CN107385144A - The 4PH smelting processes of precipitation hardening of martensitic stainless steel 17 - Google Patents

The 4PH smelting processes of precipitation hardening of martensitic stainless steel 17 Download PDF

Info

Publication number
CN107385144A
CN107385144A CN201710379236.4A CN201710379236A CN107385144A CN 107385144 A CN107385144 A CN 107385144A CN 201710379236 A CN201710379236 A CN 201710379236A CN 107385144 A CN107385144 A CN 107385144A
Authority
CN
China
Prior art keywords
steel
low
oxygen
temperature
stainless steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710379236.4A
Other languages
Chinese (zh)
Other versions
CN107385144B (en
Inventor
祁跃峰
王志林
赵鹏
李立新
金会业
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Zhongyuan Special Steel Equipment Manufacturing Co Ltd
Original Assignee
Zhongyuan Special Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongyuan Special Steel Co Ltd filed Critical Zhongyuan Special Steel Co Ltd
Priority to CN201710379236.4A priority Critical patent/CN107385144B/en
Publication of CN107385144A publication Critical patent/CN107385144A/en
Application granted granted Critical
Publication of CN107385144B publication Critical patent/CN107385144B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/005—Manufacture of stainless steel
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/064—Dephosphorising; Desulfurising
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising of stainless steel
    • 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
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

The invention belongs to stainless steel smelting field, a kind of more particularly to 4PH smelting processes of precipitation hardening of martensitic stainless steel 17, using EAF/IF LF VOD LF VD IC process route, it is low-phosphorous by electric furnace, the first steel-making liquid of low five-harmful elementses, intermediate frequency melted alloy enters LF refining furnace adjustment chemical composition after being blent with electric furnace steel tapping industry, enter VOD vacuum oxygens after skimming, preliminary reduction, refining furnace is arrived again reduces accurate adjustment alloy comprehensively, VD deaerates, the smelting mode that steel is poured in molding produces low-carbon, low gas, it is low to be mingled with, 17 4PH stainless steels of low five-harmful elementses.The 4PH smelting processes of precipitation hardening of martensitic stainless steel 17 of a kind of low-gas content, low field trash are provided it is an object of the invention to overcome H, O, N content higher the shortcomings that having a strong impact on product performance in the steel that 17 4PH smelt to obtain in the prior art.

