CN215145554U - Titanium and titanium alloy welding are with argon arc welding nozzle protection device - Google Patents
Titanium and titanium alloy welding are with argon arc welding nozzle protection device Download PDFInfo
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- CN215145554U CN215145554U CN202120671661.2U CN202120671661U CN215145554U CN 215145554 U CN215145554 U CN 215145554U CN 202120671661 U CN202120671661 U CN 202120671661U CN 215145554 U CN215145554 U CN 215145554U
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Abstract
The utility model provides an argon arc welding nozzle protection device for titanium and titanium alloy welding, which comprises a protection cover sleeved outside a welding nozzle, an auxiliary gas pipe and a wire mesh arranged inside the protection cover; the protective cover is an annular cover with a mounting hole in the center, and the inner diameter of the mounting hole is matched with the outer diameter of the argon arc welding nozzle; the auxiliary gas pipe consists of a gas inlet pipe and a gas outlet pipe which are communicated with each other, the gas outlet pipe is a circular pipe arranged in the annular cover, a plurality of gas outlet holes are uniformly distributed on the gas outlet pipe, and the gas inlet pipe penetrates through the side wall of the protective cover and is connected with an argon gas source pipeline through a hose; and a plurality of layers of silk screens are filled in the annular cover and above the air outlet pipe. The utility model has the advantages of being simple in structure and convenient in operation, stable performance use with the welding tip cooperation, produce during the welding stable, tight argon protection air current and completely cut off the air, welding quality is showing and is improving.
Description
Technical Field
The utility model relates to a metal welding technical field, in particular to titanium and titanium alloy welding are with argon arc welding tip protection device.
Background
Titanium is an important structural metal developed in the 50 s of the 20 th century, and titanium alloys are widely used in various fields due to the advantages of high strength, good corrosion resistance, high heat resistance and the like. The experiment proves that the water-soluble polymer has the advantages of high water solubility,
in an oxidizing, neutral and chloride ion medium, the corrosion resistance of titanium and titanium alloy is superior to that of stainless steel, sometimes even more than 10 times of that of 1Cr18Ni9Ti stainless steel, and the titanium and titanium alloy are successfully applied to the fields of shipbuilding, seawater desalination, ocean engineering, aerospace engineering, chemical engineering, metallurgy, electroplating, papermaking, pesticides and the like.
However, titanium and titanium alloys themselves have high chemical activity and easily absorb air to cause embrittlement, and titanium can form brittle compounds with various metal elements and react with organic substances to form brittle compounds to embrittle joints. Because titanium and titanium alloys have strong affinity to gases such as oxygen, nitrogen and hydrogen in the air, and when welding, if the titanium and titanium alloys react with the gases, the toughness of a welding seam is reduced and the brittleness of the welding seam is enhanced, so that good protection measures must be taken on a welding zone to ensure that a welding pool and a heat affected zone with the temperature of over 400 ℃ are not polluted by the air.
The surface color of the welding seam and the heat affected zone determines the welding effect of the welding part. Generally, the surface after welding is silver white, golden yellow, qualified welding seam quality and no additional treatment; the surface after welding is blue, which represents that the argon protection is slightly poor, and the surface can only be used for non-important parts, but the surface color needs to be removed; the surface after welding is purple, which represents poor argon protection, and the welding can only be used for a normal-pressure container, the purple is removed, and the part which cannot be removed is repaired; the surface after welding is gray, dark gray, off-white and yellow powder, which represents that the argon protection is extremely poor and the repair is necessary. Therefore, argon shielding in the welding of titanium and titanium alloys is very important for the quality of the welded products.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned problem that prior art exists, the utility model aims to provide a simple structure, convenient operation, stable performance, can show improvement titanium and titanium alloy welding protection effect, improve welding quality's protection device.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
an argon arc welding nozzle protection device for titanium and titanium alloy welding comprises a protection cover sleeved outside a welding nozzle, an auxiliary gas pipe and a wire mesh arranged in the protection cover; the protective cover is an annular cover with a mounting hole in the center, one end of the annular cover is closed, and one side of the annular cover is open; the mounting hole penetrates through the annular cover, and the inner diameter of the mounting hole is matched with the outer diameter of the argon arc welding nozzle; the auxiliary gas pipe consists of a gas inlet pipe and a gas outlet pipe which are communicated with each other, the gas outlet pipe is a circular pipe arranged in the annular cover, a plurality of gas outlet holes are uniformly distributed on the gas outlet pipe, and the gas inlet pipe penetrates through the side wall of the protective cover and is connected with an argon gas source pipeline through a hose; and a plurality of layers of silk screens covering the air outlet pipe are also arranged in the protective cover.
