Analysis of the stress state analysis shows that the high-frequency machine stress state, the pressure in the rough edges of the mold value σs ln (r + h) / r. Reached when the r / h value α1 and yield stress σs phase and on values. Thus, rough drawing resistance on the curved section significantly weaker. Instead hardening effects are due to bending caused these segments, its more hardened flat segment generated quickly. According to r / h value, is one of the dominant factors. In determining the punch and die when the minimum radius Rmin allow automatic frequency machine starting from the following conditions, i.e. not in contact with the mold into a plastic blank section should disappear in a stretched condition bearing capacity to withstand the contact pressure of the blank segment prior to. The resulting value Rmin than usual bending nearly 50% larger, for low carbon steel, Rmin value does not exceed the thickness value of the material. The inclined wall in the test sample limit angle of nearly 45 °, the results of this can be confirmed by test pressing profiles. a, there must be more to operate two high-frequency equipment, and specify the action the person in charge. Wear good shoes, insulation, insulated gloves and other protective equipment specified. b, the operator must be familiar with the rules of the high-frequency device, the device should be checked before starting the cooling system is normal, before sending to normal after power, and strictly follow the rules and instructions. c, before all the work should be shut the door, the door should be installed electrical interlock device to ensure that the motor can not be sent to the front door is not closed. After the high-pressure closed, not free to the machine after the event, non-open door. d, the workpiece should remove burrs, iron and oil, or prone to arcing phenomena and sensor when heated. Arcing current arc generated light can damage eyesight both frequency machine, it is easy to bash sensors and damage to equipment. e, high-frequency equipment should be kept clean, dry and free from dust, high-frequency anomalies found in the work machine manufacturers, first cut off the high voltage, and then check the troubleshooting. There must be someone to repair the high-frequency device, open the door, the first electricity to the anode rod, gate capacitors discharge 500w high frequency machine, and then began to overhaul, repair non-electrified. Use quenching machine, should comply with the safety regulations for electrical, mechanical and hydraulic drive. When moving quenching machine, should prevent dumping. Automatic frequency machine | Qingdao Tianrun High Frequency (certified) | high frequency machine provided by Qingdao Tianrun High Frequency Electric Co. Qingdao Tianrun High Frequency Electric Co., Ltd. (www.gaozhoubo.com.cn) is a leader in Qingdao, packaging related equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Qingdao Tianrun High Frequency leadership with the staff warmly welcome all inquiries negotiations to create Qingdao Tianrun High Frequency better future.