Residual Stresses — Measurement and Causes in Machining Processes

Brinksmeier, E.; Cammett, John T.; König, Wilfried; Leskovar, P.; Peters, Jacques; Tönshoff, Hans Kurt

doi:10.1016/s0007-8506(07)60172-3

Cited by 421 publications

(173 citation statements)

References 27 publications

Supporting

Mentioning

145

Contrasting

Unclassified

Order By: Relevance

“…This effect, as well as the general tendency of residual stress depth profiles in these samples, is in agreement with previous results published in the literature 20,21 . The superficial roughness of the coatings was measured and is shown in Table 4; values indicate that unfinished samples (GF and LF) had approximately the same degree of roughness, independently of the type of fuel and process used to produce their coatings.…”

Section: Residual Stresses and Coating Characterizationsupporting

confidence: 93%

Evaluation of the Influence of Surface Finishing on the Corrosion Resistance of HVOF Applied Inconel 625 Coatings on Steel

et al. 2017

View full text Add to dashboard Cite

In this work, the corrosion resistance of Inconel 625 coatings applied to AISI 4140 steel plates was evaluated. Coatings were produced by High Velocity Oxygen Fuel (HVOF) by use of two different equipment which use either kerosene (liquid) or propane (gas) as fuel. The resulting coatings were evaluated in two conditions: as-deposited and after a surface finishing process by grinding. Residual stress distributions in the coatings were characterized by X-ray diffraction and their morphology was verified through metallography and roughness measurements. Potentiodynamic polarization corrosion testing complemented their analysis. The results show a strong influence of the surface finishing process on the corrosion performance of the coatings.

show abstract

Section: Residual Stresses and Coating Characterizationsupporting

confidence: 93%

Evaluation of the Influence of Surface Finishing on the Corrosion Resistance of HVOF Applied Inconel 625 Coatings on Steel

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Figure 10 indicates that the stresses were compressive. This was first reported by Brinksmeier et al (1982) [13], using CBN grinding wheels. The higher thermal conductivity of CBN allows for smaller portion of the heat to enter the workpiece, thus reducing the thermal effects.…”

Section: 6mentioning

confidence: 88%

“…The present research involved the use of three methods in order to evaluate workpiece wear (the conventional method, the optimized method -with a nozzle similar to that proposed by Webster, and the minimum quantity lubrication -MQL method), using CBN wheels with low abrasive concentrations [13,14].…”

Section: Introductionmentioning

confidence: 99%

Influence of optimized lubrication-cooling and minimum quantity lubrication on the cutting forces, on the geometric quality of the surfaces and on the micro-structural integrity of hardened steel parts

et al. 2011

View full text Add to dashboard Cite

The is paper presents an analysis of the influence of minimum quantity lubrication (MQL), optimized and conventional cooling, using different cutting fluid volumes and flow rates, on the surface quality and integrity of hardened steel workpieces, in cylindrical plunge grinding with superabrasive CBN grinding wheels. The final quality of the workpieces were evaluated based on an assessment of output variables such as the behavior of: tangential cutting force, specific energy, surface roughness, roundness errors, acoustic emission, residual stresses, scanning electron microscopy (SEM) micrographs, and microhardness. The present analysis of the various forms of cutting fluid application identified cooling conditions which favor the minimization of cutting fluid usage, and shorter machining times without impairing the geometrical and dimensional parameters, surface finish and surface integrity of the workpieces. Among the various forms of cutting fluid application, optimized lubrication at higher outlet speeds showed the best performance, confirming the efficiency of the new nozzle concept employed in this study. The optimized and MQL processes were successful in maintaining the hardness and surface integrity of the ground workpieces. The only exception was the use of MQL with a flow rate of 40ml/h, which caused cracking and quenching of the workpiece surface. The lowest surface roughness values obtained with MQL were obtained using higher flow rates of lubricant. The surface roughness values obtained with MQL are high for the grinding process. Low-concentration CBN wheels, which are less expensive and subject to less wear, produce good results when associated with more efficient cutting fluid application techniques.

show abstract

“…During turning, mechanical and thermal loads cause a plastic deformation of the surface layer generating residual stress (RS) in the whole workpiece [2][3][4]. Residual stresses and their variations are always linked to distortion, depending on their dimensions and the workpiece cross section [4].…”

Section: Introductionmentioning

confidence: 99%

“…Residual stresses and their variations are always linked to distortion, depending on their dimensions and the workpiece cross section [4]. A heat treatment (stress relief annealing, hardening) changes the residual stress state which leads to changed equilibrium conditions, accompanied by a deformation of the workpiece [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of the turning process on the distortion of disks for gear manufacture

Kohlhoff

Sölter

Brinksmeier

2011

Prod. Eng. Res. Devel.

View full text Add to dashboard Cite

This study presents investigations on the fundamental mechanisms of part distortion during the machining of disks (cylindrical gear base bodies). The work focuses on the effects of machining induced residual stresses and inhomogeneous material removal. In this context the workpiece clamping was investigated as a major impact factor on the distortion. In order to analyze and describe the complex shape deviations, an appropriate distortion characterization method was developed. Since the distortion of disks directly affects the gear wheel quality, the results will help to understand the formation of gear distortion as well as to reduce and compensate it.

show abstract

Residual Stresses — Measurement and Causes in Machining Processes

Cited by 421 publications

References 27 publications

Evaluation of the Influence of Surface Finishing on the Corrosion Resistance of HVOF Applied Inconel 625 Coatings on Steel

Evaluation of the Influence of Surface Finishing on the Corrosion Resistance of HVOF Applied Inconel 625 Coatings on Steel

Influence of optimized lubrication-cooling and minimum quantity lubrication on the cutting forces, on the geometric quality of the surfaces and on the micro-structural integrity of hardened steel parts

Influence of the turning process on the distortion of disks for gear manufacture

Contact Info

Product

Resources

About