CN105817780B - A kind of method for controlling composite bimetal pipe pipe end built-up welding size - Google Patents

A kind of method for controlling composite bimetal pipe pipe end built-up welding size Download PDF

Info

Publication number
CN105817780B
CN105817780B CN201610251257.3A CN201610251257A CN105817780B CN 105817780 B CN105817780 B CN 105817780B CN 201610251257 A CN201610251257 A CN 201610251257A CN 105817780 B CN105817780 B CN 105817780B
Authority
CN
China
Prior art keywords
pipe
composite bimetal
base tube
reducer
welding
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.)
Active
Application number
CN201610251257.3A
Other languages
Chinese (zh)
Other versions
CN105817780A (en
Inventor
王斌
吴立斌
梁国栋
刁东良
吴泽
孙兵
傅海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Sunward Aerospace Material Co Ltd
Original Assignee
Xian Sunward Aerospace Material Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xian Sunward Aerospace Material Co Ltd filed Critical Xian Sunward Aerospace Material Co Ltd
Priority to CN201610251257.3A priority Critical patent/CN105817780B/en
Publication of CN105817780A publication Critical patent/CN105817780A/en
Application granted granted Critical
Publication of CN105817780B publication Critical patent/CN105817780B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/027—Making tubes with soldering or welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/003—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to controlling of welding distortion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/004—Filling of continuous seams
    • B23K33/006—Filling of continuous seams for cylindrical workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/04—Welding for other purposes than joining, e.g. built-up welding
    • B23K9/044—Built-up welding on three-dimensional surfaces
    • B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution

Abstract

The invention discloses it is a kind of control composite bimetal pipe pipe end built-up welding size method, including：First, the end of the bushing pipe of the composite bimetal pipe after machining is made to form intilted inclined-plane end machining one section of bushing pipe of removal of composite bimetal pipe, and the inside of exposed base tube machines annular groove after one section of bushing pipe is removed, and is arc transition between the annular groove and the inclined-plane；The 2nd, expander die is packed into the both ends of the composite bimetal pipe after machining, expanding processing is carried out to the base tube both ends of composite bimetal pipe；3rd, expander die is taken out, pipe end inner wall overlaying is carried out to expanding treated composite bimetal pipe, the overlay cladding then formed to built-up welding finishes, and completes the pipe end built-up welding of composite bimetal pipe.The method of the present invention effectively solves the problems, such as base tube bottlenecking, ensures the outer diameter of pipe end.

