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SME
Management (MGT-601)
VU
Lesson
30
QUALITY
CONTROL
Breadth
of Scope
·
Raw
Materials and Piece Parts
Inspection.
·
Vender
Relation.
·
Process
Control.
·
Motivation
of Employees.
·
Reliability
What
is Quality?
Quality
is Conformance to Given Requirement or
Specifications on a Product or
Service.
The
term quality by itself does
not necessarily mean high
quality. It means uniformity,
consistency and
conformity
to what user wants.
Two
Aspects of Quality.
·
Design
Quality.
·
Manufactured
Quality.
Design
Quality.
·
Design
Quality Covers (materials,
form, appearance, functions
)
·
When
Reference is made to "high
cost of quality" such
Reference is Almost Associated
with
Design
Quality.
Manufactured
Quality.
Manufacturing
is the transformation of raw materials
into finished goods for
sale, or intermediate processes
involving
the production or finishing of
semi-manufactures. It is a large branch
of industry and of
secondary
production. Some industries,
like semiconductor and steel
manufacturers use the term
fabrication.
·
After
Designing Product has been placed to
Manufacture. Defects in Material, Parts,
and
Subassemblies
May Arise.
·
Poor
Quality is the Result of Poorly
Controlled Manufacturing
Process.
What
is Quality Control?
In
engineering and manufacturing, quality
control or quality engineering is a
set of measures taken to
ensure
that
defective products or services are
not produced, and that the
design meets performance
requirements.
Quality
Control Principles and
Methods have been developed
and have Proved Effective in
Bringing about
Cost
Reduction & Improved Quality.
·
Quality
Control has Many
Aspects.
·
Its
Techniques are Statistical.
·
Its
Motivation is Responsibility of Top
Management.
Statistical
Quality Control
Process
of Application of Statistical Principles
and Techniques in Stages of Design,
production,
maintenance
and Service.
Statistical
Process Control or SPC is a method
for achieving quality
control in manufacturing
processes.
SPC
relies on measuring variation in
manufacturing output and setting
control
limits based
on observations of
variations
arising solely from common
causes. A process that is
"in control" is expected to
generate output
that
is within the control limits. If the
process produces an "out of
control" point, one would
not
necessarily
assume the process had moved to an
"out of control" state but
would try to locate the
special
84
SME
Management (MGT-601)
VU
cause(s)
for this condition. Only if
special causes could not be
found would an assumption be
made that
there
might be new common causes to be
identified. One aspect of process
quality improvement is
achieved
as
these common causes are
found and corrected -
special causes have no
bearing on the overall
quality
improvement
process.
Two
Important Aspects of Quality
Control.
·
Control
of Quality.
·
Improvement
in Quality.
Control
of Quality Can Be Achieved.
·
Control
of Manufacturing Information.
·
Control
of Purchases & Storage of Raw
Materials.
·
Control
of Manufacturing Process.
·
Control
of Finished Products.
·
Control
of Measuring Instruments and Test
Equipments.
·
Control
of Corrective Action.
If
Pakistani Manufacturers are to capture
Greater market share, they will
have to shift their Emphasis
to
quality
control.
85
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