CN1824402A - Alloy pipe material thermal extrusion method and extrusion mould - Google Patents
Alloy pipe material thermal extrusion method and extrusion mould Download PDFInfo
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- CN1824402A CN1824402A CNA2006100461431A CN200610046143A CN1824402A CN 1824402 A CN1824402 A CN 1824402A CN A2006100461431 A CNA2006100461431 A CN A2006100461431A CN 200610046143 A CN200610046143 A CN 200610046143A CN 1824402 A CN1824402 A CN 1824402A
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Abstract
The present invention relates to a hot extrusion method of alloy pipe material and its extrusion die arrangement. It includes an extrusion chamber, said extrusion chamber is placed in the extrusion chamber seat and is fixed on the base plate by means of pressure plate, the concave die is placed in the lower end of extrusion chamber and is fixed in the recessed groove on the base plate, the base plate is fixed on the base seat of extruder by means of bolt, the extrusion ram is set in the glass pad, extrusion billet material, graphite pad and extrusion pad, and is fixed on the extrusion shaft, and said extrusion shaft is fixed under the extrusion head of extruder by means of fixing seat. Said extrusion process includes the following steps: (1) preheating die arrangement; (2) applying lubricating agent; (3) heating billet material; (4) extrusion forming; (5) annealing; and (6) cleaning extruded pipe billet.
Description
Technical field
The invention belongs to tubing hot extrusion technology, particularly a kind of alloy pipe material thermal extrusion method and extrusion die.
Background technology
High-temperature alloy material has anti-oxidant under the high temperature, anticorrosive and advantage such as compressive property is good, especially nickel based tubular product made from high temperature alloy, serviceability temperature is widely used in industry neck cities such as Aeronautics and Astronautics aircraft, generating, rocket engine, nuclear reactor, petrochemical industry up to more than 700 ℃.But, nickel based tubular product made from high temperature alloy is when shaping, also the technical problem underlying of Cun Zaiing has: (1) is because strength of materials height, material flowability is poor, so when adopting common taper matrix structure and the hot-pressed tubing of lubricating method, because the manufacturability of extruding is relatively poor, the pipe severe crack, it is difficult to be shaped, and produces the percent defective height; (2) the hot extrusion deformation temperature range of nickel base superalloy is narrow, goes back neither one rational and effective extrusion temperature scope at present, and also there are a lot of deficiencies in the hot extrusion forming process parameter; (3) if adopt the boring cold rolling process, then there are problems such as productivity ratio is low, waste of material is big.Therefore, in extrusion process, how to select a rational and effective hot extrusion forming process parameter and process, improve the plastic deformation performance, cost is low and to improve the quality of products be to be badly in need of the technical problem underlying that solves.
Summary of the invention
The objective of the invention is in order to solve the technical problem that existing alloy pipe exists in hot-pressed process, improve technological parameter and processes such as extrusion billet heating-up temperature, mold preheating temperature, extrusion speed, provide a kind of production efficiency height, cost is low and the alloy pipe material thermal extrusion method of good product quality and extrusion die.
Alloy pipe hot-extrusion mold of the present invention, comprise extrusion axis, recipient, dummy block, graphite pads, pressure ram, glass isolator, die, base plate, the extruding cylinder base, holder, recipient is arranged in the extruding cylinder base, and be fixed on the base plate by pressing plate, die is arranged on the lower end in the recipient, and be fixed in the groove on the base plate, base plate is by on the base that is bolted to extruder, be disposed with glass isolator above the die, extrusion billet, graphite pads, dummy block, pressure ram is arranged on glass isolator, extrusion billet, graphite pads, in the hole of dummy block, and be fixed on the extrusion axis, extrusion axis is fixed on by holder below the extrusion head of extruder, the working surface of described die is taper, sizing mouth place is that circular arc is excessive, circular arc R 3.5～R5, the working surface of described die and glass isolator is conical, and coning angle is 35 °≤θ 〉=45 °.
