Injection Molds
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Contribuição para os usuários de sistemas CAD/CAM/CNC em operação de fresamento de topo em aço para moldes e matrizes / Contribution to the users of systems CAD/CAM/CNC in end milling operation in steel for molds and dies
The increased in the demand for plastic products and the need for reduction manufacturing times, and the growing dependence of man on the computer in present day, especially in manufacturing activities, has resulted in constant research of technological developments in order to supply these needs. In dies and molds manufacturing industry for plastic injectio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/06/2011
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2. Ramos colaterais do arco aórtico e suas principais ramificações em nutria (Myocastor coypus) = Collaterals brances of the aortic arch and its main rami in nutria (Myocastor coypus) / Collaterals brances of the aortic arch and its main rami in nutria (Myocastor coypus)
Background: Nutria (Myocastor coypus), also known as Swamp Beaver, is a medium-sized semiaquatic rodent that belongs to the Capromyidae family. Originally from the southernmost part of South America, the species is distributed in several parts worldwide such as Europe and United States, where it has been used for commercial purposes due to the excellent qual
Publicado em: 2011
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3. Estudo dos esforços de corte no processo HSM aplicado à abertura de cavidades / Study of the cutting forces in HSM process applied to pocket milling
The manufacturing of a great number of components in the industry depends on molds and dies used in processes like forging, powder metallurgy, deep drawing, casting and plastic injection. One of the main operations for manufacturing of these parts corresponds to the opening of the initial pocket, from which more complex geometries are machined in order to ob
Publicado em: 2010
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4. Estudo comparativo e experimental de materiais aplicados a insertos macho de moldes de injeção dentro do conceito de molde híbrido
The application of plastic components has grown significantly in most of industrial segments during last years. This has attracted considerably attention for the injection mould design and manufacturing processes, which is one of the most expensive phases of injected plastic components development process. Techniques such as Rapid Prototyping/Rapid Tooling h
Publicado em: 2007
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5. Solução de defeitos na moldagem por injeção de termoplasticos / To surface defects on thermoplastic injection moulded parts solution
In this work it was made a rising of the main causes and solutions of the defects that happen in the transformation of polymers for the molding process for injection. The preparation parameters and tuning of the equipments were discussed involved in the process taking into account the project of the product aided by software, as well as types of injection mo
Publicado em: 2007
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6. Propriedades superficiais do aço AISI H13 após tratamento duplex (nitretação e (TiAIN) para moldes de injeção de alumínio
The hot-work steel AISI H13 is the most used to make molds in aluminum injection. Many studies have been made to increase its lifetime. One promising method is the duplex treatment, where the mold is submitted to a heat treatment, nitriding and coating deposition. The current work uses the titanium aluminum nitride (TiAlN). The influence of the nitrated laye
Publicado em: 2007
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7. Die-sinking electrical discharge machining of a high-strength copper-based alloy for injection molds
High-strength copper alloys are used as materials for injection molding tools or as cores and inserts in steel molds because of their high thermal conductivity, corrosion and wear resistance. Unfortunately, there is little technological knowledge on the electrical discharge machining (EDM) of copper-beryllium ASTM C17200 alloy. In this work, rough and finish
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-06
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8. The use of stereolithography rapid tools in the manufacturing of metal powder injection molding parts
The utilization of stereolithography molds in the manufacture pre-series for injection molded plastic parts aims to reduce costs throughout the product life-time, but mainly during design and manufacturing phases. The use of this Rapid Tooling technique in powder metal injection molding is evaluated in this work. One of the greatest differences between tradi
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-03
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9. "Fabricação e avaliação de microdispositivos para eletroforese com detecção eletroquímica" / "Fabrication and Evaluation of Electrophoresis Microdevices coupled with Electrochemical Detection"
This work describes the development of electrophoresis microchip fabricated by direct-printing and photolithographic processes. The channel structures of the devices fabricated by direct-printing process are defined by polyester films (base and cover) and by a toner layer (walls). The characterization of toner surface and composition were necessary for a bet
Publicado em: 2004
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10. Influence of duty factor on the die-sinking Electrical Discharge Machining of high-strength aluminum alloy under rough machining
The use of high-strength aluminium alloys as material for injection molding tools to produce small and medium batches of plastic products as well as prototyping molds is becoming of increasing demand by the tooling industry. These alloys are replacing the traditional use of steel in the cases above because they offer many advantages such as very high thermal
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2002-07
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11. Alpha-actinin synthesis can be modulated by antisense probes and is autoregulated in non-muscle cells.
We used a 279 bp cDNA probe derived from a Dictyostelium alpha-actinin genomic sequence to assay the degree of homology between alpha-actinin from slime molds, mammalian and chicken cells. Recognition of this probe by vertebrate cells was shown in Southern and Northern blots, and by antisense RNA-induced depression of endogenous alpha-actinin synthesis in li