CN116135418A - Protection device for welding special material small-diameter pipe - Google Patents
Protection device for welding special material small-diameter pipe Download PDFInfo
- Publication number
- CN116135418A CN116135418A CN202111362530.7A CN202111362530A CN116135418A CN 116135418 A CN116135418 A CN 116135418A CN 202111362530 A CN202111362530 A CN 202111362530A CN 116135418 A CN116135418 A CN 116135418A
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- Prior art keywords
- welding
- special material
- shell
- air duct
- diameter pipes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention belongs to a protection device, and particularly relates to a protection device for welding special material small-diameter pipes. A protection device for welding special material small-diameter pipes comprises a shell, wherein an air duct is arranged in the shell, and a screen is arranged on a channel of the air duct. The invention has the remarkable effects that: the welding seam is completely arranged in the shell, so that shielding gas thinned by the screen mesh is uniformly led to the welding seam, a molten pool, uncooled welding seam and a heat affected zone are fully protected during welding, and the fixture can effectively ensure the welding quality of special products through verification of finished special products.
Description
Technical Field
The invention belongs to a protection device, and particularly relates to a protection device for welding special material small-diameter pipes.
Background
Compared with common carbon steel and stainless steel, the material has certain special other properties, such as titanium alloy with great specific strength and good toughness, and has wide application in aviation and aerospace industry, and titanium alloy with good corrosion resistance, and in oxidizing, neutral and chloridion-containing media, the corrosion resistance is superior to that of stainless steel, sometimes even 10 times that of 1Cr18Ni19Ti stainless steel, so that the material has successful application in the fields of chemical industry, metallurgy, electroplating, shipbuilding and the like. While the strength and toughness of zirconium are practically not developed under the neutron irradiationChange and thermal neutron absorption cross section is only 0.18×10 5 b, the zirconium alloy has huge application in the nuclear power field, and in addition, the zirconium alloy has acid, alkali and liquid metal corrosion resistance, and in certain corrosion media, even more than metals such as niobium, titanium and the like, so that the zirconium alloy can be applied to corrosion environments where some titanium alloys are not adequate.
However, the special materials are generally very active, titanium can form a compact oxide film with oxygen at normal temperature to keep high stability and corrosion resistance, but the oxide film formed above 540 ℃ is not compact, can react with oxygen, nitrogen and hydrogen rapidly at high temperature, and has the disadvantages of plastic degradation and severe embrittlement. Zirconium is also sensitive to gas reaction at high temperature, and the corrosion resistance of the weld seam is reduced and the weld seam becomes brittle after being polluted by gas.
Therefore, when special products such as titanium, zirconium and the like are welded, the welding seam is required to be reliably protected. The welding line of the main body of the special container is generally similar to a straight line due to the fact that the diameter of the product is large, and the annular longitudinal joint is close to the straight line, so that the protection tool can be well attached to the product to achieve the protection effect. However, the small-diameter pipe is difficult to carry out welding seam protection through a similar side protection tool because of the too small diameter.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a protection device for welding special material small-diameter pipes.
The invention is realized in the following way: a protection device for welding special material small-diameter pipes comprises a shell, wherein an air duct is arranged in the shell, and a screen is arranged on a channel of the air duct.
The protection device for welding the special material small-diameter pipe is characterized in that the shell is a cylindrical part, and a groove is formed in the top of the shell.
The protection device for welding special material small diameter pipe comprises a casing with a through hole on the side wall of the groove penetrating through the side wall of the casing for passing the welded part
The special material small-diameter pipe welding protection device is characterized in that the air duct extends into the groove, and the screen is arranged at the tail end of the air duct extending into the groove.
The protection device for welding the special material small-diameter pipe is characterized in that the groove is rectangular.
The protection device for welding the special material small-diameter pipe comprises a copper pipe as the air guide pipe
The protection device for welding the special material small-diameter pipe comprises a protective sleeve, wherein the tail end of the air duct is uniformly perforated
The protection device for welding the special material small-diameter pipe comprises a screen, wherein the punching positions of the tail end of the air duct are wrapped by the screen
The protection device for welding the special material small-diameter pipe is characterized in that the free end of the air duct is communicated with a protection air source.
The invention has the remarkable effects that: the welding seam is completely arranged in the shell, so that shielding gas thinned by the screen mesh is uniformly led to the welding seam, a molten pool, uncooled welding seam and a heat affected zone are fully protected during welding, and the fixture can effectively ensure the welding quality of special products through verification of finished special products.
Drawings
Figure 1 is a diagram of a special material small-diameter welding protection device,
fig. 2 is an AA-facing view of fig. 1.
Fig. 3 is a top view of fig. 1.
Wherein: 1. the shell, 2, the air duct, 3, the screen cloth.
Detailed Description
The invention is further described with reference to fig. 1.
As shown in the drawing, when special small-diameter pipes are welded, the small-diameter pipes are perforated at two ends of the shell, welding seams are completely arranged in the shell, a to-be-welded area can be uniformly protected in shielding gas, welding is performed through an opening above the shell when a welder welds, and welding seams are completed by rotating the small-diameter pipes. The weld pool, the uncooled weld joint, the heat affected zone, the high temperature zone on the back of the weld joint and the like can be protected in the welding process, and the welding quality is ensured.
Claims (9)
1. A protection device for welding special material small-diameter pipes is characterized in that: comprises a shell (1), an air duct (2) is arranged in the shell (1), and a screen (3) is arranged on a channel of the air duct (2).
2. A protector for welding small diameter pipes of special material as set forth in claim 1, wherein: the shell (1) is a cylindrical part, and a groove is formed in the top of the shell (1).
3. A protector for welding small diameter pipes of special material as set forth in claim 2, wherein: the shell (1) is provided with a through hole, the through hole is arranged on the side wall of the groove and penetrates through the side wall of the shell (1), and the through hole is used for a welded piece to pass through.
4. A protector for welding small diameter pipes of special material as set forth in claim 3, wherein: the air duct (2) extends into the groove, and the screen (3) is arranged at the tail end of the air duct (2) extending into the groove.
5. A protector for welding small diameter pipes of special material as set forth in claim 4, wherein: the groove is rectangular.
6. A protector for welding small diameter pipes of special material as set forth in claim 5, wherein: the air duct (2) is a copper pipe.
7. A protector for welding small diameter pipes of special material as set forth in claim 6, wherein: and the tail end of the air duct (2) is uniformly perforated.
8. A protector for welding small diameter pipes of special material as set forth in claim 7, wherein: the punching positions at the tail ends of the air ducts (2) are wrapped by the screen (3).
9. A protector for welding small diameter pipes of special material as set forth in claim 8, wherein: the free end of the air duct (2) is communicated with a protection air source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111362530.7A CN116135418A (en) | 2021-11-17 | 2021-11-17 | Protection device for welding special material small-diameter pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111362530.7A CN116135418A (en) | 2021-11-17 | 2021-11-17 | Protection device for welding special material small-diameter pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116135418A true CN116135418A (en) | 2023-05-19 |
Family
ID=86332967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111362530.7A Pending CN116135418A (en) | 2021-11-17 | 2021-11-17 | Protection device for welding special material small-diameter pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116135418A (en) |
-
2021
- 2021-11-17 CN CN202111362530.7A patent/CN116135418A/en active Pending
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |