نتایج جستجو برای: grinding and etching

تعداد نتایج: 16832322  

Journal: :Applied sciences 2022

The Barkhausen noise (BN) analysis is a method increasingly used for the post-process assessment of thermo-mechanical surface damages from grinding and has several advantages compared with established nital etching method. In-process measurement BN not been industrially yet, but basics have already developed promise time savings by avoiding spent on inspections after grinding. Furthermore, it b...

Surface roughness is a significant parameter which determines the efficiency of optical components. Surface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. It is meaningful to rapid evaluate the surface roughness through the measurement of different grinding parameters. In this study, a cup diamond wheel (D64) is used in grinding pr...

Journal: :journal of modern processes in manufacturing and production 0
vahid barahimi department of mechanical engineering, najafabad branch, islamic azad university, najafabad, iran masoud farahnakian 1department of mechanical engineering, najafabad branch, islamic azad university, najafabad, iran

surface roughness is a significant parameter which determines the efficiency of optical components. surface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. it is meaningful to rapid evaluate the surface roughness through the measurement of different grinding parameters. in this study, a cup diamond wheel (d64) is used in grinding pr...

Abstract Background and aim: Over the years, improvments have been done to simplify clinical bonding procedure. One of these material is Transbond™ Plus Self Etching. The aim of this study was to evaluate the effect of saliva contamination and reusing Transbond™ Plus Self Etching Primer (SEP) on shear bond strength of orthodontic brackets. Materials and Methods: Fifty premolars divided into fiv...

Journal: :journal of dental research, dental clinics, dental prospects 0
abdolrahim davari mostafa sadeghi hamid bakhshi

background and aims. er:yag laser irradiation has been claimed to improve the adhesive properties of dentin; therefore, it has been proposed as an alternative to acid etching. the aim of this in vitro study was to investigate the shear bond strength of an etch-and-rinse adhesive system to dentin surfaces following er:yag laser and/or phosphoric acid etching. materials and methods. the roots of ...

2001
Weimin Lin Hitoshi Ohmori Nobuhide Itoh Jun Qian Masahiro Anzai

In recent years, the establishment of an ultimate machining method for realizing further ultra precision, ultra smoothness, and ultra micronization is becoming increasingly essential in the manufacture of various microdevices, which are functional structures. This need demand is particularly strong in the areas of object electronics, mechatronics, biology, and medicine. The accuracy sought rang...

Surface roughness is a significant parameter which determines the efficiency of optical components. Surface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. It is meaningful to rapid evaluate the surface roughness through the measurement of different grinding parameters. In this study, a cup diamond wheel (D64) is used in grinding pr...

Journal: :journal of mining and environment 2015
m. shamsi m. noparast seyyed z. shafaie m. gharabaghi s. aslani

copper smelting slags are hard materials. therefore,to recover their copper by flotation method, grinding should be carried out to obtain optimal particle size. copper smelting slags in the bardeskan district, with work index of 16.24 kwh/st, were grinded for 65 minutes to reach an acceptable degree of freedom for the flotation tests, with particle size of 80%, smaller than 70 μm. with this gri...

Grinding is finishing process aimed at achieving surface quality and dimensional accuracy in workpieces with tight tolerances especially from materials with a high degree of hardness and strength. The grinding process of superalloys is faced with problems and challenges caused by the generation of excessiveheatas well as the adhesion of workpiecematerialon the grinding tool. Therefore, in-depth...

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