CN105499294A - Extrusion production process for nickel base alloy pipe - Google Patents

Extrusion production process for nickel base alloy pipe Download PDF

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Publication number
CN105499294A
CN105499294A CN201610017231.2A CN201610017231A CN105499294A CN 105499294 A CN105499294 A CN 105499294A CN 201610017231 A CN201610017231 A CN 201610017231A CN 105499294 A CN105499294 A CN 105499294A
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Prior art keywords
lubricant
extrusion
ingot casting
liner
pecker
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CN201610017231.2A
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Chinese (zh)
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CN105499294B (en
Inventor
周向东
浦益龙
王颜臣
江生
吕斌
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Jiangsu Longda Super Alloy Co.,Ltd.
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Jiangsu Longda Superalloy Aviation Materials Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/085—Making tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding
    • B21C25/02—Dies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)

Abstract

The invention relates to an extrusion production process for a nickel base alloy pipe. Firstly, a lubricant is prepared, 25%-35% of MoS2 is adopted as a matrix of the lubricant, the rest is a lubricating original agent, and the lubricant is prepared after uniform mixing; the lubricant original agent is prepared from, by weight, 60%-65% of SiO2, 5%-6% of Na2O, 18%-20% of B2O3, 8%-12% of Al2O3, 3%-4% of MgO and 0.5%-1% of K2O; then a cast ingot is heated and a double-cone-shaped die is preheated, the interior of a lining and the interior of the double-cone-shaped die are coated with the lubricant, and finally extrusion is conducted through a horizontal oil press at the extrusion ratio of 4 to 10 and the extrusion speed of 30 mm.s<-1> to 60 mm.s<-1>. The method is simple in step and easy to operate, and the nickel base alloy pipe prepared through extrusion is high in strength and long in service life by means of preparation of the lubricant and adjustment of hot extrusion process parameters.