Description

A kind of method for controlling composite bimetal pipe pipe end built-up welding size
Technical field
The invention belongs to composites processing technology fields, and in particular to a kind of control composite bimetal pipe pipe end built-up welding ruler Very little method.
Background technology
Composite bimetal pipe pipe end inner wall overlaying has the following problems in terms of pipe end size：First, due to pipe end inner wall heap The heat input of weldering is larger, and molten bath can generate powerful shrinkage tensile stress during solidification, and pipe end is caused necking occur and is showed As closer to pipe end, necking is more serious, and thin-wall tube is easier larger necking phenomenon occur；Necking can cause pipe end outer diameter ruler There is off-dimension phenomenon in the very little lower limit less than standard size claimed range；2nd, the composite bimetal pipe that pipe end heap is soldered shows Field need to carry out butt welding, therefore pipe end inner wall overlaying layer need to be finished, to ensure the uniformity of pipe end internal diameter, when making counterpart Be not in larger misalignment, but if pipe end will ensure internal diameter there are larger necking phenomenon when inner wall finishes The reduction of pipe end wall thickness (thickness of steel pipe and corrosion-resistant alloy layer wall thickness) is caused while consistent, causes the unqualified phenomenon of wall thickness.
The mode of nozzle undergauge can simply be controlled to reserve certain surplus without built-up welding for pipe end at present, built-up welding is completed The pre- allowance of pipe end is cut away afterwards, to reduce influence of the undergauge to pipe end size, but this method there are the problem of be：Pipe end The reserved part cut away can cause serious waste of material, while even if cutting away a part, due to the receipts generated in weld deposit process Contracting tensile stress can still cause the undergauge by a small margin in entire overlay cladding region, and pipe end wall thickness reduction, pressure-bearing are caused after finishing Ability reduces；For thin-wall tube, even if pipe end reserves certain surplus, bottlenecking is still serious, can not be fundamentally Solve the problems, such as the undergauge of pipe end built-up welding.
The content of the invention
The technical problems to be solved by the invention are in view of the above shortcomings of the prior art, to provide a kind of control bimetallic The method of multiple tube pipe end built-up welding size.This method machines groove before pipe end inner wall overlaying to composite bimetal pipe, then Expanding processing is carried out to the base tube after machining groove using special expander die, after taking out mold, pipe end can generate a tentering The rebound of degree, in weld deposit process, pipe end can slowly generate contraction, by the control to expander die size, can make built-up welding After base tube pipe end be just contracted to the full size of base tube, effectively solve the problems, such as base tube bottlenecking, ensure pipe end Outer diameter.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of control composite bimetal pipe pipe end heap The method for welding size, which is characterized in that comprise the following steps：
Step 1: end machining one section of bushing pipe of removal of composite bimetal pipe is made into the composite bimetal pipe after machining The end of bushing pipe form intilted inclined-plane, and after one section of bushing pipe is removed exposed base tube inside machining ring Connected in star, for arc transition between the annular groove and the inclined-plane, be machined on base tube annular groove position it is interior Footpath is D, unit mm, and the distance between the end of the base tube after machining and the inner wall end of bushing pipe are L, unit mm；
Step 2: expander die to be fitted into the both ends of the composite bimetal pipe after being machined in step 1, bimetallic is answered The base tube both ends for closing pipe carry out expanding processing, and the expander die includes reducer and isometrical section be connected with reducer, described Isometrical section of diameter is more than the diameter of reducer and isometrical section of one end for being located at reducer diameter maximum, the minimum of the reducer A diameter of Dm, unit mm, the length of reducer is Lm, unit mm, the angle between the outer wall of reducer and the inner wall of base tube For α, wherein Dm＜ D ＜ Dm+2LmTan α, the length that expander die is packed into composite bimetal pipe are L1, unit mm, L1＜ L；
Step 3: taking out expander die described in step 2, expanding treated composite bimetal pipe is carried out in pipe end Wall built-up welding, the overlay cladding then formed to built-up welding finish, and complete the pipe end built-up welding of composite bimetal pipe.
A kind of method of above-mentioned control composite bimetal pipe pipe end built-up welding size, which is characterized in that L described in step 1 Value be 20mm~200mm.
A kind of method of above-mentioned control composite bimetal pipe pipe end built-up welding size, which is characterized in that α described in step 2 Value be 3 °~10 °.
The present invention has the following advantages compared with prior art：
1st, the present invention machines groove before pipe end inner wall overlaying to composite bimetal pipe, then using special expander die Expanding processing is carried out to the base tube after machining groove, after taking out mold, pipe end can generate the rebound of certain amplitude, in built-up welding Cheng Zhong, pipe end can slowly generate contraction, and by the control to expander die size, after can making built-up welding, base tube pipe end is just The full size of base tube is contracted to, effectively solves the problems, such as base tube bottlenecking, ensures the outer diameter of pipe end.
2nd, method using the present invention need not can be avoided to prevent bottlenecking and pre- in pipe end reserved margin The waste of material that certain excision remainder punching is stayed to bring, and overlay cladding need to only be finished after built-up welding, no A part of base tube of excision pipe end is needed, therefore waste will not be generated.
