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Single-sided welding with double-sided formation is a core technique that welders must master, and it is particularly critical in the welding of pressure vessels and pipelines. It requires the welder to perform the weld from the front side of the workpiece while simultaneously producing a unifor...Read more »
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Introduction Aluminum welding requires the right filler material to ensure strong, crack-free joints and excellent corrosion resistance. Among the most widely used aluminum welding rods are E4043 and E4047, both belonging to the Al-Si (Aluminum-Silicon) alloy family. Although they are similar i...Read more »
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Choosing the right welding wire is crucial for achieving strong, clean, and efficient welds. Two of the most commonly used welding wires in steel fabrication are Solid Wire (ER70S series) and Flux Cored Wire (E71T series). While both are widely used, they differ significantly in structure, perfo...Read more »
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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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304 stainless steel (GB/T 06Cr19Ni10) is the most widely utilized type of chromium-nickel stainless steel. As a versatile material, it exhibits excellent corrosion resistance, heat resistance, low-temperature strength, and mechanical properties. It possesses good hot-working characteristics—such...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 »