Slinger ring

Patent metadata

Field	Value
Publication number	US-11065685-B2
Application number	US-201816626644-A
Country	US
Kind code	B2
Filing date	Jun 12, 2018
Priority date	Jun 30, 2017
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

A slinger, or slinger ring, for a melt spinning apparatus has a cylindrical, mechanically shaped main element that is composed of a refractory metal or a refractory metal-based alloy and has a circumferential surface running in a tangential direction. The circumferential surface is delimited in the axial direction by two end faces. A degree of deformation in the radial direction is greater than the degree of deformation in the axial direction.

First claim

The invention claimed is:

1. A slinger ring for a melt spinning apparatus, the slinger ring comprising:
a cylindrical main element composed of a refractory metal or a refractory metal-based alloy;
said main element having a circumferential surface running in a tangential direction and being delimited in an axial direction by two end faces; and
said main element being mechanically shaped in a deformation process, with a degree of deformation of said main element in a radial direction being greater than a degree of deformation in the axial direction;
wherein an average circumference-side grain aspect ratio, which is obtained in a plan view onto said circumferential surface, is smaller than an average end-face-side grain aspect ratio, which is obtained in a plan view onto one of said two end faces.

2. The slinger ring according to claim 1 , wherein the average circumference-side grain aspect ratio in the plan view onto the circumferential surface lies in a range of 1<ku<1.7.

3. The slinger ring according to claim 1 , wherein the average end-face-side grain aspect ratio, which is obtained in the plan view onto the one of the two end faces, is 1.5<=ks.

4. The slinger ring according to claim 1 , wherein an average grain size determined by a line intercept method on the circumferential surface is less than 500 μm.

5. The slinger ring according to claim 1 , wherein said main element has a preferential orientation <111> and/or <100> normal to the circumferential surface ( 2 ).

6. The slinger ring according to claim 5 , wherein the main element has a preferential orientation in the <111> direction having an intensity of greater than or equal to 1.5 times an underlying intensity normal to the circumferential surface.

7. The slinger ring according to claim 1 , consisting essentially of a molybdenum-based alloy.

8. The slinger ring according to claim 1 , consisting of a molybdenum-based alloy comprising ≥99 at % of molybdenum, MHC or TZM.

9. A melt spinning apparatus, comprising at least one slinger ring according to claim 1 , a drive device for driving the at least one slinger ring and a device for supplying a melt to a circumferential surface of the at least one slinger ring.

10. The melt spinning apparatus according to claim 9 , configured for rare earth magnet production.

Assignees

• Plansee Se

Inventors

• Huber Thomas
• Knittl Katrin
• Knabl Wolfram
• Simader Wolfgang

Classifications

• B22D11/0611

  formed by a single casting wheel, e.g. for casting amorphous metal strips or wires · CPC title

• B21J9/025

  with rolling or wobbling dies · CPC title

• C22F1/18

  High-melting or refractory metals or alloys based thereon · CPC title

• B22F3/18

  by using pressure rollers · CPC title

• B22F3/17 Primary

  by forging · CPC title