发动机缸盖用Al-6Si-3.5Cu-0.3Mg合金的熔炼工艺研究
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摘要
对发动机缸盖用Al-6Si-3.5Cu-0.3Mg合金进行精炼、变质和晶粒细化等熔炼工艺研究。结果表明,Al-6Si-3.5Cu-0.3Mg合金采用旋转喷吹精炼处理工艺可取得良好的精炼效果,并且静置时间应控制在1.5h之内;采用Al-10Sr中间合金作为变质剂,当Sr的加入量为0.06%时,可获得较好的变质效果;采用Al-5Ti-1B中间合金进行细化晶粒处理,其加入量为3%时具有较好的细化效果。
The smelting process such as refining,modification and grain refinement of Al-6Si-3.5Cu-0.3Mg alloy for engine cylinder head was investigated.The results show that the Al-6Si-3.5Cu-0.3Mg alloy can achieve the satisfied refining effect by rotary injection refining process,and the holding time should be controlled within 1.5 has much as possible.Al-10Sr master alloy was used as a modifier,and when the amount of Sr added was 0.06%,better modification effect could be obtained.The grain refining treatment was carried out by using Al-5Ti-1B master alloy,and the addition of 3%,had better refining effect.
The smelting process such as refining,modification and grain refinement of Al-6Si-3.5Cu-0.3Mg alloy for engine cylinder head was investigated.The results show that the Al-6Si-3.5Cu-0.3Mg alloy can achieve the satisfied refining effect by rotary injection refining process,and the holding time should be controlled within 1.5 has much as possible.Al-10Sr master alloy was used as a modifier,and when the amount of Sr added was 0.06%,better modification effect could be obtained.The grain refining treatment was carried out by using Al-5Ti-1B master alloy,and the addition of 3%,had better refining effect.
引文
[1]陈大辉,贾祥磊,朱秀荣,等.发动机缸盖铸造铝合金的研究进展[J].铸造技术,2010,31(7):882-887.
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[3]陈大辉,黄文淑,汤进军,等.Cu,Mg对Al-Si-Cu-Mg合金力学性能的影响[J].特种铸造及有色合金,2011,31(4):367-368.
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[8]崔勇,范学义.Al-10Sr对A356合金变质效果的研究[J].热加工工艺,2010,39(10):24-27.
[9]章爱生,黄为民.Al-Ti-B细化剂和Al-10Sr变质剂对A357合金的联合作用[J].铸造,2013,62(8):725-728.
[2]陈继森,王草原,白渌水.高强度铸造铝合金ZL702A缸盖材料的研究[J].材料工程,1990(4):21-23.
[3]陈大辉,黄文淑,汤进军,等.Cu,Mg对Al-Si-Cu-Mg合金力学性能的影响[J].特种铸造及有色合金,2011,31(4):367-368.
[4]彭学仕.影响铝及铝合金熔体氢含量的因素[J].轻合金加工技术,1986(7):44-47.
[5]蔡艳秀,萨支琳.铝合金熔体的熔剂精炼[J].轻金属,1991(11):57-60.
[6]康积行,傅高升.铝熔体中夹杂物和气体的行为[J].特种铸造及有色合金,1995(5):5-8.
[7]朱兆军,金云学.铝合金旋转喷吹净化工艺的研究[J].哈尔滨工业大学学报,2003,35(8):1 015-1 018.
[8]崔勇,范学义.Al-10Sr对A356合金变质效果的研究[J].热加工工艺,2010,39(10):24-27.
[9]章爱生,黄为民.Al-Ti-B细化剂和Al-10Sr变质剂对A357合金的联合作用[J].铸造,2013,62(8):725-728.