Carbon dioxide hardened sodium silicate sand swage sand shooting modeling method
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CRRC QIQIHAR ROLLING CO LTD
- Publication Date
- 2012-07-04
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to the field of casting molding, in particular to a carbon dioxide hardened water glass sand iron molding sand molding method. Background technique
[0002] Casting molding is a key process in the process of casting, which has a very important impact on the quality, manufacturing cost, production efficiency, environmental pollution and other aspects of castings.
[0003] In the traditional casting molding method, the template is first heated to 180-250°C and buckled on the iron mold; then, using compressed air, a type of molding sand, usually made of organic resin as a binder, is blown into the gap between the template and the iron film Then, blow hardening gas into the molding sand in the gap to make it harden and form a shell; separate the formwork and iron mold from the shell, and then transport the shell to the pouring site to wait for pouring. One of the main points of the above shell molding process is to use organic resin ...