Processes

oil-header

Oil Hardening

We have the ability to harden ferrous alloys by quenching in oil.  Oil Hardening steels  become hard by cooling from a high temperature in one of our wells of oil.

Annealing

We can soften metals by treating with sustained heat at the required temperature, followed by cooling at a controlled rate, while at the same time producing desired results in other properties or micro-structure.  Annealing generally refers to slow cooling in carbon and alloy steels with the focus usually being on removing stresses; inducting softness; altering ductility, toughness, electric, magnetic or other physical and mechanical properties; changing crystalline structure and finally producing a definite micro-structure.

Stress Relieving

Stress relieving is normally done after rough machining, but before final finishing such as polishing or grinding.  Parts that have tight dimensional tolerances, and are going to be further processed, for example by nitrocarburizing, must be stress relieved.  Welded structures can be made tension free by stress relieving.

Stress Relieve/Normalizing
• Up to 72”x42”x42”

Straightening

Straightening is a post-heat treating process to bring shafts, blades or other parts into tolerance for straightness.

Straightening

Blasting

Blasting provides a clean finish to metal that has been heat treated.  Using our state-of-the-art equipment we have the capability to provide Aluminum Oxide, Steel Shot and Glass Bead Blasting.

Blasting Before and After Aluminum Oxide Blasting - web

 

Brazing

Brazing is a versatile metal joining method which is available for a range of alloys, including steels, cast iron, and nickel alloys.  Despite the increasing use of modern adhesives and automated welding processes, brazing remains an economical and efficient method for fabricating a wide variety of parts, ranging from automotive components to parts for gas turbines.

Shrink Fit

Shrink-fitting is a procedure which is used to fit together two parts, at least one of which is metal, with an interference fit.  The fitting can be carried out by expanding the outer metal part and allowing it to shrink onto the other part as it cools. Alternatively, an inner metal part can be shrunk by sub-zero treating and then allowed to expand into the other part as it heats up to room temperature.

Normalizing

Through normalizing, steel can obtain a more fine-grained homogeneous structure with predictable properties and machinability. During normalizing, the material is heated to a temperature approximately equivalent to the hardening temperature (800-920°C).  At this temperature new austenitic grains are formed. The austenitic grains are much smaller than the previous ferritic grains.  After heating and a short soaking time the components are cooled.  During cooling, new ferritic grains are formed with a further refined grain size. In some cases, both heating and cooling take place under protective gas to avoid oxidation and decarburisation.

Stress Relieve/Normalizing
• Up to 96”x42”x42”

Metallurgical Lab

Complete on-site metallurgical lab capable of performing case depth verification, carbon percentage, microstructure analysis, material analysis and magnetic particle inspection.

 

Ferritic Nitride Carburizing (FNC)