紧凑型锻钢截止阀体积小，重量轻，强度高，结构合理，受到用户的欢迎。截止阀阀体（图１）的机加工工艺为模锻毛坯→热处理→喷丸→检验→加工中法兰平面、止口及中孔→加工两端面、承插孔及流量孔→钻铰中法兰螺栓孔→钻两端斜孔→堆焊密封口→精车密封面→去毛刺→成品... Compact forged steel globe valve small size, light weight, high strength, reasonable structure, by the user’s welcome. Shut-off valve body (Figure 1) machining process forging blank → heat treatment → shot peening → test → machining flange plane, the mouth and the hole → processing both ends, socket and flow hole → drill hinge Flange bolt hole → drill both ends of the oblique hole → surfacing sealing → fine car sealing surface → deburring → finished product ...