| 摘要 |
<p>The present invention relates to an apparatus for efficiently removing the hidden residual stress during manufacturing a gray cast iron component. The present invention provides an apparatus for efficiently removing the hidden residual stress during manufacturing a gray cast iron component that makes the new technology of removing residual stress which allows residual stress hidden in a component to be exhausted by itself by applying vibration energy to the component for a short period of time at the general low temperature (0 to 300) when the residual stress of the gray cast iron component is removed. Therefore, the residual stress hidden in the component is efficiently removed. The quality is ensured, such as suppressing the dimension change before and after stress removal. Above all, the process is performed for a short period of time at the low temperature, thereby reducing productivity and costs. The process of removing residual stress using vibration and the process of heat treatment, such as oxy-nitriding, are simultaneously performed in a furnace, thereby improving the productivity by reducing the number of process.</p> |
