A fully water-cooled miniature deep and small inner hole plasma spray welding torch
A plasma and full water-cooling technology, applied in plasma welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of water leakage of plasma spray welding torch, easy heating of cathode, damage of nozzle, etc., achieve compact and reasonable structure, ensure welding quality, reduce The effect of the number of joints
Active Publication Date: 2019-07-02
DONGFANG TURBINE CO LTD
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Problems solved by technology
However, currently the smallest small inner hole deep hole plasma spray gun (patent CN200810147856.6) can only spray weld workpieces with inner hole diameter ≥ 36mm, and for parts with deep inner hole diameter < 36mm, it cannot be welded, and its cathode 1. The cooling effect of the anode is poor, and it is impossible to continuously weld at high temperature for a long time; due to poor heat dissipation of the plasma spray gun, the cathode is easy to heat, the nozzle is damaged due to poor water cooling, and the sealing ring is not tightly sealed at high temperature, resulting in the plasma spray gun. Water Leakage
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[0026] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0027] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0028] Such as Figure 1 to Figure 3 As shown, a kind of fully water-cooled miniature deep small inner hole plasma spray gun of the present embodiment comprises an anode gun head 1, and a cathode gun head 3 and a nozzle 6 embedded in the anode gun head 1, and the anode gun head 1 An insulating sleeve 2 is provided between the cathode gun head 3, and there is a water cooling chamber b2 between the anode gun head 1 and the nozzle 6, and an anode cooling water inlet and outlet channel communicating with...
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Abstract
The invention discloses a miniature deep and small inner hole plasma spray welding torch, which belongs to the technical field of plasma spray welding torches. A fully water-cooled miniature deep and small inner hole plasma spray welding gun of the present invention comprises an anode gun head, a cathode gun head and a nozzle embedded in the anode gun head, and an insulating sleeve is arranged between the anode gun head and the cathode gun head , there is a water-cooling chamber between the anode gun head and the nozzle, and an anode cooling water inlet and outlet channel communicating with the water-cooling chamber is opened in the anode gun head, and an anode gun head powder feeding channel that communicates with each other is respectively opened in the anode gun head and the nozzle The gas channel and the powder feeding gas channel of the nozzle are also provided with the ion gas channel of the anode gun tip and the ion gas channel of the nozzle communicated with each other. The invention is compact and reasonable in structure and strong in practicability. The anode and cathode of the plasma spray gun can be directly water-cooled, and the heat dissipation effect is good. It can realize continuous welding of the plasma spray gun under high-temperature working conditions for a long time, and can be applied to workpieces with a diameter of <36mm. Welding of inner holes.
Description
technical field [0001] The invention relates to a miniature deep and small inner hole plasma spray welding torch, in particular to a fully water-cooled miniature deep and small inner hole plasma spray welding torch, which belongs to the technical field of plasma spray welding torches. Background technique [0002] With the advancement of technology, the requirements for corrosion resistance and wear resistance of the surface of parts are getting higher and higher. For example, the steam supplement valve of a steam turbine contains parts with an inner hole diameter of <40mm, and its inner surface needs to be clad with a layer of wear-resistant and corrosion-resistant alloy, which can be produced by plasma spray welding alloy powder technology. However, currently the smallest small inner hole deep hole plasma spray gun (patent CN200810147856.6) can only spray weld workpieces with inner hole diameter ≥ 36mm, and for parts with deep inner hole diameter < 36mm, it cannot be...
Claims
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IPC IPC(8): B23K10/02
CPCB23K10/02B23K10/027
Inventor 郭洋黄岚尹军李胜刚陈兴东黄滔刘丹裴伟平肖玉竹王洪亚
Owner DONGFANG TURBINE CO LTD