CN204262572U - A kind of two spout argon-arc welding guns for increasing arc energy density and protected effect - Google Patents

Abstract

The utility model discloses a double-nozzle argon arc welding torch for increasing arc energy density and protection effect, comprising: a welding torch tube, a cap, an insulating sleeve, a tungsten needle clamping tube, an inner layer nozzle, an outer layer nozzle, a wiring nose, Tungsten needle, the welding torch uses argon as the shielding gas. The nozzle of the welding torch is composed of inner and outer layers. The inner layer nozzle is concentric with the tungsten needle. The outer layer nozzle is oval and has a certain corresponding relationship with the welding direction. The nozzle gas source is independent and stable. It can provide inner and outer layers of argon gas protection for the arc, and at the same time, it can have a certain thermal compression effect on the arc, which improves the arc stiffness and energy density; the end of the welding torch tube is processed into a honeycomb shape, which plays the role of gas shunting ;The length of the tungsten needle can be adjusted by the tungsten needle clamp tube, and the tungsten needle can be clamped by tightening the cap; the welding current is provided by the welding power supply, and is transmitted to the tungsten needle through the welding gun tube and the tungsten needle clamp tube through the wiring nose, the nozzle and the welding torch tube Insulation and isolation are carried out by insulating sleeves.

Description

A double nozzle argon arc welding torch for increasing arc energy density and protection effect

technical field

The invention relates to the field of welding technology, in particular to a double-nozzle argon arc welding torch for increasing arc energy density and protection effect.

Background technique

Nickel-based superalloys occupy a special and important position in the field of superalloys due to their high working temperature, stable structure, few harmful phases, and the ability to work in high temperature and stress environments. They have been widely used in the field of aerospace manufacturing. When conventional low energy density TIG or MIG welding is used, the weld metal has poor fluidity, poor protection, easy to produce welding defects such as pores, surface oxidation, and incomplete penetration, and relatively low plasticity and strength. Although high-energy beam welding methods such as electron beam, laser, and plasma arc can meet the welding requirements, they are not widely used due to the influence of welding costs and operating methods. Compared with the melting electrode welding method, the protection of the welding area by argon tungsten arc welding is simple and convenient. Realize mechanization and automation.

In addition, argon can effectively isolate the surrounding air. It does not react with metal and is insoluble in liquid metal. During argon tungsten arc welding, the arc also has the effect of automatically removing the oxide film on the surface of the workpiece, especially suitable for thin and ultra-thin plates. Welding, suitable for welding aerospace thin-walled components. Therefore, it is widely used in the welding production of aerospace parts.

Existing conventional argon arc welding torches are divided into two types: air-cooled and water-cooled. Generally, ceramic single nozzles are used for welding protection, which can meet the requirements for use in ferrous metals or occasions where welding quality is not high. Aiming at the phenomenon of poor weld seam protection and insufficient penetration depth when conventional argon arc welding torches are used to weld materials such as superalloys, the present invention proposes an argon arc welding torch with a double nozzle structure.

Contents of the invention

The technical solution of the present invention is to provide a double-nozzle argon arc welding torch for improving arc energy density and protection effect. The arc has a certain thermal compression effect, which improves the arc stiffness and energy density.

The solution of the present invention is to propose a double-nozzle argon arc welding torch for increasing arc energy density and protection effect, including: welding torch tube, cap, insulating sleeve, tungsten needle clamping tube, inner nozzle, outer nozzle, Wiring nose, tungsten needle, the welding torch uses argon as the shielding gas, the welding torch nozzle is composed of inner and outer layers, the inner layer nozzle is concentric with the tungsten needle, the outer layer nozzle is elliptical, and has a certain corresponding relationship with the welding direction; the welding torch tube end The whole part is processed into a honeycomb shape, which has the effect of gas shunting; the length of the tungsten needle can be adjusted by the tungsten needle clamp tube, and the tungsten needle can be clamped by tightening the cap; The needle clamp tube is transmitted to the tungsten needle, and the nozzle and the torch tube are insulated and isolated by the insulating sleeve.

Furthermore, the gas source of the nozzle is independent and stable, which can respectively provide inner and outer argon gas protection for the arc, and at the same time exert a certain thermal compression effect on the arc, improving the stiffness and energy density of the arc.

Compared with the prior art, the present invention has the following advantages: the gas source of the nozzle is independent and stable, which can respectively provide inner layer and outer layer argon gas protection for the arc, and at the same time exert a certain thermal compression effect on the arc, improving the arc stiffness. degree and energy density.

