CN106001956B - A kind of manufacture method of titanium/steel layer shape composite welded pipe - Google Patents

A kind of manufacture method of titanium/steel layer shape composite welded pipe Download PDF

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CN106001956B
CN106001956B CN201610363788.1A CN201610363788A CN106001956B CN 106001956 B CN106001956 B CN 106001956B CN 201610363788 A CN201610363788 A CN 201610363788A CN 106001956 B CN106001956 B CN 106001956B
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titanium
groove
carbon steel
welding
layer
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CN106001956A (en
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毕宗岳
杨军
田磊
刘海璋
张万鹏
杨耀彬
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China Petroleum and Natural Gas Co Ltd
Baoji Petroleum Steel Pipe Co Ltd
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Baoji Petroleum Steel Pipe Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02Processes 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
    • B23K31/027Making tubes with soldering or welding

Abstract

The invention discloses a kind of manufacture method of titanium/steel layer shape composite welded pipe, the manufacture method of the present invention is using the compound special type groove design for just putting big trapezoidal shape groove and the small trapezoidal shape groove of inversion, welded using MAG, cold spraying and TIG welderings, respectively successively according to carbon steel layer, Cu sprayed coatings and V sprayed coatings, the sequencing in pure titanium or titanium alloy layer TIG depositions area is welded, and by Cu sprayed coatings, the control of V spray layer thickness, the melting welding solved between pure titanium or titanium alloy layer and carbon steel material connects problem, success obstructs Ti, Fe, diffusion between Cu is dissolved each other, avoid the generation of brittlement phase, reduce the volume ratio in solid solution and mixing solid solution area in weld seam to greatest extent, it ensure that the corrosion resistance of pure titanium or titanium alloy layer, in turn ensure that the Strengthening and Toughening requirement of basic unit's carbon steel;The present invention is applied to mechanical chemical industry, desalinization, vacuum evaporation, power plant desulfurization and Oil & Gas Storage field.

