保定市金属雕塑厂

金属浇铸工艺

Metal casting process

1.失蜡铸造法。也称为脱蜡铸造，其原理非常简单：用蜡制成蜡像，然后用围模法浇上一层耐热的模型材料，将围模加热至蜡开始熔化，最后烧干，留下跟蜡像一个模样的空心，再将金属溶液倒入这个空心。一旦金属溶液冷却，围模就会脱落，一个形状相同的蜡像复制品就这样做成了。失蜡铸造法也是冶铸史上的一项重大发明，其铸造形状的精密程度和复杂程度是其他铸造方法无法比拟的。我国在战国时期就已经使用失蜡铸法。河南淅川下寺楚墓及湖北随县曾侯乙墓分别有精细繁缛特色的失蜡铸造青铜器出土。失蜡法铸造的特点在于蜡做的模型可以熔烧，根据其特点可得到造型很繁杂的铸造品。我国东汉时期在甘肃武威雷台汉墓中出土的“马踏飞燕”是失蜡铸造之后套装在一起的，也为失蜡技术的精品。

1. dewaxing casting. Also known as the lost wax casting, its principle is very simple: made from wax wax, and then use the investment poured a layer of heat-resistant material model will die around heating to wax melts, finally burned, leaving a hollow wax with the appearance of the metal solution into the hollow. Once the metal solution is cooled, the mold will fall off, and a similar form of wax copy is made. A major invention lost wax casting process is also the history of metallurgy, precision casting shape and complexity is unmatched by other casting methods. In the Warring States period, our country had used the method of losing wax and casting. Ceng Houyi Henan Xichuan temple and tomb tomb with the county of Hubei are fine harassment characteristics of lost wax casting bronzes. The characteristic of the dewaxing method is that the wax model can be burned, and a very complex casting product can be obtained according to its characteristics. Unearthed in Gansu Wuwei Han Lei Taiwan of China in the Eastern Han Dynasty "horse riding Chebi" after the lost wax casting suit together, but also for the lost wax technology boutique.

2.陶壳铸造法。它是一种非常新的技术，这项技术是在20世纪60年代中期从工业铸造中引进的，现在至少有95%的商业美术铸造厂用于铸造中。把陶壳固定在胶体硅上，将蜡像浸入胶浆，取出后再抹一层粉状的耐熔物质(石膏)。可以让混合物自然风干，也可以借助于风扇。重复前面的步骤7次左右，这样在蜡像及浇口系统周围就会形成一层厚度为3-8英寸的外壳。通过蒸气或者快速加热，蜡像将熔尽，而外壳则被加热到远远高于实心围模的温度，也可以除去残余的蜡，更重要的是可以对空壳中的陶瓷成分进行燃烧，使其更加坚固，能够承受住熔化金属所产生的压力。

2. pottery shell casting. It is a very new technology. The technology was introduced from industrial casting in the middle of 1960s. At present, at least 95% of commercial art foundries are used for casting. The pottery shell is fixed on the colloid silicon, and the wax image is immersed in the glue and then a layer of powdery resistant material (gypsum) is removed. The mixture can be dried naturally or by a fan. Repeat the preceding step about 7 times so that a layer of 3-8 inches thick is formed around the wax image and the gate system. By steam or rapid heating, melting wax, and the shell is heated to the temperature is much higher than that of the solid confining mode, can remove the residual wax, it is more important to the composition of ceramic shell for combustion, make it stronger, able to withstand the pressure generated by the molten metal.