Description

Precipitation hardening of martensitic stainless steel 17-4PH smelting processes
Technical field
The invention belongs to stainless steel smelting field, more particularly to a kind of precipitation hardening of martensitic stainless steel 17-4PH smelters Skill.
Background technology
17-4PH has good corrosion resistance, is widely used as typical precipitation hardening of martensitic stainless steel The fields such as Yu Haiyang platform, food manufacturing, space flight.Common 17-4PH is smelted using AOD decarburizations, reduction accurate adjustment alloy tapping warp After weak stirring direct pouring into electrode billet mode, although carbon has obtained effective control under this mode of production, H in steel, O, N content is higher, general H 3-4ppm, oxygen in 20-40ppm, N between 100-200ppm, have a strong impact on the usability of product Can, it is impossible to adapt to the market demand of the low field trash of low gas.
The content of the invention
It is an object of the invention to overcome in the steel that above-mentioned 17-4PH in the prior art smelts to obtain H, O, N content compared with Gao Yan Ghost image rings the shortcomings that product performance and provides a kind of low-gas content, the precipitation hardening of martensitic stainless steel of low field trash 17-4PH smelting processes.
To achieve these goals, the technical proposal of the invention is realized in this way：A kind of precipitation hardening of martensitic is stainless Steel 17-4PH smelting processes, it is as follows the step of the smelting process：
Step S01：Using the relatively low steel scrap of five-harmful elementses, the pig iron as electric furnace raw material, electric furnace is by fusing, oxidation low temperature early stage Dephosphorization, the molten steel of low-phosphorous, low five evil of smelting, electric furnace steel tapping [C]≤0.05%, [P]≤0.003%, [As]≤0.010%, [Sn]≤ 0.006%, [Pb]≤0.005%, [Sb]≤0.005%, [Bi]≤0.005%, tapping process taken off according to ton steel 2-3Kg ferro-aluminums Oxygen avoids the slag that overflows；
Step S02：Using intermediate frequency furnace melted alloy, such as ferrochrome, nickel or copper coin, water is just made steel with electric furnace and is blent；
Step S03：To after step S02 is blent molten steel enter refining furnace and carry out reduction and desulfurization, it is following to adjust chemical composition C: 0.30-0.45%, Si:≤ 0.50%, Mn:0.30-0.50%, P:≤ 0.025%, S:≤ 0.015%, Ni:3.00-5.00%, Cr: 15.0-17.5%, Cu:3.00-5.00%, temperature enter VOD after being skimmed more than 1600 DEG C of bull ladles；
Step S04：Molten steel after step S03 processing is called in into VD tanks, sampling analysis carbon, silicon, manganese, the content of evanohm element, Calculate blowing oxygen quantity, start to vacuumize and start lower rifle vacuum oxygen under vacuum 200mbar, oxygen blast continue to vacuumize after terminating into Row vacuum carbon deoxidization, empty sampling is broken after certain time, then cover cover and be evacuated under 100mbar and add lime, ferrosilicon, aluminium and enter The preliminary reduction of row；
Step S05：By step S04 tentatively reduction after molten steel hang back refining furnace continues reduction deoxidation, according to desired value accurate adjustment into Point；
Step S06：Step S05 accurate adjustments molten steel is hung in into VD tanks again and carries out final degassing, it is ensured that H≤2.0ppm, N are determined after VD ≤100ppm；
Step S07：The molten steel that the weak mixings time of step S06, temperature are met to technique is transported to molding and poured on steel car, by car Electrode billet using argon gas protective casting into required ingot shape；
