Metal Powder Report最新文献_第7页

Use of nickel filler powder in joining SS304-SS316 through microwave hybrid heating technique 采用微波混合加热技术将镍填充粉用于SS304-SS316的接合

Metal Powder Report Pub Date : 2021-12-01 DOI: 10.1016/j.mprp.2020.10.001

Mainak Pal , Shankar Sehgal , Harmesh Kumar , Deepam Goyal

引用次数: 21

Improvement in friction and wear characteristics using CaF2 as a solid lubricant at different conditions CaF2作为固体润滑剂在不同条件下对摩擦磨损特性的改善

Metal Powder Report Pub Date : 2021-12-01 DOI: 10.1016/j.mprp.2020.06.058

Mayur A. Makhesana, K.M. Patel

{"title":"Improvement in friction and wear characteristics using CaF2 as a solid lubricant at different conditions","authors":"Mayur A. Makhesana, K.M. Patel","doi":"10.1016/j.mprp.2020.06.058","DOIUrl":"10.1016/j.mprp.2020.06.058","url":null,"abstract":"<div>During machining, adequate cooling and lubrication is much needed to reduce friction, wear, and temperature by efficient heat dissipation resulting in improved surface quality and longer tool life. The various alternative approach developed to provide lubrication and cooling includes minimum quantity lubrication, cryogenic cooling, and machining with the use of solid lubricants. The efficiency of solid lubricant particles greatly depends on the particle size, the wt% of solid lubricant, and base fluid used to prepare a lubricant mixture. Therefore, an attempt has been made in the present investigation, to evaluate the tribological properties of CaF2 with different grain sizes and weight ratios in a base oil. Results demonstrated the anti-wear and friction ability of CaF2 as a solid lubricant by improving the tribological properties of sliding surfaces. An increase in friction coefficient is observed with larger grain size (30 and 50 μm) with 10 and 20 wt% of CaF2 as compared with 10 μm particle size. Results also showed the ability of solid lubricant particles with smaller particle sizes (10 μm) to maintain a thin film of lubrication. As a comparison, CaF2 mixed with a base oil performed equally well compared to MQL under different loading conditions. The reduction in friction coefficient and wear is observed with solid lubricant application due to its excellent lubricity even at higher load and pressure. The analysis shows the presence of wear on disc surface in the form of visible grooves and wear debris in dry and MQL condition whereas lubricating effects of CaF2 is dominant.</div>","PeriodicalId":18669,"journal":{"name":"Metal Powder Report","volume":"76 ","pages":"Pages S55-S65"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mprp.2020.06.058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43328595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Environmentally conscious machining of Inconel 718 with solid lubricant assisted minimum quantity lubrication 环境意识加工的英科耐尔718与固体润滑剂辅助最少量的润滑

Metal Powder Report Pub Date : 2021-12-01 DOI: 10.1016/j.mprp.2020.08.008

M.A. Makhesana, K.M. Patel, B.K. Mawandiya

{"title":"Environmentally conscious machining of Inconel 718 with solid lubricant assisted minimum quantity lubrication","authors":"M.A. Makhesana, K.M. Patel, B.K. Mawandiya","doi":"10.1016/j.mprp.2020.08.008","DOIUrl":"10.1016/j.mprp.2020.08.008","url":null,"abstract":"<div>The use of conventional cutting fluid in metal cutting may increase total production cost and also a threat to the environment and health of the operator. Thus, sustainable and cost-effective measures are to be envisaged to overcome the ill effects of conventional cutting fluids. In this regard, the current study aims to develop an experimental setup for solid lubricant assisted minimum quantity lubrication during machining of Inconel 718. PVD and CVD coated tools are employed for the machining under dry, flood cooling, MQL, and solid lubricant (molybdenum disulfide and graphite) assisted MQL. The influence of these techniques is examined by considering surface roughness, tool wear, chip morphology, and microhardness of the machined surface. Experimental results revealed the effectiveness of molybdenum disulfide assisted MQL in the form of improved tool life and surface finish compared to other machining environments. The results also demonstrated the effectiveness of PVD coated by improving the tool life and surface finish in combination with MQSL compared to selected machining conditions. The presented work may help the metal cutting industries to select the combination of most suitable tool material and lubrication conditions leading towards sustainable machining.</div>","PeriodicalId":18669,"journal":{"name":"Metal Powder Report","volume":"76 ","pages":"Pages S24-S29"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mprp.2020.08.008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43393150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Optimization of process parameter of sintered powder metallurgical TiC reinforced tungsten matrix composites 烧结粉末冶金TiC增强钨基复合材料工艺参数优化

Metal Powder Report Pub Date : 2021-12-01 DOI: 10.1016/j.mprp.2020.12.088

S. Sukumar , S. Saravanan , T. Ram Prabhu , P. Parameswaran

引用次数: 3

Experimental investigation of machining nimonic-80A alloy on wire EDM using response surface methodology 响应面法电火花加工nimonic-80A合金的实验研究

Metal Powder Report Pub Date : 2021-12-01 DOI: 10.1016/j.mprp.2020.12.001

Bineet Pal Singh, Jaswinder Singh, Jaspreet Singh, Mohit bhayana, Deepam Goyal

{"title":"Experimental investigation of machining nimonic-80A alloy on wire EDM using response surface methodology","authors":"Bineet Pal Singh, Jaswinder Singh, Jaspreet Singh, Mohit bhayana, Deepam Goyal","doi":"10.1016/j.mprp.2020.12.001","DOIUrl":"10.1016/j.mprp.2020.12.001","url":null,"abstract":"<div>This paper aims to optimize the wire electric discharge machining (WEDM) parameters using multi response surface methodology. Experiments were performed on Nimonic 80A alloy to improve the response variables, namely material removal rate (MRR) and Kerf width (Kw). SEM analysis was carried out on the different samples obtained using different levels of input input parameters, namely, peak current, gap voltage, duty cycle and wire speed to evaluate the quality of machined surface. The influence of these parameters on MRR and Kw were determined using ANOVA. The analysis results revealed that the peak current is the main factor affecting MRR and Kw. The optimized WEDM parameters obtained using multi response function of RSM technique for machining of Nimonic 80A alloy are peak current (57A), gap voltage (90 V), duty cycle (75 µs), and wire speed (7 mm/min) of wire electrode. The characterization results show that high discharge energy results in deep craters with micro craters at low energy levels on the machined surface of the specimen. The results obtained using the proposed methodology would provide sufficient data for enhancing the machining of Nimonic 80A alloy on WEDM.</div>","PeriodicalId":18669,"journal":{"name":"Metal Powder Report","volume":"76 ","pages":"Pages S9-S17"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mprp.2020.12.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43255374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

An experimental investigation on accuracy of Hausner Ratio and Carr Index of powders in additive manufacturing processes 增材制造过程中粉末豪斯纳比和卡尔指数精度的实验研究

Metal Powder Report Pub Date : 2021-12-01 DOI: 10.1016/j.mprp.2020.06.061

Muhammad Ali Kaleem , Muhammad Zubair Alam , Mushtaq Khan , Syed Husain Imran Jaffery , Badar Rashid

{"title":"An experimental investigation on accuracy of Hausner Ratio and Carr Index of powders in additive manufacturing processes","authors":"Muhammad Ali Kaleem , Muhammad Zubair Alam , Mushtaq Khan , Syed Husain Imran Jaffery , Badar Rashid","doi":"10.1016/j.mprp.2020.06.061","DOIUrl":"10.1016/j.mprp.2020.06.061","url":null,"abstract":"<div>Powder based additive manufacturing processes are the most reliable and widely used additive manufacturing processes of present era. Among other parameters, flow of powders within these processes play a critical role in obtaining desirable characteristics of end products. Two most significant parameters which define the flow of powders in additive manufacturing processes are Hausner Ratio and Carr Index. Both Hausner Ratio and Carr Index are theoretically calculated so their numerical values represent the flow character of powders. Since Hausner Ratio and Carr Index are not intrinsic properties of powders therefore an argument exists on their accuracy to determine the powder flow. In this research, an experimental setup is organized to validate the accuracy of Hausner Ratio and Carr Index. The setup consists of a system comprising of three identical powder housing chambers each integrated with a DC servo motor. The speed of motors is controlled by LABVIEW graphical user interface. Three powder lots with similar morphology were used with each having average particle size (d50) equal to 25 µm, 75 µm and 150 µm respectively. The actual flow of powder lots was obtained by using the experimental setup. Results of actual flow were compared with Hausner Ratio and Carr Index of respective powder lots. The effect of particle size distribution on flowability of powders is also discussed.</div>","PeriodicalId":18669,"journal":{"name":"Metal Powder Report","volume":"76 ","pages":"Pages S50-S54"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mprp.2020.06.061","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47868967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 33

