A method for treating a knife cutting edge with a laser deposition (sintering) process using a composition coating such as a diamond powder or a substance above 5 on the Mohs scale of mineral hardness. The coating providing an abrasion resistant cutting edge and creates a differential hardness on the total cutting edge. The differential hardness extends the cutting ability of the knife through a wear-resistant surface on a treated surface and a faster wear on an untreated surface causing the cutting edge to be self sharpening as the untreated surface wears away.

A method for treating a knife cutting edge with a laser deposition (sintering) process using a composition coating such as a diamond powder or a substance above 5 on the Mohs scale of mineral hardness. The coating providing an abrasion resistant cutting edge and creates a differential hardness on the total cutting edge. The differential hardness extends the cutting ability of the knife through a wear-resistant surface on a treated surface and a faster wear on an untreated surface causing the cutting edge to be self sharpening as the untreated surface wears away.

A method for producing a cutting section from a closed tubular element (14) which is in the form of a hollow cylinder and from one or more drill segments (16) which are connected to the closed tubular element (14).

A method for producing a cutting section from a closed tubular element (14) which is in the form of a hollow cylinder and from one or more drill segments (16) which are connected to the closed tubular element (14).

An accessory tool includes an adapter end having a maximum outer dimension, and a shank coupled to the adapter end. The shank includes a tool engagement portion including a cross section having a maximum outer width, a first reduced portion disposed between the tool engagement portion and the adapter end and having a first minimum outer dimension and a first length, and a second reduced portion formed in the tool engagement portion between the first reduced portion and an end of the shank. The second reduced portion is engaged by the tool to secure the shank to the tool, and has a second minimum outer dimension and a second length. The maximum outer dimension is greater than the maximum outer width. The maximum outer width is greater than the first minimum outer dimension and greater the second minimum outer dimension. The first length is greater than the second length.

An accessory tool includes an adapter end having a maximum outer dimension, and a shank coupled to the adapter end. The shank includes a tool engagement portion including a cross section having a maximum outer width, a first reduced portion disposed between the tool engagement portion and the adapter end and having a first minimum outer dimension and a first length, and a second reduced portion formed in the tool engagement portion between the first reduced portion and an end of the shank. The second reduced portion is engaged by the tool to secure the shank to the tool, and has a second minimum outer dimension and a second length. The maximum outer dimension is greater than the maximum outer width. The maximum outer width is greater than the first minimum outer dimension and greater the second minimum outer dimension. The first length is greater than the second length.

A blender blade formed of titanium or titanium alloy is described herein. The blender blade comprises a central portion and one or more blade wings extending therefrom. Each blade wing comprises a leading edge, wherein the leading edge is work hardened to cause the leading edge to have a first hardness which is harder than a second hardness of the central portion. The central portion is in an annealed condition. The first hardness is in a range of about 40-50 HRC, the second hardness is in a range of about 20-30 HRC. Subsequent to work hardening, the leading edge can undergo nitriding and/or layer deposition.

A blender blade formed of titanium or titanium alloy is described herein. The blender blade comprises a central portion and one or more blade wings extending therefrom. Each blade wing comprises a leading edge, wherein the leading edge is work hardened to cause the leading edge to have a first hardness which is harder than a second hardness of the central portion. The central portion is in an annealed condition. The first hardness is in a range of about 40-50 HRC, the second hardness is in a range of about 20-30 HRC. Subsequent to work hardening, the leading edge can undergo nitriding and/or layer deposition.

A method for hardfacing cutting blades used in industrial machinery by creating a channel in the surfaces of an oversize cutting blade that may be filled with hardface weld and machining the outer edge of the main body and channel to create a desired finish profile with a hardfaced edge. Such a cutting blade may additionally have fixed points of reference on the cutting blade which may be used to automate some or all of the process of creating and/or hardfacing a cutting blade to the desired profile.

A method for hardfacing cutting blades used in industrial machinery by creating a channel in the surfaces of an oversize cutting blade that may be filled with hardface weld and machining the outer edge of the main body and channel to create a desired finish profile with a hardfaced edge. Such a cutting blade may additionally have fixed points of reference on the cutting blade which may be used to automate some or all of the process of creating and/or hardfacing a cutting blade to the desired profile.