CN203875461U - Bi-metal metallurgical composite pipe obtained through four welding processes - Google Patents
Bi-metal metallurgical composite pipe obtained through four welding processes Download PDFInfo
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- CN203875461U CN203875461U CN201420272329.9U CN201420272329U CN203875461U CN 203875461 U CN203875461 U CN 203875461U CN 201420272329 U CN201420272329 U CN 201420272329U CN 203875461 U CN203875461 U CN 203875461U
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Abstract
The utility model provides a bi-metal metallurgical composite pipe obtained through four welding processes. The composite pipe comprises alloy layers, carbon steel layers and a weld joint. A V-shaped groove is milled between the alloy layers and the carbon steel layers, wherein the alloy layers and the carbon steel layers are arranged on the two sides of the weld joint. X-shaped grooves are milled in the carbon steel layers, prewelding is firstly adopted in center welding of the X-shaped grooves of the carbon steel layers, an inner welding layer is welded to the inner sides of the X-shaped grooves, and an outer welding layer is welded to the outer sides of the X-shaped grooves. The inner welding layer is close to one side of the interior of the bi-metal metallurgical composite pipe, and an alloy layer seal welding layer is welded between the alloy layers on the two sides of the weld joint. The alloy layer seal welding layer seals the V-shaped groove and is combined with the portion between the inner welding layer and the carbon steel layers on the two sides of the weld joint in a metallurgical mode. The weld joint of the metallurgical composite pipe can be obtained through the four welding processes, transition welding between the carbon steel layers and the alloy layers is not needed, and therefore adverse factors caused by transition welding are avoided.
Description
Technical field
The present invention relates to and conveyance conduit technical field, especially relate to bimetal metallurgy multiple tube and process thereof that a kind of four roads have welded.
Background technology
Under environment harshness, carry while having high-corrosion medium or high concentration corrosive medium under arms, adopt general carbon steel can not meet design period requirement, and adopt the pure materials such as stainless steel, nickel-base alloy or dual phase steel, expense and cost are very expensive.So, for carrying high-corrosion medium, adopt composite bimetal pipe can meet pipeline corrosion resistance, high life and low cost.Composite bimetal pipe mainly comprises mechanical type multiple tube and metallurgy type multiple tube.The bimetal metallurgy multiple tube that this patent has welded mainly for a kind of employing four roads.
Summary of the invention
The object of the invention is to design bimetal metallurgy multiple tube and the process thereof that a kind of novel Si road has welded, address the above problem.
To achieve these goals, the technical solution used in the present invention is as follows:
The bimetal metallurgy multiple tube that a kind of four roads have welded, comprise alloy-layer, carbon steel layer and weld seam, between the described alloy-layer of described weld seam both sides and described carbon steel layer, milling has double V-groove, the milling of described carbon steel layer has X-type groove, the center of described X-type groove is welded with inner pre-layer, the inner side of described X-type groove is welded with interior layer, and the outside of described X-type groove is welded with outer layer;
In the side of described interior layer near described bimetal metallurgy multiple tube inside, and between the described alloy-layer of described weld seam both sides, be welded with alloy-layer soldering and sealing layer; Described alloy-layer soldering and sealing layer seals described double V-groove, and and described interior layer and the described carbon steel layer of described weld seam both sides between metallurgical binding.
The center of described X-type groove is welded with the pre-layer in described inside that adopts the continuously automatic prewelding of gas metal-arc welding the cooling formation of process nature, the inner side of described X-type groove is welded with the described interior layer of the multi-wire submerged-arc automatic welding method formation that adopts 2-5, and the outside of described X-type groove is also welded with the outer layer of the multi-wire submerged-arc automatic welding method formation that adopts 2-5;
In the side of described interior layer near described bimetal metallurgy multiple tube inside, and between the described alloy-layer of described weld line both sides, be welded with the described alloy-layer soldering and sealing layer that adopts electroslag welding method to form.
