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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Welding applications within industries such as the Aerospace, Additive Manufacturing and F1 Racing as well as Medical, Pharmaceutical, Semiconductors and any other company that needs super clean welding joints, have a requirement of absolute cleanliness and smoothness of surfaces, ensuring each weld is mechanically stable and free from oxidation.
The new Coherent CleanWeld technology represents an integrated approach to fiber laser welding that delivers up to 80% spatter reduction, as well as minimal cracking and porosity.
Voestalpine’s Böhler Welding Diamondspark BÖHLER Ti 46 T-FD is a rutile flux-cored wire designed for joint welding of unalloyed and fine-grained steels with ISO, V charpy requirements down to -30°C.
Sciaky, Inc., a subsidiary of Phillips Service Industries, Inc. (PSI) and leading provider of metal additive manufacturing (AM) solutions, announced that a prominent Southeast Asian aerospace parts manufacturer has purchased a dual-purpose Electron Beam Additive Manufacturing (EBAM®) and EB Welding System.
Measuring the oxygen level with a Weld Purge Monitor® before, during and after welding stainless steel is crucial to achieve oxide free, zero colour welds that are metallurgically sound.
To improve performance of heat exchanger tubing in challenging urea production environments, Sandvik worked with Stamicarbon BV to develop Safurex Star, an advanced alloy for use with high pressure (HP) strippers. Oscar Johansson, Global Product Manager, Heat Exchanger & Fertilizer Tubing for Sandvik discusses.
Serimax, the Vallourec subsidiary specialized in welding, hosted several demos during September in Houston in order to convince major IOC's and Engineering companies of the welding innovation and evolution they have made this year.
Wire Arc Additive Manufacturing (WAAM) is a fast and highly efficient production process, based on well-known welding and cladding know-how, applicable to a wide range of alloys from unalloyed to high alloyed steels, nickel alloys, titanium alloys and aluminium alloys.
Industrial Specialists, a BrandSafway company and a member of the American Welding Society, is introducing BrandTech™ Precision Welding, a modular-welding system with built-in technology, which allows for one or two welding guns to be used at the same time.
The users of orbital welding equipment know the range of closed welding heads from Polysoude type MW for high productivity applications without filler wire, combining a compact and ergonomic design with high duty cycle.
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.
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