CN217122051U

CN217122051U - Contact nozzle for submerged arc welding

Info

Publication number: CN217122051U
Application number: CN202220771509.6U
Authority: CN
Inventors: 李俊峰; 赵婧; 秦晓亮; 赵永远; 李风平; 冯耀辉
Original assignee: Henan Huadian Jinyuan Piping Co ltd
Current assignee: Henan Huadian Jinyuan Piping Co ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-08-05
Anticipated expiration: 2032-04-02

Abstract

The utility model discloses a contact tip for submerged arc welding, including working section and centre bore, the working section has first section and second section, the diameter of second section is greater than the diameter of first section, the centre bore is established in the working section, and along working section length direction distributes, the centre bore includes first centre bore and second centre bore, the diameter of second centre bore is greater than the diameter of first centre bore, first centre bore with the second centre bore is connected, first centre bore is close to first section, the second centre bore is close to the second section. According to the utility model discloses a contact tube for submerged arc welding can improve the utilization ratio of contact tube, reduces the loss of contact tube, reduce the cost.

Description

Contact nozzle for submerged arc welding

Technical Field

The utility model relates to the field of welding technique, in particular to a contact tube for submerged arc welding.

Background

With the capacity of modern thermal generator sets becoming larger and the parameters becoming higher and higher, the wall thickness of pipelines is also increased correspondingly. In the prior art, a welding method of automatic welding is generally adopted. In the automatic welding process, a contact tip is needed for guiding and influencing the electric conduction and the heat conduction of the welding wire. In the welding process, welding wires with different specifications are usually needed for welding, and the matched contact tip needs to be replaced when the welding wires are replaced, so that time and labor are wasted; meanwhile, the contact tube is easy to wear, and the contact tube cannot be used after being worn, so that waste is serious.

Patent No. CN105328312A proposes a contact tube, in which a blind hole is provided at the center of the right side of the working section of the contact tube, a connection sleeve is fixed in the blind hole by clamping, a through hole communicated with the groove is provided at the left side of the blind hole, and a cover body for fixing the connection sleeve is fixed at the right side of the blind hole by clamping the opening end. However, the center hole of the contact tip is only one size, and the welding wire cannot work with welding wires of different sizes.

Disclosure of Invention

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the embodiment of the utility model provides a contact tip for submerged arc welding is proposed, this contact tip for submerged arc welding can improve the utilization ratio of contact tip, reduces the loss of contact tip, reduces the cost.

According to the utility model discloses a contact tube for submerged arc welding, including working section and centre bore.

The working section has a first section and a second section, the second section having a diameter greater than the diameter of the first section.

The center hole is arranged in the working section and distributed along the length direction of the working section, the center hole comprises a first center hole and a second center hole, the diameter of the second center hole is larger than that of the first center hole, the first center hole is connected with the second center hole, the first center hole is close to the first section, and the second center hole is close to the second section.

In some embodiments, the length of the working length is 90-130 mm.

In some embodiments, the first central aperture has a length of 30-50 millimeters and the second central aperture has a length of 60-80 millimeters.

In some embodiments, the contact tip is a chromium zirconium copper material.

In some embodiments, the second segment end is provided with a flange.

The utility model discloses the beneficial effect who has does:

1. the utility model discloses a contact tube for submerged arc welding has first centre bore and second centre bore, can amputate first section unnecessary part after wearing and tearing, directly changes the welding wire of different specifications on the basis of not changing contact tube, and the save time cost improves production efficiency.

2. The length of the working section is longer than that of the existing contact tube, so that the contact tube is more wear-resistant, the utilization rate of the contact tube is improved, and the cost is saved.

Drawings

FIG. 1 is a front view of a contact tip for submerged arc welding according to an embodiment of the present invention;

FIG. 2 is a side view of a contact tip for submerged arc welding according to an embodiment of the present invention;

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model discloses a contact tip for submerged arc welding includes: a working section 1 and a central bore 2.

Specifically, as shown in fig. 1 and 2, the working segment 1 includes a first segment 11 and a second segment 12, the first segment 11 and the second segment 12 are both cylindrical, and the diameter of the second segment 12 is larger than that of the first segment 11. The working section 1 is internally provided with a central hole 2, the central hole 2 and the working section 1 are distributed coaxially, and the central hole 2 comprises a first central hole 21 and a second central hole 22. The length of the working section 1 is 110 mm and the outer diameter is 16 mm. The first central hole has a length of 40 mm and a diameter of 2.6 mm, and the second central hole has a length of 70 mm and a diameter of 4.2 mm. It is understood that in other embodiments, the first and second central apertures may be 1.6 millimeters, 3.2 millimeters, etc. in diameter.

The rear end of the second section is provided with a flange which is used for being connected with welding equipment.

According to the utility model discloses a contact tip for submerged arc welding, at first by first centre bore 21 collocation 2.5 welding wire because the contact tip is used in end department, consequently can wear out first section 11 earlier, can lead to first centre bore 21 aperture increase because of wearing and tearing after the contact tip uses a period, excises first section 11 this moment, and remaining part second centre bore 22 can arrange 4.0 welding wires and use.

The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and the words are not intended to have a special meaning unless otherwise stated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments, but such modifications or substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A contact tip for submerged arc welding, comprising:

a working section having a first section and a second section, the second section having a diameter greater than the diameter of the first section;

the center hole is formed in the working section and distributed along the length direction of the working section, the center hole comprises a first center hole and a second center hole, the diameter of the second center hole is larger than that of the first center hole, the first center hole is connected with the second center hole, the first center hole is close to the first section, and the second center hole is close to the second section.

2. The contact tip for submerged arc welding of claim 1, wherein the length of the working section is 90-130 mm.

3. The contact tip for submerged arc welding according to claim 1, characterized in that the length of the first central hole is 30-50 mm, and the length of the second central hole is 60-80 mm.

4. The contact tip for submerged arc welding of claim 1, wherein the contact tip is a chromium zirconium copper material.

5. The contact tip for submerged arc welding of claim 1, wherein the second section end is provided with a flange.