scholarly journals Performance of Water-Based Zinc Oxide Nanoparticle Coolant during Abrasive Grinding of Ductile Cast Iron

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
M. M. Rahman ◽  
K. Kadirgama
Keyword(s):  
Zinc Oxide ◽  
Cast Iron ◽  
Surface Quality ◽  
Ductile Cast Iron ◽  
Second Order ◽  
Depth Of Cut ◽  
Zno Nanoparticle ◽  
Water Based ◽  
The Impact ◽  
Table Speed

This paper presents the performance of ductile cast iron grinding machining using water-based zinc oxide nanoparticles as a coolant. The experimental data was utilized to develop the mathematical model for first- and second-order models. The second order gives worthy performance of the grinding. The results indicate that the optimum parameters for the grinding model are 20 m/min table speed and 42.43 μm depth of cut for single-pass grinding. For multiple-pass grinding, optimization is at a table speed equal to 35.11 m/min and a depth of cut equal to 29.78 μm. The model fit was adequate and acceptable for sustainable grinding using a 0.15% volume concentration of zinc oxide nanocoolant. This paper quantifies the impact of water-based ZnO nanoparticle coolant on the achieved surface quality. It is concluded that the surface quality is the most influenced by the depth of cut(s) and table speed.

scholarly journals Influence of Technological Parameters of Furane Mixtures on Shrinkage Creation in Ductile Cast Iron Castings

2014 ◽  
Vol 59 (3) ◽  
pp. 1037-1040 ◽  
Author(s):  
I. Vasková ◽  
M. Hrubovčáková ◽  
J. Malik ◽  
Š. Eperješi
Keyword(s):  
Cast Iron ◽  
Ductile Iron ◽  
Ductile Cast Iron ◽  
Gating System ◽  
Technological Parameters ◽  
Iron Castings ◽  
Steel Castings ◽  
The Impact ◽  
Very High ◽  
Great Development

Abstract Ductile cast iron (GS) has noticed great development in last decades and its boom has no analogue in history humankind. Ductile iron has broaden the use of castings from cast iron into areas, which where exclusively domains for steel castings. Mainly by castings, which weight is very high, is the propensity to shrinkage creation even higher. Shrinkage creation influences mainly material, construction of casting, gating system and mould. Therefore, the main realized experiment was to ascertain the influence of technological parameters of furane mixture on shrinkage creation in castings from ductile iron. Together was poured 12 testing items in 3 moulds forto determine and compare the impact of various technological parameters forms the propensity for shrinkage in the casting of LGG.

The Influence of Boron on Structure and Mechanical Properties of Bainite Ductile Iron in the Step Austempering in Room Temperature Machine Oil

2010 ◽  
Vol 139-141 ◽  
pp. 235-238
Author(s):  
De Qiang Wei
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Cast Iron ◽  
Impact Strength ◽  
Ductile Iron ◽  
Room Temperature ◽  
Solute Drag ◽  
Ductile Cast Iron ◽  
Treatment Technique ◽  
The Impact

In this paper, the low alloy bainite ductile cast iron has been obtained by a new heat treatment technique of the step austempering in room-temperature machine oil. The effects of element boron, manganese and copper on structure and mechanical properties of the bainite ductile cast Iron in above-mentioned process are investigated. The phenomenon, hardness lag of the alloyed bainite ductile cast Iron, has been discussed. It shows that after the step austempering in room-temperature machine oil, the hardness will increases with the time. It is found that boron and manganese can increase the hardness and reduce the impact strength while copper can increase the impact strength. The results show that reasonable alloyed elements can improve mechanical properties of the bainite ductile cast Iron. Essentially, hardness lag of the alloyed bainite ductile cast Iron is resulted from solute drag-like effect.

scholarly journals Surface Quality Evaluation of Various Metals After Grinding with Aluminum Oxide Grinding Wheel

2020 ◽  
Vol 9 (1) ◽  
pp. 25-31
Author(s):  
Rosemar Batista Da Silva ◽  
Giordano Francis Vieira ◽  
Letícia Cristina Silva ◽  
Carlos Alberto Damião ◽  
Rodrigo De Souza Ruzzi ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Cast Iron ◽  
Aluminum Oxide ◽  
Surface Quality ◽  
Gray Cast Iron ◽  
Gray Cast ◽  
Surface Finishing ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Machined Surfaces

Different metals can respond differently when grinding using the same abrasive grinding wheel, especially in terms of surface quality. In this context, this work aims give a contribution to the metalworking industry by presenting the results of surface finishing after grinding the following metals: VP Atlas steel grade, Gray Cast Iron and two superalloys, Inconel 718 and Ti-6Al-4V. Tests were performed with the aluminum oxide grinding wheel and with following parameters: cutting speed of 37.6 m/s and workspeed of 10 m/min. Two values of depth of cut (15 μm and 30 μm) were tested. The surface roughness (Ra and Rz parameters) were analyzed and SEM images of the machined surfaces were taken and analyzed in order to identify the cutting mechanisms and provide better results discussion. The results showed that the surface roughness increased with the depth of cut; Ra values kept below 0.48 μm for all metals tested. Regarding the machined surface quality, some cracks were observed on the gray cast iron and Ti-6Al-4V surfaces, thereby indicating their relative lower grindability compared to VP Atlas steel under the investigated conditions. No visual thermal damage was observed in the machined surfaces of the samples.

