Groups’ manufacturing units have integrated
and technologically equipped plants to enable
the working team bring out the best of the customer
manufactures finished, ready to assemble
Alu Alloy components. To increase
the value of the product through continuous
technological developments, in-house
facilities of Die-Casting. Heat Treatment,
Machining, Vacuum Impregnation and
Leak Testing were setup. With the
aim to manufacture complete range
of castings, pressure die casted components
also started in the year 1995. ACMI’s
engineers visit customers to fully
understand the component and its applications.
the utilization of Advanced Computer
systems, ACMI’s engineers create
and develop optimum designs for dies.
With the company philosophy based
on “Quality leads to profitability”
quality of inputs has always remained
the primary concern.
meet customer requirements in respect
of Tensile strength, elongation and
hardness for Alu Alloy castings, Heat
Treatment Facility was set up in 1993
with material handling facilities
and advanced testing machines.
ACMI invested heavily in establishing
latest machining facilities comprising
of Lathe machines, Milling Machines,
measuring instruments, gauges etc.
a quality assurance measure, on customers
requirement to supply vacuum impregnated
components, subjected to pressures,
vacuum impregnation plant with a capacity
of 40 Tons was installed. Using latest
in impregnation technology, cross
linking mono and polyfunctional acrylates
ad methacrylate sealants, made vacuum
impregnation in real sense quality
assurance process especially for automobile
Advanced machines manned by competent
and reliable personnel made it possible
to meet highest standards of quality
and reliability. Components requiring
leak tightness are tested with pneumatic
pressures after machining.
Micro Components Private Ltd.
FASTER PRODUCTION AND QUICKER DELIVERY OF
Conventional stamping requires elaborate
and expensive tooling with higher lead time.
Unlike this, in Photochemical Milling /
Etching Process, the photo tool is developed
primarily, through a number of photographic
operative steps, thereby reduction in tooling
cost and higher accuracy. The photo tool
costs is approximately 1/20th in comparison
to conventional tool. The entire process
from tooling to printing just takes few
hours. The full cycle of process from drawing
to finished parts can be completed in a
OF THE PARTS AND LIMITATIONS
are many parameters that determine
the etching tolerances. As such there’s
no specific benchmark/rule to calculate
the etching tolerance in all cases.
In general the variables that determine
the etching tolerance are the type
of the metal, its thickness, the number
of the critical dimensions in the
part and size of production run i.e.
the quantity. As a thumb rule ( +
) 15% of the metal thickness is usually
HOLE DIAMETER TO METAL THICKNESS (t)
Generally the diameter of a hole can not be
less than the metal thickness and the diameter
should be approx. 1.25 times of the thickness
of the metal.
LINE WIDTH TO METAL THICKNESS (t)
In this process, the width of the metal between
holes is not particularly a problem. But when
a large number of openings are present in the
part, generally the metal thickness between
ant two consecutive openings should be 1.25
times of the metal thickness.
CENTER TO CENTER DIMENSIONS
In accordance with the preparations of the production
artwork, the final parts will duplicate the
dimensions. The table given below gives an idea
of the tolerance of center to center dimensions.
( + )
mm or less
mm – 76.2 mm
mm – 152.4 mm
mm – 254.0 mm
CORNER RADIUS TO METAL THICKNESS (t)
Inside corner radius : The possible smallest
corner of radius is approximately equal to
the thickness of the metal (i.e. For a metal
thickness of 0.1 mm the corner radius would
be 0.1 mm.). However this can be reduced in
ii. Out side corner radius : The out side
corner tends to etch faster than inside and
hence radius less than the metal thickness
is achievable. Generally the outside radius
obtainable is 0.75 times of the metal thickness
OF BEVEL TO METAL THICKNESS (t) :
Since the etchant attacks the metal vertically
and laterally on both sides while etching, a
small projection will be noticed on all cutting
edges of the part. This sketch of the small
projection is given below and it is at the center
of the thickness of the matel.
PHOTOCHEMICAL MILLED PARTS OVER CONVENTIONAL
Parts produced by PCM are burr-free, strees
free and are as flat as parent metal from
which they are manufactured .
Hard metals can be etched easily without any
difficulty and the molecular structure of
the metal is not alter the hardness of the
Parts whose design make conventional stamping
“impossible or uneconomical” can
be produced by Photo Chemical Milling.
The design changes can be easily made at a
low cost, while a huge cost is involved in
conventional tool making.
Costs fro prototype productions , short production
runs, even runs in the hundred of thousands
of pieces are less than that in the conventional
Lead-time from design approval to finished
parts is cut down to only few days.
Photo Chemical Milling saves you on toolling
cost and faster deliveries of the parts, thus
there is less of finished inventory.
short if you can design,
we can produce.