The utility model discloses a further improvement lies in: the diameter of the air outlet is 0.5 mm-2 mm.
The utility model discloses a further improvement lies in: the wire mesh is a brass wire mesh of 120 mesh.
The utility model discloses a further improvement lies in: the filling thickness of the silk screen is 5 mm-20 mm.
The utility model discloses a further improvement lies in: the protective cover and the auxiliary air pipe are made of red copper.
Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:
the utility model provides a titanium and titanium alloy welding are with argon arc welding nozzle protection device, moreover, the steam generator is simple in structure, high reliability and high reliability, the back is connected with the welding nozzle to convenient operation, protection device can produce stably during the welding, tight argon gas protection air current, argon gas protection air current encircles the welding nozzle setting, make the welding point cover all the time under the argon gas protection by the cage, contactless air, thereby effectively avoid titanium and titanium alloy absorbed air and the embrittlement that produces, ensure that the welding surface is high-quality silvery white surface, welding quality is showing and is improving.
The utility model discloses in the use, the venthole blowout of establishing closely on the argon gas passes through the outlet duct, and the brass silk screen water conservancy diversion and the redistribution that form certain thickness through the superimposition again form with the unanimous, fine and close argon protection air current of protecting shield groove thickness, make the welding seam and the heat affected zone at center obtain abundant gas protection, the gas protection area when having increased the welding, effectively avoid the air to get into welding area, ensure to obtain the welding seam quality that satisfies the requirement.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic perspective view of the protective cover of the present invention;
in the figure, 1-protective cover, 2-mounting hole, 3-air inlet pipe, 4-air outlet pipe, 5-air outlet hole and 6-silk screen.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
A welding tip protection device for titanium and titanium alloy welding comprises a protection cover 1 sleeved on the outer side of a welding tip, an auxiliary gas pipe and a wire mesh 6 arranged in the protection cover 1, as shown in figure 1.
The protective cover 1 is an annular cover with a circular mounting hole 2 formed in the center as shown in fig. 1 and 2, one end of the annular cover is closed, one side of the annular cover is open, the closed end is close to the tail of the welding tip, and the open end is close to the front end of the welding tip; mounting hole 2 runs through annular cover, and the internal diameter of mounting hole 2 matches with the external diameter of argon arc welding nozzle and suits, and argon arc welding nozzle inserts in mounting hole 2, realizes fixedly. The auxiliary gas pipe comprises a circular gas outlet pipe 4 which is arranged in the annular cover and surrounds the mounting hole 2, and a gas inlet pipe 3 which is communicated with the gas outlet pipe 4, wherein the gas inlet pipe 3 penetrates through the side wall of the protective cover 1 and is connected with an argon gas source through a hose; a plurality of air outlet holes 5 are uniformly distributed on the air outlet pipe 4 in a surrounding manner, and the diameters of the air outlet holes 5 are 0.5 mm-2 mm, preferably 1 mm. Argon enters the air outlet pipe 4 through the air inlet pipe 3 and is sprayed out through a plurality of air outlet holes 5 on the pipe wall of the air outlet pipe 4 to form dense argon flow surrounding the mounting hole 2, and tight argon protection is provided for a welding position.
