Operation points of steel butt welding machine

24 Nov 2018

Operation points of steel butt welding machine The welder operator must be professionally trained, familiar with the welder construction, performance, operating procedures, and master the knowledge of process parameters selection, quality inspection specifications. Before operation, check whether the welding machine mechanism is sensitive and reliable, whether the electrical system is safe, whether the cooling water pump system has water leakage, and whether the lubrication parts are well filled. It is strictly forbidden to weld steel bars exceeding the specified diameter. The main ribs must be welded and then cold drawn. In order to ensure the quality of the welding, it is necessary to carry out cleaning, rust removal and correction in the range of about 150 mm. When working with the operator, you must bring colored protective glasses and hats to prevent the eyes from irritating the eyes and molten metal from burning the skin. The butt welder should be parked in a clean, dry and venti...

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USE

16 Nov 2018

USE 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 cut the power supply after heating the end joint of the steel bar to plastic state, and then heating to reach the plastic connection. This welding process is prone to oxidation and slag inclusion at the joint, and requires that the cross section of the steel bar be smooth and flat, and the power consumption during welding is large, requiring high power of the welder, so it is rarely used. Flash butt welding Flash butt welding refers to the spraying of molten metal particles from the end joints of the steel bars during the welding process, which is a spark (ie, flash). At the same time as the molten metal is ejected, the oxide and the slag are also taken out, so that the quality of the butt welded joint is good, and thus it is widely used, e...

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Technology

10 Nov 2018

Technology 1) Program-controlled voltage reduction flash soldering This soldering method is characterized by a high secondary no-load voltage at the beginning of the flash to facilitate the excitation of the flash. When the temperature of the end face rises, the low-voltage flash is used and maintained. The flash speed is constant to increase thermal efficiency. When approaching the upset, the secondary voltage is increased to make the flash strong to increase the self-protection. Compared with preheated flash butt welding, the program-controlled voltage reduction butt welding has the advantages of short welding time, low power consumption and uniform heating. 2) Pulse flash butt welding This welding method is characterized in that, in the stroke of the moving clamp, a reciprocating vibration stroke is superimposed by the hydraulic vibration device, the amplitude is 0.25-1.2 mm, and the frequency is 3-35 Hz uniform. Tune. Due to the vibration, the end faces of the weldments are alterna...

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Safe operation

02 Nov 2018

Safe operation (1) The work surface of the shuttle should be kept horizontal with the lower part of the cutter. The length of the worktable can be determined according to the length of the processed material. When processing long steel bars, there should be special personnel to help, and follow the instructions of the operators, and do not push and pull at will. (2) Before starting, it is necessary to check that the cutter should be free of cracks, the bolts of the knife holder are fastened, and the protective cover is firm. Then turn the pulley by hand to check the gear meshing clearance and adjust the cutter clearance. (3) After starting, it should be operated first, check that all transmission parts and bearings are running normally before operation. (4) Do not cut the material when the machine does not reach the normal speed. When cutting, the middle and lower parts of the cutter must be used. The steel bar is quickly fed into the knife edge. The operator should press the steel bar...

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Working Principle

27 Oct 2018

Working Principle The radiator flash butt welding machine uses two 125KVA power frequency soldering resistance transformers as the power source. Both ends are pressed at the same time, discharge flash, and upset forging. The two steel radiator heads are connected with the middle elliptical tube. The burning amount and the upsetting The quantity and welding current are set and displayed by the PLC through the LCD screen. Welding range Welding is suitable for a wide range of applications. In principle, forged metal materials can be welded by flash butt welding. For example, low carbon steel, high carbon steel, alloy steel, stainless steel and other non-ferrous metals and alloys can be welded by flash butt welding. The welding cross-sectional area is large, and generally can be welded from tens to tens of thousands of mm2 cross-sectional area. Flash butt welding is widely used in welding various plates, fittings, profiles, solid parts, tools, etc. It is widely used and is an economical an...

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Product Categories

19 Oct 2018

Product Categories The welding machine is divided according to the welding method: flash butt welding machine steel butt welding machine copper rod butt welding machine Flash butt welding mainly uses the workpiece's counterpart contact resistance to generate heat to heat the workpiece. The metal surface is melted, the temperature gradient is large, and the heat affected zone is relatively small. The weld is a common grain under the plastic deformation of the solid phase metal of the workpiece. The weld structure and composition are close to the basic metal (or after heat treatment), and it is relatively easy to obtain a strong plastic welded joint. The flashing process has a self-protecting function that vents air and reduces metal oxidation. Upset forging also removes oxide from the liquid metal out of the weld. There are fewer defects such as weld inclusions and incomplete penetration. The flashing process has a strong self-adjusting function, which requires less strict consistency o...

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