A COMPLETE REPAIR SERVICE

FOR THE CEMENT INDUSTRY

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For some time, Arnway Ltd has been engaged in repairs for the Cement Industry, specialising in weld repairs in- situ to items such as kiln tyres, kiln rollers, mill shells and mill trunnions. All such repairs have been 100%  successful, resulting in major downtime savings compared with the alternatives on offer.  A recent repair in Ireland was carried out in co-operation with the OEM, a world leader in the cement industry, of Copenhagen, Denmark. The repair consisted of a through-thickness (350mm) defect in the No. 1 tyre across the full width of 650mm. According to calculations, we were able to save the user 3 days of repair time compared to one recently carried out by others. We deposited 360kg of weld metal in 7 days.

We have carried out repairs to mill trunnions in-situ, repairing through-thickness defects in both the bearing area and also the flange radius. No re-occurrence of the problem has been reported. We carry a standard pack of equipment, reviewed for completeness according to the particular needs of the job in hand; ready to fly or freight anywhere. This pack includes full electrical preheat and stress relief gear, welding and Arc-Air gouging gear and all ancillary and support equipment. The preheat and stress relief equipment is controlled by a programmer unit, which will control the temperature to within 10C, removing uncertainty over welding in exposed areas. Typically, we control the temperature at both sides of a completely separated excavation, in order to minimise the risk of unequal expansion as a result of the preheat being applied; and therefore shear stress being applied to the repair when cooled.

We have worked all over the world, and can mobilise in a matter of hours. We are Research Members of The Welding Institute of Cambridge (TWI) and as such, we have unrivalled backup from metallurgical and fatigue design points of view.

kiln tyre repair.

Extensive mill trunnion cracking, successfully repaired in-situ.