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葛州坝一号船闸人字门端板焊接的预热工艺是成功的经验。该文主要针对焊接预热的作用及预热温度的确定进行论述,预热时采用高效节能的远红外电热新技术,介绍了远红外电热原理、加热器的结构以及电气控制和温度控制原理线路。
Gezhouba No.1 ship lock Miter door end plate welding preheating process is a successful experience. This paper mainly discusses the function of preheating and the determination of preheating temperature. When preheating, we adopt the new technology of far-infrared energy with high efficiency and energy saving. The principle of far-infrared heating, the structure of heater and the circuit of electric control and temperature control .