为了使铸件水爆清砂取得予期的效果,控制好铸件的入水温度是一个很重要的方面。目前最普遍的控制温度的方法,就是掌握铸件在砂型内的保温时间。由于铸件一般在400～600℃范围内可以进行水爆,所以铸件保温时间可以在一个范围内变动。然而,对于壁薄、泥芯大的铸件,铸件降温快,保温时间要求比较准确、可靠。否则,水爆就会失败。对于中、大型铸件, In order to make the blasting water of castings get the desired effect, it is very important to control the water temperature of the castings. At present, the most common method of temperature control is to grasp the holding time of the casting in the sand mold. As the casting is generally in the range of 400 ~ 600 ℃ can be water burst, so the casting holding time can be varied within a range. However, for the thin wall, mud core castings, casting rapid cooling, insulation time requirements more accurate and reliable. Otherwise, the water burst will fail. For medium and large castings,