CN211305161U - Stainless steel plate welding back protection tool - Google Patents
Stainless steel plate welding back protection tool Download PDFInfo
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- CN211305161U CN211305161U CN201921785179.0U CN201921785179U CN211305161U CN 211305161 U CN211305161 U CN 211305161U CN 201921785179 U CN201921785179 U CN 201921785179U CN 211305161 U CN211305161 U CN 211305161U
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Abstract
The utility model discloses a stainless steel plate welding back of body is protected frock, include the back of body that sets up with the cooperation of welding back welding seam and protect the inflation groove, the back of body is protected and is equipped with the safety cover of aerifing of V type or U type in the inflation groove, aerifys and slides in the safety cover and set up the diffusion buffer, its one end that is located outside the back of body is protected the inflation groove of diffusion buffer is equipped with the protection gas coupling. Use the utility model discloses carry out corrosion resistant plate open-faced welding operation, it is easy and simple to handle, the protection is effectual, improves work efficiency. The tool is light and reasonable in structure, and can be adjusted and moved according to the actual welding length. The air inlet diffusion buffer is adopted to realize inflation optimization; the back protection is centralized, the color of the back of the welding line is mainly white and golden, and the optimal protection effect is achieved; argon enters the protection area through the diffusion buffer, so that the replacement speed of the argon and air is accelerated, and the oxygen content in the protection area is reduced quickly.
Description
Technical Field
The utility model relates to a stainless steel plate welding back of body is protected frock.
Background
In the manufacturing process of the marine desulfurizing tower device, the related desulfurizing tower main body is coiled by super austenitic stainless steel 254SMo and super duplex stainless steel 2507 plates, the diameter of the tank body is about 3m, and the platesThe thickness of the material is 8mm, and an SUS316L stainless steel tube system accessory is also arranged on the tank body. For the welding of the stainless steel plates, some enterprises adopt a manual Tungsten Inert Gas (TIG) backing and solid wire gas shielded arc (GMAW) filling combined welding process and single-side welding. In order to ensure the welding quality of the root part, mixed gas (90% N) is adopted on the reverse side2+10％H2) And carrying out inflation protection. When stainless steel weld seam argon arc welding backing welding is carried out, because the oxidation reaction of chromium (Cr) in a parent metal is very active, if proper protective measures are not adopted, the weld seam forming on the back side is easy to corrode and oxidize in the welding process, internal elements are burnt and damaged, a bean curd residue-shaped welding defect is generated, the corrosion resistance of the weld seam is reduced, and the final test result does not meet the standard requirement. Therefore, the back protection of the weld root must be solved to prevent the back oxidation problem.
In actual welding production, in order to ensure the welding quality of the root part, the back of the welding seam is usually protected by filling a protective gas, such as argon gas or mixed gas, to isolate oxygen. However, if the whole body is filled with the protective gas, the gas can be convoluted and turbulent, the gas rejection is too large, the gas is wasted, and the actual protective effect is not good.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defect that exists among the prior art, provide stainless steel plate welding back of the body and protect frock, it is easy and simple to handle, the protection is effectual, improves work efficiency. The structure is light and reasonable, and can be adjusted and moved according to the actual welding length. The inflation optimization is realized; the back protection is centralized, the color of the back of the welding line is mainly white and golden, and the optimal protection effect is achieved; the replacement speed of argon and air in the protection area is accelerated, and the oxygen content in the protection area is reduced rapidly.
In order to achieve the purpose, the technical scheme of the utility model is to design a stainless steel plate welding back protection tool, which comprises a back protection inflation groove matched with a welding back weld joint, wherein a V-shaped or U-shaped inflation protection cover is arranged in the back protection inflation groove, a diffusion buffer is arranged in the inflation protection cover in a sliding way, and one end of the diffusion buffer, which is positioned outside the back protection inflation groove, is provided with a protection gas pipe joint; the diffusion buffer is a copper pipe, the surface of the diffusion buffer is provided with a row of argon gas inlet holes, the air inlet holes are arranged along the length direction of the copper pipe, the back protection inflation groove is formed by welding and fixing two transversely arranged angle steels and two longitudinally arranged angle steels, four angle steels are fixedly arranged on the back protection bottom plate, the two longitudinal angle steels are respectively arranged at two sides of the copper pipe, one transverse angle steel is provided with an adaptive hole for sliding the copper pipe, and a stepped annular sealing stopper is fixedly arranged at the adaptive hole; the inflatable protective cover is fixed on the back protection bottom plate or welded and fixed on the two longitudinal angle steels. The inflatable protective cover is matched with the welding seam on the back of the welding. Argon enters a protection area through a diffusion buffer, so that the replacement speed of the argon and air is accelerated, and the oxygen content in the protection area is reduced quickly; the back protection is concentrated, the color of the back of the welding line is mainly white and golden, and the best protection effect is achieved. The stepped annular sealing stopper fixedly arranged at the adapting hole can block the argon gas inlet hole exposed outside the angle steel if a part of one argon gas inlet hole is just positioned outside the angle steel after the diffusion buffer extends into the back protection inflation groove and the length is set, so that the stepped annular sealing stopper can block the argon gas inlet hole exposed outside the angle steel.
The further technical proposal is that the part of the diffusion buffer outside the back protection inflation groove is sleeved with an air blocking sleeve. The air blocking sleeve is in a tubular shape made of plastic film material, two pipe ends of the air blocking sleeve are fixedly provided with elastic rubber sealing rings, the length of the air blocking sleeve is equal to that of the copper pipe, in the way, after the length of the copper pipe in the back protection inflation groove is adjusted according to the length of the welding seam (because the gas blocking sleeve made of plastic film material is adopted, the length of the gas blocking sleeve can be freely adjusted according to the length of the part of the pipe section of the copper pipe outside the back protection inflation groove), the gas blocking sleeve is sleeved on the part of the copper pipe outside the back protection inflation groove to shield the argon gas inlet hole on the part of the pipe section, so as to avoid the discharge of argon on the copper pipe section without the welding seam area and the waste of argon as the back protective gas at the root part of the welding seam, so that the back protective gas argon is only discharged at the back of the welding seam, when argon waste is reduced, the welding seam forming on the back surface is not easy to corrode and oxidize in the welding process.
The further technical scheme is that a connecting ring is fixedly arranged on the diffusion buffer, a connecting rod with a hook is arranged in a matching mode with the connecting ring, two ends of the connecting rod are respectively provided with a hook, one hook is arranged in a matching mode with the connecting ring, and the other hook is matched with the connecting ring fixedly arranged on the welding equipment. The welding device is a welding gun; the mode can enable the copper pipe to move simultaneously along with the movement of the welding gun during welding, always cover the back of the welding seam and not cover the whole back of the welding seam at the beginning, so that the problem that the argon is consumed greatly and the argon is wasted due to the fact that the whole welding seam needs to be covered at the beginning (and the problem that the advance time of filling the protective gas is long due to the fact that the whole welding seam needs to be covered at the beginning) can be avoided.
The further technical scheme is that a sealing rubber plate is fixedly arranged at the end part of the diffusion buffer positioned at one end of the back protection inflation groove, and a sealing rubber strip is fixedly arranged at the edge of the angle steel facing to the piece to be welded; one or two air vents are arranged on the sealing rubber plate. The sealing rubber plate is matched with the longitudinal section of the inflatable protective cover in shape; make the dead weight of the weldment of treating of utilization during welding like this make the weldment of treating tightly to lean on with the sealing rubber strip, guarantee to form and protect the gas charging groove for sealed back, only discharge the air in the gas charging groove of protecting the back through the exhaust hole, reduce the quantity of protective gas argon gas, also can further reduce gaseous circling round and turbulent flow.
A further technical scheme is that a hole blocking plate used for adjusting the size of the exhaust hole is hinged to the sealing rubber plate, and an adjusting line is fixedly arranged on the hole blocking plate. Because the desulfurizing tower main part adopts the corrosion resistant plate system of rolling up to form, in order to adjust copper pipe length (according to welding seam length) for being convenient for, its angle steel length of this frock is longer, consequently when the welding, it has one end to be located the steel sheet outside in back of the body protection gas charging groove, and aforementioned structure (the structure that exhaust hole size was adjusted) can set up on this frock like this. The length of the adjusting line is long, so that the adjusting line can still extend out of the back protection inflation groove and the end far away from the copper pipe when the copper pipe extends into the shortest length of the back protection inflation groove, and the size of the exhaust hole can be adjusted (the existing measuring tool for measuring the gas flow can be utilized during adjustment, and the adjustment of the size of the exhaust hole is stopped after the proper gas flow is reached).
The utility model has the advantages and the beneficial effects that: use the utility model discloses carry out corrosion resistant plate open-faced welding operation, it is easy and simple to handle, the protection is effectual, improves work efficiency. The tool is light and reasonable in structure, and can be adjusted and moved according to the actual welding length. The air inlet diffusion buffer is adopted to realize inflation optimization; the back protection is centralized, the color of the back of the welding line is mainly white and golden, and the optimal protection effect is achieved; argon enters a protection area through a diffusion buffer, so that the replacement speed of the argon and air is accelerated, and the oxygen content in the protection area is reduced quickly; after the length of the copper pipe in the back protection inflation groove is adjusted according to the length of the welding seam (because the gas blocking sleeve made of plastic film materials is adopted, the length of the gas blocking sleeve can be freely adjusted according to the length of the part of the pipe section of the copper pipe outside the back protection inflation groove), the gas blocking sleeve is sleeved on the part of the copper pipe outside the back protection inflation groove to shield an argon gas inlet hole on the part of the pipe section, so that the argon gas is discharged from the copper pipe section in a welding seam-free area, the waste of the argon gas serving as the back protection gas at the root of the welding seam is avoided, the back protection argon gas is only discharged from the back of the welding seam, and the welding seam forming at the back is not easy to corrode and oxidize in the welding process. When welding, the copper pipe moves along with the movement of the welding gun, the copper pipe always covers the back of the welding seam and does not cover the whole back of the welding seam from the beginning, so that the problem that the argon consumption is large and the argon is wasted because the whole welding seam needs to be covered from the beginning (and the problem that the advance time of filling the protective gas is long because the whole welding seam needs to be covered from the beginning) can be avoided. During welding, the dead weight of the part to be welded is utilized to enable the part to be welded to be tightly abutted against the sealing rubber strip, a back protection inflation groove which is sealed is guaranteed to be formed, air in the back protection inflation groove is discharged only through the exhaust hole, the using amount of protective gas argon is reduced, and the convolution and turbulence of gas can be further reduced. The size of the vent hole can be adjusted (the existing metering tool for measuring the gas flow can be utilized during adjustment, and the size of the vent hole is stopped being adjusted after the proper gas flow is reached) so as to meet the requirement of the purity of the shielding gas as soon as possible and reduce the consumption of the shielding gas as far as possible when different welding requirements are met.
Drawings
FIG. 1 is a schematic view of a first embodiment of a stainless steel plate welding back protection tool of the present invention;
FIG. 2 is a side view of the angle and the inflatable protective cover of FIG. 1;
FIG. 3 is a top perspective view of the stepped annular seal stop of FIG. 1 rotated 90 clockwise;
fig. 4 is a schematic view of a second embodiment of the present invention;
fig. 5 is a schematic view of a third embodiment of the present invention;
FIG. 6 is an exploded view of the air shield sleeve of FIG. 4 without a diffusion bumper attached thereto;
FIG. 7 is a side view of the back protection plenum, angle section of FIG. 4;
FIG. 8 is a side view of the portion of the seal rubber plate in FIG. 4;
fig. 9 is a schematic view of another state of the baffle plate of fig. 7.
In the figure: 1. a back protection inflation groove; 2. an inflatable protective cover; 3. a diffusion buffer; 4. a gas pipe joint; 5. an air inlet; 6. angle steel; 7. a gas-blocking sleeve; 8. an elastic rubber seal ring; 9. a connecting ring; 10. hooking; 11. a connecting rod; 12. welding equipment; 13. sealing the rubber plate; 14. sealing the rubber strip; 15. an exhaust hole; 16. a hole blocking plate; 17. an adjustment line; 18. a stepped annular seal stop.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
as shown in fig. 1 to 3, the utility model discloses a stainless steel plate welding back of body is protected frock, include the back of body. The diffusion buffer 3 is a copper pipe, the surface of which is provided with a row of argon gas inlet holes 5, the air inlet holes 5 are arranged along the length direction of the copper pipe, the back protection inflation groove 1 is formed by welding and fixing two transversely arranged angle steels 6 and two longitudinally arranged angle steels 6, the four angle steels 6 are fixedly arranged on a back protection bottom plate, the two longitudinal angle steels 6 are respectively arranged at two sides of the copper pipe, and one transverse angle steel 6 is provided with an adaptive hole for the copper pipe to slide; the inflatable protective cover 2 is fixed on the back protective bottom plate or welded and fixed on two longitudinal angle steels 6. The outer diameter of the copper pipe is 15mm, the outer diameter of the air pipe connector is 6mm, the air inlets are uniformly arranged at intervals, the distance is 10mm, the specification of angle steel is L25 multiplied by 25 multiplied by 5(mm), the length of the angle steel transversely arranged by the tool is 230mm, and the length of the angle steel longitudinally arranged by 450 mm; the width of the back protection aeration tank (the distance between two opposite tank inner walls) is 25 mm. The adapting hole is fixedly provided with a stepped annular sealing stopper 18, the outer diameter of the large-size end of the stepped annular sealing stopper is matched with the aperture of the adapting hole, and the size of the inner hole of the stepped annular sealing stopper is matched with the outer diameter of the copper pipe.
The red copper air pipe (namely the copper pipe) is connected with the air bottle before welding, the valve of the air bottle is opened to start inflation, and protective gas escapes through the dense exhaust holes in the copper pipe. And protective gas is filled in advance before welding. The back gas filling flow is set to be 20L/min, the length L is 500mm standard welding test plates as an example, the volume of a formed gas chamber is about 0.5L, and the purity of the protective gas can meet the requirement after half a minute. The early inflation time may be scaled up in length for welds exceeding 500 mm. The gas-filled protection must be carried out all the time during the whole welding process.
1) The tool is light in structure and simple to operate, the length of the inflation tube can be adjusted according to the actual welding length, and the protective gas does not need to be opened too much and is less in waste.
2) The back protection is concentrated, the color of the back of the welding line is mainly white and golden, and the best protection effect is achieved.
3) The technical data prove that: under the condition of the same argon filling flow, argon is directly filled, atmosphere disorder can be caused, the replacement speed of the argon and air is reduced, and the oxygen content is reduced slowly; and argon enters the protection area through the diffusion buffer, so that the replacement speed of the argon and air is accelerated, and the oxygen content in the protection area is reduced quickly. This frock adopts the diffuser that admits air to realize aerifing the optimization.
After welding, continuously inflating for 1 minute and then stopping inflating; ten stainless steel welding process approval test tasks are fully completed by utilizing the tool set, good use effect and economic effect are achieved, and the high efficiency, the practicability and the reliability of the tool set device are fully proved.
Example two:
the difference from the first embodiment is that, as shown in fig. 4, a connecting ring 9 is fixedly arranged on the diffusion buffer 3, a connecting rod 11 with hooks 10 is arranged on the connecting ring 9, and two ends of the connecting rod 11 are respectively provided with a hook 10, wherein one hook is arranged on the connecting ring 9 and the other hook is arranged on the connecting ring 9 fixedly arranged on the welding device 12.
Example three:
the difference from the first embodiment is that, as shown in fig. 5 to 9 (only one adjustment line is shown in fig. 7 and 8 for convenience of illustration), the diffusion buffer 3 is sleeved with the air blocking sleeve 7 at a portion thereof located outside the back protection air-filling duct 1. The air blocking sleeve 7 is in a tubular shape made of plastic film materials, two pipe ends of the air blocking sleeve 7 are fixedly provided with elastic rubber sealing rings 8, and the length of the air blocking sleeve 7 is equal to that of a copper pipe; the end part of the diffusion buffer 3, which is positioned at one end of the back protection inflation groove 1, is fixedly provided with a sealing rubber plate 13, and the edge of the angle steel 6, which faces to a piece to be welded, is fixedly provided with a sealing rubber strip 14; one or two air vent holes 15 are provided on the sealing rubber plate 13. The sealing rubber plate 13 is hinged with a hole blocking plate 16 for adjusting the size of the exhaust hole 15, and the hole blocking plate 16 is fixedly provided with an adjusting line 17.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The stainless steel plate welding back protection tool is characterized by comprising a back protection inflation groove matched with a welding back weld joint, wherein a V-shaped or U-shaped inflation protection cover is arranged in the back protection inflation groove; the diffusion buffer is a copper pipe, the surface of the diffusion buffer is provided with a row of argon gas inlet holes, the air inlet holes are arranged along the length direction of the copper pipe, the back protection inflation groove is formed by welding and fixing two transversely arranged angle steels and two longitudinally arranged angle steels, four angle steels are fixedly arranged on the back protection bottom plate, the two longitudinal angle steels are respectively arranged at two sides of the copper pipe, one transverse angle steel is provided with an adaptive hole for sliding the copper pipe, and a stepped annular sealing stopper is fixedly arranged at the adaptive hole; the inflatable protective cover is fixed on the back protection bottom plate or welded and fixed on the two longitudinal angle steels.
2. The stainless steel plate welding back protection tool according to claim 1, wherein a gas blocking sleeve is sleeved on a part of the diffusion buffer, which is positioned outside the back protection gas filling groove.
3. The stainless steel plate welding back protection tool according to claim 1, wherein a connecting ring is fixedly arranged on the diffusion buffer, a connecting rod with a hook is arranged on the diffusion buffer in a matching mode with the connecting ring, two hooks are arranged at two ends of the connecting rod, one hook is matched with the connecting ring, and the other hook is matched with the connecting ring fixedly arranged on the welding equipment.
4. The stainless steel plate welding back protection tool according to claim 3, wherein a sealing rubber plate is fixedly arranged at the end part of the diffusion buffer positioned at one end of the back protection gas-filled groove, and a sealing rubber strip is fixedly arranged at the edge of the angle steel facing to a piece to be welded; one or two air vents are arranged on the sealing rubber plate.
5. The stainless steel plate welding back protection tool according to claim 4, wherein a hole blocking plate for adjusting the size of the exhaust hole is hinged to the sealing rubber plate, and an adjusting line is fixedly arranged on the hole blocking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921785179.0U CN211305161U (en) | 2019-10-23 | 2019-10-23 | Stainless steel plate welding back protection tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921785179.0U CN211305161U (en) | 2019-10-23 | 2019-10-23 | Stainless steel plate welding back protection tool |
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| CN211305161U true CN211305161U (en) | 2020-08-21 |
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| CN201921785179.0U Active CN211305161U (en) | 2019-10-23 | 2019-10-23 | Stainless steel plate welding back protection tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110802314A (en) * | 2019-10-21 | 2020-02-18 | 中船澄西船舶修造有限公司 | Stainless steel plate welding back protection inflation tool |
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2019
- 2019-10-23 CN CN201921785179.0U patent/CN211305161U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110802314A (en) * | 2019-10-21 | 2020-02-18 | 中船澄西船舶修造有限公司 | Stainless steel plate welding back protection inflation tool |
| CN110802314B (en) * | 2019-10-21 | 2021-05-25 | 中船澄西船舶修造有限公司 | Stainless steel plate welding back protection inflation tool |
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