CN103045837A - Manufacturing method of duplex-phase stainless seamless tube - Google Patents
Manufacturing method of duplex-phase stainless seamless tube Download PDFInfo
- Publication number
- CN103045837A CN103045837A CN2013100103431A CN201310010343A CN103045837A CN 103045837 A CN103045837 A CN 103045837A CN 2013100103431 A CN2013100103431 A CN 2013100103431A CN 201310010343 A CN201310010343 A CN 201310010343A CN 103045837 A CN103045837 A CN 103045837A
- Authority
- CN
- China
- Prior art keywords
- cold
- drawn
- steel pipe
- passage
- thermal treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention relates to a manufacturing method of a duplex-phase stainless seamless tube, and the method comprises cold-drawing and heat treatment. The manufacturing method of the duplex-phase stainless seamless tube is characterized in that the diameter-to-wall ratio of the manufactured duplex-phase stainless seamless tube is 3-5, and reduction of a hot-extrusion cross section is not lower than 60%; the cold-drawing is performed for 3-5 passes, and the reduction of cross section of each pass is not greater than 20%; and the heat treatment annealing is performed once after each pass of cold-drawing. The performance of the seamless tube manufactured by the manufacturing method of the duplex-phase stainless seamless tube can meet standard requirements of GB/T21833-2008 and ASMESA789/790M.
Description
Technical field
The present invention relates to a kind of manufacture method of seamless two-phase stainless-steel pipe, specifically is the manufacture method of the seamless two-phase stainless-steel pipe of diameter-wall-rate 3～5.
Background technology
The ratio of outer diameter of steel pipes and wall thickness is called diameter-wall-rate, and usually diameter-wall-rate is that about 10 seamless two-phase stainless-steel pipe technique is simple, and production difficulty is little, and common stainless steel seamless steel tubing mill all can produce.For the seamless tube of diameter-wall-rate 3～5, hot and cold processing all can exceed the ability category of production unit, production difficulty is very large, adopt the manufacture method of existing seamless two-phase stainless-steel pipe can't satisfy product requirement at all, therefore, the seamless two-phase stainless-steel pipe of diameter-wall-rate 3～5 there is no production technique at present.
In addition, the tissue that duplex stainless steel has austenite and two of ferrites and deposits, thermoplasticity is relatively poor, and austenite is different with ferritic deformation mechanism under the high temperature, and inhomogeneous stress and strain distributes and causes easily crackle to be expanded in phase boundary during hot-work.Simultaneously, the mechanical property of duplex stainless steel is more than 2 times of austenitic stainless steel, and surrender and tensile strength are high, and unit elongation is lower, and cold-forming property is relatively poor.Therefore, there is no case in the producing country for diameter-wall-rate 3～5 seamless two-phase stainless-steel pipes.
Summary of the invention
In order to overcome the above-mentioned deficiency of the manufacture method that has seamless two-phase stainless-steel pipe now, a kind of manufacture method of seamless two-phase stainless-steel pipe of diameter-wall-rate 3～5 is provided, satisfies the standard-required of GB/T21833-2008 and ASMESA789/790M with the performance of the seamless two-phase stainless-steel pipe of manufacturing of the present invention.
Aim of the present invention is for diameter-wall-rate 3～5 hot and cold deformation technique of duplex phase stainless tube trimmed size rational and device parameters, because the cold hardening effect of duplex stainless steel is large, so the cold-drawing technology of gross distortion hot extrusion+small deformation multi-pass has been adopted in cold working.
The manufacture method of this seamless two-phase stainless-steel pipe comprises cold-drawn and thermal treatment, it is characterized in that: the diameter-wall-rate of the seamless two-phase stainless-steel pipe of its manufacturing is 3～5, and the relative reduction in area of hot extrusion is not less than 60%; The cold-drawn of multi-pass (3～5 passage), every time relative reduction in area is not more than 20%; All carry out one time heat-treatment of annealing after every time cold-drawn.
Say that in detail the manufacture method of this seamless two-phase stainless-steel pipe comprises following step successively:
IHot extrusion
Blank prepares to adopt Φ 219～Φ 247mm forging blank, depth drill processing Φ 40～Φ 60mm central through hole;
The preheating in ring furnace of blank preheated charge, ring furnace temperature arrange 700 ± 10 ℃, the 3h ± 5min of time in the stove;
The induction heating blank is put into the medium-frequency induction furnace induction heating, 1180 ± 10 ℃ of induction heating target temperatures, soaking time 1～3min, heating power 600～650KW, insulation power ≯ 200KW.
The extruding tool and mould of Φ 78 * 16～Φ 140 * 40mm is adopted in the extruding extruding, and relative reduction in area is not less than 60%, finishes solid solution in 30 ± 5s after the extruding.
The outside dimension of steel pipe is 78～140mm after the extruding, and wall thickness is 16～40mm.Again successively through aligning, pickling, reconditioning, lubricated.
IICold-drawn
The first passage: Φ 78～Φ 140mm is drawn to Φ 71～Φ 133mm
,The process control relative reduction in area is not more than 20%;
Steel pipe after the first passage cold-drawn is heat-treated after degreasing.
IIIThermal treatment
Steel pipe after the first passage cold-drawn, thermal treatment in the continuous roller bottom type annealing furnace of after degreasing, packing into, 1080 ± 10 ℃ of target temperatures, soaking time is not less than 3min/mm; The solid solution of laggard horizontal high voltage water spray is finished in insulation, guarantees that cold-zone speed is not less than 25 ℃/s.
. through aligning, pickling, reconditioning, lubricated, again the second passage cold-drawn.
IVCold-drawn
The second passage: Φ 71～Φ 133mm is drawn to Φ 64～Φ 126mm, and the process control relative reduction in area is not more than 20%;
Steel pipe after the second passage cold-drawn is heat-treated after degreasing.
VThermal treatment
Steel pipe after the second passage cold-drawn, thermal treatment in the continuous roller bottom type annealing furnace of after degreasing, packing into, 1080 ± 10 ℃ of target temperatures, soaking time is not less than 3min/mm; The solid solution of laggard horizontal high voltage water spray is finished in insulation, guarantees that cold-zone speed is not less than 25 ℃/s.
Align after the thermal treatment, pickling, reconditioning, lubricated, again the 3rd passage cold-drawn.
VICold-drawn
The 3rd passage: Φ 64～Φ 126mm is drawn to Φ 57～Φ 119mm, and the process control relative reduction in area is not more than 20%;
Steel pipe after the 3rd passage cold-drawn is heat-treated after degreasing.
XIIThermal treatment
Steel pipe after the 3rd passage cold-drawn, thermal treatment in the continuous roller bottom type annealing furnace of after degreasing, packing into, 1060 ± 10 ℃ of target temperatures, soaking time is not less than 3min/mm; The solid solution of laggard horizontal high voltage water spray is finished in insulation, guarantees that cold-zone speed is not less than 25 ℃/s.Steel pipe after the 3rd passage cold-drawn postheat treatment is aligned, pickling is finished product.
Remarks: (or user) technical need based on contract, can carry out the corresponding increase of passage.
Could put in storage through check, flaw detection.
The present invention efficiently solves the cold and hot working distortion hard problem of diameter-wall-rate 3～5 seamless two-phase stainless-steel pipes, gross distortion hot extrusion process relative reduction in area reaches more than 60%; the cold working relative reduction in area of small deformation ≯ 20%, has guaranteed specification and the physicochemical property of production tube.
The undoubtedly pipe that the manufacture method of seamless two-phase stainless-steel pipe of the present invention is made, performance satisfies the standard-required of GB/T21833-2008 and ASMESA789/790M.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with embodiment, but the specific embodiment of the present invention is not limited to following embodiment.
