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This is related to the performance and structure of low carbon steel. Its carbon content is low, below 0.2%. It has low strength, low hardness, good toughness and weldability, and a wide range of welding parameters. Generally, low carbon steel with a thickness of 0.5-3.5mm does not require special measures and can be simply welded with a single-phase power frequency AC power spot welder.
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1. The role of the pre-pressure stage is to reduce contact resistance, increase conductive cross-section, and increase physical contact points, creating conditions for the smooth passage of welding current in the future; in addition, under the action of pressure, the plastic deformation caused by the extrusion of metal into the gap helps to form a transparent sealing layer around the nugget to seal the nugget.
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Everything has its own laws of operation. The editor of Xinxing recommends that welders understand the law of nugget changes in resistance spot welding and weld high-quality products.
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When welding with a resistance welder, the surface of the workpiece must be kept clean. If rust, oil stains and other contaminants are not cleaned, it will produce great resistance, resulting in defects such as incomplete welding and weak welding.
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The solder joints during spot welding have clear requirements on some materials, such as size, penetration rate, etc. If there is deviation, it means it does not meet the standards. The editor of Xinxing has seen the solution using an upper and lower cylinder type spot welder. In fact, there are 5 solutions. Let’s take a look.
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The welding process of the resistance welding machine is completed in 2 seconds. The editor of Xinxing often thinks that it is a simple matter, but it consists of 4 main stages: 1. Pre-pressure 2. Welding time 3. Maintenance time 4. Rest time
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Why do we need to understand the heat distribution when welding with resistance welding machine? This allows everyone to better control them and equip them with suitable electrodes and cooling methods to weld good products faster and better.
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The prices of pneumatic spot welders on the Internet vary widely. As a buyer, you need to click on them one by one to take a closer look at the prices. Many of the low prices are deposits, some are introductory prices (a strategy to divert traffic), some have very small power and the workpieces welded are very thin.
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Each manufacturer’s spot welding machine is slightly different in structure, and the operating precautions of the welding machine are also different. The spot welding machine here is a DTN stainless steel spot welding machine, which is one of the NOVEL WELDER pneumatic spot welding machines. The precautions before operation are as follows, please read carefully.
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