Evaluation of effect of ultrasonic degassing on components produced by low pressure die casting

被引：6
|
作者：
da Silva, M. [1 ,2 ]
Rebolledo, L. [1 ]
Pabel, T. [3 ]
Petkov, T. [3 ]
Planta, X. [4 ]
Tort, J. [5 ]
Eskin, D. [6 ,7 ]
机构：
[1] ASCAMM Technol Ctr, Cerdanyola Del Valles 08290, Spain
[2] Univ Autonoma Barcelona, Cerdanyola Del Valles 08193, Spain
[3] Austrian Foundry Res Inst, A-8700 Leoben, Austria
[4] Ultrasion SL, Cerdanyola Del Valles 08290, Spain
[5] Hornos & Met SA, Ajalvir 28864, Spain
[6] Brunel Univ, Brunel Ctr Adv Solidificat Technol, Uxbridge UB8 3PH, Middx, England
[7] Tomsk State Univ, Tomsk 634050, Russia
来源：
INTERNATIONAL JOURNAL OF CAST METALS RESEARCH | 2015年 / 28卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
Ultrasonic treatment; Aluminium alloy; Degassing; Casting; Hydrogen; Mechanical properties;
D O I：
10.1179/1743133614Y.0000000141
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Ultrasonic processing is known to be an efficient means of aluminium melt degassing with additional benefits of being economical and environment friendly. This paper describes the performance of ultrasonic degassing in preparing melt for low pressure die casting (LPDC). Efficiency of ultrasonic degassing is compared with conventional Ar rotary degassing by direct measurements of hydrogen concentration in the melt with a Foseco Alspek-H probe and by reduced pressure test in different stages of the casting process. Significant reduction in dross formation along with similar efficiency of hydrogen degassing was shown for ultrasonic degassing as compared with conventional Ar rotary degassing. Mechanical properties, microstructure and porosity level of the components produced by LPDC after both degassing techniques are determined. Results show that the components produced after ultrasonic degassing treatment have similar hardness, tensile properties, porosity level and microstructure as the components degassed with conventional Ar rotary degassing.
引用
收藏
页码：193 / 200
页数：8
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