Hard Machinable Machining of Cobalt-based Superalloy

Čep, Róbert; Janásek, Adam; Petrů, Jana; Čepová, Lenka; Czán, Andrej; Valíček, Ján

doi:10.21062/ujep/x.2013/a/1213-2489/mt/13/2/142

Cited by 29 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the rake face of the cutting tool, the temperature was higher, about 50 • C to 70 • C, than temperature on the flank face of the cutting tool [19]. Similar phenomena were observed with other superalloys [20]. When machining superalloys with ceramic tools, notch wear is present, which is correlated with variation of the chip formation mechanism [21].…”

Section: Introductionsupporting

confidence: 67%

The Influence of Cutting Parameters on Plastic Deformation and Chip Compression during the Turning of C45 Medium Carbon Steel and 62SiMnCr4 Tool Steel

et al. 2022

View full text Add to dashboard Cite

The paper deals with the issue of cutting zone and chip compression. The aim was to analyse the microstructure transverse section of the cutting zone on a metallographic cut, due to determined values of chip compression and plastic deformation, which affect the cutting process efficiency. The tested cutting tool material was coated with cemented carbide. The selected workpiece materials were C45 medium carbon steel of ISO grade and 62SiMnCr4 tool steel of ISO (W.Nr. 1.2101) grade. In the experiments, a DMG CTX alpha 500 turning centre was used. The cutting speed and feed were varied, and the depth of the cut was kept constant during the turning. The plastic deformation and chip compression determine the efficiency of the cutting process. The higher compression requires more work to perform the process and, therefore, it requires more energy for doing so. With the increase of the cutting speed, the deformation for C45 steel is decreased. The rapid deformation reduction was observed when the cutting speed was increased from 145 m/min to 180 m/min. Generally, deformation is decreasing with the increase of the feed. Only at a cutting speed of 145 m/min was the deformation elevation observed, when the feed was increased from 0.4 mm to 0.6 mm. During the turning of the 62SiMnCr4 tool steel we observed an error value at a cutting speed of 145 m/min and a feed of 0.4 mm was the middle cutting parameter. However, feed dependence was clear: With an increase of the feed, the plastic deformation was decreasing. This decreasing was more rapid with the increasing of the cutting speed. Besides plastic deformation, there was analysed chip compression as well. With the increasing of the cutting speed, there was a decrease of the chip compression. Due to a lack of information in the area of the chip compression and the plastic deformation in the cutting process, we decided to investigate the cutting zone for the turning of tool steels 62SiMnCr4, which was compared with the reference steel C45. The results could be applied to increase the efficiency of the process and improvement of the surface integrity.

show abstract

Section: Introductionsupporting

confidence: 67%

The Influence of Cutting Parameters on Plastic Deformation and Chip Compression during the Turning of C45 Medium Carbon Steel and 62SiMnCr4 Tool Steel

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The higher the diffraction angle, the greater the precision. Practical techniques generally require diffraction angles, 2θ, greater than 120° [4,16] Figure 2 describes the diffraction of a monochromatic beam of X-rays at a high diffraction angle 2θ from the surface of a stressed sample for two orientations of the sample relative to the X-ray beam. The angle ψ, defining the orientation of the sample surface, is the angle between the normal of the surface and the incident and diffracted beam bisector, which is also the angle between the normal to the diffracting lattice planes and the sample surface [2].…”

Section: Principles Of X-ray Diffraction Stress Measurementmentioning

confidence: 99%

Analysis of residual stress in subsurface layers after precision hard machining of forging tools

et al. 2018

Self Cite

View full text Add to dashboard Cite

This paper is focused on analysis of residual stress of functional surfaces and subsurface layers created by precision technologies of hard machining for progressive constructional materials of forging tools. Methods of experiments are oriented on monitoring of residual stress in surface which is created by hard turning (roughing and finishing operations). Subsequently these surfaces were etched in thin layers by electro-chemical polishing. The residual stress was monitored in each etched layer. The measuring was executed by portable X-ray diffractometer for detection of residual stress and structural phases. The results significantly indicate rise and distribution of residual stress in surface and subsurface layers and their impact on functional properties of surface integrity.

show abstract

“…Practical techniques generally require diffraction angles, 2θ, greater than 120° (Fig. 3) [4,13,14]. Figure 3.Principles of X-ray diffraction stress measurement [5] Plane-stress elastic model X-ray diffraction stress measurement is confined to the surface of the sample.…”

Section: Residual Stressmentioning

confidence: 99%

Non-Destructive Analysis of Surface Integrity on Parts from Austenitic Steel for Nuclear Industry

Holubják

Czán

Šajgalík

et al. 2016

Technological Engineering

View full text Add to dashboard Cite

This article is focused on non-destructive detection method of residual stress and chemical properties of stainless steel. By X-ray diffractometry, there it is possible to determine accurately the values of residual stress and austenite percentage without any damage the sample without any change of its original function. Identification of residual stress and its distribution can improve the prediction of failures or damage incidences due to workload over lifetime of components. It can be also used as one of evaluation parameter of suitability of applied manufacturing technological operations.

show abstract

Hard Machinable Machining of Cobalt-based Superalloy

Cited by 29 publications

References 1 publication

The Influence of Cutting Parameters on Plastic Deformation and Chip Compression during the Turning of C45 Medium Carbon Steel and 62SiMnCr4 Tool Steel

The Influence of Cutting Parameters on Plastic Deformation and Chip Compression during the Turning of C45 Medium Carbon Steel and 62SiMnCr4 Tool Steel

Analysis of residual stress in subsurface layers after precision hard machining of forging tools

Non-Destructive Analysis of Surface Integrity on Parts from Austenitic Steel for Nuclear Industry

Contact Info

Product

Resources

About