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Shielded Metal Arc Welding (SMAW), commonly known as stick welding, is one of the most versatile and widely used welding processes. It’s the first process many welders learn because equipment is simple, portable, and relatively inexpensive. If you’re just starting out, here are the b... Read more »
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In multi-pass and multi-layer welding, temperature control between each bead and layer is crucial. This is the “interpass temperature” under discussion. Interpass temperature refers to the maximum or minimum temperature to which the previous layer or bead can reach before the next l... Read more »
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Commonly used stainless steel solid welding wires include AWS ER308, ER308L, ER309, ER309L, R316, ER316L and ER2209, etc., which are widely used in stainless steel welding, chemical industry, shipbuilding and bridge construction. The choice of stainless steel solid welding wire model must be ma... Read more »
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Important structures such as boilers and pressure vessels require safe penetration of joints, but due to limitations in structure size and shape, double-sided welding is sometimes impossible. A special operation method that can only create a single-sided groove is single-sided welding and double... Read more »
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1. Core principle: Why must we use argon? During the welding process, the metal is like red-hot iron at high temperatures. If it is not protected, it will immediately combine with the oxygen and nitrogen in the air. The result is that the weld will have pores and cracks, and the strength is sim... Read more »
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Among welding methods, Tungsten Inert Gas Welding (TIG) and Shielded Metal Arc Welding (SMAW)—commonly referred to as “Arc Welding”—are the two most prevalent processes. Those unfamiliar with welding techniques often confuse the two; however, they differ vastly in terms of their shi... Read more »
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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 »