This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Inter-Relation Between Development, Mass Production and Quality Described on a Practical Example Such as Cast Disc Wheels for Commercial Vehicles
Sector:
Language:
German
Abstract
With the product liability for automotive safety parts in mind,
the inter-relation between development, manufacture and quality of
a cast ductile iron wheel for commercial vehicles is being
described. The product quality requirements are derived from the
service application condition of the wheel. By definition, the
product quality is composed of the design quality and the
manufacturing quality.
During the development period of the wheel, a very close
cooperation between design and manufacturing engineers is
imperative. As the physical properties of the nodular iron vary in
different parts of the wheel, the wheel-specific material
properties are investigated on prototype wheels and serve as base
figures for the dimensioning of the product. Investigations prior
to mass production are also made regarding dimensional casting
tolerances and internal defects. These investigations are carried
out by design and foundry engineers as a team and then lead to the
quality specifications to be applied in mass production.
In a final discussion it is shown how the testing methods are
applied in order to calculate and define the service life of the
product in terms of probability.