CN109468561A - A kind of preparation method of GH3625 alloy strip steel rolled stock - Google Patents
A kind of preparation method of GH3625 alloy strip steel rolled stock Download PDFInfo
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- CN109468561A CN109468561A CN201811425555.5A CN201811425555A CN109468561A CN 109468561 A CN109468561 A CN 109468561A CN 201811425555 A CN201811425555 A CN 201811425555A CN 109468561 A CN109468561 A CN 109468561A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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Abstract
The invention belongs to field of metal preparation, and in particular to a kind of preparation method of GH3625 alloy strip steel rolled stock.Technical scheme is as follows: a kind of preparation method of GH3625 alloy strip steel rolled stock, process flow includes: melting, forging, hot rolling, solution heat treatment+pickling, the heat treatment of cold rolled annealed and finished product is repeated, forging and hot-rolled temperature are 1120 DEG C~1160 DEG C, total deformation 35%~70%, every fire time deflection 15-35%；1050 DEG C -1150 DEG C of solid solution temperature；During cold rolled annealed, deflection is 20-45% per pass；1050 DEG C -1150 DEG C of intermediate anneal temperature, last time intermediate annealing and product handling system temperature are 950 DEG C~1030 DEG C.The preparation method of GH3625 alloy strip steel rolled stock provided by the invention controls the deflection of made-up belt using the method for cold rolling plus annealing, reduces inhomogeneous deformation, obtains uniform, suitable tissue, obtains qualified accurate band, and meet higher requirement.
Description
Technical field
The invention belongs to field of metal preparation, and in particular to a kind of preparation method of GH3625 alloy strip steel rolled stock.
Background technique
GH3625 alloy Ni-Cr base solution strengthening type wrought superalloy is main solution strengthening member with Cr, Mo and Nb
Element, maximum operation (service) temperature is up to 950 DEG C.It has been widely used in foreign countries, which has excellent comprehensive mechanical property, can
To be processed into plate, stick, silk, band and forging.Manufacture aerial motor spare part, aerospace structure member and chemical industry is widely used in set
It is standby.
For GH3625 alloy, there are following main problems:
(1) material difficulty of processing is big:
The difficult moulding material of GH3625 alloy, the content of the intensified elements such as Mo, Nb is higher in alloy, hot processing temperature range
Narrow, cold working plasticity is lower, resistance of deformation is larger.The difficulty of hot and cold processing is larger.
(2) profiling thereof technical study not system, unstable quality
The factor for influencing alloy strip steel rolled stock forming is various, including many aspects such as material, equipment, technique, and closes between each parameter
System is complicated.Due to not produced before the thin wide-format webs of this thickness of GH3625 alloy δ 0.2mm × 200mm, equipment is joined
The deflection of the optimized design of several reasonable selection, size and material, different passages, rate of deformation, and eliminate stress and move back
The control of fiery system and mutual matching, need to go deep into systematic research.Such as pass deformation must control it is certain
Degree can obtain perfect recrystallization tissue, but deflection is excessive to cause made-up belt to harden, performance is exceeded or cracking plus
Work deteriorates.Further, since aviation is very high with the requirement of ribbon dimension precision and surface quality, even if band can shape,
Structure property is qualified, if size is not achieved defined precision or surface and has the defects of folding, crackle, pockmark, still will lead to
Band is scrapped.
Summary of the invention
The present invention provides a kind of preparation method of GH3625 alloy strip steel rolled stock, using the method for cold rolling plus annealing, controls made-up belt
Deflection, reduce inhomogeneous deformation, obtain uniform, suitable tissue, obtain qualified accurate band, and meet higher make
With requiring.
Technical scheme is as follows:
A kind of preparation method of GH3625 alloy strip steel rolled stock, process flow include: melting, forging, hot rolling, solution heat treatment+
The heat treatment of cold rolled annealed and finished product is repeated in pickling, and forging and hot-rolled temperature are 1120 DEG C~1160 DEG C, total deformation 35%
~70%, every fire time deflection 15-35%；1050 DEG C -1150 DEG C of solid solution temperature；During cold rolled annealed, become per pass
Shape amount is 20-45%；1050 DEG C -1150 DEG C of intermediate anneal temperature, last time intermediate annealing and product handling system temperature are 950 DEG C
~1030 DEG C.
The preparation method of the GH3625 alloy strip steel rolled stock, carries out cold rolling at room temperature, and mill speed is controlled in 0.3-1.0
Meter per second；During cold rolled annealed, using ammonolysis craft online annealing, tape running speed control is 0.6-3.5 ms/min, before the rolling
In phase cold-rolled process, moved back twice when apart from 1-2 rolling process of finished product thickness between twice annealing using small deformation amount 20%-30%
Deflection 30%-45% between fire；Finished product solution heat treatment is carried out after finished product, using ammonolysis craft online annealing, treatment temperature
It is 950 DEG C~1030 DEG C, tape running speed is 0.6-3.5 ms/min.
