B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
78/40
B23K 5/18 (2006.01) B23K 9/04 (2006.01)
Patent
CA 1124554
ABSTRACT OF THE DISCLOSURE Disclosed are methods of producing hardfaced plate which eliminates distortion while making weld deposits along the length of a sheet-like plate of relatively ductile and weldable material by securing the plate about a cylindrical supporting surface, then welding hardfacing material to the plate's surface which causes the plate to shrink against and be supported by the cylindrical surface which effectively maintains the plate against substantial distortion during the welding. The plate with the welded hard- facing material is then removed from the cylindrical surface. Pre- ferably, the composition of the hardfacing material is such as to form random cracks at a frequency of not less than about one in each three inches upon cooling from the welding temperature, and preferably of the order of about 5/8" to about 3/4". Preferably, the cylindrical surface, which may be a portion of a drum, is rotated about a horizontal axis while welding one or more weld beads along the circumferential length of the plate and for ease of operation at the top of the plate's surface. The methods are particularly suited for making hardfaced plate in which the plate is not over 1/2" in thickness, for example 1/4" and 3/8" thickness plate.
336487
Arnoldy Roman F.
Borden Ladner Gervais Llp
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