CN201371310Y - Longitudinal-seam electrical resistance/induction welding forming component of large-bore metal pipe - Google Patents
Longitudinal-seam electrical resistance/induction welding forming component of large-bore metal pipe Download PDFInfo
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- CN201371310Y CN201371310Y CN200920104966U CN200920104966U CN201371310Y CN 201371310 Y CN201371310 Y CN 201371310Y CN 200920104966 U CN200920104966 U CN 200920104966U CN 200920104966 U CN200920104966 U CN 200920104966U CN 201371310 Y CN201371310 Y CN 201371310Y
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- induction welding
- electrical resistance
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Abstract
The utility model relates to a longitudinal-seam electrical resistance/induction welding forming component of a large-bore metal pipe, which consists of a delivery mechanism, a constraint, an impedor, screw-shaped milling cutters and an electrical resistance/induction welding machine; two rolls with arc-shaped surfaces at the middle parts thereof constitute the forming constraint, the interval between the two arc-shaped surfaces is equal to the diameter of a pipe billet; the rod type impedor is positioned at the center of the two rolls and the pipe billet and vertical to the rolls, conductive boots of positive electrode and negative electrode or inductors are positioned on two edge surfaces of an opening of the pipe billet, the conductive boots of the positive electrode and the negative electrode or the inductors are connected with the electrical resistance/induction welding machine, a pair of screw-shaped milling cutters are positioned on the outer surface and the inner surface of the pipe billet, the delivery mechanism is positioned in the corresponding position in front of the forming constraint; and the use of the device can realize that the large-bore longitudinal-seam electrical resistance welding steel pipe can be produced by one steel plate.
Description
Technical field
The utility model relates to a kind of resistance/induction welding molding assembly that is used for the heavy caliber metal tube.
Background technology
Adopting the mode of submerged-arc welding to make large-diameter steel pipe is a kind of common mode that present large-diameter steel pipe is produced, comprising the production of longitudinal submerged arc welded pipe: make raw material with steel plate, discontinuous shaping welded still pipe; Production with the spiral submerged arc welded steel pipe: make raw material with rolled steel plate, continous way shaping welded still pipe.For the production of this steel pipe, adopt different molding modes to process, the diameter of steel tube that it adapted to does not have the maximum upper limit restriction theoretically.
Resistance/induction welding manufacture is used in the continous way production of medium-small diameter steel pipe usually.At present the steel pipe maximum gauge of known resistance in the world/induction welding manufacturing is 660mm, for Japanese JFE company produces.Owing to be subjected to provide the restriction of raw material (rolled steel plate) width, the restriction of welder power, the former ability is not greatly developed yet, and resistance/induction welding manufacture only is used in the continous way production of medium-small diameter steel pipe at present.Recently along with the raising of resistance/induction welding welder power, the thickness that resistance/induction welding can the weldable steel iron material has reached 25.4mm.Corresponding is the welding that resistance/induction welding might be adapted to the big wall thickness metal tube of major diameter fully therewith.The submerged arc welding manufacture that is applicable to large-diameter steel pipe at present is a kind of welding manner of filling metal that has, weld seam and base metals exist chemical composition, mechanical property or the like aspect than big-difference.Use has in some cases caused certain restriction to it.Resistance/induction welding manufacture is a kind of pressure welding of filling metal of not having, though there is some difference for the material composition at welding melt run position and mother metal position, but its melt run is very narrow, heat treatment by subsequently can make the performance at melt run and mother metal position in full accord, realizes the seamless process of weld metal pipe.
The utility model content
The purpose of this utility model is a kind of mode of heating of resistance/induction, resistance/induction welding assembly of welding large-diameter steel pipe (having the electromagnetic property metal tube) of utilizing of design.Metallic plate is processed into cylindrical shape by different cold working modes such as UO, RB, JCO, the edges of boards to be welded of the cylinder that will crack utilize the mode of resistance/induction to be heated to edges of boards to dissolve subsequently, exert pressure simultaneously again and promptly be welded into metal tube, only can carry out also can putting in order the bulk heat treatmet of Zhi Gangguan to the metal tube that is welded at the local heat treatmet at weld seam position.
The resistance of heavy caliber metal tube described in the utility model/induction welding molding assembly is become with resistance/induction welding mechanism by delivery mechanism, constrainer, anti-resistance device, screw shaped milling cutter; Two roll formation moulding constrainer that the centre is an arcwall face, both arcwall face spacings equal pipe spare diameter; It is vertical with roll with pipe spare center that the anti-resistance of rod formula device is positioned at two rolls; Positive and negative electrode conduction boots or inductor are positioned on the surface, pipe spare opening two edges, and positive and negative electrode conduction boots or inductor are connected with resistance/induction welding machine; A pair of screw shaped milling cutter is positioned at outside the pipe spare, inner surface; Delivery mechanism is positioned at the preceding corresponding position of moulding constrainer.
