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Home / News (Page 4)
  • Application scope of butt welding machine

    Application scope of butt welding machine

    04 Nov 2022

    The butt welding machine, also known as the resistance butt welding machine, is mainly suitable for high-speed and mass operations. It uses the resistance butt welding method, which has a high utilization rate of electric energy and good welding effect. It can carry out multiple parameter memory settings with fast reaction speed. The welding produces small burrs, thus reducing the welding defect rate. The equipment is used for welding wires and cables, bicycle baskets, enamelled wires, steel wire products, leather case frames and flat iron wire products. Structure and characteristics: The welding machine transformer adopts vertical unidirectional shell structure, with high welding efficiency and low loss. Different welding dies can be replaced according to different welding objects, which is easier to use. The internal voltage of the equipment is changed from 380V to 36V, with good safety performance. It is suitable for welding carbon steel, stainless steel, aluminum alloy, copper allo...

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  • Process of butt welding machine

    Process of butt welding machine

    25 Oct 2022

    Thermal flash process: After the current is applied, the two workpieces make surface contact for many times, and then quickly separate to form intermittent flash and then turn into a stable continuous flash process until upsetting. In addition to the intermittent flash preheating formed by reciprocating movement, resistance preheating method can also be used, that is, the two workpieces contact under a certain pressure, the current passes through the contact surface of the two workpieces, and the heat generated by the resistance of the contact surface is preheated when the current is applied. In the process of preheating, flashing and upsetting, close the power supply during welding, and then make the end faces of the two rebars alternately contact and separate. At this time, the gap between the end faces of the rebars gives out continuous flashing, forming a preheating process. When the rebars enter the flashing stage after entering the preheating temperature, they are then upsetting ...

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  • The working principle of continuous flash butt welding machine

    The working principle of continuous flash butt welding machine

    19 Oct 2022

    The continuous flash butt welding machine welding cycle consists of flash, upset, hold, rest and other procedures. Flash and upsetting two successive stages constitute the formation process of continuous flash butt welded joint. The hold, rest and other procedures are necessary in the butt welding operation. Preheat flash butt welding has a preheat phase in its welding cycle (before the flash). The essence of the formation of the flash: turn on the power and make the end faces of the two weldments touch slightly. Many small contacts with very small resistance will be formed between the counterparts. Under the heating of a large current density, they will melt instantaneously to form a liquid lintel connecting the two ends of the counterparts. At the same time, under the action of the liquid surface tension radial electromagnetic compression effect force, electromagnetic repulsion force, and electromagnetic attraction force, coupled with strong heating. There is a huge pressure differen...

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  • Welding process treatment of butt welder

    Welding process treatment of butt welder

    12 Oct 2022

    The staff shall be familiar with the welding process of butt welding machine: 1. Continuous flash welding: continuous flash, upset forging, and electric heating treatment on the welding machine after upset forging; 2. Preheating flash welding: primary flash, burning preheating, secondary flash, upset forging. 2、 The operator must be familiar with the mechanical and technical properties used (such as transformer stage, welding section, welding times, upset force, feeding stroke), and the location and application of main components. 3、 The operator shall be able to select welding parameters according to mechanical properties and weldments. 4、 Weldment preparation: remove rust, oil stain and dust within 120 mm of the reinforcement end. If the end is bent, it shall be straightened or cut off. 5、 The butt welding machine shall be installed indoors and shall be reliably grounded (or connected to neutral). When multiple butt welders are installed together, the distance between them shall be a...

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  • Butt welder is a step-down transformer

    Butt welder is a step-down transformer

    09 Oct 2022

    The main component of the butt welding machine is a step-down transformer, and the two ends of the secondary coil are the workpiece to be welded and the electrode. When working, the arc is ignited, and the electrode is fused into the gap of the workpiece at the high temperature of the arc. Because the iron core of the welding transformer has its own characteristics, it has the characteristics of a sharp drop in voltage, that is, the voltage drops after the electrode is ignited; when the electrode is stuck and short-circuited, the voltage drops sharply. Next, the editor will introduce the principle of butt welding machine and the advantages of butt welding machine. What the butt welding machine uses is that the resistance will generate heat when the workpiece is in contact with each other, so as to achieve the purpose of heating the workpiece and make the metal surface melt, and the weld is formed under the condition of plastic deformation of the solid phase metal of the workpiece count...

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  • Butt welding machine has self-protection function

    Butt welding machine has self-protection function

    29 Sep 2022

    The main component of the butt welding machine is a step-down transformer, and the two ends of the secondary coil are the workpiece to be welded and the electrode. When working, the arc is ignited, and the electrode is fused into the gap of the workpiece at the high temperature of the arc. Because the iron core of the welding transformer has its own characteristics, it has the characteristics of a sharp drop in voltage, that is, the voltage drops after the electrode is ignited; when the electrode is stuck and short-circuited, the voltage drops sharply. Next, we will introduce the principle of butt welding machine and the advantages of butt welding machine. What the butt welding machine uses is that the resistance will generate heat when the workpiece is in contact with each other, so as to achieve the purpose of heating the workpiece and make the metal surface melt, and the weld is formed under the condition of plastic deformation of the solid phase metal of the workpiece counterpart. ...

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