Up: Sediver
Sediver Catalog 1970
8 of 136
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Toughened glass insulators and their quality control
The realization of insulators which best responds to the
exigencies of users requires three concomitant factors:
a) The choice of the most appropriate materials and the most
desirable shape for each constituent part.
b) The realization of the best adapted and the most efficient
production processes.
c) the verification at each production stage, of the
concordance between quality desired and quality obtained.
Each one of these imperatives requires skill and specialized
means put at the disposition respectively of:
- the research and development department
- the production department
- the quality control department
Before examining the different constituent elements of
insulators insofar as choice of materials, means of production
and of inspection are concerned, we must underline the importance
we attach to the organization of the quality control.
Organization of quality control
As in all industrial production operations, it is indispensable
to be sure at the various stages of production that each element
is useable for the following operations, and at the end of manufacture
that the finished products do indeed conform to the conditions
required by the use of this material.
These conditions are defined by:
- standards groups
- customers
- Sediver's research and development department
- the production department with respect to certain inspections
during manufacture.
These conditions should represent the optimum compromise between
technical perfection an the economical efficiency of our means of
production.
We made wide use of statistical inspection methods which permit us:
- to know manufacturing characteristics by dissociating chance
variations from those due to out-of-adjustment conditions.
- to know, more fully the limits of the means of production and,
consequently, to improve upon its use.
- to assure ourselves, with the best effectiveness, that the
products do indeed conform to the desired requirements.
In recent years, Sediver has made an important effort to control
its manufacture by creating an autonomous department reporting to top
management. This has the double aim of training personnel in
statistical methods and of setting up an inspection network which
blankets the whole of the means of production. This is a significant
job which puts into light the primordial role which Sediver attaches
to the good quality of products supplied to its customers.
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