3rd, method using the present invention can effectively control the uniformity and uniformity of pipe end overlay cladding wall thickness dimension, from And ensure pipe end overlay cladding properties, it is particularly ensured that the uniformity and uniformity of corrosion resistance.
4th, method using the present invention does not interfere with the free shrink phenomenon of weld deposit process, therefore overlay cladding will not generate Residual stress ensures that the quality of overlay cladding and performance are unaffected.
5th, method using the present invention while pipe end size is ensured, can effectively ensure the accurate right of butt welding Mouth greatly improves the counterpart efficiency and welding quality of butt welding.
In conclusion this method processing step is simple, process is easily-controllable and welding quality is good, existing bimetallic can be effectively solved The problems such as multiple tube pipe end built-up welding undergauge is serious, off-dimension.
With reference to the accompanying drawings and examples, technical scheme is described in further detail.
Description of the drawings
Fig. 1 be the present invention machining groove after composite bimetal pipe pipe end structure diagram.
Fig. 2 is the structure diagram of expander die of the present invention.
The position relationship schematic diagram of expander die and composite bimetal pipe when Fig. 3 is expanding processing of the invention.Reference numeral Explanation：
1-base tube；2-bushing pipe；3-reducer；
4-isometrical section.
Specific embodiment
Embodiment 1
This example treats the composite bimetal pipe specification of built-up welding as Φ 219 × (10+3) mm, and the material of wherein base tube is L360QS, wall thickness 10mm, bushing pipe material are 825, wall thickness 3mm.
Specifically overlaying method is：
Comprise the following steps：
Step 1: as shown in Figure 1, after end machining one section of bushing pipe 2 of removal of composite bimetal pipe is made machining The end of the bushing pipe 2 of composite bimetal pipe forms intilted inclined-plane, and the exposed base tube after one section of bushing pipe 2 is removed 1 inside machining annular groove, is arc transition between the annular groove and the inclined-plane, ring is machined on base tube 1 The internal diameter D at the position of connected in star is 201mm, the distance between the end of the base tube 1 after machining and the inner wall end of bushing pipe 2 L For 60mm；
Step 2: expander die to be fitted into the both ends of the composite bimetal pipe after being machined in step 1, bimetallic is answered 1 both ends of base tube for closing pipe carry out expanding processing, as shown in Fig. 2, the expander die includes reducer 3 and is connected with reducer 3 Isometrical section 4, described isometrical section 4 of diameter be more than the diameter of reducer 3 and isometrical section 4 be located at 3 diameter of reducer it is maximum one End, the minimum diameter D of the reducer 3mFor 200mm, the length L of reducer 3mFor 90mm, outer wall and the base tube 1 of reducer 3 Angle α between inner wall is 5 °, and the length that expander die is packed into composite bimetal pipe is L1For 40mm；
Step 3: taking out expander die described in step 2, certain rebound, 1 end of base tube after rebound occur for 1 end of base tube Angle between central axes is decreased to 3 °, under inert gas shielding, using full-automatic TT welderings to expanding treated double gold Belong to multiple tube and carry out pipe end inner wall overlaying, the overlay cladding then formed to built-up welding finishes, and completes composite bimetal pipe Pipe end built-up welding.
The pipe end size and built-up welding layer thickness of composite bimetal pipe after being finished to the present embodiment are detected, in pipe end Footpath is 193mm, and internal diameter size deviation is ± 0.3mm, and overlay cladding Thickness sensitivity is qualified, and detected value is all higher than 3.0mm；Simultaneously to pipe The mechanical property for holding expanding place be detected (only mechanical property is impacted due to expanding, will not be to the corrosivity of overlay cladding Can be impacted with chemical composition, therefore only carry out the checking test of mechanical property), detection content includes mechanical stretch, is oriented to Bending and Charpy-type test, result of the test are as follows：
The mechanical stretch result of the test of the composite bimetal pipe of 1 embodiment of table, 1 pipe end heap postwelding
The guided bend test result of the composite bimetal pipe of 2 embodiment of table, 1 pipe end heap postwelding
The Charpy-type test result of the composite bimetal pipe of 3 embodiment of table, 1 pipe end heap postwelding
From the testing result of table 1, table 2 and table 3, it is apparent that the pipe end of the composite bimetal pipe of the present embodiment built-up welding Overlay cladding mechanical property is satisfied by the requirement of standard, expanding that pipe end overlay cladding mechanical property is not impacted.
Embodiment 2
This example treats the composite bimetal pipe specification of built-up welding as Φ 114.3 × (10+2) mm, and the material of wherein base tube is L245N, wall thickness 10mm, bushing pipe material are 316L, wall thickness 2mm.
Specifically overlaying method is：
Comprise the following steps：
Step 1: as shown in Figure 1, after end machining one section of bushing pipe 2 of removal of composite bimetal pipe is made machining The end of the bushing pipe 2 of composite bimetal pipe forms intilted inclined-plane, and the exposed base tube after one section of bushing pipe 2 is removed 1 inside machining annular groove, is arc transition between the annular groove and the inclined-plane, ring is machined on base tube 1 The internal diameter D at the position of connected in star is 96mm, and the end of the base tube 1 after machining is with the distance between the inner wall end of bushing pipe 2 L 20mm；