The preparation method of the GH3625 alloy strip steel rolled stock, concrete technology flow process are as follows:
(1) electroslag remelting melting: is added using vacuum induction；
(2) forge: heating temperature is 1120 DEG C~1160 DEG C, controls deflection 35%~70%, is swaged into slab；
(3) hot rolling: heating temperature is 1120 DEG C~1160 DEG C, controls deflection 35%~70%, is swaged into made-up belt；
(4) solution heat treatment+pickling: 1050 DEG C~1150 DEG C of solid solution temperature, duration 30-60 minutes is kept the temperature, later
Surface acid-washing；
(5) cold rolled annealed: during cold rolled annealed, before the rolling in phase cold-rolled process, small change is used between twice annealing
Shape amount 20%-30%, deflection 30%-45% when apart from 1-2 rolling process of finished product thickness, between twice annealing；Cold-rolled process
In, it is required to anneal per pass, in addition to last time intermediate annealing process, annealing temperature is 1050-1150 DEG C, last time
Intermediate anneal temperature is 950-1030 DEG C, and tape running speed control is 0.6-3.5 ms/min；
(6) finished product solution heat treatment: solution heat treatment temperature at 950 DEG C~1030 DEG C, tape running speed is 0.6-3.5 meters/
Minute.
The invention has the benefit that on multiple rollers cold calender, cold rolling GH3625 alloy strip steel rolled stock at room temperature, cold-rolled
Cheng Zhong controls deflection per pass, reduces inhomogeneous deformation in cold-rolled process to the greatest extent, reduces deformation of strip unevenness per pass, makes
Band tissue recrystallizes per pass, and do not crack, pockmark the defects of.Last two passages large deformation and low temperature move back
Fire processing, obtains fine grained texture.With dimensional accuracy height, the bright and clean advantage of strip surface saves raw material and working hour, technique letter
It is single, economical, profitable.
Specific embodiment
Embodiment 1
Through vacuum induction plus electroslag melting GH3625 alloy cast ingot, 20mm heavy slab, deflection are forged at 1120 DEG C
70% or so, it is heated to 1120 DEG C and is rolled into 4mm made-up belt, then through solution heat treatment in 1100 DEG C × 30 minutes, pickling, then by this
Band carries out cold rolling, annealing 5 times repeatedly, is rolled into 0.7mm × 200mm band.Operation of rolling parameter is shown in Table 1.
1 embodiment of table, 1 operation of rolling parameter
Embodiment 2
Through vacuum induction plus electroslag melting GH3625 alloy cast ingot, 20mm heavy slab, deflection are forged at 1150 DEG C
70% or so, it is heated to 1150 DEG C and is rolled into 4mm made-up belt, then through solution heat treatment in 1030 DEG C × 30 minutes, pickling, then by this
Band carries out cold rolling, annealing 6 times repeatedly, is rolled into 0.5mm × 200mm band.Operation of rolling parameter is shown in Table 2.
2 embodiment of table, 2 operation of rolling parameter
Embodiment 3
Through 3625 alloy cast ingot of vacuum induction plus electroslag melting GH, 20mm heavy slab, deflection are forged at 1130 DEG C
70% or so, it is heated to 1130 DEG C and is rolled into 4mm made-up belt, then through solution heat treatment in 1020 DEG C × 30 minutes, pickling, then by this
Band carries out cold rolling, annealing 9 times repeatedly, is rolled into 0.2mm × 200mm band.Operation of rolling parameter is shown in Table 3.
3 embodiment of table, 3 operation of rolling parameter list
GH3625 alloy strip steel rolled stock mechanical property obtained is shown in Table 4:
4 GH3625 alloy strip steel rolled stock mechanical property of table
Claims (3)
1. a kind of preparation method of GH3625 alloy strip steel rolled stock, which is characterized in that process flow includes: melting, forging, hot rolling, consolidates
The heat treatment of cold rolled annealed and finished product is repeated in molten heat treatment+pickling, and forging and hot-rolled temperature are 1120 DEG C~1160 DEG C, always
Deflection 35%~70%, every fire time deflection 15-35%；1050 DEG C -1150 DEG C of solid solution temperature；Cold rolled annealed process
In, deflection is 20-45% per pass；1050 DEG C -1150 DEG C of intermediate anneal temperature, last time intermediate annealing and product handling system
Temperature is 950 DEG C~1030 DEG C.
2. the preparation method of GH3625 alloy strip steel rolled stock according to claim 1, which is characterized in that carry out at room temperature cold
It rolls, mill speed is controlled in 0.3-1.0 meter per second；During cold rolled annealed, using ammonolysis craft online annealing, tape running speed control
It is 0.6-3.5 ms/min, before the rolling in phase cold-rolled process, small deformation amount 20%-30% is used between twice annealing, works as distance
Deflection 30%-45% when 1-2 rolling process of finished product thickness, between twice annealing；Finished product solution heat treatment is carried out after finished product, is adopted
With ammonolysis craft online annealing, treatment temperature is 950 DEG C~1030 DEG C, and tape running speed is 0.6-3.5 ms/min.