Embodiment
The present embodiment manufacturing be diameter-wall-rate ≯ 5 seamless two-phase stainless-steel pipes, require as follows:
Material: S32205;
Specification: Φ 57 * 16.5mm;
Technical requirements: acid wash passivation
Take following technique:
Φ 219/50(extruding) → 78 * 18(cold-drawn) → 71 * 17.5 (cold-drawn) → 65 * 17 (cold-drawn) → 57 * 16.5
The manufacture method of this seamless two-phase stainless-steel pipe comprises following step successively:
IHot extrusion
1 blank prepares to adopt Φ 219mm forging blank, depth drill processing Φ 40mm central through hole;
2 blank preheated charge preheatings in ring furnace, the ring furnace temperature arranges 700 ℃, the 3h of time in the stove;
3 induction heating blanks are put into the medium-frequency induction furnace induction heating, 1180 ℃ of induction heating target temperatures, soaking time 1min, heating power 600KW, insulation power 180KW.
The extruding tool and mould of Φ 78 * 18mm is adopted in 4 extruding extruding, and relative reduction in area is 91.6%, finishes solid solution in the 30s after the extruding.
The outside dimension of steel pipe is 77.2～77.4mm after 5 extruding, and wall thickness is 17.8～18.0mm.Again successively through aligning, pickling, reconditioning, lubricated.
IICold-drawn
The first passage: Φ 78 * 18mm is drawn to Φ 71 * 17.5mm operation;
Outer diameter of steel pipes is of a size of 71.1～71.2mm after the cold-drawn, and wall thickness is 17.3～17.5mm;
Steel pipe after the first passage cold-drawn is heat-treated after degreasing.
IIIThermal treatment
Steel pipe after the first passage cold-drawn, thermal treatment in the continuous roller bottom type annealing furnace of after degreasing, packing into, 1080 ℃ of target temperatures, soaking time 3min/mm; The solid solution of laggard horizontal high voltage water spray is finished in insulation, guarantees that cold-zone speed is not less than 25 ℃/s.
. through aligning, pickling, reconditioning, lubricated, again the second passage cold-drawn.
IVCold-drawn
The second passage: Φ 71 * 17.5mm is drawn to Φ 65 * 17mm operation;
Outer diameter of steel pipes is of a size of 65.0～65.1mm after the cold-drawn, and wall thickness is 16.8～17.0mm;
Steel pipe after the second passage cold-drawn is heat-treated after degreasing.
VThermal treatment
Steel pipe after the second passage cold-drawn, thermal treatment in the continuous roller bottom type annealing furnace of after degreasing, packing into, 1080 ℃ of target temperatures, soaking time 3min/mm; The solid solution of laggard horizontal high voltage water spray is finished in insulation, guarantees that cold-zone speed is not less than 25 ℃/s.
Align after the thermal treatment, pickling, reconditioning, lubricated, again the 3rd passage cold-drawn.
VICold-drawn
The 3rd passage: Φ 65 * 17mm is drawn to Φ 57 * 16.5mm operation;
Outer diameter of steel pipes is of a size of 57.0～57.1mm after the cold-drawn, and wall thickness is 16.4～16.6mm;
Steel pipe after the 3rd passage cold-drawn is heat-treated after degreasing.
XIIThermal treatment
Steel pipe after the 3rd passage cold-drawn, thermal treatment in the continuous roller bottom type annealing furnace of after degreasing, packing into, 1060 ℃ of target temperatures, soaking time 3min/mm; The solid solution of laggard horizontal high voltage water spray is finished in insulation, guarantees that cold-zone speed is not less than 25 ℃/s.Steel pipe after the 3rd passage cold-drawn postheat treatment is aligned, pickling is finished product.
Could put in storage through check, flaw detection.
The wall thickness of steel pipe is even, and physicochemical property is qualified, satisfies service requirements.Select three passage cold-drawns, resistance to deformation is little, and Cold Drawing Process is without scuffing, excellent surface quality.
