CN201685034U - Internal protective device for welding of non-ferrous metal pipe - Google Patents
Internal protective device for welding of non-ferrous metal pipe Download PDFInfo
- Publication number
- CN201685034U CN201685034U CN2009200735303U CN200920073530U CN201685034U CN 201685034 U CN201685034 U CN 201685034U CN 2009200735303 U CN2009200735303 U CN 2009200735303U CN 200920073530 U CN200920073530 U CN 200920073530U CN 201685034 U CN201685034 U CN 201685034U
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- welding
- pipeline
- protective device
- ferrous metal
- end plates
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Abstract
The utility model relates to pipe machining, in particular to an auxiliary device for pipe welding. The internal protective device for welding of a non-ferrous metal pipe is used for mouth-to-mouth welding of the pipe, and comprises a pair of end plates with the diameter not less than the inner diameter of the pipe; one side surfaces of the two end plates are respectively provided with a pull ring tied with a stay cord, the side surfaces thereof without the pull rings are correspondingly arranged in a pipe mouth, and the middle of one end plate thereof is provided with an air hole. The internal protective device can save protective gas, accelerate welding, and ensure welding quality.
Description
Technical field
The utility model relates to pipeline processing, relates in particular to the servicing unit of pipeline welding.
Background technology
Non-ferrous metal at high temperature have very active chemical property and thermal conductivity factor low, thermal capacity is big.As titanium alloy, stainless steel etc.Very difficult when welding with the pipeline that this class material is made, with the titanium alloy is example: when industrially pure titanium is exposed in the air, promptly can form one deck densification, highly stable oxide-film from the teeth outwards, stable chemical performance, but at high temperature have very active chemical property, the affinity of oxygen, hydrogen and nitrogen is substantially exceeded the affinity of iron to these gases.Titanium is fierce these gases that absorb under the welding molten state, and temperature is long more high more action time, and then contaminated scope is big more and dark more, has reduced the plasticity of metal greatly and has improved its hardness and intensity.Nitrogen and oxygen form interstitial solid solution with titanium in quite wide concentration range, titanium forms titanium nitride in beginning and nitrogen effect more than 700 ℃, when the content of nitrogen surpasses solubility under a certain temperature, and existence mutually in the middle of titanium nitride is, the hardness of middle phase is very high, and plasticity is reduced greatly.When being higher than 600 ℃, oxygen and titanium effect form titanium dioxide, and the angle of bend of weld seam is reduced.Titanium is beginning to absorb hydrogen and is forming hydride more than 250 ℃, fiercely absorb hydrogen in the time of 400 ℃ and form solid solution, but the solubility of hydrogen in titanium reduces when high temperature.The existence of hydrogen in titanium is the main cause that reduces the toughness of metal and form pore.
Know from above-mentioned analysis, when the pipeline (for example non-ferrous metal pipelines such as titanium alloy pipeline, stainless steel) that these non-ferrous metals are made welds, oxidation very easily occurs,, have a strong impact on welding quality by problems such as air pollutions.Traditional interior protection process for no matter pipeline how long caliber is much; all adopt the homogeneous tube argon-filled protection; so not only to waste a large amount of argon gas; and need the long time just can finish the displacement of pipe interior air; simultaneously; the displacement situation is fully with welder's experience, so the protection difficult quality is guaranteed in the weld seam.
Summary of the invention
The utility model is intended to address the aforementioned drawbacks, and protective device in a kind of non-ferrous metal pipeline welding is provided.The utility model can be saved protective gas, accelerates speed of welding, guarantees welding quality.
The utility model is achieved in that protective device in a kind of non-ferrous metal pipeline welding; it is used for the welding of pipeline counterpart; it comprises that a pair of diameter is not less than the end plates of internal diameter of the pipeline; it is the draw ring of stay cord is arranged and relatively to place in the pipeline opening with the side of no draw ring that one side of two end plates respectively carries, and is provided with pore in the middle of one of them end plates.
Protective device in the welding of described non-ferrous metal pipeline, described end plates comprise two link together by a rubber slab and two parts that the steel clamping plate are formed, described these clamping plate and rubber slab are fixed together with one heart.
Protective device in the described non-ferrous metal pipeline welding, described clamping plate are annular.
Protective device in the described non-ferrous metal pipeline welding, described rubber slab diameter is greater than internal diameter of the pipeline.
The utility model has to exceed and need not to fill protective gas in full section, therefore improves the purity of pipe interior argon replaces fast, the interior protection requirement when reaching welding; Effectively reduce the scope of argon filling in the pipeline, reduce the argon gas consumption and improve the welding economy; Effectively reduce the argon replaces time, improve pipeline welding efficient; Making material of the present utility model is comparatively common, easy to make; The utility model is easy to carry, easy operating.
Description of drawings
Below, further specify the specific embodiment of the present utility model in conjunction with the accompanying drawings:
Fig. 1 is the utility model user mode schematic diagram;
Fig. 2 is the end plates block diagram of embodiment 1;
Fig. 3 is the end plates block diagram of embodiment 2.
The specific embodiment
As depicted in figs. 1 and 2: protective device in a kind of non-ferrous metal pipeline welding; it is used for the welding of pipeline 1 counterpart; it comprises that a pair of diameter is not less than the end plates 2 of pipeline 1 internal diameter; it is the draw ring 5 of stay cord 3 is arranged and relatively to place in 1 mouthful in the pipeline with the side of no draw ring that one side of two end plates 2 respectively carries, and is provided with pores 6 in the middle of one of them end plates 2.
As embodiment 1 of the present utility model, described end plates 2 comprise two link together by a rubber slab 21 and two parts that steel clamping plate 22 are formed, described these steel clamping plate 22 and rubber slab 21 are fixed together with one heart.Described rubber slab 21 diameters are greater than pipeline 1 internal diameter 1-4cm (referring to Fig. 2).
As shown in Figure 3, embodiment 2 of the present utility model, in order to alleviate weight of the present utility model so that carry, described steel clamping plate 22 are annular.
Claims (4)
1. protective device in a non-ferrous metal pipeline welds; it is used for the welding of pipeline counterpart; it is characterized in that; it comprises that a pair of diameter is not less than the end plates of internal diameter of the pipeline; it is the draw ring of stay cord is arranged and relatively to place in the pipeline opening with the side of no draw ring that one side of two end plates respectively carries, and is provided with pore in the middle of one of them end plates.
2. protective device in the non-ferrous metal pipeline welding according to claim 1; it is characterized in that; described end plates comprise two link together by a round rubber plate and two parts that the circular steel clamping plate are formed, described these clamping plate and rubber slab are fixed together with one heart.
3. according to protective device in the non-ferrous metal pipeline welding of claim 2, it is characterized in that described clamping plate are annular.
4. protective device in the non-ferrous metal pipeline welding according to claim 2 is characterized in that described rubber slab diameter is greater than internal diameter of the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200735303U CN201685034U (en) | 2009-06-08 | 2009-06-08 | Internal protective device for welding of non-ferrous metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200735303U CN201685034U (en) | 2009-06-08 | 2009-06-08 | Internal protective device for welding of non-ferrous metal pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201685034U true CN201685034U (en) | 2010-12-29 |
Family
ID=43373323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200735303U Expired - Lifetime CN201685034U (en) | 2009-06-08 | 2009-06-08 | Internal protective device for welding of non-ferrous metal pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201685034U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386562A (en) * | 2012-05-10 | 2013-11-13 | 五冶集团上海有限公司 | Pipeline protection and protective gas saving dual-purpose device for pipeline hole opening and welding |
| CN103480949A (en) * | 2012-06-07 | 2014-01-01 | 株式会社小松制作所 | Method and device for manufacturing oil storage tank |
| CN105618901A (en) * | 2016-03-02 | 2016-06-01 | 平高集团有限公司 | Left baffle for pipeline welding and gas protection device and welding tool |
-
2009
- 2009-06-08 CN CN2009200735303U patent/CN201685034U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386562A (en) * | 2012-05-10 | 2013-11-13 | 五冶集团上海有限公司 | Pipeline protection and protective gas saving dual-purpose device for pipeline hole opening and welding |
| CN103480949A (en) * | 2012-06-07 | 2014-01-01 | 株式会社小松制作所 | Method and device for manufacturing oil storage tank |
| CN103480949B (en) * | 2012-06-07 | 2015-10-07 | 株式会社小松制作所 | The manufacture method of fuel reserve tank and the manufacturing installation of fuel reserve tank |
| CN105618901A (en) * | 2016-03-02 | 2016-06-01 | 平高集团有限公司 | Left baffle for pipeline welding and gas protection device and welding tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MCC5 GROUP CORPORATION LIMITED (SHANGHAI) Free format text: FORMER NAME: SHANGHAI WUYE CONSTRUCTION OF ZHONGYE CHENGGONG CO.LTD |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201900 Shanghai city Baoshan District Tieli Road No. 2501 Patentee after: MCC5 Group Corporation Limited (Shanghai) Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2501 Patentee before: Shanghai Wuye Construction Of Zhongye Chenggong Co.Ltd |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |