How electron beam welding works


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2022-12-27

Liaoning Fengcheng Tiansheng Precision Machinery Manufacturing Co., Ltd. was established in 2011, located in Erlongshan Industrial Park, Fengcheng Modern Industrial Park, with a registered capital of 500,000 yuan, is a private high-tech enterprise specializing in the manufacture of supercharger rotor shaft and rotor assembly automotive precision parts.

Liaoning Fengcheng Tiansheng Precision Machinery Manufacturing Co., Ltd. was established in 2011, located in Erlongshan Industrial Park, Fengcheng Modern Industrial Park, with a registered capital of 500,000 yuan, is a private high-tech enterprise specializing in the manufacture of supercharger rotor shaft and rotor assembly automotive precision parts.

Products mainly include supercharger rotor assembly, rotor shaft, etc., which are the core components of automotive superchargers. Annual production and sales of precision supercharger precision accessories tens of thousands of pieces/sets. The auto parts products produced by the company are sold all over the country, and Shandong, Wuxi and other enterprises have established supplier relations. The installed host is sold to more than 30 provinces and cities in China, and sold to the United States, Britain, Australia, Hong Kong and Southeast Asia. Turbocharger movement 

The company adheres to the professional and excellent management concept. With high-end production equipment and testing equipment, constantly improve process technology and sound management system, constantly improve product quality and product competitiveness, comprehensively explore domestic and foreign markets, continuously expand the sales share and scale of products to accelerate the pace of development. We adhere to the guidance of scientific and technological progress, people-oriented as the purpose, keep pace with the times, and create excellence! Fengcheng supercharger Liaoning supercharger accessories

The system block diagram of the high-voltage power supply is shown in Figure 1, and the grid voltage enters the high-voltage step-up rectifier transformer once through the current suppression circuit, and the secondary boost is about 100kV. This AC high voltage is then filtered by 12-phase rectification to obtain a DC high voltage of about 160kV, which is added to the high-voltage vacuum tube and electron gun, of which the voltage of the high-voltage electron tube is 40kV during operation, so that the high voltage added to the electron gun is 120kV. High-pressure vacuum tubes are used to regulate and stabilize high-voltage output. The schematic diagram of the main circuit of the high-voltage power supply designed according to Figure 1 is shown in Figure 2, and the power supply of Figure 2 is a typical series type of high-voltage DC regulated power supply directly regulated on the high-voltage side, and its main circuit is mainly composed of overcurrent suppression circuit, high-voltage boost rectifier transformer, high-voltage rectifier circuit, high-voltage filtering, resistance-capacitance and overvoltage, overcurrent protection circuit, high-voltage vacuum tube regulation circuit, etc. High-voltage boost rectifier transformer, high-voltage rectifier circuit, high-voltage filtering, resistance-capacitance and overvoltage, overcurrent protection circuit are placed in the oil tank, and the oil tank is filled with transformer oil to ensure the insulation and heat dissipation needs of the power supply body during operation. Since the high-voltage power supply needs to work continuously, in order to ensure that the heat during operation can be dissipated in time, a water cooling system is also designed inside the tank.

The composition and function of each circuit of the power supply is as follows: the overcurrent suppression circuit is composed of a three-phase bridge rectifier circuit and a choke inductor, if the load overcurrent or the power supply due to sudden closing in the transformer caused by electromagnetic transient process and large current and other phenomena, the overcurrent suppression circuit can effectively limit the overcurrent inside the power supply to protect the power supply from damage. Its principle is mainly to use the characteristics of inductor current can not be abrupt to limit the overcurrent and ensure that the high-voltage transformer is not damaged. Under normal conditions, the three-phase current is balanced, and the current flowing into the overcurrent suppression circuit is small. The rectifier transformer is two groups of four coils connected into star and triangle type, and each group is connected in series to obtain a 12-phase DC pulsation voltage, which is conducive to reducing the pollution of harmonic current to the power grid, reducing the filter capacitance and reducing the ripple coefficient of the power supply, and improving the performance of the power supply itself. The rectifier circuit is composed of a high-voltage silicon stack and a resistance-capacitor element, and the resistance-capacitance circuit mainly prevents the overvoltage generated by the high-voltage silicon stack to ensure that the high-voltage silicon stack is not damaged. The current limiting resistor and the protection resistor are used to limit the overcurrent and overvoltage inside the power supply to ensure the normal operation of the power supply, requiring a high withstand voltage level and a large heating power. When the external short circuit of the power supply, the protection circuit can be operated in the shortest possible time, so that the relevant components will not be damaged. The high-voltage filter capacitor removes the AC pulsation component in the DC output, ensuring that the voltage applied to the electron gun and pass transistor is straight. The capacitor core is placed directly in the high-voltage oil tank, which can reduce the volume of the power supply body. The regulating tube is a multi-pole high-voltage vacuum electronic tube, its working withstand voltage level is 160kV, mainly composed of anode, control electrode, first, second, three anodes, etc., the anode of the regulating tube is connected to the positive electrode of the high-voltage rectifier, and the cathode of the regulating tube is connected to the earth through the beam sampling resistance. The pass transistor can automatically adjust and stabilize the high-voltage output under the action of the control circuit. High voltage regulating tube due to high working voltage, in the work will produce a lot of heat, for this design a special heat dissipation device, that is, the entire adjustment tube in a tank loaded with insulating oil to ensure cooling and insulation needs, the tank is also equipped with a special heat dissipation water cooling system to ensure that the adjustment tube can work reliably for a long time. There are many auxiliary power supplies for the pass tube, which are also placed in the tank for heat dissipation and layout needs. The adjustment principle of the pass tube is that its cathode emits electrons due to heating. Electrons under the acceleration of the anode high voltage, respectively reach the second anode and anode, if the voltage of the second anode is high, the accelerated electrons will all reach the second anode, at this time the tube is in a high-resistance state, the voltage on the power supply is all added to the pass tube. As long as the size of the second anode voltage is adjusted, the voltage on the pass transistor can also be adjusted, so that the high voltage added to the electron gun can also be adjusted, and finally the stable adjustment of the high voltage output can be realized.

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Contact person:Manager Li

Address:Caohe Industrial Park, Caohe Economic Management Zone, Fengcheng City, Liaoning Province

E-mail:819414279@qq.com
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