采用由滑轮增力机构和液压增力机构组成的二级增力机构加载的稳态热流方法, 通过自制的界面接触换热系数测量装置对AZ91D镁合金/H13模具钢界面的接触换热系数进行了研究, 分析了接触面载荷和温度对界面接触换热系数的影响。结果表明: 当接触面载荷较低时, 随载荷的增大, 接触换热系数变化较为显著, 在高载荷区域接触换热系数对载荷的敏感性有所下降; 接触面温度越高,接触换热系数越大, 在320~370 ℃温度范围内,界面接触换热系数随温度升高的变化不明显,越过此阶段后又随温度升高而增大。
所属栏目
试验研究国家科技攻关重大专项项目(G09003.2-1); 重庆市科技攻关项目(CSTC, 2009AA3012-3)
收稿日期
2012/11/302013/9/17
作者单位
王亚军:重庆交通职业学院汽车系, 重庆 402247
张涛:重庆交通职业学院交通运输系, 重庆 402247
罗杰:重庆交通职业学院汽车系, 重庆 402247
备注
王亚军(1986-), 男, 重庆人, 讲师, 硕士。
引用该论文:
WANG Ya-jun,ZHANG Tao,LUO Jie.Effects of Contact Surface Load and Temperature on Thermal Contact Conductance Coefficient of AZ91D Magnesium Alloy and H13 Die Steel Interface[J].Materials for mechancial engineering,2014,38(1):19～22
王亚军,张涛,罗杰.接触面载荷和温度对AZ91D镁合金/H13模具钢界面接触换热系数的影响[J].机械工程材料,2014,38(1):19～22
被引情况:
【1】
丁俭,范玮,赵乃勤,赵维民,王志峰,刘利华, "汽车铝合金轮毂低压铸造工艺的有限元模拟及优化",机械工程材料
40, 93-98(2016)
参考文献
【1】
LIANG S J, LIU Z Y, WANG E D. Simulation of extrusion process of AZ31 magnesium alloy［J］.Materials Science and Engineering: A,2009,499:221-224.
【2】
RAFIQUE M M A, IQBAL J. Modeling and simulation of heat transfer phenomena during investment casting［J］.International Journal of Heat and Mass Transfer,2009,52(7/8):2132-2139.
【3】
AWEDA J O, ADEYEMI M B. Experimental determination of heat transfer coefficients during squeeze casting of aluminium［J］.Journal of Materials Processing Technology,2009,209(3):1477-1483.
【4】
KUMAR G, HEGDE S,PRABHU K N. Heat transfer and solidification behaviour of modified A357 alloy［J］.Journal of Materials Processing Technology,2007,182(1/3):152-156.
【5】
GUO Zhi-peng, XIONG Shou-mei, LIU Bai-cheng, et al. Determination of the heat transfer coefficient at metal-die interface of high pressure die casting process of AM50 alloy［J］.International Journal of Heat and Mass Transfer,2008, 51(25/26):6032-6038
【6】
GUO Zhi-peng, XIONG Shou-mei, CHO S H, et al. Development of an inverse heat transfer model and its application in the prediction of the interfacial heat flux［J］.Chin Shu Hsueh Pao,2007,43(6):607-611
【7】
BECK J V. Nonlinear estimation applied to the nonlinear inverse heat conduction problem［J］.International Journal of Heat and Mass Transfer,1979,22(13):703-801.
【8】
SUN Zhi-zhong, HUA H, NIU Xiao-ping. Determination of heat transfer coefficients by extrapolation and numerical inverse methods in squeeze casting of magnesium alloy AM60［J］.Journal of Materials Processing Technology, 2011,211:1432-1440.
【9】
张立文,朱德才,邢磊,等.铝合金与 5CrMnMo模具钢界面接触换热系数实验研究［J］.大连理工大学学报, 2009, 49(1): 60-64.
【10】
赵建华,宋刚,王亚军,等.界面热力耦合传热系数测量系统及方法:中国, 201110024245.4［P］.2011-03-10.
【11】
MAROTTA E E , FLETCHER L S. Thermal contact conductance for aluminum and stainless steel contacts［J］.Journal of Thermophysics and Heat Transfer,1998,12(3):374-380.
【12】
WHITEHOUSE D J . Handbook of Surface Metrology［M］.Bristol: Institute of Physics Publishing,1994.
【13】
朱德才, 张立文, 裴继斌, 等.固态塑性成形过程中界面接触换热的实验研究［J］.塑性工程学报, 2008, 15(1): 92-96.
