CN1277937C - Rolling and cogging method for high-temperature alloy GH1015 - Google Patents
Rolling and cogging method for high-temperature alloy GH1015 Download PDFInfo
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- CN1277937C CN1277937C CN 200410025103 CN200410025103A CN1277937C CN 1277937 C CN1277937 C CN 1277937C CN 200410025103 CN200410025103 CN 200410025103 CN 200410025103 A CN200410025103 A CN 200410025103A CN 1277937 C CN1277937 C CN 1277937C
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- 238000005096 rolling process Methods 0.000 title claims abstract description 51
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 31
- 239000000956 alloy Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000002791 soaking Methods 0.000 claims abstract description 16
- 229910000601 superalloy Inorganic materials 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 239000002826 coolant Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 238000004321 preservation Methods 0.000 abstract 4
- 239000002893 slag Substances 0.000 abstract 4
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000005242 forging Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 241000167854 Bourreria succulenta Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Abstract
The present invention relates to a producing method for rolling and cogging high-temperature alloy GH1015, which is characterized in that the hot processing of using a soaking furnace for heating an electric slag ingot and the two-fire rolling treatment of a cogging mill is used for cogging a blank. The present invention has the following steps: step 1, first-fire heating treatment: the temperature in a furnace when the electric slag ingot is sent in the furnace is not higher than 700 DEG C, and the heat preservation is carried out for one hour; the electric slag ingot is heated to the temperature of 900 DEG C at the speed which is not higher than 60 DEG C/h, and the heat preservation is carried out for 1 hour; the temperature is raised to 1180 DEG C at the speed which is not higher than 80 DEG C/h, and the heat preservation is carried out for 3.5 hours; the electric slag ingot is discharged from a soaking furnace when the temperature difference of the top surface and the bottom surface is not higher than 20 DEG C; step 2, first-fire cogging treatment: the preheating temperature of a roller is 120 DEG C, the rolling-start temperature is not lower than 1100 DEG C, and the final rolling temperature is not lower than 1000 DEG C; the roller speed is not higher than 20 revolutions per minute, the rolling reduction is not higher than 30mm, and the number of rolling passes is not higher than 15; step 3, second-fire heating treatment: the heat preservation is carried out for 80 minutes at the temperature of 1170 DEG C, and the furnace discharging operation is carried out when the temperature difference of the top surface and the bottom surface is not higher than 20 DEG C; step 4, second-fire cogging treatment: the roller is previously heated, the rolling-start temperature is not lower than 1100 DEG C, and the final rolling temperature is not lower than 1000 DEG C; the roller speed is not higher than 20 revolutions per minute, the roller speed of the pass of a finished.
Description
Technical field
The present invention relates to the hot-work cogging production method of metallurgy industry superalloy, refer in particular to the hot-work cogging production method of solution strengthening sections based high-temperature alloy.
Background technology
Superalloy is the necessary important meals material of modern aeroengine, rocket engine.It can bear life-time service under the big stress in high temperature (referring generally to 600～1000 ℃) oxidizing atmosphere and under the exhaust gas corrosion condition.Superalloy generally can be divided into iron-base superalloy and nickel base superalloy; Iron-base superalloy generally can be divided into solution strengthening iron-base superalloy and ageing strengthening iron-base superalloy.
Superalloy GH1015 is a kind of solution strengthening iron-base superalloy, is mainly used in the aeroengine combustor liner of working below 900 ℃ the limit is installed.GH1015 is a variety name code name of superalloy, alloying level is than higher, has higher high temperature strength, plasticity is poor, resistance to deformation is big, phase structure is an inhomogeneity, the recrystallization temperature height, characteristics such as thermal conductivity is little, and the thermal processing distortion temperature range is narrow, therefore, for a long time, the production technique of GH1015 superalloy rod finished product adopts " starting material preparation → medium-frequency induction furnace is smelted; be cast into φ 220～φ 325mm electrode bar → surface grinding → electroslag remelting furnace, is smelt the inferior hot-work of a plurality of fire of φ 360～φ 430mm ESR ingot → forging press, and cogging becomes 130～140mm alloy preform → flaw detection; surface grinding → rolling mill is rolled into the alloy bar → flaw detection of φ 70mm trimmed size; finishing; check; → warehouse-in " basically.
The hot-work cogging technics of traditional GH1015 superalloy ingot depends on to forge and finishes, adopt " hot-work that a plurality of fire of φ 360～φ 430mm ESR ingot → forging press are inferior; cogging becomes 130～140mm alloy preform ", be characterized in: industrial scale is little, production capacity is low, produce difficulty in batches, and raw material metal consumption is big, metallurgical manufacturing cost height.The mode of production of this " slow ox formula " can not satisfy the demand of market to the GH1015 alloy bar material.
Summary of the invention
The present invention develops a kind of production method of GH1015 superalloy rolling-cogging; substitute forging press with blooming mill and carry out the hot-work cogging; stable, the good GH1015 steel billet of surface quality of material amount in rolling out; the realization large-scale industrial is produced; greatly improved productive efficiency, shortened the production cycle, raw material metal consumes little; reduce metallurgical manufacturing cost greatly, satisfied user and market demand.
The production method of superalloy GH1015 rolling-cogging provided by the invention is characterized in that adopting the rolling hot-work cogging of soaking pit heating ESR ingot+blooming mill two fire, produces the GH1015 steel billet:
Cogged ingot first fire is rolling:
(1) soaking pit heating alloy pig requires: (A) 1.5～2.0 tons of ESR ingot individual cigarette weights (φ 360～φ 430mm), and 600～700 ℃ of the charging temperatures of alloy pig are incubated 0.8～1.3 hour; (B) speed with 40～60 ℃/h is warming up to 880～950 ℃, is incubated 0.8～1.3 hour; (C) be warming up to 1165～1190 ℃ with the speed of 60～80 ℃/h again; (D) 1165～1190 ℃ of insulations are 3.0～3.5 hours, between soak alloy pig pursue to prop up and stand up (temperature head that reduces the alloy pig male and female face); (E) alloy pig male and female face temperature head≤20 ℃, alloy pig goes out soaking pit hot-work cogging, and it is rolling to enter blooming mill first fire;
(2) blooming mill hot-work cogging requires: before (A) rolling, close the water coolant of roll earlier, the water coolant of bearing shell suitably turns down, and avoids the water coolant of bearing shell to be splashed to the body of roll; (B) 80～150 ℃ of roll preheating temperatures (can by rolling 4～5 earlier on other steel ingot of row) allow rolling GH1015; (C) start rolling temperature of alloy pig 〉=1100 ℃, finishing temperature 〉=1000 ℃; The biting speed of blooming roll≤20 rev/min; (D) (draught is too big, and chink easily takes place the steel ingot rolled piece for draught 20～30mm; Draught is too little, influences the productivity of blooming mill); Draught deviation≤the 3mm of the draught of each passage and reduction schedule regulation; (E) (if the bloom pass number is too many, on the one hand, the steel billet rolled piece is longer, places difficulty during the soaking pit heating for rolling road number of times 10～15 passages of first fire; On the other hand, make the rolling temperature of rolled piece lower, influence the rolling quality of rolled piece); (F) rolled piece melts down and continues heating; Cogged ingot second fire is rolling:
(3) the strip plate requirement is melted down in the soaking pit heating: (A) the first fiery rolled piece melts down heating, and 1160～1190 ℃ of Heating temperatures are incubated 65～90 fens kinds; (B) when insulation pursue steel ingot and stands up, and reduces the temperature head of steel ingot male and female face, guarantees male and female face temperature head≤20 ℃ of rolled piece, and (C) rolled piece is come out of the stove, and it is fiery rolling to enter blooming mill second;
(4) before blooming mill hot-work cogging requires (A) second fire rolling, close the roll water coolant earlier, the water coolant of bearing shell still suitably turns down, and avoids the water coolant of bearing shell to be splashed to the body of roll; (B) 80～150 ℃ of roll preheating temperatures (can by rolling 4～5 earlier on other steel ingot of row) allow rolling GH1015; (C) start rolling temperature 〉=1100 ℃, finishing temperature 〉=1000 ℃; (D) biting speed of roll≤20 rev/min, biting speed≤10 of finished product K1, K2, K3 passage (last three passages of the cogging of steel ingot hot-work just) rev/min, and, after rolled piece is nipped, rolled piece mill length 200～500mm promptly stops to withdraw from, and continues normally to nip rolling (avoiding the rolled piece end to tear curling round the roll occurs) again; (E) the draught 25～35mm of each passage; (F) mill product specification, THE ADIABATIC SHEAR IN (along with the decline of rolling temperature, the yield strength of steel billet rises very fast, may injure shearing device).
Compared with prior art, the present invention has following advantage:
1, technology is easy, and is workable, and organization of production is convenient;
2, the production cycle shortens greatly, satisfies the large-scale production needs;
3, metal billet yield height; Hot-work cogging process cost reduces greatly;
4, rolled alloy base stable performance, size fluctuation is little, and surface quality is good.
