CN108504834A - A kind of production method of Mo ultralow-carbon martensitic stainless steel cut deal - Google Patents

A kind of production method of Mo ultralow-carbon martensitic stainless steel cut deal Download PDF

Info

Publication number
CN108504834A
CN108504834A CN201810446681.2A CN201810446681A CN108504834A CN 108504834 A CN108504834 A CN 108504834A CN 201810446681 A CN201810446681 A CN 201810446681A CN 108504834 A CN108504834 A CN 108504834A
Authority
CN
China
Prior art keywords
rolling
temperature
ultralow
martensitic stainless
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
CN201810446681.2A
Other languages
Chinese (zh)
Other versions
CN108504834B (en
Inventor
张坤
王若钢
李新玲
于金洲
林亚桥
于峰
杨军
李黎明
刘立强
吴铎
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.)
Angang Steel Co Ltd
Original Assignee
Angang 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 Angang Steel Co Ltd filed Critical Angang Steel Co Ltd
Priority to CN201810446681.2A priority Critical patent/CN108504834B/en
Publication of CN108504834A publication Critical patent/CN108504834A/en
Application granted granted Critical
Publication of CN108504834B publication Critical patent/CN108504834B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • 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

Abstract

The present invention relates to a kind of production methods of Mo ultralow-carbon martensitic stainless steel cut deal, include the following steps：1) slab is cleared up；2) heating of plate blank：Each section heating temperature of steel billet must not exceed 1240 DEG C, 1100~1200 DEG C of tapping temperature；3) high-pressure water descaling before open rolling closes roughing in the operation of rolling to the roller-way cooling water in the strong section of heat；4) start rolling temperature >=1000 DEG C, 900~980 DEG C of finishing temperature；5) preceding two pass deformation rate≤15% is rolled, extreme trace carries out surface de-scaling after rolling；6) it rolls rear steel plate and is cooled to offline stacking slow cooling at 300~500 DEG C；Advantage is：Average mechanical property is：620~690Mpa of yield strength, 820~900Mpa of tensile strength, elongation percentage 15.5%~24.3%.

