著者
中野 俊雄
出版者
公益社団法人 日本鋳造工学会
雑誌
鋳造工学 (ISSN:13420429)
巻号頁・発行日
vol.82, no.6, pp.380-387, 2010-06-25 (Released:2015-04-21)
参考文献数
24
著者
山田 銑一 塚原 茂男 大塚 英夫 廣崎 允位
出版者
公益社団法人 日本鋳造工学会
雑誌
鋳造工学 (ISSN:13420429)
巻号頁・発行日
vol.79, no.6, pp.291-296, 2007-06-25 (Released:2012-12-26)
参考文献数
9

Soldering reactions are commonly observed during high pressure die casting of aluminum alloys, and involve the formation of interfacial compound between the die and cast alloy. However, discussions on the effects of composition of die steel on interfacial reaction have not been reported. In this report, reaction couples were formed between various alloy steel (SK5, SKD61, SKD11) and molten AD12. The following results were obtained,   SKD11 containing lower silicon content than that of SKD61 reduced the soldering reaction. The mass loss of SKD11 reduced than that of SKD61 in molten AD12. In molten AD12, intermetallic layer composed of Al, Fe and Si was formed in every steel. The intermetallic layer was composed of two layers; the inner layer had a lower silicon content and the outer layer a higher content.   In molten AD12, the intermetallic layer SKD61 was formed of compact and broken layers. On the other hand, SKD11 showed a compact layer and a slight broken layer, while SK5 showed a compact layer but no broken layer.
著者
及川 勝成 目黒 賢一 八百川 盾 安斎 浩一 山田 養司 藤原 彰人 吉井 大
出版者
公益社団法人 日本鋳造工学会
雑誌
鋳造工学 (ISSN:13420429)
巻号頁・発行日
vol.81, no.5, pp.232-237, 2009-05-25 (Released:2014-08-12)
参考文献数
14
被引用文献数
1

Effects of mold temperature and injection pressure on mechanical properties and surface defects of Na2CO3-20mol%NaCl-30mol%KCl salt-mixtures made by high pressure die-casting machine were investigated. The bending strength of the salt-mixture was increased with increasing mold temperature, while the injection pressure in the temperature range from 39MPa to 78MPa was not influenced by the bending strength. Results of the Weibull statistics analysis suggest that increasing the mold temperature is effective for increasing the reliability of the strength as well as the bending strength, because the surface crack decreases with increasing mold temperature. In addition, we succeeded in making a salt core for single closed deck type cylinder blocks. These results suggest that the Na2C03-NaCl-KCl salt-mixtures made by die-casting machine are promising core material for aluminum alloy high pressure die-castings.