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ZL205A高强度铝合金薄壁壳体铸造工艺研究
Research on Casting Process of ZL205A High Strength Aluminum Alloy Thin-walled Casting
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- DOI:
- 作者:
- 陈复生，秦秀丽，陈 明
CHEN Fusheng, QIN Xiuli, CHEN Ming
- 作者单位:
- 新乡市航空锻铸有限公司，河南 新乡 453049
Xinxiang Aviation Forging and Casting Co., Ltd., Xinxiang 453049, China
- 关键词:
- ZL205A 合金；薄壁铸件；铸造工艺
ZL205A alloy; thin-walled castings; casting process
- 摘要:
- 某航空壳体铸件为 ZL205A 铝合金，其壁厚不均，最小壁厚 2.2 mm。根据其结构特点及合金性能，确定了砂
型铸造生产工艺，设计了合理的开放式浇注系统，优化了造型、制芯、熔炼、浇注及热处理工艺参数。 结果表明，厚大部位
放置冒口、冷铁；砂 芯 烘 烤 温 度 为 300±10 ℃，保 温 2 h；采 用 六 氯 乙 烷 （C2Cl6）和 氩 气 复 合 精 炼 ；浇 注 温 度 控 制 在
735±5 ℃；热处理采用分段加热的方式时，可获得符合要求的薄壁 ZL205A 高强度铝合金优质铸件。
The casting of an aero shell was ZL205A aluminum alloy with uneven wall thickness, the minimum wall thickness was 2.2 mm. According to its structural characteristics and alloy properties, the sand casting process was determined, a reasonable open gating system was designed, and the process parameters of molding, core making, smelting, pouring and heat treatment were optimized. The results show that the riser and cold iron are placed in the thick part. The core was baked at 300 ±10 ℃ for 2 h. Using hexachloroethane (C2Cl6) and argon composite refining; The pouring temperature is controlled at 735±5 ℃; The high quality casting of thin wall ZL205A high strength aluminum alloy can be obtained when the heat treatment is performed by the way of section heating.