Two angle of heel scopes of described alloy-layer double V-groove are 15 °-35 °; A/F scope is 25mm-40mm;
Two angle of heel scopes of described X-type groove are 20 °-35 °; The opened gap width range of both sides is 0mm-1mm; Root face width range 0.5mm-2.5mm;
The weld width scope 1mm-5mm of the pre-layer in described inside;
The weld width scope of described interior layer is 15mm-25mm;
The weld width scope of described outer layer is 15mm-25mm;
Described carbon steel layer thickness scope is 5mm-30mm;
Described alloy layer thickness scope is 0.5mm-5mm.
A process for the bimetal metallurgy multiple tube that four roads have welded, comprises that step is as follows:
The first step, for the manufacture of the metallurgical composite plate of described bimetal metallurgy multiple tube, along steel plate length direction at the every side milling X-type-double V-groove of edges of boards, every side milling one side double V-groove on alloy-layer length direction, and guarantee that alloying metal removes clean; Every side milling one side milling X-type groove on carbon steel layer length direction;
Second step, rolls into drum joint close;
The 3rd step, prewelding, adopts gas metal-arc welding to carry out continuously prewelding automatically to the commissural center of X-type, and naturally cooling;
The 4th step, interior weldering, from the inner surface of described bimetal metallurgy multiple tube, adopts the multi-wire submerged-arc automatic welding method of 2 to 5 to complete inside weld welding;
The 5th step, outside weld, from the outer surface of described bimetal metallurgy multiple tube, adopts the multi-wire submerged-arc automatic welding method of 2 to 5 to complete outside weld welding;
The 6th step, soldering and sealing, the inner surface from described bimetal metallurgy multiple tube, stretches into welding gun, adopts electroslag welding method to complete alloy-layer weld seam seal welding, realize inner surface alloy-layer and be connected, and with carbon steel pipe inside weld metallurgical binding.
Also comprise the 7th step, through full body machinery expanding, internal layer Passivation Treatment, and the nondestructive testing of corresponding product code requirement and appearance test operation, be generated as the bimetal metallurgy multiple tube that four road Weldings are manufactured.
In second step, before rolling into drum joint close, first pass through JCO technique, or UO technique, or three-roll formation tube-making process reel forming.
JCO technique, UO technique, for a kind of moulding pipe rolling technique of pictograph, all understands in industry.
Metallurgy type ply-metal, be that carbon steel is the same alloy-layer of matrix steel plate (realizing bearing function) (realizing corrosion-resistant function) by certain technique (mechanical hot rolling or the technique such as compound of exploding), between bimetallic interface, form metallurgy type combination.Adopt carbon steel wlding and alloy coupling wlding, by four road welding procedures, realize carbon steel and connect carbon steel, alloy connects alloy, without transition between carbon steel and alloy, thereby raises the efficiency, and saves material, guarantees weldquality, and welding forms bimetal metallurgy multiple tube.
This patent product, stable and reliable product quality, has certain market and technical advantage.Easy, the easy row of welding procedure, efficient, province's material, carry out respectively carbon steel welding and alloy welding, 4 road welding sequences can complete metallurgical multiple tube weld seam, without increasing transition weldering between carbon steel and alloy-layer, thereby the unfavorable factor of avoiding excessive welding, as increased degradation under operation, transition welding heat zone of influence coarse grains, welding seam toughness; And mainly wlding only needs 2 kinds, the banded welding material of carbon steel wlding and alloy, without transition wlding, can save wlding and weld time, improves and produces and tubulation efficiency.
This patent discloses the bimetal metallurgy composite pipe production method that a kind of employing four road welding sequences complete.By metallurgical bimetal composite plate, through the milling of alloy-layer groove, the milling of substrate carbon steel groove, after moulding (JCOE or UO or three roller methods) operation, then pass through base tube carbon steel pipe prewelding, weldering in base tube carbon steel pipe, the outside weld of base tube carbon steel pipe, internal layer soldering and sealing Deng Si road welding sequence, last full body machinery expanding, internal layer Passivation Treatment, check, manufacture and form metallurgical composite bimetal pipe.
Beneficial effect of the present invention can be summarized as follows:
This patent product, stable and reliable product quality, has certain market and technical advantage.Easy, the easy row of welding procedure, efficient, province's material, carry out respectively carbon steel welding and alloy welding, 4 road welding sequences can complete metallurgical multiple tube weld seam, without increasing transition weldering between carbon steel and alloy-layer, thereby the unfavorable factor of avoiding excessive welding, as increased degradation under operation, transition welding heat zone of influence coarse grains, welding seam toughness; And mainly wlding only needs 2 kinds, the banded welding material of carbon steel wlding and alloy, without transition wlding, can save wlding and weld time, improves and produces and tubulation efficiency.
Accompanying drawing explanation
Fig. 1 is the monolateral groove schematic diagram of metallurgy type ply-metal (longitudinal seam);
Fig. 2 is bimetal metallurgy multiple tube (longitudinal seam) groove schematic diagram;
Fig. 3 is bimetal metallurgy multiple tube (longitudinal seam) first welding (prewelding) postwelding schematic diagram;
Fig. 4 is bimetal metallurgy multiple tube (longitudinal seam) second welding (interior weldering) postwelding schematic diagram;
Fig. 5 is bimetal metallurgy multiple tube (longitudinal seam) San road welding (outside weld) postwelding schematic diagram;
Fig. 6 is bimetal metallurgy multiple tube (longitudinal seam) Si road welding (alloy-layer soldering and sealing) postwelding schematic diagram.
The specific embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The bimetal metallurgy multiple tube that a kind of four roads have as shown in Figures 1 to 6 welded, comprise alloy-layer 2, carbon steel layer 1 and weld seam 3, between the described alloy-layer 2 of described weld seam 3 both sides and described carbon steel layer 1, milling has double V-groove, described carbon steel layer 1 milling has X-type groove, the center of described X-type groove is welded with inner pre-layer 4, the inner side of described X-type groove is welded with interior layer 5, and the outside of described X-type groove is welded with outer layer 6; In the side of described interior layer 5 near described bimetal metallurgy multiple tube inside, and between the described alloy-layer 2 of described weld seam 3 both sides, be welded with alloy-layer soldering and sealing layer 7; The described double V-groove of described alloy-layer soldering and sealing layer 7 sealing, and and described interior layer 5 and the described carbon steel layer 1 of described weld seam 3 both sides between metallurgical binding.
In the embodiment being more preferably, the center of described X-type groove is welded with the pre-layer 4 in described inside that adopts the continuously automatic prewelding of gas metal-arc welding the cooling formation of process nature, the inner side of described X-type groove is welded with the described interior layer 5 of the multi-wire submerged-arc automatic welding method formation that adopts 2-5, and the outside of described X-type groove is also welded with the outer layer 6 of the multi-wire submerged-arc automatic welding method formation that adopts 2-5; In the side of described interior layer 5 near described bimetal metallurgy multiple tube inside, and between the described alloy-layer 2 of described weld seam 3 line both sides, be welded with the described alloy-layer soldering and sealing layer 7 that adopts electroslag welding method to form.
In the embodiment being more preferably, two angle of heel scopes of described alloy-layer 2V type groove are 15 °-35 °; A/F scope is 25mm-40mm; Two angle of heel scopes of described X-type groove are 20 °-35 °; The opened gap width range of both sides is 0mm-1mm; Root face width range 0.5mm-2.5mm; The weld seam 3 width range 1mm-5mm of the pre-layer 4 in described inside; Weld seam 3 width ranges of described interior layer 5 are 15mm-25mm; Weld seam 3 width ranges of described outer layer 6 are 15mm-25mm; Described carbon steel layer 1 thickness range is 5mm-30mm; Described alloy-layer 2 thickness ranges are 0.5mm-5mm.
