New technological approach to fabrication of high density PM parts by cold pressing sintering

Mamedov, A. T.; Mamedov, V.

doi:10.1179/003258904225020738

Cited by 7 publications

(3 citation statements)

References 6 publications

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“…Mamedov and Mamedov [5] presented a new fabrication method for the manufacturing of high density powder metallurgy parts using single pressing cold sintering technique. Using SEM images they estimated the compact green density of samples and explored the influence of the processing conditions on the density.…”

Section: Experimental Measurement Of Density Distributionmentioning

confidence: 99%

Compaction density variation in powder metallurgy components

Jafar-Salehi¹

2021

Preprint

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The main objective of this research was to study the relationship between green density and compaction pressure in powdered metallurgy. Powder metallurgy has gained popularity and importance because of its near net shape, cost effectiveness and its ability to reduce the complexity of multileveled engineering components. However, powder metallurgy poses challenges that are yet to be fully understood. There are many works performed to address challenges such as the effect of friction, the tool kinematics, handling component prior to sintering and fracture under compaction. This work concentrates on the relationship between green density distribution and compaction pressure. In order to measure the relative density of compacted components, Electron Scanning Microscope was utilized. One can intuitively conceive that the relative density requires more than intuition. It was determined that highest relative density occurs at the center of the specimen and reduces toward the die-powder or punch-powder boundary. For completeness, the application of artificial neural network (ANN) and finite element (FE) model in estimation of green relative density was studied. The results of this research signify that ANN is an excellent technique to determine the relative density distribution of un-sintered compacted specimen. Moreover, finite element method can accurately estimate the average relative density of compacted specimen.

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Section: Experimental Measurement Of Density Distributionmentioning

confidence: 99%

Compaction density variation in powder metallurgy components

Jafar-Salehi¹

2021

Preprint

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“…Goodness of fit was evaluated from 'R-Square' and Adj. 'R-Square' in order to check the reliability and precision of the model [7,8]. The ANOVA table, by selecting the manual procedure for the response at rolled condition, is given as Table 3.…”

Section: Analysis Of Variance (Anova)mentioning

confidence: 99%

Analysis of Powder Metallurgy Process Parameters for Relative Density of Low Carbon Alloy Steel Using Design of Experiments Tool

Sandeep

Prakash

Tewari

et al. 2014

AMM

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The main aim of present research paper is to analyze the influence of compaction load and sintering temperature on relative density of low carbon alloy steel. The alloy steel powder has been compacted at different loads and sintering at different temperatures. The compaction of alloy steel has been done with a circular die of 20 mm internal diameter and 100 mm height at different load and sintering temperature. With the application of hydrostatic stress, the pores will be removed and relative density will increase. So, relative density value will increase simultaneously. This experimental study presents how relative density can be improved by using Powder Metallurgy route. The results are further analyzed with the help of Analysis of Variance using Design of Experiments Tool.

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“…It was found that yielding of sintered materials is sensitive to hydrostatic stresses component imposed, as yield surface closes on the hydrostatic stress axis. Mamedov and Mamedov [9] presented a new fabrication method for the manufacturing of increased density powder metallurgy components using single press cold sintering technique. Using SEM images they estimated the compact green density of samples and explored the influence of the processing conditions on the density.…”

Section: Introductionmentioning

confidence: 99%

Experimental Examination of Process Parameters During Fabrication and Machining of Powder Metallurgy Aluminum Component

Pattanaik*,

Debata,

Behari

2020

IJRTE

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The present study aims at investigating the effect of process characteristics during fabrication and machining of powder metallurgy (PM) Aluminium cylindrical components. The application of the machining process as an alternate manufacturing process to fabricate the PM Aluminium components for industrial use with desired shape and size is explored. The PM Aluminium cylindrical components were fabricated by compacting the Aluminium metal powder within the compaction dies under various values of compaction load, sintering temperature and sintering time. These PM components were then machined under different standard cutting velocity and tangential cutting velocity, surface roughness data were analyzed. After the investigation it was concluded that, higher values of compaction load, sintering time and sintering temperature leads to higher values of relative density and relative hardness of the sintered Aluminum component. Again from machining results it can be stated that, higher values of fabricating parameters have a higher significance on performance parameters.

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New technological approach to fabrication of high density PM parts by cold pressing sintering

Cited by 7 publications

References 6 publications

Compaction density variation in powder metallurgy components

Compaction density variation in powder metallurgy components

Analysis of Powder Metallurgy Process Parameters for Relative Density of Low Carbon Alloy Steel Using Design of Experiments Tool

Experimental Examination of Process Parameters During Fabrication and Machining of Powder Metallurgy Aluminum Component

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