Mechanical and technical properties used in the welding process

06 May 2020

1. The staff should be familiar with the welding process of the butt-fusion welding machine: (1) Continuous flash welding: continuous flashing, upsetting, and electric heating treatment on the welding machine after upsetting; (2) Preheating flash welding: one flash, preheating by firing, second flash, upset forging. 2. The operator must be familiar with the mechanical and technical properties used, as well as the location and application of the main components. 3. The operator should select the welding parameters according to the mechanical properties and welding material. 4. Weldment preparation: remove rust, oil and dust within 120 mm of the end of the steel bar. If the tip is bent, it should be straightened or cut off. 5. The butt welding machine should be installed indoors and should have reliable grounding (or zero connection). When multiple butt welding machines are installed together, the distance between the machines must be at least 3 meters. And connected to different power s...

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The main component of the butt welding machine is a step-down transformer

27 Apr 2020

The main part of the Butt fusion welding machines is a step-down transformer. At both ends of the secondary coil are the workpiece and the electrode to be welded. During operation, the arc is ignited, and the electrode is welded to the gap of the workpiece in the high temperature of the arc. Because the 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, I will introduce the principle of butt welding machine and its advantages. Scope of welding machine The welding has a wide range of application. In principle, all metal materials that can be forged can be welded by flash butt welding. For example, non-ferrous metals and alloys such as low carbon steel, high carbon steel, alloy steel and stainless steel can be welded by flash butt welding. Welding cross-sectional area is wide, generall...

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What are the advantages of butt welding machine

21 Apr 2020

The main part of the butt welding machine is a step-down transformer. At both ends of the secondary coil are the workpiece and the electrode to be welded. During operation, the arc is ignited, and the electrode is welded to the gap of the workpiece in the high temperature of the arc. Because the 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, I will introduce the principle of butt welding machine and its advantages. What the butt welding machine uses is that the resistance will generate heat when the workpieces are in contact with each other, so as to achieve the purpose of heating the workpiece, causing the metal surface to melt, and the welding seam is formed under the condition that the solid metal of the workpiece is plastically deformed. The grains, weld structure and composi...

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Is the welding efficiency of the butt welding machine high?

13 Apr 2020

The main part of the Butt fusion welding machines is a step-down transformer. At both ends of the secondary coil are the workpiece and the electrode to be welded. During operation, the arc is ignited, and the electrode is welded to the gap of the workpiece in the high temperature of the arc. Because the 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, I will introduce the principle of butt welding machine and its advantages. Butt welding machine principle What the butt welding machine uses is that the resistance will generate heat when the workpieces are in contact with each other, so as to achieve the purpose of heating the workpiece, causing the metal surface to melt, and the welding seam is formed under the condition that the solid metal of the workpiece is plastically deformed....

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Safety operation rules of butt welding machine

07 Apr 2020

Safety operation rules of butt welding machine 1. The staff should be familiar with the welding process of the butt welding machine: (1) Continuous flash welding: continuous flashing, upsetting, and electric heating treatment on the welding machine after upsetting; (2) Preheating flash welding: one flash, preheating by firing, second flash, upset forging. 2. The operator must be familiar with the mechanical and technical properties used, as well as the location and application of the main components. 3. The operator should select the welding parameters according to the mechanical properties and welding material. 4. Weldment preparation: remove rust, oil and dust within 120 mm of the end of the steel bar. If the tip is bent, it should be straightened or cut off. 5. The Butt fusion welding machines should be installed indoors and should have reliable grounding (or zero connection). When multiple butt welding machines are installed together, the distance between the machines must be at le...

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Do you konw flash butt welding

03 Apr 2020

The Butt fusion welding machines is divided according to the welding method: flash butt welding machine, steel butt welding machine, copper rod butt welding machine Welds are formed under the condition that the solid metal of the workpiece is plastically deformed to form common grains. The structure and composition of the weld are close to the base metal (or after heat treatment), and it is relatively easy to obtain equal strength and equal plastic welded joints. Flash butt welding mainly uses the contact resistance of the workpiece to heat the workpiece, the metal surface melts, the temperature gradient is large, and the heat affected zone is relatively small. The flashing process has the function of self-protection to expel air and reduce metal oxidation. Upsetting can also discharge oxides out of the weld with liquid metal. There are few defects such as weld inclusions and insufficient penetration. The flashing process has a strong self-adjusting function, lower requirements for mai...

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