Purification effects of glass flux on A356 melt

来源期刊：中国有色金属学报(英文版)2002年第2期

论文作者：倪红军 孙宝德 蒋海燕 陈晨 丁文江

文章页码：204 - 209

Key words：JDN-Ⅱ flux; A356 alloy; degassing; borate glass with low melting-point

Abstract: In order to remove hydrogen and inclusions from A356 alloy melt, a low melting-point glass flux, JDN-Ⅱ，was developed. The results indicated that JDN-Ⅱ flux has distinct effect of purification and protection on A356 alloy melt. When the dosage of the flux was 3%, the content of hydrogen in A356 melt was only 2.6mL/kg at 857℃ and 0.7mL/kg even at 750℃. In the meantime, the mechanical properties of the alloy increase greatly with the covering of 3% JDN-Ⅱ flux. Compared with no flux, the tensile strength of A356 alloy increases by 9.42% and the elongation inc r eases by 22%. The purification mechanism of JDN-Ⅱ glass flux was discussed too.