PTA proves its worth in high-volume hardfacing jobs

Journal Article · Thu Feb 01 04:00:00 EST 1996 · Welding Journal

OSTI ID:218533

Raghu, D; Webber, R ^[1]

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1. Deloro Stellite, Goshen, IN (United States). Stellite Coatings Div.

Imparting wear and corrosion resistance to metal surfaces by providing a hard surface is the basis for hardfacing. The realization of the economic advantage of increased wear by providing a metal deposit on a relatively low-cost substrate has spurred the growth of hardfacing over the last half century. Plasma transferred arc (PTA) hardfacing and laser beam hardfacing are relative newcomers to this arena. Hardfacing with PTA is ideal for high-volume hardfacing where a high degree of quality, reliability and consistency is required. Significant advances in materials and equipment have helped to spur the advancement of the technology and the wider acceptance by industry. It is believed that in the future, PTA hardfacing systems will be developed that rely a great deal on microprocessors and robotics, more so than at present. These would further enhance the product quality and consistency and would enable tailor-made PTA system designs for multiple applications. The quest for new materials for PTA hardfacing that combine wear and corrosion resistance and weldability is expected to continue. Newer applications are constantly being developed as more and more medium- and small-scale operators realize the advantages that can be derived from the use of PTA hardfacing. The basic driving force for these improvements and growth is quality, reliability, productivity and significant long-term cost reduction.

• OSTI ID: 218533
• Journal Information: Welding Journal, Journal Name: Welding Journal Journal Issue: 2 Vol. 75; ISSN 0043-2296; ISSN WEJUA3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT BASE ALLOYS
COMPOSITE MATERIALS
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
HARD FACING
IRON BASE ALLOYS
NICKEL BASE ALLOYS
NUCLEAR INDUSTRY
PLASMA ARC SPRAYING
PLASTICS
POWER GENERATION
PROTECTIVE COATINGS
USES
WEAR RESISTANCE