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

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

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

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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Butt welding machine application range

20 Sep 2022

Butt welding machine is also called resistance butt welding machine. It is mainly suitable for high-speed and large-volume operations. It uses resistance butt welding method, which has high electric energy utilization rate and good welding effect. The small size reduces the welding defect rate to a minimum. The equipment is used for welding wire and cable, bicycle basket, enameled wire, steel wire products, luggage frame and flat wire products. Structure and Features: The welding machine transformer adopts a vertical one-way shell-type mechanism, which has high welding efficiency and low loss. The use of different welding dies can be replaced according to different welding objects, which is more convenient. The inside of the equipment is transformed from 380V voltage to 36V electricity, with good safety performance. Suitable for welding of various metal materials such as carbon steel, stainless steel, aluminum alloy, copper alloy, etc. Butt welding machine is very useful between steel ...

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Butt welding process can be divided into resistance butt welding and flash butt welding

13 Sep 2022

1. Butt welding process According to the working principle of the butt welding machine, the butt welding process can be divided into two types: resistance butt welding and flash butt welding: Resistance butt welding Resistance butt welding is to heat the end joint of the steel bar to a plastic state and then cut off the power supply, and then heat it again to achieve a plastic connection. This welding process is easy to produce oxidation and slag inclusions at the joints, and requires the cross-section of the steel bars to be smooth and smooth. Flash Butt Welding Flash butt welding refers to the ejection of molten metal particles from the end joints of rebar during the welding process, presenting sparks (ie, flashes). When the molten metal is sprayed, it also brings out oxides and slag inclusions, so that the quality of the butt welded joint is good, so it is widely used, especially for the butt joint of low carbon steel and low alloy steel. 2. How to use The following items should be ...

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