Using Less Nobake Binder
Testing and charting variables can help reduce nobake binder percentage and lead to more consistent production. SHANNON WETZEL, SENIOR EDITOR
降低自硬砂粘结剂的用量
对影响因素进行测试并做成图表可以帮助降低自硬砂粘结剂的加入量， 并使生产保持一致性。
Shannon Wetzel，资深编辑 W
hen Mike Walker, main foundry super- intendent, Denison Industries, Denison, Texas, USA, sits down to dinner at home, he no longer dreads a phone call
from the off-shift with sand molding problems. Following a comprehensive and methodical 18-month investigation into its nobake sand molding operation, the aluminum metalcaster is producing 9-kg to 27-ton molds with 0.4 to 0.65% binder (down from 0.65 to 0.75%) like clockwork, and Walker can eat in peace. “We are very comfortable with [our binder],” Walker said. “I never thought I would say that. We’re so comfortable with it now, operators hardly ask ques- tions about it. We don’t have the common problems from the process.” Previously, Denison
experienced occasional soft spots on cores or poor mixes
当
德克萨斯丹尼森工业公司的铸造主管迈克• 沃克坐在家吃晚饭时，他不再害怕下班时从
电话中听到造型出了问题。经过18个月对自硬砂成型 操作进行的全面且有条理的调查，该铝铸造厂可以全天 生产9公斤至27吨的砂型 （20磅至30吨），仅需要 0.4至0.65％的粘结剂（从 0.65降至 0.75％），现在 沃克能安心地吃饭了。 沃克说：“我们对于 我们的粘结剂非常满意， 我从来没有想过我会说这 些。我们非常满意，操作 者几乎不问关于它的问 题。我们并没有在这个过 程中遇到常见的问题。“ 此前，丹尼森偶尔经历 砂芯过软或混砂不好导致 的砂型质量差。从而导致 了整个工序的停滞。 据Walker说，丹尼森 工业公司的主要问题是与
After comprehensive testing of its molding operations, Denison Industries reduced its binder level to 0.4% while improving sand and core quality.
在对造型过程进行全面测试 后，丹尼森工业公司粘结剂 的水平降到0.4％，同时提高 了砂型和砂芯的质量。
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FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION Spring 2012
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