Description

The extruding production technology of nickel-based alloy pipe
Technical field
The present invention relates to a kind of extrusion process of nickel-based alloy pipe, belong to compo pipe preparing technical field.
Background technology
Incone1625(is called for short 625) compo pipe has the multiple excellent performances such as high temperature, high strength, corrosion resistance are good, is widely used in the field such as chemical equipment, nuclear industry.625 compo pipes due to hot processing temperature narrow range, thermoplasticity poor, during employing oblique milling hot piercing there is cracking in batch in pipe, reprocess after current 625 tubing all adopt extruded pipe abroad, the domestic technical matters such as lubrication, tool and mould, extrusion speed because of extruding is not improved and is difficult to realize, and adopt ingot casting centre-drilling hole, repeatedly cold rolling+heat treated mode, major defect is that production process is complicated, cycle is long, the various poor performance of goods can only be used on low-end product, and simultaneously service life is obviously short than external.
Summary of the invention
The object of the invention is mainly to adopt ingot casting centre-drilling hole to solve nickel-based alloy pipe in prior art, repeatedly cold rolling+heat treated mode is produced, and operation is complicated, and the cycle is longer, the problem of poor-performing, provides the extruding production technology that a kind of preparation method is simply easy to operate nickel-based alloy pipe.
The present invention adopts following technical scheme: a kind of extruding production technology of nickel-based alloy pipe, comprises the steps:
(1) preparation of lubricant: with the MoS of 25 ~ 35% 2for matrix, all the other make lubricant for former dose of lubrication mixes, and in former dose of described lubrication, each components based on weight percentage is SiO 260 ~ 65%, Na 2o5 ~ 6%, B 2o 318 ~ 20%, Al 2o 38 ~ 12%, MgO3 ~ 4%, K 2o0.5 ~ 1%;
(2) ingot casting heating: use resistance furnace to heat ingot casting, heating-up temperature is 1080 ~ 1150 DEG C, is incubated and needs the time of 60min to carry out by every 100mm thickness;
(3) biconial extrusion die is selected, horizontal (double action) oil hydraulic is adopted to extrude, in horizontal (double action) oil hydraulic, liner is set, in liner, pecker is set, pecker inside is provided with the endoporus run through, can lead to recirculated water in described endoporus carries out interior cold, and biconial extrusion die and liner are preheated to 450 ~ 500 DEG C;
(4) apply lubricant in the painting on ingot machine that supplies of liner and picking-up ingot casting, the thickness of lubricant applying is 1.5 ~ 2mm;
(5) ingot casting is put into horizontal (double action) oil hydraulic to extrude, be provided with dummy block between the extrusion axis of ingot casting and horizontal (double action) oil hydraulic, the extrusion ratio of biconial extrusion die is 4 ~ 10, and crushing failure at high speed speed is 30 ~ 60mms -1, during extruding pecker endoporus in without following bad water, carrying out interior cold 25 ~ 30s when opening the recirculated water in endoporus after having extruded immediately, preparing the extruded tube with complete dynamic recrystallized structure.
Further, to contact on end face with ingot casting at dummy block in described step (5) and be provided with a layer graphene pad, the thickness of described Graphene pad is 2.5 ~ 3mm, and the preheat temperature of described graphite pads is 450 ~ 600 DEG C.
Further, the diameter of described liner is 150 ~ 230mm.
Further, the diameter of described pecker is 49 ~ 59mm, and the diameter of bore of described pecker is 8 ~ 10mm.
Further, the sizing diameter of described biconial extrusion die is 83 ~ 91mm.
The inventive method step is simple, is easy to operation, and by the preparation of lubricant and the adjustment of Hot Extrusion Parameters, extrude the nickel-based alloy pipe prepared and have good intensity, service life is longer, is especially applicable to producing Incone1625 compo pipe.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment one:
A kind of preparation technology of Incone1625 compo pipe: ingot casting is chosen as external diameter * internal diameter * length=Φ 180* Φ 50*300, extrude tubes external diameter * wall thickness is Φ 82*15, adopt biconial extrusion die, the extrusion ratio of biconial extrusion die is 7.4, and extruder adopts horizontal (double action) oil hydraulic, is provided with liner in horizontal (double action) oil hydraulic, the diameter of liner is Φ 185mm, pecker diameter is Φ 49mm, and biconial extrusion die sizing diameter is 83mm, and fineness should reach ▽ 8(Ra0.8); Liner needs to carry out honing after finish turning, and fineness should reach ▽ 8(Ra0.8).
Lubricant is with MoS 2for substrate, MoS 2content be 32%, all the other for lubrication former dose, uniform stirring mix.In lubricating former dose, the proportioning percentage of each component is: SiO 262%, Na 2o5.3%, B 2o 318.1%Al 2o 310.2%MgO3.7%, K 2o0.7%.
Incone1625 alloy cast ingot is heated to 1080 DEG C, insulation 40min, be preheating to 500 DEG C to the liner in biconial extrusion die and horizontal (double action) oil hydraulic, pecker endoporus is Φ 10mm simultaneously, can lead to recirculated water and carry out interior cold in endoporus; Before extruding ingot casting extruding, the painting in ingot machine surrounding that supplies of liner and picking-up ingot casting is applied lubricant by 5min, and the applied thickness of lubricant is 2mm; In heating furnace, ingot casting out arrives extruding and all should coat the lubricant of thickness 2mm for every place contacted with ingot casting between ingot machine.
Incone1625 alloy cast ingot enters liner and starts extruding, and extrusion speed is 50mms -1; Dummy block is provided with between the extrusion axis of ingot casting and horizontal (double action) oil hydraulic, dummy block to contact with ingot casting end face is encased inside one piece of 3mm thick be preheating to 500 DEG C of graphite pads, during extruding pecker not boiling water follow bad, after full tonnage has extruded, horse back carries out interior water-cooled pecker 30s, can obtain the extruded tube with complete dynamic recrystallized structure after extruding.
Embodiment two:
A kind of preparation technology of Incone1625 compo pipe: ingot casting is chosen as external diameter * internal diameter * length=Φ 180* Φ 60*400, extrude tubes external diameter * wall thickness is Φ 90*14, adopt biconial extrusion die, the extrusion ratio of biconial extrusion die is 6.8, and extruder is horizontal (double action) oil hydraulic, is provided with liner in horizontal (double action) oil hydraulic, liner diameters is Φ 185mm, pecker diameter is Φ 59mm, and biconial extrusion die sizing diameter is 91mm, and fineness should reach ▽ 8(Ra0.8); Liner needs to carry out honing after finish turning, and fineness should reach ▽ 8(Ra0.8).
Lubricant adopts MoS 2for substrate, MoS2 is 32%, and all the other are former dose of lubrication, MoS 2with lubrication former dose of uniform stirring mixing.In lubricating former dose, the proportioning percentage of each component is: SiO 262%, Na 2o5.3%, B 2o 318.1%Al 2o 310.2%MgO3.7%, K 2o0.7%.
Incone1625 alloy cast ingot is heated to 1150 DEG C, insulation 40min, be preheating to 500 DEG C to biconial extrusion die and horizontal (double action) oil hydraulic, pecker endoporus is Φ 10mm simultaneously, can lead to recirculated water and carry out interior cold in endoporus; Before ingot casting extruding 5min by liner and hold up ingot casting confession ingot machine surrounding on coat lubricant, thickness is 2mm; In heating furnace, ingot casting out arrives extruding and all should coat the lubricant of thickness 2mm for every place contacted with ingot casting between ingot machine.
Incone1625 alloy cast ingot enters liner and starts extruding, and extrusion speed is 50mms -1dummy block is provided with between the extrusion axis of ingot casting and horizontal (double action) oil hydraulic, dummy block to contact with ingot casting end face is encased inside one piece of 3mm thick be preheating to 500 DEG C of graphite pads, during extruding pecker not boiling water follow bad, after full tonnage has extruded, horse back carries out interior water-cooled pecker 30s, can obtain the extruded tube with complete dynamic recrystallized structure after extruding.
Embodiment three:
