CN108611569A - 520B precipitation-hardening stainless steels steel ingot and its production method - Google Patents

520B precipitation-hardening stainless steels steel ingot and its production method Download PDF

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CN108611569A
CN108611569A CN201810862324.4A CN201810862324A CN108611569A CN 108611569 A CN108611569 A CN 108611569A CN 201810862324 A CN201810862324 A CN 201810862324A CN 108611569 A CN108611569 A CN 108611569A
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precipitation
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hardening stainless
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俞荣新
张庭超
祖宇伟
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ZHEJIANG DALONG ALLOY STEEL CO Ltd
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    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
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    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum
    • 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
    • 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
    • C21D1/26—Methods of annealing
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • 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
    • 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
    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

The invention discloses 520B precipitation-hardening stainless steels steel ingot and its production method, the chemical composition (wt%) by weight percentage of 520B precipitation-hardening stainless steel steel ingots is：C：0.042~0.060；Mn：≤1.00；Si：≤0.65；S：≤0.005；P：≤0.015；Cr：13.0~14.5；Ni：5.0~6.0；Mo：1.30~1.80；Cu：1.32~2.00；Nb：0.27~0.45, remaining Fe.Production method includes the following steps：Raw material select；Electric arc furnace smelting；VODC vacuum refining furnaces refine；Tapping；Cast；Demoulding；Annealing；Forging；Forging roughing；Property heat treatment；Physical and chemical testing, dimension control finally obtain 520B precipitation-hardening stainless steel steel ingot finished products.The 520B precipitation-hardening stainless steels of the present invention are a kind of martensitic precipitations, have corrosion resistance, high intensity, high rigidity and good welding performance, are suitable for the civil infrastructures fields such as aerospace, medical instrument and machine-building.

