{"id":180,"date":"2019-12-04T11:21:30","date_gmt":"2019-12-04T07:51:30","guid":{"rendered":"http:\/\/kiankhak.co\/en\/?page_id=180"},"modified":"2026-01-02T12:07:42","modified_gmt":"2026-01-02T08:37:42","slug":"casting-bentonite","status":"publish","type":"page","link":"https:\/\/kiankhak.co\/en\/products\/casting-bentonite\/","title":{"rendered":""},"content":{"rendered":"
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Casting Bentonite: Essential Benefits for Quality Casting<\/span> <\/strong><\/h1><\/div><\/div>
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Bentonite is one of the most common minerals in the foundry industry, valued for its unique properties\u2014particularly its high binding strength\u2014making it the primary binder in sand molds. Composed mainly of montmorillonite, a layered clay mineral, it swells upon contact with water to form a gel-like network with significant cohesion.<\/span><\/p><\/div><\/div>

Key properties that make bentonite indispensable in mold making include:<\/span><\/h2><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>
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  1. High binding strength: bentonite bonds sand particles together, providing mold cohesion and ensuring dimensional stability during casting.<\/span><\/li>
  2. Water absorption and swelling: upon hydration, bentonite expands, enhancing mold strength and flexibility, and preventing cracks during drying or thermal shock.<\/span><\/li>
  3.  Thermal stability: bentonite resists high temperatures, protecting the mold from degradation when in contact with molten metal\u2014essential for non-ferrous and high-melting-point alloys.<\/span><\/li><\/ol><\/div><\/div><\/div><\/div><\/div>
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