Load Carrying Capacities of the Stainless Steel Gears with Multiple Coating Layr in Ultra-high Vacuum

多层涂层不锈钢齿轮在超高真空中的承载能力

• 批准号: 06650183
• 负责人: NADANO Hiromasa
• 金额: $ 1.28万
• 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 General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06650183/
• 关键词: Stainless gear; Sn-diffusing heat treatment; High vacuum; Grease lubrication; Four-ball test; Two-roller test; Gear test; Seizure resistance; 歯面摩擦損失率; 乾燥摩擦

The frictional and wear characteristics of the balls, the rollers and the gears of stainless steeel (SUS440C) of which the surface layr was thermally diffused after being Sn-plated were investigated by a four-ball machine, a two-roller machine and a power-circulating gear machine under grease lubrication.Further, the gear tests were carried out in the degree of about 10^<-4>Pa. From the tests, the following results were obtained :In the four-ball tests, the seizure resistance of the ball of which the diffused layr was approximately 6mum thick was 2-4 times larger than that of the untreated ball. With respect to the mean value of the critical surface temperature at seizure on both treated and untreated balls, it was 176C for the case of grease without MoS_2 additive, 176ﾟC with 3% additive, 191ﾟC with 10% additive, and 263ﾟC with 30% additive. The critical temperature at seizure was increasintg with increasing concentration of MoS_2 additive on grease.In the two-roller tests, the seizure resistance of the roller with the diffused layr was significantly larger than that without diffused layr. The seizure resistance was decreased with increasing concentration of MoS_2 additive on grease. Further, the critical surface temperature at seizure for the case of the treated roller was higher than 400ﾟC.The variation in the critical surface temperature was comparatively smaller than that in the pV value against the conformity of contacting condition on the rollers.In the gear tests under dry friction, the running time of the treated gears at the incipient stage of destructive surface failure by wear were significantly longer than that of the untreared gear.

在脂润滑条件下，用四球试验机、两辊试验机和动力循环齿轮试验机研究了表面经热扩散处理后的不锈钢（SUS 440 C）球、辊和齿轮的摩擦磨损特性，并在10 μ Pa左右的压力下进行了齿轮试验<-4>。从这些试验中，获得了以下结果：在四球试验中，其扩散层为约6 μ m厚的球的抗咬合性比未处理的球的抗咬合性大2-4倍。对于处理过的和未处理过的球，其临界咬接表面温度的平均值，在不含MoS_2添加剂的情况下为176 ℃，3%添加剂的情况下为176 ℃，10%添加剂的情况下为191 ℃，30%添加剂的情况下为263 ℃。在双辊试验中，有扩散层的轧辊比无扩散层的轧辊的抗咬合能力显著提高。随着MoS_2添加剂浓度的增加，润滑脂的抗咬合性能下降。此外，对于处理的滚子的情况，在咬合时的临界表面温度高于400 ℃。临界表面温度的变化相对于在滚子上的接触条件的一致性的pV值的变化较小。在干摩擦下的齿轮试验中，经处理的齿轮在磨损引起的破坏性表面失效的初始阶段的运行时间明显长于未经处理的齿轮。

项目成果

灘野・河野・中迫・岩野: "Studies on the load-carrying capacities of spur gears in high vacuum." Proc. of the 94' Inter. Gearing Conf.23-28 (1994)

Nada、Kono、Nakasako 和 Iwano：“94 Inter 齿轮承载能力研究”（1994 年）。

灘野・河野・中迫・岩野: "Studies on the load-carrying capacities of spur gears in high vacuum" Proceedigs of the 94′International Gearing Conference. 23-28 (1994)

Nada、Kono、Nakasako 和 Iwano：“高真空中正齿轮承载能力的研究”第 94 届国际齿轮会议论文集 23-28 (1994)。

Hiromasa NADANO,Masaki KOHNO,Masakazu NAKASAKO,Toshihiko IWANO: "Studies on Friction and Wear of Spur Gears in High Vacuum" Trans.JSME. Vol.61, No.589. 3702-3708 (1995)

Hiromasa NADANO、Masaki KOHNO、Masakazu NAKASAKO、Toshihiko IWANO：“高真空直齿轮摩擦磨损研究”Trans.JSME。

灘野・河野・中迫・岩野: "高真空中における平歯車の摩擦・摩耗に関する研究" 日本機械学会論文集. 61. 3702-3708 (1995)

Nada、Kono、Nakasako 和 Iwano：“高真空中正齿轮摩擦和磨损的研究”日本机械工程师学会汇刊 61. 3702-3708 (1995)。

Hiromasa NADANO,Masakazu NAKASAKO,Masaki, KOHNO: "Seizure Resistance of Thermally Diffused Ball After Sn-Plating in Four-Ball test." Trans.JSME. Vol.61, No.592. 4763-4768 (1995)

Hiromasa NADANO、Masakazu NAKASAKO、Masaki、KOHNO：“四球测试中镀锡后热扩散球的抗咬合性”。