Description

520B precipitation-hardening stainless steels steel ingot and its production method
Technical field
The invention belongs to steel technical fields, and in particular to 520B precipitation-hardening stainless steels steel ingot and its production method.
Background technology
As aircraft industry continues to develop, higher design requirement is proposed to the key component important parts of aviation flight equipment, Especially high intensity, the performance of high tenacity, resistance to high fatigue.520B is a kind of martensitic precipitation, is had corrosion-resistant Property, high intensity, high rigidity and good welding performance, it is great to be widely used in aerospace, medical instrument and machine-building etc. Engineering structure field.Therefore, many novel precipitation-hardening stainless steels are developed.The type and chemistry of precipitation-hardening stainless steel Ingredient is divided into：1, martensite type：Martensitic precipitation can be divided into martensitic precipitation hardening type and martensite ag(e)ing again Constrictive type.But the supply of material state of various martensite type precipitation-hardening stainless steels is martensite, as long as finished product is simply at timeliness Reason can reach precipitation-hardening effect；2, semiaustenitic type：Semiaustenitic precipitation-hardening stainless steel, supply of material state are austenite. This kind of steel must pass through special heat treatment before precipitation-hardening processing.
Invention content
In order to meet the needs of aircraft equipment development, the technical solution adopted by the present invention is：520B precipitation-hardening stainless steels Steel ingot, chemical composition (wt%) by weight percentage are：
C：0.042~0.060；Mn：≤1.00；Si：≤0.65；S：≤0.005；P：≤0.015；Cr：13.0~14.5； Ni：5.0~6.0；Mo：1.30~1.80；Cu：1.32~2.00；Nb：0.27~0.45, remaining Fe.
The production method of 520B precipitation-hardening stainless steel steel ingots, includes the following steps：
1) raw material select：Select S≤0.030%, the steel scraps of P≤0.030% and Cr, Ni, Mo, Cu, Nb alloy；
2) electric arc furnace smelting：Make C >=0.80%, Si≤0.70%, Mn≤1.0% in melting stage, Cr≤14.0%, Ni≤ 6.0%, Mo≤1.80%, Cu≤1.8%, Nb≤0.45%, P≤0.020%；The heat of oxidation make decarburized amount >=0.40%, C >= 0.70%, P≤0.008%, S≤0.006%；Reducing agent is added in reduction period molten steel and forms white slag, bath temperature is kept 1700 DEG C, subsequent molten steel is transferred to tundish, and skims in tundish, and level of residue≤1.5kg/t subsequently enters VODC vacuum fines Furnace refines；
3) VODC vacuum refining furnaces refine：VOD stages, 80~120mbar of vacuum degree, oxygen flow 550M3/ h, argon flow 5M3/h；VCD stages, vacuum degree≤5mbar, 10~15 minutes pumpdown times, argon flow 5M3/h；The VOH stages, by molten steel weight Amount often adds 1% aluminium that 250 DEG C of calculating can be improved, and is warming up to 1650~1670 DEG C, 500~600M of oxygen flow3/ h, vacuum degree 350 ~450mbar, argon flow 5M3/ h adjusts each ingredient to prescribed requirement；VD stages, vacuum degree≤1.0mbar, pumpdown time ＞ 20 minutes, argon flow 5M3/h；
4) it taps：Molten steel is transferred to ladle at a temperature of 1600 DEG C, and 1.5~2.5kg/t silico-calcium deoxidiers are first added in ladle, The swash of wave final deoxidizing when molten steel enters ladle；
5) it pours into a mould：Molten steel calmness 7~8 minutes, are used in combination argon for protecting pouring, prevent secondary oxidation before cast；
6) it demoulds：It is cold first to carry out the mould of a period of time, is demoulded after cooling；
7) it anneals：Annealing process is 680 DEG C × 10~15h, is come out of the stove air-cooled；
8) it forges：Initial forging temperature be 1150 DEG C, final forging temperature >=850 DEG C, forging ratio >=2.0, ratio of elongation >=2.0, always than ≥4.0；
9) forging roughing：Roughing is carried out to forging, and is detected using ultrasonic examination；
10) property heat treatment：Solution treatment is carried out successively：1050 DEG C × 1h water coolings or oil cooling；Intermediate adjustment processing：850 DEG C × 1.5h oil cooling or water coolings；Ageing treatment：620 DEG C × 4~6h, water cooling；
11) physical and chemical testing, dimension control are carried out after property heat treatment successively, finally obtains 520B precipitation-hardening stainless steel steel Ingot finished product.
It is made annealing treatment after the forging as a preferred embodiment of the above solution, annealing process is that 620 DEG C × 10~12h goes out Stove is air-cooled.
The mould cool time presses formula T (h)=35R as a preferred embodiment of the above solution,2(M) × 1.2, R is mode radius.
