Abstract: A milling cutter for milling a workpiece comprising a milling head rotatable about its central longitudinal axis. A milling head carries at least one milling insert of a first grade which presents a cutting edge. The milling head carries a wiper insert of a second grade which presents a wiping edge.

Abstract: A milling cutter for milling a workpiece comprising a milling head rotatable about its central longitudinal axis. A milling head carries at least one milling insert of a first grade which presents a cutting edge. The milling head carries a wiper insert of a second grade which presents a wiping edge.

Abstract: A toolholder for removing material from a workpiece wherein the workpiece and toolholder are rotatable with respect to one another. The toolholder includes a body having a plurality of pockets. A roughing insert is carried in one of the pockets of the body. The roughing insert presents a roughing edge. The roughing insert is of a first grade. A finishing insert is carried in another of the pockets of the body. The finishing insert presents a finishing edge. The finishing insert is of a grade different than that of the roughing insert.

Abstract: A diamond-coated tool and a process for making them. The process includes a sintering step. In that step, a substrate is sintered in an atmosphere and for a time and at a temperature so that superficial, exaggerated grain growth is promoted that imparts a surface roughness which may serve as anchoring sites during a subsequent diamond coating step which is performed by a vapor deposition technique. The diamond-coated tool or wear part includes a large grain substrate surface, and a high bond strength between the diamond coating and the substrate surface.

Abstract: A diamond-coated tool or wear part and a process for making them. The process includes a sintering step. In that step, a substrate is sintered in an atmosphere and for a time and at a temperature so that superficial, exaggerated grain growth is promoted that imparts a surface roughness which may serve as anchoring sites during a subsequent diamond coating step which is performed by a vapor deposition technique. The diamond-coated tool or wear part includes a large grain substrate surface, and a high bond strength between the diamond coating and the substrate surface.

Abstract: The discoloration or off-luster border area known as "annealing border", which may form on low-carbon steel strip during box annealing of coils in commercial HNX atmospheres is eliminated by (a) subjecting the strip to oxidizing conditions such that the coil edges undergo a weight gain of 0.08 to 0.8 mg/cm.sup.2 of strip surface and (b) reducing the so-formed oxide during box annealing.

Abstract: The discoloration or off-luster border area called "annealing border" which frequently forms on low carbon tin-mill gage steel coils during box annealing in commercial HNX atmospheres is prevented from forming by providing the steel with less than 0.25 wt. %, and preferably less than 0.20 wt. % free manganese in solid solution.