A kind of preparation technology of Incone1625 compo pipe: ingot casting is chosen as external diameter * internal diameter * length=Φ 180* Φ 50*300, extrude tubes external diameter * wall thickness is Φ 82*15, adopt biconial extrusion die, the extrusion ratio of biconial extrusion die is 4, and extruder adopts horizontal (double action) oil hydraulic, is provided with liner in horizontal (double action) oil hydraulic, the diameter of liner is Φ 150mm, pecker diameter is Φ 49mm, and biconial extrusion die sizing diameter is 83mm, and fineness should reach ▽ 8(Ra0.8); Liner needs to carry out honing after finish turning, and fineness should reach ▽ 8(Ra0.8).
Lubricant is with MoS 2for substrate, MoS 2content be 32%, all the other for lubrication former dose, uniform stirring mix.In lubricating former dose, the proportioning percentage of each component is: SiO 260%, Na 2o6%, B 2o 320%Al 2o 39%MgO4%, K 2o1%.
Incone1625 alloy cast ingot is heated to 1080 DEG C, insulation 40min, be preheating to 450 DEG C to the liner in biconial extrusion die and horizontal (double action) oil hydraulic, pecker endoporus is Φ 8mm simultaneously, can lead to recirculated water and carry out interior cold in endoporus; Before extruding ingot casting extruding, the painting in ingot machine surrounding that supplies of liner and picking-up ingot casting is applied lubricant by 5min, and the applied thickness of lubricant is 1.5mm; In heating furnace, ingot casting out arrives extruding and all should coat the lubricant of thickness 2mm for every place contacted with ingot casting between ingot machine.
Incone1625 alloy cast ingot enters liner and starts extruding, and extrusion speed is 30mms -1; Dummy block is provided with between the extrusion axis of ingot casting and horizontal (double action) oil hydraulic, dummy block to contact with ingot casting end face is encased inside one piece of 3mm thick be preheating to 450 DEG C of graphite pads, during extruding pecker not boiling water follow bad, after full tonnage has extruded, horse back carries out interior water-cooled pecker 25s, can obtain the extruded tube with complete dynamic recrystallized structure after extruding.
Embodiment four:
A kind of preparation technology of Incone1625 compo pipe: ingot casting is chosen as external diameter * internal diameter * length=Φ 180* Φ 50*300, extrude tubes external diameter * wall thickness is Φ 82*15, adopt biconial extrusion die, the extrusion ratio of biconial extrusion die is 10, and extruder adopts horizontal (double action) oil hydraulic, is provided with liner in horizontal (double action) oil hydraulic, the diameter of liner is Φ 230mm, pecker diameter is Φ 59mm, and biconial extrusion die sizing diameter is 91mm, and fineness should reach ▽ 8(Ra0.8); Liner needs to carry out honing after finish turning, and fineness should reach ▽ 8(Ra0.8).
Lubricant is with MoS 2for substrate, MoS 2content be 32%, all the other for lubrication former dose, uniform stirring mix.In lubricating former dose, the proportioning percentage of each component is: SiO 265%, Na 2o5%, B 2o 318%Al 2o 38.5%MgO3%, K 2o0.5%.
Incone1625 alloy cast ingot is heated to 1150 DEG C, insulation 40min, be preheating to 500 DEG C to the liner in biconial extrusion die and horizontal (double action) oil hydraulic, pecker endoporus is Φ 10mm simultaneously, can lead to recirculated water and carry out interior cold in endoporus; Before extruding ingot casting extruding, the painting in ingot machine surrounding that supplies of liner and picking-up ingot casting is applied lubricant by 5min, and the applied thickness of lubricant is 2mm; In heating furnace, ingot casting out arrives extruding and all should coat the lubricant of thickness 1.5mm for every place contacted with ingot casting between ingot machine.
Incone1625 alloy cast ingot enters liner and starts extruding, and extrusion speed is 60mms -1; Dummy block is provided with between the extrusion axis of ingot casting and horizontal (double action) oil hydraulic, dummy block to contact with ingot casting end face is encased inside one piece of 3mm thick be preheating to 600 DEG C of graphite pads, during extruding pecker not boiling water follow bad, after full tonnage has extruded, horse back carries out interior water-cooled pecker 30s, can obtain the extruded tube with complete dynamic recrystallized structure after extruding.

