{"id":831,"date":"2022-09-17T21:54:11","date_gmt":"2022-09-17T13:54:11","guid":{"rendered":"https:\/\/gdballvalve.com\/?p=831"},"modified":"2022-09-17T21:56:53","modified_gmt":"2022-09-17T13:56:53","slug":"introduction-of-valves-casting-process","status":"publish","type":"post","link":"https:\/\/gdballvalve.com\/introduction-of-valves-casting-process\/","title":{"rendered":"Introduction of Valves Casting Process"},"content":{"rendered":"

The casting of valve body is an important part of its manufacturing process. The quality of castings determines the quality of the valves. Here are several casting process methods commonly used in the valve industry:<\/p>\n

Sand mold casting is one of the popular methods in the valve industry. According to the different binders used, it can also be divided into: wet sand casting, dry sand casting, sodium silicate sand casting and furan resin self-hardening sand casting, etc.<\/p>\n

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  1. Wet sand casting is a molding process using bentonite as a binder.<\/li>\n
  2. Dry sand casting is a molding process using clay as a binder, and a little bentonite can improve its wet strength.<\/li>\n
  3. Sodium silicate sand casting is a molding process using sodium silicate as a binder.<\/li>\n
  4. Furan resin self-hardening sand molding is a casting process with furan resin as a binder. At room temperature, the binder is chemically reacted under the action of a curing agent to solidify the sand.<\/li>\n<\/ol>\n

    In recent years, valve manufacturers have paid more and more attention to the appearance quality and dimensional accuracy of the castings. Because a good appearance is the basic requirement of the market, and it is also the positioning benchmark for the first machining process.<\/p>\n

    The most commonly used precision casting method in the valve industry is investment casting, which is briefly introduced as follows:<\/p>\n

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    Table of Contents<\/p>\n