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...
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...
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...
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...
13 Oct 2018
General method 1. Welding method: Ultrasonic vibration transmits ultrasonic waves to the weldment along with the welding head. Due to the large acoustic resistance of the two weldments, local high temperature is generated, and the weldment interface is melted. Under a certain pressure, the two weldments achieve a beautiful, fast and strong welding effect. 2, implant (insert) method: nut or other metal to insert into the plastic workpiece. First, the ultrasonic wave is transmitted to the metal, and after high-speed vibration, the metal object is directly buried in the molded plastic, and the plastic is melted, and the solidified material is buried. 3. Molding method: The plastic workpiece is instantly melted and formed by ultrasonic waves, and the plastic of metal or other materials can be solidified when the plastic is solidified. 4, the cutting method: the special design of the welding head and the base, when the plastic workpiece just shot, directly pressed on the branches of the pla...
Electrofusion connection process
08 Oct 2018
Electrofusion connection process 1 Preparation and precautions. The butt pipe sections shall be of the same material, and the same plant supporting materials shall be used as far as possible; the outer diameter and wall thickness of the butt pipe sections shall be the same, and the error shall be within the allowable range; the inner and outer surfaces of the pipe and pipe fittings to be welded shall be smooth and flat without any abnormality; The butt joints should have good processing and welding properties that match the welder. When welding in cold climate and high wind environment, protective measures should be taken; the surface to be welded must be scraped off and cleaned before welding; the electrofusion pipe fittings should not be unpacked when not in use, strictly in accordance with the specifications of the welding machine and the bar code of the pipe fittings. The time value is to be welded; the joint must not be moved or any external force applied during the welding proces...