Step 2: expander die to be fitted into the both ends of the composite bimetal pipe after being machined in step 1, bimetallic is answered 1 both ends of base tube for closing pipe carry out expanding processing, as shown in Fig. 2, the expander die includes reducer 3 and is connected with reducer 3 Isometrical section 4, described isometrical section 4 of diameter be more than the diameter of reducer 3 and isometrical section 4 be located at 3 diameter of reducer it is maximum one End, the minimum diameter D of the reducer 3mFor 95mm, the length L of reducer 3mFor 80mm, outer wall and the base tube 1 of reducer 3 Angle α between inner wall is 10 °, and the length that expander die is packed into composite bimetal pipe is L1For 18mm；
Step 3: taking out expander die described in step 2, certain rebound, 1 end of base tube after rebound occur for 1 end of base tube Angle between central axes is decreased to 6 °, under inert gas shielding, using full-automatic TT welderings to expanding treated double gold Belong to multiple tube and carry out pipe end inner wall overlaying, the overlay cladding then formed to built-up welding finishes, and completes composite bimetal pipe Pipe end built-up welding.
The pipe end size and built-up welding layer thickness of composite bimetal pipe after being finished to the present embodiment are detected, in pipe end Footpath is 90mm, and internal diameter size deviation is ± 0.3mm, and overlay cladding Thickness sensitivity is qualified, and detected value is all higher than 2.5mm；Simultaneously to pipe The mechanical property for holding expanding place be detected (only mechanical property is impacted due to expanding, will not be to the corrosivity of overlay cladding Can be impacted with chemical composition, therefore only carry out the checking test of mechanical property), detection content includes mechanical stretch, is oriented to Bending and Charpy-type test, result of the test are as follows：
The mechanical stretch result of the test of the composite bimetal pipe of 4 embodiment of table, 2 pipe end heap postwelding
The guided bend test result of the composite bimetal pipe of 5 embodiment of table, 2 pipe end heap postwelding
The Charpy-type test result of the composite bimetal pipe of 6 embodiment of table, 2 pipe end heap postwelding
From the testing result of table 4, table 5 and table 6, it is apparent that the pipe end of the composite bimetal pipe of the present embodiment built-up welding Overlay cladding mechanical property is satisfied by the requirement of standard, expanding that pipe end overlay cladding mechanical property is not impacted.
Embodiment 3
This example treats the composite bimetal pipe specification of built-up welding as Φ 610 × (17.5+3) mm, and the material of wherein base tube is L415MS, wall thickness 17.5mm, bushing pipe material are 316L, wall thickness 3mm.
Specifically overlaying method is：
Comprise the following steps：
Step 1: as shown in Figure 1, after end machining one section of bushing pipe 2 of removal of composite bimetal pipe is made machining The end of the bushing pipe 2 of composite bimetal pipe forms intilted inclined-plane, and the exposed base tube after one section of bushing pipe 2 is removed 1 inside machining annular groove, is arc transition between the annular groove and the inclined-plane, ring is machined on base tube 1 The internal diameter D at the position of connected in star is 578mm, the distance between the end of the base tube 1 after machining and the inner wall end of bushing pipe 2 L For 200mm；
Step 2: expander die to be fitted into the both ends of the composite bimetal pipe after being machined in step 1, bimetallic is answered 1 both ends of base tube for closing pipe carry out expanding processing, as shown in Fig. 2, the expander die includes reducer 3 and is connected with reducer 3 Isometrical section 4, described isometrical section 4 of diameter be more than the diameter of reducer 3 and isometrical section 4 be located at 3 diameter of reducer it is maximum one End, the minimum diameter D of the reducer 3mFor 577mm, the length L of reducer 3mFor 150mm, outer wall and the base tube 1 of reducer 3 Inner wall between angle α for 3 °, the length that expander die is packed into composite bimetal pipe is L1For 80mm；
Step 3: taking out expander die described in step 2, certain rebound, 1 end of base tube after rebound occur for 1 end of base tube Angle between central axes is decreased to 2 °, under inert gas shielding, using full-automatic TT welderings to expanding treated double gold Belong to multiple tube and carry out pipe end inner wall overlaying, the overlay cladding then formed to built-up welding finishes, and completes composite bimetal pipe Pipe end built-up welding.
The pipe end size and built-up welding layer thickness of composite bimetal pipe after being finished to the present embodiment are detected, in pipe end Footpath is 566mm, and internal diameter size deviation is ± 0.3mm, and overlay cladding Thickness sensitivity is qualified, and detected value is all higher than 3.0mm；Simultaneously to pipe The mechanical property for holding expanding place be detected (only mechanical property is impacted due to expanding, will not be to the corrosivity of overlay cladding Can be impacted with chemical composition, therefore only carry out the checking test of mechanical property), detection content includes mechanical stretch, is oriented to Bending and Charpy-type test, result of the test are as follows：
The mechanical stretch result of the test of the composite bimetal pipe of 7 embodiment of table, 3 pipe end heap postwelding
The guided bend test result of the composite bimetal pipe of 8 embodiment of table, 3 pipe end heap postwelding
The Charpy-type test result of the composite bimetal pipe of 9 embodiment of table, 3 pipe end heap postwelding
From the testing result of table 7, table 8 and table 9, it is apparent that the pipe end of the composite bimetal pipe of the present embodiment built-up welding Overlay cladding mechanical property is satisfied by the requirement of standard, expanding that pipe end overlay cladding mechanical property is not impacted.
The above is only presently preferred embodiments of the present invention, not the present invention imposed any restrictions, it is every according to the present invention Any simple modification, change and the equivalent structure that technical spirit makees above example change, and still fall within skill of the present invention In the protection domain of art scheme.

