Scoring Resistance of Gears with Plasma Diffusion Processing

等离子扩散处理齿轮的耐划伤性能

• 批准号: 14550134
• 负责人: KOHNO Masaki
• 金额: $ 1.86万
• 依托单位: Kure National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550134/
• 关键词: Plasma Diffusion Processing; Gear; Scoring; Plasma carburizzing; Plasma Nitriding; Radical Nitriding; Two-Roller Test; Flash Temperature Rise; ヘルツ接触; 動力循環式歯車試験機

To clarify the scoring resistance of SCM415H gears and SACM645 gears with plasma carburizing, plasma nitriding and radical nitriding, a gear tests was carried out using a power-circulating gear machine and a two-roller tests was carried out using an Amsler machine. Further, the scoring resistance was evaluated by the equation of the flash temperature rise caused by elliptically distributed heat source. The results are summarized as follows :(1)In the case of SCM415H gears, the scoring resistance of the gears with plasma carburizing was 785 N/mm and it was 2.2 times as large as that of the gears with gas carburizing. In the case of SACM645 gears, the scoring resistance of the gears with plasma nitriding was 721 N/mm and that of the gears with radical nitriding was 657 N/mm.(2)The critical surface temperatures for scoring of the gears with plasma carburizing, plasma nitriding and radical nitriding were about 130℃-150℃ higher than that of the gears with gas carburizing.(3)In the two-roller test, the coefficients of friction just before seizure of the rollers with plasma carburizing and gas carburizing were between 0.08 and 0.09. On the other hand, the coefficients of friction just before seizure of the rollers with plasma nitriding and radical nitriding were between 0.06 and 0.08.

为了明确SCM415H齿轮和SACM645齿轮等离子渗碳、等离子渗氮和自由基渗氮的耐划伤性能，利用动力循环齿轮机进行了齿轮试验，并利用阿姆斯勒机床进行了两滚轮试验。此外，通过由椭圆分布的热源引起的闪蒸温升方程评价耐划伤性。结果如下：(1)以SCM415H齿轮为例，等离子渗碳齿轮的划伤阻力为785 N/mm，是气体渗碳齿轮的2.2倍。以SACM645齿轮为例，等离子渗氮齿轮的划线阻力为721 N/mm，自由基渗氮齿轮的划线阻力为657 N/mm。(2)等离子渗碳、等离子渗氮和自由基渗氮齿轮的划线临界表面温度比气体齿轮高约130℃-150℃。 (3)在双辊试验中，等离子渗碳和气体渗碳的辊子咬死前的摩擦系数在0.08～0.09之间。另一方面，等离子氮化和自由基氮化的滚子咬合前的摩擦系数为0.06～0.08。

项目成果

Masaki KOHNO, Hiromasa NADANO, Masakazu NAKASAKO, Masahiro TOKUNAGA: "On the Flash Temperature Rise Caused by Moving Heat Source under Hertzian Contact"Memoirs of Kure National College of Technology. No. 65. 19-24 (2003)

Masaki KOHNO、Hiromasa NADANO、Masakazu NAKASAKO、Masahiro TOKUNAGA：“论赫兹接触下移动热源引起的闪温升高”吴国立工业大学回忆录。

河野, 灘野, 中迫, 徳永: "ヘルツ接触の場合の移動熱源による瞬間温度上昇について"呉工業高等専門学校研究報告. 65号. 19-24 (2003)

Kono、Nadano、Nakasako、Tokunaga：“赫兹接触时由于移动热源而导致的瞬时温度升高”吴国立技术大学研究报告第 65 期。19-24（2003 年）。