Alloy pipe material thermal extrusion method of the present invention, the extrusion process step is:
(1) preheated mold: mold preheating temperature is 350～580 ℃;
(2) apply lubricant: extrusion billet, recipient are heated to 100～150 ℃, at the surface-coated glass powdery lubricant of heating blank; Inner surface coated glass powdery lubricant at the heating recipient;
(3) heating extrusion billet: the extrusion billet of coated glass powdery lubricant is lain in the bell furnace, feed oxygen content＜0.2%, dew point is-60 ℃ N
2Protection gas, be warming up to 680～860 ℃ after the sealing after, be heated to 1050～1160 ℃ with programming rate＜30 ℃/h again;
(4) extrusion molding: earlier the heated glass pad is contained in die above, successively extrusion billet, graphite pads, dummy block are contained in the recipient again, begin extruding then, extrusion speed is 60～100mm/s, best extrusion speed is 75～92mm/s, extrusion ratio is 4.5～13.5, and the blank extrusion temperature is 1050～1160 ℃, and best blank extrusion temperature is 1080～1140 ℃;
(5) annealing: hot-pressed pipe is put into cold water be cooled to room temperature, eliminate inner surface crystal grain thin layer pockety;
(6) cleaning extrusion tube blank: pipe endoporus and outer surface after the extruding are cleaned out, helped the cold rolling time raising surface quality of subsequent handling.
The present invention has the production efficiency height, cost is low and advantage such as good product quality, and the Extruding die life-span improves more than 100%, and production efficiency improves more than 200%, and cost reduces more than 55%, can satisfy the needs of the hot-pressed mass production of nickel-base alloy tubing.
Description of drawings
Fig. 1 is the structural representation of alloy pipe hot-extrusion mold;
Among the figure: 1 extrusion axis, 2 recipients, 3 dummy blocks, 4 graphite pads, 5 pressure rams, 6 extrusion billets, 7 glass isolators, 8 dies, 9 base plates, 10 pressing plates, 11 extruding cylinder bases, 12 holders.
The specific embodiment
Further specify the structure and the pressing method of alloy pipe hot-extrusion mold of the present invention below in conjunction with example.
As shown in Figure 1, a kind of alloy pipe material thermal extrusion method and extrusion die comprise extrusion axis 1, recipient 2, dummy block 3, graphite pads 4, pressure ram 5, extrusion billet 6, glass isolator 7, die 8, base plate 9, pressing plate 10, extruding cylinder base 11, holder 12.Recipient 2 is arranged in the extruding cylinder base 11, and be screwed on base plate 9 by pressing plate 10, die 8 is arranged on the lower end in the recipient 2, and be fixed in the groove on the base plate 9, base plate 9 is by on the base that is bolted to extruder, on die 8, put heated glass pad 7 again, refill the extrusion billet 6 of heating, put graphite pads 4 and dummy block 3 then, pressure ram 5 is installed in glass isolator 7, extrusion billet 6, graphite pads 4, in the hole of dummy block 3, and be fixed on the extrusion axis 1, extrusion axis 1 is fixed on by holder 12 below the extrusion head of extruder.During extruding, the extrusion head of extruder moves downward, and by extrusion axis 1, dummy block 3, graphite pads 4 extrusion billet 6 in recipient 2, finishes extrusion process.
Because adopting the working surface of die is that taper, sizing mouth place are that circular arc is excessive, its circular arc R 3.5～R5, the working surface of die and glass isolator be taper shape, and coning angle is 35 °≤θ 〉=45 °.Therefore, on the extrusion billet surface, adhere to one deck glass film easily, thus high insulating effect, extrusion billet is rationally mobile, and extruding force is low, has significantly improved the tube surfaces quality, makes extrusion billet finish extrusion process smoothly.
