Process fluids for abrasive machining

2022 ◽  
pp. 615-652
Author(s):  
Bahman Azarhoushang
Keyword(s):  
Abrasive Machining

Surface treatment of parts in aircraft engineering

2020 ◽  
pp. 68-72
Author(s):  
S.N. Polyanskiy ◽  
S.V. Butakov ◽  
I.S. Olkov ◽  
V.A. Aleksandrov
Keyword(s):  
Surface Treatment ◽  
Aircraft Engine ◽  
Abrasive Machining ◽  
Coating Application ◽  
Aircraft Engineering ◽  
Surface Jet ◽  
Blade Coating

The effectiveness of using jet-abrasive machining of aircraft engine parts is shown. The results of this treatment are shown in order to prepare surfaces for coating application and repair. Keywords: surface, jet-abrasive machining, abrasive, roughness, motor blade, coating. [email protected]

scholarly journals Applications of Additively Manufactured Tools in Abrasive Machining—A Literature Review

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1318
Author(s):  
Mariusz Deja ◽  
Dawid Zieliński ◽  
Aini Zuhra Abdul Kadir ◽  
Siti Nur Humaira
Keyword(s):  
Rapid Tooling ◽  
Rapid Manufacturing ◽  
Abrasive Machining ◽  
Production Methods ◽  
Industrial Environment ◽  
Hard And Brittle Materials ◽  
3D Printed ◽  
Abrasive Tools ◽  
Machine Parts ◽  
Further Development

High requirements imposed by the competitive industrial environment determine the development directions of applied manufacturing methods. 3D printing technology, also known as additive manufacturing (AM), currently being one of the most dynamically developing production methods, is increasingly used in many different areas of industry. Nowadays, apart from the possibility of making prototypes of future products, AM is also used to produce fully functional machine parts, which is known as Rapid Manufacturing and also Rapid Tooling. Rapid Manufacturing refers to the ability of the software automation to rapidly accelerate the manufacturing process, while Rapid Tooling means that a tool is involved in order to accelerate the process. Abrasive processes are widely used in many industries, especially for machining hard and brittle materials such as advanced ceramics. This paper presents a review on advances and trends in contemporary abrasive machining related to the application of innovative 3D printed abrasive tools. Examples of abrasive tools made with the use of currently leading AM methods and their impact on the obtained machining results were indicated. The analyzed research works indicate the great potential and usefulness of the new constructions of the abrasive tools made by incremental technologies. Furthermore, the potential and limitations of currently used 3D printed abrasive tools, as well as the directions of their further development are indicated.

Observation in the Surface Roughness of Silicon Wafer during Semi-Fixed Abrasive Machining with Large Grains

2009 ◽  
Vol 69-70 ◽  
pp. 253-257
Author(s):  
Ping Zhao ◽  
Jia Jie Chen ◽  
Fan Yang ◽  
K.F. Tang ◽  
Ju Long Yuan ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Quality ◽  
Silicon Wafer ◽  
Processing Parameters ◽  
Wafer Surface ◽  
Abrasive Machining ◽  
Fixed Abrasive ◽  
Is Failure ◽  
Better Than

Semi-fixed abrasive is a novel abrasive. It has a ‘trap’ effect on the hard large grains that can prevent defect effectively on the surface of the workpiece which is caused by large grains. In this paper, some relevant experiments towards silicon wafers are carried out under the different processing parameters on the semi-fixed abrasive plates, and 180# SiC is used as large grains. The processed workpieces’ surface roughness Rv are measured. The experimental results show that the surface quality of wafer will be worse because of higher load and faster rotating velocity. And it can make a conclusion that the higher proportion of bond of the plate, the weaker of the ‘trap’ effect it has. Furthermore the wet environment is better than dry for the wafer surface in machining. The practice shows that the ‘trap’ effect is failure when the workpiece is machined by abrasive plate which is 4.5wt% proportion of bond in dry lapping.

Methodology for Evaluation of Treated Steels and Alloys in Abrasive Processing

2021 ◽  
Vol 410 ◽  
pp. 262-268
Author(s):  
Vyacheslav M. Shumyacher ◽  
Sergey A. Kryukov ◽  
Natal'ya V. Baidakova
Keyword(s):  
Physical And Mechanical Properties ◽  
Metals And Alloys ◽  
Grinding Wheel ◽  
Measuring Instruments ◽  
Abrasive Machining ◽  
Machining Performance ◽  
Abrasive Grains ◽  
Abrasive Tools ◽  
Composition Structure ◽  
Grinding Operations

One of the critical physical and mechanical properties of metals and alloys is the suitability for abrasive machining. Machining by abrasive tools is the final operation that sets the desired macro-geometry parameters of processed blanks and microgeometry parameters of processed surfaces such as roughness and length of a bearing surface. Abrasive machining determines the most important physical and mechanical parameters of a blank surface layer, i.e. stresses, phase composition, structure. Machinability by abrasive tools depends on the machining performance affected both by the blank material properties and various processing factors. In our previous studies, we proved that during abrasive machining the metal microvolume affected by abrasive grains accumulates energy. This energy is used for metal dispersion and is converted into heat. According to the theoretical studies described herein, one may note the absence of a reliable and scientifically valid method as well as measuring instruments to determine the machinability of metals and alloys by abrasive tools. For this reason, we suggested a method simulating the effect the multiple abrasive grains produce in a grinding wheel, and enabling us to identify machinability of metals and alloys, select the most efficient abrasive materials for machining of the same, and form the basis for development of effective grinding operations.

