Forming process of large-diameter integrally-forged gate valve

The invention relates to a forming process of a large-diameter integrally-forged gate valve. The forming process comprises the following steps that firstly, a valve body of the gate valve is integrally forged; secondly, a first valve body sleeve and a second valve body sleeve are machined, specifica...

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Bibliographische Detailangaben
Hauptverfasser:	JI LEYAN, ZHU SHUN, CHENG XIAOFENG, WANG QIANGHUA, XIONG BO, LI GUANGDE, DONG JIACHANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FORGE FURNACES FORGING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAMMERING HEATING LIGHTING MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRESSING METAL PUNCHING METAL RIVETING TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a forming process of a large-diameter integrally-forged gate valve. The forming process comprises the following steps that firstly, a valve body of the gate valve is integrally forged; secondly, a first valve body sleeve and a second valve body sleeve are machined, specifically, a first valve body sleeve and a second valve body sleeve are inserted into a valve chamber, a first seat plate sealing ring is clamped between the first valve body sleeve and a first seat plate, a first sleeve sealing ring is clamped between the first valve body sleeve and a first small-diameter annular part, a second seat plate sealing ring is clamped between the second valve body sleeve and a second seat plate, and a second sleeve sealing ring is clamped between the second valve body sleeve and a second small-diameter annular part; thirdly, a cuboid-shaped flashboard is machined; fourthly, a valve rod is machined; and fifthly, a valve cover is cast or forged, the part, positioned outside the top surface of a