Claims (1)

  1. A kind of 1. method for controlling composite bimetal pipe pipe end built-up welding size, which is characterized in that comprise the following steps：
    Step 1: end machining one section of bushing pipe (2) of removal of composite bimetal pipe is made into the composite bimetal pipe after machining The end of bushing pipe (2) form intilted inclined-plane, and after one section of bushing pipe (2) of removal exposed base tube (1) it is interior Side machines annular groove, is arc transition between the annular groove and the inclined-plane, it is recessed that annular is machined on base tube (1) The internal diameter at the position of slot be D, unit mm, between the end of the base tube (1) after machining and the inner wall end of bushing pipe (2) away from From for L, unit mm；The value of the L is 20mm~200mm；
    Step 2: expander die is fitted into the both ends of the composite bimetal pipe after being machined in step 1, to composite bimetal pipe Base tube (1) both ends carry out expanding processing, the expander die includes reducer (3) and isometrical section be connected with reducer (3) (4), the diameter of isometrical section (4) is more than the diameter of reducer (3) and isometrical section (4) are located at reducer (3) diameter maximum One end, the minimum diameter of the reducer (3) is Dm, unit mm, the length of reducer (3) is Lm, unit mm, reducer (3) the angle between outer wall and the inner wall of base tube (1) is α, wherein Dm＜ D ＜ Dm+2LmTan α, expander die are packed into bimetallic The length of multiple tube is L1, unit mm, L1＜ L；The value of the α is 3 °~10 °；
    Step 3: taking out expander die described in step 2, pipe end inner wall heap is carried out to expanding treated composite bimetal pipe Weldering, the overlay cladding then formed to built-up welding finish, and complete the pipe end built-up welding of composite bimetal pipe.
CN201610251257.3A 2016-04-21 2016-04-21 A kind of method for controlling composite bimetal pipe pipe end built-up welding size Active CN105817780B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610251257.3A CN105817780B (en) 2016-04-21 2016-04-21 A kind of method for controlling composite bimetal pipe pipe end built-up welding size

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610251257.3A CN105817780B (en) 2016-04-21 2016-04-21 A kind of method for controlling composite bimetal pipe pipe end built-up welding size

Publications (2)

Publication Number Publication Date
CN105817780A CN105817780A (en) 2016-08-03
CN105817780B true CN105817780B (en) 2018-06-05

Family

ID=56527238

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610251257.3A Active CN105817780B (en) 2016-04-21 2016-04-21 A kind of method for controlling composite bimetal pipe pipe end built-up welding size

Country Status (1)

Country Link
CN (1) CN105817780B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110181228B (en) * 2019-05-17 2021-02-02 东莞材料基因高等理工研究院 Manufacturing process of bimetal mechanical composite bent pipe
CN111843147A (en) * 2020-08-06 2020-10-30 北方民族大学 Electric arc additive manufacturing dissimilar metal tubular component and preparation method thereof
CN113028154A (en) * 2021-03-31 2021-06-25 西安向阳航天材料股份有限公司 Mechanical bimetal composite pipe with thickened pipe end lining layer and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5240168A (en) * 1992-08-20 1993-08-31 The Babcock & Wilcox Company Method for making a composite to carbon steel joint
JP2000071029A (en) * 1998-09-01 2000-03-07 Daido Steel Co Ltd Manufacture of long length double metallic pipe
CN103212602A (en) * 2012-01-18 2013-07-24 番禺珠江钢管有限公司 Mechanical expanding technology of double-layer metal composite welded pipe
CN104019288A (en) * 2014-06-18 2014-09-03 西安向阳航天材料股份有限公司 Bimetal composite pipe and manufacturing process thereof
CN204647722U (en) * 2015-02-09 2015-09-16 天津耀德环保科技有限公司 Novel quick enlarging repairing device
CN105057989A (en) * 2015-08-21 2015-11-18 西安向阳航天材料股份有限公司 Manufacturing method for lining duplex stainless steel composite tube

