HFW has been hardfacing industrial process equipment for 75 years. In doing so, we have accumulated extensive information and experience to successfully accomplish difficult applications on all types of material.
Our extensive job record library and established procedures and application parameters enables us to repeat successful applications even after many years. Up to date welding equipment, supported by our ISO 9001 registered quality system ensures we meet our customer's expectations.
All applications start with knowledge of the base metal, the overlay desired or recommended, and definitive acceptance criteria. The process used can depend upon many factors including the size of the part and/or area to be hardfaced, the hardness requirements, and economics. Once chosen, the weld procedure is selected or designed to accomplish the desired result.
Regardless of the process used, it is important that the weld procedure specifies:
- Preheat temperatures
- Interpass temperatures
- Post weld cooling and treatments
- Number of weld passes required
- Filler metal size, feed rates
- Finishing methods and acceptance criteria
- Inspection methods
- Liquid penetrant
Only with this information will the application be successful and repeatable.
HFW capabilities include:
- Extensive machining and grinding
- Thermal spray: Plasma, HVOF, Metallizing, Spraywelding
- Plasma Transferred Arc