CN104480415A - Processing process of difficult-to-deform high temperature alloy GH141 cold-drawn material - Google Patents
Processing process of difficult-to-deform high temperature alloy GH141 cold-drawn material Download PDFInfo
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Abstract
The invention discloses a processing process of a difficult-to-deform high temperature alloy GH141 cold-drawn material. On one hand, the structure of a cold-drawing blank and the ratio of cold drawing decrease section are controlled and the internal stress of a rod obtained after cold drawing is reduced by use of a special process; on the other hand, excellent usability is obtained by use of a reasonable thermal treatment process. The adopted technical scheme is as follows: 1, the internal structure of the cold-drawing blank is controlled; 2, softening annealing treatment is adopted; 3, a reasonable ratio of cold drawing decrease section is selected; 4, two different straightening processes are adopted after cold drawing; 5, a reasonable thermal treatment process is selected. The processing process of the difficult-to-deform high temperature alloy GH141 cold-drawn material has the advantages that the structure of the blank is controlled to be uniform, the grain is fine and the crack formation trend can be effectively reduced, the hardness of the cold-drawing blank is reduced by virtue of softening annealing, the internal stress of the rod obtained after cold drawing is reduced effectively by virtue of straightening, and due to the adopted reasonable heat treatment process, at a room temperature, the plastic percentage elongation after fracture of the cold-drawn rod is 25% and the percentage reduction of area is 22%, at 760 DEG C, the high temperature tensile plastic percentage elongation after fracture of the cold-drawn rod is 34% and the percentage reduction of area is 36%; in short, the difficult-to-deform high temperature alloy GH141 cold-drawn material is excellent in properties.
Description
Technical field
The invention belongs to metallic substance cold-drawn manufacture field, disclose a kind of male sportsman cold-drawn material complete processing, be mainly used in the production of fastening piece GH141 alloy cold-drawn material.
Background technology
Male sportsman cold-drawn material, because of its have high temperature resistant, intensity is high, the excellent use properties such as corrosion-resistant, anti-oxidant, is used for greatly aerospace engine key part.Due to such alloy high strength, in cold working, internal stress sharply increases, and very easily occurs crack defect, and especially performance test index request is high, organizational requirements strict, and lumber recovery is on the low side.
GH141 alloy is in reference U.S. Rene ' 41 alloying constituent and Process ba-sis, through optimizing and revising alloying constituent, adding the trace element strengthening crystal boundaries etc. such as B, Zr, a kind of precipitation hardenable nickel base superalloy developed, alloy has higher tensile strength and creep rupture strength below 870 DEG C, is suitable for making less than 850 DEG C and requires that high strength and less than 980 DEG C require oxidation resistant Aeronautics and Astronautics engine hot parts.
GH141 alloy is the typical species of male sportsman, owing to containing a large amount of solution strengthening element C in alloy, Mo, Cr, Co etc., and containing more Al, Ti ageing strengthening element, Al in alloy, Ti constituent content and reach more than 4.7%, its γ ' phase Ni3 (Al, Ti) content reaches about 24%, make the working plasticity of alloy poor, deformation temperature range is narrow, belong to very less-deformable alloy, especially cold deformation processing, because bar after draw produces larger internal stress, storage period, the long bar self that easily causes produced stress crack, simultaneously in annealing and heat treatment process, when reaching 750 DEG C ~ 910 DEG C, strengthening phase γ ' separates out mutually in a large number, produce larger structural stress, two kinds of stress is superimposed very easily causes the horizontal and vertical crackle of Surface of Rod Bar, cold-drawn bar is caused to sentence in a large number useless.Produce as avoiding bar to produce stress crack, need to carry out softening annealing process fast after bar draw, have a strong impact on production efficiency, and in softening annealing process, still there is surface crack phenomenon, therefore cold-drawn material lumber recovery is extremely low, only about 20% ~ 30%, simultaneously because of needs repeatedly softening annealing, energy consumption is high, and production efficiency is low.And to room temperature tensile and 760 DEG C of high temperature tensile ductilities in cold-drawn bar standard, require to be all elongation after fracture >=8%, relative reduction in area >=10%, be difficult to meet.Male sportsman, usually used as military project important materials, abroad holds in close confidence its production technology, cannot find related data.
