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Bristot V.M.,University of the Extreme South of Santa Catarina | Bristot V.M.,Institute Maximiliano Gaidzinski Cocal do Sul | Montedo O.R.K.,University of the Extreme South of Santa Catarina | Rodriguez C.M.T.,Federal University of Santa Catarina | And 2 more authors.
International Review of Mechanical Engineering | Year: 2013

This study aims to develop an electromechanical system to perform alternating movements, including ascents and descents in a stacker machine for classification of ceramic tiles, replacing a cylinder hydropneumatic where this is showing faults during the working process. Initially, we collected some system parameters such as time of ascent and descent of the truck and the mass of the system by adding the mass of the material, in this case the ceramic coating. Given this information we propose design all efforts in the system and make the correct choice of machine elements to be used in the mechanism. This will be through mathematical calculations, brochures, catalogs, books, parts of machinery and the use of software like SolidWorks. The final set will consist of a geared traction as main axes (driving and driven), and synchronized belt pulleys, bearings, screws and mounting base. The proposed project aims to minimize downtime, reduce maintenance cost of repairing these cylinders, gain speed and thereby improve the performance of machine. © 2013 Praise Worthy Prize S.r.l. - All rights reserved.


Bristot V.,University of Porto | Bristot V.,Institute Maximiliano Gaidzinski Cocal do Sul | Schaeffer L.,University of Porto | Gruber V.,SATC | And 3 more authors.
International Review of Mechanical Engineering | Year: 2012

The expansion of the ceramic coating market in decades boosted the development and improvement of manufacturing techniques for many companies, resulting in a highly competitive market driven by low manufacturing costs. The Strategies to stay alive and even leading reference, are companies perform constant new product launches, by analysis of plans to reduce costs. It is known that the energy matrix of the ceramic tile industry Wet process corresponds approximately to the range of 22 to 30% of the composition manufacturing costs, where this percentage, about 37% of the consumption of thermal energy is directed to only one device, the spray-dryer. On the basis of these values in the last 10 years companies have maintained their focus directed to the strategic management energy efficiency, which depart from the principles cogeneration projects and recovery heat, to replace equipment with more efficient ones. The main objective this article is to demonstrate the planning, execution and outcome of a recovery project of heat from the flue gas scrubbing combustion furnace of a roll as an air dilution a spray-dryer in the coatings industry. © 2012 Praise Worthy Prize S.r.l. - All right reserved.


Savi J.R.,University of Porto | Bristot V.,University of Porto | Bristot V.,Institute Maximiliano Gaidzinski Cocal do Sul | Schaeffer L.,University of Porto | And 3 more authors.
International Review of Mechanical Engineering | Year: 2012

The hard metals constitute a group of materials known as composite sintered hard phases that associate (carbides) with a metallic phase being widely used in applications where it is desired hardness and wear resistance coupled with high toughness. In this paper we present the results of adding 1% by weight of the elements Nb, Ti, Cr and Mo in the microstructure of cemented carbide from a commercial composite WC-6% Co. To this composite was added 1.5% (by weight) of zinc stearate as a lubricant and sintered at a temperature of 1450 °C in an atmosphere of argon. Aiming to analyze the efficiency of the product were characterized by micro structural testing of green density, shrinkage, density sintering, microstructure and microhardness. © 2012 Praise Worthy Prize S.r.l. - All rights reserved.


Bristot V.,University of Porto | Bristot V.,Institute Maximiliano Gaidzinski Cocal do Sul | Schaeffer L.,University of Porto | Gruber V.,SATC Faculty Criciuma | Alves J.,Federal University of Santa Catarina
International Review of Mechanical Engineering | Year: 2012

This paper investigated how plants develop leading-edge maintenance to reduce downtime due to maintenance. This increases the quality and productivity, avoiding delay in delivery of products and satisfying customer needs. In addition to the TPM-Total Productive Maintenance, there is another system based on the conditions of maintenance of machinery and equipment, performing maintenance when needed, which can be called the Routine Maintenance. This system avoids the maintenance based on the estimated useful life of equipment that can perform maintenance prior to the time necessary, and after the break. A quantitative survey conducted in factories of ceramic plates, and identified the high potential need for implementing a system of routine maintenance. © 2012 Praise Worthy Prize S.r.l. - All rights reserved.


Bristot V.,University of Porto | Bristot V.,Institute Maximiliano Gaidzinski Cocal do Sul | Schaeffer L.,University of Porto | Gruber V.,SATC Faculty Criciuma
International Review of Mechanical Engineering | Year: 2012

In this study, tooling for hydraulic shaping of ceramic spheroids in alumina was developed based on the process for manufacturing alumina bricks and ceramic tiles, since the only known process to shape ceramic spheres in alumina available on the market so far was that known as isostatic shaping. The purpose of these spheres and spheroids is to use as grinding bodies to process raw materials, reducing the solid matter particles. They were initially developed by making a model with a shaping cavity, obtained using a manual hydraulic press. Using the apparent density and wear results that were achieved using the spheroids produced from a cavity model, a prototype of the tooling was constructed with eight shaping cavities, and installed in an automatic hydraulic press to verify its performance in a real life industrial production situation. © 2012 Praise Worthy Prize S.r.l. - All rights reserved.

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