Secondary Cooling in the Direct-Chill Casting of Magnesium Alloy AZ31

被引：26
|
作者：
Caron, E. [1 ]
Wells, M. A. [1 ]
机构：
[1] Univ Waterloo, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2009年 / 40卷 / 04期
关键词：
HEAT-TRANSFER COEFFICIENTS; SURFACE CRACK FORMATION; FLOW-BASED ANALYSIS; NUMERICAL-SIMULATION; START-UP; TEMPERATURE;
D O I：
10.1007/s11663-009-9254-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Secondary cooling information is critical when modeling the direct-chill (DC) casting process of magnesium alloys. However, accurate data for the heat flux in the secondary cooling zone are scarce, and most reported research is concerned with the DC casting of aluminum alloys. Cooling experiments that simulated the secondary cooling of magnesium AZ31 were conducted in order to observe the influence of various parameters on the different boiling-water heat-transfer phenomena. The heat flux in each boiling regime was quantified as a function of the cooling-water flow rate, water temperature, and initial sample temperature. Equations developed from the cooling experiments could be combined to build "idealized" boiling curves for a given set of DC casting conditions.
引用
收藏
页码：585 / 595
页数：11
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