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6. Assessment for selection assistance
6.1 Yield
Comparing the distribution of energy to obtain a movement in an electric press (figure 8 a ) with that of a hydraulic press (figure 8 b ), we can see that the distance between the energy source and the movement to be performed is significantly shorter for the electric press. This results in an efficiency of between 0.9 and 0.95 for an electric press, compared with 0.3 to 0.4 for a hydraulic press.
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Assessment for selection assistance
The market
For twenty years, electric injection molding machines were considered marginal and remained confined to cutting-edge sectors such as connector technology, optics, medical technology or the production of parts requiring high precision. Since 2004, however, they have become a common working tool that can be transposed to most production processes previously carried out on hydraulic injection molding machines.
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