CAJ | 학술논문

针对目前传统热处理工艺产品高消耗、高成本、且力学性能较差等问题，并考虑低压铸造ZL101铝合金车轮经过机械加工后的表面处理工序（喷漆和烘烤），探索出一种新的铝合金车轮分级时效热处理工艺。将热处理工艺分为固熔、初级时效、再时效即喷漆烘烤三个工序。固熔温度540±5℃，固熔时间250～290 min；初级时效温度130±5℃，时效时间60～90 min；喷漆烘烤温度170～200℃，喷漆烘烤时间60～80 min。结果表明，将铝合金车轮表面喷漆烘烤作为热处理再时效工艺，不仅降低了能耗和生产成本，同时铝车轮强度和韧性达到理想的状态，抗拉强度、屈服强度、延伸率明显提高。
침대목전전통열처리공예산품고소모、고성본、차역학성능교차등문제，병고필저압주조ZL101려합금차륜경과궤계가공후적표면처리공서（분칠화홍고），탐색출일충신적려합금차륜분급시효열처리공예。장열처리공예분위고용、초급시효、재시효즉분칠홍고삼개공서。고용온도540±5℃，고용시간250～290 min；초급시효온도130±5℃，시효시간60～90 min；분칠홍고온도170～200℃，분칠홍고시간60～80 min。결과표명，장려합금차륜표면분칠홍고작위열처리재시효공예，불부강저료능모화생산성본，동시려차륜강도화인성체도이상적상태，항랍강도、굴복강도、연신솔명현제고。
Due to disadvantages of traditional heat treatment process,such as high consumption,high cost and poor mechanical properties,a new heat treatment process called the step aging heat treatment process has been explored.In this paper,the relations between solution treatment process and the mechanical properties of the ZL101 aluminum alloy wheels by low-pressure casting has been investigated by different solution treatment parameter.Solution treatment parameters include solution treatment temperature of 540 ±5℃,solution treat-ment time of 250~290 mins,the primary aging treatment temperature of 130 ±5℃,aging treatment time of 60~90mins,re-aging in painting and baking temperature of 170~200℃,painting and baking time of 60 ~80mins.The results show that painting and baking heat treatment process as a part of the process of re-aging can reduce energy consumption and production costs.Meanwhile,strength and toughness of aluminum wheel reach desired state.The hardness,tensile strength,yield strength and elongation rate of final product increase significantly.