Description

A kind of manufacture method of titanium/steel layer shape composite welded pipe
Technical field:
The invention belongs to lamellar composite pipe welding technology field, and in particular to a kind of manufacture of titanium/steel layer shape composite welded pipe Method.
Background technology:
Etching problem seriously affects social development and human security, and corrosion is to cause petroleum and petrochemical industry equipment to lose One of effect, principal element of Frequent Accidents, China's oil-gas pipeline is every year because corrosion need to change pipeline 400km;Cause greatly Material loss and waste.
Titanium/steel layer shape composite welded pipe is widely used in mechanical chemical industry, desalinization, vacuum with excellent combination property The fields such as evaporation, power plant desulfurization and Oil & Gas Storage.But the welding of titanium/steel composite material still has problems.Because titanium has Compared with extensive chemical activity, pernicious gas (O, N and H) is easily absorbed in welding, is easily generated with element interactions such as Fe, C continuously distributed Intermetallic compound phase TiFe, TiFe2 and frangible TiC phases, influence Weld Performance.It is well known that due to titanium and the metallurgy of steel Immiscible property, welding of the direct melting welding for titanium/steel composite material is infeasible.Therefore, researchers use a variety of methods, Fruitful research has been carried out, has also achieved effective connection of titanium and steel or stainless steel.
The present invention is different from other composite pipes, especially in composite material, the design of special type groove, transition material and mode It is and original and different in terms of new welding technology.Titanium/steel layer shape composite welded pipe, mechanical performance (including tensile property, low-temperature impact are tough Property, DWTT performances, bead bend performance etc.) mainly contributed by outer layer carbon steel, and pure titanium or titanium alloy layer mainly play anticorrosive work With.The pipe-making method that current domestic multiple tube typically uses has spun casting, cold working diffusion annealing, Hydraulic expansion, blast multiple Close, spread it is compound etc..
The Chinese invention patent that the publication No. of announcement on October 16th, 2013 is the A of CN 103350124, patent name one The manufacture method of the vertical masonry joint bimetallic composite welded pipe of kind transfer oil natural gas, the manufacture method are:It is corrosion resistant alloy by cladding Layer and basic unit are that the ply-metal that carbon steel is combined together in a manner of " blast+hot rolling " is shaped to by JCOE moulding process Vertical masonry joint tubulose, the vertical masonry joint bimetallic composite welded pipe of cladding in interior basic unit outside is made in straight seam welding finally by welding procedure; The ply-metal that " blast+hot rolling " mode is combined together, realizes the metallurgical binding of laminated composite plate, and the present invention is mainly For the manufacture of pure titanium or titanium alloy/carbon steel stratiform composite welded pipe, due to titanium or titanium alloy ripple relatively more living, in welding process Ti with Cu, Fe easily dissolve each other, and produce brittle phase, and the cut design and welding procedure in above-mentioned manufacture method are not suitable for pure titanium or titanium and closed The manufacture of gold/carbon steel stratiform composite welded pipe.
The content of the invention:
In order to overcome above-mentioned technical problem, it is an object of the invention to provide a kind of manufacturer of titanium/steel layer shape composite welded pipe Method, manufacture method of the invention reduce intermediate solid solution and mix the volume ratio in solid solution area, weld seam is protected to greatest extent There is the deposition amount of pure titanium or titanium alloy welding material, successfully avoid the generation of the brittle phase of interlayer, realize titanium/steel layer shape Combined Welding The reliable welding of pipe, and ensure that the welding quality and comprehensive mechanical property of weld seam.
In order to solve the above-mentioned technical problem, the technical scheme taken of the present invention is:A kind of system of titanium/steel layer shape composite welded pipe Make method, including the step of be:
Step 1:Pure titanium or titanium alloy layer and carbon steel layer are prepared into the composite plate of layer structure by blast+hot rolling mode Material, carbon steel layer and pure titanium or titanium alloy layer are metallurgical binding between the two, and the thickness of pure titanium or titanium alloy layer is 1~4mm;
Step 2:Small trapezoidal shape groove is is inverted in pure titanium or titanium alloy layer side, and its cut angle is 60~70 °, long side For 5~7mm, depth is 4~5mm;Big trapezoidal shape groove is just is put in carbon steel layer side, and its groove angle is 60~80 °, long side For 16~22mm, depth is 11~20mm;It is inverted small trapezoidal shape groove and just puts big trapezoidal shape groove and is intersected in carbon steel layer Side, and the transition face that crosses is plane or arc surfaced;
Step 3:After retaining wall on slope is complete, tubulose is pressed into using JCO multi-pass is progressive, pure titanium or titanium alloy layer are in pipe Side, carbon steel layer is on the outside of pipe;Then the small heat input of multilayer multi-pass is carried out to groove outside carbon steel layer using MAG welderings to weld, is formed Indifferent gas is carried out in carbon steel layer deposition area, the pure titanium in the welding process back side or titanium alloy layer groove and neighbouring 10~20mm width ranges Body is protected;
Step 4:Carbon steel layer side is air-cooled to room temperature after completing welding, and pure titanium or titanium alloy layer groove are carried out inside Welded Pipe Back chipping processing, it is plane or arc surfaced to make groove bottom, and groove is polished and entirely cleaned with acetone and ethanol And rapid drying;