Summary of the invention
[0003] the present invention discloses a kind of male sportsman GH141 cold-drawn material complete processing, tissue and cold-drawn on the one hand by controlling cold-drawn blank subtract face amount, special straightening process is taked to reduce the stress of bar inside after cold-drawn, avoid it superimposed with the structural stress in annealing and heat treatment process, cause bar crack defect; On the other hand by adopting rational thermal treatment process, obtain good use properties.
For achieving the above object, the present invention is by the following technical solutions:
1, operational path is: vacuum induction smelting → vacuum consumable remelting → consumable ingot surface car light → rolling-cogging → softening annealing process → pieces of bar stock surface grinding → grassization, saponification → cold-drawn → aligning → bar thermal treatment; Wherein complete processing comprises rolling-cogging technique, softening annealing process, cold-drawing technology, straightening process and bar thermal treatment process.
2, concrete technology measure
(1) hot rolling cogging technique: hot rolling cogging temperature is 1140 DEG C ~ 1160 DEG C, last fiery rolling
Deflection >=35%, stops rolling temperature >=990 DEG C, and after making rolling-cogging, the grain size number of bar reaches and is not less than 6 grades;
(2) softening annealing process: annealing temperature is 1070 DEG C ~ 1090 DEG C, air-cooled quick cooling, and really
Protect pieces of bar stock annealing evenly;
(3) cold-drawing technology: after the pieces of bar stock surface treatment (polishing) after annealing, through grass, soap
Change, carry out cold-drawn draw, cold-drawn subtracts face amount and controls 9% ~ 11%;
(4) straightening process: after cold-drawn, bar immediately through two kinds of straightening processing, need be respectively multiple roll aligning
Align with hyperbolic tumbling, and the number of times often propping up bar hyperbolic tumbling aligning should be no less than 3 times, except ensureing that bar stock bent is outside one's consideration, most important effect is bar internal stress after elimination cold-drawn, avoids bar to occur crackle in follow-up placement and annealing and heat treatment process;
(5) finished product thermal treatment process: after cold-drawn, bar is through 1070 DEG C ~ 1090 DEG C anneal 30min,
Solution treatment 1110 DEG C ~ 1130 DEG C, insulation 30min ~ 40min air cooling, ageing treatment 890 DEG C ~ 910 DEG C insulation 3.5h ~ 4.5h, air cooling.
Advantage of the present invention and innovative point are:
(1) prevent the technical measures that cold-drawn bar crackle produces:
1. controlling the structural state of cold-drawn blank, by controlling hot rolling temperature and deflection, making base
Material homogeneous microstructure, crystal grain is tiny, effectively can reduce crackle and produce tendency;
2. by softening annealing, the hardness of cold-drawn blank is reduced;
3. by the straightening process after draw, effectively can reduce the stress of bar inside after cold-drawn, avoid cracking in placement and follow-up heat treatment process.Straightening process is divided into two steps, first adopts multi-roll straightener to carry out straightening processing, adopts hyperbolic tumbling aligning afterwards, and the number of times often propping up bar hyperbolic tumbling aligning should be no less than 3 times.
(2) improve to room-temperature tensile plasticity and 760 DEG C of high temperature tensile ductilities in bar room-temperature tensile plasticity and high temperature tensile ductility cold-drawn bar standard, require to be all elongation after fracture >=8%, relative reduction in area >=10%, be difficult to meet.Measured 9% ~ 11% by the face that subtracts controlling cold-drawn processing, and adopt rational heat treating regime, after cold-drawn, bar is through 1070 DEG C ~ 1090 DEG C anneal 30min, solution treatment 1110 DEG C ~ 1130 DEG C insulation 30min ~ 40min air cooling, ageing treatment 890 DEG C ~ 910 DEG C insulation 3.5h ~ 4.5h, air cooling, the temperature-room type plasticity of cold-drawn bar can reach elongation after fracture 25%, relative reduction in area 22%, 760 DEG C of high temperature tensile ductilities can reach elongation after fracture 34%, relative reduction in area 36%.
