CN105880944A - Integrated manufacturing method of ultrahigh-strength alloy steel blind hole component - Google Patents
Integrated manufacturing method of ultrahigh-strength alloy steel blind hole component Download PDFInfo
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- CN105880944A CN105880944A CN201610313555.0A CN201610313555A CN105880944A CN 105880944 A CN105880944 A CN 105880944A CN 201610313555 A CN201610313555 A CN 201610313555A CN 105880944 A CN105880944 A CN 105880944A
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- blind hole
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- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000005242 forging Methods 0.000 claims abstract description 10
- 238000010891 electric arc Methods 0.000 claims abstract description 3
- 238000010791 quenching Methods 0.000 claims abstract description 3
- 230000000171 quenching effect Effects 0.000 claims abstract description 3
- 238000007670 refining Methods 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 8
- 239000000956 alloy Substances 0.000 abstract description 8
- 238000003723 Smelting Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract 2
- 238000005266 casting Methods 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 238000005496 tempering Methods 0.000 abstract 1
- 238000010313 vacuum arc remelting Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 229910001240 Maraging steel Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses an integrated manufacturing method of an ultrahigh-strength alloy steel blind hole component. The method includes the steps of steel ingot preparation, heading and drawing cogging, integrated hot forming, heat treatment and other process steps. According to steel ingot preparation, a steel ingot casting blank is prepared through a method of refining outside an electric arc furnace and a vacuum furnace and vacuum arc remelting; according to the heading and drawing cogging, a steel ingot is heated to the initial forging temperature ranging from 1100 DEG C to 1200 DEG C, upsetting and drawing out are performed, the final forging temperature ranges from 800 DEG C to 900 DEG C, and circulation is performed in this way 2-4 times; and according to the heat treatment, oil quenching is performed after heat preservation is performed for 0.5-1 min at the temperature ranging from 860 DEG C to 900 DEG C, and then tempering is performed for 2-3 h at 260 DEG C to 300 DEG C. By means of the integrated manufacturing method, the overall strength and toughness performance of the ultrahigh-strength alloy steel blind hole component can be improved, the breakage toughness of the ultrahigh-strength alloy steel blind hole component can be improved, the smelting cost of an ultrahigh-strength alloy is reduced, and material waste is reduced.
Description
Technical field
The present invention relates to the manufacture method of a kind of gold steel blind hole component.
Background technology
Ultra high strength alloy steel material is with combination properties such as the intensity of its superelevation, excellent fracture toughness, anti-shearing unstability abilities, and in the high-end equipment of weaponry and national economy, application demand is extensive.
Unimach mainly has low-alloy super-strength steel, middle alloy unimach, High-alloy Ultra-high Strength Steel, wherein the intensity of the low-alloy super-strength steel such as 30CrMnSiNi2A, 40CrNi2Si2MoVA, 300M, D6AC can reach more than 1600MPa, but its fracture toughness is poor；Maraging steel, the comprehensive mechanical property height of secondary hardened steel, as the intensity of the steel alloys such as 00Ni18Co8Mo5TiAl, Amert100 reaches more than 2000MPa, but it is containing certain precious metal Co, and material cost is expensive.In order to improve the obdurability of super high-strength alloy steel, use vacuum induction melting, vacuum consumable remelting processing method, reduce gas content, and the harmful element such as S, P and the relevant content that is mingled with, but smelt relatively costly.
The manufacture method of unimach blind hole component mainly uses Welding Structure and the direct machine of bar to add methods such as emptying, Welding Structure can apply to low-alloy super-strength steel component, and obdurability and fracture toughness are required the highest low cost component, but the manufacturing property requirement of high-strength and high ductility type component cannot be met；The direct machine of bar adds to be emptied the performance of structure and relies primarily on the performance of bar, bar structural homogenity is required the highest, need to forge bar core completely, otherwise blind hole member bottom section performance is defective will cause its entirety to be scrapped, and machining causes a large amount of superior alloy steel waste of material, and forging lumber recovery is extremely low.
Summary of the invention
It is an object of the invention to provide the integral manufacturing method of a kind of super high-strength alloy steel blind hole component, solve the problem that super high-strength alloy steel smelting cost is high.
To achieve these goals, by the following technical solutions:
The overall manufacturing process of a kind of super high-strength alloy steel blind hole component disclosed by the invention, it is possible to be effectively improved and improve the fracture toughness of super high-strength alloy, it is achieved the coupling of its obdurability, reduces smelting cost；Can effectively solve the problem that superelevation strong blind hole component Split connection structure damage parent performance, bar machining empty the manufacture deficiency that stock utilization is low, meet weaponry and needs that high-performance component is manufactured by the high-end equipment of national economy, reduce safety and accident potential that properties of product quality dissatisfaction exists, reduce the waste of expensive high duty alloy Steel material.