Step 5:Inside welded tube after pure titanium or titanium alloy layer side groove cleaning drying, the cold sprays of SCM of pure Cu powder are carried out Welding is applied, Cu powder particle sizes distribution is 10~50 μm, and Cu spray layer thickness engages with pure titanium or titanium alloy/carbon steel blast Face is concordant or beyond 0~0.5mm, and lower floor's carbon steel is completely covered;After the completion of the spraying welding of Cu layers, to titanium mother metal surface in groove Cu processing is carried out, then the spraying welding of high-purity V powder is carried out using SCM cold spray techniques, V powder particle size distributions are 5~45 μm, V spray layer thickness is 0~0.5mm, and is completely covered by Cu transition zones, it is impossible to penetrates Cu sprayed coatings and carbon steel Meet;After completing the welding of V transition zones, to being cleared up in groove, then using TIG welding technologies to pure titanium or titanium alloy layer outside Portion's groove is filled cover welding, forms pure titanium or titanium alloy layer TIG depositions area, and welding is unable to penetration V sprayed coatings and sprayed with Cu Coating dissolves each other, and whole welding process in weld metal zone and near zone 10~20mm wide scopes using inert gas to carrying out Protection.
Above-mentioned pure titanium or titanium alloy layer thickness are 1~4mm.
Above-mentioned pure titanium or titanium alloy be TA1, TA2, TA3, TA4, TA5, TA6, TA7, TA8, TA8-1, TA9, TA9-1, TA10, TA11, TA15, TA17, TA18, TC1, TC2, TC3, TC4 or TC4ELI.
Above-mentioned carbon steel is Q235, Q345, X52, X60, X65, X70, X80, X90 or X100 carbon structural steels, pressure vessel Steel and high-strength and high ductility pipe line steel.
Beneficial effects of the present invention:
The present invention is set by using the compound special type groove for just putting big trapezoidal shape groove and the small trapezoidal shape groove of inversion Meter, welded using MAG, SCM cold sprayings and TIG weldering, successively according to carbon steel layer, Cu sprayed coatings and V sprayed coatings, pure titanium or titanium alloy layer The sequencing in deposition area is welded, and by the control to Cu sprayed coatings, V spray layer thickness, makes titanium/steel layer shape Combined Welding The deposition area metal and transition region metal fusion welding quality of connection of pipe are reliable, prevent dissolving each other for Fe, Ti, Cu, it is brittle to avoid interlayer The generation of phase, the reliable welding of titanium/steel layer shape composite welded pipe is realized, ensure that the good welding quality of weld seam and comprehensive mechanics Performance.
Brief description of the drawings:
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is titanium/steel layer shape composite welded pipe weld seam midplane shape transition interface structural representation.
Fig. 2 is Fig. 1 midplane shape transition interface partial enlargement structural representations.
Fig. 3 is titanium/steel layer shape composite welded pipe weld seam arc surfaced transition interface structural representation.
Fig. 4 is Fig. 3 arc surfaced transition interface partial enlargement structural representations.
Description of reference numerals:1 is carbon steel layer;2 be pure titanium or titanium alloy layer;3 be pure titanium or titanium alloy layer deposited metal area; 4 be V sprayed coatings;5 be Cu sprayed coatings;6 be carbon steel layer deposited metal area.
Embodiment:
Referring to Fig. 1,2 using the compound titanium of blast+hot rolling technology/steel layer shape composite board as experimental raw sheet material, to sheet material Carry out removing surface and remove lump, welding characteristic retaining wall on slope is carried out according to groove design form in Fig. 2,4 to sheet material both sides, so Tubulose is processed into using JCO molding modes afterwards, then using the melting welding for recommending welding material and technique progress multiple tube in the present invention Connection.
Pure titanium or titanium alloy layer side groove depth and width are respectively 4~6mm and 5~7mm and groove bottom and carbon steel Two kinds of plane or arc surfaced (respectively as shown in Figure 2,3), carbon steel layer side groove width and angle is in the interface that crosses of layer side Degree is respectively 13~20mm and 60~80 °, and after JCO shapings joint close to be done, first MAG welding is carried out from carbon steel side to longitudinal joint, Use H08Mn2SiAWelding wire;It is pure titanium or titanium alloy layer from steel pipe inner side after the welding of carbon steel side is fully completed Side carries out groove back chipping and purifying processing, then carries out pure Cu sprayed coatings surfacing, Cu sprayed coatings to be done using CSM technologies Surfacing followed by carries out pure V sprayed coatings surfacing, finally carries out the TIG filling cosmetic weldings of pure titanium or titanium alloy layer, uses industrially pure titanium (Chun Du≤99.999%) TA1 welding wires or titanium alloy welding wireWelding condition is as shown in table 1 below, 2,3, pipe Body and Weld Performance are as shown in table 4:
The X65 pipeline steel layer side soldering test parameter of table 1
The pure titanium TA1 soldering test parameter of table 2
Table 3 pure Cu, V spray parameters
The pure titanium or titanium alloy layer of table 4/carbon steel layer metallurgical binding stratiform composite welded pipe body and Weld Performance test result
The present invention is suitable for heavy caliber (diameter >=508mm), the pure titanium or titanium alloy/carbon steel of thin cladding (thickness≤4mm) The engineering of lamellar composite welded tube, mass production, there is very high practical value.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert The embodiment of the present invention is only limitted to this, for general technical staff of the technical field of the invention, is not taking off On the premise of from present inventive concept, some simple deduction, replacement or conversion for making etc. should all be considered as belonging to the present invention and be carried Claims of friendship determine scope of patent protection.

