CAJ | 학술논문

为了改善锌铝合金线材加工使用性能,依据90°转角挤压原理,采用径向挤压出线工艺制取线材,研究了线材拉拔后的微观组织和力学性能,并与轴向挤压出线工艺进行对比.结果表明,径向挤压出线工艺可明显细化合金组织,且有纤维化倾向.线材抗拉强度降低15%,而伸长率提高30%.该工艺有利于线坯的拉拔加工,减少喷枪送丝途中的阻力.
위료개선자려합금선재가공사용성능,의거90°전각제압원리,채용경향제압출선공예제취선재,연구료선재랍발후적미관조직화역학성능,병여축향제압출선공예진행대비.결과표명,경향제압출선공예가명현세화합금조직,차유섬유화경향.선재항랍강도강저15%,이신장솔제고30%.해공예유리우선배적랍발가공,감소분창송사도중적조력.
Zn-AI alloy wire billets were prepared by ra-dial extrusion based on the 90*angular pressing princi-ple to improve the processing and application perform-ance. Microstructure and mechanical properties of the alloy wire were analyzed. The results show that grain size in the radial extruded alloy wire is obviously re-fined with the formation of fibrous structure. Com-pared with that prepared by axial extrusion, tensile strength of the radial extruded alloy wire is decreased by 15 %, however, elongation is increased by approxi- mately 30 %. The radial extrusion technique is in favor of drawing of wire billets, and the resistance is re-duced during feeding the wire into spraying gun.