The structure and making technology of hard alloy die used for continuously extruding multi - port aluminium flat tubes are analyzed. The way of making die and the process parameters are introduced.
分析了连续挤压多通道铝扁管用硬质合金模具的结构及加工工艺性，对该种模具的加工方法和加工电参数进行了介绍。
It was made from aluminium alloy, a kind of hard material, which can prevent the stuff you want to hold from being stolen.
它是由一种安全的材料—铝合金制成的。这种材料能很好地保护你想加密的物品。
An electrolyte solution with sulfuric acid, oxalic acid and tartaric acid as the main component for aluminium alloy hard anodization was developed.
研制了以硫酸、草酸、酒石酸为主要成分的铝合金硬质阳极氧化电解液。
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