Surface Technology

23/04/2008

Resurfacing alternative to chroming expands component life and reduces downtime

Hastings Deering has been an industry leader in the area of High Velocity Oxygen Fluid plating since 1997. CAST used for resurfacing hydraulic cylinder rods and other cylindrical components.


How Cat Advanced Surface Technology (CAST) works:

1. The CAST process work in the following way:

2. The Rod undergoes salvage and if required is straightened

3. New and salvaged rods are then profile blasted to remove the outer coating of the rod. This prepares the surface for the CAST process, the process requires a rough or aggregated surface to ensure a strong bond to the parent material.

4. Once the Rod is prepared the process can begin. Using the applicator nozzle combustible gasses are heated to near 5000 Deg F (2,760 Deg C), once this temperature is reached fine metal particles are merged and accelerated through the nozzle at more than 3 times the speed of sound (Mac 3). It is this process that creates the mechanical bond that melds the two surfaces together creating a coating up to 3 time stronger than chrome.

5. Once this process is complete the ruff surface is ground down to like new factory specifications

6. Once this final grinding is completed the rod is then polished to create the look of a chrome like finish.

Hastings Deering through its service network has one of the most modern and technologically advanced CAST facilities in South East Asia. Facilities include:

• 2 CAST machines

• Tandem spray mounts which double production capabilities on each machine

• Custom built spray and profile blast facility (This ensures the highest levels of quality for coatings)

• Purpose built 24/7 facility

• Contamination controlled work environments




CAST has may applications for both above and bellow ground machinery, Hastings Deering uses a number of CAST powders to achieve the right component make-up:

• Eutectic Nickel Chromium Powder – Achieves good wear and corrosion resistance

• Eutectic Nickel Chromium Powder – Achieves excellent wear and corrosion resistance

• Eutectic – Tungsten Carbide, Cobalt – Dense, hard and tough coating suited for sliding erosion e.g.: blades and pulleys

• Eutectic – Chromium Carbide, Nickel, Chromium – Closest to true chrome replacement with excellent wear and corrosion resistance