Welding stainless steel

Welding is a fabrication process that joins materials, mostly metals, by using high heat to melt the parts together and allowing them to cool, causing fusion. It is a widely used technique in the fabrication of equipment such as tubes or heat exchangers.

Latest welding news

Below you can find the latest newsitems that involve the topic of welding.

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Sinopec and Jiangsu launch a demonstration in China

Sinopec Jiangsu Oil Construction Engineering Co., Ltd. has recently launched a large-scale automatic welding equipment demonstration in Shaobo, YangZhou, Jiangsu Province, China. Sinopec Petroleum Engineering...

Castolin Eutectic launches EnDOtec® DO*6070N

Castolin Eutectic has launched EnDOtec® DO*6070N, a new welding wire that enables a long lifetime for components that need to withstand extreme temperatures (800...

ESAB launches Renegade VOLT™ ES 200i MMA/TIG battery

DEWALT® FLEXVOLT® 12 Ah batteries, Renegade VOLT™ ES 200i MMA/TIG battery-powered welding system offers an MMA output and TIG output battery power.

Tenaris celebrates 3 decades of excellence in Hickman

Tenaris is celebrating the 30th anniversary of its welded pipe mill in Hickman, Arkansas, and the restart of its Blytheville facility.

EWM expands its Picotig series with Picotig 220 puls DC

EWM expands its Picotig series with a new model: the Picotig 220 puls DC. The welding machine impresses with its robust, lightweight design.

Polysoude welding solutions

Polysoude offers an extensive product range to cater to the diverse joining needs. Closed orbital welding heads are utilised.

Xiris releases Pre-Weld Inspection for HF Tube Mills

Xiris Automation has released its Pre-Weld Inspection system for HF Tube Mills. The system is able to measure and track the position/temperatures of tube

WF 25i Dual: A perfect partner for Fronius TPS/i

With the touch of a button, welders can switch to another filler metal or wire diameter thanks to the Fronius WF 25i Dual.

Schunk uses BUMAX DX 129 for ultrasonic welding

Schunk Sonosystems decides to use BUMAX DX 129 screws for all its ultrasonic welding flexure sonotrode products to further improve quality and reliability.

ESAB® features automated welding, software applications

ESAB® will feature static and live demonstrations of its full portfolio of manual and automated welding and cutting equipment software applications.

Stainless steel is a popular material in various industries due to its corrosion resistance, durability, and aesthetic appeal. Here are some key points to consider when welding stainless steel:

Choose the appropriate welding process: There are several welding processes suitable for stainless steel, including Tungsten Inert Gas (TIG) welding, Metal Inert Gas (MIG) welding, and Stick welding (Shielded Metal Arc Welding). TIG welding is often preferred for stainless steel due to its precision and ability to produce high-quality welds.

Prepare the materials: Before welding, it’s important to clean the stainless steel surfaces to remove any contaminants, such as oil, grease, or dirt. Use a stainless steel wire brush or a dedicated solvent to clean the area.

Select the appropriate filler material: When welding stainless steel, it’s generally recommended to use a filler metal that matches or is compatible with the base metal. Commonly used filler materials for stainless steel welding include austenitic stainless steel filler rods or wires, such as ER308, ER309, or ER316.

Set the welding parameters: The welding parameters, such as current, voltage, travel speed, and shielding gas flow rate, will depend on the thickness of the stainless steel and the specific welding process being used.

Ensure proper shielding gas: Stainless steel welding typically requires the use of an inert gas, such as argon or a mixture of argon and helium, to create a protective atmosphere around the weld and prevent oxidation. The shielding gas should be supplied continuously and cover the weld pool adequately.

Maintain good joint fit-up and control heat input: Stainless steel has a relatively low thermal conductivity compared to other metals, so it’s essential to control the heat input during welding. Proper joint fit-up, including gap and root opening, helps control distortion and ensures proper fusion.

Post-weld treatment: Stainless steel welds may require post-weld treatment to restore corrosion resistance. This can involve processes such as passivation or pickling, which remove any oxides or contaminants from the welded area. The specific post-weld treatment will depend on the application and the stainless steel grade used.

It’s important to note that welding stainless steel can be complex, and there may be additional considerations depending on the specific application, grade of stainless steel, and welding codes and standards. If you’re not experienced in welding stainless steel, it’s advisable to consult with a professional welder or seek training to ensure proper techniques and safety precautions are followed.