發(fā)布時(shí)間：2018-11-22 17:43

【摘要】：利用數(shù)值模擬和試驗(yàn)的方法,研究了鑄造生產(chǎn)用型砂的熱物性參數(shù)。結(jié)果表明:型砂與鑄件間距離對(duì)澆注后型砂溫度變化影響明顯;型砂導(dǎo)熱系數(shù)隨溫度升高呈現(xiàn)"V"形變化趨勢(shì),即當(dāng)型砂溫度低于400℃時(shí),型砂導(dǎo)熱系數(shù)下降,溫度高于400℃后,導(dǎo)熱系數(shù)增加;而型砂的比熱則呈現(xiàn)隨溫度升高而升高的趨勢(shì),但溫度低于600℃時(shí),比熱明顯增加,當(dāng)溫度高于600℃時(shí),比熱增加緩慢。
[Abstract]:The thermal properties of molding sand for casting production were studied by numerical simulation and test. The results show that the distance between mold sand and castings has an obvious effect on the temperature change of mold sand after pouring. The thermal conductivity of molding sand changes with the increase of temperature, that is, when the temperature of molding sand is lower than 400 鈩，

本文編號(hào)：2350100