The beneficial effects of the invention are as follows：The 520B precipitation-hardening stainless steels of the present invention are a kind of martensitic precipitation hardening stainless Steel has corrosion resistance, high intensity, high rigidity and good welding performance, is suitable for aerospace, medical instrument and machinery system Make equal civil infrastructures field.
Specific implementation mode
520B precipitation-hardening stainless steel steel ingots, chemical composition (wt%) by weight percentage are：C：0.042~0.060； Mn：≤1.00；Si：≤0.65；S：≤0.005；P：≤0.015；Cr：13.0~14.5；Ni：5.0~6.0；Mo：1.30~ 1.80；Cu：1.32~2.00；Nb：0.27~0.45, remaining Fe.
The production method of 520B precipitation-hardening stainless steel steel ingots, includes the following steps：
(1) raw material select：Select S≤0.030%, the steel scraps of P≤0.030% and Cr, Ni, Mo, Cu, Nb alloy；
(2) electric arc furnace smelting：Make C >=0.80%, Si≤0.70%, Mn≤1.0%, Cr≤14.0%, Ni in melting stage ≤ 6.0%, Mo≤1.80%, Cu≤1.8%, Nb≤0.45%, P≤0.020%；The heat of oxidation make decarburized amount >=0.40%, C >= 0.70%, P≤0.008%, S≤0.006%；Reducing agent is added in reduction period molten steel and forms white slag, bath temperature is kept 1700 DEG C, subsequent molten steel is transferred to tundish, and skims in tundish, and level of residue≤1.5kg/t subsequently enters VODC vacuum fines Furnace refines；
(3) VODC vacuum refining furnaces refine：VOD stages, 80~120mbar of vacuum degree, oxygen flow 550M3/ h, argon flow 5M3/h；VCD stages, vacuum degree≤5mbar, 10~15 minutes pumpdown times, argon flow 5M3/h；The VOH stages, by molten steel weight Amount often adds 1% aluminium that 250 DEG C of calculating can be improved, and is warming up to 1650~1670 DEG C, 500~600M of oxygen flow3/ h, vacuum degree 350 ~450mbar, argon flow 5M3/ h adjusts each ingredient to prescribed requirement；VD stages, vacuum degree≤1.0mbar, pumpdown time ＞ 20 minutes, argon flow 5M3/h；
(4) it taps：Molten steel is transferred to ladle at a temperature of 1600 DEG C, and 1.5~2.5kg/t silico-calcium deoxidations are first added in ladle Agent, the swash of wave final deoxidizing when molten steel enters ladle；
(5) it pours into a mould：Molten steel calmness 7~8 minutes, are used in combination argon for protecting pouring, prevent secondary oxidation before cast；
(6) it demoulds：First the mould of progress a period of time is cold, and mould cool time presses formula T (h)=35R2(M) × 1.2, R is mould half Diameter demoulds after cooling；
(7) it anneals：Annealing process is 680 DEG C × 10~15h, is come out of the stove air-cooled.
(8) it forges：Initial forging temperature be 1150 DEG C, final forging temperature >=850 DEG C, forging ratio >=2.0, ratio of elongation >=2.0, always than >=4.0, it is made annealing treatment after forging, annealing process is come out of the stove air-cooled for 620 DEG C × 10~12h；
(9) forging roughing：Roughing is carried out to forging, and is detected using ultrasonic examination；
(10) property heat treatment：Solution treatment is carried out successively：1050 DEG C × 1h water coolings or oil cooling；Intermediate adjustment processing：850 DEG C × 1.5h oil cooling or water coolings；Ageing treatment：620 DEG C × 4~6h, water cooling；
(11) physical and chemical testing, dimension control are carried out after property heat treatment successively, finally obtains 520B precipitation-hardening stainless steels Steel ingot finished product.
Chemical composition test see the table below：
Mechanics Performance Testing see the table below：
By above-mentioned test result it is found that the 520B precipitation-hardening stainless steel steel ingots of the application, compared with original 520B steel：S From being optimized to≤0.005 originally≤0.015, sulphide inculsion is reduced, eliminates sulfide banded segregation；P is from original≤0.030 excellent Change to≤0.015, reduce phosphorous segregation, improves impact flexibility；Room temperature impact work(AKV (J) was increased to >=70 from originally >=55.Together When, EAF (electric arc furnaces)+VODC (vacuum refining furnace)+argon for protecting pouring is used smelting, reduces nonmetallic folder to the maximum extent Sundries improves the degree of purity of molten steel, improves the quality of steel.
The preferred embodiment of the present invention has been described in detail above, it should be understood that those skilled in the art without It needs creative work according to the present invention can conceive and makes many modifications and variations, therefore, all technologies in the art Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea Technical solution, all should be in the protection domain being defined in the patent claims.

