The invention discloses an
argon shielding device for
titanium material
welding, belongs to the field of
welding in the machinery industry, and solves technical problems of
hydrogen absorption,
oxygen absorption and the like of weld joint molten pools during
titanium material
welding. The device comprises two parts, namely, an upper gas shielding cover and a lower gas shielding tank, wherein the upper gas shielding cover structure comprises a
welding torch 1, a
hose clamp 2, a
tail drag cover 3, a vent
pipe 4 and a porous plate 5; the
argon arc welding torch can be tightly clamped by the
hose clamp 2, the
tail drag cover 3 is connected with the
hose clamp, and a plurality of small holes are formed in the bottom of the vent
pipe 4; the lower gas shielding tank structure comprises a grooved steel plate 6, a porous plate 7 and a gas inlet
pipe 8. A usage method of the device comprises steps as follows: a piece of weldment is placed between the upper gas shielding cover and the lower gas shielding tank,
argon is fed from upper and lower sides respectively, the argon
arc welding torch is fixed according to an operation procedure, the distance between the
welding torch and the workpiece is adjusted, and welding is performed after air in the shielding tank is replaced. With the adoption of the device and the method, argon flows stably, the
welding joint surface
shielding effect is very good, the structure is simple, the cost is low, the manufacturing cost is greatly saved, and production efficiency and quality are improved.