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·The AISI 4140 was selected as the workpiece material with an average hardness of 34 HRC 250 mm long and 50 mm diameter It has high strength excellent machinability and excellent corrosion resistance AISI 4140 steel is low alloy steel with various alloying elements to improve its mechanical properties and resistance to corrosion
To the best of the authors knowledge no study has been conducted on the surface grinding of AISI 4140 steel to evaluate compare and optimize contact temperature MRR and machining cost in dry and wet machining conditions so far Again the combined methodology of RSM and DFA in optimization of machining parameter is rarely found in this
·Abstract This paper presents the influence of the grinding burnishing on surface integrity and corrosion performance of the laser cladded AISI 431 alloys As cladded specimens were first ground followed by ball burnishing To evaluate surface alteration and performance enhancement six major properties were measured and analyzed in terms of surface
·The surface of AISI 4140 mold steel was machined using laser beam scanning based on spatial components dots and istics through the grinding process and WEDM wire electro discharge machining were compared and evaluated Finally the residual stress of the surface subjected to grinding wire electro discharge machining and laser polishing
5 ·AISI 4140 ？ 。 AISI 4140 AISI 4140 54 59 。 AISI 4140 28
·AISI 4140 steel tensile strength is 95 Ksi 655 MPa and Yield strength is Ksi 415 MPa minimum The hardness of 4140 steel varies based on the toughness temperature and usually in the range of 217 HB to 241 HB Properties
·The surface roughness is less than µm by grinding and polishing The bionic microstructures on the sample surface are processed by a fiber laser marking machine with a power of 20 W and repetition accuracy is ± 2 µm AISI 4140 steel with bionic microstructure was obtained by laser marking Fig 2 b SnAgCu was filled in the
·AISI 4140 Chrome Moly High Tensile Steel is selected as workpiece material for present investigation It is generally supplied hardened and tempered to Condition T in sections up to 100 mm with a tensile strength of 850 1000 MPa and aiming for this strength range in
·A CrMo low alloy AISI 4140 steel plate of 70 mm × 30 mm × 10 mm with compositions of mass % C Cr Mo Mn Mo Si and bal Fe was employed in this study Prior to nitriding the samples were oil hardened from 850 °C and tempered at 570 °C to develop a uniform tempered martensite structure with a hardness of
·The present contribution aims to study the combination effects of pre and post nitriding grinding and gas nitriding parameters depth of cut abrasive type cooling mode and nitriding depth on the material grindability and generated surface integrity of AISI D2 tool steel As a result it is shown that grinding with sol gel abrasive type increases AISI D2 surface
·AISI 4140 is a medium carbon low alloy steel also called as chromium molybdenum steel is a well known commercial steel and most commonly used in the fabrication of machinery parts automobile & aircraft components and oil and gas transport pipe lines due to its superior mechanical properties [] This class of steel is generally categorized as quenched
·AISI 4140 alloy steel is annealed at 872°C 1600°F followed by slowly cooling in the furnace Tempering AISI 4140 alloy steel can be tempered at 205 to 649°C 400 to 1200°F depending upon the desired hardness level The hardness of the steel can be increased if it has a lower tempering temperature For example a tensile strength of 225
·An investigation on surface grinding of AISI 4140 hardened steel using minimum quantity lubrication MQL technique December 2010; International Journal of Material Forming 3 4 241 251;
·The AISI 4140 can also be successfully welded using E7018 ER70S 2 undermatching consumables or other most common carbon steel welding consumables although they result in softer weld metal as well as reduced mechanical properties of the weld compared to AISI 4140
·Mechanisms occurring within AISI 4140 steel 42CrMo4 due to thermal mechanical or mixed impacts were identified as work hardening stress relief recrystallization re hardening and melting
AISI 4140은 Cr Mo 합금 강재입니다 니켈 Ni 가 빠진 강재로 크롬과 몰리브덴이 합금된 강재입니다 JIS와 KS의 SCM440 강재와 그 성분에서는 비교 가능하지만 SCM440강재는 Ni가 %이하로 합금 되어 있고 AISI 4140 규정에 Ni가 합금 되지 않아 KS/JIS
·The most commonly used technique grinding which is extensively applied for surface finishing that extracts unwanted parts of the material in the form of small pieces to attain required accuracy
Round 1 Reviewer 1 Report Journal Coatings Ref manuscript ID coatings 1509973 Manuscript title Multi response optimization of surface grinding process parameters of AISI 4140 alloy steel using response surface methodology and desirability function under dry and wet conditions Comments to authors Although the manuscript entitled "Multi response optimization of
During surface grinding internal material loads are generated which take effect on the surface and subsurface zone of AISI 4140 steel High thermal loads can result in specific material
·Study of the simultaneous Grinding/Ball burnishing of AISI 4140 based on finite element simulations and experiments Yasmine Charfeddine Sawsen Youssef S Sghaier J Sghaier H Hamdi Engineering Environmental Science 2020; 21 PDF Save On The Temperature and Residual Stress Field During Grinding
·Charfeddine et al [29] studied the effect of grinding combined with ball burnishing on the residual stress of AISI 4140 through experiments and the finite element method FEM It was found that compressive residual stress results after the combined grinding/ball burnishing process are obtained in both directions and at a more important
·A peel grinding process is conducted with a high workpiece velocity and a high depth of cut using a conventional surface grinding machine and an electroplated CBN wheel with a custom shape
