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PRESS RELEASE
July 2nd, 2010
SE Asian Generator – orbitally machine rotor shaft journal Rather than unthread and carefully transport the 13 metre-long rotor shaft from a 110 MW GT8 generator to workshops 300 km away to have a scored journal area machined, a South East Asian company called in Metalock Engineering UK recently to orbitally machine the damaged shaft in situ.
The 400mm diameter by 380mm long journal had become scored due to a serious bearing failure. As a result of Metalock’s expertise, the machining operation was completed in half the time it would have taken using the alternative means.
To provide access to the damaged shaft area, the bearing covers were removed. This allowed Metalock engineers to evaluate the situation with the rotor in-situ. The bearing was then completely removed and the shaft supported so that Metalock could set up its orbital turning system to machine the damaged area on the journal diameter and the thrust face. Some 6.8mm of material was removed using the technique, with equipment designed and manufactured by Metalock UK. With orbital turning, the tool is rotated around the shaft instead of the shaft being revolved past a stationary tool. Areas of the rotor shaft that were not to be machined served as bearing locations for the pneumatically driven orbital turning cage, which revolves on bearings at each end.
On completion of the machining, the journal was inspected and found to be parallel, round and concentric within 0.01mm with a finish of 4 to 6 CLA. While this work was progressing the old failed bearing pads were flown back to the UK, remetalled and machined to suit the new journal dimensions. They were then returned to the station for fitting and the generator reassembled ready for recommissioning.
Met Rel 43 The orbital turning machine, designed and manufactured by Metalock Eng UK, rotates the tool around the shaft instead of the shaft being revolved past a stationary tool.
Contact:
Metalock Engineering UK Ltd.
Unit H5 Pilgrims Walk, Prologis Park, Coventry CV6 4QG ENGLAND
Tel: +44 (0) 2476 338205
Fax: +44 (0) 2476 360190
PRESS RELEASE
July 1st, 2010
LP Turbine – Casings in-situ machining for retrofit upgrades To raise the efficiency of three 500MW low-pressure steam turbines for electricity generation, Metalock Engineering UK has carried out what it
Read more about LP Turbine – Casings in-situ machining for retrofit upgrades
Contact:
Metalock Engineering UK Ltd.
Unit H5 Pilgrims Walk, Prologis Park, Coventry CV6 4QG ENGLAND
Tel: +44 (0) 2476 338205
Fax: +44 (0) 2476 360190
PRESS RELEASE
June 30th, 2010
Large Boring Bar – 12m bar for big casings As industrial plant and equipment becomes more sophisticated to cope with modern technology so manage-ments’ determination to minimise operational downtime increases,
Read more about Large Boring Bar – 12m bar for big casings
Contact:
Metalock Engineering UK Ltd.
Unit H5 Pilgrims Walk, Prologis Park, Coventry CV6 4QG ENGLAND
Tel: +44 (0) 2476 338205
Fax: +44 (0) 2476 360190
PRESS RELEASE
June 29th, 2010
Hydro Stations – various in-situ machining operations Metalock Engineering’s in-situ machining skills have been in great demand by Weir Engineering Services recently as part of an overall refurbishment programme of
Read more about Hydro Stations – various in-situ machining operations
Contact:
Metalock Engineering UK Ltd.
Unit H5 Pilgrims Walk, Prologis Park, Coventry CV6 4QG ENGLAND
Tel: +44 (0) 2476 338205
Fax: +44 (0) 2476 360190
PRESS RELEASE
June 28th, 2010
ESB Turbine – casing rebore for reblading By replacing internal corroded areas of a Parsons steam turbine with improved materials the unit has beengiven a new lease of life at
Read more about ESB Turbine – casing rebore for reblading
Contact:
Metalock Engineering UK Ltd.
Unit H5 Pilgrims Walk, Prologis Park, Coventry CV6 4QG ENGLAND
Tel: +44 (0) 2476 338205
Fax: +44 (0) 2476 360190
PRESS RELEASE
June 27th, 2010
Drax PS – intricate on-site machining Metalock Engineering UK has recently carried out intricate on-site machining on two LP turbines at Drax power station to enable Siemens retrofits and upgrades
Read more about Drax PS – intricate on-site machining
Contact:
Metalock Engineering UK Ltd.
Unit H5 Pilgrims Walk, Prologis Park, Coventry CV6 4QG ENGLAND
Tel: +44 (0) 2476 338205
Fax: +44 (0) 2476 360190
PRESS RELEASE
June 26th, 2010
Czech Turbine – machine, weld, remachine blade slots To extend the life of the compressor discharge casing of a 160MW gas turbine in the Czech Republic – about100km north of
Read more about Czech Turbine – machine, weld, remachine blade slots
Contact:
Metalock Engineering UK Ltd.
Unit H5 Pilgrims Walk, Prologis Park, Coventry CV6 4QG ENGLAND
Tel: +44 (0) 2476 338205
Fax: +44 (0) 2476 360190
PRESS RELEASE
June 24th, 2010
Culligran Hydro – complex runner chamber profile machining Using a single boring bar set up Metalock Engineering UK has recently completed several in-situ machining operations, including a complex new runner
Read more about Culligran Hydro – complex runner chamber profile machining
Contact:
Metalock Engineering UK Ltd.
Unit H5 Pilgrims Walk, Prologis Park, Coventry CV6 4QG ENGLAND
Tel: +44 (0) 2476 338205
Fax: +44 (0) 2476 360190
PRESS RELEASE
June 23rd, 2010
Cottam Power Station – 4.5m girth ring gearwheel tooth recovery In what is claimed as a world first, Metalock Engineering UK saved Powergen’s Cottam Power Station, Retforda substantial amount of
Read more about Cottam Power Station – 4.5m girth ring gearwheel tooth recovery
Contact:
Metalock Engineering UK Ltd.
Unit H5 Pilgrims Walk, Prologis Park, Coventry CV6 4QG ENGLAND
Tel: +44 (0) 2476 338205
Fax: +44 (0) 2476 360190
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© Metalock Engineering UK Ltd 2010
Metalock Engineering UK Ltd.
Unit H5 Pilgrims Walk, Prologis Park, Coventry CV6 4QG ENGLAND
Tel: +44 (0) 2476 338205 Fax: +44 (0) 2476 360190
