CN204062190U - A kind of dual-metal clad steel pipe - Google Patents
A kind of dual-metal clad steel pipe Download PDFInfo
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- CN204062190U CN204062190U CN201420520335.1U CN201420520335U CN204062190U CN 204062190 U CN204062190 U CN 204062190U CN 201420520335 U CN201420520335 U CN 201420520335U CN 204062190 U CN204062190 U CN 204062190U
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- steel pipe
- austenitic stainless
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- pipe
- metal clad
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Abstract
The utility model discloses a kind of dual-metal clad steel pipe, relate to metal rigidity Manifold technology field.Comprise Austenitic stainless steel pipe and carbon steel tubing, the junction plane between Austenitic stainless steel pipe and carbon steel tubing is provided with the nickel-base alloy binder course that built-up welding is lathed, interference fit.Between the internal and external layer metal of the utility model dual-metal clad steel pipe, heap is welded with nickel base alloy layer, make this dual-metal clad steel pipe combination force strong, productivity is high, stable components, quality is good, and the carbon of carbon steel can be prevented to be diffused in Austenitic Stainless Steel, effectively prevent the antiseptic property of Austenitic Stainless Steel impaired.
Description
Technical field
The utility model relates to metal rigidity Manifold technology field.
Background technique
Bimetal boiler tube is mainly used in recycle of alkali liquor boiler, and skin to need with the good Austenitic Stainless Steel of antiseptic property as 304, Tp310, and internal layer to need with the good carbon steel of heat-conducting property as 20,20G, T11.
In oil gas field surface gathering and transferring pipeline, pipe line steel is mainly anticorrosion based on internal layer, thus internal layer Austenitic Stainless Steel as 304, Tp310, skin carbon steel as 20,20G, T11.
Above-mentioned dual-metal clad steel pipe can greatly reduce the cost of material of corrosion-resisting austenite stainless steel tubing, but the carbon of carbon steel is easily diffused in stainless steel, makes stainless antiseptic property impaired.And the bushing making of simple machinery above-mentioned bimetal pipe carbon steel when hot charging is very easily oxidized, greatly affect adhesive strength, productivity is lower.
China Patent Publication No. CN203223649U, publication date on October 2nd, 2013, the name of patent is called composite pipe, and this model utility discloses a kind of composite pipe.This composite pipe comprises base tube and the corrosion resistant alloy bushing pipe of mechanical bond in base tube, the end inner circumferential of base tube is provided with corrosion resistant alloy overlay cladding, the interior edge face of corrosion resistant alloy overlay cladding connects with the end face of corrosion resistant alloy bushing pipe, and corrosion resistant alloy overlay cladding length is axially not less than the distance between the end face of corrosion resistant alloy bushing pipe and the end face of base tube.This model utility relate to corrosion resistant alloy overlay cladding, but its technical problem solved is that bimetallic mechanical composite tube welding difficulty is large, solder yield is low, slow-footed problem, and the two ends of this composite pipe are uneven with the performance in the middle part of it.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of dual-metal clad steel pipe, between the internal and external layer metal of this dual-metal clad steel pipe, heap is welded with nickel base alloy layer, make this dual-metal clad steel pipe combination force strong, productivity is high, stable components, quality is good, and the carbon of carbon steel can be prevented to be diffused in Austenitic Stainless Steel, effectively prevents the antiseptic property of Austenitic Stainless Steel impaired.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of dual-metal clad steel pipe, comprise Austenitic stainless steel pipe and carbon steel tubing, the junction plane between Austenitic stainless steel pipe and carbon steel tubing is provided with the nickel-base alloy binder course that built-up welding is lathed, interference fit.
The skin of dual-metal clad steel pipe is Austenitic stainless steel pipe, and internal layer is carbon steel tubing.
The skin of dual-metal clad steel pipe is carbon steel tubing, and internal layer is Austenitic stainless steel pipe.
Preferably, the material of Austenitic stainless steel pipe is 304 or TP310 Austenitic Stainless Steel, and the material of carbon steel tubing is 20,20G or T11 carbon steel.
Preferably, the junction plane of dual-metal clad steel pipe between Austenitic stainless steel pipe and carbon steel tubing is provided with the nickel-base alloy binder course that built-up welding is lathed, interference fit, and through reaming, heat treatment with extrudedly to make.
