Volume 6 | Issue 2 |

 Abstract

- Coarse-grained bronze-bonded diamond grinding wheels dressed using lasers and silicon carbide dressing wheels were used to grind YG8-cemented carbide work pieces. The wear patterns and grinding ratios of the laser-dressed grinding wheels were investigated after different grinding stages. After grinding, the laser-dressed grinding wheel displayed superior surface topography compared to the silicon carbide wheel, and the surface quality of the workpiece also improved.

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 Keywords

Grinding wheel, Silicon carbide, bronze.

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

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 Keywords

ANOVA, Design of Experiments, S/N Ratio, Taguchi Method.

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

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Creative Commons Attribution 4.0 and The Open Definition

 Keywords

performance, paraffin composites, heat exchanges, cuprous oxide, thermal conductivity

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

-- This work presents an experimental and numerical study to investigate the enhancement techniques can be applied to flat-plate liquid solar collectors towards more compact and efficient designs. Tube-side passive techniques can be consisting of adding additional devices which are incorporated into a smooth round tube (V-cut twisted tapes), modifying the surface of a smooth tube (corrugated and dimpled tubes) or making special tube geometries (internally finned tubes). Based on previous studies from the authors, V-cut twisted tapes were selected for enhancing heat transfer. This type of inserted device provides better results in laminar, transitional and low turbulence fluid flow regimes.

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 Keywords

Heat transfer enhancement, V-Cut AlTwisted Tapes, Solar Collector, Heat Transfer Enhancement Efficiency.

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 Abstract

Our aim is to increase the thermal conductivity of organic phase change material paraffin wax by adding additives .The thermal conductivity of paraffin wax can be enhanced by employing high conductivity materials such as alumina (Al2O3).An analysis has been carried out to study the performance and enhancement of paraffin wax with alumina (Al2O3) particles in capsules. Phase change materials (PCMs) with their phenomenal phase changing behaviour hold a key for many developments in renewable energy and engineering systems for sustainable future. PCM which can store and release heat energy over a temperature range has become an eminent candidate for many engineering applications that includes thermal, civil, electronics and textile.

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Paraffin wax, Alumina, Thermal conductivity ,latent heat, capsules

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

We look into brief introduction of cryogenic treatment. Our focus throughout the report is more on cryogenic treatment of tool steel and high speed steel. In metal forming industry tools are exposed to very complex and rough surface conditions, which are the result of different effects (mechanical, thermal and chemical) and thus require well defined mechanical properties. Different approaches are followed to increase the surface properties of tool steels. The surface hardening treatments of steel has shown significant improvement of various properties including wear and fatigue resistance. Cryogenic treatment is yet another approach acknowledged by some to extend the tool life of many cutting tools. We will describe the complete procedure and investigate the effects on the metallurgical changes in the tool steel. However real mechanisms behind the better performance of tools are still in doubt. Studies in the given references on cryogenically treated tool steel shows micro structural changes in material that can influence the tool life. However little is gained from the experimental results showing involvement of carbide precipitations. Cryogenic treatments of carbides has yet to be extensively studied. In this paper drill bits are treated with cryogenic method and to predict the hardness, wear strength and other results are analysing.

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Drill bit, Cryogenic treatment, hardness, wear, liquid Nitrogen

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 Abstract

In recent years, there has been a steadily increasing in the amount of solid wastes because of the increasing human population and urbanization. Solids are includes industrial waste, agricultural waste, forest waste and waste bio-products. Bio-energy has been produced total 10% participation of energy of global energy production, energy produced from the source of biomass: plants, animal, and organic waste.In some seed like Juliflora seed, Ziziphus Seed oil prepared and blended with together to produce the biodiesel and to check the performance of the biodiesel.The study also includes examination of physical and chemical properties such as pH value, viscosity, density, flash point, fire point and acid values on the produced biodiesel as well as on the conventional diesel for comparison. The study revealed that the properties of the bio-diesel are very close to the conventional diesel.

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pH value, viscosity, density, flash point, fire point

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

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 Keywords

MEch

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

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Creative Commons Attribution 4.0 and The Open Definition

 Keywords

performance, paraffin composites, heat exchanges, cuprous oxide, thermal conductivity

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

The main aim of this concept is Mass production at high productivity to reduce unit cost and the interchangeability to facilitate easy assembly. This necessitates production devices to increase the rate of manufacture and inspection device to speedup inspection procedure.The main process to Design and evaluation fixture which will hold six valvebody parts with thickness of 32 mm and also Design a fixture for vertical machining center to perform milling, drilling, and threading operation in top and bottom side, Design of fixture drawing using Solid Works 2010. Analysis of stress and deformation of the design using ansys14.0 software

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Creative Commons Attribution 4.0 and The Open Definition

 Keywords

Vertical Milling Machine, ,fixture, FRL Unit, compressor, pneumatic set up, blackening process.

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Creative Commons Attribution 4.0 and The Open Definition