亚博足彩

压铸铝模具加工过程中常见的问题是哪些

时间:2015-12-01 16:56 作者:羽丰模具 点击: 次

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   压铸铝模具加工过程中出现的问题第5种:疑惑为什么有些铝压铸件在磨光时会有黑斑?原因有几种:可能是氧化矽或氧化铝锭解决问题。但最大可能性来自于脱模剂,喷太多脱模剂或脱模剂的有机物含量过高。这些有机物在热溶铝的温度下,有些被还原成碳元素,有些变成有机大分子聚合物。碳分子和聚合物混合,在铝铸件形成时,被包含在表层成为我们看见到的黑斑。所以减少喷涂剂的浓度,改用别的喷涂剂;或加长喷涂后的吹风时间。

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