Embodiment
Following two preferred embodiments are provided.
Embodiment 1
Heat (batch) number: 13242210220, electrode size φ 130mm, consumable ingot size φ 180mm, chemical composition is as following table 1.
Table 1 %
| Element | C | Cr | Mo | Co | Al | Ti | Zr | Si | Ni |
| Content | 0.080 | 18.58 | 9.92 | 11.02 | 1.58 | 3.19 | 0.03 | 0.10 | Bal |
(1) hot rolling cogging technique: hot rolling cogging temperature is 1150 DEG C, last fiery rolling reduction 40%,
Stop rolling temperature 990 DEG C, rolling specs is φ 12mm, and bar grain fineness number is 7 grades;
(2) softening annealing process: annealing temperature is 1080 DEG C, air-cooled quick cooling, and ensure bar base
Material annealing evenly;
(3) cold-drawing technology: be of a size of φ 11.86mm after the pieces of bar stock surface treatment (polishing) after annealing,
Through grassization, saponification, carry out cold-drawn draw, cold-drawn subtracts face amount control 10%, is of a size of φ 11.25mm after cold-drawn;
(4) straightening process: after cold-drawn, bar is through multiple roll aligning and hyperbolic tumbling aligning, often props up rod
The number of times of material hyperbolic tumbling aligning is 3 times;
(5) finished product thermal treatment process: after cold-drawn, bar is through 1080 DEG C of anneal 30min, solution treatment
1110 DEG C of insulation 30min air coolings, ageing treatment 900 DEG C insulation 3.5h, air cooling.
Cold-drawn performance test detected result is in table 2.
Table 2
(6) cold-drawn bar lumber recovery reaches 70%.
Embodiment 2
Heat (batch) number: 13242210188, electrode size φ 130mm, consumable ingot size φ 180mm, chemical composition is as following table 3.
Table 3 %
| Element | C | Cr | Mo | Co | Al | Ti | Zr | Si | Ni |
| Content | 0.084 | 18.91 | 10.06 | 10.96 | 1.60 | 3.21 | 0.03 | 0.07 | Bal |
(1) hot rolling cogging technique: hot rolling cogging temperature is 1150 DEG C, last fiery rolling reduction 40%,
Stop rolling temperature 1000 DEG C, rolling specs is φ 16mm, and bar grain fineness number is 7 grades;
(2) softening annealing process: annealing temperature is 1080 DEG C, air-cooled quick cooling, and ensure bar base
Material annealing evenly;
(3) cold-drawing technology: be of a size of φ 15.45mm after the pieces of bar stock surface treatment (polishing) after annealing,
Through grassization, saponification, carry out cold-drawn draw, cold-drawn subtracts face amount control 10%, is of a size of φ 14.65mm after cold-drawn;
(4) straightening process: after cold-drawn, bar is through multiple roll aligning and hyperbolic tumbling aligning, often props up rod
The number of times of material hyperbolic tumbling aligning is 3 times;
(5) finished product thermal treatment process: after cold-drawn, bar is through 1080 DEG C of anneal 30min, solution treatment
1130 DEG C of insulation 30min air coolings, ageing treatment 900 DEG C insulation 4.5h, air cooling.
Cold-drawn performance test detected result is in table 4.
Table 4
(6) cold-drawn bar lumber recovery reaches 72%.
Claims (4)
1. a male sportsman GH141 cold-drawn material complete processing, is characterized in that: described machining process route is: rolling-cogging → softening annealing process → pieces of bar stock surface grinding → grassization, saponification → cold-drawn → aligning → bar thermal treatment; Namely cold-drawn material blank interior tissue is controlled; Softening annealing process; Rational cold-drawn is selected to subtract face amount; The straightening process that two kinds different is adopted after cold-drawn; Select rational thermal treatment process.
