Manufacturing of high-precision surface micro-structures on stainless steel by ultrasonic impact peening

2021 ◽  
Author(s):  
Xuesen Zhao ◽  
Dongxu Zhao ◽  
Wangjie Hu ◽  
Junjie Zhang ◽  
Xiaohui Wang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Precision ◽  
Micro Structures

Manufacturing of high-precision surface micro-structures on stainless steel by ultrasonic impact peening

2021 ◽  
Author(s):  
Xuesen Zhao ◽  
Dongxu Zhao ◽  
Wangjie Hu ◽  
Junjie Zhang ◽  
Xiaohui Wang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Precision ◽  
Kinematic Hardening ◽  
Low Cost ◽  
Surface Texturing ◽  
Analytical Investigation ◽  
Single Crystal Diamond ◽  
Cemented Carbide Tool ◽  
Single Crystal Diamond Tool ◽  
Micro Structures

Abstract Ultrasonic impact peening (UIP) is not only a mature technique of surface treatment, but also a promising method of surface texturing for promoting performance and functionalities of components and devices. In the present work, we demonstrate the feasibility of applying UIP in the manufacturing of high precision surface micro-structures on 316L stainless steel using a YG6 cemented carbide tool. Specifically, analytical investigation of the material deformation map under UIP is carried out, which is validated by corresponding finite element simulations based on a combined nonlinear isotropic/kinematic hardening model, as well as experiments performed on home-made UIP apparatus. Finally, surface micro-structures of aligned grooves with a depth of 2 µm and a periodicity of 240 µm are fabricated by using UIP, and are subsequently subjected to linear reciprocating ball-disk sliding tests. Corresponding experimental results show that the micro-structures fabricated by UIP possess comparable accuracy of groove morphology and frictional properties with that fabricated by using ultrasonic elliptical vibration cutting using a single crystal diamond tool. The present work sheds lights on the low-cost fabrication of high precision surface micro-structures on ferrous metals by mature UIP technique.

The Use of Mn-Kα X-Rays and a New Model of PSPC in Stress Analysis of Stainless Steel

1982 ◽  
Vol 26 ◽  
pp. 209-216 ◽  
Author(s):  
Yasuo Yoshioka ◽  
Ken-ichi Hasegawa ◽  
Koh-ichi Mochiki
Keyword(s):  
Stainless Steel ◽  
Stress Analysis ◽  
High Precision ◽  
Proportional Counter ◽  
Stress Measurement ◽  
X Rays ◽  
New Model ◽  
Major Disadvantage ◽  
Position Sensitive

The authors previously reported stress measurement in stainless steel by the use of monochromatic Cr-Kβ X-rays and a position sensitive proportional counter. Results indicated that a stress value can be obtained with high precision on account of the subtraction of background and the elimination of αFe(211) peak by Cr-Kα X-rays. The major disadvantage of this method, however, is that the intensity of Kβ X-rays monochromatized is essentially weak and it is complicated to eliminate Kα X-rays for practical use.

scholarly journals Ultrafast 3D high precision print of micro structures for optical instrument calibration procedures

2017 ◽  
Vol 18 ◽  
pp. 22-30 ◽  
Author(s):  
Felix Ströer ◽  
Julian Hering ◽  
Matthias Eifler ◽  
Indek Raid ◽  
Georg von Freymann ◽  
...  
Keyword(s):  
High Precision ◽  
Optical Instrument ◽  
Instrument Calibration ◽  
Micro Structures

Temple of Zeus: A Micro Replica

2009 ◽  
Author(s):  
Aditya N. Das ◽  
Rakesh Murthy
Keyword(s):  
Light Source ◽  
High Precision ◽  
Silicon Substrate ◽  
Epoxy Adhesive ◽  
Silicon On Insulator ◽  
Etching Process ◽  
Ion Etching ◽  
Cost Efficient ◽  
Micro Structures ◽  
Microassembly Robot

A miniature replica of “Temple of Zeus” has been built on a 1cm2 silicon die. The micro components have been fabricated on SOI (silicon-on-insulator) wafer using photolithography patterning and DRIE (deep-reaction-ion-etching) process. These micro components have been picked up and manipulated using a vacuum micro needle mounted on a high precision microassembly robot. After alignment the components are bonded to the silicon substrate using epoxy adhesive. A spherical sapphire lens has also been mounted on a micro tower made of silicon. This lens acts as a light source which illuminates the micro temple by diffusing a ray of light onto it. This micro replica of “Temple of Zeus” and other micro structures as well, have been built as a part of research on automated 3D microassembly at ARRI’s Texas Microfactory which demonstrates the versatility in developing robust, cost efficient and heterogeneous microsystems of future.

