它要求具有材料组织致密、导热性良好、耐高压不渗漏、水流无死角、高温下不开裂、风口不跑风、尺寸均匀等条件。根据上述条件和产品的结构,而确定制造工艺流程。 一、安全水箱的铸造 安全水箱见图2,材质为ZQSn2,含Sn<2.0％,Ca>98％;铸成的安全水箱经车削、钻孔、套丝后应进行15kg/cm~2水压试验,在10分钟内无渗漏、降压现象。 1.铸造工艺方案的选择 It requires the material with a compact structure, good thermal conductivity, high pressure without leakage, no water flow angle, high temperature does not crack, the outlet does not wind, the size and other conditions. According to the above conditions and product structure, and determine the manufacturing process. First, the safe water tank casting safety tank shown in Figure 2, the material is ZQSn2, containing Sn <2.0%, Ca> 98%; cast safety tank after turning, drilling, threading 15kg / cm ~ Test, no leakage within 10 minutes, antihypertensive phenomenon. 1. Casting process options