Description

A kind of production method of Mo ultralow-carbon martensitic stainless steel cut deal
Technical field
The present invention relates to a kind of production methods of Mo ultralow-carbon martensitic stainless steel cut deal.
Background technology
As hydroelectric generation industry rapidly develops, thickness is the cut deal Mo ultralow-carbon martensitic stainless steel of 20-100mm, especially It is 00Cr13Ni5Mo martensitic stain less steels because having excellent corrosion resistance, and can pass through different heat treatment process pair Its performance is adjusted, and is generally considered good corrosion resistant alloy, is had broad application prospects.
Invention content
In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a kind of Mo ultralow-carbon martensitic stainless steel cut deals Production method improves mechanical property of steel plate.
To achieve the above object, the invention is realized by the following technical scheme：
A kind of production method of Mo ultralow-carbon martensitic stainless steel cut deal, including following technological process：Molten iron pretreatment- Converter smelting-LF refining-RH refining-continuous casting-slab cleaning-heating of plate blank-rolling-burial pit stacking slow cooling-heat Processing-service check-inspection-storage, specifically includes following steps：
1) slab is cleared up：It clears up depth single side and is no more than 40mm, slab corresponding surface same position cleaning depth summation does not surpass 60mm is crossed, clear position breadth depth ratio is more than 6:1；
2) heating of plate blank：Each section heating temperature of steel billet must not exceed 1240 DEG C, 1100~1200 DEG C of tapping temperature, in stove 3~6 hours total times；
3) high-pressure water descaling before open rolling closes roughing in the operation of rolling to the roller-way cooling water in the strong section of heat, and controls and roll It is 40~50m that roller, which cools down water flow velocity,3/h；
4) start rolling temperature >=1000 DEG C, 900~980 DEG C of finishing temperature；
5) preceding two pass deformation rate≤15% is rolled；Surface de-scaling is not required in the operation of rolling, extreme trace carries out surface after rolling De-scaling；
6) it rolls rear steel plate and is cooled to offline stacking slow cooling at 300~500 DEG C, and use hot steel plate shop fixtures lid quilt, when slow cooling Between >=36 hours；
7) it is heat-treated：High tempering, 550~650 DEG C of furnace temperature, time inside furnace 2~5min/mm are air-cooled.
The chemical composition comprises the following components in percentage by weight of the Mo ultralow-carbon martensitic stainless steel includes：
C≤0.05%, Si≤0.80%, Mn:0.3%-1.1%, Cr:10.0%~17.0%, Mo:0.1%~ 1.2%, Ni:2.5%~7.0%, P≤0.020%, S≤0.010%, remaining is Fe and inevitable impurity.
Compared with prior art, the beneficial effects of the invention are as follows：
Using the 00Cr13Ni5Mo martensitic stain less steels of the production method production of the present invention, property indices reach Desirable, average mechanical property are：620~690Mpa of yield strength, 820~900Mpa of tensile strength, elongation percentage 15.5%~24.3%.
Specific implementation mode
The present invention is described in detail below, it should be noted that the implementation embodiment party not limited to the following of the present invention Formula.
The steel trade mark of Mo ultralow-carbon martensitic stainless steel：00Cr13Ni5Mo, chemical composition comprises the following components in percentage by weight include：C ≤ 0.05%, Si≤0.80%, Mn:0.3%-1.1%, Cr:10.0%~17.0%, Mo:0.1%~1.2%, Ni:2.5% ~7.0%, P≤0.020%, S≤0.010%, remaining is Fe and inevitable impurity.
The production method of Mo ultralow-carbon martensitic stainless steel cut deal, including following technological process：Molten iron pretreatment-converter At smelting-LF refining-RH refining-continuous casting-slab cleaning-heating of plate blank-rolling-burial pit stacking slow cooling-heat Reason-service check-inspection-storage, specifically includes following steps：
1) slab is cleared up：It clears up depth single side and is no more than 40mm, slab corresponding surface same position cleaning depth summation does not surpass 60mm is crossed, clear position breadth depth ratio is more than 6:1；
2) heating of plate blank：Each section heating temperature of steel billet must not exceed 1240 DEG C, 1100~1200 DEG C of tapping temperature, in stove 3~6 hours total times；
3) high-pressure water descaling before open rolling closes roughing in the operation of rolling to the roller-way cooling water in the strong section of heat, and controls and roll It is 40~50m that roller, which cools down water flow velocity,3/h；
4) start rolling temperature >=1000 DEG C, 900~980 DEG C of finishing temperature；
5) preceding two pass deformation rate≤15% is rolled；Surface de-scaling is not required in the operation of rolling, extreme trace carries out surface after rolling De-scaling；
6) it rolls rear steel plate and is cooled to offline stacking slow cooling at 300~500 DEG C, and use hot steel plate shop fixtures lid quilt, when slow cooling Between >=36 hours；
7) it is heat-treated：High tempering, 550~650 DEG C of furnace temperature, time inside furnace 2~5min/mm are air-cooled.
00Cr13Ni5Mo martensitic stainless steels are finally obtained, property indices reach desirable, mean force Learning performance is：620~690Mpa of yield strength, 820~900Mpa of tensile strength, elongation percentage 15.5%~24.3%.
Embodiment 1：
The steel trade mark of Mo ultralow-carbon martensitic stainless steel：00Cr13Ni5Mo, chemical composition comprises the following components in percentage by weight include：
C：0.032%, Si：0.52%, Mn:0.6%, Cr:14.2%, Mo:0.4%, Ni:3.8%, P≤0.020%, S ≤ 0.010%, remaining is Fe and inevitable impurity.
The production method of Mo ultralow-carbon martensitic stainless steel cut deal, including following technological process：Molten iron pretreatment-converter At smelting-LF refining-RH refining-continuous casting-slab cleaning-heating of plate blank-rolling-burial pit stacking slow cooling-heat Reason-service check-inspection-storage, specifically includes following steps：
1) slab is cleared up：The defects of surface should not have horizontal, longitudinal crack, slag inclusion to scab, sticking to mould, which allows to clear up, It is cleared up depth single side and is no more than 40mm, and slab corresponding surface same position clears up depth summation and is no more than 60mm, and clear position is wide Deep ratio is more than 6:1；
2) heating of plate blank：Each section heating temperature of steel billet must not exceed 1240 DEG C, 1150 DEG C of tapping temperature, in stove total time It is 40 minutes 3 hours；
3) high-pressure water descaling before open rolling can repeatedly roll preceding de-scaling depending on dephosphorization situation；Roughing to heat is closed in the operation of rolling to rectify The roller-way cooling water in section, and roll cooling water flow velocity is adjusted to 42~48m3/h；
4) 1150 DEG C of start rolling temperature, 980 DEG C of finishing temperature；
5) preceding two pass deformation rate≤15% is rolled；Surface de-scaling is not required in the operation of rolling, extreme trace carries out surface after rolling De-scaling；
6) it rolls rear steel plate and is cooled to offline stacking slow cooling at 480 DEG C, and use hot steel plate shop fixtures lid quilt, temperature retention time 38 is small When；
7) it is heat-treated：High tempering, 610 DEG C of furnace temperature, time inside furnace 2.8min/mm are air-cooled.
00Cr13Ni5Mo martensitic stainless steels are finally obtained, property indices reach desirable, mean force Learning performance is：620~690MPa of yield strength, 830~900Mpa of tensile strength, elongation percentage 15.5%~24.3%.
Embodiment 2：
The steel trade mark of Mo ultralow-carbon martensitic stainless steel：00Cr13Ni5Mo, chemical composition comprises the following components in percentage by weight include：
C：0.029%, Si：0.50%, Mn:0.6%, Cr:14.3%, Mo:0.45%, Ni:3.9%, P≤0.020%, S≤0.010%, remaining is Fe and inevitable impurity.
The production method of Mo ultralow-carbon martensitic stainless steel cut deal (thickness 20-100mm), including following technological process： Molten iron pretreatment-converter smelting-LF refining-RH refining-continuous casting-slabs cleaning-heating of plate blank-rolling-burial pit Stacking slow cooling-heat treatment-service check-inspection-storage, specifically includes following steps：
1) slab is cleared up：The defects of surface should not have horizontal, longitudinal crack, slag inclusion to scab, sticking to mould, which allows to clear up, It is cleared up depth single side and is no more than 40mm, and slab corresponding surface same position clears up depth summation and is no more than 60mm, and clear position is wide Deep ratio is more than 6:1；
2) heating of plate blank：Each section heating temperature of steel billet must not exceed 1240 DEG C, 1150 DEG C of tapping temperature, in stove total time It is 40 minutes 3 hours；
3) high-pressure water descaling before open rolling can repeatedly roll preceding de-scaling depending on dephosphorization situation；Roughing to heat is closed in the operation of rolling to rectify The roller-way cooling water in section, and turn down roll cooling water (cooling water flow is by 70~80m3/ h is adjusted to 40~50m3/h)；
4) 1154 DEG C of start rolling temperature, 982 DEG C of finishing temperature；
5) preceding two pass deformation rate≤15% is rolled；Surface de-scaling is not required in the operation of rolling, extreme trace carries out surface after rolling De-scaling；
6) it rolls rear steel plate and is cooled to offline stacking slow cooling at 488 DEG C, and use hot steel plate shop fixtures lid quilt, temperature retention time 38 is small When；
7) it is heat-treated：High tempering, 610 DEG C of furnace temperature, time inside furnace 3min/mm are air-cooled.
00Cr13Ni5Mo martensitic stainless steels are finally obtained, property indices reach desirable, mean force Learning performance is：625~688MPa of yield strength, 820~897Mpa of tensile strength, elongation percentage 15.8~24.0%.