Step S08：The step S07 electrode billets cast are stripped according to demoulding time, 550-650 DEG C of temperature enters anneal Or hot sending.
In the step S02, according to C：0.3-0.40%, Cr：14-16%, Ni：4-5%, Cu：3-4%, Si≤0.50% are carried out Dispensing is calculated, melting down rear temperature >=1630 DEG C tapping and electric furnace are just made steel water and blent.
The step S03 molten steel hangs in refining furnace according to lime ton steel 1-2kg, calcium carbide ton steel 0.5-1.5kg, aluminum steel ton steel 1.5-2.5 rice carries out deoxidization desulfuration, and transmission process keeps reducing atmosphere with 1~3kg/t of Al powder, and temperature is taken off more than 1630 DEG C of bull ladles Slag；
Lower oxygen gun blowing enters the pre-blowing stage in the step S04：Initial flow blows 2~3min, oxygen pressure >=0.8MPa, with The master that enters to be advanced into for reaction between carbon and oxygen blows the stage, gradually reduces setting vacuum to 100mbar；Step up oxygen flow extremely 1100Nm³/h；Argon flow amount refers to 40~60NL/min；Progressively lower oxygen rifle height, according to reacting feelings in what bent tank of CO concentration The information of condition determines to stop oxygen opportunity, and oxygen blast continues to vacuumize carry out vacuum carbon deoxidization after terminating, and empty sampling is broken after 10min, then cover Upper cover, which continues to take out, adds lime ton steel 4-6kg, ferrosilicon ton steel 3-5kg, aluminium block ton steel 0.5-1.5kg under 100mbar vacuums Tentatively reduced, keep the broken skies of 10-20min, hang back refining furnace.
The step S05 is according to C:0.03-0.05%, Si:0.30-0.50%, Mn:0.30-0.50%, P:≤ 0.025%, S:≤ 0.010%, Ni:3.00-5.00%, Cr:15.0-17.5%, Cu:3.00-5.00%, Nb:0.15-0.45 accurate adjustment compositions.
VD tanks are hung in the step S06 during 1610-1630 DEG C of accurate adjustment liquid steel temperature and carry out final degassing, 15-20min is kept under 0.67mbar, requires to determine H≤2.0ppm, N≤100ppm, weak more than mixing time 8min, temperature after VD 1500-1530 DEG C of bull ladle pours steel.
The calm time according to molten steel temperature >=5 minute, opens and pours 1490 DEG C -1515 DEG C of temperature, using mould in the step S07 Interior argon filling cast.
Good effect is as follows caused by technical scheme：（1）It is low using pressed sheet, shearing material, high-carbon steel scrap etc. The steel scrap of five evils rationally matches somebody with somebody carbon as raw material, avoids using the pig iron, reduces production cost；（2）Using intermediate frequency furnace fusing ferrochrome, The alloys such as copper, nickel, mitigate the refining furnace duration of heat；（3）The molten steel of low-carbon is obtained using VOD vacuum oxygens；（4）Again pass by VOD thoroughly removes H, O, N in steel during alloy adjusts；（5）Avoid molten steel ingress of air secondary using argon for protecting pouring Oxidation；（6）Avoid producing stress cracking using direct heat treatment.
Embodiment
Precipitation hardening of martensitic stainless steel 17-4PH smelting processes, using EAF/IF-LF-VOD-LF-VD-IC technique road Line, composition are as follows：C≤0.07%, Si≤1.0%, Mn≤1.0%, P≤0.025%, S≤0.010%, Ni:3.00-5.00%, Cr: 15.0-17.5%, Cu:3.00-5.00%, Nb:0.15-0.45%；The step of smelting process, is as follows：
Step S01：Using the relatively low steel scrap of five-harmful elementses, the pig iron as electric furnace raw material, electric furnace is by fusing, oxidation low temperature early stage Dephosphorization, the molten steel of low-phosphorous, low five evil of smelting, electric furnace steel tapping [C]≤0.05%, [P]≤0.003%, [As]≤0.010%, [Sn]≤ 0.006%, [Pb]≤0.005%, [Sb]≤0.005%, [Bi]≤0.005%, tapping process taken off according to ton steel 2-3Kg ferro-aluminums Oxygen avoids the slag that overflows；