A process for the bimetal metallurgy multiple tube that four roads have welded, comprises that step is as follows:
The first step, for the manufacture of the metallurgical composite plate of described bimetal metallurgy multiple tube, along steel plate length direction at the every side milling X-type-double V-groove of edges of boards, every side milling one side double V-groove on alloy-layer 2 length directions, and guarantee that alloying metal removes clean; Every side milling one side milling X-type groove on carbon steel layer 1 length direction;
Second step, rolls into drum joint close;
The 3rd step, prewelding, adopts gas metal-arc welding to carry out continuously prewelding automatically to the commissural center of X-type, and naturally cooling;
The 4th step, interior weldering, from the inner surface of described bimetal metallurgy multiple tube, adopts the multi-wire submerged-arc automatic welding method of 2 to 5 to complete inside weld 3 welding;
The 5th step, outside weld, from the outer surface of described bimetal metallurgy multiple tube, adopts the multi-wire submerged-arc automatic welding method of 2 to 5 to complete outside weld 3 welding;
The 6th step, soldering and sealing, the inner surface from described bimetal metallurgy multiple tube, stretches into welding gun, adopts electroslag welding method to complete alloy-layer 2 weld seam 3 seal weldings, realize inner surface alloy-layer 2 and be connected, and with carbon steel pipe inside weld 3 metallurgical binding.
In the embodiment being more preferably, the process of the bimetal metallurgy multiple tube that described four roads have welded also comprises the 7th step, through full body machinery expanding, internal layer Passivation Treatment, and the nondestructive testing of corresponding product code requirement and appearance test operation, be generated as the bimetal metallurgy multiple tube that four road Weldings are manufactured.
In the embodiment being more preferably, in second step, before rolling into drum joint close, first pass through JCO technique, or UO technique, or three-roll formation tube-making process reel forming.
Bimetal metallurgy multiple tube manufacturing process flow is: alloy-layer 2 groove millings, the milling of substrate carbon steel groove, moulding (JCOE or UO or three roller methods), base tube carbon steel pipe prewelding, weldering in base tube carbon steel pipe, the outside weld of base tube carbon steel pipe, internal layer soldering and sealing, full body machinery expanding, internal layer Passivation Treatment, check, sign.
Metallurgical composite plate first along steel plate length direction (steel pipe is longitudinal) at edges of boards milling X-type-double V-groove, milling double V-groove between alloy-layer 2 and carbon steel layer 1, guarantees that alloying metal removes totally, carbon steel layer 1 milling X-type groove, as shown in Figure 1.Through JCO technique, UO technique, or after the tube-making process moulding such as three-roll formation, roll into drum joint close, as shown in Figure 2; First welding, prewelding, adopts the continuously automatic prewelding of gas metal-arc welding, and naturally cooling, pre-postwelding is as shown in Figure 3; Second welding, interior weldering, from bimetal metallurgy multiple tube inner surface, adopts multifibres (2-5 silk) automatic submerged-arc welding method to complete inside weld 3 welding, and interior postwelding is as shown in Figure 4; The welding of San road, outside weld, from bimetal metallurgy multiple tube outer surface, adopts multifibres (2-5 silk) automatic submerged-arc welding method to complete outside weld 3 welding, and outer postwelding is as shown in Figure 5; The welding of Si road, soldering and sealing, from bimetal metallurgy multiple tube inner surface, stretch into welding gun, adopt electroslag welding (Electro Slag Welding, ESW) method to complete alloy-layer 2 weld seam 3 seal weldings, realize inner surface alloy-layer 2 and be connected, and be connected with carbon steel pipe inside weld 3 is metallurgical, as shown in Figure 6.Pass through subsequently full body machinery expanding, internal layer Passivation Treatment, and the operation such as the nondestructive testing of corresponding product code requirement and appearance test, be the bimetal metallurgy multiple tube that four road Weldings are manufactured.
More than by the detailed description of concrete and preferred embodiment the present invention; but those skilled in the art should be understood that; the present invention is not limited to the above embodiment; within the spirit and principles in the present invention all; any modification of doing, be equal to replacement etc., within protection scope of the present invention all should be included in.