The seamless two-phase stainless-steel pipe that present embodiment is made, mechanical property satisfies GB/T21833-2008 " austenite-ferrite two-phase stainless steel seamless steel tube " and ASMESA789/790M " the austenite-ferrite duplex stainless steel is seamless and Welded Steel Pipe " standard-required.The various technical parameters of present embodiment see the following form:
Physicochemical property
Claims (2)
1. the manufacture method of a seamless two-phase stainless-steel pipe, it comprises cold-drawn and thermal treatment, it is characterized in that: the diameter-wall-rate of the seamless two-phase stainless-steel pipe of its manufacturing is 3～5, and the relative reduction in area of hot extrusion is not less than 60%; Adopt the cold-drawn of 3～5 passages, every time relative reduction in area is not more than 20%; All carry out one time heat-treatment of annealing after every time cold-drawn.
2. the manufacture method of seamless two-phase stainless-steel pipe according to claim 1, its steps characteristic is:
IHot extrusion
Blank prepares to adopt Φ 219～Φ 247mm forging blank, depth drill processing Φ 40～Φ 60mm central through hole;
The preheating in ring furnace of blank preheated charge, ring furnace temperature arrange 700 ± 10 ℃, the 3h ± 5min of time in the stove;
The induction heating blank is put into the medium-frequency induction furnace induction heating, 1180 ± 10 ℃ of induction heating target temperatures, soaking time 1～3min;
The extruding tool and mould of Φ 78 * 16～Φ 140 * 40mm is adopted in the extruding extruding, and relative reduction in area is not less than 60%, finishes solid solution in 30 ± 5s after the extruding;
The outside dimension of steel pipe is 78～140mm after the extruding, and wall thickness is 16～40mm; Again successively through aligning, pickling, reconditioning, lubricated;
IICold-drawn
The first passage: Φ 78～Φ 140mm is drawn to Φ 71～Φ 133mm
,The process control relative reduction in area is not more than 20%;
Steel pipe after the first passage cold-drawn is heat-treated after degreasing;
IIIThermal treatment
The steel pipe of the first passage cold-drawn after by degreasing, thermal treatment in the continuous roller bottom type annealing furnace of packing into, 1080 ± 10 ℃ of target temperatures, soaking time is not less than 3min/mm; The solid solution of laggard horizontal high voltage water spray is finished in insulation, guarantees that cold-zone speed is not less than 25 ℃/s; . through aligning, pickling, reconditioning, lubricated, again the second passage cold-drawn;
IVCold-drawn
The second passage: Φ 71～Φ 133mm is drawn to Φ 64～Φ 126mm, and the process control relative reduction in area is not more than 20%;
Steel pipe after the second passage cold-drawn is heat-treated after degreasing;
VThermal treatment
Steel pipe after the second passage cold-drawn, thermal treatment in the continuous roller bottom type annealing furnace of after degreasing, packing into, 1080 ± 10 ℃ of target temperatures, soaking time is not less than 3min/mm; The solid solution of laggard horizontal high voltage water spray is finished in insulation, guarantees that cold-zone speed is not less than 25 ℃/s; Align after the thermal treatment, pickling, reconditioning, lubricated, again the 3rd passage cold-drawn;
VICold-drawn
The 3rd passage: Φ 64～Φ 126mm is drawn to Φ 57～Φ 119mm, and the process control relative reduction in area is not more than 20%;
Steel pipe after the 3rd passage cold-drawn is heat-treated after degreasing;
XIIThermal treatment
Steel pipe after the 3rd passage cold-drawn, thermal treatment in the continuous roller bottom type annealing furnace of after degreasing, packing into, 1060 ± 10 ℃ of target temperatures, soaking time is not less than 3min/mm; The solid solution of laggard horizontal high voltage water spray is finished in insulation, guarantees that cold-zone speed is not less than 25 ℃/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310010343.1A CN103045837B (en) | 2013-01-11 | 2013-01-11 | Manufacturing method of duplex-phase stainless seamless tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310010343.1A CN103045837B (en) | 2013-01-11 | 2013-01-11 | Manufacturing method of duplex-phase stainless seamless tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103045837A true CN103045837A (en) | 2013-04-17 |
| CN103045837B CN103045837B (en) | 2015-05-06 |
Family
ID=48058696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310010343.1A Active CN103045837B (en) | 2013-01-11 | 2013-01-11 | Manufacturing method of duplex-phase stainless seamless tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103045837B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317305A (en) * | 2013-06-08 | 2013-09-25 | 宝鸡市天瑞有色金属材料有限责任公司 | Process for manufacturing small-bore nickel base alloy seamless square tubes |
| CN103599957A (en) * | 2013-11-18 | 2014-02-26 | 山西太钢不锈钢股份有限公司 | Extruding molding method of austenitic stainless steel seamless pipe for hydrogenation cracking furnace |
| CN103769433A (en) * | 2014-01-06 | 2014-05-07 | 山西太钢不锈钢股份有限公司 | Production method for stainless steel pipe for photo-thermal power generation |
| CN104668892A (en) * | 2013-12-02 | 2015-06-03 | 江西昌河航空工业有限公司 | Shell nosing machining technology method for pull rod of helicopter |
| CN104826890A (en) * | 2015-05-09 | 2015-08-12 | 山西太钢不锈钢股份有限公司 | Manufacturing method of super austenitic stainless steel seamless tube |
| CN106282511A (en) * | 2015-05-18 | 2017-01-04 | 宝钢特钢有限公司 | A kind of pipe-making method of seamless two-phase stainless-steel pipe |
| 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 |
| CN106337105A (en) * | 2016-08-29 | 2017-01-18 | 中国科学院金属研究所 | Heat treatment method for antibacterial double-phase stainless steel material |
| CN106583491A (en) * | 2016-12-23 | 2017-04-26 | 山西太钢不锈钢股份有限公司 | Method for manufacturing Cr-Ni-Mo-Nb nickel base alloy seamless tube |
| CN106938285A (en) * | 2017-04-28 | 2017-07-11 | 山西太钢不锈钢股份有限公司 | A kind of manufacture method of stainless steel square tube |
| CN110538890A (en) * | 2019-09-04 | 2019-12-06 | 山西太钢不锈钢股份有限公司 | Manufacturing method of UNS 32906 seamless tube |
| CN111644483A (en) * | 2020-04-29 | 2020-09-11 | 浙江正同管业有限公司 | Forming method of stainless steel pipe |
| CN112934995A (en) * | 2021-02-01 | 2021-06-11 | 中国航空制造技术研究院 | Preparation method and system of alloy capillary tube |
| CN114160604A (en) * | 2021-11-23 | 2022-03-11 | 浙江久立特材科技股份有限公司 | Stainless steel seamless pipe and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1585353A1 (en) * | 1988-07-12 | 1990-08-15 | Днепропетровский Металлургический Институт | Method of producing pipes |
| DD284420A5 (en) * | 1989-05-29 | 1990-11-14 | Veb Rohrkombinat Stahl- Und Walzwerk Riesa,Dd | METHOD FOR THE PRODUCTION OF SEAMLESS PIPES FROM AUTOMATIC STEEL |
| CN1721128A (en) * | 2004-07-14 | 2006-01-18 | 天津市天材科技发展有限公司 | Cold working process for high Cr ferrite stainless steel seamless pipe |
