| 摘要 |
A method of manufacturing spray formed metal tools is provided to manufacture spray formed metal tools with more increased strength by performing a hot pressing process using a hot press or a hot isostatic press before separating the thermal spray pattern and the thermal spray coating layer from each other after forming a thermal spray coating layer on a thermal spray pattern. A method of manufacturing a spray formed metal tool comprises: a step(S10) of making a thermal spray pattern; a step(S20) of thermal spraying metal onto the thermal spray pattern to form a thermal spray coating layer; a step(S30) of hot pressing the thermal spray pattern having the thermal spray coating layer formed thereon at a temperature of 600 to 900 deg.C; a step(S40) of separating the thermal spray coating layer from the thermal spray pattern; and a step(S50) of back-filling the thermal spray coating layer to manufacture a spray formed metal tool. The thermal spray pattern is made of ceramics or graphite in the step(S10). The metal in the step(S20) is carbon steel, or iron comprising chromium, silicon, and boron(Fe-Cr-Si-B). The hot pressing process in the step(S30) is performed by a hot press for heating and pressing the thermal spray coating layer-formed thermal spray pattern in a vacuum atmosphere, or a hot isostatic press for heating and pressing the thermal spray coating layer-formed thermal spray pattern in an inert gas atmosphere. |