Effect of Zinc Oxide Nanoparticle Sizes on Viscosity of Nanofluid for Application in Enhanced Oil Recovery

2016 ◽  
Vol 38 ◽  
pp. 36-39 ◽  
Author(s):  
Kean Chuan Lee ◽  
Zulhilmi Akmal bin Saipolbahri ◽  
Hassan Soleimani ◽  
Hasnah Mohd. Zaid ◽  
Beh Hoe Guan ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Oil Recovery ◽  
Sol Gel ◽  
Zno Nanoparticle ◽  
X Ray Diffraction ◽  
Organic Precursor ◽  
Transmission Electron ◽  
The Impact ◽  
Nanoparticle Sizes

Zinc oxide (ZnO) with different nanoparticle (NP) sizes was prepared and synthesized by using the sol-gel method with organic precursor, followed by the characterization of the ZnO nanoparticle by using X-Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) to identify the effect of nanoparticle sizes of ZnO on the viscosity of the nanofluid. The impact of nanoparticle sizes on EOR was investigated. Results showed both viscosity and interfacial tension (IFT) increased with the nanoparticle size.

Tool Life and Surface Roughness of FCD 700 Ductile Cast Iron when Dry Turning Using Carbide Tool

2010 ◽  
Vol 126-128 ◽  
pp. 347-352
Author(s):  
Jaharah A. Ghani ◽  
Mohd Nor Azmi Mohd Rodzi ◽  
Kamal Othman ◽  
Che Hassan Che Haron
Keyword(s):  
Surface Roughness ◽  
Cast Iron ◽  
Tool Life ◽  
Feed Rate ◽  
Cutting Speed ◽  
Ductile Cast Iron ◽  
Depth Of Cut ◽  
Carbide Tool ◽  
High Cutting Speed ◽  
High Feed

Machining is one of the most important processes in producing automotive component such as difficult-to-cut FCD700 cast iron grade. Efforts are continuously made to improve the machining technique for the benefit of human and environment. This paper presents an environmental friendly when turning FCD700 cast iron using carbide tool in the absent of coolant. The turning process was carried out in three medium of dry conditions i.e. without air, chilled air and normal air. The turning parameters studied were cutting speed (100-300 m/min), feed rate (0.1-0.4 mm/rev), and depth of cut (0.2-2.0 mm). Result shows that the average surface roughness (Ra) was greatly affected by the feed rate and the effect of depth of cut was negligible. Low Ra value was produced when using high cutting speed, especially at medium air temperature of 10 deg C. Whereas when turning at high depth of cut and high feed rate, the tool life was shorten drastically. In addition, the cutting speed was significantly affecting the tool life. The tool life was found to be inversely proportional with the cutting speed. The longest tool life was obtained at cutting speed of 100 m/min, feed rate of 0.15 mm/rev, depth of cut of 0.2 mm and temperature of -2 deg C. Generally, chilled air at temperature of -2deg C will increase the tool life, but the Ra obtained was deteriorated when compared at higher temperature of chilled air and without air cutting environment. Therefore, these findings can be used a guide depending on the preference of the user, either to obtain a better tool life or Ra value.

scholarly journals The Impact of Process Factors on Creating Defects, Mainly Lustrous Carbon, during the Production of Ductile Iron Using the Lost-Foam Casting (LFC) Method

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1022
Author(s):  
Jan Jezierski ◽  
Michał Jureczko ◽  
Rafał Dojka
Keyword(s):  
Cast Iron ◽  
Ductile Iron ◽  
Surface Defects ◽  
Ductile Cast Iron ◽  
High Tech ◽  
Lost Foam Casting ◽  
Iron Castings ◽  
Process Factors ◽  
The Impact ◽  
Lost Foam

The purpose of this paper was to analyze the process factors affecting the occurrence of lustrous carbon defects in ductile cast iron castings when using the lost-foam casting (LFC) method. This phenomenon results in creating raw surface defects, which sometimes may even lead to cast iron scrapping. A series of trial melting batches were carried out for variable process assumptions. The analysis was performed to reflect, to the greatest extent possible, real foundry production conditions. Industrial tests were performed in Odlewnia Rafamet Sp. z o.o., Kuźnia Raciborska, Poland. The polystyrene patterns created by gluing components together, used in the tests, met the requirements of the high-tech lost-foam casting (LFC) process. The performed analysis allowed the obtaining of lustrous carbon defects in test castings as well as the determination of the process parameters with the highest impact on lustrous carbon inclusions in ductile iron castings. The test results were used to eliminate the possibility of creating a defect and thus directly improve the efficiency of the lost-foam casting (LFC) process used in the foundry.

scholarly journals Model prediction of the impact of zinc oxide nanoparticles on the fluid loss of water-based drilling mud

2018 ◽  
Vol 5 (1) ◽  
pp. 1514575 ◽  
Author(s):  
Richard O. Afolabi ◽  
Peter Paseda ◽  
Sedogan Hunjenukon ◽  
Esther A. Oyeniyi ◽  
Zhibing Zhang
Keyword(s):  
Zinc Oxide ◽  
Model Prediction ◽  
Zinc Oxide Nanoparticles ◽  
Fluid Loss ◽  
Oxide Nanoparticles ◽  
Drilling Mud ◽  
Water Based ◽  
The Impact
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