| CN101733303A (en) * | 2008-11-27 | 2010-06-16 | 宝山钢铁股份有限公司 | Method for making 17-7PH thick wall seamless pipe |
| CN101755059A (en) * | 2007-07-20 | 2010-06-23 | 住友金属工业株式会社 | Process for production of duplex stainless steel tubes |
| CN102494196A (en) * | 2011-12-23 | 2012-06-13 | 江苏银环精密钢管股份有限公司 | Method for manufacturing copper steel duplex metal composite tube |
-
2013
- 2013-01-11 CN CN201310010343.1A patent/CN103045837B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1585353A1 (en) * | 1988-07-12 | 1990-08-15 | Днепропетровский Металлургический Институт | Method of producing pipes |
| DD284420A5 (en) * | 1989-05-29 | 1990-11-14 | Veb Rohrkombinat Stahl- Und Walzwerk Riesa,Dd | METHOD FOR THE PRODUCTION OF SEAMLESS PIPES FROM AUTOMATIC STEEL |
| CN1721128A (en) * | 2004-07-14 | 2006-01-18 | 天津市天材科技发展有限公司 | Cold working process for high Cr ferrite stainless steel seamless pipe |
| CN101755059A (en) * | 2007-07-20 | 2010-06-23 | 住友金属工业株式会社 | Process for production of duplex stainless steel tubes |
| CN101733303A (en) * | 2008-11-27 | 2010-06-16 | 宝山钢铁股份有限公司 | Method for making 17-7PH thick wall seamless pipe |
| CN102494196A (en) * | 2011-12-23 | 2012-06-13 | 江苏银环精密钢管股份有限公司 | Method for manufacturing copper steel duplex metal composite tube |
Non-Patent Citations (3)
| Title |
|---|
| 《钢管》 20120228 丁文炎等 "热挤压+冷轧"制造022Cr25Ni7Mo4N无缝钢管的工艺技术研究 第41卷, 第1期 * |
| 丁文炎等: ""热挤压+冷轧"制造022Cr25Ni7Mo4N无缝钢管的工艺技术研究", 《钢管》 * |
| 苏承龙: "超低碳不锈钢HR一1挤压管试制工艺研讨", 《特钢技术》 * |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317305A (en) * | 2013-06-08 | 2013-09-25 | 宝鸡市天瑞有色金属材料有限责任公司 | Process for manufacturing small-bore nickel base alloy seamless square tubes |
| CN103317305B (en) * | 2013-06-08 | 2015-08-12 | 宝鸡市天瑞有色金属材料有限责任公司 | The preparation method of square tube that small-bore nickel-base alloy is seamless |
| CN103599957A (en) * | 2013-11-18 | 2014-02-26 | 山西太钢不锈钢股份有限公司 | Extruding molding method of austenitic stainless steel seamless pipe for hydrogenation cracking furnace |
| CN103599957B (en) * | 2013-11-18 | 2016-03-30 | 山西太钢不锈钢股份有限公司 | A kind of extrusion process of hydrocracking stove austenitic stainless steel seamless pipe |
| CN104668892A (en) * | 2013-12-02 | 2015-06-03 | 江西昌河航空工业有限公司 | Shell nosing machining technology method for pull rod of helicopter |
| CN104668892B (en) * | 2013-12-02 | 2018-01-16 | 江西昌河航空工业有限公司 | Helicopter closed-up pull rod processing technology |
| CN103769433A (en) * | 2014-01-06 | 2014-05-07 | 山西太钢不锈钢股份有限公司 | Production method for stainless steel pipe for photo-thermal power generation |
| CN103769433B (en) * | 2014-01-06 | 2015-10-28 | 山西太钢不锈钢股份有限公司 | Photo-thermal power generation stainless steel tube production method |
| CN104826890A (en) * | 2015-05-09 | 2015-08-12 | 山西太钢不锈钢股份有限公司 | Manufacturing method of super austenitic stainless steel seamless tube |
| CN106282511A (en) * | 2015-05-18 | 2017-01-04 | 宝钢特钢有限公司 | A kind of pipe-making method of seamless two-phase stainless-steel pipe |
| CN106337105A (en) * | 2016-08-29 | 2017-01-18 | 中国科学院金属研究所 | Heat treatment method for antibacterial double-phase stainless steel material |
| CN106337105B (en) * | 2016-08-29 | 2018-02-16 | 中国科学院金属研究所 | A kind of heat treatment method of antibacterial duplex stainless steel material |
| 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 |
| 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 |