3. the preparation method of GH3625 alloy strip steel rolled stock according to claim 1, which is characterized in that concrete technology flow process is such as
Under:
(1) electroslag remelting melting: is added using vacuum induction；
(2) forge: heating temperature is 1120 DEG C~1160 DEG C, controls deflection 35%~70%, is swaged into slab；
(3) hot rolling: heating temperature is 1120 DEG C~1160 DEG C, controls deflection 35%~70%, is swaged into made-up belt；
(4) solution heat treatment+pickling: 1050 DEG C~1150 DEG C of solid solution temperature, keep the temperature duration 30-60 minutes, rear surface
Pickling；
(5) cold rolled annealed: during cold rolled annealed, before the rolling in phase cold-rolled process, small deformation amount is used between twice annealing
20%-30%, deflection 30%-45% when apart from 1-2 rolling process of finished product thickness, between twice annealing；In cold-rolled process, often
Passage is required to anneal, and in addition to last time intermediate annealing process, annealing temperature is 1050-1150 DEG C, and last time is intermediate
Annealing temperature is 950-1030 DEG C, and tape running speed control is 0.6-3.5 ms/min；
(6) finished product solution heat treatment: for solution heat treatment temperature at 950 DEG C~1030 DEG C, tape running speed is 0.6-3.5 ms/min.
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| CN201811425555.5A CN109468561B (en) | 2018-11-27 | 2018-11-27 | Preparation method of GH3625 alloy strip |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111304566A (en) * | 2020-03-06 | 2020-06-19 | 东北特殊钢集团股份有限公司 | Heat treatment method of hard GH5605 high-temperature alloy cold-rolled strip |
| CN112813369A (en) * | 2020-12-31 | 2021-05-18 | 北京钢研高纳科技股份有限公司 | High-strength high-elasticity high-plasticity nickel-based high-temperature alloy strip and preparation process thereof |
| CN114086092A (en) * | 2021-11-30 | 2022-02-25 | 成都先进金属材料产业技术研究院股份有限公司 | Method for preparing nickel-based superalloy ultrathin strip |
| CN114293068A (en) * | 2021-12-27 | 2022-04-08 | 上海康晟航材科技股份有限公司 | Nickel-based wrought superalloy for coke reactor and preparation method thereof |
| CN114703434A (en) * | 2022-06-08 | 2022-07-05 | 中国科学院金属研究所 | Preparation method of Haynes214 alloy strip foil |
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| US4231795A (en) * | 1978-06-22 | 1980-11-04 | The United States Of America As Represented By The United States Department Of Energy | High weldability nickel-base superalloy |
| US4714499A (en) * | 1986-10-01 | 1987-12-22 | National Forge Company | Full length forging method for producing large section, large mass cylindrical sleeves of alloy 625 |
| CN106378365A (en) * | 2016-09-07 | 2017-02-08 | 重庆科技学院 | Preparation method of GH625 high-temperature alloy tube blank |
| CN106676331A (en) * | 2016-12-22 | 2017-05-17 | 钢铁研究总院 | High-temperature-resistant high-elastic nickel-chromium alloy strip and preparation method thereof |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4231795A (en) * | 1978-06-22 | 1980-11-04 | The United States Of America As Represented By The United States Department Of Energy | High weldability nickel-base superalloy |
| US4714499A (en) * | 1986-10-01 | 1987-12-22 | National Forge Company | Full length forging method for producing large section, large mass cylindrical sleeves of alloy 625 |
| CN106378365A (en) * | 2016-09-07 | 2017-02-08 | 重庆科技学院 | Preparation method of GH625 high-temperature alloy tube blank |
| CN106676331A (en) * | 2016-12-22 | 2017-05-17 | 钢铁研究总院 | High-temperature-resistant high-elastic nickel-chromium alloy strip and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111304566A (en) * | 2020-03-06 | 2020-06-19 | 东北特殊钢集团股份有限公司 | Heat treatment method of hard GH5605 high-temperature alloy cold-rolled strip |
| CN112813369A (en) * | 2020-12-31 | 2021-05-18 | 北京钢研高纳科技股份有限公司 | High-strength high-elasticity high-plasticity nickel-based high-temperature alloy strip and preparation process thereof |
| CN112813369B (en) * | 2020-12-31 | 2022-04-12 | 北京钢研高纳科技股份有限公司 | High-strength high-elasticity high-plasticity nickel-based high-temperature alloy strip and preparation process thereof |
| CN114086092A (en) * | 2021-11-30 | 2022-02-25 | 成都先进金属材料产业技术研究院股份有限公司 | Method for preparing nickel-based superalloy ultrathin strip |
| CN114293068A (en) * | 2021-12-27 | 2022-04-08 | 上海康晟航材科技股份有限公司 | Nickel-based wrought superalloy for coke reactor and preparation method thereof |
| CN114703434A (en) * | 2022-06-08 | 2022-07-05 | 中国科学院金属研究所 | Preparation method of Haynes214 alloy strip foil |
| CN114703434B (en) * | 2022-06-08 | 2022-10-18 | 中国科学院金属研究所 | Preparation method of Haynes214 alloy strip foil |
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