2. a kind of male sportsman GH141 cold-drawn material complete processing according to claim 1, is characterized in that: described hot rolling cogging technique: hot rolling cogging temperature is 1140 DEG C ~ 1160 DEG C, last fiery rolling reduction >=35%; Stop rolling temperature >=990 DEG C; Described softening annealing process: annealing temperature is 1070 DEG C ~ 1090 DEG C, air-cooled quick cooling;
Described cold-drawing technology: the pieces of bar stock surface grinding process after annealing, through grass, saponification, carries out cold-drawn draw, and cold-drawn subtracts face amount and controls 9% ~ 11%, is of a size of φ 11.25mm after cold-drawn; Described straightening process: after cold-drawn, bar immediately through two kinds of straightening processing, be respectively multiple roll aligning and hyperbolic tumbling aligning, and the number of times often propping up bar hyperbolic tumbling aligning need should be no less than 3 times, ensures bar stock bent degree; Described finished product thermal treatment process: after cold-drawn, bar is through 1070 DEG C ~ 1090 DEG C anneal 30min, solution treatment 1110 DEG C ~ 1130 DEG C, insulation 30min ~ 40min air cooling, ageing treatment 890 DEG C ~ 910 DEG C insulation 3.5h ~ 4.5h, air cooling.
3. a kind of male sportsman GH141 cold-drawn material complete processing according to claim 1, is characterized in that: the consumable ingot size φ 180mm of described cold-drawn material; Described hot rolling cogging technique: hot rolling cogging temperature is 1150 DEG C, last fiery rolling reduction 40%, rolling specs is φ 12mm; Stop rolling temperature 990 DEG C; Described softening annealing process: annealing temperature is 1080 DEG C, air-cooled quick cooling; Described cold-drawing technology: be of a size of φ 11.86mm after the pieces of bar stock surface grinding process after annealing,
Through grassization, saponification, carry out cold-drawn draw, cold-drawn subtracts face amount control 10%, is of a size of φ 11.25mm after cold-drawn;
Described straightening process: after cold-drawn, bar is through multiple roll aligning and hyperbolic tumbling aligning, and the number of times often propping up bar hyperbolic tumbling aligning is 3 times; Described finished product thermal treatment process: after cold-drawn, bar is through 1080 DEG C of anneal 30min, solution treatment 1110 DEG C insulation 30min air cooling, ageing treatment 900 DEG C insulation 3.5h, air cooling.
4. a kind of male sportsman GH141 cold-drawn material complete processing according to claim 3, is characterized in that: described hot rolling cogging technique: rolling specs is φ 16mm; Stop rolling temperature 1000 DEG C; Described cold-drawing technology: be of a size of φ 15.45mm after the pieces of bar stock surface grinding process after annealing, be of a size of φ 14.65mm after cold-drawn; Described finished product thermal treatment process: after cold-drawn, bar is through 1080 DEG C of anneal 30min, solution treatment 1130 DEG C insulation 40min air cooling, ageing treatment 900 DEG C insulation 4.5h, air cooling.
