Claims
- 1. A method for affixing a stem to a disc which includes an x-ray target affixed to a selected surface area of a substrate to make an anode assembly for a rotating x-ray anode tube comprising
- (a) preheating the disc, wherein the substrate comprises a material which is one selected from the group consisting of molybdenum and molybdenum-based alloys to a predetermined range of elevated temperature of from about 200.degree. C. to about 400.degree. C.;
- (b) placing the preheated disc and a stem, which comprises a material which is one selected from the group consisting of columbium, columbium 291, columbium 103, and columbium-1Zr, to be joined together in inertia welding apparatus whereby the respective surface areas thereof to be inertia welded together are in an abutting relationship with each other;
- (c) subjecting the positioned disc and stem to a predetermined flywheel moment of inertia of from about 9#-ft.sup.2 to about 19#-ft.sup.2, an axial pressure of from about 35,000 psi to about 50,000 psi and a predetermined spindle speed of from about 1400 RPM to 2800 RPM, and
- (d) joining the stem to the disc by a weld joint formed at the interface of the abutting surface areas as a result of subjecting the disc and stem to the axial pressure.
- 2. The method of claim 1 and further including
- forming the substrate of the disc by pressing and sintering.
- 3. The method of claim 2 and further including
- forging the pressed and sintered substrate to a predetermined shape.
- 4. The method of claim 1 and further including
- forming the substrate of the disc by forging, and recrystallizing the material of the forged substrate.
Parent Case Info
This is a division of application Ser. No. 788,247, filed Apr. 18, 1977.
US Referenced Citations (4)
Divisions (1)
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Number |
Date |
Country |
Parent |
788247 |
Apr 1977 |
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