Rolling mill roll and rolling mill machine
The present invention is to provide a rolling mil roll including a rolling mill ring and a metal base in which a tensile stress applied to the rolling mill ring located along the outer circumferential face side is reduced; and then cracks thereon are prevented from occurring. The rolling mill roll 10 includes: the rolling mill roll 11 made of cemented carbide having rolling sections 13 on its outer circumferential face 11 a; and the metal base 12 located on the inner circumferential face of the rolling mill roll 11. The circumferential interface 14 , where the rolling mill ring 11 and the metal base 12 face each other, is fixed radially around its axis L by a contact pressure derived from a fitting section, and also is bound with an adhesive agent M.
1. A rolling mill roll comprising:
a rolling mill ring made of cemented carbide having one or more rolling mill sections for milling work piece on its outer circumferential face;
a ring shaped metal base located in an inner circumferential region of the rolling mill ring below the rolling mill ring on a line with the rolling mill ring perpendicular to a rotating axis of the rolling mill ring; and
a tapered sleeve below the ring shaped metal base on said line perpendicular to the rotating axis;
wherein a circumferential interface, where the rolling mill ring and the metal base face each other,
is fixed radially around its axis by a contact pressure derived from a fitting section, and also
is bound with an adhesive agent,
wherein, the circumferential interface is a tapered face which slopes to the axis and is fixed with the contact pressure by wedging the metal base into the rolling mill ring, and
wherein, a taper angle, at which the circumferential interface slops to the axis, is in the range of 0°10′ to 2°00′.
2. A rolling mill roll according to claim 1 , wherein,
the agent is a methacrylate resin type adhesive agent.
3. A rolling mill machine comprising:
a rolling mill roll comprising:
a rolling mill ring made of cemented carbide having one or more rolling mill sections for milling work piece on its outer circumferential face;
a ring shaped metal base located in an inner circumferential region of the rolling mill ring below the rolling mill ring on a line with the rolling mill ring perpendicular to a rotating axis of the rolling mill ring; and
a tapered sleeve below the ring shaped metal base on said line perpendicular to the rotating axis;
wherein a circumferential interface, where the rolling mill ring and the metal base face each other,
is fixed radially around its axis by a contact pressure derived from a fitting section, and also is bound with an adhesive agent,
wherein, the circumferential interface is a tapered face which slopes to the axis and is fixed with the contact pressure by wedging the metal base into the rolling mill ring, and
wherein, a taper angle, at which the circumferential interface slops to the axis, is in the range of 0°10′ to 2°00′;
wherein the rolling mill roll is mounted coaxially on the outer circumferential face of the tapered sleeve; and
wherein the rolling mill machine further comprises a tapered shaft section below the tapered sleeve which rotates on its axis,
wherein the tapered sleeve has a tapered inner circumferential face, and
the tapered sleeve is mounted on the tapered shaft section.
4. A rolling mill machine according to claim 3 , wherein
the adhesive agent is a methacrylate resin type adhesive agent.