Claims (3)
1. the bimetal metallurgy multiple tube that Yi Zhong tetra-roads have welded, it is characterized in that: comprise alloy-layer, carbon steel layer and weld seam, between the described alloy-layer of described weld seam both sides and described carbon steel layer, milling has double V-groove, the milling of described carbon steel layer has X-type groove, the center of described X-type groove is welded with inner pre-layer, the inner side of described X-type groove is welded with interior layer, and the outside of described X-type groove is welded with outer layer;
In the side of described interior layer near described bimetal metallurgy multiple tube inside, and between the described alloy-layer of described weld seam both sides, be welded with alloy-layer soldering and sealing layer; Described alloy-layer soldering and sealing layer seals described double V-groove, and and described interior layer and the described carbon steel layer of described weld seam both sides between metallurgical binding.
2. the bimetal metallurgy multiple tube that four roads according to claim 1 have welded, it is characterized in that: the center of described X-type groove is welded with the pre-layer in described inside that adopts the continuously automatic prewelding of gas metal-arc welding the cooling formation of process nature, the inner side of described X-type groove is welded with the described interior layer of the multi-wire submerged-arc automatic welding method formation that adopts 2-5, and the outside of described X-type groove is also welded with the outer layer of the multi-wire submerged-arc automatic welding method formation that adopts 2-5;
In the side of described interior layer near described bimetal metallurgy multiple tube inside, and between the described alloy-layer of described weld line both sides, be welded with the described alloy-layer soldering and sealing layer that adopts electroslag welding method to form.
3. the bimetal metallurgy multiple tube that four roads according to claim 1 have welded, is characterized in that:
Two angle of heel scopes of described alloy-layer double V-groove are 15 ° of-35 ゜; A/F scope is 25mm-40mm;
Two angle of heel scopes of described X-type groove are 20 ° of-35 ゜; The opened gap width range of both sides is 0mm-1mm; Root face width range 0.5mm-2.5mm;
The weld width scope 1mm-5mm of the pre-layer in described inside;
The weld width scope of described interior layer is 15mm-25mm;
The weld width scope of described outer layer is 15mm-25mm;
Described carbon steel layer thickness scope is 5mm-30mm;
Described alloy layer thickness scope is 0.5mm-5mm.
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| CN201420272329.9U CN203875461U (en) | 2014-05-26 | 2014-05-26 | Bi-metal metallurgical composite pipe obtained through four welding processes |
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| CN201420272329.9U CN203875461U (en) | 2014-05-26 | 2014-05-26 | Bi-metal metallurgical composite pipe obtained through four welding processes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978292A (en) * | 2014-05-26 | 2014-08-13 | 北京隆盛泰科石油管科技有限公司 | Duplex-metal metallurgical composite pipe finished through quadruple welding and process method thereof |
| 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 |
| CN106989216A (en) * | 2016-01-20 | 2017-07-28 | 浙江三花智能控制股份有限公司 | The processing method of pipe fitting body, pipe fitting and pipe fitting |
-
2014
- 2014-05-26 CN CN201420272329.9U patent/CN203875461U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978292A (en) * | 2014-05-26 | 2014-08-13 | 北京隆盛泰科石油管科技有限公司 | Duplex-metal metallurgical composite pipe finished through quadruple welding and process method thereof |
| CN103978292B (en) * | 2014-05-26 | 2016-09-28 | 北京隆盛泰科石油管科技有限公司 | Bimetal metallurgy multiple tube that four roads have welded and process thereof |
| 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 |
| CN106989216A (en) * | 2016-01-20 | 2017-07-28 | 浙江三花智能控制股份有限公司 | The processing method of pipe fitting body, pipe fitting and pipe fitting |
| US10907752B2 (en) | 2016-01-20 | 2021-02-02 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Pipe body, pipe and method of making pipe |
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Granted publication date: 20141015 Termination date: 20180526 |