波峰焊机用平面感应电磁泵的研究与设计

The study and design of the planar inductive electromagnetic pump for wave soldering

从平面感应式电磁泵的原理出发,结合波峰焊机特点,考虑影响感应式电磁泵磁感应强度的因素,设计制造了平面型感应电磁泵,并对液态金属的流动速度、泵沟高度和线圈绕组的布置方式对磁感应强度的影响进行了分析.结果表明：在较小的压差范围内,液态金属的流动速度的变化对所需磁感应强度影响较大.适当增加泵沟高度,有利于减小所需的磁感应强度.不同绕组的布置方式所需的外加磁感应强度大小基本相同,可根据实际需要选择.研究结果可为相关人员进行平面感应电磁泵的设计和制造提供理论指导.

A planar inductive electromagnetic pump was designed and manufactured according to the principle of inductive electromagnetic pump, with the characteristics of the wave soldering machine combined and the factors affecting the magnetic induction intensity considered. The influence of the flow velocity of metal liquid, the height of the pump ditch and the winding arrangement for the magnet- ic induction intensity were analyzed. The results reveal that under the small pressure, the outer magnetic induction intensity was greatly affected by the change of the liquid metal flow velocity. The required magnetic induction intensity was reduced by appropriately increas- ing the heigh of the pump ditch. The required magnetic induction intensity is basically the same under the different arrangement of the winding. The winding arrangement can be chosen by the actual needs. The results of this study can provide the theoretical guidance for the relevant design and manufacture.