Study on Boring Small Hole of Stainless Steel Dryly by Ultrasonic Vibration Double Cutter

2012 ◽  
Vol 490-495 ◽  
pp. 1551-1554
Author(s):  
Jian Zhong Zhang ◽  
Xin Wang ◽  
Yue Zhang
Keyword(s):  
Stainless Steel ◽  
Surface Quality ◽  
High Precision ◽  
Ultrasonic Vibration ◽  
Cutting Temperature ◽  
Small Hole ◽  
Dry Cutting ◽  
Shape Precision ◽  
Process System

It has been one of the difficulties that high-precision small hole on stainless steel is machined. The supersonic vibration boring acoustic system is installed in the lathe. The supersonic wave energy applies to tool to create pulse power on the cutting process. The separation vibration cutting is achieved by the pulse force. The comparative tests on boring surface quality are carried. The quality of surface machined by this method is compared to that by grinding. This cutting is the green cutting. The boring process system is stability. The cutting force is greatly reduced. The cutting temperature is at room temperature. The tool life is greatly increased. Surface quality and shape precision is greatly improved. The regulations of the ultrasonic vibration boring dry cutting of stainless steel are also summarized. The test results show that the ultrasonic vibration boring by double cutter is of very superior cutting mechanism and is a high-precision thin - long deep - hole machining of stainless steel materials, efficient cutting methods.

Micro-hot-embossing of 316L stainless steel micro-structures

2009 ◽  
Vol 97 (4) ◽  
pp. 925-931 ◽  
Author(s):  
G. Fu ◽  
S. B. Tor ◽  
N. H. Loh ◽  
D. E. Hardt
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Hot Embossing ◽  
Micro Structures

Fabrication of Plastic Micro Features on Microporous Mold by Hot Embossing

2011 ◽  
Vol 58-60 ◽  
pp. 822-826 ◽  
Author(s):  
Hang Liu ◽  
Hong Hu ◽  
Xing Wei Zhang
Keyword(s):  
Stainless Steel ◽  
High Precision ◽  
Ultrasonic Vibration ◽  
Hot Embossing ◽  
Ultrasonic Welding ◽  
Ultrasonic Energy ◽  
Ultrasonic Agitation ◽  
Welding Machine ◽  
Micro Features

The method of using ultrasonic heating to aid high precision moulding of micro features has been studies. The study developed a method of using ultrasonic vibration to heat the polymer and hot embossing high precision micro features. A commercial ultrasonic welding machine is converted to provide the heating of polymer and mold then into precision micro features for study of ultrasonic heating and the microflow of polymer under ultrasonic agitation. A stainless steel microporous mold of 200µm thick with through holes of 50µm and 200µm in diameter were used. Using a frequency of 35kHz, the microflow behavior of PC (Polycarbonate) and PE (Polyethylene) in the microchannels were investigated. The differing properties of microflow for these two types of polymer give indication on the theoretical and practical agreement on prediction of microflow under ultrasonic energy.

scholarly journals Intermediate die profile design for high-precision production of rectangular stainless-steel bars via new tandem drawing process

2020 ◽  
Vol 44 (3) ◽  
pp. 223-229
Author(s):  
Im-Jeong Cheon ◽  
Seong-Cheol Park ◽  
Hyun Park ◽  
Sung-Kyu Hong ◽  
Kyung-Hun Lee
Keyword(s):  
Stainless Steel ◽  
High Precision ◽  
Drawing Process ◽  
Steel Bars ◽  
Die Profile ◽  
Profile Design

Fundamental and Application of High Precision Laser Micro-Bending

2001 ◽  
Author(s):  
X. Richard Zhang ◽  
Xianfan Xu
Keyword(s):  
Experimental Data ◽  
Stainless Steel ◽  
High Precision ◽  
Surface Composition ◽  
Experimental Studies ◽  
Industrial Applications ◽  
Laser Operation ◽  
Laser Bending ◽  
Cw Laser ◽  
Operation Parameters

Abstract This paper presents the technique of high precision microscale laser bending and the study of the thermomechanical phenomena involved. The use of pulsed and CW lasers for microscale bending of ceramics, silicon, and stainless steel is demonstrated. Experimental studies are conducted to find out the relation between bending angles and laser operation parameters. Bending results obtained by a pulsed and a CW laser are compared. Changes of surface composition after laser irradiation are analyzed. Numerical calculations based on thermo-elasto-plastic theory are conducted and results are compared with the experimental data Examples of industrial applications of high precision laser bending are given.

Research on Intergranular Corrosion Behavior of Welded Joints of Nuclear Grade Stainless Steel

2014 ◽  
Vol 809-810 ◽  
pp. 390-394
Author(s):  
Meng Yu Chai ◽  
Can Liang ◽  
Dong Dong Wang ◽  
Quan Duan ◽  
Zao Xiao Zhang
Keyword(s):  
Stainless Steel ◽  
Welded Joints ◽  
Heat Input ◽  
Intergranular Corrosion ◽  
Weld Zone ◽  
Base Material ◽  
Delta Ferrite ◽  
316Ln Stainless Steel ◽  
Welding Heat Input ◽  
Micro Structures

The intergranular corrosion (IGC) behaviors of welded joints of 316LN stainless steel with different welding heat input were investigated in this study. The boiling nitric acid method was chosen to provide the IGC environment. The corrosion rates of different specimens were studied and the micro-structures of each zone (base material, heat affected zone and weld zone) were analyzed in detail. The results show that welding heat input affects IGC resistance remarkably and low welding heat input can reduce the IGC tendency. The IGC test can be divided into three stages, i.e. the initial corrosion stage, stable corrosion stage and rapid corrosion stage. The IGC resistance of WZ for 316LN stainless steel is better than that of BM and HAZ due to the beneficial role of delta ferrite.

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