我厂生产的一种双导轨床身,其导轨部分厚为40mm,宽80mm,其余部分壁厚均匀(约为20mm左右)。铸铁轮廓尺寸为4450mm×420mm×650mm,重为1800kg,毛重为2300kg,材质为HT200。 1.铸造工艺设计 我们采用水泥自硬砂实型铸造生产。机床床身导轨工作面朝下,由床身两端引入铁水。为提高浇注质量,我们采用了主、辅两套浇注系统。主浇注系统的直浇口直径为44mm,横浇口截面尺寸为高×宽 I plant a double-track bed, the guide part of the thickness of 40mm, width 80mm, and the remaining part of the wall thickness (about 20mm or so). Cast iron contour size of 4450mm × 420mm × 650mm, weighing 1800kg, gross weight of 2300kg, made of HT200. 1. Casting process design We use cement self-hardening sand solid casting production. Machine bed rails face down, the introduction of hot metal from both ends of the bed. To improve the casting quality, we use the main and auxiliary two sets of casting system. The main sprue system sprue diameter of 44mm, horizontal gate section size is high × width