Claims (5)

1. an extruding production technology for nickel-based alloy pipe, is characterized in that: comprise the steps:
(1) preparation of lubricant: with the MoS of 25 ~ 35% 2for matrix, all the other make lubricant for former dose of lubrication mixes, and in former dose of described lubrication, each components based on weight percentage is SiO 260 ~ 65%, Na 2o5 ~ 6%, B 2o 318 ~ 20%, Al 2o 38 ~ 12%, MgO3 ~ 4%, K 2o0.5 ~ 1%;
(2) ingot casting heating: use resistance furnace to heat ingot casting, heating-up temperature is 1080 ~ 1150 DEG C, is incubated and needs the time of 60min to carry out by every 100mm thickness;
(3) biconial extrusion die is selected, horizontal (double action) oil hydraulic is adopted to extrude, in horizontal (double action) oil hydraulic, liner is set, in liner, pecker is set, pecker inside is provided with the endoporus run through, can lead to recirculated water in described endoporus carries out interior cold, and biconial extrusion die and liner are preheated to 450 ~ 500 DEG C;
(4) apply lubricant in the painting on ingot machine that supplies of liner and picking-up ingot casting, the thickness of lubricant applying is 1.5 ~ 2mm;
(5) ingot casting is put into horizontal (double action) oil hydraulic to extrude, be provided with dummy block between the extrusion axis of ingot casting and horizontal (double action) oil hydraulic, the extrusion ratio of biconial extrusion die is 4 ~ 10, and crushing failure at high speed speed is 30 ~ 60mms -1, during extruding pecker endoporus in without following bad water, carrying out interior cold 25 ~ 30s when opening the recirculated water in endoporus after having extruded immediately, preparing the extruded tube with complete dynamic recrystallized structure.
2. the extruding production technology of nickel-based alloy pipe as claimed in claim 1, it is characterized in that: to contact on end face with ingot casting at dummy block in described step (5) and be provided with a layer graphene pad, the thickness of described Graphene pad is 2.5 ~ 3mm, and the preheat temperature of described graphite pads is 450 ~ 600 DEG C.
3. the extruding production technology of nickel-based alloy pipe as claimed in claim 1, is characterized in that: the diameter of described liner is 150 ~ 230mm.
4. the extruding production technology of nickel-based alloy pipe as claimed in claim 1, it is characterized in that: the diameter of described pecker is 49 ~ 59mm, the diameter of bore of described pecker is 8 ~ 10mm.
5. the extruding production technology of nickel-based alloy pipe as claimed in claim 1, is characterized in that: the sizing diameter of described biconial extrusion die is 83 ~ 91mm.
CN201610017231.2A 2016-01-12 2016-01-12 Extrusion production process for nickel base alloy pipe Active CN105499294B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107096800A (en) * 2017-06-08 2017-08-29 太原钢铁(集团)有限公司 Nickel-base alloy hot extrusion tubing organizational controls method
CN109759443A (en) * 2019-01-09 2019-05-17 成都先进金属材料产业技术研究院有限公司 The method that hot continuous rolling produces big specification pure titanium rod material
CN109940055A (en) * 2019-03-04 2019-06-28 北京天力创玻璃科技开发有限公司 The large-bore titanium alloy tubing Soft Roll carried out under protection, lubrication, heat-retaining condition covers vertical hot-extrusion method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4468945A (en) * 1981-07-24 1984-09-04 Bicc Public Limited Company Friction-actuated extrusion
CN101066548A (en) * 2005-04-27 2007-11-07 中国科学院金属研究所 High rate NiTi alloy pipe blank hot extruding mold
CN102277221A (en) * 2011-04-27 2011-12-14 北京天力创玻璃科技开发有限公司 Novel glass lubricant of stainless steel extruded tube
CN102463273A (en) * 2010-11-08 2012-05-23 北京有色金属研究总院 Preparation method of heavy-calibre nickel base alloy thin-walled tubular product
CN103602361A (en) * 2013-10-15 2014-02-26 北京天力创玻璃科技开发有限公司 Glass lubricant for hot extrusion of titanium alloy section bar
CN103639220A (en) * 2013-12-11 2014-03-19 西北有色金属研究院 Extrusion forming method of nickel alloy tube blank
CN104593702A (en) * 2015-02-12 2015-05-06 邯郸新兴特种管材有限公司 Difficult-to-deform superalloy extrusion method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4468945A (en) * 1981-07-24 1984-09-04 Bicc Public Limited Company Friction-actuated extrusion
CN101066548A (en) * 2005-04-27 2007-11-07 中国科学院金属研究所 High rate NiTi alloy pipe blank hot extruding mold
CN102463273A (en) * 2010-11-08 2012-05-23 北京有色金属研究总院 Preparation method of heavy-calibre nickel base alloy thin-walled tubular product
CN102277221A (en) * 2011-04-27 2011-12-14 北京天力创玻璃科技开发有限公司 Novel glass lubricant of stainless steel extruded tube
CN103602361A (en) * 2013-10-15 2014-02-26 北京天力创玻璃科技开发有限公司 Glass lubricant for hot extrusion of titanium alloy section bar
CN103639220A (en) * 2013-12-11 2014-03-19 西北有色金属研究院 Extrusion forming method of nickel alloy tube blank
CN104593702A (en) * 2015-02-12 2015-05-06 邯郸新兴特种管材有限公司 Difficult-to-deform superalloy extrusion method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107096800A (en) * 2017-06-08 2017-08-29 太原钢铁(集团)有限公司 Nickel-base alloy hot extrusion tubing organizational controls method
CN107096800B (en) * 2017-06-08 2019-01-11 太原钢铁(集团)有限公司 Nickel-base alloy hot extrusion tubing organizational controls method
CN109759443A (en) * 2019-01-09 2019-05-17 成都先进金属材料产业技术研究院有限公司 The method that hot continuous rolling produces big specification pure titanium rod material
CN109940055A (en) * 2019-03-04 2019-06-28 北京天力创玻璃科技开发有限公司 The large-bore titanium alloy tubing Soft Roll carried out under protection, lubrication, heat-retaining condition covers vertical hot-extrusion method

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