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 (METALLURGICAL CONSULTANCY AND SERVICES SDN. BHD. IS THE SOLE DISTRIBUTOR OF THIS PRODUCT IN THIS REGION)
To Whom It
May Concern

It gives me great pleasure
to introduce a remarkable machine to you sir/mdm. This machine,
WeldPrintTM, is the state of the art on line fault detection
system for automatic welding available in the market and it has
received world wide patent. As a metallurgist myself and having
being involved in developing a variety of welding procedures and
weld quality, I am impressed by the capabilities and ease of use
of this machine. I have no hesitation in introducing this product
to your organisation to monitor and improve the quality of your
weld on line. On line monitoring of weld will save costly repair
or reduce the rejection rate of your finished products.
WeldPrintTM
is the cost effective quality monitoring and control equipment.
The following are some of the salient qualities of WeldPrintTM.
- Easy to use – you just need to hook
it to your welding machine and no special tools or adapters are
required
- Quick in detecting faults against
a reference weld and alert the operator or control system.
- WeldPrintTM detect
faults arising from contamination, porosity, loss in shielding
gas, irregular feed rate, poor joint fit-up, misalignment, incorrect
settings or any condition which disrupt the arc since WeldPrintTM
is based on the electrical characteristics of a welding arc.
- Suitable to all automatic welding
process.
- It can detect indirectly the conditions
of your welding machine electrically. A badly maintained machine
will give a wildly fluctuating voltage and current, and hence
an equally wildly fluctuating weld quality.
- It is a must for developing welding
procedures for consistent weld quality during production. Permit
me to give you an example on how WeldPrintTM is ideally
suited to monitor and control in depositing a fillet weld. The
most frequently asked question in fillet weld are as follows :
- Is there sufficient penetration
at the root?
- Are there any weld defects like
slag inclusions, lack of fusion, gas pockets, worm holes etc?
These defects cannot
be detected by conventional non destructive test (NDT) and the
most commonly used NDT technique for production weld are surface
flaw detection such as dye penetrant test, magnetic particle
inspection, eddy current and etc., - just to mention few of
the examples. In other words, the NDT is very limited and can
only give some quality assurance. In addition, it is cost effective
due to the fact that the results can be obtained instantaneously
and the high cost of each test. WeldPrintTM can easily
overcome these difficulties. If weldPrintTM is used
to capture the electrical signals during the development of
weld procedure/s and kept as "signature", and both
destructive test and non destructive tests confirmed that the
procedure/s is/are acceptable i.e. it has good penetration,
no weld defects mentioned above, then the signature can be used
for monitoring and controlling of weld quality during production.
If the production signal is similar to the "signature"
then the production weld (fillet weld) will also have good penetration
and no weld defects. Thus the quality of the fillet weld is
100% assured.
Without
the use of WeldPrintTM, the quality of the fillet
weld cannot be 100% assured.
In
the case of Butt Welding where Non Destructive testing is not
100% say 10%, WeldPrintTM can be used to indicate
the quality for the remaining 90%.
When
welding very thick sections, WeldprintTM is a very
useful tool to monitor the quality of welding for each and every
pass. If defect/s is/are detected in one of the passes,
it can be rectified (repaired) before continuing to completion.
Imaging if you have completed welding a thick section say 50
mm to 150 mm thick plate. Radiography or ultrasonic test shows
three defects located near the root or mid section of the weld,
you will have to carry out a lot of grinding or gouging, followed
by dye penetrant test or magnetic particle inspection before
any repair can be carried out. After weld repair, the joint
is again tested radiographically or ultrasonically before it
can be cleared for acceptance. This repair exercise is not only
costly and time consuming, it also creates problems for delivery
schedules and attracting late delivery penalty. With WeldprintTM,
it reduces your repair cost, reduces down time, reduces supervision
of welder, reduces delay caused by weld repair and finally increase
in profitability
- Any weld quality that falls below
the desired level can be physically marked for repair or the operator
alerted so that corrective action/s can be taken immediately to
reduce the rejection rate.
- The responsibility
of producing good quality weld can be rested on the welder/operator
(reduces supervision because WeldprintTM takes care
of this) instead of the QC personnel who can be freed to perform
other more pressing QC job.
- The fall in quality can be analysed
to ascertain whether the cause is due to a drop in electrical
voltage in the plant due to imbalance of phase distribution within
the factory or change in fit up or there is a serious weld defect.
- All production data can be stored
and retrieved for analysis at a later time. This suggests that
a hard copy of the test results is possible which is not available
in some of the NDT.
- Many "signatures" can
be stored – this means that the signatures of many welding procedures
can be recorded and stored in the machine for use in the monitoring
of production weld.
Additional information
on WeldPrintTM can be adduced in the brochure
enclosed. Should you need further information please do not hesitate
to contact us. We are able to demonstrate the equipment at your
factory is you have an interest in this state of the art equipment
to improve quality or to give quality assurance to your products.
METALLURGICAL
CONSULTANCY AND SERVICES SDN. BHD. IS THE SOLE DISTRIBUTOR OF THIS
PRODUCT IN THIS REGION. For further information please contact
Dr. Lim Ching Liang (Metallurgist) at 012-2781782 or 03-7450730/40
or fax to 03-7450729/39.
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