Cast Iron Repairs
Cast iron repairs, carried out by the Metalock process, are widely accepted as the best method of repairing cracked, broken and otherwise damaged cast iron castings for applications across many industries.

Repairing cast iron the Metalock way – how it's done
Our cast iron repairs are achieved by peening layers of keys into prepared apertures in the surface being repaired. Each key, made of special nickel alloys, is formed into a 'multi-dumbbell' shape. Because they are highly ductile, the keys are easily peened into a metal-to-metal condition so they're almost integral with the metal of the component under repair. Metalock keys are manufactured in a variety of sizes to suit each specific job. Their high strength ensures that the repair achieves a high percentage of the original strength.
Process advantages
Repairs carried out by this method avoid the introduction of unwanted heat stresses. Because of this, there's no distortion and in many cases no further machining is required. It's a useful option where emergency repairs are required, a process that reduces downtime and the need for expensive replacement castings.
In the marine industry alone, the process has saved shipowners millions of pounds by reducing time lost due to breakdowns. We regularly save major items of capital plant and equipment with prompt action following catastrophic breakdowns – the repaired equipment then gives many years of productive life.
If you want a cold casting repair to cast iron that's superior to welding, please contact us for more information.
Cost-effective cast iron repairs – in the workshop or on site
Cast iron repairs can often be carried out on site, which eliminates the need to remove damaged equipment from its working position and the cost of transporting it to a remote workshop. Smaller equipment items can of course be repaired in our workshops if required.
For your convenience, we're on call 24/7, with skilled technicians strategically based in Kolkata to provide rapid on-site response to emergency breakdowns. As you would expect, all Metalock personnel are familiar with on-site working environments and the demands placed upon them to meet customer requirements.
Metalock India
Metalock India is a mechanical engineering service group supplying a range of specialised services to industry. As well as casting repairs, we can now claim to have one of the most talented on-site machining teams in India. This team is supported by a parent organisation that's committed to investing in the business to ensure that our capabilities are constantly developed for the benefit of our customers.
Please contact us now for more information or advice.