| 摘要 |
<p>The invention relates to a series of tool steels for spray forming die inserts comprising iron, carbon, silicon, manganese, chrome, molybdenum and vanadium. According to the invention the vanadium content is over 1,4 w-%. Further more the invention relates to a method of rapid tooling by spray forming in which a melted tool steel is as above, and it is atomized and sprayed onto a ceramic mould under the atomizer. Further more the ceramic mould is rotated under the atomizer and the rotating axis of the mould is tilted from the spraying direction to a deposition angle.</p> |
