The invention relates to the technical field of valve body
casting and discloses a high-temperature high-pressure ultralow
sulfur-and-
phosphorus valve body
casting forming process. A plane in which the centers of three
pipe openings of a high-temperature high-pressure ultralow
sulfur-and-
phosphorus valve body
casting part are located is used as a parting surface, first dead heads are arranged right above the three
pipe opening respectively, second dead heads are arranged above the intersected positions of all pipes of the valve body casting part respectively, a plurality of chilling blocks are arranged under the intersected positions of all the pipes of the valve body casting part respectively, the chilling blocks are separated from the casting part by
chromium ores, a bottom-returning type pouring
system is adopted for pouring, a cross gate is positioned under the valve body casting part and is connected with a plurality of inner gates on the same horizontal plane, and an outlet in the top end of each inner gate is formed in the wall, close to the end surface, of the corresponding
pipe opening. The valve body produced by adopting the casting forming process has the good casting forming quality, the formed matrix structure is compact, the CAE (
Computer Aided Engineering)
simulation technique is adopted, the production period of the casting part is shortened, the casting part manufacturing process is reasonably optimized, models and molding materials can be saved, the casting part production cost is reduced and the high economic benefit is achieved.