Claims (1)

1. a kind of manufacture method of titanium/steel layer shape composite welded pipe, including pure titanium or titanium alloy layer and carbon steel layer are passed through into blast+heat The mode of rolling is prepared into the composite board of layer structure, it is characterised in that:The manufacture method is further comprising the steps of:
Step 1:The composite board carries out retaining wall on slope after the completion of preparing, pure titanium or titanium alloy layer (2) side is the small ladder of inversion Shape shape groove, its groove angle are 60~70 °, and long side is 5~7mm, and depth is 4~5mm;Carbon steel layer (1) side is just to put Big trapezoidal shape groove, its groove angle is 60~80 °, and long side is 16~22mm, and depth is 11~20mm;It is inverted small trapezoidal shape Shape groove and just put big trapezoidal shape groove and be intersected in carbon steel layer (1) side, and the transition face that crosses is plane or arc surfaced;
Step 2:After retaining wall on slope is complete, tubulose is pressed into using JCO multi-pass is progressive, pure titanium or titanium alloy layer (2) on the inside of pipe, Carbon steel layer is on the outside of pipe;Then the small heat input of multilayer multi-pass is carried out to the outer groove of carbon steel layer (1) using MAG welderings to weld, is formed Carried out in carbon steel layer deposition area (6), the pure titanium in the welding process back side or titanium alloy layer (2) groove and neighbouring 10~20mm width ranges Inert gas shielding;
Step 3:Carbon steel layer (1) side is air-cooled to room temperature after completing welding, and pure titanium or titanium alloy layer (2) groove enter inside Welded Pipe The processing of row back chipping, it is plane or arc surfaced to make groove bottom, and groove is polished and carried out with acetone and ethanol whole clear Wash and dry up rapidly;
Step 4:Inside welded tube after pure titanium or titanium alloy layer (2) side groove cleaning drying, the SCM cold sprayings of pure Cu powder are carried out Welding, Cu powder particle sizes distribution are 10~50 μm, and Cu sprayed coatings (5) thickness connects with pure titanium or titanium alloy/carbon steel blast Conjunction face is concordant, and lower floor's carbon steel is completely covered;After the completion of Cu sprayed coatings (5) welding, Cu is carried out to titanium mother metal surface in groove Processing, then welded using the spraying of the high-purity V powder of SCM cold spray techniques progress, V powder particle sizes distribution is 5~45 μm, V sprayed coatings (4) thickness is 0~0.5mm, and is completely covered by Cu sprayed coatings (5), it is impossible to penetrates Cu sprayed coatings (5) and carbon Steel meets;After completing V sprayed coatings (4) welding, to being cleared up in groove, then pure titanium or titanium are closed using TIG welding technologies The outside groove of layer gold (2) is filled cover welding, forms pure titanium or titanium alloy layer deposition area (3), and welding is unable to penetration V sprayings Layer (4) dissolves each other with Cu sprayed coatings (5), whole welding process use inert gas to weld metal zone and near zone 10~ Protected in 20mm wide scopes;
Cu powder in the step 4 SCM cold sprayings welding technological parameter be:Accelerate 2.5~3.4MPa of gas pressure, send Powder 3.0~4.8MPa of gas pressure, 300~450 DEG C of gas heating-up temperature, 10~25mm of spray distance;The cold sprays of SCM of V powder Applying the technological parameter welded is:Accelerate 4.0~5.8MPa of gas pressure, powder feeding 4.5~6.4MPa of gas pressure, gas heating temperature 400~650 DEG C of degree, 15~20mm of spray distance;
The pure titanium or titanium alloy be TA1, TA2, TA3, TA4, TA5, TA6, TA7, TA8, TA8-1, TA9, TA9-1, TA10, TA11, TA15, TA17, TA18, TC1, TC2, TC3, TC4 or TC4ELI;The carbon steel be Q235, Q345, X52, X60, X65, X70, X80, X90 or X100;For H08Mn2SiA, gage of wire is the welding wire that step 2 medium carbon steel layer (1) welding uses 1.2mm;
The tensile strength of the titanium/steel layer shape composite welded pipe weld seam is 639MPa, 659MPa or 668MPa, the weld seam at -10 DEG C Impact flexibility is 126J, 155J or 139J.
CN201610363788.1A 2016-05-27 2016-05-27 A kind of manufacture method of titanium/steel layer shape composite welded pipe Active CN106001956B (en)

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CN106425104B (en) * 2016-12-05 2018-06-29 西南交通大学 A kind of titanium steel multiple tube single face welding and double face shaping welding method
CN110548777B (en) * 2018-05-31 2021-03-19 宝武特种冶金有限公司 Cold rolling pipe manufacturing method for bimetal composite seamless steel pipe
CN108890076A (en) * 2018-07-24 2018-11-27 中国石油天然气集团有限公司 A kind of boxing method of corrosion resistant alloy inner liner compound pipe

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CN104455761A (en) * 2014-11-21 2015-03-25 宝鸡石油钢管有限责任公司 Nickel-based alloy and carbon steel metallurgical bonding composite welded tube and manufacturing method thereof
CN104858536A (en) * 2015-06-05 2015-08-26 江苏德创制管有限公司 Method for producing large-diameter thick-wall longitudinal submerged arc welded pipe
CN105014207B (en) * 2015-07-08 2017-04-12 宝鸡石油钢管有限责任公司 Vanadium/copper solid solution transition connection-based welding process for titanium-containing metal layer/pipeline steel layer composite board

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Effective date of registration: 20181015

Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing

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Address before: 721008 10 Jiang Tan Road, Weibin District, Baoji, Shaanxi.

Patentee before: Baoji Petroleum Steel Pipe Co., Ltd.

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