• Huaxiao Stainless steel suppliers •

how to TIG weld stainless steel？

◦ TIG Stainless Steel ◦ stainless steel suppliers ◦ TIG Stainless Steel ◦ stainless steel suppliers ◦ TIG Stainless Steel

Stainless steel, renowned for its excellent corrosion resistance and aesthetic appeal, finds wide application across various fields. Among the numerous methods for connecting stainless steel, TIG welding stands out for its high-quality welds and extensive application range. So, how can one proficiently master TIG welding techniques to ensure the quality and effectiveness of stainless steel welding? This article will reveal the key steps and precautions for TIG weld stainless steel, aiding you in effortlessly mastering this practical skill.

-Huaxiao stainless steel suppliers

Preparation——TIG weld stainless steel

Before welding, it is essential to inspect the areas of the workpiece to be welded for any oxides, grease, coatings, or other debris. Strict cleaning is necessary prior to welding to prevent poor fusion formation or even inadequate penetration, which may compromise the quality.
Prior to welding, familiarize yourself with the technical requirements of the drawings and strictly follow the construction according to the drawing requirements. After positioning the welding parts according to the dimensions of the drawing, use process braces or reinforcements to prevent or minimize welding deformation during the welding process, ensuring product quality.
Before welding, check if the tungsten electrode used matches the current welding plate thickness. Otherwise, replace it with a suitable tungsten electrode.
Before performing TIG weld stainless steel, the length of the tungsten electrode extending from the nozzle is generally taken as 1 to 2 times the diameter of the tungsten electrode.
Before welding, open the valve of the argon gas cylinder, select the appropriate welding flow rate of argon gas, current, and stainless steel welding wire. Specific values are provided in the table below.

Plate thickness	Welding wire diameter	Tungsten electrode diameter	Tungsten electrode taper	Welding current	Maximum gas flow rate
0.4	1.0	1.0-1.6	12	5-20	2.5
0.6	1.0	1.0-1.6	20	15-30	2.5
1.0	1.2	1.0-1.6	25	25-50	3
1.5	1.2	1.0-1.6	30	50-75	4
2.5	1.5	1.6-2.4	35	65-96	6
3.0	1.5	1.6-2.4	45	90-120	7

-Huaxiao stainless steel suppliers

The Process of TIG Weld Stainless Steel

Adjust electrode and wire distance: The extension length of the tungsten electrode from the nozzle is generally set to 1-2 times the diameter of the tungsten electrode, and the distance from the workpiece (arc length) should generally not exceed 1.5 times the diameter of the tungsten electrode.
Control welding speed and angle: Maintain a stable welding speed, approximately 250-300 millimeters per minute; the angle between the welding wire and the workpiece is 10 degrees, and the angle between the tungsten electrode welding gun and the workpiece is 75 degrees.

Stable posture and wire feeding: During the welding process, maintain a stable posture, and the welding wire should be fed into the molten pool at a constant speed.
Monitor weld quality: Ensure uniform width of the weld seam, consistent height, and a visually appealing appearance.
Pay attention to environmental factors: Avoid using fans during welding to prevent the protective gas from being dispersed; ensure the fan inside the welding machine operates normally.
Continuously monitor welding quality: Continuously monitor welding quality during the welding process to avoid defects such as weld beads or incomplete penetration.

-Huaxiao stainless steel suppliers

Post TIG weld stainless steel procedures

Remove welding jigs: After the welded parts have cooled down, remove the welding jigs.
Treat welding scars: Grind down welding scars to ensure a smooth surface.
Clean spatter: Remove welding spatter and other debris to maintain cleanliness of the welded product.
Post-weld correction: Perform necessary post-weld corrections according to blueprint requirements to ensure product quality.
Documentation: Conduct self-inspection of products according to blueprints and process requirements, and meticulously fill out relevant documents such as daily production reports and operation cards.

conclusion

In this blog, we delve into the key steps and considerations of TIG weld stainless steel. From meticulous preparation before welding, to precise execution during operation, and meticulous handling afterward, each step reflects respect for the process and pursuit of quality. TIG weld stainless steel, as a high-quality welding method, is undeniably important in the manufacturing of stainless steel products.

TIG weld stainless steel is not just a technique, but also a commitment to quality. At Huaxiao Metal, we have been in the stainless steel export industry for many years, always dedicated to providing customers with high-quality stainless steel products. If you have any needs, please feel free to contact us, and we will be happy to serve you.