Steam Locomotive &
Traction Engine Repairs
Cast Iron Welding Services took the long practiced technique of gas fusion welding of foundry castings and have been using it for over 70 years on steam locomotive & traction engine component repairs.
Looking at traction engines, they became very popular in the industrialised countries from around 1850, traction engines are a self-propelled steam engine which had been manufactured for moving heavy loads on the roads, the traction engine was also used in the agricultural sectors working in fields or on any other location that a steam engine could be utilised, it was particularly useful in fields for working on belt driven axillary attachments. The traction engine was very slow an heavy with having so many large and small attachments in its manufacture, unfortunately, over time, many of these traction engines suffered damaged and in most cases with not been able to restore the broken cast iron parts due to the parts missing, broken or fractured, it became very difficult and costly in-that new castings would have to be re-manufactured.
It was not until dedicated, enthusiastic engineers started to recast and re-manufacture some of these traction engines that the industry slowly started to developed into a very large industry. When working on all manners of self-propelled steam engines cast iron was one commodity that was needed when restoring damaged sections of cast iron, in this, it gives a satisfactory feeling that many of the steam engines have been restored and are still on the road today because of the invention of a Gas Fusion Welding Process. The cast iron gas fusion welding process is the only process that gives a one hundred present repair with added strength in its process, but it is not by any means a fast process.
Safe and considerate repairs to broken or damaged cast iron components and engine parts
To give an example on how the gas fusion welding process can bring back an original fractured casting we will demonstrate the workings in its process.
Any sized broken cast iron section must firstly be placed onto a fire brick base ready for preparing a vee formation with tungsten burrs, turnstone burrs are ideal because there is little heat input in the preparation, when the preparation is completed the whole casting will first have four layers of fire bricks placed around the base with port holes set in several areas, this will follow with fitting a blanket of a special “K 0 wool ready for lighting the burners, the heating up will require a 50 degrees centigrade per hour until the whole casting has reached 550/600 degrees centigrade, at this stage a gas welding torch will start to melt the prepared area ready for feeding a cast iron welding rod into the modern pool, it is recommended that the welding process should start from one end of the casting and gradually work to the end of the crack, when the welding process is complete the weld material should be proud of the weld deposit leaving the casting to stress relieve for twenty minutes, it should then be left to cool down at the same temperature which is 50 degrees centigrade per hour, when cold, the excess weld material should be ground down to remove all the excess weld material leaving it proud, the reason for the need to make the weld marginally proud is because sometimes it is not possible to access certain areas in some castings, i.e. to weld the inside a water jacket, otherwise the welding can be ground flush. On completion a full pressure test should be carried.
On completion of the work a warranty should last a life time under normal working conditions.