Our company, with the passing of years, has become leader in the field of mechanical overhaul, thanks to technicians skilled of great experience and competence, a structure of machine tools always well-advanced, and the best equipment available both for works to perform in our workshop and for works on location. We are able to intervene on any type of machine. Our technicians have been performing for years the overhaul of important machines such as gas turbines, steam turbines, feed pumps, refinery pumps, pumps used in chemical plants, centrifugal – alternative compressors, reducers etc.
Rotary Equipment Maintenance
A
Vibration Analysis
Vibration Analysis is the most effective and proven technique to determine the condition of rotary equipment. Every deviation in a rotary machine generates a unique vibration pattern. This makes vibration analysis a very reliable diagnostic method. Not surprising it has become a widely used diagnostic tool. Vibration analysis also is a perfect reference point for a preventive maintenance programme.
Which machine deficiencies do Vibration Analyses reveal?
- Unbalance
- Resonance
- Backlash, looseness
- Alignment faults
- Sprocket damages
- Bearing damage
- Driving belt problems
- Electrical faulties
B
Laser Alignment
Flexing and distortion of the shell vastly increases mechanical wear and can severely reduce shell and refractory brick life. Poor load-sharing and shell cranking lead to roller and bearing problems. Correct alignment improves service life through increased mechanical stability and decreased mechanical stress on the shell, tyres, tyre pads and retainers, support rollers, roller bearings and shafts, which eliminates aggressive and costly component wear. The main advantage of regular alignment surveys of your rotary equipments is preventative maintenance as we can detect potential issues and recommend ways of eliminating the problems before they develop into critical mechanical failures. We recommend carrying-out regular full alignment surveys on all of the rotary items. Our experienced engineers can analyse and resolve rotary equipments issues accurately and quickly to eliminate ongoing damage; prolonging the life of your equipment and reducing costly down-time. Our engineers use various methods of alignment, depending on what are the specific requirements of the given task.
C
Balancing
Our company is a specialist in balancing rotary machine parts for all types of industry. Vibrations cause structural components to detach within a rotary tool. This often leads to damaged machinery and/or machine foundations. Also conduits and electrical cables are prone to break. Imbalance significantly reduces the operational safety of your machine. This is why balancing contributes both to a longer machine life and a higher personal safety of the operator. ACS Services has all the specialized knowledge, balancing equipment and service engineers to re-balance small, large, light and very heavy machine parts. We are able to do this in-situ or in our own fully equipped workshop.
Types of Imbalances
- Static Balancing
- Dynamic Balancing
- Couple Imbalance
D
Resurfacing and grinding
These conditions can cause vibration, high power consumption, alignment problems and short bearing life which result in premature bearing failure and damage to the tyre retaining components. Resurfacing restores the support contact surfaces by removing surface material which takes out fissures and spalls, eliminates tramp material and compensates for eccentric motion due to shell run-out. Tyres, support rollers, thrust rollers and tyre thrust faces can all be restored to surface finishes that meet and exceed OEM tolerances. Worn support roller and tyre faces are ground in-situ whilst the rotary unit is in normal production. Unique machines use fast cutting grinding cup stones to cut a true arc about no fixed centre and restore surfaces to a smooth and cylindrical profile. Resurfacing facilitates the accurate adjustment of support rollers and improves mechanical stability.
Our grinding engineers are seasoned professionals who calculate and supervise the setting up of the machines and use information such as the material’s characteristics, rotational speed and stability of the rotary vessel, the initial condition of rollers and tyres and the grinding machine motor amps; all of this information is used to restore the rotating surfaces to ‘as new’ condition.
E
Repair
Our repair and installation work can involve simple repair work such as changing bearings and rollers, installing or reversing girth gears, replacing, rollers and support bases, doing filler bar work by shimming tyres, changing shell sections, installing seals, mill repairs, grate cooler repairs – right through to the installation of new rotary vessels.
