Daehan Special Metal Co., Ltd.
Company Quick Facts:
Daehan Special Metal Co. Ltd.
1434, Songgok-Ri
Dasan-Myun
Koryung-Gun
Kyung-Bak
Republic of Korea
Phone: +(82) 54 954 9192
Fax: +(82) 54 954 9196
www.dae-han.com
info@dae-han.com
Application:
Metal Casting—Grey & Ductile
Iron Automotive Castings
Products:
Background
Daehan Special Metal Co., Ltd. was established
in 1973 in the 3rd industrial complex of Taegu,
South Korea by a small number of engineers.
They now employ 180 people and have an
annual capacity of approximately 24,000 tons.
Their customers include Hyundai-Kia Motors,
Daewoo Heavy Industries, Hyundai, Heavy
Industries and Ssangyong Motors.
Daehan is a strong believer in keeping their facilities updated and following
established quality control guidelines. Previously, Daehan had used locally
made sand mixers and a sand cooler which were relatively inexpensive but not
very effective at controlling green sand quality. In early 2003, Daehan had
decided to install a second automatic molding line. In order to accommodate
the increased sand demand from two molding machines and the strict sand
quality requirements from the Disamatic® 2110 MK3 vertically parted molding
machine, Daehan started to look for sand preparation equipment from a world
class manufacturer. They were looking for not just a sand mixer, but a
complete sand preparation solution for their foundry expansion.
•
Model MC-100
Simpson Multi-Cooler
•
Model 100B-250
B&P Speedmullor
•
Model 18Mk2-2552
Hartley Compactability
Controller with Bond
Determinator
•
Model 90Mk2-5
Hartley Pneumatic Bond
System
The Solution
•
Model 2-Cell
Simpson Pro-Claim
Daehan reviewed models from several suppliers whose names are well
established in the worldwide foundry industry. Their final choice was to go with
a Simpson sand preparation system solution, including a Model MC-100
Simpson Multi-Cooler®, a Model 100B-250 B&P Speedmullor®, a Model 18Mk22552 Hartley® Compactability Controller with Bond Determinator, a Model
90Mk2-5 Hartley Pneumatic Bond System and a Model 2-Cell Simpson ProClaim®. According to Mr. Jae-ug Byun, Vice President of Daehan, their final
decision was based on the following criteria:
Delivered:
2003
•
Simpson’s good reputation and long history of serving the foundry industry
•
Simpson’s products are based on sound engineering principles and well-
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proven technologies, making the equipment mechanically more reliable and
requiring less maintenance
•
Simpson Multi-Cooler
Simpson’s overall price level for all the equipment was more competitive
than that of European suppliers
Optimal performance of any sand plant can best be achieved when the
variations in return, or shakeout, sand can be eliminated. The Simpson MultiCooler is a critical element to the optimal performance of the sand preparation
system. The ability of the Simpson Multi-Cooler to cool, pre-moisten and premix the return sand will greatly assist the high intensity batch mullers in
maximizing their performance. To meet Daehan’s sand cooling needs the
Model MC-100 Simpson Multi-Cooler was selected.
For sand mulling, Daehan selected one (1) Model 100 B&P Speedmullor with a
Hartley Model 18Mk2/2552 Bond Determinator. The 18Mk2/2552 automatically
controls the mulling operation from charging the weigh batch hopper through
delivering sand to the Disamatic with bond additions being automatically
calculated and adjusted by testing compactability, green compressive strength
and moisture. The Hartley 90 Mk2-5 Bond Injection System automatically
transports and injects the calculated bond addition directly into the side of the
Speedmullor. This system provides the full advantages of high intensity, high
speed batch mulling combined with the automation and control of the advanced
Hartley compactability control system.
Results/Benefits
partner and high
Daehan has been very pleased with their Simpson sand system. “I believe we
were able to eliminate much of the defects which were related to the sand,” says
Mr. Byun. “In addition, overall casting surface finish has been improved too.”
quality equipment.”
Another benefit of the new sand preparation system comes from the operation
“I have no doubt that
I have chosen a good
Mr. Jae-ug Byun
Vice President
Daehan Special
Metal Co., Ltd.
of the Model 2PC Simpson Pro-Claim pneumatic sand reclamation unit. Daehan
bypasses a percentage of their used foundry sand from the shake-out and
processes it through the Pro-Claim removing used binder and contaminants
from the individual sand grains. This reclaimed sand is reintroduced into the
sand system as a replacement for new sand.
The benefit is derived from
reducing the quantity of new sand Daehan purchases and the subsequent
reduction in the quantity of sand be sent to the land fill.
For more information on the Simpson Group and its products, visit us on the web at
www.simpsongroup.com, call us at (630) 978-0044 or email us at sales@simpsongroup.com. To
find your local representative, go to www.simpsongroup.com/contacts/contacts.htm.
© 2004 Simpson Technologies Corporation, Beardsley & Piper LLC, and Hartley Controls Corporation. All rights reserved.
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