The explanation of accompanying drawing table
Fig. 1 is the rolling soaking pit heating GH1015 ESR ingot technology of blooming mill first fire.
Specific embodiments
Certain Iron And Steel Company implements patent of the present invention, adopt the rolling hot-work cogging technics of soaking pit heating ESR ingot+blooming mill two fire, superalloy GH1015 ESR ingot (1.5～2.5 tons of the individual cigarette weights) rolling-cogging of φ 300～Φ 500mm is become 120～180mm alloy preform, and existing is example with " Φ 430mm ESR ingot (2 tons of individual cigarette weights) → 140mm alloy preform ".Blooming mill first is fiery when rolling, and soaking pit heating alloy pig requires: (A) charging temperature of alloy pig is 670 ℃, is incubated 1 hour; (B) speed with 55～60 ℃/h is warming up to 880～910 ℃, is incubated 1 hour; (C) be warming up to 1180 ℃ with the speed of 75～80 ℃/h again; (D) insulation is after 2 hours, alloy pig pursue stand up, and the alloy pig that stands up continues to be incubated 1 hour 15 minutes kinds; (E) alloy pig male and female face temperature head≤20 ℃, alloy pig goes out soaking pit hot-work cogging, and it is rolling to enter blooming mill first fire; Blooming mill hot-work cogging requires: before (A) rolling, close the water coolant of roll earlier, the water coolant of bearing shell suitably turns down, and avoids the water coolant of bearing shell to be splashed to the body of roll; (B) the roll preheating temperature is 100 ℃, allows rolling GH1015; (C) start rolling temperature of alloy pig 〉=1100 ℃, finishing temperature 〉=1000 ℃; The biting speed of blooming roll≤20 rev/min; (D) (draught is too big, and chink easily takes place the steel ingot rolled piece for draught 20～30mm; Draught is too little, influences the productivity of blooming mill); Draught deviation≤the 3mm of the draught of each passage and reduction schedule regulation; (E) rolling road number of times 11 passages of first fire; (F) rolled piece melts down and continues heating.Cogged ingot second is fiery when rolling, and the strip plate requirement is melted down in the soaking pit heating: (A) the first fiery rolled piece melts down heating, and 1170 ℃ of Heating temperatures be incubateds 35～50 fens and stand up by propping up after the kind, stands up rolled piece and is incubated 30～45 fens again and comes out of the stove after the kind; (B) when insulation pursue steel ingot and stands up, and reduces the temperature head of steel ingot male and female face, guarantees male and female face temperature head≤20 ℃ of rolled piece, and (C) rolled piece is come out of the stove, and it is fiery rolling to enter blooming mill second; Blooming mill hot-work cogging is closed the roll water coolant earlier before requiring (A) second fire rolling, and the water coolant of bearing shell still suitably turns down, and avoids the water coolant of bearing shell to be splashed to the body of roll; (B) the roll preheating temperature is 100 ℃; (C) start rolling temperature 〉=1100 ℃, finishing temperature 〉=1000 ℃; (D) biting speed of roll≤20 rev/min, biting speed≤10 of finished product K1, K2, K3 passage rev/min, and after rolled piece was nipped, rolled piece mill length 200-500mm promptly stopped to withdraw from, and it is rolling to continue normally to nip again, and avoids the rolled piece end to tear curling round the roll and occurs; (E) the draught 25～35mm of each passage; (F) mill product specification, THE ADIABATIC SHEAR IN.
Implement patent of the present invention superalloy GH1015 ESR ingot is carried out the hot-work rolling-cogging, it is easy to have technology, organization of production is convenient, the characteristics that metallurgical manufacturing cost reduces significantly, compare with traditional " superalloy ESR ingot-forging and pressing cogging " production technique, the production cycle shortens greatly, and metal billet yield (reaching 84.5%) improves more than 2 percentage points, hot-work cogging process cost reduces by 2500 yuan/ton, alloy preform ultrasonic flaw detection qualification rate 100%; By the Φ 70mm finished product material that 140 side mm GH1015 alloy preforms (blooming mill hot-work cogging production) are made, quality satisfies the regulation of Q/HYAD601-91Y standard, remarkable in economical benefits.
