Improve Hardfacing Procedures

Category:

Equipment Maintenance

Description:

A procedure for increasing carbide concentrations in tungsten carbide hardfacing has been

developed. This procedure increases the carbide concentrations from 60 to 85 percent. In

changing the normal high/chrome, high/carbon hardfacing to a tungsten carbide deposit, wear life

on the 30-in. cutterhead dredge PAPOOSE increased from 350,000 yd3 to 1,750,000 yd3. The

process involved using a MIG carbide system, instead of a tungsten carbide electrode system.

Substantially greater wear life is achieved with essentially the same material, tungsten carbide.

Another recent innovation in prolonging the life of dredge parts is the automation of hardfacing

elbows and "Y's." Complete hardfacing of double 90-deg turns or S's is now possible on the

inside of dredge pipes as small as 10-in. System is very inexpensive and easy to use. Hardfacing

companies are located throughout the United States.

Reviewer:

C. Woolley

Company / Organization(s):

Projects Completed:

Numerous, in U.S. and Asia

Information Sources:

Literature:

Title:

"Two New Developments in Hardfacing Dredge Parts"

Author:

J.C. "Moe" Messinger

Month:

September

Year:

1997

LitType:

Periodical

Publisher:

World Dredging Mining & Construction

Publisher Address:

PO Box 17479 Irvine, California 92623

Publisher Phone:

714 553-0836

Page:

Chapter 5 Other Technologies Reviewed