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Cited By (11)
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| CN106269937A (en) * | 2016-08-31 | 2017-01-04 | 福机机械工业(宁波)有限公司 | A kind of blank cold-drawing process of automobile engine oil circuit system mounting bracket |
| CN106884077A (en) * | 2017-01-18 | 2017-06-23 | 抚顺特殊钢股份有限公司 | A kind of cold drawn material two-part electricity quenching softening annealing process of high temperature alloy |
| CN108342556A (en) * | 2018-02-14 | 2018-07-31 | 福建东亚机械有限公司 | A kind of piston ring high alloy wire rod contour machining procedure |
| CN109248937A (en) * | 2018-09-19 | 2019-01-22 | 钢铁研究总院 | A kind of cold-drawing method of the iron-based high-strength high-temperature alloy bar material of nickel chromium triangle |
| CN110125194A (en) * | 2019-04-25 | 2019-08-16 | 江油华冶特材有限公司 | A kind of high-intensitive circle draws the manufacturing process of hexagonal steel |
| CN110153652A (en) * | 2019-05-15 | 2019-08-23 | 埃斯科特钢有限公司 | A kind of railway spring is ground the production technology of bright as silver material |
| CN111041393A (en) * | 2019-12-24 | 2020-04-21 | 陕西宏远航空锻造有限责任公司 | Method for refining grains of high-temperature solid solution nickel-based superalloy |
| CN111304567A (en) * | 2020-03-16 | 2020-06-19 | 江苏集萃先进金属材料研究所有限公司 | Method for producing GH4169 fine-grained bar through thermomechanical treatment |
| CN112474867A (en) * | 2020-11-02 | 2021-03-12 | 抚顺特殊钢股份有限公司 | Preparation method of high-temperature alloy hexagonal bar |
| CN113414246A (en) * | 2021-04-12 | 2021-09-21 | 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 |
| CN116891955A (en) * | 2023-09-11 | 2023-10-17 | 成都先进金属材料产业技术研究院股份有限公司 | Cold working and heat treatment method of Ni-Cr electrothermal alloy hot rolled wire rod |
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| CN106269937B (en) * | 2016-08-31 | 2019-02-22 | 福机机械工业(宁波)有限公司 | A kind of blank cold-drawing process of automobile engine oil circuit system mounting bracket |
| CN106269937A (en) * | 2016-08-31 | 2017-01-04 | 福机机械工业(宁波)有限公司 | A kind of blank cold-drawing process of automobile engine oil circuit system mounting bracket |
| CN106884077A (en) * | 2017-01-18 | 2017-06-23 | 抚顺特殊钢股份有限公司 | A kind of cold drawn material two-part electricity quenching softening annealing process of high temperature alloy |
| CN108342556B (en) * | 2018-02-14 | 2020-05-01 | 福建东亚机械有限公司 | High-alloy wire forming processing technology for piston ring |
| CN108342556A (en) * | 2018-02-14 | 2018-07-31 | 福建东亚机械有限公司 | A kind of piston ring high alloy wire rod contour machining procedure |
| CN109248937A (en) * | 2018-09-19 | 2019-01-22 | 钢铁研究总院 | A kind of cold-drawing method of the iron-based high-strength high-temperature alloy bar material of nickel chromium triangle |
| CN110125194A (en) * | 2019-04-25 | 2019-08-16 | 江油华冶特材有限公司 | A kind of high-intensitive circle draws the manufacturing process of hexagonal steel |
| CN110153652B (en) * | 2019-05-15 | 2021-05-11 | 埃斯科特钢有限公司 | Production process for grinding bright silver material of railway spring |
| CN110153652A (en) * | 2019-05-15 | 2019-08-23 | 埃斯科特钢有限公司 | A kind of railway spring is ground the production technology of bright as silver material |
| CN111041393B (en) * | 2019-12-24 | 2021-10-15 | 陕西宏远航空锻造有限责任公司 | Method for refining grains of high-temperature solid solution nickel-based superalloy |
| CN111041393A (en) * | 2019-12-24 | 2020-04-21 | 陕西宏远航空锻造有限责任公司 | Method for refining grains of high-temperature solid solution nickel-based superalloy |
| CN111304567A (en) * | 2020-03-16 | 2020-06-19 | 江苏集萃先进金属材料研究所有限公司 | Method for producing GH4169 fine-grained bar through thermomechanical treatment |
| CN112474867A (en) * | 2020-11-02 | 2021-03-12 | 抚顺特殊钢股份有限公司 | Preparation method of high-temperature alloy hexagonal bar |
| CN113414246A (en) * | 2021-04-12 | 2021-09-21 | 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 |
| 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 |
| CN116891955A (en) * | 2023-09-11 | 2023-10-17 | 成都先进金属材料产业技术研究院股份有限公司 | Cold working and heat treatment method of Ni-Cr electrothermal alloy hot rolled wire rod |
| CN116891955B (en) * | 2023-09-11 | 2023-12-01 | 成都先进金属材料产业技术研究院股份有限公司 | Cold working and heat treatment method of Ni-Cr electrothermal alloy hot rolled wire rod |
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