With the continuous development of China's industrial technology, the continuous improvement of automation, mechanical equipment and parts enterprises attach importance to material wear and damage caused by wear is also improved. As one of the main failure forms of raw materials, (omitted) the economic loss is very serious. Therefore, effectively reduce the friction and wear to improve the mechanical properties of materials has great economic significance. As the surfacing technology commonly used surface strengthening technology, often used to improve the wear resistance of the material.
The copper and copper alloy is relatively inexpensive, but also has the characteristics of good abrasion resistance, corrosion resistance, electrical conductivity and thermal conductivity, (omitted) as an important welding alloy wide (omitted) in many fields. People desire to improve wear resistance, further improve gradually from the transfer to the parent material to the performance of surfacing layer to. Join the magnetic field in the welding process, the magnetic stirring grain refinement to improve the effect of surfacing layer has become an important tool.
The negative polarity weak plasma arc powder (omitted) aluminum bronze, copper alloy powder surfacing to low carbon steel 20g, HT200 cast iron base material. And the first attempt on the transverse alternating magnetic field, through the micro hardness of the surfacing layer, grinding pin wear, micro lens, scanning electron microscope and Jin Xiangxian line scanning experiment, the comparative analysis of different welding current and magnetic current on hardness of surfacing layer (omitted) affect the shape, microstructure and interface etc..