Spraying nozzle for gas shield welding and using method thereof
A gas shielded welding and nozzle technology, applied in the characteristics of electrodes, welding equipment, welding accessories, etc., can solve the problems of small gas shielding range, blackening, low welding efficiency, etc., to ensure welding efficiency, reduce use costs, and improve welding. quality effect
Inactive Publication Date: 2019-04-26
福尼斯(南京)表面工程技术有限公司
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Problems solved by technology
[0004] 2. The nozzle is blocked. Due to the influence of the gas shielded welding process itself, large splashes will be generated during the welding process. Using the nozzle of the existing technology, when working for a long time because the inner diameter is too small, as time increases, the nozzle inside the nozzle The splash will accumulate more and more. When the time reaches more than 1 hour, it will affect the effect of gas protection. When it accumulates to more than 2 hours, it will be connected to the conductive tip, so that the nozzle will burn out when it touches the electrode.
[0005] 3. The service life is short. When using argon + hydrogen or argon + helium gas, the gas will compress the arc to increase the heat transfer coefficient, and the weld metal has a lot of heat, or when a larger voltage is selected for operation, because Influenced by long-term operation, when small-diameter nozzles work continuously for a long time, the temperature of the nozzle will gradually increase with the increase of time, because the melting point of copper is only 1083 degrees, and it will melt when continuous surfacing high temperature
In addition, when cleaning the splash in the nozzle, because the splash is firmly stuck to the nozzle, it needs to be knocked out by external force when cleaning. After more than 3 times, the nozzle will be deformed by cleaning and the protective effect will be deteriorated, so that it cannot be used.
[0006] 4. The surfacing welding efficiency is high and the cost is high. Because the nozzle needs to be cleaned continuously during the surfacing welding process, it is generally necessary to remove the nozzle and knock it hard with a sharp tool to make the splash fall
Therefore, the welding efficiency is low, and the frequent replacement of nozzles also reduces the economic benefits of surfacing welding
[0007] 5. The quality of surfacing is poor. In the prior art, there is a knuckle at the mouth of the nozzle to compress the gas inward, so that the gas protection range is small. After testing, the protection range is about 20mm, so that in addition to causing pores during the welding process, the surfacing metal The oxidation of the metal is also very serious. During the long-term operation of surfacing welding, the solidified liquid metal surface needs continuous gas protection. The surface of the material will be severely oxidized when the gas protection is lost, and the surface of the metal after solidification is severely oxidized. phenomenon such as blackening
Method used
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Embodiment 1
[0021] Embodiment 1: A nozzle for gas shielded welding in this embodiment, which is used in conjunction with the FRONIUS AW5000 welding torch, and includes an upper section 1, a middle section 2 and a lower section 3, the upper section 1 is a frock connected to the welding torch, and the upper section 1 It is a cylindrical structure and is provided with several gaps 4 on the periphery for connecting with the welding torch; the length of the upper part 1 is 77.98 mm, the outer diameter is 25 mm, and the inner diameter is 21 mm; the upper part 1 is provided with 6 gaps 4 and the gap 4 The length is 25mm, and the gap between the notches 4 is 1.17mm; the middle section 2 is a knuckle structure connecting the upper section 1 and the lower section 3, and the knuckle angle is 10°; the lower section 3 is a tapered structure with a trapezoidal vertical section, and the lower section 3 The outer diameter of the top is 25mm, the outer diameter of the bottom is 34mm, and the height is 42.9...
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Abstract
The invention discloses a spraying nozzle for gas shield welding. The spraying nozzle comprises an upper section portion, a middle section portion and a lower section portion. The upper section portion is provided with a tool and connected with a welding gun. The upper section portion is of a cylindrical structure, and a plurality of notches are formed in the periphery and used for being connectedwith the welding gun. The middle section portion is of a folding angle structure which connects the upper section portion with the lower section portion. The lower section portion is of a conical structure with the vertical cross section being trapezoidal. The upper section portion, the middle section portion and the lower section portion are made of red copper, and the copper content is over 99.95%. Meanwhile, the invention discloses a using method of the spraying nozzle. The spraying nozzle has good usability and heat conductivity, and is not sticked with splashed materials easily, clearingis convenient, and reusability is high.
Description
technical field [0001] The invention relates to a nozzle for welding, in particular to a nozzle for gas-shielded welding and a using method thereof. Background technique [0002] In the surfacing industry, gas shielded welding surfacing, as one of the most important welding processes, has remarkable effects in surfacing dissimilar materials, controlling dilution rate, and material physical properties. In addition, the welding efficiency of gas shielded welding and surfacing welding is very high, and the welding speed is fast. When it is guaranteed to work for a long time, the requirements for the nozzle of the welding torch are very high. Nozzles are prone to the following problems: [0003] 1. Porosity, including high melting point materials and low melting point materials. High melting point materials need to use a large current during welding to achieve good metal spreadability. Generally, swing welding is used. During the surfacing welding process, the swinging The ran...
Claims
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IPC IPC(8): B23K9/26B23K9/16B23K9/32
CPCB23K9/26B23K9/16B23K9/32B23K9/325
Inventor 孙骞石少坚杨修荣
Owner 福尼斯(南京)表面工程技术有限公司