems, it is an object of the invention to provide a kind of wearability is good, hardness is high, resistance to punching
High-elongation mould steel that hitting property is good, service life is grown and preparation method thereof.
Technical scheme：A kind of high-elongation mould steel provided by the invention, include the component of following percentage by weight：C
3.6-4.1%, Si 3.7-4.6%, Mn 0.86-0.92%, Cr 10.2-10.8%, Mo 0.61-0.72%, W 1.91-
2.06%, V 1.67-1.76%, P 0.05-0.10%, S 0.01-0.03%, Cu 0.46-0.53%, Mg 0.50-
0.62%, Ti 0.21-0.34%, Sr 0.52-0.81%, B 0.61-0.73%, Zn 0.64-0.72%, Re 0.21-
0.29%, Pb 0.57-0.63%, Be 0.02-0.07%, Sc 0.26-0.34%, Ni 0.50-0.57%, La 0.01-
0.03%, Al 0.20-0.30%, remaining is iron, and each component mass percent sum is 100%.
Preferably, include the component of following percentage by weight：C 3.8-4.0%, Si 4.0-4.3%, Mn 0.88-
0.90%, Cr 10.4-10.6%, Mo 0.66-0.68%, W 1.94-1.96%, V 1.70-1.72%, P 0.07-
0.09%, S 0.01-0.03%, Cu 0.48-0.50%, Mg 0.55-0.57%, Ti 0.27-0.29%, Sr 0.66-
0.70%, B 0.64-0.66%, Zn 0.66-0.68%, Re 0.23-0.25%, Pb 0.59-0.61%, Be 0.03-
0.05%, Sc 0.28-0.30%, Ni 0.53-0.55%, La 0.01-0.03%, Al 0.24-0.26%, remaining is iron,
Each component mass percent sum is 100%.
As another kind preferably, the component of following percentage by weight is included：C 3.9%, Si 4.2%, Mn 0.89%, Cr
10.5%, Mo 0.67%, W 1.95%, V 1.71%, P 0.08%, S 0.02%, Cu 0.49%, Mg 0.56%, Ti
0.28%, Sr 0.68%, B 0.65%, Zn 0.67%, Re 0.24%, Pb 0.60%, Be 0.04%, Sc 0.29%,
Ni 0.54%, La 0.02%, Al 0.25%, remaining is iron, and each component mass percent sum is 100%.
Present invention also offers the preparation method of above-mentioned high-elongation mould steel, comprise the following steps：
(1) each raw material is smelted into 3-5h in 1500-1600 DEG C, 1500-1600 DEG C of refining 1-2h of Argon gas agitating, obtained primary
Molten steel；
(2) by primary molten steel under 1500-1600 DEG C of 60-80Pa vacuum outgas 10-20min, obtain high-purity molten steel；
(3) high-purity molten steel is cast at 1400-1500 DEG C, 800-900 DEG C of annealing 8-12h, is cooled to 400-500 DEG C
Stand afterwards and be cooled to room temperature, obtain electroslag bar；
(4) using vacuum consumable remelting furnace to consutrode rod remelting, remelting voltage 60-65V, electric current 10000-
1i000A, obtain steel ingot；
(5) steel ingot 1100-1200 DEG C of forging, is obtained into forging material in 800-900 DEG C of cycle annealing 14-18h；
(6) 800-900 DEG C of annealing 10-14h of material will be forged, produces high-elongation mould steel.
Beneficial effect：High-elongation mould steel wearability provided by the invention is good, hardness is high, impact resistance is good, heat treatment
Deform small, service life length.The high-elongation mould steel is applied to manufacture various high accuracy, cold-working mould, the cutlery of long-life
And measurer, such as thread rolling die, cold extrusion drift, complex-shaped punching concave die, cold extruding die, cylindrical die roll, thread rolling wheel, cold shearing
Knife and fine measuring instrument etc..
High-elongation mould steel provided by the invention includes a variety of nonmetallic, metals and transition metal, these elements
Addition and work in coordination, substantially increase the mechanical property of material.The high-elongation mould steel purity is high, quality is good, this hair
The bright content by strictly controlling various nonmetallic, metals and transition metal, so as to improve the intensity of spheroidal graphite cast-iron and
Plasticity.Silicone content is higher in the high-elongation mould steel, enables the crystallization temperature of silicon close to eutectic point, so as to greatly subtract
The formation of shrinkage defect in few alloy, the consistency of cast structure is significantly improved, so as to further increase the plasticity of cast iron.Should
Content of strontium is higher in spheroidal graphite cast-iron, is advantageous to alloy purification melt, removes the removal of impurity, refinement arborescent structure, hinders recrystallization and crystalline substance
Grain length is big, improves alloy heat endurance, so as to improve the intensity of the high-elongation mould steel and plasticity.
High-elongation mould steel provided by the invention is in light weight, quality is good, intensity is high, plasticity is high, good flowing properties, prepares
Technique is simple, cost is relatively low.
Embodiment
According to following embodiments, the present invention may be better understood.It is however, as it will be easily appreciated by one skilled in the art that real
Apply specific material proportion, process conditions and its result described by example and be merely to illustrate the present invention, without that will not also should limit
The present invention described in detail in claims processed.
Embodiment 1
High-elongation mould steel, include the component of following percentage by weight：C 3.9%, Si 4.2%, Mn 0.89%, Cr
10.5%, Mo 0.67%, W 1.95%, V 1.71%, P 0.08%, S 0.02%, Cu 0.49%, Mg 0.56%, Ti
0.28%, Sr 0.68%, B 0.65%, Zn 0.67%, Re 0.24%, Pb 0.60%, Be 0.04%, Sc 0.29%,
Ni 0.54%, La 0.02%, Al 0.25%, remaining is iron, and each component mass percent sum is 100%.
Present invention also offers the preparation method of above-mentioned high-elongation mould steel, comprise the following steps：
(1) each raw material is smelted into 5h in 1500 DEG C, 1500 DEG C of refining 2h of Argon gas agitating, obtains primary molten steel；
(2) by primary molten steel under 1500 DEG C of 80Pa vacuum outgas 20min, obtain high-purity molten steel；
(3) high-purity molten steel is cast at 1400 DEG C, 800 DEG C of annealing 12h, is stood after being cooled to 400 DEG C and be cooled to room
Temperature, obtain electroslag bar；
(4) steel ingot remelting voltage 65V, electric current 11000A, is obtained to consutrode rod remelting using vacuum consumable remelting furnace；
(5) by 800 DEG C of cycle annealing 18h of steel ingot, 1100 DEG C of forgings, forging material is obtained；
(6) 800 DEG C of annealing 14h of material will be forged, produce high-elongation mould steel.
Embodiment 2
High-elongation mould steel, include the component of following percentage by weight：C 3.8%, Si 4.0%, Mn 0.88%, Cr
10.4%, Mo 0.66%, W 1.96%, V1.72%, P 0.09%, S 0.03%, Cu 0.50%, Mg 0.55%, Ti
0.27%, Sr 0.66%, B 0.64%, Zn 0.66%, Re 0.25%, Pb 0.61%, Be 0.05%, Sc 0.30%,
Ni 0.55%, La 0.01%, Al 0.24%, remaining is iron, and each component mass percent sum is 100%.
Present invention also offers the preparation method of above-mentioned high-elongation mould steel, comprise the following steps：
(1) each raw material is smelted into 3h in 1600 DEG C, 1600 DEG C of refining 1h of Argon gas agitating, obtains primary molten steel；
(2) by primary molten steel under 1600 DEG C of 60-80Pa vacuum outgas 10min, obtain high-purity molten steel；
(3) high-purity molten steel is cast at 1500 DEG C, 900 DEG C of annealing 8h, is stood after being cooled to 500 DEG C and be cooled to room
Temperature, obtain electroslag bar；
(4) steel ingot remelting voltage 60V, electric current 10000A, is obtained to consutrode rod remelting using vacuum consumable remelting furnace；
(5) steel ingot 1200 DEG C of forgings, is obtained into forging material in 900 DEG C of cycle annealing 14h；
(6) 900 DEG C of annealing 10h of material will be forged, produce high-elongation mould steel.
Embodiment 3
High-elongation mould steel, include the component of following percentage by weight：C 4.0%, Si 4.3%, Mn 0.90%, Cr
10.6%, Mo 0.68%, W 1.94%, V 1.70%, P 0.07%, S 0.01%, Cu 0.48%, Mg 0.57%, Ti
0.29%, Sr 0.70%, B 0.66%, Zn 0.68%, Re 0.23%, Pb 0.59%, Be 0.03%, Sc 0.28%,
Ni 0.53%, La 0.03%, Al 0.26%, remaining is iron, and each component mass percent sum is 100%.
