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In GMAW (gas metal arc welding) practice, vertical welding is a real challenge for many welders. If you’re not careful, the molten metal drips down, the weld bead looks like a bunch of berries stacked together, undercut appears on both sides, and porosity or slag inclusions may occur. Act...Read more »
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Introduction Proper storage of welding consumables is often overlooked — but it directly affects welding quality, safety, and cost. Incorrect storage can lead to: Moisture absorption Porosity and cracking Welding defects and rework If you want stable welding performance, storage is just as im...Read more »
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ER70S‑6 conforms to AWS A5.18. The designation breaks down as follows: ER – Electrode or filler rod 70 – Minimum tensile strength of the deposited weld metal: 70,000 psi (~490 MPa) S – Solid wire 6 – Unique chemical composition, particularly higher silicon (Si) and manganese (Mn) content The “6” ...Read more »
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The appearance of the weld matters just as much as its strength. Many of us have been there—the root pass looks great, but when it comes to the cover pass, the weld ends up dark, rough like sandpaper, or the molten metal just drips away. It’s frustrating. Welding stainless steel is differe...Read more »
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Welding stress and distortion is the stress generated in welded components due to welding. It includes internal stresses generated during the welding process and changes in shape and size caused by the welding heat process. The non-uniform temperature field during welding, and the resulting l...Read more »
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1. What is arc striking? What are the ways to start an arc? What should you pay attention to when striking an arc? The process of igniting and producing a stable arc is called arc ignition. There are two arc ignition methods: scratch arc ignition method and direct arc ignition method. For the s...Read more »
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How to Select Welding Materials for Dual-Grade Austenitic Stainless Steel —In The Case of 304/304L and 316/316L The key to selecting dual-grade stainless steel welding consumables lies in understanding their fundamental nature: they simultaneously fulfil the mechanical properties of standard gra...Read more »
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Cast iron is an early used structural material. Many parts of mechanical equipment are made of cast iron. At the same time, the repair welding of cast iron parts is still a common problem. 1 Classification of cast iron and its typical materials Cast iron is an iron-carbon alloy with carbon conten...Read more »
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In today’s world where welding technology is changing with each passing day, Shielded Metal Arc Welding (SMAW) is still active in the industrial field with its unique vitality. From steel structure welding of skyscrapers to emergency repairs of field oil pipelines, this process, which was b...Read more »
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Welding material standards are an important basis for ensuring welding quality and safety. Different countries or regions have formulated corresponding standards according to their own industrial needs. The following are several common welding material standards and their characteristics: 1. ISO ...Read more »