When carrying out the metal tube welding, moulding constrainer and welding machine positive and negative electrode conduction boots or position of inductor are fixed; When making the cylinder that cracks conduct electricity boots or inductor by moulding constrainer and welding machine positive and negative electrode by delivery mechanism, the edges of boards position that will crack to be welded is heated to fusing, pressurization is that seam forms metal tube again.
Overlap/the burr that forms when welding still is at overlap/burr under the soft attitude of high temperature, and screw shaped milling cutter outer by being arranged in, inner surface is directly removed overlap.
This assembly uses the inductor that only metal tube V-shaped part part to be welded is heated, and makes full use of the kelvin effect of high frequency electric, position to be welded is effectively heated, and thermal efficiency height, metal position to be welded is easy to the through welding of metal tube in the thickness direction homogeneous heating.
The discontinuous production for 12m, 18m or length is produced in the welding of steel pipe.
The invention effect
The raw material that the resistance of heavy caliber metal tube/the induction welding manufacturing is used are metallic plate, and the width of metallic plate can rollingly get broad (comparing hot-rolled coil), can satisfy the production needs of heavy caliber metal tube; Even the width of metallic plate can not do very wide, can be along the length direction moulding of metallic plate, and make the resistance/induction welding manufacturing of heavy caliber metal tube can not be subjected to raw-material restriction.
The employing metallic plate is that the resistance/induction welding manufacture of the heavy caliber metal tube of raw material is that the intermittent type welding is made.The moulding of steel pipe divided to come with welding carry out, help the control respectively of moulding and welding, also help the layout of workshop.
The resistance of metal tube/induction welding manufacture is a kind of pressure welding of filling metal of not having, though there is some difference for the material composition at welding melt run position and mother metal position, but its melt run is very narrow, heat treatment by subsequently can make the performance at melt run and mother metal position in full accord, realize the seamless process of weld metal pipe, improve the quality of weld metal pipe.The welding production efficiency height of this welding manner in addition, this welding manner does not use flux material simultaneously, has improved the environmental condition of welding.
Can weld the diameter dimension scope of producing metal tube and can break through 660mm, can reach 1400mm even bigger.
Description of drawings
Fig. 1 high-frequency resistance welding (HFRW)
Fig. 2 high frequency induction welding
Wherein: 1, pipe spare 2, positive electrode conduction boots 3, negative electrode conduction boots 4, anti-resistance device 5, roll 6, inductor 7, screw rod milling cutter
The specific embodiment
With reference to the accompanying drawings the vertical masonry joint resistance/induction welding molding assembly of heavy caliber metal tube described in the utility model is formed below and explained.
The resistance of heavy caliber metal tube described in the utility model/induction welding assembly is become with resistance/induction welding mechanism by delivery mechanism, constrainer, anti-resistance device, screw shaped milling cutter; Two roll 5 formation moulding constrainer that the centre is an arcwall face, both arcwall face spacings equal pipe spare 1 diameter; It is vertical with roll with pipe spare center that the anti-resistance of rod formula device 4 is positioned at two rolls, positive and negative electrode conduction boots 2,3 or inductor 6 are positioned on the surface, pipe spare opening two edges, be connected with resistance/induction welding machine by positive and negative electrode conduction boots or inductor, a pair of screw shaped milling cutter 7 is positioned at outside the pipe spare, inner surface, and delivery mechanism is positioned at the preceding corresponding position of moulding constrainer.
Claims (1)
1. the vertical masonry joint of heavy caliber metal tube resistance/induction welding molding assembly is characterized in that: become with resistance/induction welding mechanism by delivery mechanism, constrainer, anti-resistance device, screw shaped milling cutter; Two roll formation moulding constrainer that the centre is an arcwall face, both arcwall face spacings equal pipe spare diameter; It is vertical with roll with pipe spare center that the anti-resistance of rod formula device is positioned at two rolls, positive and negative electrode conduction boots or inductor are positioned on the outer surface of pipe spare opening two edges, positive and negative electrode conduction boots or inductor are connected with resistance/induction welding machine, a pair of screw shaped milling cutter is positioned at outside the pipe spare, inner surface, and delivery mechanism is positioned at the preceding corresponding position of moulding constrainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920104966U CN201371310Y (en) | 2009-01-09 | 2009-01-09 | Longitudinal-seam electrical resistance/induction welding forming component of large-bore metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920104966U CN201371310Y (en) | 2009-01-09 | 2009-01-09 | Longitudinal-seam electrical resistance/induction welding forming component of large-bore metal pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201371310Y true CN201371310Y (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920104966U Expired - Lifetime CN201371310Y (en) | 2009-01-09 | 2009-01-09 | Longitudinal-seam electrical resistance/induction welding forming component of large-bore metal pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201371310Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110653470A (en) * | 2019-09-21 | 2020-01-07 | 冯家富 | Welding equipment for solar vacuum tube connecting frame |
-
2009
- 2009-01-09 CN CN200920104966U patent/CN201371310Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110653470A (en) * | 2019-09-21 | 2020-01-07 | 冯家富 | Welding equipment for solar vacuum tube connecting frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091230 |
|
| CX01 | Expiry of patent term |