Because the high temperature arc between the electrode and  the work piece is continuously quenched by coolant, there is no softening of material around the hole. The hole created by the arc takes the same shape as the electrode used.

BENEFITS to you:
• Reclaim expensive parts quickly, easily.
• No re-manufacturing of parts. 
• Flexible working hours.
• Quick response.
• Eliminate production overruns and late deliveries.
                                                   • Scrap reclamation.

The spark eroding process has burnt out the centre of a  broken tap leaving only the flutes to be removed, not damaging the parent metal. It also removes the centre only of a broken drill, but may do some damage to the threads of a broken bolt or stud, which then would need to be reclaimed by the insertion of a wire insert.

Using our portable spark eroder machines

We have removed:-
1. a 35mm piece of a 30mm drill from a hole some 300mm down a 30mm drilled hole in a 17 tonne casting bound for China, 
2. a 5mm broken stud from an electrical component. 
3. We have also removed a broken diesel heater plug from a Mercedes diesel cylinder head, 2 broken wheel bolts from another Mercedes,  
4. an extractor 40mm in diameter from a broken cylinder head bolt in Isle of Man Steam Packet  MV Lady of Man.
5. A seized 100.oo m.m. bolt from a new concrete destruction testing  machine in Watford, London.
6. Broken lathe centres from both Corus Darlington and Corus Redcar 3 separate visits.
7. A broken stud in a Beechcraft aircraft engine at R.A.F. Cranwell in Lincs.
8. 200mm of a broken 60mm drill / boring bar in Sheffield
9. 2 broken taps in a Warrior tank for BAE Systems Barrow in Furness
10. A broken bolt for Alcoa Birmingham from a machine that makes aluminium sheet for the Airbus
11. Broken taps for Thyssen Krupp in components for the Euro Fighter.
12. Broken head bolts on the engine of an Dutch ex minesweeper, now used for the Dutch "sea scouts" at Hull
13. A broken drill in a naval 4.5" gun for  BAE Systems Barrow in Furness
14. Corroded studs and a broken tap on the boiler of the Lydia Eva, the last of the drift trawlers of the Lowestoft fleet being restored  at Small & Co marine Engineers of Lowestoft.
15. A broken head bolt in a 20 cylinder engine powering an electricity generator at 2 sites  for Clarke Energy.

More recently

16. Have removed a broken cylinder head bolt from a trawler engine in Peterhead, Aberdeenshire, Scotland.
17. A broken 60mm bolt in a machine for Alcoa Birmingham (see 8) third separate visit
18. A broken drill in a barrel for the AS90 mobile gun for BAE Systems Barrow in Furness third separate visit
19. Have burned 4 precise holes in casing of a Rolls Royce Spey Jet Engine. belonging to the M.O.D. on behalf of
Qinetiq at Shoeburyness. 

Equipment used

Portable control unit 2S  36" x 20" x 22" Approx weight 3.5cwt

Mounting  system Base 13" x 7" Min room rqd 24" x 12" Height 39" Min distance for electrode to edge of base 4"

Mini Mag Base    Base 9" x 4"    Total Height 14"    Min width rqd 20"    Min depth Rqd 11"    Min distance for electrode  to edge     of base 4"

Large fixture mounted on a 4Ft diameter chuck to remove broken morse tapered centre, using 20kva machine Click on picture to enlarge

Under the new REACH requirements, the only dielectric used is water.

We only work on the strict understanding that terms and conditions are understood and agreed.

Member Federation Self Employed and Small Businesses since 1985