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为了降低钛制件的成本,采用了减少部件的重量或提高预期寿命的办法。现有工艺成本较高,主要是由于料边损失和机加工费用高昂。因而导致了七十年代初期开始的粉末钛制件的研制,或者采用锻造成型,或者压实至接近无余量外形。最近,钛合金粉末的热等静压工艺受到很大重视,它可以大大降低部件的采购价格和减少对锻件的机加工要求。 近两年来,热等静压工艺显示出生产复杂外形和接近无余量外形钛合金制件的能力,这项获得专利的陶瓷型法是美国坩埚钢公司按照空军和海军的大纲发展的。
In order to reduce the cost of titanium parts, the method of reducing the weight of parts or improving the life expectancy is adopted. The high cost of the existing process is mainly due to the high cost of material loss and machining. This led to the development of powdered titanium parts beginning in the early 1970s, either by forging or compaction to a near-zero shape. Recently, the hot isostatic pressing process of titanium alloy powder has received great attention. It can greatly reduce the purchase price of components and reduce the machining requirements for forgings. In the last two years, the hot isostatic pressing process has demonstrated the ability to produce complex shapes and near-zero outline titanium alloy parts, a patented ceramic-based method developed by the United States crucible steel company in accordance with Air Force and Navy guidelines.