A kind of nickel-base alloy tubing hot-extrusion method, with extrusion billet size: outer diameter D=85mm, inside diameter D=22mm, height L=200mm, its extrusion process step is:
(1) preheated mold: mold preheating temperature is 450 ℃
(2) apply lubricant: extrusion billet, recipient are heated to 150 ℃, at the surface-coated glass powdery lubricant of heating blank; Inner surface coated glass powdery lubricant at the heating recipient;
(3) heating extrusion billet: extrusion billet is lain in the bell furnace, feed oxygen content＜0.2%, dew point is-60 ℃ N
2Protection gas, be warming up to 750 ℃ after the sealing after, be heated to 1150 ℃ with programming rate＜30 ℃/h again;
(4) extrusion molding: earlier the heated glass pad is contained in die above, successively extrusion billet, graphite pads, dummy block are contained in the recipient again, begin extruding then, extrusion speed is 85mm/s, extrusion ratio is 9.5, the blank extrusion temperature is 1120 ℃;
(5) annealing: hot-pressed pipe is put into cold water be cooled to room temperature, eliminate inner surface crystal grain thin layer pockety;
(6) cleaning extrusion tube blank: pipe endoporus and outer surface after the extruding are cleaned out, helped the cold rolling time raising surface quality of subsequent handling.
The present invention is owing to adopt rational hot extrusion process method and improved die and glass isolator combination hot-extrusion mold passes structure, significantly improved tubing material flowability and forming effect when hot-pressed.
Claims (4)
1, a kind of alloy pipe material thermal extrusion method is characterized in that, tubing hot extrusion technique step is:
(1) preheated mold: 350～580 ℃ of mold preheating temperatures;
(2) apply lubricant: extrusion billet, recipient are heated to 100～150 ℃, at the surface-coated glass powdery lubricant of heating blank; Inner surface coated glass powdery lubricant at the heating recipient;
(3) heating extrusion billet: extrusion billet is lain in the bell furnace, feed oxygen content＜0.2%, dew point is-60 ℃ N
2Protection gas, be warming up to 680～820 ℃ after the sealing after, be heated to 1060～1150 ℃ with programming rate＜30 ℃/h again;
(4) extrusion molding: earlier the heated glass pad is contained in die above, successively extrusion billet, graphite pads, dummy block are contained in the recipient again, begin extruding then, extrusion speed is 60～100mm/s, extrusion ratio is 4.5～13.5;
(5) annealing: hot-pressed pipe is put into cold water be cooled to room temperature, eliminate inner surface crystal grain thin layer pockety;
(6) cleaning extrusion tube blank: pipe endoporus and outer surface after the extruding are cleaned out, helped follow-up cold roll forming.
2, a kind of alloy pipe material thermal extrusion method as claimed in claim 1 is characterized in that, the best blank temperature of described extrusion molding is 1080～1120 ℃.
3, a kind of alloy pipe material thermal extrusion method as claimed in claim 1 is characterized in that, the best extrusion speed of described extrusion molding is 75～92mm/s.
