CN211915931U - Welding tool for large-size bent pipe assembly - Google Patents
Welding tool for large-size bent pipe assembly Download PDFInfo
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- CN211915931U CN211915931U CN201922165371.6U CN201922165371U CN211915931U CN 211915931 U CN211915931 U CN 211915931U CN 201922165371 U CN201922165371 U CN 201922165371U CN 211915931 U CN211915931 U CN 211915931U
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Abstract
The invention relates to a large-size elbow component welding tool which comprises a base, a cylinder, a left baffle, a right baffle and a vent pipe, wherein two through hole groups are arranged on the base, and the positions of threaded holes in the through hole groups correspond to threaded holes in an assembled left elbow and an assembled right elbow; a cylinder is arranged between the left bent pipe and the right bent pipe, and the diameter of the cylinder is smaller than that of the straight pipe in the middle of the assembly; a left baffle and a right baffle are arranged between the cylinder and the left elbow pipe and between the cylinder and the right elbow pipe; the baffle is provided with a vent hole for introducing argon gas during welding, and the vent pipe is communicated with the through hole on the baffle through the through hole of the base; the cylinder is composed of a plurality of small cylinders with the same diameter. Welding frock the utility model discloses do not have complicated mechanical structure, easy to operate uses, carries out the welding on this frock, when guaranteeing external interface size, the cylinder reduces the product inner chamber volume with the baffle, has promoted the gas shield effect, has guaranteed product welding quality.
Description
Technical Field
The invention belongs to a welding tool, relates to a large-size elbow assembly welding tool, and particularly relates to a large-size elbow assembly welding tool, belonging to the field of liquid rocket engine manufacturing.
Background
The welding technology is widely applied to the liquid rocket engine, a certain large-size elbow component is formed by welding a left elbow, a round pipe and a right elbow, in the earlier stage, a special welding tool is not needed during product welding, the distance between the outlet axis of the welded left elbow and the outlet axis of the welded right elbow is shortened by 5-10mm, subsequent assembly cannot be carried out, meanwhile, the volume of the inner cavity of the elbow component is large, the effect of directly introducing argon is poor, and the welding percent of pass is low.
Disclosure of Invention
Technical problem to be solved
In order to avoid the defects of the prior art, the invention provides the large-size elbow component welding tool, which can ensure the size of the interface of the large-size elbow component, improve the protection effect of the back of the welding line and improve the welding quality.
Technical scheme
A large-size elbow component welding tool is characterized by comprising a base 2, a cylinder 3, a left baffle 4, a right baffle 5 and a vent pipe 6; two through hole groups are arranged on the base 2, the distance between the two through hole groups is matched with the length size of the assembled bent pipe, and the positions of the threaded holes in the through hole groups correspond to the threaded holes in the assembled left bent pipe and the assembled right bent pipe; a cylinder 3 is arranged between the left bent pipe and the right bent pipe, and the diameter of the cylinder is smaller than that of the straight pipe in the middle of the assembly; a left baffle 4 and a right baffle 5 are arranged between the cylinder 3 and the left elbow pipe and the right elbow pipe, and the diameter of the left baffle 4 and the right baffle is smaller than that of the straight pipe in the middle of the assembly; the baffle is provided with a vent hole for introducing argon gas during welding, and the vent pipe 6 is communicated with the through hole on the baffle through the through hole of the base 2; the cylinder 3 is composed of a plurality of small cylinders with the same diameter.
The cylinder 3 consists of 3-5 small cylinders with the same diameter.
The diameter of the cylinder 3 is 5-10mm smaller than the inner diameter of the circular tube 7.
The diameters of the left baffle 4 and the right baffle 5 are 3-5 mm smaller than the inner diameter of the circular tube 7.
The base 2 is made of 30CrMnSiA subjected to thermal refining.
The cylinder 3 is made of low-carbon steel or aluminum alloy.
The left baffle 4 and the right baffle 5 are made of low carbon steel or stainless steel with the thickness of 2 mm.
The breather pipe 6 adopts
Stainless steel tubes.
Advantageous effects
The invention provides a large-size elbow component welding tool which mainly comprises a base, a cylinder, a left baffle, a right baffle and a vent pipe, wherein vent holes are processed in the left baffle and the right baffle. The external interface size of the large-size elbow pipe assembly can be guaranteed, the protection effect of the back of the welding seam can be improved, and the welding quality is improved. Welding frock the utility model discloses do not have complicated mechanical structure, the very easy operation is used, carries out the welding on this frock, when guaranteeing external interface size, the cylinder reduces the product inner chamber volume with the baffle, has promoted the argon protection effect, has guaranteed product welding quality.
Drawings
FIG. 1 is a schematic structural view of a large-size elbow assembly welding tool according to the present invention
FIG. 2 is a top view of FIG. 1
1-large-size bent pipe assembly, 2-base, 3-cylinder, 4-left baffle, 5-right baffle, 6-vent pipe, 7-round pipe, 8-left bent pipe and 9-right bent pipe.
Detailed Description
The invention will now be further described with reference to the following examples and drawings:
the large-size bent pipe assembly 1 is mainly formed by assembling and welding a circular pipe 7, a left bent pipe 8 and a right bent pipe 9. The material is nickel-based high-temperature alloy, and a certain gap needs to be opened when the round pipe 7 is welded with the left bent pipe 8 and the right bent pipe 9.
The large-size elbow component welding tool comprises a base 2, a cylinder 3, a left baffle 4, a right baffle 5 and a vent pipe 6, wherein the base 2 is processed by adopting 30CrMnSiA subjected to thermal refining treatment and is used for assembling and limiting a large left elbow 8 and a right elbow 9; the base 2 is also provided with a through hole for assembling a bolt, the position of the through hole corresponds to the threaded holes on the left elbow 8 and the right elbow 9, and the left elbow 8, the right elbow 9 and the base 2 are fixed by bolts.
The diameter of the cylinder 3 is 5-10mm smaller than the inner diameter of the circular tube 7, the cylinder 3 is composed of 3-5 small cylinders with the same diameter, the cylinders are convenient to be separately taken out after welding, the cylinder 3 is made of low-carbon steel or aluminum alloy, the left baffle 4 and the right baffle 5 are made of low-carbon steel or stainless steel with the thickness of 2mm, the diameter is 3-5 mm smaller than the inner diameter of the circular tube 7, vent holes are formed in the baffles, and argon can be introduced through the vent pipes during welding. The vent pipe 6 is made of phi 6 x 1 stainless steel pipe.
The base 2 is made of 30CrMnSiA, the heat treatment state is a quenched and tempered state, and a boss matched with the outlet of the bent pipe assembly is processed on the base and used for assembling and limiting the large left bent pipe 8 and the right bent pipe 9; the base 2 is also provided with a through hole for assembling a bolt, the position of the through hole corresponds to the threaded holes on the left elbow 8 and the right elbow 9, and the left elbow 8, the right elbow 9 and the base 2 are fixed by bolts.
The cylinder 3 is made of low-carbon steel or aluminum alloy, the diameter of the cylinder 3 is slightly smaller than the inner diameter of the elbow assembly, and the cylinder 3 is composed of a plurality of small cylinders with the same length and the same diameter and is beneficial to being taken out after welding.
The left baffle 4 and the right baffle 5 are made of low-carbon steel or stainless steel, the diameters of the left baffle 4 and the right baffle 5 are slightly smaller than the inner diameters of the left elbow pipe 8 and the right elbow pipe, vent holes are processed in the left baffle 4 and the right baffle 5, and argon can be introduced through the vent pipe 6 during welding.
The vent pipe 6 is made of stainless steel pipe.
In the assembling process of the tool, the left elbow pipe 8 and the right elbow pipe 9 are assembled on the base 2 firstly and are fixed by bolts, then the vent pipe 6 is assembled on the base from the inner sides of the left elbow pipe 8 and the right elbow pipe 9 and is connected with the protective gas cylinder, the left baffle 4 and the right baffle 5 are assembled, the left baffle 4 and the right baffle 5 are fixed with the vent pipe 6 through holes, the cylinder 3 is assembled in the circular pipe 7, and the circular pipe of the assembled cylinder is assembled between the left elbow pipe 8 and the right elbow pipe 9.
Argon is introduced from the vent pipe 6, the flow rate of the argon is 5-8L/min, and the left bent pipe 8, the right bent pipe 9 and the circular pipe 7 are positioned and welded. After the product is completely cooled, the product is taken down from the base 2, and the vent pipe 6, the left baffle 4, the right baffle 5 and the cylinder 3 are taken down in sequence.
Claims (8)
1. A large-size elbow component welding tool is characterized by comprising a base (2), a cylinder (3), a left baffle (4), a right baffle (5) and a vent pipe (6); two through hole groups are arranged on the base (2), the distance between the two through hole groups is matched with the length and the size of the assembled bent pipe, and the positions of the threaded holes in the through hole groups correspond to the threaded holes in the assembled left bent pipe and the assembled right bent pipe; a cylinder (3) is arranged between the left bent pipe and the right bent pipe, and the diameter of the cylinder is smaller than that of the straight pipe in the middle of the assembly; a left baffle (4) and a right baffle (5) are arranged between the cylinder (3) and the left elbow pipe and the right elbow pipe; the baffle is provided with a vent hole for introducing argon gas during welding, and the vent pipe (6) is communicated with the through hole on the baffle through the through hole of the base (2); the cylinder (3) is composed of a plurality of small cylinders with the same diameter.
2. The large-size elbow component welding tool according to claim 1, wherein: the cylinder (3) is composed of 3-5 small cylinders with the same diameter.
3. The large-size elbow component welding tool according to claim 1, wherein: the diameter of the cylinder (3) is 5-10mm smaller than the inner diameter of the circular tube (7).
4. The large-size elbow component welding tool according to claim 1, wherein: the diameters of the left baffle (4) and the right baffle (5) are 3-5 mm smaller than the inner diameter of the circular tube (7).
5. The large-size elbow component welding tool according to claim 1, wherein: the base (2) is made of 30CrMnSiA subjected to thermal refining.
6. The large-size elbow component welding tool according to claim 1, wherein: the cylinder (3) is made of low-carbon steel or aluminum alloy.
7. The large-size elbow component welding tool according to claim 1, wherein: the left baffle (4) and the right baffle (5) are made of low-carbon steel or stainless steel with the thickness of 2 mm.
8. The large-size elbow component welding tool according to claim 1, wherein: the vent pipe (6) adopts
Stainless steel tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922165371.6U CN211915931U (en) | 2019-12-05 | 2019-12-05 | Welding tool for large-size bent pipe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922165371.6U CN211915931U (en) | 2019-12-05 | 2019-12-05 | Welding tool for large-size bent pipe assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211915931U true CN211915931U (en) | 2020-11-13 |
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ID=73325087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922165371.6U Active CN211915931U (en) | 2019-12-05 | 2019-12-05 | Welding tool for large-size bent pipe assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211915931U (en) |
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2019
- 2019-12-05 CN CN201922165371.6U patent/CN211915931U/en active Active
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