Step S02：Using alloys such as intermediate frequency furnace fusing ferrochrome, nickel, copper coins, according to C：0.3-0.40%, Cr：14-16%, Ni：4- 5%, Cu：3-4%, Si≤0.50% carry out calculating dispensing, and melting down rear temperature >=1630 DEG C tapping and electric furnace are just made steel water and blent；
Step S03：Molten steel after step S02 is blent is hung in into refining furnace according to lime ton steel 1-2kg, calcium carbide ton steel 0.5- 1.5kg, aluminum steel ton steel 1.5-2.5 rice carry out deoxidation, desulfurization, and transmission process keeps reducing atmosphere with 1~3kg/t of Al powder, according to C:0.30-0.45%, Si:0.30-0.50%, Mn:0.30-0.50%, P:≤ 0.025%, S:≤ 0.015%, Ni:4.00- 5.00%, Cr:15.00-17.00%, Cu:3.00-5.00% adjusting components, temperature are skimmed more than 1600 DEG C of bull ladles；
Step S04：Molten steel after step S03 processing is called in into the alloying element such as VOD tanks, sampling analysis C, Si, Mn, Cr, Cu, Ni Content, oxidation reaction occurs according to C, Si, Mn and oxygen and calculates blowing oxygen quantity, starts to vacuumize under vacuum 200mbar, under Oxygen gun blowing enters the pre-blowing stage：Initial flow blows 2~3min, oxygen pressure >=0.8MPa, enters to advance with reaction between carbon and oxygen The stage of blowing is become owner of, gradually reduces setting vacuum to 100mbar；Oxygen flow is stepped up to 1100Nm3/h；Argon flow amount is joined Examine 40~60NL/min；Progressively lower oxygen rifle height, determine to stop oxygen opportunity according to information such as response situations in CO concentration song, tank, Oxygen blast continues to vacuumize carry out vacuum carbon deoxidization after terminating, empty sampling is broken after 10min, then cover cover continue to take out 100mbar it is true Lime ton steel 4-6kg, ferrosilicon ton steel 3-5kg, aluminium block ton steel 0.5-1.5kg are added under reciprocal of duty cycle tentatively to be reduced, and keep 10- The broken skies of 20min, hang back refining furnace；
Step S05：Molten steel after step S04 tentatively reduction is hung back into refining furnace to continue to reduce deoxidation, according to C after sampling:0.03- 0.05%, Si:0.30-0.50%, Mn:0.30-0.50%, P:≤ 0.025%, S:≤ 0.010%, Ni:3.00-5.00%, Cr: 15.0-17.5%, Cu:3.00-5.00%, Nb:0.15-0.45 accurate adjustment compositions；
Step S06：By step S06 accurate adjustments liquid steel temperature, 1610-1630 DEG C hangs in the final degassing of VD tanks progress, in 0.67mbar Require to determine H≤2.0ppm, N≤100ppm, weak more than mixing time 8min, temperature 1500-1530 after lower holding 15-20min, VD DEG C bull ladle pours steel；
Step S07：The molten steel that the weak mixings time of step S06, temperature are met to technique is transported to molding and poured on steel car, the calm time According to molten steel temperature >=5 minute, open and pour 1490 DEG C -1515 DEG C of temperature, poured into a mould using argon filling in mould, pay attention to poring rate during cast Control, strengthen feeding operation addition covering slag in time；
Step S08：The step S07 electrode billets cast or steel ingot are stripped according to demoulding time, 550-650 DEG C of temperature enters annealing Furnace annealing or hot sending.
Two groups of smeltings, the chemical composition content of two groups of products for smelting to obtain have been carried out according to the smelting process of the present embodiment And in following two tables of gas content：
Chemical composition content（%）Table 1
Gas（ppm）Table 2

