CN103862243A - Method for manufacturing straight-line thermometal composite welded pipe - Google Patents
Method for manufacturing straight-line thermometal composite welded pipe Download PDFInfo
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- CN103862243A CN103862243A CN201410111834.XA CN201410111834A CN103862243A CN 103862243 A CN103862243 A CN 103862243A CN 201410111834 A CN201410111834 A CN 201410111834A CN 103862243 A CN103862243 A CN 103862243A
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- welding
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- hot rolling
- bimetallic
- welded pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/14—Making tubes from double flat material
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Abstract
Disclosed is a method for manufacturing a straight-line thermometal composite welded pipe. The method comprises the steps that a thermometal hot rolling composite board produced by the explosion or hot rolling process is taken as raw materials, longitudinal edge pre-bending and stamping are carried out on the materials, stamping is based on the three-point bending basic principle, forming is achieved according to the sequence of J shape -> C shape -> O shape, and the product is manufactured through welding. According to the method for manufacturing the straight-line thermometal composite welded pipe, the forming mode is adopted to manufacture the straight-line thermometal composite welded pipe. Therefore, the method is suitable for industrialized mass production. In addition, due to the fact that the welding line is the straight line, therefore, compared with the length of a spiral welding line, length of the straight welding line is reduced by at least 30 percent, few welding materials are consumed, machining time is short, and the probability that a quality problem happens to the welding line is relatively small. In addition, due to the fact that in the use process, the resistance of the straight line in the pipe on conveyed media is small, the conveying speed of the liquid can be improved. Foreign matter is not easily hung on or happens to the welding line, and therefore the corrosive medium deposition cannot happen.
Description
Technical field
The invention belongs to composite welded pipe manufacturing technology field, particularly relate to a kind of manufacture method of vertical masonry joint bimetallic composite welded pipe.
Technical background
In the industries such as oil, natural gas, chemical industry, owing to being rich in H in pipeline pumped (conveying) medium
2s, CO
2, the corrosive medium such as Cl ion, therefore in pipeline use procedure, these corrosive mediums can make pipeline occur serious homogeneous corrosion, spot corrosion, sulfide-stress cracking and hydrogen induced cracking (HIC), thereby cause inefficacy and the accident of conveyance conduit, therefore adopting corrosion-resistant dual metal clad tube is one of safe, the most economic selection, is the direction of corrosion-resistant conveying tubing development.
Conventional bimetallic composite welded pipe is using carbon steel sheet as base material at present, corrosion resistant plate is as plied timber, utilize " blast or hot rolling " technique to make bimetallic hot rolling composite plate by being positioned at the corrosion resistant plate of internal layer and being positioned at outer field carbon steel sheet, then bimetallic hot rolling composite plate is sent into helix tube molding machine group continuously and bend to gradually tubulose, afterwards the tubulose sheet material weld seam of moulding is carried out to continuous welding, form product finally by sizing, detection, post processing.The advantage of this bimetallic composite welded pipe be shear strength up to more than 210Mpa, can carry 400 ° of following high-temperature mediums, be spiral but shortcoming is its weld seam, thereby weld seam is long, therefore welding material consumption is many, long processing time, and weld seam occurs that the probability of quality problems is large.In addition, as mentioned above, because weld seam is spiral, therefore the spiral weld that is in use positioned at pipe can form larger resistance to the medium of carrying, thereby cause liquid transfer rate low, and commissure foreign matter easy to hang, result causes this place to occur corrosive medium deposition problems.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of manufacture method of vertical masonry joint bimetallic composite welded pipe.
In order to achieve the above object, the manufacture method of vertical masonry joint bimetallic composite welded pipe provided by the invention comprises the following step carrying out in order:
The manufacture method of vertical masonry joint bimetallic composite welded pipe provided by the invention comprises the following step carrying out in order:
1) using the bimetallic hot rolling composite plate as base material and corrosion resistant plate as plied timber by carbon steel sheet of utilizing blast or hot rolling technology to make according to required pipe diameter, the square sheet material of length scaling cut growth, and process respectively a bevel for welding in the top and bottom of sheet material both sides of the edge;
2) above-mentioned bimetallic hot rolling composite plate is passed through to longitudinal edge pre-bending, then pass through punching press, each step punching press is all take three-point bending as basic principle, by the sequential forming moulding of J-shaped → C shape → O shape;
3) adopt metal argon arc welding welding procedure to carry out the continuous prewelding of transition zone to the straight weld middle part of the bimetallic hot rolling composite plate both sides of the edge joint after above-mentioned brake forming;
4) adopt vertical masonry joint welding technique of submerged arc welding, outside pipe, carry out the continuous welding of carbon steel sheet;
5) adopt argon tungsten-arc welding process, carry out the continuous welding of corrosion resistant plate in pipe, Formation cross-section is the weld bond of X-shaped thus;
6) finally by forming product after sizing, detection, surface treatment.