Claims (1)
1, the rolling-cogging production method of superalloy GH1015 is characterized in that adopting the rolling hot-work cogging of soaking pit heating ESR ingot+blooming mill two fire, produces the GH1015 steel billet:
The hot-work cogging first fiery rolling requirement:
When (1) soaking pit heated ESR ingot: (A) the ESR ingot individual cigarette weight was 1.5～2.0 tons, and 600～700 ℃ of the charging temperatures of alloy pig are incubated 0.8～1.3 hour; (B) speed with 40～60 ℃/h is warming up to 880～950 ℃, is incubated 0.8～1.3 hour; (C) be warming up to 1165～1190 ℃ with the speed of 60～80 ℃/h again; (D) 1165～1190 ℃ of insulations are 3.0～3.5 hours, between soak alloy pig pursue to prop up and stand up; (E) alloy pig male and female face temperature head≤20 ℃, alloy pig goes out soaking pit hot-work cogging, and it is rolling to enter blooming mill first fire;
(2) during blooming mill hot-work cogging: before (A) rolling, close the water coolant of roll earlier, the water coolant of bearing shell suitably turns down, and avoids the water coolant of bearing shell to be splashed to the body of roll; (B) the roll preheating temperature is 80～150 ℃; (C) start rolling temperature of alloy pig 〉=1100 ℃, finishing temperature 〉=1000 ℃; The biting speed of blooming roll≤20 rev/min; (D) draught 20～30mm; Draught deviation≤the 3mm of the draught of each passage and reduction schedule regulation; (E) rolling road number of times 10～15 passages of first fire; (F) rolled piece melts down and continues heating;
The hot-work cogging second fiery rolling requirement:
When (3) rolled piece was melted down in the soaking pit heating: (A) the first fiery rolled piece melted down heating, and 1160～1190 ℃ of Heating temperatures are incubated 65～90 fens kinds; (B) when insulation pursue steel ingot and stands up, and reduces the temperature head of steel ingot male and female face, guarantees male and female face temperature head≤20 ℃ of rolled piece, and (C) rolled piece is come out of the stove, and it is fiery rolling to enter blooming mill second;
(4) during blooming mill hot-work cogging: (A) second fire rolling before, close the roll water coolant earlier, the water coolant of bearing shell still suitably turns down, and avoids the water coolant of bearing shell to be splashed to the body of roll; (B) the roll preheating temperature is 80～150 ℃; (C) start rolling temperature 〉=1100 ℃, finishing temperature 〉=1000 ℃; (D) biting speed of roll≤20 rev/min, biting speed≤10 of finished product K1, K2, K3 passage rev/min, and, after rolled piece is nipped, when reaching 200～500mm, the rolled piece mill length stops withdrawing from, and it is rolling to continue normally to nip again; (E) the draught 25～35mm of each passage; (F) mill product specification, THE ADIABATIC SHEAR IN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025103 CN1277937C (en) | 2004-06-11 | 2004-06-11 | Rolling and cogging method for high-temperature alloy GH1015 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025103 CN1277937C (en) | 2004-06-11 | 2004-06-11 | Rolling and cogging method for high-temperature alloy GH1015 |
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| Publication Number | Publication Date |
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| CN1584066A CN1584066A (en) | 2005-02-23 |
| CN1277937C true CN1277937C (en) | 2006-10-04 |
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| CN 200410025103 Expired - Fee Related CN1277937C (en) | 2004-06-11 | 2004-06-11 | Rolling and cogging method for high-temperature alloy GH1015 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581000B (en) * | 2011-01-10 | 2014-04-30 | 宝钢特钢有限公司 | Production method for rolling and cogging big cast ingot of high-carbon high-alloy cold-working die steel |
| CN102836870B (en) * | 2011-06-23 | 2015-04-01 | 宝钢特钢有限公司 | Rolling and cogging production method for large austenite stainless and heat-resistant gas valve steel 21-4N ingot |
| CN103418614B (en) * | 2012-05-22 | 2015-09-30 | 核工业西南物理研究院 | A kind of milling method controlling thermonuclear fusion heap stainless steel materials grain size |
| CN103121034B (en) * | 2013-03-01 | 2015-02-25 | 浙江青山钢铁有限公司 | Super duplex stainless steel ingot hot working cogging method |
| CN104388860B (en) * | 2014-11-10 | 2016-06-22 | 太原钢铁(集团)有限公司 | A kind of nickel base superalloy finish forge cogging method |
| CN109207709B (en) * | 2018-09-26 | 2020-03-10 | 山西太钢不锈钢股份有限公司 | Heating method for rolling pure iron flat steel by blooming mill |
| CN113414246B (en) * | 2021-04-12 | 2022-03-29 | 中航上大高温合金材料股份有限公司 | Preparation method of regenerated GH4169 alloy cold-drawn bar |
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