CN106048416B - A kind of control method of precipitation hardenable martensitic stain less steel delta ferrite - Google Patents
A kind of control method of precipitation hardenable martensitic stain less steel delta ferrite Download PDFInfo
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- CN106048416B CN106048416B CN201610534880.XA CN201610534880A CN106048416B CN 106048416 B CN106048416 B CN 106048416B CN 201610534880 A CN201610534880 A CN 201610534880A CN 106048416 B CN106048416 B CN 106048416B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
-
- 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
- C22C38/02—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
- C22C38/48—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
- C21D2211/005—Ferrite
-
- 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
- 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
- Y02P10/25—Process efficiency
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- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of control methods of precipitation hardenable martensitic stain less steel delta ferrite, by weight percentage, including C：0.045~0.05%、Si：0.1~0.3%、Mn：0.85~0.9%、P：≤0.030%、S：≤0.010%、Cr：15.2~15.5%、Ni：4.25~4.4%、Cu：3.3~3.5%、Nb：0.20 ~ 0.25% and surplus Fe；Take the melting in non-vacuum induction furnace of required element；Then the solution being smelted into is poured into a mould and electrode bar is made in tapping with the rare earth element ce for being added 0.8 1.0 kgs/tonne is flowed；Electrode bar obtained is subjected to electroslag secondary remelting, electroslag ingot is made；ESR ingot obtained is packed into heating furnace, forging of coming out of the stove is become a useful person.Stainless steel material even tissue obtained is produced through the invention, and energy stability contorting delta ferrite level≤0.5% has good economic benefit and social benefit to the larger corrosion resisting property and service life for improving alloy material.
Description
Technical field
The present invention relates to a kind of control method of stainless steel delta ferrite, specially a kind of precipitation hardenable martensite is stainless
The control method of steel delta ferrite belongs to material applied technical field.
Background technology
Precipitation hardenable martensite stainless steel material has high intensity, toughness and corrosion resistance, is widely used in
The fields such as Aeronautics and Astronautics, electric power, oil, chemical industry, machine-building.But since it contains higher ferrite former, such as
Cr, Si etc., on the one hand, durings traditional smelting, electroslag etc., it is difficult to avoid dendritic segregation, lead to the richness of ferrite element
Collection is easy to form delta ferrite, Cr members is rich in delta ferrite so as to cause the tissue of precipitation hardenable martensite stainless steel material
There is Cr-depleted region so as to cause remaining tissue in element, and the difference of the current potential thus brought will aggravate the corrosion of material, on the other hand,
And existing method production stainless steel material nonuniform organization obtained, the delta ferrite level of the stainless steel material of manufacture are more than
0.5%, the low and traditional manufacturing approach craft of corrosion resisting property and service life to make alloy material is complicated, manufacturing cost
It is high.
Invention content
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of precipitation hardenable martensitic stain less steel δ iron
The control method of ferritic meets the requirement under complex work environment.
The present invention is achieved through the following technical solutions above-mentioned purpose, a kind of precipitation hardenable martensitic stain less steel δ iron element
The control method of body, in terms of weight percent %, including C：0.045~0.05% 、Si：0.1~0.3% 、Mn：0.85~0.9%、P：
≤0.030%、S：≤0.010%、Cr：15.2~15.5%、Ni：4.25~4.4%、Cu：3.3~3.5%、Nb：0.20 ~ 0.25% and
Surplus Fe；
Steps are as follows for its control method：
Step A, the melting in non-vacuum induction furnace of required element, 1580 ~ 1640 DEG C of smelting temperature are taken；In fusion process
The content for adjusting each element, makes its weight ratio meet design requirement, is smelted into solution；
Step B, the solution being smelted into step A is added in tapping with stream to 0.8-1.0 kgs/tonne of rare earth element
Then Ce is poured into a mould and electrode bar is made；
Step C, electrode bar made from step B is subjected to electroslag secondary remelting, electroslag ingot is made；
Step D, ESR ingot made from step C is packed into heating furnace, is heated to 1180-1220 DEG C, after held for some time
Forging of coming out of the stove is become a useful person.
Preferably, the pouring temperature in the step B is controlled at 1530 DEG C ~ 1550 DEG C.
Preferably, in step C, slag charge used in electroslag remelting, the ratio CaF of each content2:Al2O3:CaO:MgO=80:10:5:5
(%)。
Preferably, in the step C, when electroslag remelting, it is 4.2 ~ 4.8Kg/min to control molten speed.
Preferably, in the step D, according to steel ingot diameter calculation, soaking time 1.2-1.5min/mm.
Preferably, in step D, technique is pulled out using two upsettings two when forging.
The beneficial effects of the invention are as follows：Prepared by the control method of this kind of precipitation hardenable martensitic stain less steel delta ferrite
Stainless steel material even tissue, energy stability contorting delta ferrite level≤0.5%, to which larger improves the anti-corrosion of alloy material
Performance and service life have good economic benefit and social benefit, there is good economic benefit and social benefit, are suitble to promote
It uses.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one：
A kind of control method of precipitation hardenable martensitic stain less steel delta ferrite, steps are as follows for control method：
Step A, it takes in terms of weight percent %, including C：0.045~0.05% 、Si：0.1~0.3% 、Mn：0.85~
0.9%、P：≤0.030%、S：≤0.010%、Cr：15.2~15.5%、Ni：4.25~4.4%、Cu：3.3~3.5%、Nb：0.20~
0.25% and surplus Fe meltings in non-vacuum induction furnace, 1580 ~ 1640 DEG C of smelting temperature；Each member is adjusted in fusion process
The content of element, makes its weight ratio meet design requirement, is smelted into solution；
Step B, the solution being smelted into step A is added to 0.9 kg/tonne of rare earth element ce in tapping with stream, so
It pours into a mould afterwards and electrode bar is made；
Step C, electrode bar made from step B is subjected to electroslag secondary remelting, electroslag ingot is made；
Step D, ESR ingot made from step C is packed into heating furnace, is heated to 1200 DEG C, forging of coming out of the stove after held for some time
Cause material.
Pouring temperature in the step B is controlled at 1530 DEG C ~ 1550 DEG C；In step C, slag charge used in electroslag remelting, respectively
The ratio CaF of content2:Al2O3:CaO:MgO=80:10:5:5(%)；In the step C, when electroslag remelting, control molten speed for 4.2 ~
4.8Kg/min；In the step D, according to steel ingot diameter calculation, soaking time 1.2-1.5min/mm；In step D, forging
Technique is pulled out in bis- upsettings two of Shi Caiyong.
Embodiment two：
A kind of control method of precipitation hardenable martensitic stain less steel delta ferrite, steps are as follows for control method：
Step A, it takes in terms of weight percent %, including C：0.045~0.05% 、Si：0.1~0.3% 、Mn：0.85~
0.9%、P：≤0.030%、S：≤0.010%、Cr：15.2~15.5%、Ni：4.25~4.4%、Cu：3.3~3.5%、Nb：0.20~
0.25% and surplus Fe meltings in non-vacuum induction furnace, 1580 ~ 1640 DEG C of smelting temperature；Each member is adjusted in fusion process
The content of element, makes its weight ratio meet design requirement, is smelted into solution；
Step B, the solution being smelted into step A is added to 1.0 kgs/tonne of rare earth element ce in tapping with stream, so
It pours into a mould afterwards and electrode bar is made；
Step C, electrode bar made from step B is subjected to electroslag secondary remelting, electroslag ingot is made；
Step D, ESR ingot made from step C is packed into heating furnace, is heated to 1220 DEG C, forging of coming out of the stove after held for some time
Cause material.
Pouring temperature in the step B is controlled at 1530 DEG C ~ 1550 DEG C；In step C, slag charge used in electroslag remelting, respectively
The ratio CaF of content2:Al2O3:CaO:MgO=80:10:5:5(%)；In the step C, when electroslag remelting, control molten speed for 4.2 ~
4.8Kg/min；In the step D, according to steel ingot diameter calculation, soaking time 1.2-1.5min/mm；In step D, forging
Technique is pulled out in bis- upsettings two of Shi Caiyong.
Embodiment three：
A kind of control method of precipitation hardenable martensitic stain less steel delta ferrite, steps are as follows for control method：
Step A, it takes in terms of weight percent %, including C：0.045~0.05% 、Si：0.1~0.3% 、Mn：0.85~
0.9%、P：≤0.030%、S：≤0.010%、Cr：15.2~15.5%、Ni：4.25~4.4%、Cu：3.3~3.5%、Nb：0.20~
0.25% and surplus Fe meltings in non-vacuum induction furnace, 1580 ~ 1640 DEG C of smelting temperature；Each member is adjusted in fusion process
The content of element, makes its weight ratio meet design requirement, is smelted into solution；
Step B, the solution being smelted into step A is added to 1.0 kgs/tonne of rare earth element ce in tapping with stream, so
It pours into a mould afterwards and electrode bar is made；
Step C, electrode bar made from step B is subjected to electroslag secondary remelting, electroslag ingot is made；
Step D, ESR ingot made from step C is packed into heating furnace, is heated to 1220 DEG C, forging of coming out of the stove after held for some time
Cause material.
Pouring temperature in the step B is controlled at 1530 DEG C ~ 1550 DEG C；In step C, slag charge used in electroslag remelting, respectively
The ratio CaF of content2:Al2O3:CaO:MgO=80:10:5:5(%)；In the step C, when electroslag remelting, control molten speed for 4.2 ~
4.8Kg/min；In the step D, according to steel ingot diameter calculation, soaking time 1.2-1.5min/mm；In step D, forging
Technique is pulled out in bis- upsettings two of Shi Caiyong.
It, can stability contorting delta ferrite level according to stainless steel material prepared by embodiment one, embodiment two and embodiment three
≤ 0.5%, to the larger corrosion resisting property and service life for improving alloy material, it disclosure satisfy that the use of its working environment
It is required that.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (5)
1. a kind of control method of precipitation hardenable martensitic stain less steel delta ferrite, which is characterized in that by weight percentage,
Including C：0.045~0.05%, Si：0.1~0.3%, Mn：0.85~0.9%, P：≤ 0.030%, S：≤ 0.010%, Cr：
15.2~15.5%, Ni：4.25~4.4%, Cu：3.3~3.5%, Nb：0.20~0.25% and surplus Fe and；
Steps are as follows for its control method：
Step A, the melting in non-vacuum induction furnace of required element, 1580~1640 DEG C of smelting temperature are taken；It is adjusted in fusion process
The content for saving each element, makes its weight ratio meet design requirement, is smelted into melt；
Step B, the melt being smelted into step A is added to 0.8-1.0 kgs/tonne of rare earth element ce in tapping with stream, so
It pours into a mould afterwards and electrode bar is made；
Step C, electrode bar made from step B is subjected to electroslag secondary remelting, electroslag ingot is made；
Step D, ESR ingot made from step C is packed into heating furnace, is heated to 1180-1220 DEG C, comes out of the stove after held for some time
Forging is become a useful person；
In step C, the ratio of slag charge used in electroslag remelting, each content is：
CaF2:Al2O3:CaO:MgO=80:10:5:5.
2. a kind of control method of precipitation hardenable martensitic stain less steel delta ferrite according to claim 1, feature exist
In：Pouring temperature in the step B is controlled at 1530 DEG C~1550 DEG C.
3. a kind of control method of precipitation hardenable martensitic stain less steel delta ferrite according to claim 1, feature exist
In：In the step C, when electroslag remelting, it is 4.2~4.8Kg/min to control molten speed.
4. a kind of control method of precipitation hardenable martensitic stain less steel delta ferrite according to claim 1, feature exist
In：In the step D, according to steel ingot diameter calculation, soaking time 1.2-1.5min/mm.
5. a kind of control method of precipitation hardenable martensitic stain less steel delta ferrite according to claim 1, feature exist
In：In step D, technique is pulled out using two upsettings two when forging.
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| CN106381374A (en) * | 2016-11-30 | 2017-02-08 | 四川六合锻造股份有限公司 | Method for improving transverse impact toughness of 1Cr12Ni3Mo2VN |
| CN110066968A (en) * | 2018-07-26 | 2019-07-30 | 西安汇丰精密合金制造有限公司 | A kind of manufacturing method of precipitation-hardening stainless steel hot rolled plate |
| CN110565004A (en) * | 2019-09-25 | 2019-12-13 | 四川六合特种金属材料股份有限公司 | Production method for reducing hot working cracking tendency of Mn18Cr18N retaining ring steel |
| CN112593059B (en) * | 2020-12-02 | 2022-05-24 | 成都先进金属材料产业技术研究院有限公司 | Thermal deformation method for reducing delta ferrite content in martensitic stainless steel |
| CN113981326B (en) * | 2021-09-30 | 2022-05-10 | 江西宝顺昌特种合金制造有限公司 | 630 stainless steel plate and preparation method thereof |
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| CN103290229B (en) * | 2013-05-09 | 2015-02-25 | 四川六合锻造股份有限公司 | Method for optimizing X12CrMoWVNbN10-1-1 electroslag remelting slag system |
| CN104313278B (en) * | 2014-10-23 | 2016-08-17 | 北京科技大学 | Delta ferrite level control method in a kind of martensite type refractory steel |
| 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 |
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Address after: 621700 West Section of Baolun Road, Henan Industrial Park, Jiangyou City, Mianyang City, Sichuan Province Patentee after: Sichuan Liuhe Special Metal Materials Co., Ltd. Address before: 621700 West Section of Baolun Road, Henan Industrial Park, Jiangyou City, Mianyang City, Sichuan Province Patentee before: Sichuan Liuhe Forging Company Ltd. |