Described corrosion resistant plate be corrosion resistant plate and 601 including 304, the austenitic stainless steel such as 316L, the nickel-base alloys such as 825 at interior steel plate, and thickness is 1.5mm～5mm; Carbon steel sheet is the steel plate including Q235B, Q245R, Q345B, L415, X65 etc., and thickness is 5～40mm.
After described bimetallic hot rolling composite plate brake forming, the angle d between the welding of carbon steel sheet both sides is domatic is 60-70 °, and leaves 1mm root face; Angle c between the welding of corrosion resistant plate both sides is domatic is 50-60 °.
The manufacture method of vertical masonry joint bimetallic composite welded pipe provided by the invention is to adopt molding mode to manufacture vertical masonry joint bimetallic composite welded pipe, is therefore applicable to industrialized mass production.In addition, because its weld seam is vertical masonry joint, therefore the relative spiral weld length of weld seam is reduced by least 30%, so welding material consumption is few, process time is short, and weld seam occurs that the probability of quality problems is relatively little.In addition, the resistance that the straight weld that is in use positioned at pipe forms pumped (conveying) medium is little, therefore can improve the transfer rate of liquid, and commissure foreign matter not easy to hang and occur the corrosive medium deposition problems causing thus.
Accompanying drawing explanation
Fig. 1 adopts in the manufacture method of vertical masonry joint bimetallic composite welded pipe provided by the invention to process the bimetallic hot rolling composite plate lateral cross section structural representation after bevel for welding.
Fig. 2 adopts the complete bimetallic hot rolling of pre-bending composite plate lateral cross section structural representation in the manufacture method of vertical masonry joint bimetallic composite welded pipe provided by the invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the manufacture method of vertical masonry joint bimetallic composite welded pipe provided by the invention is elaborated.
As shown in Figure 1 and Figure 2, the manufacture method of vertical masonry joint bimetallic composite welded pipe provided by the invention comprises the following step carrying out in order:
1) using the bimetallic hot rolling composite plate as base material and corrosion resistant plate 2 as plied timber by carbon steel sheet 1 of utilizing blast or hot rolling technology to make according to required pipe diameter, the square sheet material of length scaling cut growth, and process respectively a bevel for welding 3 in the top and bottom of sheet material both sides of the edge;
2) above-mentioned bimetallic hot rolling composite plate is passed through to longitudinal edge pre-bending, then pass through punching press, each step punching press is all take three-point bending as basic principle, by the sequential forming moulding of J-shaped → C shape → O shape;
3) adopt metal argon arc welding welding procedure to carry out the continuous prewelding of transition zone to the straight weld middle part of the bimetallic hot rolling composite plate both sides of the edge joint after above-mentioned brake forming;
4) adopt vertical masonry joint welding technique of submerged arc welding, outside pipe, carry out the continuous welding of carbon steel sheet 1;
5) adopt argon tungsten-arc welding process, carry out the continuous welding of corrosion resistant plate 2 in pipe, Formation cross-section is the weld bond of X-shaped thus;
6) finally by forming product after sizing, detection, surface treatment.
Described corrosion resistant plate 2 be corrosion resistant plate and 601 including 304,316L austenitic stainless steel, 825 nickel-base alloys at interior steel plate, and thickness is 1.5mm～5mm; Carbon steel sheet 1 is the steel plate including Q235B, Q245R, Q345B, L415, X65, and thickness is 5～40mm.
After described bimetallic hot rolling composite plate brake forming, the angle d between carbon steel sheet 1 both sides welding is domatic is 60-70 °, and leaves 1mm root face; Angle c between corrosion resistant plate 2 both sides welding are domatic is 50-60 °.
