Transcript A SYSTEM OF PROCESS CONTROL FOR WEAVING

A SYSTEM OF PROCESS CONTROL FOR WEAVING
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THE QUALITY OF FABRIC & PRODUCTIVITY AT LOOM
ARE DETERMINEDBY THE ENTIRE SEQUENCE OF
OPERATION FROM WINDING TO WEAVING.
YARN QUALITY GREATER AFFECTS THE LOOMSHED
PRODUCTIVITY & FABRIC QUALITY.
ONE SHOULD BEAR THE LOWER PRODUCTIVITY AT
WEAVING PREPARATORY BUT CANONOT COMPROMISE
AT THE FABRIC QUALITY
ASSESS PROCESS CAPABILTY & IMPROVE WHEREVR
POSSIBLE
A SYSTEM OF PROCESS CONTROL FOR WEAVING
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FIX TOLERANCE LIMITS,SUCH THAT QUALTY WITHIN
THESE LIMITS IS ACCEPATABLE
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MODIFY THE PROCESS CONDITIONS
SUITABLY,WHENEVER THE QUALITY IS SIGNIFICANTLY
BELOW THE PRECRIBED MINIMUM
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CORRECT APROACH ON VARIOUS PARAMETERS
MACHINE SETTING & MACHINERY CONDITION WHICH
INFLUENCE THE QUALITY OF PRODUCT.
SETTING NORMS & SCHEDULE OF CHECKS
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NORMS FOR THE KEY PROCESSING PARAMETERS CAN
BE ESTABLISH EITHER THROUGH EXPERIMENTATION
OR THROUGH COLLECTION OF INDUSTRY WISE DATA.
IN ORDER TO ARRIVE AT NORMS,EXPERIMENTS WITH
DIFFERENT LEVELS OF PARAMETERS WILL HAVE TO
BE CHECKED & PERMORMED
CERTAIN PROCESS OR PRODUCT CHARACTERISTICS
LIKE CONSUMPTION OF ACCESSORIES,SPEED OF
LOOM ETC HAVE TO ESTABLISHED .FOR SETTING
APPROPRIATE NORMS.
WHILE SETTING NORMS ON THE BASIS OF INDUSTRY
WISE DATA COLLECTED THROUGH SURVEY,THERE IS
NECESSITY TO SEE THE SIZE OF POPULATION FROM
WHICH DATA ARE COLLECTED.THESE DATA SHOULD
BE HOMOGENIOUS e.g DATA OF PICKER
SETTING NORMS & SCHEDULE OF CHECKS
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A REGULARE REAPPRAISAL OF NORMS IN VIEW OF
TECHNOLOGICAL ADVANCEMENT,CHANGES IN
QUALITY OF RAW MATERIAL ETC.SHOULD BE MADE,
STUDY THE EXTENT TO WHICH THE PARAMETERS
INFLUENCES QUALITY & PRODUCTIVITY.THE EASE
WITH WHICH IT CAN BE CHECKED & ADJUSTED.AND
THE FREQUENCY WITH WHICH IT GETS DISTURBED
AFTER ADJUSTING CORRECTLY.
PROCESS CONTROL IN DRAWING DEPARTMENT
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EXTREME CARE SHOULD BE TAKEN TO SELECT
APPROPRIATE QUALITY OF REEDS & HELADS WHICH
ARE VERY VITAL FOR THE WORKING AS WELL AS
CLOTH QUALITY IN THE LOOM SHEDS.
WHENEVER PATTERN WEAVINGIS REQUIRED THE
DRAWING IN THROUGH HEALDS & REEDS SHOULD BE
CLOSELY MONITORSO THAT APPROPRIATE QUALITYOF
PATTERNIS WOVENIN THE LOOMS.
FOR REEDS ,GEMERALLY ACCEPTED THAT THE AIR
SPACE SHOULD BE 50 % TO 60 % FOR GETTING
TROUBLE FREE WORKING IN LOOMS.