| Summary: | 碩士 === 國立高雄第一科技大學 === 機械與自動化工程所 === 92 === Hardening treatment is a necessary process for precision part. The process is often taken place off line from production, which usually leads to the increases of production cost. If part hardening can be made during machining, the efficiency can be affectively increased. Grinding process is often applied for precision machining of steel component to reach the required accuracy. However, extremely high surface temperature rise might be induced during grinding. Due to the reason, grinding heat treatment was ever proposed to utilize the grinding heat as the heat source for part surface hardening. Currently, the proposed idea has been proven to be feasible if the appropriate grinding parameter is applied. While heating and cooling conditions for grinding heat treatment are still no fully discussed though, this process by no means is a controllable technique. This paper started from thermal point of view to observe the relationship among grinding heat flux, grinding zone temperature rise, and equivalent grinding parameters, and thus the possibility of surface hardening after grinding. The process, renamed as “thermal scanning hardening treatment of grinding”, was proven to be feasible by a designated grinding experiments in this paper. In the work, under different velocity rate lead to different result between q, and . Temperature of grinding zone could be controlled by manufacture parameter. After experiment, it has found that between and depth hardened layers of material exist. To summary, grinding heat behavior will influence harden of surface material, if it can build various grinding quantification model. The thermal scanning hardening treatment of grinding will be maturity
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