Ability of Researching
and Developing New Products
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1、 The
Research Center
CHJC has its own New Products Developing Center.
In this center a team of several senior engineers
has designed many automatic machines like High-Speed-Bush-Curling-Machine,
High-Speed-Plate-Punch, and lots of special
chain for certain use ,such as Combine Chain
,Bucket Elevator Chain, U type attachment etc.
2、
Dies Developing Center
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The Dies Developing Center has the most advanced
equipments for die designing and making in China.
It helps CHJC to make various excellent dies as
per buyers’ or our engineers' requests and put
them into use in the shortest time.
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Supervision on
Quality
1、Inspection
on Material
（1） We request steel
supplier to offer certificate of steel quality
and table of steel elements.
（2） Our inspector has sampling test on the
material.
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（3） Only
the qualified material is allowed to put into
the storage and then processed by cold rolling
,cutting ,in order to get a perfect state to
make chain.
2、Inspection on Chain
Parts
（1） Dies Developing Center has all dies inspected
before use .(100%)
（2） Operators inspect chain parts from time
to time during the production.
（3） Quality supervisors inspect parts incessantly
in workshop.
（4） Operators process all parts by antirust.
（5） Quality supervisors inspect dies every hour
to secure the accuracy of the dies. |
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3、 Heat Treatment
（1） CHJC has advance equipment of heat treatments
which can assure the high quality and stable character
of all chain parts .And all necessary data during
heat treatment are processed and recorded by computer.
（2） Quality supervisors test the hardness ,carbon
layers of chain parts carefully after heat treatment
and record the results which are to be forwarded
to Quality Control Center later.
（3） Shot Peening is a must program for CHJC chain.
Largely it improves the fatigue strength and the
life of chain.
（4） All parts are processed by antirust again.
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4、Inspection
During Production.
（1） Every assembly line matches a Part-Tester
which solves the problem of the shortage of chain
parts.
（2） Operators control the width between inner
plates when assembling.
（3） Running in.
（4） Part Shortage test.
（5） Surface and flexibility test.
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5、Inspection of Finished Products
（1） Tensile test .(sampling)
（2） Measurement for Chain Length. (sampling)
（3） Fatigue Breakage Test . (sampling)
（4） Wear Test. (sampling)
Tensile test Measurement for
Chain Length Fatigue Breakage Test Wear Test |
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6、Packing.
（1） Chains are lubricated by fine grease.
（2） Chains are cleaned and lubricated equably
, fully and automatically by lubricating line.
（3） Quality supervisors inspect the packed products
as per buyers’ request before delivery.
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