Claims (2)

1. a kind of production method of Mo ultralow-carbon martensitic stainless steel cut deal, including following technological process：Molten iron pretreatment-turn At stove smelting-LF refining-RH refining-continuous casting-slab cleaning-heating of plate blank-rolling-burial pit stacking slow cooling-heat Reason-service check-inspection-storage, which is characterized in that specifically include following steps：
1) slab is cleared up：It clears up depth single side and is no more than 40mm, slab corresponding surface same position cleaning depth summation is no more than 60mm, clear position breadth depth ratio are more than 6:1；
2) heating of plate blank：Each section heating temperature of steel billet must not exceed 1240 DEG C, 1100~1200 DEG C of tapping temperature, when stove is total Between 3~6 hours；
3) high-pressure water descaling before open rolling closes roughing in the operation of rolling to the roller-way cooling water in the strong section of heat, and it is cold to control roll But water flow velocity is 40~50m3/h；
4) start rolling temperature >=1000 DEG C, 900~980 DEG C of finishing temperature；
5) preceding two pass deformation rate≤15% is rolled；Surface de-scaling is not required in the operation of rolling, extreme trace carries out surface de-scaling after rolling；
6) it rolls rear steel plate and is cooled to offline stacking slow cooling at 300~500 DEG C, and use hot steel plate shop fixtures lid quilt, temperature retention time >= 36 hours；
7) it is heat-treated：High tempering, 550~650 DEG C of furnace temperature, time inside furnace 2~5min/mm are air-cooled.
2. a kind of production method of Mo ultralow-carbon martensitic stainless steel cut deal according to claim 1, which is characterized in that institute The chemical composition comprises the following components in percentage by weight for the Mo ultralow-carbon martensitic stainless steel stated includes：
C≤0.05%, Si≤0.80%, Mn:0.3%-1.1%, Cr:10.0%~17.0%, Mo:0.1%~1.2%, Ni: 2.5%~7.0%, P≤0.020%, S≤0.010%, remaining is Fe and inevitable impurity.
CN201810446681.2A 2018-05-11 2018-05-11 Production method of ultra-low carbon martensitic stainless steel medium plate Active CN108504834B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810446681.2A CN108504834B (en) 2018-05-11 2018-05-11 Production method of ultra-low carbon martensitic stainless steel medium plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810446681.2A CN108504834B (en) 2018-05-11 2018-05-11 Production method of ultra-low carbon martensitic stainless steel medium plate

Publications (2)

Publication Number Publication Date
CN108504834A true CN108504834A (en) 2018-09-07
CN108504834B CN108504834B (en) 2020-02-18

Family

ID=63400727

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810446681.2A Active CN108504834B (en) 2018-05-11 2018-05-11 Production method of ultra-low carbon martensitic stainless steel medium plate

Country Status (1)

Country Link
CN (1) CN108504834B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114345940A (en) * 2022-01-07 2022-04-15 鞍钢股份有限公司 Shape control method of martensitic stainless steel thick plate for high-hardness die

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101956146A (en) * 2010-10-12 2011-01-26 西安建筑科技大学 High strength super-martensitic stainless steel for oil and gas pipelines and preparation method thereof
CN105132820A (en) * 2015-09-21 2015-12-09 舞阳钢铁有限责任公司 High-strength martensite stainless steel plate and production method thereof
CN107699803A (en) * 2017-09-29 2018-02-16 上海交通大学 A kind of Ultra-low carbon cryogenic steel and its Technology for Heating Processing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101956146A (en) * 2010-10-12 2011-01-26 西安建筑科技大学 High strength super-martensitic stainless steel for oil and gas pipelines and preparation method thereof
CN105132820A (en) * 2015-09-21 2015-12-09 舞阳钢铁有限责任公司 High-strength martensite stainless steel plate and production method thereof
CN107699803A (en) * 2017-09-29 2018-02-16 上海交通大学 A kind of Ultra-low carbon cryogenic steel and its Technology for Heating Processing

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
熊中实: "《中国钢铁产品（上）》", 31 August 1995, 中国物资出版社 *
霍晓阳: "《轧制技术基础》", 31 October 2013, 哈尔滨工业大学出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114345940A (en) * 2022-01-07 2022-04-15 鞍钢股份有限公司 Shape control method of martensitic stainless steel thick plate for high-hardness die

Also Published As

Publication number Publication date
CN108504834B (en) 2020-02-18

Similar Documents

Publication Publication Date Title
CN104525560B (en) Effective control method of the 30mm cut deal pitted skins of straight carbon steel/Nb bearing steel 20
CN103212571B (en) Method for producing oxide scale capable of preventing steel plate surface from getting rusty
CN103710507B (en) A kind of preparation method of low nickel duplex stainless steel hot-rolled sheet coil
CN101704026B (en) Method for controlling pitting on surface of medium steel plate
CN110438416A (en) A method of eliminating ultra-wide high-nitrogen austenitic stainless steel surface crack of plate
CN110438414A (en) A method of eliminating ultra-wide ferritic stainless steel surface crack of plate
CN109881091A (en) A kind of high-strength weathering steel strip and its production method
CN111676355B (en) Online solution treatment process for austenitic stainless steel plate
CN102268520B (en) Heat treatment method for high-strength wear-resistant steel plates
CN107419194A (en) A kind of processing method of super austenitic stainless steel coiled sheet
CN110484817A (en) A method of eliminating ultra-wide economizing type two phase stainless steel surface crack of plate
CN106987773A (en) A kind of high strength steel plate and its board-shape control method
CN112267011B (en) Multifunctional stainless steel plate solid solution heat treatment process and device
CN106636747A (en) Manufacturing method for producing commercial pure titanium plate by adopting double annealing of heavy and medium plate mill
CN107790506A (en) A kind of Surfaces of Hot Rolled Strip processing method
CN108385034B (en) LGB-Q & T method for 1000 MPa-grade hydroelectric steel plate with thickness not greater than 100mm
CN110453148A (en) A kind of ultra-wide economizing type two phase stainless steel cut deal and its manufacturing method
CN106702270B (en) Think gauge great surface quality hot rolling opening plate and its manufacture method
CN104588418A (en) Method for overcoming defect of pocks on surface of ultra-low carbon steel
CN110157979B (en) Rolling method for improving surface quality of steel plate
CN108504834A (en) A kind of production method of Mo ultralow-carbon martensitic stainless steel cut deal
CN101524706A (en) Method for rolling low-carbon high-manganese steel continuously-cast blank in one heat
CN103409686A (en) Production method of Q345D steel plate
CN109797275A (en) It forges high manganese steel frog manganese and pitches the tough heat treatment production method of edema with the heart involved
CN111424221B (en) Stainless steel plate for lamination and manufacturing method thereof

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
GR01 Patent grant
GR01 Patent grant