Figure of description
Fig. 1 is jumping-up schematic diagram；
Fig. 2 is that FMV pulls out schematic diagram；
Fig. 3 is super high-strength alloy steel blind hole component forming operation；
Fig. 4 is super high-strength alloy steel blind hole component drawn and iron Stretching die.
In figure, 1-upper bolster；2-drift；3-extends die；4-pressing plate；5-may move knockout plate；The left cushion block of 6-；The right cushion block of 7-；8-die shoe；9-blank.
Detailed description of the invention
Below in conjunction with example, the invention will be further described.
Embodiment 1
(1) electric arc furnace+vacuum external refining+vacuum consumable remelting method melting G50 steel alloy is used, when the liquid steel temperature of refine is reduced to 1580～1630 DEG C, using self-hardening sand to pour into the steel ingot strand of Φ 340 × 490mm, in steel ingot, the elemental gas content such as O, N is 15～20ppm.
(2) by Heating Steel Ingots to initial forging temperature 1150 DEG C, jumping-up and pulling (such as Fig. 1 and Fig. 2), final forging temperature 860 DEG C are carried out.Repeat jumping-up and pulling number of times is 3 times.The reduction in height 45% of the 1st jumping-up, the high footpath forging ratio of the 1st pulling is 2, it is thus achieved that billet size is Φ 304 × 608mm；The reduction in height 57% of the 2nd jumping-up, the high footpath forging ratio of the 2nd pulling is 1.8, it is thus achieved that billet size is Φ 315 × 567mm；The reduction in height 55% of the 3rd jumping-up, the high footpath forging ratio of the 3rd pulling is 1.6, it is thus achieved that billet size is Φ 330 × 517mm.
(3) carrying out blank heating to 1160 DEG C extruding prefabricated blank, backward extrusion, extrusion speed is at 80mm/s, backward extrusion deflection 20%；Then extrusion is then heated in heating furnace 900 DEG C～1000 DEG C carry out drawn and iron and extend, speed of extending at 150mm/s, the thinning rate of wall thickness 49%.Prefabricated blank, backward extrusion, drawn and iron technical process of extending is shown in Fig. 3.Drawn and iron extend technological requirement equipment have higher headroom away from and stroke, in order to solve the headroom of vertical extruder away from the problem with stroke limiting, devising the drawn and iron Stretching die structure of Fig. 4, die of extending has the effect extended, guide, rear part of extending, in the middle of the cushion block of left and right, is conveniently taken out.
(5) heat treatment described in, carries out oil quenching after 880 DEG C of temperature 1min, is then tempered 2h at 300 DEG C.More than mechanics properties testing, tensile strength 1700MPa, more than yield strength 1400MPa, elongation percentage more than 11%, fracture toughness 120MPa m1/2Above.
The overall manufacturing process of a kind of super high-strength alloy steel blind hole component that the present invention proposes, one is to improve fracture toughness in superstrength alloy smelting process, it is achieved obdurability mates, and reduces smelting cost simultaneously；Two is by upsetting pull cogging, the shaping of overall thermal drawn and iron, heat treatment, it is achieved the overall manufacture of deep blind hole component, it is ensured that the concordance of deep blind hole component obdurability, it is adaptable to low-alloy steel, medium alloy steel, high-alloy steel contour performance component manufacture.
The case study on implementation of the present invention is disclosed above, but and the non-limiting present invention.The invention of the art, may apply to the superelevation such as low-alloy steel, medium alloy steel, high-alloy steel deep blind hole component and the manufacture of high-performance deep-hole tube blank by force.These changes done according to present invention spirit are intended to be included in protection scope of the present invention.
