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Narrow gap and deep groove welding head

A welding head and deep bevel technology, applied in welding equipment, welding accessories, welding connection methods, etc., can solve problems such as difficult to complete welding work, insufficient gas protection ability of welding head, and difficulty in ensuring welding safety of nuclear power products, etc. Achieve sufficient protection, flexible and sufficient gas protection, and good protection effect

Active Publication Date: 2014-04-02
HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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Problems solved by technology

According to the manufacturing technical requirements of nuclear power products, the structure and function of existing equipment cannot fully meet the requirements of nuclear power products, especially the welding head is difficult to meet the welding requirements, such as the welding head disclosed in the Chinese patent application number CN201210448162.2 , it is difficult to complete the welding work for workpieces with narrow gaps and deep grooves; the welding head disclosed in the Chinese patent with the application number CN201080062360.4 is also difficult to complete the welding work for nuclear power equipment with narrow gaps, and the gas protection of the welding head The ability is still insufficient to ensure the welding safety of nuclear power products. The welding of shell parts of nuclear power products must have a unique shape and structure to penetrate into the gap. At the same time, it also needs strong cooling capacity and sufficient gas protection capacity. and sufficient reliability and stability

Method used

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  • Narrow gap and deep groove welding head

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Embodiment Construction

[0061] The present invention will be described in detail below in conjunction with the accompanying drawings, and the features and advantages of the present invention will become clearer and clearer along with these descriptions.

[0062] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0063] In a preferred embodiment of the present invention, such as figure 1 As shown, a narrow gap deep groove welding head is provided, which includes:

[0064] Welding head main body 1, primary shielding gas lens, tungsten electrode system 3, two secondary gas shields 2 and two secondary shielding gas lenses connected to the bottom thereof. Among them, the main ...

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Abstract

The invention discloses a narrow gap and deep groove welding head. The welding head comprises a hollow tabular welding head shell main body which is thin and long and is suitable for stretching into a narrow and deep groove gap for welding; the welding head is further provided with double gas protection systems, wherein the position of a secondary gas protection system is adjustable so that the surface of a melting pool can be fully protected and the welding quality is ensured; a protected gas lens is connected outside the air outlets of the double gas protection systems so that protected gas can be stably and evenly sprayed out, the surface of the melting pool is fully protected, and the welding quality is increased; a compulsory water cooling system is arranged, then a tungsten electrode fixing device is compulsorily water-cooled, and cooling water circularly flows so that a tungsten electrode can be fully cooled.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a narrow gap deep groove welding head. Background technique [0002] At present, narrow-gap deep-groove welding machine technology is mainly used in the manufacture of thick-walled products such as nuclear power plants, boilers, and petrochemical containers. The high-standard quality requirements for the manufacture of nuclear power products, especially how to weld pump casing products are technical problems in the industry. According to the manufacturing technical requirements of nuclear power products, the structure and function of existing equipment cannot fully meet the requirements of nuclear power products, especially the welding head is difficult to meet the welding requirements, such as the welding head disclosed in the Chinese patent application number CN201210448162.2 , it is difficult to complete the welding work for workpieces with narrow gaps and deep grooves; the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/167B23K9/32
CPCB23K9/02B23K9/164B23K9/167B23K9/323
Inventor 蒋海峰沈诗颂王枫姚明慧李向国周俊杰
Owner HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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