Claims (7)

  1. A kind of 1. precipitation hardening of martensitic stainless steel 17-4PH smelting processes, it is characterised in that：The step of smelting process, is as follows：
    Step S01：Using the relatively low steel scrap of five-harmful elementses, the pig iron as electric furnace raw material, electric furnace is by fusing, oxidation low temperature early stage Dephosphorization, the molten steel of low-phosphorous, low five evil of smelting, electric furnace steel tapping [C]≤0.05%, [P]≤0.003%, [As]≤0.010%, [Sn]≤ 0.006%, [Pb]≤0.005%, [Sb]≤0.005%, [Bi]≤0.005%, tapping process taken off according to ton steel 2-3Kg ferro-aluminums Oxygen avoids the slag that overflows；
    Step S02：Using intermediate frequency furnace melted alloy, such as ferrochrome, nickel or copper coin, water is just made steel with electric furnace and is blent；
    Step S03：To after step S02 is blent molten steel enter refining furnace and carry out reduction and desulfurization, it is following to adjust chemical composition C: 0.30-0.45%, Si:≤ 0.50%, Mn:0.30-0.50%, P:≤ 0.025%, S:≤ 0.015%, Ni:3.00-5.00%, Cr: 15.0-17.5%, Cu:3.00-5.00%, temperature enter VOD after being skimmed more than 1600 DEG C of bull ladles；
    Step S04：Molten steel after step S03 processing is called in into VD tanks, sampling analysis carbon, silicon, manganese, the content of evanohm element, Calculate blowing oxygen quantity, start to vacuumize and start lower rifle vacuum oxygen under vacuum 200mbar, oxygen blast continue to vacuumize after terminating into Row vacuum carbon deoxidization, empty sampling is broken after certain time, then cover cover and be evacuated under 100mbar and add lime, ferrosilicon, aluminium and enter The preliminary reduction of row；
    Step S05：By step S04 tentatively reduction after molten steel hang back refining furnace continues reduction deoxidation, according to desired value accurate adjustment into Point；
    Step S06：Step S05 accurate adjustments molten steel is hung in into VD tanks again and carries out final degassing, it is ensured that H≤2.0ppm, N are determined after VD ≤100ppm；
    Step S07：The molten steel that the weak mixings time of step S06, temperature are met to technique is transported to molding and poured on steel car, by car Electrode billet using argon gas protective casting into required ingot shape；
    Step S08：The step S07 electrode billets cast are stripped according to demoulding time, 550-650 DEG C of temperature enters anneal Or hot sending.
  2. 2. precipitation hardening of martensitic stainless steel 17-4PH smelting processes according to claim 1, it is characterised in that：The step In rapid S02, according to C：0.3-0.40%, Cr：14-16%, Ni：4-5%, Cu：3-4%, Si≤0.50% carries out calculating dispensing, melting down Temperature >=1630 DEG C tapping is just made steel water with electric furnace and blent afterwards.
  3. 3. precipitation hardening of martensitic stainless steel 17-4PH smelting processes according to claim 1, it is characterised in that：The step Rapid S03 molten steel hangs in refining furnace and carried out according to lime ton steel 1-2kg, calcium carbide ton steel 0.5-1.5kg, aluminum steel ton steel 1.5-2.5 rice Deoxidization desulfuration, transmission process keep reducing atmosphere with 1~3kg/t of Al powder, and temperature is skimmed more than 1630 DEG C of bull ladles.
  4. 4. precipitation hardening of martensitic stainless steel 17-4PH smelting processes according to claim 1, it is characterised in that：The step Lower oxygen gun blowing enters the pre-blowing stage in rapid S04：Initial flow blows 2~3min, oxygen pressure >=0.8MPa, with reaction between carbon and oxygen The master that enters to be advanced into blow the stage, gradually reduce setting vacuum to 100mbar；Oxygen flow is stepped up to 1100Nm3/h；Argon Throughput refers to 40~60NL/min；Progressively lower oxygen rifle height, determined according to the information of response situation in what bent tank of CO concentration Stop oxygen opportunity, oxygen blast continues to vacuumize carry out vacuum carbon deoxidization after terminating, and empty sampling is broken after 10min, then cover cover and continue to take out Lime ton steel 4-6kg, ferrosilicon ton steel 3-5kg, aluminium block ton steel 0.5-1.5kg is added under 100mbar vacuums tentatively to be reduced, The broken skies of 10-20min are kept, hang back refining furnace.
  5. 5. precipitation hardening of martensitic stainless steel 17-4PH smelting processes according to claim 1, it is characterised in that：The step Rapid S05 is according to C:0.03-0.05%, Si:0.30-0.50%, Mn:0.30-0.50%, P:≤ 0.025%, S:≤ 0.010%, Ni: 3.00-5.00%, Cr:15.0-17.5%, Cu:3.00-5.00%, Nb:0.15-0.45 accurate adjustment compositions.
  6. 6. precipitation hardening of martensitic stainless steel 17-4PH smelting processes according to claim 1, it is characterised in that：The step VD tanks being hung in during 1610-1630 DEG C of accurate adjustment liquid steel temperature in rapid S06 and carrying out final degassing, 15- is kept under 0.67mbar Require to determine H≤2.0ppm, N≤100ppm after 20min, VD, 1500-1530 DEG C of weak more than mixing time 8min, temperature bull ladle pour Steel.
  7. 7. the precipitation hardening of martensitic stainless steel 17-4PH smelting processes according to claim any one of 1-6, its feature exist In：The calm time according to molten steel temperature >=5 minute, opens and pours 1490 DEG C -1515 DEG C of temperature in the step S07, using being filled in mould Argon is poured into a mould.
CN201710379236.4A 2017-05-25 2017-05-25 Precipitation hardening of martensitic stainless steel 17-4PH smelting process Active CN107385144B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710379236.4A CN107385144B (en) 2017-05-25 2017-05-25 Precipitation hardening of martensitic stainless steel 17-4PH smelting process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710379236.4A CN107385144B (en) 2017-05-25 2017-05-25 Precipitation hardening of martensitic stainless steel 17-4PH smelting process

Publications (2)

Publication Number Publication Date
CN107385144A true CN107385144A (en) 2017-11-24
CN107385144B CN107385144B (en) 2019-03-22

Family

ID=60338935

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710379236.4A Active CN107385144B (en) 2017-05-25 2017-05-25 Precipitation hardening of martensitic stainless steel 17-4PH smelting process

Country Status (1)

Country Link
CN (1) CN107385144B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108913983A (en) * 2018-07-31 2018-11-30 河南中原特钢装备制造有限公司 Corrosion resistance and the strong FV520B steel smelting method of impact flexibility
CN109439870A (en) * 2018-12-26 2019-03-08 江阴市恒业锻造有限公司 The method for improving 17-4PH martensite aged stainless steel forging low-temperature impact work based on organizational controls
CN110423859A (en) * 2019-08-21 2019-11-08 河南中原特钢装备制造有限公司 A kind of low-phosphorous smelting process of martensitic stain less steel main shaft
CN110565028A (en) * 2019-10-28 2019-12-13 河南中原特钢装备制造有限公司 Smelting method of sulfur-containing martensitic precipitation hardening stainless steel
CN111118409A (en) * 2019-12-13 2020-05-08 河南中原特钢装备制造有限公司 Low-carbon martensitic stainless steel for valve box and smelting method thereof
CN111519111A (en) * 2020-04-23 2020-08-11 江阴市劲松科技有限公司 Process for smelting precipitation hardening steel
WO2021084025A1 (en) 2019-10-31 2021-05-06 Deutsche Edelstahlwerke Specialty Steel Gmbh & Co. Kg Corrosion-resistant and precipitation-hardening steel, method for producing a steel component, and steel component
CN112853044A (en) * 2021-01-06 2021-05-28 江阴华润制钢有限公司 Ultra-low carbon stainless steel HP2-13Cr deoxidation and desulfurization process
CN113549732A (en) * 2021-07-23 2021-10-26 二重（德阳）重型装备有限公司 Smelting method of steel grade with Sb less than or equal to 0.001wt%
CN113943902A (en) * 2021-10-21 2022-01-18 宝武特冶航研科技有限公司 Low-gas-content controlled smelting method for high-silicon high-titanium aluminum-containing stainless steel
CN115948695A (en) * 2022-11-25 2023-04-11 烟台华新不锈钢有限公司 High-chromium martensitic stainless steel and production and manufacturing method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090196784A1 (en) * 2008-02-06 2009-08-06 Fedchun Vladimir A Low cost high strength martensitic stainless steel
CN101538686A (en) * 2008-03-21 2009-09-23 宝山钢铁股份有限公司 Martensite precipitation hardening stainless steel for structural member and manufacturing method thereof
CN103114244A (en) * 2012-12-06 2013-05-22 通裕重工股份有限公司 Martensite stainless steel smelting process
CN104328353A (en) * 2014-12-01 2015-02-04 什邡新工金属材料有限公司 Rare-earth-type 0Cr17Ni4Cu4Nb martensitic precipitation-hardening stainless steel and preparation method thereof
CN106636953A (en) * 2016-10-14 2017-05-10 中原特钢股份有限公司 Method for smelting martensitic stainless steel P91 for boiler pipe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090196784A1 (en) * 2008-02-06 2009-08-06 Fedchun Vladimir A Low cost high strength martensitic stainless steel
CN101538686A (en) * 2008-03-21 2009-09-23 宝山钢铁股份有限公司 Martensite precipitation hardening stainless steel for structural member and manufacturing method thereof
CN103114244A (en) * 2012-12-06 2013-05-22 通裕重工股份有限公司 Martensite stainless steel smelting process
CN104328353A (en) * 2014-12-01 2015-02-04 什邡新工金属材料有限公司 Rare-earth-type 0Cr17Ni4Cu4Nb martensitic precipitation-hardening stainless steel and preparation method thereof
CN104328353B (en) * 2014-12-01 2017-08-11 什邡新工金属材料有限公司 A kind of rare-earth type 0Cr17Ni4Cu4Nb martensitic precipitations and preparation method thereof
CN106636953A (en) * 2016-10-14 2017-05-10 中原特钢股份有限公司 Method for smelting martensitic stainless steel P91 for boiler pipe