Embodiment 4
High-elongation mould steel, include the component of following percentage by weight：C 3.6%, Si 3.7%, Mn 0.86%, Cr
10.2%, Mo 0.61%, W 2.06%, V 1.76%, P 0.10%, S 0.03%, Cu 0.53%, Mg 0.50%, Ti
0.21%, Sr 0.52%, B 0.61%, Zn 0.64%, Re 0.29%, Pb 0.63%, Be 0.07%, Sc 0.34%,
Ni 0.57%, La 0.01%, Al 0.20%, remaining is iron, and each component mass percent sum is 100%..
Embodiment 5
Improved as another kind, include the component of following percentage by weight：C 4.1%, Si 4.6%, Mn 0.92%,
Cr10.8%, Mo 00.72%, W 1.91%, V 1.67%, P 0.05%, S 0.01%, Cu 0.46%, Mg 0.62%,
Ti 0.34%, Sr 0.81%, B 0.73%, Zn 0.72%, Re 0.21%, Pb 0.57%, Be 0.02%, Sc
0.26%, Ni 0.50%, La 0.03%, Al 0.30%, remaining is iron, and each component mass percent sum is 100%.
Embodiment 6
The high-elongation mould steel of embodiment 1 to 5 is cast into coupon, determines its mechanical property.
The mechanical property of the high-elongation mould steel coupon of the embodiment 1 to 5 of table 1
Determination of Hardness method：According to GB/T230.1；As seen from the above table, high-elongation mould steel provided by the invention its prolong
The rate of stretching is up to more than 14, and more than 30% is improved than commercially available SKD11.High from hardness, high-elongation mould steel of the invention is resistance to
Mill property is good.
Claims (3)
- A kind of 1. high-elongation mould steel, it is characterised in that：Include the component of following percentage by weight：C 3.6-4.1%, Si 3.7-4.6%, Mn 0.86-0.92%, Cr 10.2-10.8%, Mo 0.61-0.72%, W 1.91-2.06%, V 1.67- 1.76%, P 0.05-0.10%, S 0.01-0.03%, Cu 0.46-0.53%, Mg 0.50-0.62%, Ti 0.21- 0.34%, Sr 0.52-0.81%, B 0.61-0.73%, Zn 0.64-0.72%, Re 0.21-0.29%, Pb 0.57- 0.63%, Be 0.02-0.07%, Sc 0.26-0.34%, Ni 0.50-0.57%, La 0.01-0.03%, Al 0.20- 0.30%, remaining is iron, and each component mass percent sum is 100%.
- A kind of 2. high-elongation mould steel according to claim 1, it is characterised in that：Include the group of following percentage by weight Part：C 3.8-4.0%, Si 4.0-4.3%, Mn 0.88-0.90%, Cr 10.4-10.6%, Mo 0.66-0.68%, W 1.94-1.96%, V 1.70-1.72%, P 0.07-0.09%, S 0.01-0.03%, Cu 0.48-0.50%, Mg 0.55- 0.57%, Ti 0.27-0.29%, Sr 0.66-0.70%, B 0.64-0.66%, Zn 0.66-0.68%, Re 0.23- 0.25%, Pb 0.59-0.61%, Be 0.03-0.05%, Sc 0.28-0.30%, Ni 0.53-0.55%, La 0.01- 0.03%, Al 0.24-0.26%, remaining is iron, and each component mass percent sum is 100%.
- A kind of 3. high-elongation mould steel according to claim 1, it is characterised in that：Include the group of following percentage by weight Part：C 3.9%, Si 4.2%, Mn 0.89%, Cr 10.5%, Mo 0.67%, W 1.95%, V 1.71%, P 0.08%, S 0.02%, Cu 0.49%, Mg 0.56%, Ti 0.28%, Sr 0.68%, B 0.65%, Zn 0.67%, Re 0.24%, Pb 0.60%, Be 0.04%, Sc 0.29%, Ni 0.54%, La 0.02%, Al 0.25%, remaining is iron, Each component mass percent sum is 100%.
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| CN106756447B (en) * | 2016-11-24 | 2018-10-26 | 江苏雨燕模塑有限公司 | A kind of high-strength durable automobile die material and preparation method thereof |
| CN111647795B (en) * | 2020-04-29 | 2022-03-04 | 樟树市兴隆高新材料有限公司 | Cold-rolled die steel and preparation method thereof |
| CN111647807B (en) * | 2020-05-18 | 2022-03-04 | 樟树市兴隆高新材料有限公司 | High-alloy die steel and preparation process thereof |
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| CN103194685B (en) * | 2013-04-02 | 2015-09-30 | 安泰科技股份有限公司 | Powder metallurgy high abrasion high toughness cold working die steel and preparation method thereof |
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