Rare earth molybdenum alloy wire and preparation method thereof

Abstract

The invention relates to a rare-earth molybdenum alloy wire and its process for preparing. The invention is characterized in that the said alloy wire contains two rare-earth oxides including lanthanum oxide and Y oxide(mass %) which is 0.4 %-1.0% of the alloy amount and the proportion by weight of lanthanum oxide and Y oxide is 4:1. The process for preparing is different from the traditional powder metallurgy productive technology, which includes performing double-cone vacuum drying and liquid-solid doping at molybdenum dioxide stage, then performing secondary reduction to prepare binary rare-earth doping molybdenum powder, finally preparing rare-earth doping molybdenum wire with Mo-La-Y of 0.5-0.8mm diameter by impression, agglomeration and pressure processing procedure. Compared with the pure molybdenum, the product is of good high-temperature behavior and high recrystallization temperature which increases by 300-500 DEG C than the pure molybdenum, and is of high intensity and abrasive resistance, low ductility and long durability, which has wide application in the mechanical process industry.

Description

technical field [0001] A rare earth molybdenum alloy wire material and a preparation method thereof relate to a molybdenum alloy wire material used for parts in special light bulbs and electric light source devices, metal processing cutting wires and heating wires in kilns and a preparation method thereof. Background technique [0002] Because refractory metal molybdenum has high high temperature strength, good electrical and thermal conductivity, low expansion coefficient and easy processing, it is used in special bulbs and electric light source devices such as automotive tungsten halogen lamps, high-pressure sodium lamps, lighting tungsten halogen lamps, etc. Molybdenum wire is widely used to manufacture parts such as bulb hooks, core wires for winding filaments, guide rods, lead-out wires, and plastic brackets. It is widely used as wire-cut molybdenum wire in the metal processing industry, and in the kiln industry. It is used as heating wire for hydrogen furnace. However...

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Problems solved by technology

In the metal processing industry, wire-cut molybdenum wire is required to have high strength, high wear resistance, low plasticity, and long service life. In contrast, pure molybdenum wire has low strength, poor wear resistance, high plasticity, and long service life. Short, can not meet the needs of users in the machinery industry

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