Thermal flash process:

After the current is applied, the two workpieces make surface contact for many times, and then quickly separate to form intermittent flashing and then turn into a stable continuous flashing process until upsetting. In addition to the intermittent flash preheating by reciprocating motion, resistance preheating can also be used Thermal method, that is, two workpieces are contacted under a certain pressure, and when a current is applied, the current passes through the contact surface of the two workpieces, and is preheated by the heat generated by the resistance of the contact surface.

In the process of preheating, flashing and upsetting, the power supply is turned off during welding, and then the ends of the two steel bars are alternately contacted and separated. At this time, the gap between the end faces of the steel bars emits continuous flashes, forming a preheating process. When the steel bars enter the preheating temperature After entering the flash stage, it is then upset forged to complete a welded joint.

Flash speed:

The flash speed is synthesized from the initial speed and acceleration. During the flashing process, the flow regulating valve is further opened by the roller lever, and thus the flashing speed is increased. The flashing speed depends on the welding current and the cross-sectional area of ​​the material. If the flashing speed is adjusted too fast, the material The heating time is short.

The flash speed is adjusted by turning the right knob by adjusting the flow below the upsetting cylinder.

Flash speed The flash acceleration can be adjusted by changing the angle of the adjustable angle bump.

Too high a flash device speed will cause the flashing process to end quickly and the material will start upsetting prematurely, and when the acceleration speed is too low, the material will not be sufficiently heated.

Host maintenance:

The equipment will cause dust accumulation during the welding process. It needs to be cleaned inside and outside after the work is completed. It is worth noting that the jaws and electrodes of the fixture should be cleaned every hour, otherwise the current intensity will not be enough during work. The spatter and the medium on the surface are cleaned to ensure that the contact resistance between the workpiece and the electrode remains low.

Welding slag falling into the shield needs to be removed immediately, and if it continues to accumulate, it will affect the upsetting speed.

In the process of equipment maintenance, if a large distance is required between the moving plate and the fixed plate, first use the manual operation method to return the moving plate to the bottom and close the hydraulic station.

The guide rail bearings of the main engine are manually lubricated, and the other moving joints and guide rails are equipped with automatic oil injection machines to inject lubricating oil regularly.

Features:

The precision regulating valve set in the hydraulic system of the welding machine can realize the stepless adjustment of the flash butt welding speed, ensure the stability of the flashing process, and make the welding workpiece joint less slag, good metallographic, firm and beautiful.

The flash 400mm pe pipe welding machine is mainly used for the butt joint of the end faces of the parts. Generally, the end face shape and section of the butt joint are required to be the same. It can be used for plates, round bars, square bars and pipe fittings. The materials that can be butted include ordinary carbon steel, stainless steel, aluminum alloy, Brass etc.​​

400mm pe pipe welding machine https://www.dowelding.com/400mm-plastic-welder-pe-butt-welding-machine.html