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108913983A (en) * 2018-07-31 2018-11-30 河南中原特钢装备制造有限公司 Corrosion resistance and the strong FV520B steel smelting method of impact flexibility
CN108913983B (en) * 2018-07-31 2021-02-26 河南中原特钢装备制造有限公司 Smelting method of FV520B steel with strong corrosion resistance and impact toughness
CN109439870A (en) * 2018-12-26 2019-03-08 江阴市恒业锻造有限公司 The method for improving 17-4PH martensite aged stainless steel forging low-temperature impact work based on organizational controls
CN110423859A (en) * 2019-08-21 2019-11-08 河南中原特钢装备制造有限公司 A kind of low-phosphorous smelting process of martensitic stain less steel main shaft
CN110565028A (en) * 2019-10-28 2019-12-13 河南中原特钢装备制造有限公司 Smelting method of sulfur-containing martensitic precipitation hardening stainless steel
WO2021084025A1 (en) 2019-10-31 2021-05-06 Deutsche Edelstahlwerke Specialty Steel Gmbh & Co. Kg Corrosion-resistant and precipitation-hardening steel, method for producing a steel component, and steel component
CN111118409A (en) * 2019-12-13 2020-05-08 河南中原特钢装备制造有限公司 Low-carbon martensitic stainless steel for valve box and smelting method thereof
CN111519111A (en) * 2020-04-23 2020-08-11 江阴市劲松科技有限公司 Process for smelting precipitation hardening steel
CN112853044A (en) * 2021-01-06 2021-05-28 江阴华润制钢有限公司 Ultra-low carbon stainless steel HP2-13Cr deoxidation and desulfurization process
CN113549732A (en) * 2021-07-23 2021-10-26 二重（德阳）重型装备有限公司 Smelting method of steel grade with Sb less than or equal to 0.001wt%
CN113943902A (en) * 2021-10-21 2022-01-18 宝武特冶航研科技有限公司 Low-gas-content controlled smelting method for high-silicon high-titanium aluminum-containing stainless steel
CN115948695A (en) * 2022-11-25 2023-04-11 烟台华新不锈钢有限公司 High-chromium martensitic stainless steel and production and manufacturing method thereof

Also Published As

Publication number Publication date
CN107385144B (en) 2019-03-22

Similar Documents

Publication Publication Date Title
CN107385144B (en) Precipitation hardening of martensitic stainless steel 17-4PH smelting process
CN106148844B (en) A kind of preparation method of sulfur-bearing ultralow titanium high standard bearing steel
CN106636953B (en) A kind of effective martensitic stain less steel P91 smelting processes of boiler
CN103160729B (en) Medium-carbon microalloyed steel for engineering machinery caterpillar chain piece and production process thereof
CN100462466C (en) Method of producing low-temperature high-toughness steel and steel plate
CN102400030B (en) Method for adding nitrogen element into smelting molten steel of vacuum induction furnace
CN110565012B (en) Continuous casting manufacturing method of ultra-high chromium ferrite stainless steel
CN103741006B (en) A kind of preparation method containing the low nitrogen stainless steel of Ti
CN103045948B (en) High-chromium steel and manufacturing method thereof
CN108330245A (en) A kind of high-purity smelting process of stainless steel
CN102248142A (en) Method for producing medium and low carbon aluminum killed steel
CN106148821B (en) Phosphorate the production technology of high-strength IF steel
CN104946972A (en) Steel disc strip for diode lead and production technology of steel disc strip
CN113061799B (en) High-cleanliness spring steel and production method thereof
CN105537549B (en) The production method of 100 DEG C of low temperature seamless steel pipe steel continuous cast round billets
CN108893682B (en) Die steel billet and preparation method thereof
CN113789472A (en) Alloy cast steel, and manufacturing method and application thereof
CN105483501A (en) Method for smelting phosphorus-containing ultra-low carbon steel
CN107447157A (en) A kind of cold-forging steel and its manufacturing process
CN109576577A (en) The production method of II steel of atmospheric corrosion resistance welding wire TH550-NQ-
CN102433501A (en) High strength and toughness strip steel and manufacturing method thereof
CN104357761A (en) Sulfur-containing free-cutting die steel smelting technique
CN105695661A (en) Method for smelting Q235B steel through CSP (compact strip production) line
CN113430449B (en) Smelting and continuous casting production process of sulfur-containing free-cutting steel ASTM1141
CN103031488B (en) Manufacturing method of hot rolled steel and hot rolled steel

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20180806

Address after: 459000 531 Industrial Park, Tiger Hill Industrial Cluster, Jiyuan City, Jiaozuo, Henan

Applicant after: Henan Zhongyuan special steel equipment manufacturing Co., Ltd.

Address before: 454450 Xiao Zhai, Jiyuan Town, Jiyuan City, Henan

Applicant before: Zhongyuan Special Steel Co., Ltd.

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant