CN110066968A - A kind of manufacturing method of precipitation-hardening stainless steel hot rolled plate - Google Patents
A kind of manufacturing method of precipitation-hardening stainless steel hot rolled plate Download PDFInfo
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- CN110066968A CN110066968A CN201910485087.9A CN201910485087A CN110066968A CN 110066968 A CN110066968 A CN 110066968A CN 201910485087 A CN201910485087 A CN 201910485087A CN 110066968 A CN110066968 A CN 110066968A
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- 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
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- 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
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- 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
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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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
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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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention discloses a kind of manufacturing methods of precipitation-hardening stainless steel hot rolled plate, comprising: electrode bar preparation, electroslag remelting, hammer cogging, rolling are become a useful person, and are annealed, and are aligned for the first time, solution treatment, are aligned for the second time, pickling.The manufacturing method of one of present invention precipitation-hardening stainless steel hot rolled plate, using rolling, the straightening process for improving precipitation-hardening stainless steel 05Cr17Ni4Cu4Nb, largely improve the unevenness of plate, it fills the domestic gaps, the even tissue for the 05Cr17Ni4Cu4Nb hot rolled plate produced is consistent, indices reach ASTM A693, ASME SA-693 standard, and plate unevenness is in kind horizontal close to external import.
Description
Technical field
The present invention relates to the technical field of special stainless steel more particularly to a kind of systems of precipitation-hardening stainless steel hot rolled plate
Make method.
Background technique
05Cr17Ni4Cu4Nb is a kind of typical precipitation-hardening stainless steel, has high-intensitive, corrosion-resistant, resistance to oxidation, excellent
The advantages that good mouldability and solderability.It is widely used in the fields such as medical treatment, petroleum, chemical industry, aerospace, nuclear industry, the energy.
The steel can be used as 370 DEG C or less, it is desirable that and wear-resisting, anti-corrosion, high-strength structure part uses, including the transmission devices such as axis, gear, valve,
The fasteners such as pump component and bolt, cushion, washer.In the prior art, for the steel board there are unstable mechanical property, plate is smooth
The problems such as spending poor (practical unevenness 10-20mm/m) causes its application to be extremely limited, so far not formed national standard.
Summary of the invention
To solve drawbacks described above in the prior art, the present invention provides a kind of manufacture of precipitation-hardening stainless steel hot rolled plate
Method, the even tissue of 05Cr17Ni4Cu4Nb hot rolled plate as made from this method is consistent, and indices reach ASTM
A693, ASME SA-693 standard, plate unevenness is in kind horizontal close to external import, and technical scheme is as follows:
The manufacturing method of one of present invention precipitation-hardening stainless steel hot rolled plate, comprising the following steps:
To achieve the above object, the present invention provides a kind of manufacturing methods of precipitation-hardening stainless steel hot rolled plate, special
Sign is, includes the following steps:
Step S101, electrode bar preparation: electric arc furnaces just makes steel water, AOD or VOD furnace is transferred to after slagging-off and is refined, in argon
Electrode bar is poured under gas shielded;
Step S102, electroslag remelting: selected slag charge carries out electroslag remelting to electrode bar under inert gas protection, obtains
ESR ingot;
Step S103, hammer cogging: ESR ingot is forged to slab, forging ratio >=4 of slab using hydraulic press;
Step S104, rolling are become a useful person: the heating of plate blank that step S103 is obtained is rolled to 1160-1200 DEG C using Wide and Thick Slab
Machine rolling is become a useful person;
Annealing: finished product plate obtained in step S104 is gradually heated to by step S105 according to the speed of 150 DEG C/h
650 DEG C, 20h is kept the temperature, air-cooled or heap is cooled to room temperature;
Step S106 is aligned for the first time: being aligned using high-strength steel sheet levelling machine to finished product plate, is aligned for the first time
The unevenness < 5mm/m of finished product plate afterwards;
Solution treatment: the finished product plate that step S106 is obtained gradually is heated to by step S107 according to the speed of 150 DEG C/h
1025-1055 DEG C, 1-2 hours are kept the temperature, scatters after coming out of the stove and is air-cooled to room temperature;
Step S108, second of aligning: aligning finished product plate using high-strength steel sheet levelling machine, second of aligning
The unevenness < 2mm/m of finished product plate afterwards;
Pickling: step S109 carries out pickling using the method for 304 stainless steel of pickling or pickling martensitic stain less steel.
Further, ESR ingot puts into 650 DEG C of heating furnaces below and is slowly heated 8h to 1160-1200 in step S103
DEG C, and 6h or more is kept the temperature at such a temperature, and it then comes out of the stove and starts to forge, 900 DEG C of final forging temperature >, first to electroslag when starting to forge
Ingot carries out round as a ball, drafts≤40mm, and surface casting is brilliant broken, then jumping-up to the 1/2 of ESR ingot original height, then melts down guarantor
Temperature >=40min is forged after coming out of the stove to desired size of plate blank.
Further, the size of ESR ingot obtained in step S102 is φ 550mm, and slag system uses Ca2F-Al2O3Binary
Slag system, quantity of slag 110Kg, wherein Ca2F and Al2O3Mass ratio is 7:3, power-on voltage 77-83V, electric current 10500-
11500A, loading time 30min, the cold 50min after annealing of mould.
Further, the molten steel in step 1 is after external refining, the mass percent of each element are as follows: C0.02-
0.045%, Si0.20-0.60%, Mn0.20-0.60%, P≤0.025%, S≤0.010%, Cr15.0-16.0%,
Ni3.8-4.5%, Cu3-3.4%, Nb0.15-0.35%, surplus Fe.
The manufacturing method of one of present invention precipitation-hardening stainless steel hot rolled plate is compared with prior art, beneficial
Effect are as follows:
1, the present invention is using rolling, the straightening process for improving precipitation-hardening stainless steel 05Cr17Ni4Cu4Nb, largely
On improve the unevenness of plate, fill the domestic gaps.
2, the even tissue for the 05Cr17Ni4Cu4Nb hot rolled plate produced is consistent, indices reach ASTM A693,
ASME SA-693 standard, plate unevenness are in kind horizontal close to external import.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of the manufacturing method of precipitation-hardening stainless steel hot rolled plate in the present invention.
Specific embodiment
Below in conjunction with attached drawing of the invention, technical solution of the present invention is clearly and completely described.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment 1:
As shown in Figure 1, a kind of manufacturing method of precipitation-hardening stainless steel hot rolled plate, includes the following steps:
Step S101, electrode bar preparation: just making steel water using 10 tons of electric arc furnaces, turns 10 tons of AOD refining decarburizations, degassing, takes off
Oxygen, alloying, are poured electrode bar under protection of argon gas;The mass percent of molten steel each element are as follows: C 0.041%;Si is
0.34%;Mn is 0.21%;P is 0.013%;S is 0.002%;Cr is 16.0%;Ni is 4.49%;Cu is 3.90%;Nb is
0.34%;Mo is 0.04%, surplus Fe;
Electroslag remelting: step S102 uses selected slag charge, carries out electroslag remelting under inert gas protection, obtain electroslag
Ingot;
Step S103, hammer cogging: ESR ingot is heated to 1180 DEG C, after keeping the temperature 7h, is opened using the hot forging of 3500 t hydraulic press
Base, size of plate blank are 120 × 870 × 1530 (mm);
Step S104, rolling are become a useful person: by the blank heating of step S103 to 1170 DEG C, and 3h or more are kept the temperature, using 3.3m
Wide and heavy plate mill rolling is become a useful person;
Step S105, annealing: being gradually heated to 650 DEG C for the finished product plate that step 4 obtains according to the speed of 150 DEG C/h,
About 20h is kept the temperature, air-cooled or heap is as cold as room temperature;
Step S106 is aligned for the first time: being aligned using high-strength steel sheet levelling machine to finished product plate, unevenness requirement
Control 5mm/m or less;
Solution treatment: the finished product plate that step S106 is obtained gradually is heated to by step S107 according to the speed of 150 DEG C/h
1040 DEG C, 1.5 hours are kept the temperature, is scattered after coming out of the stove air-cooled to room temperature;
Step S108, second of aligning: aligning finished product plate using high-strength steel sheet levelling machine, unevenness requirement
Control 2mm/m or less;
Pickling: step S109 carries out pickling using the method for 304 stainless steels or martensitic stain less steel.
Further, 8h to 1180 DEG C of heating furnaces slow heating below of 650 DEG C of ESR ingot investment in step S103, and
About 7h is kept the temperature at this temperature, and forging of then coming out of the stove out, final forging temperature guarantees at 900 DEG C or more;First ESR ingot is rolled when opening forging
Circle, surface casts die break by drafts≤40mm, then upset to the 1/2 of steel ingot original height, then melts down heat preservation 50min
Afterwards;It is forged after coming out of the stove to desired size of plate blank.
Further, the size of ESR ingot obtained in step S102 is φ 550mm, and slag system uses Ca2F-Al2O3Binary
Slag system, quantity of slag 110Kg, wherein Ca2F and Al2O3Mass ratio is 7:3, power-on voltage 80V, electric current 11000A, when filling
Between 30min, the cold 50min after annealing of mould.
The present invention is optimized and is improved to the rolling of 05Cr17Ni4Cu4Nb plate and straightening process, and it is equal to improve tissue
Even property and plate flatness;Indices reach ASTM A693, ASME SA-693 standard;The close external import of plate unevenness
It is in kind horizontal.
The sheet mechanical property of the different size obtained by embodiment 1 is as shown in the table:
Standard/thickness | Rm(MPa) | Rp0.2(MPa) | A (%) | Z (%) | HRC |
ASTMA693-13 | ≥1310 | ≥1170 | ≥10 | ≥30 | 40-48 |
ASMESA-693-13 | ≥1310 | ≥1170 | ≥10 | ≥30 | 40-48 |
Thickness δ 18.0mm | 1376 | 1269 | 13.0 | 59 | 42.5 |
Thickness δ 14.0mm | 1392 | 1276 | 13.0 | 58 | 43.0 |
Note: sample heat treating regime is dissolved 1040 DEG C × 1h, air-cooled, timeliness 480 DEG C × 1h, air-cooled.
Embodiment 2:
As shown in Figure 1, a kind of manufacturing method of precipitation-hardening stainless steel hot rolled plate, includes the following steps:
Step S101, electrode bar preparation: just making steel water using 20 tons of electric arc furnaces, turns 20 tons of AOD refining decarburizations, degassing, takes off
Oxygen, alloying, are poured electrode bar under protection of argon gas;The mass percent of molten steel each element are as follows: C 0.042%;Si is
0.34%;Mn is 0.38%;P is 0.021%;S is 0.001%;Cr is 15.3%;Ni is 4.4%;Cu is 3.31%;Nb is
0.26%;Surplus is Fe;
Electroslag remelting: step S102 uses selected slag charge, carries out electroslag remelting under inert gas protection, obtain electroslag
Ingot;
Step S103, hammer cogging: ESR ingot is heated to 1180 DEG C, after keeping the temperature 6h, using 25MN hydraulic press hot forging,
Size of plate blank is 140 × 910 × 2220 (mm);
Step S104, rolling are become a useful person: the blank heating that step S103 is obtained keeps the temperature 3h or more to 1180 DEG C, uses
The rolling of 3.3m wide and heavy plate mill is become a useful person;
Step S105, annealing: being gradually heated to 650 DEG C for the finished product plate that step 4 obtains according to the speed of 150 DEG C/h,
About 20h is kept the temperature, air-cooled or heap is as cold as room temperature;
Step S106 is aligned for the first time: being aligned using high-strength steel sheet levelling machine to finished product plate, unevenness requirement
Control 5mm/m or less;
Solution treatment: the finished product plate that step S106 is obtained gradually is heated to by step S107 according to the speed of 150 DEG C/h
1040 DEG C, 1 hour is kept the temperature, is scattered after coming out of the stove air-cooled to room temperature;
Step S108, second of aligning: aligning finished product plate using high-strength steel sheet levelling machine, unevenness requirement
Control 2mm/m or less;
Pickling: step S109 carries out pickling using the method for 304 stainless steels or martensitic stain less steel.
Further, 8h to 1180 DEG C of heating furnaces slow heating below of 650 DEG C of ESR ingot investment in step S103, and
About 6h is kept the temperature at this temperature, and forging of then coming out of the stove out, final forging temperature guarantees at 900 DEG C or more;First ESR ingot is rolled when opening forging
Circle, surface casts die break by drafts≤40mm, then upset to the 1/2 of steel ingot original height, then melts down heat preservation 50min
Afterwards;It is forged after coming out of the stove to desired size of plate blank.
Further, the size of ESR ingot obtained in step S102 is φ 550mm, and slag system uses Ca2F-Al2O3Binary
Slag system, quantity of slag 110Kg, wherein Ca2F and Al2O3Mass ratio is 7:3, power-on voltage 83V, electric current 11000A, when filling
Between 30min, the cold 50min after annealing of mould.
The sheet mechanical property of the different size obtained by the embodiment 2 is as shown in the table:
Standard/thickness | Rm(MPa) | Rp0.2(MPa) | A (%) | Z (%) | HRC |
ASTMA693-13 | ≥1310 | ≥1170 | ≥10 | ≥30 | 40-48 |
ASMESA-693-13 | ≥1310 | ≥1170 | ≥10 | ≥30 | 40-48 |
Thickness δ 10.0mm | 1473 | 1376 | 14.0 | 51 | 44.1 |
Thickness δ 20.0mm | 1478 | 1369 | 14.0 | 50 | 44.3 |
Note: sample heat treating regime is dissolved 1040 DEG C × 1h, air-cooled, timeliness 480 DEG C × 1h, air-cooled.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (4)
1. a kind of manufacturing method of precipitation-hardening stainless steel hot rolled plate, which comprises the following steps:
Step S101, electrode bar preparation: electric arc furnaces just makes steel water, AOD or VOD furnace is transferred to after slagging-off and is refined, and protects in argon gas
Shield is lower to be poured electrode bar;
Step S102, electroslag remelting: selected slag charge carries out electroslag remelting to electrode bar under inert gas protection, obtains electroslag
Ingot;
Step S103, hammer cogging: ESR ingot is forged to slab, forging ratio >=4 of slab using hydraulic press;
Step S104, rolling are become a useful person: the heating of plate blank that step S103 is obtained is rolled to 1160-1200 DEG C using wide and heavy plate mill
Material is made;
Step S105, annealing: being gradually heated to 650 DEG C for finished product plate obtained in step S104 according to the speed of 150 DEG C/h,
20h is kept the temperature, air-cooled or heap is cooled to room temperature;
Step S106 is aligned for the first time: being aligned using high-strength steel sheet levelling machine to finished product plate, after aligning for the first time
The unevenness < 5mm/m of finished product plate;
Solution treatment: the finished product plate that step S106 is obtained gradually is heated to by step S107 according to the speed of 150 DEG C/h
1025-1055 DEG C, 1-2 hours are kept the temperature, scatters after coming out of the stove and is air-cooled to room temperature;
Step S108, second of aligning: aligning finished product plate using high-strength steel sheet levelling machine, after second is aligned
The unevenness < 2mm/m of finished product plate;
Pickling: step S109 carries out pickling using the method for 304 stainless steel of pickling or pickling martensitic stain less steel.
2. a kind of manufacturing method of precipitation-hardening stainless steel hot rolled plate according to claim 1, which is characterized in that step
Include the following steps: in S103
ESR ingot puts into 650 DEG C of heating furnaces below and is slowly heated 8h to 1160-1200 DEG C, and at such a temperature heat preservation 6h with
On, it then comes out of the stove and starts to forge, it is 900 DEG C of final forging temperature >, first round as a ball to ESR ingot progress when starting to forge, drafts≤
Surface casting crystalline substance is crushed, then jumping-up to the 1/2 of ESR ingot original height, then melts down heat preservation >=40min by 40mm, forges after coming out of the stove
It makes to desired size of plate blank.
3. a kind of manufacturing method of precipitation-hardening stainless steel hot rolled plate according to claim 1, which is characterized in that step
The size of ESR ingot obtained in S102 is φ 550mm, and slag system uses Ca2F-Al2O3Binary slag system, quantity of slag 110Kg, wherein
Ca2F and Al2O3Mass ratio is 7:3, power-on voltage 77-83V, electric current 10500-11500A, loading time 30min, and mould is cold
50min after annealing.
4. a kind of manufacturing method of precipitation-hardening stainless steel hot rolled plate according to claim 1, which is characterized in that step
Molten steel in S101 is after external refining, the mass percent of each element are as follows: C0.02-0.045%, Si0.20-0.60%,
Mn0.20-0.60%, P≤0.025%, S≤0.010%, Cr15.0-16.0%, Ni3.8-4.5%, Cu3-3.4%,
Nb0.15-0.35%, surplus Fe.
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CN113290350A (en) * | 2021-05-19 | 2021-08-24 | 镇江市俊翔电器有限公司 | Metal sheet metal part machining process convenient to connect |
CN113981326A (en) * | 2021-09-30 | 2022-01-28 | 江西宝顺昌特种合金制造有限公司 | 630 stainless steel plate and preparation method thereof |
CN114622127A (en) * | 2022-03-11 | 2022-06-14 | 中国航发北京航空材料研究院 | Preparation method of novel engine oversized fan casing |
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CN113290350A (en) * | 2021-05-19 | 2021-08-24 | 镇江市俊翔电器有限公司 | Metal sheet metal part machining process convenient to connect |
CN113981326A (en) * | 2021-09-30 | 2022-01-28 | 江西宝顺昌特种合金制造有限公司 | 630 stainless steel plate and preparation method thereof |
CN114622127A (en) * | 2022-03-11 | 2022-06-14 | 中国航发北京航空材料研究院 | Preparation method of novel engine oversized fan casing |
CN114622127B (en) * | 2022-03-11 | 2023-03-24 | 中国航发北京航空材料研究院 | Preparation method of novel engine oversized fan casing |
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Application publication date: 20190730 |