Development of Shotless Peening System and Manufacturing Considering Preservation of Environment

考虑环境保护的无喷丸喷丸系统和制造的开发

• 批准号: 13555022
• 负责人: SOYAMA Hitoshi
• 金额: $ 5.63万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13555022/
• 关键词: Surface Modification; Peening; Cavitation; Fatigue Strength; Residual Stress; Shot Peening; Surface Roughness; Jet; 回折X線; 半価幅; ステンレス鋼; 浸炭材料; 圧縮残留応力; ノズル; 衝撃力

1.The cavitating jet in air was successfully realized using cavitation shotless peening system without a water-filled chamber. It was revealed that the cavitating jet in air was most powerful compared with a cavitating jet in water and a normal water jet in air.2.The erosion test and measurement of cavitation intensity were carried out at various conditions to measure the ability of cavitating jet in air, then the optimum condition of the cavitating jet was obtained.3.Several steel were peened by the cavitating jet in air, the residual stress was measured by an X-ray diffraction method. The introduction of compressive residual stress was demonstrated. It shows the possibility of the surface modification by using the cavitating jet in air.4.The optimum peening time was obtained from the relation of the peening time and the residual stress or the fatigue test at constant load changing with the peening time.5.In order to compare the proposed shotless peening considering the prevention of environment and the conventional shot peening, a rotating bending fatigue test was carried out, and it was shown that the improvement of fatigue strength by shotless peening was better than that of shot peening.6.In order to establish non-destructive testing method to evaluate the surface modification layer peened by the shotless peening, the residual stress and austenitic ratio were measured by using an X-ray diffraction method.7.The improvement of fatigue strength of gear was demonstrated by a bending fatigue test of gear tooth comparing the result of shot peening.8.In order to apply the shotless peening to various materials, the relation between the cavitation intensity and the materials properties was investigated, and the fundamental threshold level of materials for the cavitation impact was revealed.

1.空气中使用无水室的空化无he子，成功实现了空气中的空气射流。据揭示，与水中的塌陷喷气机和空气中的正常水喷射相比，空气中的塌陷喷气机。2。在各种条件下进行侵蚀测试和空化强度的测量，以测量空气中的洞穴式喷射能力，然后获得洞穴射流的最佳状态。3。cavital钢的最佳条件是通过cavite速度的速度散布在空气中的散布式射线，这是空气中的射线射线，这是一个空气中的散布量。表明了压缩残留应力的引入。它表明了通过空气中使用卡路射流进行表面修饰的可能性。4。从固定时间的关系和持续负荷时的残留压力或疲劳测试的关系中获得的最佳固定时间。5。在固定载荷时变化时。5。在拟议的无射击式驾驶中，考虑到环境的预防和常规的弯曲效果，并在弯曲的情况下进行了弯曲，并比较拟议中的无射线，并在弯曲的效果上进行了弯曲，并与之相比，并与弯曲的强度进行了弯曲，并在弯曲的范围内进行了弯曲，并且它是弯曲的弯曲。烤制比射击的更好。6。为了建立非破坏性测试方法，以评估通过无射线固定，剩余的压力和奥氏体比率通过X射线衍射方法来衡量的表面修饰层。7。7。研究了空化强度与材料特性之间的关系，并揭示了空化影响的基本阈值水平。

项目成果

K.Saito, (H.Soyama): "Improvement of Fatigue Strength of Mechanical Materials by a Cavitating Jet in Air"Proc. 38th JSME Meeting of Tohoku Branch. No.031-1. 58-59 (2003)

K.Saito，（H.Soyama）：“通过空气中的空化射流提高机械材料的疲劳强度”Proc。

H.Soyama: "Peen Forming of Duralumin Plate by Using a Cavitating Jet in Air"Proceedings of Fifth International Symposium on Cavitation. OS2-3-001(CDROM). 1-4 (2003)

H.Soyama：“利用空气中的空化射流对硬铝板进行喷丸成形”第五届国际空化研讨会论文集。

H.Soyama: "Measurement of Cavitation Intensity in Mercury"Proceedings of Fifth International Symposium on Cavitation. GS-11-010(CDROM). 1-5 (2003)

H.Soyama：“汞空化强度的测量”第五届国际空化研讨会论文集。

H.Soyama: "Relationship on Cavitation Shotless Peening between Residual Stress and Pressure Distribution of Cavitation Impact"Proc. Mechanical Engineering Congress, 2003 Japan. Vol.VI. 145-146 (2003)

H.Soyama：“空化无喷丸喷丸残余应力与空化冲击压力分布之间的关系”Proc。

H.Soyama: "Improvement of Fatigue Strength of Aluminum Alloy Casting by Cavitating Jet in the Air"Proc. 2002 Annual Meeting of JSME/MMD. No.02-05. 483-484 (2002)

H.Soyama：“通过空气中的空化射流提高铝合金铸件的疲劳强度”Proc。