Various techniques of quality control: inspection and SQC

1. METHODS OF
QUALITY CONTROL

2. INSPECTION
STATISTICAL QUALITY
CONTROL

3. INSPECTION
METHOD

4. INSPECTION METHOD
This method judges the production against
pre-determined standards.
The quality, form or size of the product is
compared.
The items which are comparable to standards
are accepted and others are rejected.
Helps in finding out the reasons for low
quality or rejected goods.
The reports for rejected goods is prepared.

5. Functions of Inspection Method
Ensures the quality of
raw material
To keep a check on
production process
Defected parts are
not sent to next stage
To check the quality
of finished goods
Tools, machines are of
good quality

6. Methods of inspection
Remedial and Preventive Inspection
• It allows the separation of good quality products
from those of low quality. If the goods are of set
quality, they are accepted, otherwise they are
rejected.
Centralised and floor Inspection
• All the goods are taken to inspection department,
they are checked there and defected items are
returned back to various departments.

7. STATISTICAL
QUALITY
CONTROL