Claims (4)

1.520B precipitation-hardening stainless steel steel ingots, which is characterized in that chemical composition (wt%) by weight percentage is：C：0.042 ~0.060；Mn：≤1.00；Si：≤0.65；S：≤0.005；P：≤0.015；Cr：13.0~14.5；Ni：5.0~6.0；Mo： 1.30~1.80；Cu：1.32~2.00；Nb：0.27~0.45, remaining Fe.
The production method of 2.520B precipitation-hardening stainless steel steel ingots, which is characterized in that include the following steps：
1) raw material select：Select S≤0.030%, the steel scraps of P≤0.030% and Cr, Ni, Mo, Cu, Nb alloy；
2) electric arc furnace smelting：Make C >=0.80%, Si≤0.70%, Mn≤1.0% in melting stage, Cr≤14.0%, Ni≤ 6.0%, Mo≤1.80%, Cu≤1.8%, Nb≤0.45%, P≤0.020%；The heat of oxidation make decarburized amount >=0.40%, C >= 0.70%, P≤0.008%, S≤0.006%；Reducing agent is added in reduction period, molten steel and forms white slag, bath temperature is kept 1700 DEG C, subsequent molten steel is transferred to tundish, and skims in tundish, and level of residue≤1.5kg/t subsequently enters VODC vacuum fines Furnace refines；
3) VODC vacuum refining furnaces refine：VOD stages, 80~120mbar of vacuum degree, oxygen flow 550M3/ h, argon flow 5M3/h； VCD stages, vacuum degree≤5mbar, 10~15 minutes pumpdown times, argon flow 5M3/h；The VOH stages are often added by Metal Weight 250 DEG C of calculating can be improved in 1% aluminium, are warming up to 1650~1670 DEG C, 500~600M of oxygen flow3/ h, vacuum degree 350~ 450mbar, argon flow 5M3/ h adjusts each ingredient to prescribed requirement；VD stages, vacuum degree≤1.0mbar, pumpdown time ＞ 20 minutes, argon flow 5M3/h；
4) it taps：Molten steel is transferred to ladle at a temperature of 1600 DEG C, and 1.5~2.5kg/t silico-calcium deoxidiers are first added in ladle, work as steel Swash of wave final deoxidizing when water enters ladle；
5) it pours into a mould：Molten steel calmness 7~8 minutes, are used in combination argon for protecting pouring, prevent secondary oxidation before cast；
6) it demoulds：It is cold first to carry out the mould of a period of time, is demoulded after cooling；
7) it anneals：Annealing process is 680 DEG C × 10~15h, is come out of the stove air-cooled；
8) it forges：Initial forging temperature be 1150 DEG C, final forging temperature >=850 DEG C, forging ratio >=2.0, ratio of elongation >=2.0, always than >= 4.0；
9) forging roughing：Roughing is carried out to forging, and is detected using ultrasonic examination；
10) property heat treatment：Solution treatment is carried out successively：1050 DEG C × 1h water coolings or oil cooling；Intermediate adjustment processing：850℃× 1.5h oil cooling or water cooling；Ageing treatment：620 DEG C × 4~6h, water cooling；
11) physical and chemical testing, dimension control are carried out after property heat treatment successively, finally obtain 520B precipitation-hardening stainless steels steel ingot at Product.
3. the production method of 520B precipitation-hardening stainless steels steel ingot as claimed in claim 2, which is characterized in that carried out after forging Annealing, annealing process are come out of the stove air-cooled for 620 DEG C × 10~12h.
4. the production method of 520B precipitation-hardening stainless steels steel ingot as claimed in claim 2, which is characterized in that mould cool time is pressed Formula T (h)=35R2(M) × 1.2, R is mode radius.
CN201810862324.4A 2018-08-01 2018-08-01 520B precipitation-hardening stainless steels steel ingot and its production method Pending CN108611569A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109504835A (en) * 2018-12-22 2019-03-22 中南大学 A kind of copper tungsten enhancing austenitic stainless steel against corrosion and preparation method thereof
CN111074048A (en) * 2019-12-31 2020-04-28 苏州雷格姆海洋石油设备科技有限公司 Manufacturing method of 17-4PH material high-temperature and high-pressure resistant forging
CN111471940A (en) * 2020-04-29 2020-07-31 钢铁研究总院 High-strength stainless steel rotor and preparation method thereof
CN113088654A (en) * 2021-04-06 2021-07-09 山西太钢不锈钢股份有限公司 Production method for improving macrosegregation of niobium-containing ferrite stainless steel plate
CN113897531A (en) * 2021-09-08 2022-01-07 三鑫重工机械有限公司 Process for vacuum smelting of corrosion-resistant stainless steel by VOD method
CN114317923A (en) * 2021-12-31 2022-04-12 无锡透平叶片有限公司 Hot working process for improving short transverse impact performance of X5CrNiCuNb16-4 turbine blade
CN115558836A (en) * 2022-10-28 2023-01-03 辽宁北祥重工机械制造有限公司 Process method for producing novel martensite precipitation hardening acid-resistant heat-resistant stainless steel FV520 (B) steel ingot