Claims (1)
1. the integral manufacturing method of a super high-strength alloy steel blind hole component, it is characterised in that mainly comprise the steps: steel ingot prepare, upsetting pull cogging, overall thermal shape and heat treatment；
Prepared by steel ingot, use the method for electric arc furnace+vacuum external refining+vacuum consumable remelting to prepare steel ingot strand, and in steel ingot, O and N elemental gas content is less than 30ppm；
Upsetting pull cogging, by Heating Steel Ingots to initial forging temperature 1100～1200 DEG C, carries out jumping-up and pulling, final forging temperature 800～900 DEG C, so circulation 2～4 times；Original steel ingot strand ratio of height to diameter 1.3～2, jumping-up reduction in height is more than 40%, and the ratio of height to diameter of the ingot after jumping-up is less than 1；Using the pulling of FMV method, V-type anvil opening angle is 135 °, and anvil width ratio is more than 0.4, and each drafts is 15%～25%, the ratio of height to diameter of the ingot 1.5～2 after pulling；Blank height after a rear jumping-up is not more than the blank height after a front jumping-up, after once pulling after ratio of height to diameter of the ingot be not more than before once pulling after ratio of height to diameter of the ingot；
Overall thermal shape, blank heating to 1100～1200 DEG C is carried out extrude prefabricated blank, backward extrusion, extrusion speed 60～100mm/s, extrusion deformation degree 15～30%；Then extrusion being then heated in heating furnace 900 DEG C～1000 DEG C carry out drawn and iron and extend, extrusion wall thickness reduction, length increase, speed of extending 100～150mm/s, the thinning rate of wall thickness 30～50%；
Heat treatment, carries out oil quenching after 860～900 DEG C of temperature 0.5～1min, is then tempered 2～3h at 260～300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610313555.0A CN105880944B (en) | 2016-05-12 | 2016-05-12 | A kind of integral manufacturing method of super high-strength alloy steel blind hole component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610313555.0A CN105880944B (en) | 2016-05-12 | 2016-05-12 | A kind of integral manufacturing method of super high-strength alloy steel blind hole component |
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| Publication Number | Publication Date |
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| CN105880944A true CN105880944A (en) | 2016-08-24 |
| CN105880944B CN105880944B (en) | 2018-02-06 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107671219A (en) * | 2017-11-15 | 2018-02-09 | 烟台市台海集团有限公司 | A kind of extrusion forging method of the long pipe of major diameter |
| CN110756710A (en) * | 2019-11-05 | 2020-02-07 | 中国兵器工业第五九研究所 | Preparation method of deep blind hole component |
| CN110773687A (en) * | 2019-10-24 | 2020-02-11 | 江阴市恒润重工股份有限公司 | Forming method of low-temperature-resistant forging for petrochemical industry |
| CN111346997A (en) * | 2020-03-25 | 2020-06-30 | 攀钢集团江油长城特殊钢有限公司 | Processing technology of shell for missile |
| CN112139417A (en) * | 2020-08-03 | 2020-12-29 | 武汉重工铸锻有限责任公司 | Forging forming method of super-large deep blind hole shell |
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| CN102764954A (en) * | 2012-06-26 | 2012-11-07 | 江苏金源锻造股份有限公司 | Forging process for wind generator spindle |
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| US20090013531A1 (en) * | 2005-08-29 | 2009-01-15 | Thyssenkrupp Metalurgica Campo Limpo Ltda. | Method, production line, and piston blank used for the production of a monolithic piston for combustion engines, and piston for combustion engines |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107671219A (en) * | 2017-11-15 | 2018-02-09 | 烟台市台海集团有限公司 | A kind of extrusion forging method of the long pipe of major diameter |
| CN107671219B (en) * | 2017-11-15 | 2019-02-01 | 烟台市台海集团有限公司 | A kind of extrusion forging method of the long pipe of major diameter |
| CN110773687A (en) * | 2019-10-24 | 2020-02-11 | 江阴市恒润重工股份有限公司 | Forming method of low-temperature-resistant forging for petrochemical industry |
| CN110756710A (en) * | 2019-11-05 | 2020-02-07 | 中国兵器工业第五九研究所 | Preparation method of deep blind hole component |
| CN111346997A (en) * | 2020-03-25 | 2020-06-30 | 攀钢集团江油长城特殊钢有限公司 | Processing technology of shell for missile |
| CN112139417A (en) * | 2020-08-03 | 2020-12-29 | 武汉重工铸锻有限责任公司 | Forging forming method of super-large deep blind hole shell |
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| Publication number | Publication date |
|---|---|
| CN105880944B (en) | 2018-02-06 |
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Effective date of registration: 20240403 Address after: 400039 Chongqing Jiulongpo Yuzhou Road No. 33 Patentee after: Southwest Institute of technology and engineering of China Ordnance Equipment Group Country or region after: China Address before: 400039 Chongqing Jiulongpo Shiqiaopu Yuzhou Road No. 33 Patentee before: NO 59 Research Institute OF CHINA ORDNACE INDUSTRY Country or region before: China |