Our services
We provide a wide range of heat treatment services to meet our clients needs. It is our policy that the highest priority is given to all aspects of quality, health, safety and the environment in all activities and projects.
Electrical Resistance
Pre heat
One of the key factors in welding materials together is Pre Heating of the material. Pre Heating is applied to raise the temperature of the parent material prior to welding. The Pre Heating assists in slowing the cooling rate during welding. Slowing the cooling rate also allows hydrogen generated from moisture associated with the welding process to escape the weld pool as it hardens and reduces the risk of cracking and martensite formation.
Post weld heat treatment
welding by its nature generates residual stresses, as thermal stresses may be introduced by temperature gradients. Technically a part is stressed beyond its elastic limit and plastic flow occurs. The objective of a stress relief heat treatment is to heat the part to a sufficiently high temperature to reduce the residual stresses to an acceptable level. In welding, the term 'Post Weld Heat Treatment' is more widely used, as the purpose of this heat treatment may be to bring about the relief of residual stresses and/or to produce a particular metallurgical structure or material properties.
Hydrogen diffusion
The hydrogen diffusion or bake-out process can be carried out on materials that have been subject to the uptake of diffusible hydrogen during service. The process can be undertaken in advance of any welding operations to reduce the hydrogen content to a safe level prior to the welding operation on older materials and also immediately after the pre heat stage.
Gas Fired Heat Treatments
Heat Treatment Services have many years of experience in this field, our high velocity gas burner system can be used for a whole host of applications. Full furnace refractory dry outs, PWHT of vessels and temporary furnaces being some of the more common uses.
