湿式研削における熱流入割合の解析

湿磨热流入率分析

• 批准号: 62550100
• 负责人: 安井 平司
• 金额: $ 1.28万
• 依托单位: Kumamoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550100/
• 关键词: 湿式研削; 研削温度; 熱流入割合; 発生熱量; 沸騰; 接触孤; 研削液; CBN砥石

本研究では, 湿式研削温度の熱流入割合を解析するために, まず, 砥石をCBC120N100B, 工作物をSKD11焼入れ材とし, 水溶性のソリユブル型研削液を用いた場合の各種条件における発生熱量と接触孤内最大上昇温度を調べた. その結果にJ.C.J.aegerの移動熱源理論を適用して, 湿式研削の熱流入割合を求め, 乾式の結果と比較した. その結果, 乾式の場合の工作物側への熱流入割合は, 切込みが小さい範囲で60〜90%程度, 切込みが大きくなると40〜50%になるのに対し, 湿式では, 接触孤内における研削液が未遷移沸騰状態で10〜40%, 膜沸騰状態では乾式と同じ, 遷移沸騰状態では, 両状態の中間的な熱流入割合を示すことがわかった. すなわち, 研削液が接触孤内で液体の状態として存在する未遷移沸騰状態の範囲では, 発生熱の相当部分が研削液によって除去されることがわかった.次に, 研削液の希釈度や種類, および工作物の種類を変えて同様な検討を行い, 不水油は低除去速度の領域では, 水溶性研削液よりも発生熱除去効果は悪く, 工作物側への熱流入割合は30〜50%程度になるが, 遷移沸騰状態になりにくいため, 高除去速度領域では逆転し, 良くなることや, 工作物の違いによる熱物性値の変化によって熱流入割合が変わることを見い出した.さらに, これらの結果を基礎的かつ系統的に解析するために, 徴視的に, 切屑生成の際の発生熱の伝熱形態を考え, 乾式の伝熱形態, すなわち, 熱流入割合を基礎として, 湿式の熱流入割合を求める式を導出した. そして, その式を用いて求めた湿式の熱流入割合と, 直接J.C.Jaegerの理論を適用した式から求めた結果とを比較したところ, 未遷移沸騰状態の範囲で比較的良く一致した. このことから, 導出した式を用いて, 乾式の結果から, 湿式の熱流入割合の解析の可能性が見い出されたと言える.

In this study, the temperature of wet lapping was used to analyze the temperature of cutting, the temperature of wet lapping, the mainstone CBC120N100B, the working material, SKD11, and the water-soluble grinding fluid were used under various conditions to make contact with the maximum temperature temperature. The results show that the J.C.J.aeger moving source theory is used, the wet grinding tool flows into the cutting tool, and the dry test results are better. The results showed that the working material was cut into the cutting machine, the small temperature range was 60%, the temperature range was 60%, the temperature was 40%, the temperature was 40%, the temperature was 50%, the wet temperature was wet, the contact temperature was 10%, the film boiling state was 10%, the membrane boiling state was 10%, and the membrane boiling state was similar to that of the membrane boiling state. The flow in the middle of the container is cut off to show that the temperature is not valid. When the grinding fluid is in contact with the liquid, there is a temperature range in which the boiling state is not transferred, and a considerable part of the grinding fluid is removed. For the second time, the precision of the grinding fluid is the same as that of the working material, the water-soluble lapping fluid has a low removal speed, and the water-soluble grinding fluid has a low removal speed, and the water-soluble grinding fluid has a low removal rate. the workpiece flows into the cutting machine at the temperature of 30%, the temperature of the cutting machine is 30%, the temperature of the machine is low, and the speed field is reduced. The good news is that the work is in good condition, and that the physical properties are changed, so that the flow in and out of the machine is cut. As a result of the analysis of the basic system of the machine, the monitoring device, the chip and the chip are generated. The shape of the dry machine, the temperature, the temperature, the The formula is used to calculate the wet flow into the cut-off, the direct J.C.Jaeger theory is to use the formula to calculate the results, and the results are consistent without changing the boiling temperature range. You need to know how to use the device, the result of the dry test, the flow rate of the wet one, the possibility of the analysis, and the output of the device.