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102021490A (en) * 2010-10-13 2011-04-20 浙江大隆合金钢有限公司 X12CrMoWVNbN10-1-1 high-temperature structural steel and production method thereof
CN102912222A (en) * 2012-10-14 2013-02-06 浙江大隆合金钢有限公司 18MND5 low-alloy structural steel for nuclear power and technical control method for 18MND5 low-alloy structural steel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102021490A (en) * 2010-10-13 2011-04-20 浙江大隆合金钢有限公司 X12CrMoWVNbN10-1-1 high-temperature structural steel and production method thereof
CN102912222A (en) * 2012-10-14 2013-02-06 浙江大隆合金钢有限公司 18MND5 low-alloy structural steel for nuclear power and technical control method for 18MND5 low-alloy structural steel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
牛靖等: "沉淀硬化不锈钢FV520(B)的析出硬化及韧性", 《机械工程学报》 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109504835A (en) * 2018-12-22 2019-03-22 中南大学 A kind of copper tungsten enhancing austenitic stainless steel against corrosion and preparation method thereof
CN109504835B (en) * 2018-12-22 2022-03-15 佛山培根细胞新材料有限公司 Copper-tungsten reinforced corrosion-resistant austenitic stainless steel and preparation method thereof
CN111074048A (en) * 2019-12-31 2020-04-28 苏州雷格姆海洋石油设备科技有限公司 Manufacturing method of 17-4PH material high-temperature and high-pressure resistant forging
CN111471940A (en) * 2020-04-29 2020-07-31 钢铁研究总院 High-strength stainless steel rotor and preparation method thereof
CN111471940B (en) * 2020-04-29 2021-09-10 钢铁研究总院 High-strength stainless steel rotor and preparation method thereof
CN113088654A (en) * 2021-04-06 2021-07-09 山西太钢不锈钢股份有限公司 Production method for improving macrosegregation of niobium-containing ferrite stainless steel plate
CN113088654B (en) * 2021-04-06 2022-09-13 山西太钢不锈钢股份有限公司 Production method for improving macrosegregation of niobium-containing ferrite stainless steel plate
CN113897531A (en) * 2021-09-08 2022-01-07 三鑫重工机械有限公司 Process for vacuum smelting of corrosion-resistant stainless steel by VOD method
CN113897531B (en) * 2021-09-08 2022-12-13 三鑫重工机械有限公司 Process for vacuum smelting of corrosion-resistant stainless steel by VOD method
CN114317923A (en) * 2021-12-31 2022-04-12 无锡透平叶片有限公司 Hot working process for improving short transverse impact performance of X5CrNiCuNb16-4 turbine blade
CN115558836A (en) * 2022-10-28 2023-01-03 辽宁北祥重工机械制造有限公司 Process method for producing novel martensite precipitation hardening acid-resistant heat-resistant stainless steel FV520 (B) steel ingot

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Application publication date: 20181002