Non-Contact Ultrasonic Abrasive Machining of Wire-Electrical Discharge Machined SUS304 Steel

2017 ◽  
Author(s):  
K. L. Tan ◽  
S. H. Yeo
Keyword(s):  
Material Removal ◽  
Cavitation Erosion ◽  
Removal Rate ◽  
Recast Layer ◽  
Ultrasonic Machining ◽  
Abrasive Machining ◽  
Efficient Removal ◽  
Abrasive Particles ◽  
The Poor ◽  
Lower Material

Non-contact ultrasonic abrasive machining (NUAM) is a variant of ultrasonic machining (USM). In NUAM, material is removed predominantly by cavitation erosion in abrasive slurry. Due to a significantly lower material removal rate than traditional USM, NUAM is investigated for its applicability on surface modification and finishing in this study. Experiments were conducted on SUS304 steel samples machined by wire electrical discharged machining (WEDM). Due to the thermal spark phenomenon during WEDM, a thermal recast layer, of thickness approximately 15 μm, is often left over on the specimen’s surface after the process. The undesired thermal recast layer contributes to the poor surface integrity of specimens. A NUAM system was configured using a 40 kHz ultrasonic system. Ultrasonic vibration amplitude of 70 μm at the horn tip was used to generate cavitation bubbles in the abrasive slurry. NUAM was found to be effective in removing the unstable thermal recast layers by means of cavitation erosion. As a result, the average surface roughness, Ra, of the specimens improved from approximately 2.5 μm to ∼1.7 μm after 20 minutes of processing time. Furthermore, the addition of abrasive particles was observed to aid in more efficient removal of thermal recast layers than a pure cavitation condition.

Study on Oil Adsorption and Polishing Characteristics by Novel Nanofiber Pad for Ultra-Precision Abrasive Machining

2017 ◽  
Author(s):  
Wei Wu ◽  
Lei Ma ◽  
Toshiki Hirogaki ◽  
Eiichi Aoyama ◽  
Morihiko Ikegaya ◽  
...  
Keyword(s):  
Present Report ◽  
Low Cost ◽  
Free Form ◽  
Polished Surface ◽  
Abrasive Machining ◽  
Abrasive Material ◽  
Care Environment ◽  
Die Surface ◽  
Ultra Precision ◽  
Oil Adsorption

Nanofibers can be used in such fields/applications as medical care, environment protection, apparel, and agriculture. We also believe this field will continue to show fast growth in the next few years. In this paper, we focused an abrasive machining application for oil adsorbing and polishing performances that achieved polymeric nanofiber mass production by a melt blowing method. In the present report, we proposed an oil adsorption physical model and compared experiment results to develop a nanofiber polishing pad. We used this model and calculated the mass ratio of oil to abrasive grains and abrasive size in abrasive machining when the fiber mass and bulk density were constant. For realizing a free-form nano surface, such as a molding die surface, we conducted base experiments with different fiber diameters and grain sizes and compared the base polishing characteristics with commercial felt buff. The polished surface roughness of the workpiece became smaller, and the polishing processes on it were more stable with this new, low cost abrasive material on abrasive machining. We believe that the nanofiber abrasive pad can be used in abrasive machining with oil slurry as a next-generation abrasive material.

Machined Surface Characteristics and Removal Mechanism of Soft and Brittle Solids

2010 ◽  
Vol 447-448 ◽  
pp. 183-187 ◽  
Author(s):  
Zhen Yu Zhang ◽  
Rudy Irwan ◽  
Han Huang
Keyword(s):  
Surface Characteristics ◽  
Abrasive Machining ◽  
Precision Grinding ◽  
Machined Surface ◽  
Brittle Solids ◽  
The Coefficient Of Friction ◽  
Ultra Precision ◽  
Ductile Removal ◽  
Fracture Features ◽  
Free Abrasive

Surface characteristics of CZT wafers machined using wire sawing, free abrasives lapping and polishing and ultra-precision grinding were investigated. Wire sawing resulted in the removal of material in both ductile and brittle regimes, but both polishing and grinding led to a ductile removal. The grinding produced very smooth surfaces free of embeddings and scratches, which is thus considered to have better machinability than the free abrasive machining. The nanoindentation and nanoscratch on MCT wafers at nanometric scales resulted in considerable plastic deformation, but no fracture features. The hardness of the MCT wafer was 500 to 550 MPa, and the coefficient of friction was particularly high, ranging from 0.45 to 0.55.

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