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首頁 > 供應產(chǎn)品 > 布石鑄鋁鑄鐵鑄鋼用樹脂覆膜砂 50-100目樹脂覆膜砂
布石鑄鋁鑄鐵鑄鋼用樹脂覆膜砂 50-100目樹脂覆膜砂
產(chǎn)品: 瀏覽次數(shù):325布石鑄鋁鑄鐵鑄鋼用樹脂覆膜砂 50-100目樹脂覆膜砂 
單價: 880.00元/噸
最小起訂量: 1 噸
供貨總量: 100000000 噸
發(fā)貨期限: 自買家付款之日起 天內(nèi)發(fā)貨
有效期至: 長期有效
最后更新: 2023-12-05 13:20
 
詳細信息
原產(chǎn)地 : 山東 品名 : 覆膜砂
品級 : 一級 密度 : 2.4-2.6g/cm3
含泥量 : <0.3% 包裝 : 袋裝

布石鑄鋁鑄鐵鑄鋼用樹脂覆膜砂  50-100目樹脂覆膜砂  

覆膜砂(coated sand)。砂粒表面在造型前即覆有一層固體樹脂膜的型砂或芯砂,有冷法和熱法兩種覆膜工藝。

冷法用乙醇將樹脂溶解,并在混砂過程中加入烏洛托品,使二者包覆在砂粒表面,乙醇揮發(fā),得覆膜砂;熱法把砂預熱到一定溫度,加樹脂使其熔融,攪拌使樹脂包覆在砂粒表面,加烏洛托品水溶液及潤滑劑,冷卻、破碎、篩分得覆膜砂。 用于鑄鋼件、鑄鐵件。


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