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What are the reasons for the poor contact of the conductors of the can seam welding machine?

What are the reasons for the poor contact of the conductors of the can seam welding machine?

发布时间：

2024-03-26

In the production process of the tank body, sometimes the surface of the can seam welding machine seems to be welded normally, and the network voltage, controller, and welded steel plates are also normal. However, serious cracking and leakage often occur in the process of tank flanging and leak testing. It may be that a certain conductor connection part in the electrode circuit of the can seam welding machine has poor contact due to oxidation, ignition, screw shaking, etc. At this time, the direct short-circuit method can be used. Under the condition of normal water flow of the cooling water, the normal welding current is directly short-circuited. After 10 minutes up and down, it is detected which part is particularly hot, indicating that the contact surface of this part has no If there is any problem, it must be disassembled and corrected.

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What should I do if the output of the can seam welding machine is abnormal?

What should I do if the output of the can seam welding machine is abnormal?

发布时间：

2024-03-26

The working principle of the can making seam welding machine is that the low voltage and high current generate heat according to the short circuit of the two electrodes, and the steel plate is melted to achieve the sealing effect. During the welding process of the steel tank, a large current will be transmitted from the transformer to the welding wheel through the movable contact surface. The heat-treated chrome-zirconium-copper material should be selected as the conductive shaft, and red copper or 94 copper should be used as the conductive sleeve to avoid the material Resistance and hardness constraints. Only by paying attention to every detail can the equipment run smoothly in production. However, it is unavoidable that abnormalities will occur during the use of the equipment. For example, if the power output of the can seam welding machine is abnormal, the first thing to do is to check whether the input power supply voltage of the voltmeter is normal. Then check whether the screws at the connection points such as electrodes, welding guns, welding guns, and cables are tightened. Check whether the cable has been used for too long, causing some cables to break due to the wind at the joint connection, which reduces the cross-sectional area of ​​the cable and needs to be corrected. Check whether the contact surface of the electrode and the contact surface of each component is dirty or has an oxide layer, otherwise it needs to be cleaned. If the above steps are still unable to solve the problem, then a dedicated manufacturer is required to deal with it.

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Resistance seam welding, the difference between intermittent and continuous

Resistance seam welding, the difference between intermittent and continuous

发布时间：

2024-03-26

Resistance seam welding is a process in which a weld is formed at the interface of two similar metals. Seams can be butt joints or lap joints and are usually an automated process. It differs from flash welding in that flash welding usually welds the entire joint at once, whereas seam welding starts at one end and gradually forms the weld. Like spot welding, seam welding relies on two electrodes, usually made of copper, to apply pressure and current. The electrodes are usually disc-shaped and rotate as material passes between them. This allows the electrodes to remain in constant contact with the material for prolonged continuous welding. The electrodes can also move or assist the movement of the material. The transformer provides energy to the welded joint in the form of a low voltage, high current AC power source. The joint of the workpiece has high resistance relative to the rest of the circuit and is heated to its melting point by the current. The semi-molten surfaces are pressed together by the welding pressure, resulting in fusion and a uniform welded structure. Due to the heat generated, most seam welders use water cooling through the electrode, transformer and controller components. Seam welding produces extremely durable seams because the joint is forged due to the heat and pressure applied. A properly welded joint formed by resistance welding is easily stronger than the material from which it was formed. A common use of seam welding is in the manufacture of round or rectangular steel pipes. Seam welding has been used to make steel beverage cans, but is no longer used here because modern beverage cans are seamless aluminum. There are two modes of seam welding: intermittent and continuous. In intermittent seam welding, the wheel advances to the desired position and stops for each weld. This process continues until the desired weld length is reached. In continuous seam welding, the wheel continues to roll as each seam is made.

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Vertical Circumferential Seam Welding Machine for Carbon Steel and Stainless Steel Vessel Welding

Vertical Circumferential Seam Welding Machine for Carbon Steel and Stainless Steel Vessel Welding

发布时间：

2024-03-26

Vertical girth welding machine is used for girth welding of various metals, carbon steel, stainless steel, and other metal workpieces. It can process gas storage tanks, water heaters, transmission shafts, containers, tanks, pipe butt joints, pipe flanges, pipe elbow tees and other circular seam welding processing. It can accurately and efficiently complete the welding of ring workpieces, realize the automation of various welding processes, improve the automation level and production efficiency of parts, and ensure the welding quality. The circular seam welding machine consists of a reversible rotary mechanism, a welding torch adjustment mechanism, a welding torch pneumatic lifting mechanism, and a controller. The pneumatic lifting mechanism of the welding torch is driven by a cylinder and guided by a linear slide rail to ensure that the welding torch moves quickly to the welding position when preparing for welding. After the welding is completed, the welding torch is lifted to facilitate loading and unloading of the workpiece. The welding torch fine-tuning mechanism can adjust the welding torch in the up and down, left and right directions to ensure that the welding torch reaches the welding position accurately. Stainless steel material has good corrosion resistance and oxidation resistance, and is widely used in container manufacturing and flange processing. The pneumatic mechanism is used for positioning, and the head is clamped with a cylinder to ensure the tight fit between the cylinder and the head. According to the length and diameter of the cylinder, the fixture can be replaced to weld products of different specifications. The use of DC motor stepless speed regulation, uniform rotation without jitter, strong anti-interference, to ensure high quality and stability of the workpiece. It can adapt to various types of welding, and functions such as welding implementation are realized by the operating system. The operation is simple and convenient. The operation adopts the man-machine interface to modify the parameters. High degree of automation, improve work efficiency and reduce welding deformation. The workpiece is loaded, positioned, the welding torch can be adjusted up and down, left and right and the angle can be adjusted at a certain angle, the workpiece is rotated, and the welding shape is beautiful. Pipeline vertical girth welding machine equipment is suitable for metal welding industry, better control method of arc welding process in lower current range, can provide stable welding control and precision, produce high quality weld in micro or precision welding.

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