|
|

|
Broken taps, twist drills, reamers etc. From all sorts of components, engine blocks, crankshafts, camshafts etc.
Frozen, rusted or seized studs,
bolts & pins during |
| maintenance and overhaul of diesel engines, power generating equipment and other machinery.
|
Splitting of frozen nuts and removal of shrink fitted gear rings and/or other components in the maintenance, overhaul of engines, power equipment and other machines.
Removal
of
Tungsten carbide inserts from button bits. Button bits used in the water well drilling industry are discarded and scrapped when one or two of the TC insert buttons get worn, chipped or broken. These can be removed and replaced with new inserts at a fraction of the cost of an entire new bit.
Removal
of
Tungsten carbide bushes from dies and/or worn dies.
Removal
of Solid carbide
drills, carbide tipped drills and gun drills.
Removal
of Rolled taps & studs
from aluminum die cast components.
|
|

|
Drilling of pilot holes for wire drawing dies in solid tungsten carbide (TC). Tungsten carbide blanks can be drilled through very fast
and economically compared to EDM (spark erosion).
|
| A
hole of 8mm in a carbide blank of 45 mm diameter and 23mm thick is processed in 25 minutes.
|
Drilling holes in hard faced metal sheets like
wear plates and other hard metals like tool & die steels, tungsten carbide, manganese steel, magnetic material, alloy and stainless steel. Holes are drilled through hard faced wear plates used in earth moving machinery. The holes are used for the mounting bolts. Countersunk holes can also be processed. Special steels and armour plating used in Defense Equipment like battle tanks can be processed i.e. Drilling through, making slots etc.
Extraction of core samples from casting, forgings and/or other products for metallurgical testing and evaluation.
Splitting of seized S.S. Nuts in the maintenance of Atomic Reactor.
Making of slots of any shape and size in metal
plates, machine parts or components. Tubular electrodes of different shapes in cross section
will sink required shape slots in metal plates and other components. Apart from handling material of any hardness this process can achieve exactly required shapes including sharp internal corners. This is a major
advantage over milling process because of difficult radius machining (corners). Square slots of 22 mm side were required to be made in a 25 mm thick plate for a manufacturer of earth moving equipment.
The holes were made with a tubular copper electrode of square cross
section in about 40 minutes each.
Slicing/parting of hard metals like tungsten carbide tool steels, white bits etc. With minimum loss of material. A copper sheet electrode
of 0.8 mm thickness will suffice to process most such jobs without much loss of material. Overcut may be up to 1.5 mm. This is advantageous compared to grinding.
Adding or
enlarging keyways in cutters of different types.
Rough machining of dies where high metal removal rate is required before
conventional dielectric medium based Spark Erosion die sinking is carries out. In the case of large plates and large jobs which cannot be
accommodated in the EDM machine tank and also in cases on in-situ applications the metal Arc Disintegrator machine proves useful because
of its ability of aerial sparking i.e. Due to water based coolant system.
Deburring
operation for castings and forgings to remove internal jagged edges & sharp jutting out sections & forging flash.
Machining/enlarging holes in steel
and/or other components after hardening or heat treatment. The internal diameter of a tractor part
(Bull pinion shaft) was found to be undersized. But the components were already hardened by head treatment. However they could be processed using electrodes of appropriate diameter with the Disintegrator.
|