The adhesive strength of traditional Austenitic Stainless Steel and carbon steel dual-metal clad steel pipe is not enough, the utility model is at carbon steel surface overlaying nickel-base alloy, nickel-base alloy is the same with the structural state of Austenitic Stainless Steel, all there is austenite structure, make the adhesive strength of Austenitic Stainless Steel and carbon steel dual-metal clad steel pipe high; When carbon steel surface overlaying nickel base alloy layer effectively can prevent hot charging, carbon steel is oxidized in addition, and the carbon of carbon steel can be prevented to be diffused in Austenitic Stainless Steel, effectively prevent stainless antiseptic property impaired, also ensure that the stability of pipe composition.
The beneficial effect adopting technique scheme to produce is:
(1) between the internal and external layer metal of the utility model dual-metal clad steel pipe, heap is welded with nickel base alloy layer, make this dual-metal clad steel pipe combination force strong, productivity is high, stable components, quality is good, and the carbon of carbon steel can be prevented to be diffused in Austenitic Stainless Steel, effectively prevent the antiseptic property of Austenitic Stainless Steel impaired.
(2) performance of the utility model dual-metal clad steel pipe is even, can cut off use arbitrarily.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail;
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is another kind of structural representation of the present utility model;
In figure, 1, Austenitic stainless steel pipe; 2, nickel-base alloy binder course; 3, carbon steel tubing.
Embodiment
Embodiment 1
A kind of dual-metal clad steel pipe, its skin is Austenitic stainless steel pipe 1, and the material of Austenitic stainless steel pipe 1 is 304 Austenitic Stainless Steels; Internal layer is carbon steel tubing 3, and the material of carbon element steel layer 3 is 20G carbon steel, and the outer surface heap of carbon steel tubing 3 is welded with nickel-base alloy binder course 2, interference fit.
Manufacture the production method of this dual-metal clad steel pipe, comprise the following steps:
1) choose external pipe and internal layer bar: the material of external pipe is 304 Austenitic Stainless Steels, the material of internal layer bar is 20G carbon steel.If the external diameter of external pipe is a internal diameter is b, the external diameter of internal layer bar is c.
2) built-up welding and turnery processing nickel base alloy layer: the nickel-base alloy binder course being greater than 2mm at the outer surface built-up welding thickness of internal layer bar, and turnery processing is carried out to nickel-base alloy binder course, the thickness of the nickel-base alloy binder course after turnery processing is 2mm.Internal layer bar external diameter after processing is c+4mm.
3) interference fit machinery is bushing: after external pipe being heated to 200 DEG C-220 DEG C, to carry out interference fit machinery bushing with internal layer bar, magnitude of interference is 0.15mm, the closing line place at pipe two end part after bushing to interference fit machinery again carries out soldering and sealing, then vacuumize, last in the centre-drilling hole of internal layer solid pipe billet, the size in hole is 25mm, obtains composite pipe blank.Wherein c+4mm=b+0.15mm, 0.15mm are magnitude of interference.
4) reaming and High temperature diffusion heat treatment: above-mentioned composite pipe blank is heated to 1150 DEG C-1170 DEG C, ring rolling machine carries out reaming, reaming deformation ratio is 1.1, end to end and be put into after again vacuumizing in desk-top oven and carry out High temperature diffusion heat treatment, High temperature diffusion heat treatment temperature is 1080 DEG C-1100 DEG C in composite pipe blank repair welding after reaming.
5) extruded: after the composite pipe blank inner and outer surface reconditioning after High temperature diffusion heat treatment, extrusion press carries out heat extrusion compacting, cutting head cutting tail, obtains the dual-metal clad steel pipe with 304 Austenitic stainless steel pipes, nickel-base alloy binder course and 20G carbon steel tubing, can be used for boiler pipe.
Embodiment 2
A kind of dual-metal clad steel pipe, its skin is Austenitic stainless steel pipe 1, and the material of Austenitic stainless steel pipe 1 is TP310 Austenitic Stainless Steel; Internal layer is carbon steel tubing 3, and the material of carbon steel tubing 3 is T11 carbon steel, and the outer surface heap of carbon steel tubing 3 is welded with nickel-base alloy binder course 2, interference fit.
Manufacture the production method of this dual-metal clad steel pipe, comprise the following steps:
1) choose external pipe and inner tube: the material of external pipe is TP310 Austenitic Stainless Steel, the material of inner tube is T11 carbon steel.
2) built-up welding and turnery processing nickel base alloy layer: the nickel base alloy layer being greater than 2mm at the outer surface built-up welding thickness of inner tube, and turnery processing is carried out to nickel base alloy layer, the thickness of the nickel base alloy layer after turnery processing is 1mm.
3) interference fit machinery is bushing: after external pipe being heated to 280 DEG C-300 DEG C, to carry out interference fit machinery bushing with inner tube, and magnitude of interference is 0.17mm, more bushing to interference fit machinery after the closing line place at pipe two end part carry out soldering and sealing, then vacuumize, obtain composite pipe blank.