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5240168A (en) * 1992-08-20 1993-08-31 The Babcock & Wilcox Company Method for making a composite to carbon steel joint
JP2000071029A (en) * 1998-09-01 2000-03-07 Daido Steel Co Ltd Manufacture of long length double metallic pipe
CN103212602A (en) * 2012-01-18 2013-07-24 番禺珠江钢管有限公司 Mechanical expanding technology of double-layer metal composite welded pipe
CN104019288A (en) * 2014-06-18 2014-09-03 西安向阳航天材料股份有限公司 Bimetal composite pipe and manufacturing process thereof
CN204647722U (en) * 2015-02-09 2015-09-16 天津耀德环保科技有限公司 Novel quick enlarging repairing device
CN105057989A (en) * 2015-08-21 2015-11-18 西安向阳航天材料股份有限公司 Manufacturing method for lining duplex stainless steel composite tube

Also Published As

Publication number Publication date
CN105817780A (en) 2016-08-03

Similar Documents

Publication Publication Date Title
CN105817780B (en) A kind of method for controlling composite bimetal pipe pipe end built-up welding size
CN102266876B (en) Forming process and mould of seamless fork-shaped pipe
CN104593702B (en) Male sportsman pressing method
CN103212952B (en) Super large caliber large wall thickness straight-line joint submerged arc welding tube manufacture method
CN103722346A (en) Corrosion-resistant metallurgical composite bimetal longitudinal submerged-arc welded steel pipe and method for manufacturing same
CN104384826A (en) Forging method of GH4169 alloy inner cartridge receiver special-shaped ring part
CN104607512B (en) Bend forming method of large-angle pipeline with high precision, large pipe diameter and small bending diameter ratio
CN102500619A (en) Seamless titanium welded pipe and manufacturing method thereof
CN103170810B (en) Bead-welding method of inner wall of 90-degree bent pipe
CN103084427B (en) Manufacturing method of hardenability steel tube
CN102274901A (en) Cold drawing broaching process for stainless steel tube/plate
CN107774737A (en) Ni-based composite bimetal pipe part moulding process
CN101693338B (en) Preparation method of reducing breeches tee joint
CN109746635B (en) Method for manufacturing large-diameter hyperbolic irregular-penetration special-shaped component with bent pipe
CN103286153A (en) Manufacture method of ultra-large-diameter pipeline extruded nozzles
CN102407426A (en) Method for manufacturing low alloy steel tube of low-temperature pressure vessel
CN204449698U (en) A kind of gasification furnace thin cylinder manufacture process anti-deformation tool
CN104500899A (en) Small-bore bend and method for shielded metal arc welding and surfacing welding of stainless steel on inner wall thereof
CN103231224B (en) The method of straight tube tube blank inner wall built-up welding aftershaping 90 ° of bend pipes
CN104942135B (en) Y type seam-less T-joint pressing process
RU2393949C2 (en) Device to prepare end faces of thin-wall shells for welding
CN108620466A (en) A kind of bimetallic tube numerical-control bending mold and its forming method
CN106064183A (en) A kind of slow cooling method containing Cr, Mo alloy large-size extruding heavy wall steps of manufacturing blanks
CN210566912U (en) Butt welding eccentric reducing elbow used at industrial pipeline turning position and production device thereof
CN105798269A (en) Preparation method of nickel-based duplex metal composite used for fluorine chemical production equipment

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information

Inventor after: Wang Bin

Inventor after: Wu Libin

Inventor after: Liang Guodong

Inventor after: Diao Dongliang

Inventor after: Wu Ze

Inventor after: Sun Bing

Inventor after: Fu Hai

Inventor before: Wang Bin

Inventor before: Wu Libin

Inventor before: Liang Guodong

Inventor before: Liang Guoping

Inventor before: Wu Ze

Inventor before: Sun Bing

Inventor before: Fu Hai

Inventor before: Bian Tianjun

CB03 Change of inventor or designer information
GR01 Patent grant
GR01 Patent grant