The protective cover 1 is also internally provided with a multi-layer silk screen 6 covering the air outlet pipe 4 and used for further guiding, dispersing and smashing the argon flow into stable and fine argon flow. The wire mesh 6 is a brass wire mesh, and experiments prove that the stability of argon flow is optimal when the specification of the brass wire mesh is 120 meshes. The filling thickness of the silk screen 6 is 5 mm-20 mm, preferably 10 mm.
Annular width L0 of safety cover 1 welds the diameter phase-match of welding nozzle with argon arc, and usually speaking, when the diameter of argon arc welding nozzle was 16mm ~18mm, L0 was 15mm ~20mm, can ensure stable argon gas protection and flow. When the diameter of the argon arc welding nozzle is increased, the annular width L0 is correspondingly increased.
The protective cover 1 and the auxiliary gas pipe are made of red copper, so that the industrial processing is easier; the wire mesh 6 adopts a brass wire mesh, the strength of brass is high, the net structure of the brass wire mesh is not easy to deform and can still keep the shape under the argon impact, and the stability of argon protective airflow is ensured.
The utility model discloses a working process does:
firstly, checking whether the vent hole and the silk screen are permeable and whether the thickness of the silk screen reaches the standard, inserting an argon arc welding nozzle into a mounting hole of a protective cover after the thickness of the silk screen reaches the standard, enabling the welding nozzle to be stably connected with the protective cover, connecting an air inlet pipe with an argon gas source pipeline, opening an argon gas valve and starting to convey argon gas; placing argon arc welding near a welding point, introducing argon to expel air, and then igniting to weld.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (5)
1. The utility model provides a titanium and titanium alloy welding are with argon arc welding nozzle protection device which characterized in that: comprises a protective cover (1) sleeved outside a welding nozzle, and an auxiliary gas pipe and a wire mesh (6) arranged in the protective cover (1); the protective cover (1) is an annular cover with a mounting hole (2) in the center, one end of the annular cover is closed, and one side of the annular cover is open; the mounting hole (2) penetrates through the annular cover, and the inner diameter of the mounting hole is matched with the outer diameter of the argon arc welding nozzle; the auxiliary gas pipe consists of a gas inlet pipe (3) and a gas outlet pipe (4) which are communicated with each other, the gas outlet pipe (4) is a round pipe arranged in the annular cover, a plurality of gas outlet holes (5) are uniformly distributed on the gas outlet pipe (4), and the gas inlet pipe (3) penetrates through the side wall of the protective cover (1) and then is connected with an argon gas source pipeline through a hose; the protective cover (1) is also internally provided with a multilayer silk screen (6) for covering the air outlet pipe (4).
2. The argon arc welding nozzle protection device for titanium and titanium alloy welding according to claim 1, characterized in that: the diameter of the air outlet (5) is 0.5 mm-2 mm.
3. The argon arc welding nozzle protection device for titanium and titanium alloy welding according to claim 1, characterized in that: the wire mesh (6) is a brass wire mesh with 120 meshes.
4. The argon arc welding nozzle protection device for titanium and titanium alloy welding according to claim 3, characterized in that: the filling thickness of the silk screen (6) is 5 mm-20 mm.
5. The argon arc welding nozzle protection device for titanium and titanium alloy welding according to claim 1, characterized in that: the protective cover (1) and the auxiliary air pipe are made of red copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120671661.2U CN215145554U (en) | 2021-04-01 | 2021-04-01 | Titanium and titanium alloy welding are with argon arc welding nozzle protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120671661.2U CN215145554U (en) | 2021-04-01 | 2021-04-01 | Titanium and titanium alloy welding are with argon arc welding nozzle protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215145554U true CN215145554U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120671661.2U Active CN215145554U (en) | 2021-04-01 | 2021-04-01 | Titanium and titanium alloy welding are with argon arc welding nozzle protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215145554U (en) |
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2021
- 2021-04-01 CN CN202120671661.2U patent/CN215145554U/en active Active
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