Part economics

Structural reaction injection molding (SRIM) maybe considered as a natural evolution ofRIM. It is a very attractive composite manufacturing process for producing large, complex structural parts economically. The basic concepts of the SRIM process are shown in Figure 2.57. A preformed reinforcement is placed in a... 

A production index reports the ratio of production in a given sector in a given year to the production in the same sector in a base year. Often the index is partly physical, partly economic Physical production is weighed on the basis of the economic value of the different products. This measure is mainly used for studying changes in one country over time. 

The barriers to the efficient use of energy are neither technical nor, for the most part, economic. They are the product of 3,000 conflicting and obsolete building codes, of a consfruction industry resistent to change, of a lack of mechanisms to facilitate the transition from kinds of jobs we no longer need... 

You set up storage levels in the material flow. From the supplier to the storage levels (e.g. modules and variant parts), economical production has priority. Up to this point you can e.g. use price-efficient extended workbenches with corresponding core areas of competence despite longer throughput times. As of the supply level, the fast assembly for the customer order has top priority. With this method, variant vendors also save on the high capital tie-up in the product inventory for all kinds of variants. 

When more than one process can produce a part, the ultimate choice is normally driven by finished part economics. Ultimately, part costs are viewed as the cal-... 

Because plastics are sold by weight, it is important to view part economics in terms of volume. A kilogram or pound of a material with a low density or specific gravity will produce more parts than an equal weight of a heavier one. 

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