Influences of tool velocity ratio on wear behavior of friction stir processed LM25AA-5%SiCp metal matrix composites 刀具速比对搅拌摩擦加工LM25AA-5%SiCp金属基复合材料磨损性能的影响

Metal Powder Report Pub Date : 2021-12-01 DOI: 10.1016/j.mprp.2020.06.062

P. Vijayavel , K. Ananthakumar , I. Rajkumar , T. Sundararajan

{"title":"Influences of tool velocity ratio on wear behavior of friction stir processed LM25AA-5%SiCp metal matrix composites","authors":"P. Vijayavel , K. Ananthakumar , I. Rajkumar , T. Sundararajan","doi":"10.1016/j.mprp.2020.06.062","DOIUrl":"10.1016/j.mprp.2020.06.062","url":null,"abstract":"<div>Several scientists reviewed the influence of the rotation speed and the transverse velocity of devices with friction stir composite processing (FSP) properties. Results proved that significant microstructural changes were affected by altering these parameters. However, the effect of rotation speed and traverse speed of tool has been less explored. Furthermore, no efforts have been made to investigate the consequence of tool velocity ratio so far to wear the aluminum-based metal matrix composites treated with friction stir processed. Therefore, an effort was made in this research to investigate the actuation of the tool speed ratio on the characteristics of aluminum-SiCp composite processed in friction stir processing. Rotational speed and traverse speed of tools selected. In accord to an optimized working range and the corresponding tool velocity ratios were calculated. The FSPed region's morphology, and wear rate were associated with the corresponding tool velocity ratios. It has been identified from this investigation that the device tool velocity of 2.60 resulted in the FSP region with superior resistance to wear compared to other tools velocity ratios.</div>","PeriodicalId":18669,"journal":{"name":"Metal Powder Report","volume":"76 ","pages":"Pages S39-S49"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mprp.2020.06.062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48276513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Process modeling for machining Inconel 825 using cryogenically treated carbide insert 低温处理硬质合金刀片加工Inconel 825的工艺建模

Metal Powder Report Pub Date : 2021-12-01 DOI: 10.1016/j.mprp.2020.06.001

Sumit Kumar , P. Sudhakar Rao , Deepam Goyal , Shankar Sehgal

{"title":"Process modeling for machining Inconel 825 using cryogenically treated carbide insert","authors":"Sumit Kumar , P. Sudhakar Rao , Deepam Goyal , Shankar Sehgal","doi":"10.1016/j.mprp.2020.06.001","DOIUrl":"10.1016/j.mprp.2020.06.001","url":null,"abstract":"<div>The ubiquity of artificial intelligence in the manufacturing domain draws inspiration for the present article. The implementation of a neural network technique is still a difficult and time-consuming effort for the industry. Prediction of machining variables is a considerable issue that needs to be explored for preventive maintenance of the machine structure and to optimize the surface quality. This work aims at predicting response parameters of the dry turning process for Inconel 825 alloy using deep-cryogenic treated tungsten-carbide insert through artificial neural network technique. Process parameters considered in this work were cutting speed, feed and depth of cut, whereas, surface-roughness, tool-wear, and material-removal-rate were taken as the three response parameters.14 types of training functions were compared based upon their error indices searching for the training function which best suits this work. Artificial Neural Network (ANN) model was developed by taking Bayesian regularization back propagation based training function. The response values predicted by the ANN were in very close approximation to the actual experimental value with the mean square error of only 0.0011 μm2, 39.0882 μm2 and 0.0520 cm6/min2in the prediction of surface-roughness, tool-wear, and material-removal-rate of dry turning process of Inconel 825 using treated carbide tool.</div>","PeriodicalId":18669,"journal":{"name":"Metal Powder Report","volume":"76 ","pages":"Pages S66-S74"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mprp.2020.06.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45768727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Characterization of Al-6063/TiB2/Gr hybrid composite fabricated by stir casting process 搅拌铸造制备Al-6063/TiB2/Gr杂化复合材料的表征

Metal Powder Report Pub Date : 2021-12-01 DOI: 10.1016/j.mprp.2020.06.063

Gupta Manoj Kumar

引用次数: 10

Temperature dependence of the hardness of materials with a metallic, covalent-metallic bonds 材料的硬度与温度有关，具有金属、共价键的金属

Metal Powder Report Pub Date : 2021-11-01 DOI: 10.1016/S0026-0657(21)00300-3

D. Zakarian, A. Khachatrian

引用次数: 1