4, a kind of alloy pipe hot-extrusion mold, comprise extrusion axis, recipient, pressure ram, the extruding cylinder base, recipient is arranged in the extruding cylinder base, and be fixed on the base plate by pressing plate, die is arranged on the lower end in the recipient, and be fixed in the groove on the base plate, base plate is by on the base that is bolted to extruder, be disposed with glass isolator above the die, extrusion billet, graphite pads, dummy block, pressure ram is arranged on glass isolator, extrusion billet, graphite pads, in the hole of dummy block, and be fixed on the extrusion axis, extrusion axis is fixed on by holder below the extrusion head of extruder, it is characterized in that, the working surface of described die is taper, sizing mouth place is that circular arc is excessive, circular arc R 3.5～R5, the working surface of die and glass isolator are conical, and coning angle is 35 °≤θ 〉=45 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100461431A CN1824402A (en) | 2006-03-23 | 2006-03-23 | Alloy pipe material thermal extrusion method and extrusion mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100461431A CN1824402A (en) | 2006-03-23 | 2006-03-23 | Alloy pipe material thermal extrusion method and extrusion mould |
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| CN1824402A true CN1824402A (en) | 2006-08-30 |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912890A (en) * | 2010-08-20 | 2010-12-15 | 沈阳理工大学 | Method for establishing constitutive relation model of material during extrusion deformation of pipe |
| CN102166589A (en) * | 2010-12-31 | 2011-08-31 | 桐乡市民彦轻合金有限公司 | Method for producing ultrahigh-precision hard disk driving arm sections |
| CN102240688A (en) * | 2011-05-13 | 2011-11-16 | 北京机电研究所 | Method for forming rear axle whole by rapid extrusion |
| CN102463272A (en) * | 2010-11-08 | 2012-05-23 | 北京有色金属研究总院 | Short-flow preparation method of minor-caliber nickel-based alloy thin-wall tubes |
| CN102699093A (en) * | 2012-06-14 | 2012-10-03 | 亚太轻合金(南通)科技有限公司 | Die fixing mechanism |
| CN103817245A (en) * | 2014-02-25 | 2014-05-28 | 武汉理工大学 | Method for active lubricating forming in metal plastic working |
| CN103909110A (en) * | 2013-01-08 | 2014-07-09 | 苏州昆仑重型装备制造有限公司 | Blowout preventer oil cylinder making method and reverse extrusion die used thereby |
| CN104117547A (en) * | 2014-07-21 | 2014-10-29 | 王元琪 | Continuous extrusion die of warm extrusion gear stick and machining method thereof |
| CN104493167A (en) * | 2014-11-20 | 2015-04-08 | 中国航空工业集团公司北京航空材料研究院 | Method for forming powder high-temperature alloy annular member |
| CN104741612A (en) * | 2014-11-26 | 2015-07-01 | 内蒙古北方重工业集团有限公司 | Powder high temperature alloy bar extrusion method |
| CN104858254A (en) * | 2014-02-24 | 2015-08-26 | 苏州昆仑重型装备制造有限公司 | 35CrMo steel thick-walled tube vertical backward extrusion method, and extrusion die thereof |
| CN105344733A (en) * | 2015-10-19 | 2016-02-24 | 哈尔滨工业大学 | Nickel, manganese and gallium alloy rod hot-extrusion preparation method |
| CN106345832A (en) * | 2016-08-31 | 2017-01-25 | 常州中钢精密锻材有限公司 | Pure titanium pipe extrusion process using novel lubricating manner |
| CN109332410A (en) * | 2018-09-27 | 2019-02-15 | 中国航发北京航空材料研究院 | A kind of big L/D ratio hollow thin-wall axis squeezes preparation facilities and method |
| CN105015019B (en) * | 2014-04-28 | 2019-04-19 | 重庆市奇龙工贸有限公司 | Integrated die set device |
| CN109877180A (en) * | 2019-04-25 | 2019-06-14 | 西安建筑科技大学 | It is a kind of for measuring the thermal-squeezing device and method of extrusion cylinder inner wall friction factor |
| CN110116143A (en) * | 2019-04-29 | 2019-08-13 | 浙江久立特材科技股份有限公司 | A kind of small-bore thick-wall seamless of hot extrusion molding |
| CN110814249A (en) * | 2019-11-13 | 2020-02-21 | 中国航发动力股份有限公司 | Forming method of stainless steel long pipe forging |
| CN112246903A (en) * | 2020-09-25 | 2021-01-22 | 北京工业大学 | Device and method for preparing magnesium alloy thin tube with separated rod and needle |
| CN113182373A (en) * | 2021-05-18 | 2021-07-30 | 山西太钢不锈钢股份有限公司 | Extrusion method of nickel-based alloy seamless steel pipe |
