Hardfaced member and method of attaching hardfacing element thereto

Claim 3

A method according to claim 1 which includes interposing stop-off material between the said faces of said members except in the region of said recess means.

Claim 4

A method according to claim 1 in which said recess means comprises at least two recesses in spaced relation, said plug means comprising a plug in each recess, said second member overlying both of said recesses.

Claim 5

A method according to claim 1 in which said recess means comprises at least one hole extending through said first member, said plug means comprising a plug loosely receivable in said hole.

Claim 6

A method according to claim 4 which includes interposing a body of brazing material between said plug and said face of said second member, and applying pressure to the end of said plug which faces away from said second member while developing brazing temperature in the plug to cause said braze material to melt and extrude into the space between the peripheries of said plug and hole.

Claim 7

A method according to claim 5 which includes applying flux to the regions to be joined by the braze material and applying stop-off material between said faces of said members outside the range of said hole.

Claim 8

A method according to claim 1 in which said recess means comprises at least two holes in said first member, placing a plug in each hole, placing brazing material between each plug and the said one face of said second member, applying stop-off material between said faces in at least the region surrounding each said hole, and developing heat in said plugs while pressing said plugs toward said second member to cause said brazing material to melt and extrude into the space between the peripheries of the plugs and holes thereby to fix said plugs to both of said members while preventing the establishment of permanent stresses in said members due to differential thermal expansion and contraction.

Claim 9

A method according to claim 1 in which the plug fits the recess with capillary clearance, placing a disc of braze material between the end of the plug and the opposed face of said second member, and developing brazing temperature in at least said plug to cause the braze material to melt and connect the plug to the second member and to flow along the plug and thereby connect the plug to the first member.

Claim 10

In combination; a steel support member having an area exposed to abrasion in use and hardfacing material on said area, said hardfacing material comprising at least one plate formed of a cemented hard metal carbide, said plate being of substantial area relative to the thickness thereof and disposed in face to face engagement with said area, a hole in said support member open toward said plate and of substantially smaller area than said plate, a plug in said recess and having one end engaging said plate, and braze material connecting the plate to the plug and the plug to the support member and confined to the region of said one end of the plug and the periphery thereof.

Claim 11

In combination; a steel support member having an area exposed to abrasion in use and hardfacing material on said area, said hardfacing material comprising at least one plate formed of a cemented hard metal carbide, said plate being of substantial area relative to the thickness thereof and disposed in face to face engagement with said area, a hole in said support member open toward said plate and of substantially smaller area than said plate, a plug in said recess and having one end engaging said plate, and braze material connecting the plate to the plug and the plug to the support member and confined to the region of said one end of the plug and the periphery thereof.

Claim 12

A combination according to claim 9 which includes stop-off material between said support member and said plate over the region of said plate which surrounds said one end of the plug.

Claim 13

A combination according to claim 9 in which said support member has a notch formed in one face thereof and in which said plate is seated, said hole having the axis disposed a substantial distance from each edge of a plate in said notch.

Claim 14

A combination according to claim 9 in which said plate has a thickness which is a fraction of any lateral dimension thereof, said plate being seated in said notch and having a planar face engaging said planar bottom surface of the notch, said support member having a second notch therein at the side opposite said plate for receiving the edge of a work member to which the support member is connected.

Claim 15

In combination; an elongate rib-like work meMber having a free outer edge, a plurality of like support members fixed to said edge in side by side relation, said support members on one side each having a surface, said surfaces when taken together being continuous, each support member having hole means in the form of at least one hole extending therein through the said surface, plate means in the form of at least one plate of a hard wear resistant hardfacing material in face to face engagement with each surface and extending a substantial distance radially outwardly beyond the respective hole, a plug freely fitting each hole and having one end engaging the respective plate, and braze material connecting each plate to the respective plug and each plug to the respective support member and confined to the immediate region of the plug.

Claim 16

In combination; an elongate rib-like work meMber having a free outer edge, a plurality of like support members fixed to said edge in side by side relation, said support members on one side each having a surface, said surfaces when taken together being continuous, each support member having hole means in the form of at least one hole extending therein through the said surface, plate means in the form of at least one plate of a hard wear resistant hardfacing material in face to face engagement with each surface and extending a substantial distance radially outwardly beyond the respective hole, a plug freely fitting each hole and having one end engaging the respective plate, and braze material connecting each plate to the respective plug and each plug to the respective support member and confined to the immediate region of the plug.

Claim 17

A combination according to claim 13 in which each support member has two of the said plates thereon in side by side relation, said plate in the lateral direction being coextensive with the respective support member, said support member having a said hole for each plate and a said plug for each hole.

Claim 18

A combination according to claim 13 in which each support member has a single said plate thereon and which is coextensive with the said support member in the lateral direction.

Claim 19

A combination according to claim 15 in which each said support member has two holes therein and a plug in each hole, each plug being connected to the same said plate.