Conclusion 

Fast economical pattern making technology type very many, its has the characteristic, the application scope are various, this article only can broadly make some simple introductions, each kind of technology still had many concrete technological processes, the craft parameter and its the technical characteristic in the concrete application and the implementation process。

The mold is one of foundation industries, in the globalization market economy and under each kind of high technology and new technology swift and violent development situation, the fast economical mold has entrusted with the new mission and the brand-new connotation, the classification increases unceasingly, the fast economical pattern making material turns towards the multi-varieties seriation to make great strides forward, the craft has the new innovation and the breakthrough unceasingly, is published one after another with it supplementary equipment, the service domain in opens up unceasingly, the creation economic efficiency is more and more remarkable。 Along with the commodity economy development, the intense market competition, the product renewal acceleration, is reducing the cycle to the fast economical pattern making technology, reduces the cost, will increase the precision and lengthens the life aspect the request to be able to be more and more high inevitably。 Because it can cause the enterprise to win the market, creates the remarkable economic efficiency, more and more receives entrepreneur's favor and the concerned leader department's enormous attention and the policy fund support。 Each kind of fast economical pattern making technology also can consummate mature and the development unceasingly in the promoted application process, as a result of the high technology and new technology development, each kind of technical bonding with the seepage, for the adaption production in different demand, surely will be able to form some, the frugal energy, the frugal material fast pattern making technology new from now on。 

A technical note on the characterization of electroformed nickel shells for their application to injection molds 

——aUniversidad de Las Palmas de Gran Canaria, Departamento de Ingenieria Mecanica, Spain 

Abstract

The techniques of rapid prototyping and rapid tooling have been widely developed during the last years。 In this article, electroforming as a procedure to make cores for plastics injection molds is analysed。 Shells are obtained from models manufactured through rapid prototyping using the FDM system。 The main objective is to analyze the mechanical features of electroformed nickel shells, studying different aspects related to their metallographic structure, hardness, internal stresses and possible failures, by relating these features to the parameters of production of the shells with an electroforming equipment。 Finally a core was tested in an injection mold。 

Keywords: Electroplating; Electroforming; Microstructure; Nickel 

1。 Introduction

   One of the most important challenges with which modern industry comes across is to offer the consumer better products with outstanding variety and time variability (new designs)。 For this reason, modern industry must be more and more competitive and it has to produce with acceptable costs。 There is no doubt that combining the time variable and the quality variable is not easy because they frequently condition one another; the technological advances in the productive systems are going to permit that combination to be more efficient and feasible in a way that, for example, if it is observed the evolution of the systems and techniques of plastics injection, we arrive at the conclusion that, in fact, it takes less and less time to put a new product on the market and with higher levels of quality。 The manufacturing technology of rapid tooling is, in this field, one of those technological advances that makes possible the improvements in the processes of designing and manufacturing injected parts。 Rapid tooling techniques are basically composed of a collection of procedures that are going to allow us to obtain a mold of plastic parts, in small or medium series, in a short period of time and with acceptable accuracy levels。 Their application is not only included in the field of making plastic injected pieces [1], [2] and [3], however, it is true that it is where they have developed more and where they find the highest output。