Claims (3)
1. a manufacture method for vertical masonry joint bimetallic composite welded pipe, is characterized in that: described manufacture method comprises the following step carrying out in order:
1) using the bimetallic hot rolling composite plate as base material and corrosion resistant plate (2) as plied timber by carbon steel sheet (1) of utilizing blast or hot rolling technology to make according to required pipe diameter, the square sheet material of length scaling cut growth, and process respectively a bevel for welding (3) in the top and bottom of sheet material both sides of the edge;
2) above-mentioned bimetallic hot rolling composite plate is passed through to longitudinal edge pre-bending, then pass through punching press, each step punching press is all take three-point bending as basic principle, by the sequential forming moulding of J-shaped → C shape → O shape;
3) adopt metal argon arc welding welding procedure to carry out the continuous prewelding of transition zone to the straight weld middle part of the bimetallic hot rolling composite plate both sides of the edge joint after above-mentioned brake forming;
4) adopt vertical masonry joint welding technique of submerged arc welding, outside pipe, carry out the continuous welding of carbon steel sheet (1);
5) adopt argon tungsten-arc welding process, carry out the continuous welding of corrosion resistant plate (2) in pipe, Formation cross-section is the weld bond of X-shaped thus;
6) finally by forming product after sizing, detection, surface treatment.
2. the manufacture method of vertical masonry joint bimetallic composite welded pipe according to claim 1, it is characterized in that: described corrosion resistant plate (2) be corrosion resistant plate and 601 including 304,316L austenitic stainless steel, 825 nickel-base alloys at interior steel plate, and thickness is 1.5mm～5mm; Carbon steel sheet (1) is the steel plate including Q235B, Q245R, Q345B, L415, X65, and thickness is 5～40mm.
3. the manufacture method of vertical masonry joint bimetallic composite welded pipe according to claim 1, is characterized in that: after described bimetallic hot rolling composite plate brake forming, the angle d between the welding of carbon steel sheet (1) both sides is domatic is 60-70 °, and leaves 1mm root face; Angle c between the welding of corrosion resistant plate (2) both sides is domatic is 50-60 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410111834.XA CN103862243A (en) | 2014-03-25 | 2014-03-25 | Method for manufacturing straight-line thermometal composite welded pipe |
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| CN201410111834.XA CN103862243A (en) | 2014-03-25 | 2014-03-25 | Method for manufacturing straight-line thermometal composite welded pipe |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090451A (en) * | 2016-06-03 | 2016-11-09 | 合肥紫金钢管股份有限公司 | A kind of high-wear-resistancehigh-strength high-strength longitudinal submerged arc welded pipe |
| CN106694609A (en) * | 2015-11-16 | 2017-05-24 | 宝鸡石油钢管有限责任公司 | Method for manufacturing X80-stage phi1422 mm longitudinal submerged arc welding pipe |
| CN106736278A (en) * | 2016-12-12 | 2017-05-31 | 邓惠芬 | The processing method for bending ignition tip |
| CN107143703A (en) * | 2017-05-27 | 2017-09-08 | 中国石油天然气集团公司 | The mechanical composite tube and its manufacture method of a kind of nickel-base alloy of liner 825 |
| CN108296305A (en) * | 2017-12-29 | 2018-07-20 | 浙江久立特材科技股份有限公司 | A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe |
| CN110682179A (en) * | 2019-10-31 | 2020-01-14 | 上海奉贤钢管厂有限公司 | Production method of composite steel pipe and water-carrying deburring machine used for method |
-
2014
- 2014-03-25 CN CN201410111834.XA patent/CN103862243A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694609A (en) * | 2015-11-16 | 2017-05-24 | 宝鸡石油钢管有限责任公司 | Method for manufacturing X80-stage phi1422 mm longitudinal submerged arc welding pipe |
| CN106090451A (en) * | 2016-06-03 | 2016-11-09 | 合肥紫金钢管股份有限公司 | A kind of high-wear-resistancehigh-strength high-strength longitudinal submerged arc welded pipe |
| CN106736278A (en) * | 2016-12-12 | 2017-05-31 | 邓惠芬 | The processing method for bending ignition tip |
| CN107143703A (en) * | 2017-05-27 | 2017-09-08 | 中国石油天然气集团公司 | The mechanical composite tube and its manufacture method of a kind of nickel-base alloy of liner 825 |
| CN108296305A (en) * | 2017-12-29 | 2018-07-20 | 浙江久立特材科技股份有限公司 | A kind of manufacturing method of heavy caliber thick wall composite bimetal pipe |
| CN110682179A (en) * | 2019-10-31 | 2020-01-14 | 上海奉贤钢管厂有限公司 | Production method of composite steel pipe and water-carrying deburring machine used for method |
| CN110682179B (en) * | 2019-10-31 | 2020-06-23 | 上海奉贤钢管厂有限公司 | Production method of composite steel pipe |
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Application publication date: 20140618 |