Our sell up s fully equipped to undertake
any type of job right from design & development
to final finishing i.e. ready for end use. We have following
DESIGN AND TOOL ROOM
MACHINING / PRODUCTION
HEAT TREATMENT SECTION
FABRICATION & WELDING SHOP
SURFACE TREATMENT SHOP (Phosphating & Painting)
AND TOOL ROOM
Design section has the facilities to put conception
of development and production tooling into workable
So, specific are the requirements that Computer Aided
Design (CAD) with its advanced stages has become core
at this section.
Accurate Tool room is the key to precision engineering.
In view of this, the company went for installing more
then ten different kinds of sophisticated machines,
3-Axis copy milling, 60 Amps EDM, Shapers, Lathes, Radial
drill, vertical milling and precision drilling machines.
Presence of these machines has rendered NAC vast capabilities
of making in house all kinds of forging tools, sheet
metal dies, production and inspection gauges, jigs and
2. FORGING SHOP
Till recent past transformation of a vision to some
physical shape of iron used to take lot of time, may
be decades. Now, with latest scientific advancements,
transformation time has been markedly reduced and this
endless process is always on.
We at NAC claim to be associated actively with this
process, equipped with 4 pneumatic pre-shaped forging
hammers (l00 ~ 250 Kgs.) 2 drop forging hammers of capacities
750 ~ 1500 Kgs coupled with 2 trimming presses, 3 medium
size stamp forging presses, 1 upsetter along with an
annealing furnace and 3 shot blasters. NAG is fully
geared to undertake any type of forging job relating
to engineering & automobile industry.
3. MACHINING / PRODUCTION
Our machining lay out is well equipped to do all sorts
of operations on the forging that we manufacture in
house. This section comprises not less than fifty different
kinds of imported machines such as copy/turret/short
bed lathes, cylindrical/surface/centerless grinders,
gear shapers/hobbings/shaving, thread rolling, radial
drill and milling etc. So we can undertake any precision
job which starts from forging and ends in grinding.
4. SPRING MANUFACTURING
Implicitly a spring leaf being shock absorbing device
has to have endless Fife. NAC attains strict quality
controlled environment. This shop has the capability
to manufacture flat springs for industrial purposes,
multileaf springs for trucks, trailers and axle assemblies,
dynamic and flexible Taper Leaf-Springs for automobiles
requiring constant cushioning effect under varying loading
The taper leaf springs represent the latest development
of technology and owing to their convincing advantages,
they are becoming the most frequently applied elements
in vehicle suspensions. The construction of the taper
leaf spring allows optimum use of the material, thus
allowing considerable weight reduction. The spring can
be exposed to an extremely high level of stress, owing
to NAC use of standardized high quality spring steel.
The surface is compressed by shot-peening. The springs
are then "plasticized” and finally protected
against corrosion by inorganic zinc. All processes serve
the purpose of NAC taper-leaf springs: quality, longevity,
5. HEAT TREATMENT
In simple words, this is strength imparting shop.
To achieve this very elaborate facilities with controlled
operating parameters are required. Foremost requisite
is the team who understands & operates this facility
at NAC. Our layout includes three induction heating
units ranging from 25 KVA~150 KVA with scanners (shaft
hardener), spacious temperature control hardening and
tempering furnaces, four quenching tanks for thorough
hardening of high carbon alloy steel. Saltbath furnaces
for liquid carburising. nitriding, carbo-nitriding,
cyaniding for heat treatment of low carbon alloy steel
are also part of our expertise.
& WELDING SHOP
This section comprises of hydraulic and power presses
of different capacities. This shop is also equipped
with shearing machine, projection welding machine, CO2
and arc welding plants.
6. QUALITY ASSURANCE
As for as quality is concerned, we follow the principle
that production and quality should go side by side.
Quality does get preference on production. We have following
facilities to enforce this objective.
Crack Detection Arrangements
Full Range of Hardness Testing (Rockwell, Brinnal,
Vickers and shore)
Endurance/Fatigue testing machines for all functional
Load Vs deflection checking machine. (For knowing
spring constants of spring leaf assemblies) And many
other conventional measuring devices & instruments.
The shop consists of complete paint shop including baking
facilities, de-greasing & de-rusting. Phosphating
process is done before painting which increase quality
of component. It increases the resistance power against
moisture and rust.
Both the prime aspects of surface treatment is decorative
and protective requisites are well taken care of.
Our this section has pretreatment arrangements of
degreasing, de-rusting and phosphating. Painting is
baked which gives it very strong bonding.
Performance of this section is constantly monitored
by salt spray test reports of the random samples, picked
from the painted lots. These reports, we get from external
and authenticated source.