|
Deffree -
Manufacturers of Nickel alloy castings (Monel castings, CZ100,
Hastelloy, Inconel) |
| Molding |
The
molding section is equipped with muller and shell molding machine
to make hand molded CO2 moldings, shell molds and airset molding.
The molding is done as per methoding and all the Nickel alloy castings
(Monel castings, CZ100, Inconel, Hastelloy) are poured
with ceramic foam filters and insulating sleeves. |
 |
| Melting
& Pouring |
A
medium frequency 100KW induction furnace with 100 kg, 150 kg and
300 kg furnaces is used to melt nickel alloys lined with magnesia
(basic ramming mass). The 100 kg furnace is a graphite crucible
lift swing furnace. |
|
| Fettling |
The
fettling area is equipped with cut-off wheel machine, welding machine,
bandsaw machine, grinders and shot blasting machine of 300 kg capacity.
All the castings are shotblasted to remove the adhering sand before
it is sent for heat treatment / machining. |
 |
| Heat
Treatment |
Top |
An
electrical resistance type (1 m x 1 m x 1 m cabin size with Kanthal
AF coils) is used to raise the temperature upto 1230° C max
with quenching tank. |
 |
Machining |
The
company has set up, isolated conventional machine shops to perform
the machining operations. Any CNC machining requirements are met
by subcontracting the same. |
Material
Handling |
An
overhead crane is used to handle the molten metal and molds. This
crane can handle upto 1 tonne capacity. |
|
| Quality
Control |
| Deffree
Engineering uses: |
| Hardness
Tester |
To
check HRB, HRC and BHN |
| Dip
type pyrometer |
To
measure molten metal temperature |
| Baume
meter |
To
check viscosity of sodium silicate |
| Optical
emission vacuum type spectrometer |
An
ARL 3460 Swiss make machine to check chemical composition of
nickel base, copper base and iron base alloys |
 |
| Universal
testing machine |
A
40-ton capacity machine to test tensile strength, yield strength,
elongation etc. |
 |
| Dye
penetration kit |
To
check for the surface defects |
| Dimensional
check |
A
set of calibrated measuring instruments to check the casting
dimensions |
| Mold
test |
A
hardness tester is used to check the hardness of the molds |
|
| Subcontracting
activities |
| The
company has tied up with approved contractors to handle: |
 |
Radiography |
|
Pattern
making |
|
CNC
machining |
|
| Electrical
Power Supply |
A
grid power supply of 200 KW is used for the power requirements and
a standby diesel generator of 160 KW is used to continue operations
in case of a power outage. |
| Built
up area |
| 6609
sq. feet (614.1 sq. mts) |
| Open
Area |
| 61000
sq. feet (5668.6 sq. mts) |
| Production
capabilities |
Maximum
weight of a single piece casting |
: |
165.0
kgs |
Molding
process |
: |
CO2
/ shell / airset |
Maximum
size of the matchplate in shell mould |
: |
275
x 350 mm |
|
| Top |
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