Improvements in the thread cutting torque for a<i>6082-T6</i>aluminum-based alloy with tapping tools utilizing diamond coating

Korhonen, Hannu; Koistinen, Arto; Lappalainen, Reijo

doi:10.1080/10910344.2017.1402930

Cited by 7 publications

(2 citation statements)

References 61 publications

(89 reference statements)

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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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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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“…A new approach for selection of the polymer as the process fluid can be seen in [ 7 ], where polymer–water-based cutting fluid can effectively substitute mineral oil-based fluids in grinding processes. The discovery of fullerene and nano-additives started a new epoch of application of unique materials [ 8 , 9 ] at extreme conditions of loading.…”

Section: Introductionmentioning

confidence: 99%

Exquisite Energy Savings at Cold Metal Forming of Threads through the Application of Polymers

et al. 2022

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One of the global problems today is energy—its production and distribution. As the human population grows, the consumption of energy rises simultaneously. However, the natural sources are limited, and so the focus on power savings becomes more and more important. One of the ways to reduce consumption is the use of effective lubricants and tribological fluids in industry, especially in processes with high demands on energy but high quality of products as well. Forming is a typical example of such technology, and the application of polymers seems to be a very important challenge, because the application of straight oils or lubricant with extreme pressure additives seems to be prevailing in that field. Nevertheless, the polymer lubricant should fulfill all European standards as well as the environmental and ecological limitations with respect to health and the natural environment and its recycling and disposal. This paper is focused on the forming technology of threads and the application of selected polymers to the forming process. The measured and quantified criteria are torque and force loadings, energy consumption, and quality of the produced surfaces. Kistler dynamometers, scanning electron microscopy, and advanced surface topography with the use of Alicona IF-G5 were applied to assess all aspects of the tribological and energy aspects of six modern process fluids, three lubricating pastes, and two fluid modifications. The results show that the polymer synthetic lubricant (at volume concentration 20% in water) can reduce the total energy consumption by up to 40% per forming cycle (in mean values) at average surface roughness below 0.8 μm.

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Strength of Formed and Cut Threads of AA2017 and AA1050 Aluminum Alloys at Different States

Bougharriou,

Swissi,

Soussi

et al. 2023

Mechanisms and Machine Science

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Improvements in the thread cutting torque for a6082-T6aluminum-based alloy with tapping tools utilizing diamond coating

Cited by 7 publications

References 61 publications

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

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

Exquisite Energy Savings at Cold Metal Forming of Threads through the Application of Polymers

Strength of Formed and Cut Threads of AA2017 and AA1050 Aluminum Alloys at Different States

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