Description of drawings

Fig. 1 is the composition schematic diagram of argon arc torch of the present invention;

In the figure: 1-welding torch tube 2-cap 3-insulation sleeve 4-tungsten needle clip 5-inner nozzle 6-outer nozzle 7-wiring nose 8-inner ventilation tube 9-outer ventilation tube 10-tungsten needle

Figure 2 is a schematic diagram of the relative position of the nozzle of the new argon arc welding torch.

Detailed ways

The patent of the present invention will be further described below in conjunction with test examples and accompanying drawings, but the implementation of the patent of the present invention is not limited to this.

As shown in Figure 1, a double-nozzle argon arc welding torch for improving arc energy density and protection effect mainly includes: welding torch tube 1, cap 2, insulating sleeve 3, tungsten needle clamp tube 4, inner layer nozzle 5, The outer layer nozzle 6, the wiring nose 7, and the tungsten needle 10. The welding torch uses argon gas as the shielding gas. The welding torch nozzle is composed of inner and outer layers. The inner layer nozzle 5 is concentric with the tungsten needle 10. The outer layer nozzle 6 is elliptical and The welding direction has a certain corresponding relationship, and the nozzle gas source is independent and stable, which can respectively provide argon protection for the inner nozzle 5 and the outer nozzle 6 for the arc, and at the same time play a certain thermal compression effect on the arc, improving the stiffness and energy of the arc Density; the end of the welding torch tube 1 is processed into a honeycomb shape, which has the effect of gas shunting; the length of the tungsten needle 10 can be adjusted by the tungsten needle clamp tube 4, and the tungsten needle 10 can be clamped by tightening the cap 2; the welding current is controlled by the welding power supply Provided, through the welding torch tube 1 and the tungsten needle clamp tube 4 to the tungsten needle 10 through the wiring nose 7, the inner layer nozzle 5, the outer layer nozzle 6 and the welding torch tube 1 are insulated and isolated by the insulating sleeve 3.

Combined with Figure 2, the inner nozzle 5 is circular and concentric with the tungsten needle, with a diameter of d; the outer nozzle 6 is elliptical, with a short diameter Ry=1/2 (1.2~1.3)d and a long diameter Rx=2d, The distance between the inner layer nozzle 5 and the center position of the outer layer nozzle 6 is a=2~3mm.

The welding torch uses argon as a shielding gas. The nozzle of the welding torch is composed of an inner nozzle 5 and an outer nozzle 6. The argon is provided by the inner vent tube 8 and the outer vent tube 9 respectively. The length of the tungsten needle 10 can be passed through the tungsten needle clip. The tube 4 is adjusted, and the tungsten needle 10 can be clamped by tightening the cap 2. The welding current is provided by the welding power supply, and is transmitted to the tungsten needle 10 through the welding nose 7 through the welding torch tube 1 and the tungsten needle clamping tube 4 for welding.

Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can use the methods disclosed above and technical content to analyze the present invention without departing from the spirit and scope of the present invention. Possible changes and modifications are made in the technical solution. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention, which do not depart from the content of the technical solution of the present invention, all belong to the technical solution of the present invention. protected range.

Claims (4)

1. A double-nozzle argon arc welding torch for increasing arc energy density and protection effect, characterized in that it includes: welding torch tube, cap, insulating sleeve, tungsten needle clamp, inner nozzle, outer nozzle, wiring nose , Tungsten needle, the welding torch uses argon as the shielding gas, the nozzle of the welding torch is composed of inner and outer layers, the inner layer nozzle is concentric with the tungsten needle, and the outer layer nozzle has a certain corresponding relationship with the welding direction; the end of the welding torch tube is processed into a honeycomb shape; tungsten The needle length can be adjusted by the tungsten needle clamp tube, and the tungsten needle can be clamped by tightening the cap; the welding current is provided by the welding power supply, and is transmitted to the tungsten needle through the welding gun tube and the tungsten needle clamp tube through the wiring nose, between the nozzle and the welding torch tube Insulation isolation is carried out by insulating sleeves. 2 . The double-nozzle argon arc welding torch for increasing arc energy density and protection effect according to claim 1 , wherein the inner layer nozzle is circular, and the outer layer nozzle is elliptical. 3 . 3. The double-nozzle argon arc welding torch for increasing arc energy density and protection effect according to claim 2, characterized in that, the diameter of the inner nozzle is d; the short diameter of the outer nozzle Ry=1/2 ( 1.2~1.3) d, long diameter Rx=2d, distance between inner and outer nozzle center a=2~3mm. 4. The double-nozzle argon arc welding torch for increasing arc energy density and protection effect according to claim 1, characterized in that, the gas sources of the inner layer nozzle and the outer layer nozzle are independent and stable, and can respectively provide inner layer Protected with the outer layer of argon gas, it also has a certain thermal compression effect on the arc.