HIP CLADDING OF TOOLS
HIP CLADDING OF TOOLS
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工具的髋关节包层
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
W. Theisen
中科院分区：
文献类型：
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作者：
W. Theisen
热等静压熔覆是一种用于生产高效工具的涂层方法。除了传统的粉末冶金钢种外，MMC硬质相/金属粉末化合物也是可喷涂的涂层材料。当其抗磨料磨损时，如果其含有高达30体积%的尺寸为100 μm的硬质相，则后者被成功地使用。销-盘试验表明，如果调整粉末颗粒尺寸以获得硬相分散体，则耐磨性增加高达两个数量级。由于有目的地利用了硬质颗粒与金属基体之间的差异现象，使用在压制过程中形成的碳化钛可以实现有利的成本效益比。复合层需要与基材和涂层材料相匹配的热处理。不同的转变行为，可能会导致开裂的危险，可以适当地抵消真空炉处理，并可能采用热浴技术。
HIP cladding is a coating method to be used in the production o f efficient tools. Aside from the traditional PM steel grades MMC hard ph ase/metal powder compounds are recommendable coating materials. Whe n it comes to resist abrasive wear the latter are successfully employed i f they contain up to 30 vol% of hard phases sized 100 μm. Pin-on-disk tests show an increased wear resistance of up to two orders of magnitude if the powder particle size is adjusted such that a hard phase dispersion is obtained. A f avorable costbenefit ratio can be achieved using titanium carbides that fo rm during the compacting process due to the purposeful utilization of dif fus on phenomena arising between the hard particle and metal matrix. The composite layers require a heat treatment that is matche d o the substrate and coating material. The dissimilar transformatio n behavior that might lead to cracking hazards can be appropriately counteracted by vacuum furnace treatment and possibly applying hot bath techniques.