CN101328995A - Method for welding stainless steel tube clamp pressure point - Google Patents
Method for welding stainless steel tube clamp pressure point Download PDFInfo
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- CN101328995A CN101328995A CNA2007101985937A CN200710198593A CN101328995A CN 101328995 A CN101328995 A CN 101328995A CN A2007101985937 A CNA2007101985937 A CN A2007101985937A CN 200710198593 A CN200710198593 A CN 200710198593A CN 101328995 A CN101328995 A CN 101328995A
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- pipe
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- steel tube
- pipe fitting
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Abstract
The invention discloses a stainless steel tube block-press point welding method, which is characterized in that the method comprises the following steps: the caliber of the end of a pipe (1) is shrunk by a clamping tool to form a smooth slope; one end of the pipe (1) which forms the slope is inserted into the part connected with a pipe fitting (4) to be positioned, and then the clearance between the pipe (1) and the pipe fitting (4) is blocked tightly by the clamping tool; the clearance of a sealing ring (3) is blocked tightly; the joint of the pipe (1) and the pipe fitting (4) is point-welded; after the point welding process is completed, cooling by water is carried out and then the gripper die is removed. The invention has the advantages that: as the block-press point welding is adopted, the welding temperature is lower than that of circumference all welding, and the damage to stainless steel tube materials is small. The requirements to the welding technology of the block-press point welding is lower than that of the circumference all welding, and the field operation is simple and convenient, the method is suitable for being operated by general workers. The block-press point welding connection has no limitation on a stainless steel tube with large caliber and thin wall, can connect pipe fittings with above DN100, does not erode the pipe fittings, and has neat and beautiful appearance.
Description
(1), technical field:
The invention belongs to the class of jobs technical field.Specifically, The present invention be directed to the connecting means that Stainless Steel Tube is implemented the clamp pressure point weldering.
(2), background technique:
For thin-wall stainless steel, pipe and pipes connecting method adopt card to press interconnection technique usually at present.This connecting means has narrow limitation and insecurity.Reason is to have now card and presses the tube wall that connects Stainless Steel Tube thinner usually, and anti-pressure ability is relatively poor relatively after the clamp-press type connection, when adopting card to press connection to the tubing more than the DN50, pulls under the situation of burst pressure easily, causes fountain type to leak.Moreover existing card presses interconnection technique to use on interior tubing at DN100, and adopts circumference to weld connection entirely usually at the tubing more than the DN100.Yet, adopt the full welding method of circumference that significant limitation is arranged at the construction field (site) for thin-wall stainless steel.And because of weld interval long, the welding temperature height, the pipe in residuary waters under high-temperature condition, urgently easily make the pipe carbonization, the Stainless Steel Tube anti-corrosion capability that is carbonized will reduce greatly.Another critical defect of the full welding method of circumference is that high temperature can cause the steel pipe inner seal ring impaired, and impaired seal ring can't be implemented sealing.It is that welding back material intractability is big that circumference welds thirdly defective entirely, and not only influence is whole specious, and removes difficult unusually.For this reason, novel clamp pressure point welding connection method at large-caliber thin-walled Stainless Steel Tube is in good time and necessity.
Card is pressed and the shortcoming of the full welding technique of circumference in order to overcome, and the objective of the invention is at Stainless Steel Tube, particularly proposes a kind of novel clamp pressure point welding connection method at the above Stainless Steel Tube of DN50.For this reason, special proposition the present invention.
(3), summary of the invention:
The present invention seeks to be achieved by following clamp pressure point welding connection method.This method comprises the steps:
1, elder generation receives the bore of pipe termination little with the cramping instrument and forms a smooth slope.To ensure that pipe does not destroy seal ring when inserting pipe fitting.
2, pipe is formed the landslide end and inject part and the location that pipe fitting is connected, the back makes it to be convenient to spot welding and improves spot welding speed with the space between cramping instrument chucking pipe and pipe fitting.
3, chucking seal ring space is so that seal ring really plays good seal action.
4, spot welding pipe and pipe fitting junction point.
5, water water cooling after point welding process is finished, lay down clamping again.
The invention process spot welding method additional technical feature is between the adjacent welds distance to be arranged.
Another additional technical feature of the invention process spot welding method is that solder joint should be even in the distribution of circumference.
Welding wire can be used during the invention process spot welding, also welding wire can be do not used.Described number of welds can be decided according to pipe diameter.
Implementing beneficial effect of the present invention is:
1., because of adopting spot welding, welding temperature is lower than the full weldering temperature of circumference, and is little to Stainless Steel Tube material destructiveness.
2., clamp pressure point weldering connects lowlyer than the full weldering of circumference to the requirement of welding technique, execute-in-place is easy.Be fit to general workman's operation.
3., the clamp pressure point weldering anti-pulling ability that connects the back tie point is better than card far away and presses and connect, the probability that pipeline pulls during the fortuitous event generation is little, destructiveness is also little.
4., clamp pressure point weldering connects that bigbore thin-wall stainless steel is not had narrow limitation, can connect the above tubing of DN100.
5., clamp pressure point weldering connects the back stainless steel pipe outward appearance handled easily, outward appearance is clean and tidy, attractive in appearance.
(4), description of drawings:
Fig. 1 is that pipe of the present invention injects pipe fitting spot welding schematic representation.Wherein, 1 is pipe; 2 solder joints; 3 is pipe fitting prominence seal ring; 4 is tubing;
Fig. 2 is Fig. 1 left view.Show between adjacent two solder joints distance is arranged.All solder joints are uniformly distributed along the circumference.
(5), embodiment
Further illustrate spot welding method of the present invention below in conjunction with embodiment.Referring to accompanying drawing, the first step, elder generation receives pipe 1 termination bore little with the cramping instrument and forms a smooth slope, does not damage seal ring 3 when inserting pipe fitting to ensure pipe.In second step, pipe 1 landslide end is injected part and the location that pipe fitting 4 is connected.Referring to accompanying drawing 1, the back is with the space of cramping instrument chucking pipe 1 with 4 of pipe fittings, to reduce spot welding difficulty and quickening spot welding speed.In the 3rd step, the space of chucking seal ring 3 makes seal ring 3 really play good seal action.In the 4th step, spot welding pipe 1 and pipe fitting 4 junction points are shown in 2 among Fig. 1.The 5th step, after finishing, the some postwelding waters water cooling, lay down clamping again.
Should leave distance between the adjacent welds.As shown in Figure 2, overheated to prevent seal ring.
Each solder joint should evenly distribute in the circumference place.
Above-mentioned number of welds can be decided according to the pipe diameter size.
In the embodiment of the invention, the number of welds most preferred embodiment is as shown in the table:
| Tube outer diameter DN (mm) | 63 | 76 | 101.6 | 133 | 159 | 219 |
| Number of welds | 5 | 6 | 7 | 8 | 10 | 14 |
Welding wire can be used during spot welding, also welding wire can be do not used.When adopting welding wire, should adopt 304 or the welding wire of the high material of nickel content.
In the present embodiment, seal ring adopts the good edible silicone rubber of heat resistance.
Above-mentioned cited embodiment is only for the usefulness that the present invention is described; and be not to be limitation of the present invention; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the spirit and scope of the present invention; the various variations of having done, all technological schemes that are equal to also should belong to the category of the present invention's protection.
Claims (3)
1, a kind of method for welding stainless steel tube clamp pressure point is characterized in that this method comprises the steps:
One, elder generation receives the bore of pipe (1) termination little with the cramping instrument and forms a smooth slope.
Two, pipe (1) is formed the landslide end and inject part and the location that pipe fitting (4) is connected, the back is with the space between cramping instrument chucking pipe (1) and pipe fitting (4).
Three, chucking seal ring (3) space.
Four, spot welding pipe (1) and pipe fitting (4) junction point.
Five, water water cooling after point welding process is finished, lay down clamping again.
2, the clamp pressure point welding method of a kind of Stainless Steel Tube according to claim 1 is characterized in that between the adjacent welds distance being arranged.
3, the clamp pressure point welding method of a kind of Stainless Steel Tube according to claim 1 is characterized in that each solder joint should be even in the distribution of circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101985937A CN101328995A (en) | 2007-12-14 | 2007-12-14 | Method for welding stainless steel tube clamp pressure point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101985937A CN101328995A (en) | 2007-12-14 | 2007-12-14 | Method for welding stainless steel tube clamp pressure point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101328995A true CN101328995A (en) | 2008-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101985937A Pending CN101328995A (en) | 2007-12-14 | 2007-12-14 | Method for welding stainless steel tube clamp pressure point |
Country Status (1)
| Country | Link |
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| CN (1) | CN101328995A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395822A (en) * | 2009-04-16 | 2012-03-28 | 田纳科汽车营运公司 | Method of installing rotatable flapper valve to an interior of a conduit |
| WO2016029759A1 (en) * | 2014-08-29 | 2016-03-03 | 深圳市雅昌管业股份有限公司 | Lip seal welded-type pipe fitting interface and installation method therefor |
-
2007
- 2007-12-14 CN CNA2007101985937A patent/CN101328995A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395822A (en) * | 2009-04-16 | 2012-03-28 | 田纳科汽车营运公司 | Method of installing rotatable flapper valve to an interior of a conduit |
| CN102395822B (en) * | 2009-04-16 | 2014-01-15 | 田纳科汽车营运公司 | Method of installing rotatable flapper valve to an interior of a conduit |
| WO2016029759A1 (en) * | 2014-08-29 | 2016-03-03 | 深圳市雅昌管业股份有限公司 | Lip seal welded-type pipe fitting interface and installation method therefor |
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Legal Events
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| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Fu Yuqin Ma Guanglu Document name: Notification to Make Rectification |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081224 |