著者

富澤 雅美 大門 弘典

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.85, no.12, pp.900-905, 2013-12-25 (Released:2018-01-01)

参考文献数

14

著者

高柳 弘明 岡本 守

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.69, no.12, pp.1050-1053, 1997-12-25 (Released:2014-12-18)

参考文献数

1

被引用文献数

1

著者

片島 三朗 田島 俊造 小竹 伸典

出版者

公益社団法人 日本鋳造工学会

雑誌

鋳物 (ISSN:00214396)

巻号頁・発行日

vol.53, no.6, pp.289-294, 1981-06-25 (Released:2012-02-16)

参考文献数

5

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Hot sand is produced with the systematization and speeding up of the casting line and is causing various problems. The relationship of compression strength, permeability, compactability and surface stability to sand temperature under various conditions was clarified, and variance of the properties of the hot sand when left to stand for given periods of time in air was also determined. A laboratory mixer was improved to enable high precision mixing of hot sand of the desired temperature. It was comfirmed that there is almost no change in the properties of the sand itself, but it was found that care must be taken because the values of permeability and compactability, when dealt with by the usual method, turn out to be altogether different from what they really are. Further, the importance of sand control from the time of mixing until molding has been confirmed, for, when the hot sand is left to stand in air, the variance becomes great, especially when the moisture is low (less than 3%) due to elevation of the temperature of the sand and prolongation of the time it is left standing.

著者

坂代 一郎

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.85, no.12, pp.906-910, 2013-12-25 (Released:2018-01-01)

参考文献数

2

著者

吉沢 亮 山浦 秀樹 寺山 正志

出版者

公益社団法人 日本鋳造工学会

雑誌

鋳造工学 全国講演大会講演概要集

巻号頁・発行日

vol.146, pp.26-26, 2005

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.84, no.3, pp.165-169, 2012-03-25 (Released:2017-01-01)

参考文献数

13

著者

谷 和麻 堀川 紀孝 王 麟

出版者

公益社団法人 日本鋳造工学会

雑誌

鋳造工学 全国講演大会講演概要集 第170回全国講演大会講演概要集 (ISSN:18805388)

巻号頁・発行日

pp.85, 2017 (Released:2017-11-01)

著者

伊藤 敦 田崎 良佑 鈴木 薪雄 太田 和弘 寺嶋 一彦

出版者

公益社団法人 日本鋳造工学会

雑誌

鋳造工学 全国講演大会講演概要集

巻号頁・発行日

vol.168, pp.134-134, 2016

著者

中村 孝

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.2, pp.58-69, 2007-02-25 (Released:2015-01-13)

参考文献数

60

被引用文献数

1

著者

牟田口 元堂

出版者

公益社団法人 日本鋳造工学会

雑誌

鋳物 (ISSN:00214396)

巻号頁・発行日

vol.30, no.7, pp.541-547, 1958-07-25 (Released:2012-11-01)

参考文献数

4

被引用文献数

5

---

The reason why the molten metal does not penetrate into the openings of sand grains is because of its great surface tension.   Thus, the author thinks that the penetration or blow as the casting defects seems to be related to the surface tension of molten metal, so that the critical limit of penetration or blow and the relation between penetration and washes of sand molds were investigated by using mercury, which surface tension and density are similar to those of molten metal, in this report.   From the results of the experiment, (1) the pressure which causes the penetration is inversely proportional to the size of the mold opening (2) the penetrating pressure increases when the back pressure exists (3) when the back pressure beyonds its critical range, the blow occurs regardless of the state of mold surface.

著者

橋本 建次

出版者

公益社団法人 日本鋳造工学会

雑誌

鋳物 (ISSN:00214396)

巻号頁・発行日

vol.28, no.12, pp.899-904, 1956-12-25 (Released:2012-11-09)

参考文献数

12

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An equation of the combined permeability of facing and backing sands is introduced and as its application, the relationship between permeability and surface roughness of castings was studied.   Main conclusions obtained were as follows :   1) The combined permeability of molding sands is calculated by the following equation             [Written in non-displayable characters.].       where H is height of each layer, K is permeability.   2) The above equation can be applied extensively to values of the permeability with a good accuracy.   3) The surface roughness of castings takes a minimum to a value of the combined permeability, which is changed by the mold surface or sand grain size, that is, with finer surface roughness of the mold the value declines to lower permeability. (Fig. 3) Therefore, in order to obtain fine surface roughness of castings, the combined permeability of facing and backing sands should be controlled properly according to mold surface roughness or sand grain size.

著者

杉田 和彦

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.71, no.12, pp.864-868, 1999-12-25 (Released:2014-12-18)

参考文献数

3

著者

佐々木 大地 小綿 利憲 平塚 貞人 鹿毛 秀彦 藤島 晋平

出版者

公益社団法人 日本鋳造工学会

雑誌

鋳造工学 全国講演大会講演概要集

巻号頁・発行日

vol.167, pp.31-31, 2015

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

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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

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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.