| CN106583491A (en) * | 2016-12-23 | 2017-04-26 | 山西太钢不锈钢股份有限公司 | Method for manufacturing Cr-Ni-Mo-Nb nickel base alloy seamless tube |
| CN106583491B (en) * | 2016-12-23 | 2018-12-04 | 山西太钢不锈钢股份有限公司 | A kind of manufacturing method of Cr-Ni-Mo-Nb nickel-base alloy seamless pipe |
| CN106938285A (en) * | 2017-04-28 | 2017-07-11 | 山西太钢不锈钢股份有限公司 | A kind of manufacture method of stainless steel square tube |
| CN106938285B (en) * | 2017-04-28 | 2018-12-28 | 山西太钢不锈钢股份有限公司 | A kind of manufacturing method of stainless steel square tube |
| CN110538890A (en) * | 2019-09-04 | 2019-12-06 | 山西太钢不锈钢股份有限公司 | Manufacturing method of UNS 32906 seamless tube |
| CN111644483A (en) * | 2020-04-29 | 2020-09-11 | 浙江正同管业有限公司 | Forming method of stainless steel pipe |
| CN112934995A (en) * | 2021-02-01 | 2021-06-11 | 中国航空制造技术研究院 | Preparation method and system of alloy capillary tube |
| CN114160604A (en) * | 2021-11-23 | 2022-03-11 | 浙江久立特材科技股份有限公司 | Stainless steel seamless pipe and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103045837B (en) | 2015-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103045837B (en) | Manufacturing method of duplex-phase stainless seamless tube | |
| CN106583491B (en) | A kind of manufacturing method of Cr-Ni-Mo-Nb nickel-base alloy seamless pipe | |
| CN100491063C (en) | Method for producing metallurgically binding metal composite seamless pipe | |
| CN104826890B (en) | A kind of manufacture method of super austenitic stainless steel seamless pipe | |
| CN104827245B (en) | A kind of forging technology of bearing ring | |
| CN102172822B (en) | Processing technology for high-precision heavy wall pipe | |
| CN103128102B (en) | Production method of titanium alloy oil well pipe | |
| CN102836895A (en) | Method for manufacturing special-shaped seamless steel pipe | |
| CN101985136B (en) | Method for preparing BFe10-1-1 alloy pipe | |
| CN102274854A (en) | Process for manufacturing superascoloy stainless steel tube | |
| CN102921763A (en) | Seamless steel tube processing technology | |
| CN102632182B (en) | Forging molding process for integral hollow nuclear power main pipe | |
| CN102953019A (en) | Alloy steel seamless steel tube for geological drilling and machining method thereof | |
| CN108421839B (en) | A kind of flat-bulb steel diplopore model extrusion method | |
| CN104174685B (en) | Turbine rotor groove is carved by profiled bar and processing method thereof | |
| CN102039326A (en) | Method for preparing bimetallic seamless steel pipe for alkali recovery boiler | |
| CN105441713A (en) | A titanium alloy seamless tube and a manufacturing method thereof | |
| WO2012003691A1 (en) | Planetary pipe rolling mill and planetary rolling method for copper alloy pipe | |
| CN103599957A (en) | Extruding molding method of austenitic stainless steel seamless pipe for hydrogenation cracking furnace | |
| CN105364412A (en) | Manufacturing method of cold-drawn high-strength fine-boring rolled pipe | |
| CN105363825A (en) | Manufacturing method of cold-drawn high-precision cylinder barrel pipe | |
| CN107012363A (en) | A kind of manufacturing process of TC4 titanium alloy oil well pipes | |
| CN104805264A (en) | Heat treatment method for 15NiCuMoNb5 steel pipe | |
| CN101768659B (en) | Heat treatment technology of ultra-long mandrel | |
| CN107138522A (en) | A kind of cold-forging steel containing Cr hot rolling wire production method of easy pickling after annealing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |