Analysis of starting transient process and design of protection circuit for arc welding inverter 弧焊逆变电源起动过渡过程分析及保护电路设计
Starting from analysing the efficiency of constant current analogue-type transistor arc welding power source, the authors found that it is necessary and rational to develop a switch-type transistor arc welding power source. 本文就分析恒流模拟型晶体管弧焊电源效率问题着手,提出了开发开关型晶体管弧焊电源的必要性与合理性。
This paper introduces the control circuit, triggering circuit, SCR loop, welding tractor speed regulating loop, starting and stopping control circuit of automatic submerged arc welding machine in detail, as well as common breakdown and reason analysis about this kind of machine. 详细介绍了自动埋弧焊机特性控制电路、触发电路、晶闸管回路、焊车调速回路、起停控制电路,以及该类焊机的常见故障和原因分析。
The result shows that the diameter of plasma arc beam becomes smaller, the stiffness and the stability increase and arc starting is easier, the pool depth of the deposition layer increases and the pool width decreases after laser acts on plasma arc. 试验结果表明:激光作用于等离子弧后,等离子弧柱的直径变小,挺度增加,稳定性增强,起弧容易,熔积层的熔深增大,熔宽减小。
Starting from solving the power balance non-linear differential equation for the electric arc with the arc radius as a state variable, instead of regarding the arc resistance as a constant, the relationship of arc current and arc radius is obtained. 与以往基于电弧阻抗的电弧炉模型不同,该模型从电弧炉的电弧能量方程出发,以电弧半径作为状态变量通过解非线性方程求出电弧半径与电流的关系。
Aimed at preventing plastic screw thread from of easy to be damaged when tightening the join, the starting part of screw thread is manufactured to be arc shape, so as to increase intensity, the manufacture method of this injection mold screw thread is stated. 针对防止塑料螺纹在紧固联接时易损坏的特点,将螺纹起头加工成弧形,以加大强度,叙述了此注射模螺纹的加工方法。
The manner of arc starting control increases succeed rate, current attenuation arc stopping control improves welding shaped of arc pit. 采用电流衰减收弧控制方案,改善了弧坑的焊缝成形。