Tool Wear Evaluation of Selected Inserts after Turning by Electron Microscopy

Náprstková, Nataša; Cais, Jaromír; Kraus, Pavel; Van, Tuong Nguyen

doi:10.21062/ujep/x.2016/a/1213-2489/mt/16/5/1068

Cited by 7 publications

(4 citation statements)

References 7 publications

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“…Scanning electron microscope Jeol JSM 7000F was used for observing of microstructure details. As claimed by Náprstková et al (2016) and Svobodová (2014) to analyze the disturbances, errors or deformations on the worn surface by means of SEM with greater magnification than by light microscopy. Severe plastic deformation of the face place was identified on the tool surface (Fig.…”

mentioning

confidence: 99%

Deformation of Exposed Tool Parts for Crushing of Undesirable Advance Growth

Ťavodová

Džupon

Kalincová

et al. 2018

Acta Technologica Agriculturae

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Tools for crushing of undesirable advance growth and mulching wood are subjected to heavy wear in operation with the need for their frequent replacement shortly after deployment. It is important to address the problem of their wear due to price of tools, as well as the time necessary for their replacement. Tool life is shortened because of deformation taking place due to the loss of wolfram-carbide (WC) tips, what is an undesirable phenomenon. Solutions for increasing the tool lifetimes were designed on the basis of analysis of wear mechanisms that cause this deformation. Furthermore, effect of deformed layer was evaluated by measuring hardness and microhardness. It was found that there was a strain hardening the surface due to cyclic loading. Size and extent of deformation of the entire tool with the loss of material on the functional part were documented using an optical scanning sensor system. Effect of the deformation on the material structure change, as well as topography and extent of surface area affected by abrasive wear under impact loads, were assessed by means of light and electron scanning microscopy. On the basis of these analyses, an option for increasing the lifetime of exposed areas on the tool by application of hardfacing to increase the tool wear resistance was proposed. Prerequisite for extending their work lifetime in the field is creation of a sufficient coarse layer or multiple layers of wear resistant material at specific tool areas.

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mentioning

confidence: 99%

Deformation of Exposed Tool Parts for Crushing of Undesirable Advance Growth

Ťavodová

Džupon

Kalincová

et al. 2018

Acta Technologica Agriculturae

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“…5, wiper inserts eating amount is very small, the free graphite tearing effect is very weak, ferrite, carburite and pearlite will not be easily broken from the free graphite and lead to surface pits, so the surface quality will also be improved, the alternating stresses borne by the wiper inserts will also be reduced, the cutting temperature and tool wear will also be reduced. [23] Fig. 5 The principle of mixed processing of coarse and wiper inserts…”

Section: Surface Roughnessmentioning

confidence: 99%

Study on the Mechanism of Improving Surface Roughness of Gray Cast Iron Machining by Wiper Inserts

Wang,

Han,

et al. 2024

Manufacturing Technology

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Based on the high hardness, poor thermal conductivity, and easy detachment of graphite in cast iron materials. Traditional rough machining inserts cannot achieve good machining surface quality, while the use of precision machining inserts results in rapid tool wear due to excessively sharp rake angles, limiting feed rates and reducing machining efficiency. In order to solve these problems, this paper proposes a method of cutting cast iron with coarse and wiper insert mixed cutting tools, aiming to improve the surface quality of machining and enhance machining efficiency. By studying the mechanism and cutting experiments of the wiper inserts, it was found that it improved the surface quality of cast iron and analyzed the reasons for tool wear. By controlling the integrity of the precision machined surface of cast iron, the aim is to establish the basic theory and key technologies for the precise and efficient manufacturing of high hardness materials. Improve the surface quality of cast iron processing, extend tool life, and improve processing efficiency.

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“…Even a stream of sparks originating also in an intesive cooling testifies about the high instantaneous temperature and also a shape of chips (melted into drops). A duration of the instantaneous temperature is very short, but on the other hand, there exist plenty of such intensive sources [6].…”

Section: Thermal Phenomena In Machining Of Steel For Roller Bearingsmentioning

confidence: 99%

An Impact of Technological Conditions on Surface Burning in Grinding of the Orbit

Stančeková¹,

Mrázik²,

Rybicka³

et al. 2018

Adv. Sci. Technol. Res. J.

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A process of quality development helps us reveal concrete deficiences, an analysis of their origin and realization of required modifications that are needed to solve a concrete problem. One of the aims of quality development of production in bearing industries is to find out an impact of tchnological conditions to form burning of surfaces in grinding of orbits of bearing rings. We try to describe an origin of the problem, to find reasons of burned surfaces in a process of grinding and to propose such technological conditions to avoid above-stated problems and to produce the least possible number of non-identical workpieces. To lower a number of burnings in grinding of the orbit to zero percentage is not real, however, we have to try to get a minimal number of parts with damaged surface.

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Tool Wear Evaluation of Selected Inserts after Turning by Electron Microscopy

Cited by 7 publications

References 7 publications

Deformation of Exposed Tool Parts for Crushing of Undesirable Advance Growth

Deformation of Exposed Tool Parts for Crushing of Undesirable Advance Growth

Study on the Mechanism of Improving Surface Roughness of Gray Cast Iron Machining by Wiper Inserts

An Impact of Technological Conditions on Surface Burning in Grinding of the Orbit

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