4) reaming and High temperature diffusion heat treatment: above-mentioned composite pipe blank is heated to 1130 DEG C-1150 DEG C, ring rolling machine carries out reaming, reaming deformation ratio is 1.1, end to end and be put into after again vacuumizing in desk-top oven and carry out High temperature diffusion heat treatment, High temperature diffusion heat treatment temperature is 1100 DEG C-1120 DEG C in composite pipe blank repair welding after reaming.
5) extruded: after the composite pipe blank inner and outer surface reconditioning after High temperature diffusion heat treatment, extrusion press carries out heat extrusion compacting, cutting head cutting tail, obtains the dual-metal clad steel pipe with TP310 Austenitic stainless steel pipe, nickel-base alloy binder course and T11 carbon steel tubing, can be used for boiler pipe.
Embodiment 3
A kind of dual-metal clad steel pipe, its skin is carbon steel tubing 3, and the material of carbon steel tubing 3 is T11 carbon steel; Internal layer is Austenitic stainless steel pipe 1, and the material of Austenitic stainless steel pipe 1 is TP310 Austenitic Stainless Steel, and the inside surfacing of carbon steel tubing 3 has nickel-base alloy binder course 2, interference fit.
Manufacture the production method of this dual-metal clad steel pipe, comprise the following steps:
1) choose external pipe and internal layer bar: the material of external pipe is T11 carbon steel, the material of internal layer bar is TP310 Austenitic Stainless Steel.
2) built-up welding and turnery processing nickel base alloy layer: the nickel-base alloy binder course being greater than 3mm at the inside surfacing thickness of external pipe, and turnery processing is carried out to nickel-base alloy binder course, the thickness of the nickel-base alloy binder course after turnery processing is 3mm.
3) interference fit machinery is bushing: after external pipe being heated to 240 DEG C-260 DEG C, to carry out interference fit machinery bushing with internal layer bar, magnitude of interference is 0.13mm, the closing line place at pipe two end part after bushing to interference fit machinery again carries out soldering and sealing, then vacuumize, last in the centre-drilling hole of internal layer solid pipe billet, the size in hole is 45mm, obtains composite pipe blank.
4) reaming and High temperature diffusion heat treatment: above-mentioned composite pipe blank is heated to 1140 DEG C-1160 DEG C, ring rolling machine carries out reaming, reaming deformation ratio is 1.1, end to end and be put into after again vacuumizing in desk-top oven and carry out High temperature diffusion heat treatment, High temperature diffusion heat treatment temperature is 1090 DEG C-1110 DEG C in composite pipe blank repair welding after reaming.
5) extruded: after the composite pipe blank inner and outer surface reconditioning after High temperature diffusion heat treatment, extrusion press carries out heat extrusion compacting, cutting head cutting tail, obtain the dual-metal clad steel pipe with T11 carbon steel tubing, nickel-base alloy binder course and TP310 Austenitic stainless steel pipe, can be used for oil gas field surface gathering and transferring pipeline aspect.
Embodiment 4
A kind of dual-metal clad steel pipe, its skin is carbon steel tubing 3, and the material of carbon steel tubing 3 is 20 carbon steel; Internal layer is Austenitic stainless steel pipe 1, and the material of Austenitic stainless steel pipe 1 is 304 Austenitic Stainless Steels, and the inside surfacing of carbon steel tubing 3 has nickel-base alloy binder course 2, interference fit.
Manufacture the production method of this dual-metal clad steel pipe, comprise the following steps:
1) choose external pipe and inner tube: the material of external pipe is 20 carbon steel, the material of inner tube is 304 Austenitic Stainless Steels.
2) built-up welding and turnery processing nickel base alloy layer: the nickel-base alloy binder course being greater than 2mm at the inside surfacing thickness of external pipe, and turnery processing is carried out to nickel-base alloy binder course, the thickness of the nickel-base alloy binder course after turnery processing is 2mm.
3) interference fit machinery is bushing: after external pipe being heated to 260 DEG C-280 DEG C, to carry out interference fit machinery bushing with inner tube, and magnitude of interference is 0.15mm, more bushing to interference fit machinery after the closing line place at pipe two end part carry out soldering and sealing, then vacuumize, obtain composite pipe blank.
4) reaming and High temperature diffusion heat treatment: above-mentioned composite pipe blank is heated to 1130 DEG C-1150 DEG C, ring rolling machine carries out reaming, reaming deformation ratio is 1.1, end to end and be put into after again vacuumizing in desk-top oven and carry out High temperature diffusion heat treatment, High temperature diffusion heat treatment temperature is 1100 DEG C-1120 DEG C in composite pipe blank repair welding after reaming.
5) extruded: after the composite pipe blank inner and outer surface reconditioning after High temperature diffusion heat treatment, extrusion press carries out heat extrusion compacting, cutting head cutting tail, obtain the dual-metal clad steel pipe with 20 carbon steel tubings, nickel-base alloy binder course and 304 Austenitic stainless steel pipes, can be used for oil gas field surface gathering and transferring pipeline aspect.
Embodiment 5
A kind of dual-metal clad steel pipe, its skin is Austenitic stainless steel pipe 1, and the material of Austenitic stainless steel pipe 1 is 304 Austenitic Stainless Steels; Internal layer is carbon steel tubing 3, and the material of carbon element steel layer 3 is T11 carbon steel, and the outer surface heap of carbon steel tubing 3 is welded with nickel-base alloy binder course 2, interference fit.
Manufacture the production method of this dual-metal clad steel pipe, comprise the following steps:
1) choose external pipe and internal layer bar: the material of external pipe is 304 Austenitic Stainless Steels, the material of internal layer bar is T11 carbon steel.
2) built-up welding and turnery processing nickel base alloy layer: the nickel-base alloy binder course being greater than 2mm at the outer surface built-up welding thickness of internal layer bar, and turnery processing is carried out to nickel-base alloy binder course, the thickness of the nickel-base alloy binder course after turnery processing is 2mm.
3) interference fit machinery is bushing: after external pipe being heated to 200 DEG C-300 DEG C, to carry out interference fit machinery bushing with internal layer bar, magnitude of interference is 0.15mm, the closing line place at pipe two end part after bushing to interference fit machinery again carries out soldering and sealing, then vacuumize, last in the centre-drilling hole of internal layer solid pipe billet, the size in hole is 35mm, obtains composite pipe blank.
4) reaming and High temperature diffusion heat treatment: above-mentioned composite pipe blank is heated to 1130 DEG C-1170 DEG C, ring rolling machine carries out reaming, reaming deformation ratio is 1.1, end to end and be put into after again vacuumizing in desk-top oven and carry out High temperature diffusion heat treatment, High temperature diffusion heat treatment temperature is 1080 DEG C-1120 DEG C in composite pipe blank repair welding after reaming.
5) extruded: after the composite pipe blank inner and outer surface reconditioning after High temperature diffusion heat treatment, extrusion press carries out heat extrusion compacting, cutting head cutting tail, obtains the dual-metal clad steel pipe with 304 Austenitic stainless steel pipes, nickel-base alloy binder course and T11 carbon steel tubing.
Embodiment 6
A kind of dual-metal clad steel pipe, its skin is Austenitic stainless steel pipe 1, and the material of Austenitic stainless steel pipe 1 is 316 Austenitic Stainless Steels; Internal layer is carbon steel tubing 3, and the material of carbon element steel layer 3 is 30 carbon steel, and the outer surface heap of carbon steel tubing 3 is welded with nickel-base alloy binder course 2, interference fit.
Manufacture the production method of this dual-metal clad steel pipe, comprise the following steps:
1) choose external pipe and internal layer bar: the material of external pipe is 316 Austenitic Stainless Steels, the material of internal layer bar is 30 carbon steel.
2) built-up welding and turnery processing nickel base alloy layer: the nickel-base alloy binder course being greater than 2mm at the outer surface built-up welding thickness of internal layer bar, and turnery processing is carried out to nickel-base alloy binder course, the thickness of the nickel-base alloy binder course after turnery processing is 2mm.
3) interference fit machinery is bushing: after external pipe being heated to 200 DEG C-300 DEG C, to carry out interference fit machinery bushing with internal layer bar, magnitude of interference is 0.15mm, the closing line place at pipe two end part after bushing to interference fit machinery again carries out soldering and sealing, then vacuumize, last in the centre-drilling hole of internal layer solid pipe billet, the size in hole is 35mm, obtains composite pipe blank.
4) reaming and High temperature diffusion heat treatment: above-mentioned composite pipe blank is heated to 1130 DEG C-1170 DEG C, ring rolling machine carries out reaming, reaming deformation ratio is 1.1, end to end and be put into after again vacuumizing in desk-top oven and carry out High temperature diffusion heat treatment, High temperature diffusion heat treatment temperature is 1080 DEG C-1120 DEG C in composite pipe blank repair welding after reaming.
5) extruded: after the composite pipe blank inner and outer surface reconditioning after High temperature diffusion heat treatment, extrusion press carries out heat extrusion compacting, cutting head cutting tail, obtains the dual-metal clad steel pipe with 316 Austenitic stainless steel pipes, nickel-base alloy binder course and 30 carbon steel tubings.
Embodiment 7
A kind of dual-metal clad steel pipe, its skin is Austenitic stainless steel pipe 1, and the material of Austenitic stainless steel pipe 1 is 304 Austenitic Stainless Steels; Internal layer is carbon steel tubing 3, and the material of carbon element steel layer 3 is 70 carbon steel, and the outer surface heap of carbon steel tubing 3 is welded with nickel-base alloy binder course 2, interference fit.
Manufacture the production method of this dual-metal clad steel pipe, comprise the following steps:
1) choose external pipe and internal layer bar: the material of external pipe is 304 Austenitic Stainless Steels, the material of internal layer bar is 70 carbon steel.
2) built-up welding and turnery processing nickel base alloy layer: the nickel-base alloy binder course being greater than 2mm at the outer surface built-up welding thickness of internal layer bar, and turnery processing is carried out to nickel-base alloy binder course, the thickness of the nickel-base alloy binder course after turnery processing is 2mm.
3) interference fit machinery is bushing: after external pipe being heated to 200 DEG C-300 DEG C, to carry out interference fit machinery bushing with internal layer bar, magnitude of interference is 0.15mm, the closing line place at pipe two end part after bushing to interference fit machinery again carries out soldering and sealing, then vacuumize, last in the centre-drilling hole of internal layer solid pipe billet, the size in hole is 40mm, obtains composite pipe blank.
4) reaming and High temperature diffusion heat treatment: above-mentioned composite pipe blank is heated to 1130 DEG C-1170 DEG C, ring rolling machine carries out reaming, reaming deformation ratio is 1.1, end to end and be put into after again vacuumizing in desk-top oven and carry out High temperature diffusion heat treatment, High temperature diffusion heat treatment temperature is 1080 DEG C-1120 DEG C in composite pipe blank repair welding after reaming.
5) extruded: after the composite pipe blank inner and outer surface reconditioning after High temperature diffusion heat treatment, extrusion press carries out heat extrusion compacting, cutting head cutting tail, obtains the dual-metal clad steel pipe with 304 Austenitic stainless steel pipes, nickel-base alloy binder course and 70 carbon steel tubings.
Claims (5)
1. a dual-metal clad steel pipe, comprise Austenitic stainless steel pipe (1) and carbon steel tubing (3), it is characterized in that: the junction plane between Austenitic stainless steel pipe (1) and carbon steel tubing (3) is provided with the nickel-base alloy binder course (2) that built-up welding is lathed, interference fit.
2. a kind of dual-metal clad steel pipe according to claim 1, it is characterized in that the skin of described dual-metal clad steel pipe is Austenitic stainless steel pipe (1), internal layer is carbon steel tubing (3).
3. a kind of dual-metal clad steel pipe according to claim 1, it is characterized in that the skin of described dual-metal clad steel pipe is carbon steel tubing (3), internal layer is Austenitic stainless steel pipe (1).
4. a kind of dual-metal clad steel pipe according to claim 1,2 or 3, is characterized in that the material of described Austenitic stainless steel pipe (1) is 304 or TP310 Austenitic Stainless Steel, and the material of described carbon steel tubing (3) is 20,20G or T11 carbon steel.
5. a kind of dual-metal clad steel pipe according to claim 1, it is characterized in that the nickel-base alloy binder course (2) that the junction plane of described dual-metal clad steel pipe between Austenitic stainless steel pipe (1) and carbon steel tubing (3) is provided with built-up welding and is lathed, interference fit, and through reaming, heat treatment with extrudedly to make.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520335.1U CN204062190U (en) | 2014-09-11 | 2014-09-11 | A kind of dual-metal clad steel pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420520335.1U CN204062190U (en) | 2014-09-11 | 2014-09-11 | A kind of dual-metal clad steel pipe |
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| CN204062190U true CN204062190U (en) | 2014-12-31 |
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| CN201420520335.1U Expired - Fee Related CN204062190U (en) | 2014-09-11 | 2014-09-11 | A kind of dual-metal clad steel pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266003A (en) * | 2014-09-11 | 2015-01-07 | 邯郸新兴特种管材有限公司 | Bimetallic composite steel pipe and production method thereof |
-
2014
- 2014-09-11 CN CN201420520335.1U patent/CN204062190U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266003A (en) * | 2014-09-11 | 2015-01-07 | 邯郸新兴特种管材有限公司 | Bimetallic composite steel pipe and production method thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20170911 |
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| CF01 | Termination of patent right due to non-payment of annual fee |