Surface Parameters, Tribological Tests and Cutting Performance of Coated HSS Taps

Píška, Miroslav; Sliwkova, Petra

doi:10.1016/j.proeng.2015.01.350

Cited by 17 publications

(5 citation statements)

References 6 publications

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“…The common defects in the machining of metal matrix composites are work hardening of the soft matrix and cracking or debonding of the particles. When compared to other defects of cast components such as gas porosity, such machining induced defects are minor and can be ignored [25]. From SEM images, shown in Figures 21 and 23, it is evident that the increase in weight percentage of SiC particles from 5 to 10 has given rise to increased tendency of dislodging of SiC particles.…”

Section: Surface Morphology Of Threadsmentioning

confidence: 99%

An investigation into tapping of Al6061/SiC metal matrix composite with straight flute HSS machine tap

Nagaraja

Adhikari

Yasir

2019

JMES

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The present study deals with tapping of Al6061/SiC metal matrix composite. Stir casting technique was used for the fabrication of composite. Castings were produced by varying weight percentages of SiC (5%, 7.5% and 10%) of 23μm size in Al6061. The tapping experiments were conducted for the machinability study of Al6061/SiC metal matrix composite using M8 x 1.25 HSS machine taps. The tapping operation was performed under dry condition with different cutting speeds. Torque required for tapping was measured using piezoelectric based 4-component drill tool dynamometer. Surface morphology and profile of thread surfaces were analysed using Scanning Electron Microscope (SEM) and metallurgical microscope. Estimation of progressive flank wear of machine taps was undertaken using profile projector. The performance of HSS machine tap was evaluated in terms of tapping torque, tool flank wear, and surface characteristics of thread surfaces. The flank wear of uncoated HSS machine tap increased with the increase in weight percentage of SiC in Al/SiC composite for a particular cutting speed. Further, when the matrix materials were reinforced by the same kind and the same weight percentage of SiC particles, the flank wear of the tool was found to increase with cutting speed. In addition, the damage caused to thread profiles increased with the increase in cutting speed and weight percentage of SiC.

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Section: Surface Morphology Of Threadsmentioning

confidence: 99%

An investigation into tapping of Al6061/SiC metal matrix composite with straight flute HSS machine tap

Nagaraja

Adhikari

Yasir

2019

JMES

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“…To evaluate the wear of tap during the cutting process, Xu et al [11,12] established a deep learning-based model system for the monitoring and prediction of tool wearing. Korhonen et al [13][14][15] adopted the method of adding coating to the surface of cutting tap and reducing the wear of the tap, thus prolonging its service life. Hou et al [16,17] added low-frequency vibration to the tapping process.…”

Section: Introductionmentioning

confidence: 99%

Research and Optimization of Extrusion Tap Structure Based on Numerical Simulation and Experimental Analysis

Tao,

Wan,

et al. 2024

Materials

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In order to enhance the quality of thread processing by tap, a systematic analysis of its forming mechanism and factors affecting forming quality is conducted. Effects of the number of edges, the amount of shovel back, the extrusion cone, the calibration part and the extrusion cone angle on the torque and temperature are achieved by finite element analysis and experiments. From the perspective of reducing torque and temperature during the forming process, the optimal combination of tap structural parameters for machining M22×2 internal threads on 42CrMo4 high-strength steel are further obtained through orthogonal optimization. The results show that, unlike the cutting process of threads, the extrusion forming process of threads is a net forming process in which metal undergoes plastic deformation in a limited space, and the metal material continuously flows along the edge of the V-shaped groove of the tap, gradually piling up to form the thread tooth shape. This also caused a noticeable lack of flesh at the top of the extruded thread teeth. Better quality threads can be obtained by machining with optimized structural parameters. The maximum torque and temperature during the machining process are reduced by 22.86% and 20.31%, respectively. The depth of the hardened layer increased by 0.05 mm, and the root and top hardness of the teeth increased by 10 HV0.2 and 5 HV0.2, respectively.

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“…In other processes including punching and blanking, the punch wear, deformation and breakage are the major areas of concern [8]. These problems could be addressed using wear-resistance hard protective coatings [9], which can be deposited using different techniques for example physical vapor deposition -PVD [10][11][12], chemical vapor deposition -CVD [13], laser cladding [14] and cathodic arc evaporation [3,15]. The thermo-reactive deposition/diffusion (TRD) process is another method used for improving the mechanical properties of these components and tools, mainly because of its low cost and good performance of the coatings deposited [16].…”

Section: Introductionmentioning

confidence: 99%

“…The thermo-reactive deposition/diffusion (TRD) process is another method used for improving the mechanical properties of these components and tools, mainly because of its low cost and good performance of the coatings deposited [16]. Although the TRD process is widely used for coating dies, extrusion tools and punches among others, cutting tools such as screw taps have not been studied, even though homogeneous coatings could be obtained on the complicated geometry and relatively large surface of these components [9].…”

Section: Introductionmentioning

confidence: 99%

Properties and in-service performance of components reated with thermo reactive deposition/diffusion

Marulanda

Toro

Castillejo

et al. 2018

Ingeniare. Rev. chil. ing.

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Properties and in-service performance of components reated with thermo reactive deposition/diffusionPropiedades y desempeño en servicio de componentes tratados con deposición/difusión termorreactiva ABSTRACT Machine components and tools subjected to aggressive environments and strong wear conditions need surfaces with good mechanical properties. The thermo-reactive deposition/diffusion (TRD) process is one of the methods used for improving the mechanical properties of these components and tools, mainly because of its low cost and good performance of the coatings deposited. Although the TRD process is widely used for coating dies, extrusion tools and punches among others, the in-service performance of cutting tools coated using the TRD process has not been extensively studied. In this study, niobium carbide coatings were deposited on cutting punches and screw taps using the TRD technique. Phase formation and micro-hardness of the coatings were studied using X-ray diffraction and Vickers measurements respectively, and the in-service performance of the coated and uncoated tools was studied through field tests conducted at different numbers of cuts. The results show that the coating significantly improves the wear resistance and the cutting performance of the tools, especially at higher numbers of cuts. RESUMENLos componentes de maquinaria y las herramientas sujetas a ambientes agresivos y fuertes condiciones de desgaste necesitan superficies con buenas propiedades mecánicas. El proceso de deposición/difusión termorreactiva (TRD) es uno de los métodos usados para mejorar las propiedades mecánicas de estos componentes y herramientas, principalmente por su bajo costo y buen desempeño de los recubrimientos depositados. Aunque el proceso TRD es ampliamente usado para recubrir moldes, herramientas de extrusión y punzones entre otros, el desempeño en servicio de herramientas de corte recubiertas usando el proceso TRD no ha sido estudiado extensamente. En este estudio se depositaron recubrimientos de carburo de niobio sobre punzones de corte y machos de roscado usando la técnica TRD. La formación de fases y la microdureza de los recubrimientos se estudió usando difracción de rayos X y dureza Vickers

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Surface Parameters, Tribological Tests and Cutting Performance of Coated HSS Taps

Cited by 17 publications

References 6 publications

An investigation into tapping of Al6061/SiC metal matrix composite with straight flute HSS machine tap

An investigation into tapping of Al6061/SiC metal matrix composite with straight flute HSS machine tap

Research and Optimization of Extrusion Tap Structure Based on Numerical Simulation and Experimental Analysis

Properties and in-service performance of components reated with thermo reactive deposition/diffusion

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