常州石蜡浇铸的注蜡过程

胶模开好后就能够进行注蜡操作了。注蜡操作应该留意对蜡温、压力以及胶模的压紧等因素。

After the mold is opened, wax injection operation can be carried out. Wax injection operation should pay attention to factors such as wax temperature, pressure and compression of mold.

常州石蜡浇铸制造蜡模使用的蜡一般是兰色的模型白腊，其消融温度在60℃左右，注蜡温度在65℃左右。还有一些其他颜色的白腊，性质略有不同。蜡温及打针压力是由注蜡机决议的。注蜡机的类别一般有风压式和真空式两种。这两种注蜡机的注蜡原理根本类似，就是使用气压将熔融状态的蜡注入胶模。两者的区别在于真空式注蜡机能够先将胶模抽真空，在向胶模注蜡；而风压式注蜡机只能直接向胶模注蜡。所以一般操作以真空式注蜡机比较简单掌握，而风压式注蜡机则需要具有必定的经历。

常州石蜡浇铸，中温蜡精密铸造，轴承座生产厂家

The wax used in making wax models is usually blue model paraffin. Its melting temperature is about 60 C and the injection temperature is about 65 C. There are also some other colors of paraffin, which are slightly different in nature. Wax temperature and injection pressure are determined by wax injection machine. There are two types of wax injection machines: air pressure type and vacuum type. The wax injection principle of the two wax injection machines is basically similar, that is, the melted wax is injected into the rubber mold by air pressure. The difference between the two is that the vacuum wax injector can vacuum the rubber mould first and inject wax into the rubber mould, while the air-pressure wax injector can only inject wax directly into the rubber mould. So it is easy to operate vacuum wax injector, while air pressure wax injector needs some experience.

常州石蜡浇铸注蜡机中的加热器和感温器能够使蜡液达到并坚持必定的温度。一般注蜡机中蜡的温度应该坚持在70~75℃之间，这样的温度能够确保蜡液的流动性。假如温度过低，蜡液不易注满蜡模，形成蜡模的残缺；反之蜡液温度过高，又会导致蜡液从胶模缝隙处溢出或从注蜡口溢出，简单形成飞边或烫坏手指。

The heater and thermoscope in the wax injection machine can make wax liquid reach and maintain a certain temperature. Usually the temperature of wax in the wax injection machine should be kept between 70 and 75 degrees Celsius, which can ensure the fluidity of wax liquid. If the temperature is too low, the wax liquid is not easy to fill the wax mold, resulting in the wax mold defects; conversely, the wax liquid temperature is too high, which will cause the wax liquid to overflow from the gap of the rubber mold or from the wax injection mouth, easy to form flash or burn fingers.

常州石蜡浇铸注蜡机蜡筒内的压力是由外接气泵供给的,一般应该坚持在0.5~0.7at(或kgf/cm2)即0.051~0.071Bar之间,也能够依据蜡模的体积和杂乱程度进行恰当的调整。

The pressure in wax drum of wax injection machine is provided by external air pump. It should be kept between 0.5 and 0.7at (or kgf/cm2), i.e. 0.051 to 0.071Bar. It can also be adjusted appropriately according to the size and complexity of wax mould.