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2006
- 2006-03-23 CN CNA2006100461431A patent/CN1824402A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912890A (en) * | 2010-08-20 | 2010-12-15 | 沈阳理工大学 | Method for establishing constitutive relation model of material during extrusion deformation of pipe |
| CN102463272A (en) * | 2010-11-08 | 2012-05-23 | 北京有色金属研究总院 | Short-flow preparation method of minor-caliber nickel-based alloy thin-wall tubes |
| CN102166589A (en) * | 2010-12-31 | 2011-08-31 | 桐乡市民彦轻合金有限公司 | Method for producing ultrahigh-precision hard disk driving arm sections |
| CN102166589B (en) * | 2010-12-31 | 2013-01-09 | 桐乡市民彦轻合金有限公司 | Method for producing ultrahigh-precision hard disk driving arm sections |
| CN102240688A (en) * | 2011-05-13 | 2011-11-16 | 北京机电研究所 | Method for forming rear axle whole by rapid extrusion |
| CN102699093A (en) * | 2012-06-14 | 2012-10-03 | 亚太轻合金(南通)科技有限公司 | Die fixing mechanism |
| CN103909110A (en) * | 2013-01-08 | 2014-07-09 | 苏州昆仑重型装备制造有限公司 | Blowout preventer oil cylinder making method and reverse extrusion die used thereby |
| CN104858254A (en) * | 2014-02-24 | 2015-08-26 | 苏州昆仑重型装备制造有限公司 | 35CrMo steel thick-walled tube vertical backward extrusion method, and extrusion die thereof |
| CN103817245A (en) * | 2014-02-25 | 2014-05-28 | 武汉理工大学 | Method for active lubricating forming in metal plastic working |
| CN103817245B (en) * | 2014-02-25 | 2016-03-30 | 武汉理工大学 | A kind of method that in Metal Forming, active lubrication is shaped |
| CN105015019B (en) * | 2014-04-28 | 2019-04-19 | 重庆市奇龙工贸有限公司 | Integrated die set device |
| CN104117547A (en) * | 2014-07-21 | 2014-10-29 | 王元琪 | Continuous extrusion die of warm extrusion gear stick and machining method thereof |
| CN104117547B (en) * | 2014-07-21 | 2016-04-27 | 王元琪 | A kind of Warm Extrusion gear stick continuous extrusion die and processing method thereof |
| CN104493167A (en) * | 2014-11-20 | 2015-04-08 | 中国航空工业集团公司北京航空材料研究院 | Method for forming powder high-temperature alloy annular member |
| CN104741612A (en) * | 2014-11-26 | 2015-07-01 | 内蒙古北方重工业集团有限公司 | Powder high temperature alloy bar extrusion method |
| CN105344733A (en) * | 2015-10-19 | 2016-02-24 | 哈尔滨工业大学 | Nickel, manganese and gallium alloy rod hot-extrusion preparation method |
| CN105344733B (en) * | 2015-10-19 | 2017-07-28 | 哈尔滨工业大学 | A kind of nickel manganese gallium alloy bar material hot extrusion preparation method |
| CN106345832A (en) * | 2016-08-31 | 2017-01-25 | 常州中钢精密锻材有限公司 | Pure titanium pipe extrusion process using novel lubricating manner |
| CN109332410A (en) * | 2018-09-27 | 2019-02-15 | 中国航发北京航空材料研究院 | A kind of big L/D ratio hollow thin-wall axis squeezes preparation facilities and method |
| CN109877180A (en) * | 2019-04-25 | 2019-06-14 | 西安建筑科技大学 | It is a kind of for measuring the thermal-squeezing device and method of extrusion cylinder inner wall friction factor |
| CN110116143A (en) * | 2019-04-29 | 2019-08-13 | 浙江久立特材科技股份有限公司 | A kind of small-bore thick-wall seamless of hot extrusion molding |
| CN110814249A (en) * | 2019-11-13 | 2020-02-21 | 中国航发动力股份有限公司 | Forming method of stainless steel long pipe forging |
| CN110814249B (en) * | 2019-11-13 | 2022-01-25 | 中国航发动力股份有限公司 | Forming method of stainless steel long pipe forging |
| CN112246903A (en) * | 2020-09-25 | 2021-01-22 | 北京工业大学 | Device and method for preparing magnesium alloy thin tube with separated rod and needle |
| CN113182373A (en) * | 2021-05-18 | 2021-07-30 | 山西太钢不锈钢股份有限公司 | Extrusion method of nickel-based alloy seamless steel pipe |
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