Preparation method of silicon, aluminum, potassium and molybdenum alloy wire

Abstract

The invention provides a preparation method of a silicon, aluminum, potassium and molybdenum alloy wire, and relates to a production method of the silicon, aluminum, potassium and molybdenum alloy wire used for manufacturing a light pin, a core wire and a bracket wire. The production method is characterized by comprising the steps of: (1), heating a molybdenum blank to be 1500-1550 DEG C in a process of rotatably swaging a silicon, aluminum and potassium alloy molybdenum rod blank, keeping the temperature for 40-60min for a rotary swaging, and keeping the temperature constant in the rotary swaging process; (2), carrying out online heating in a cluster-striking machining process, and keeping the temperature to be 1300-1350 DEG C; and (3), when a molybdenum rod is welded, controlling the voltage applied to a welding machine to be 450-500V and the initial pressure applied to a welding machine electrode base before welding and during welding to be 0.1-0.2MPa as well as pre-forging pressure to be 0.2-0.3MPa. The method provided by the invention has the advantages of no increase of additional investment, stable welding process and high strength of welding spots; the working efficiency and the molybdenum wire yield during the subsequent processing are improved; and the prepared silicon, aluminum, potassium and molybdenum alloy wire meeting the single-weight requirement is prepared.

Description

technical field [0001] The invention discloses a method for preparing silicon-aluminum-potassium-molybdenum alloy wire, relating to a production method for silicon-aluminum-potassium-molybdenum alloy wire used for making lamp pins, core wires and support wires. Background technique [0002] Molybdenum is a refractory metal with high high-temperature strength, good electrical and thermal conductivity, low expansion coefficient and easy processing, so it is used in special bulbs such as automotive tungsten halogen lamps, high-pressure sodium lamps, and lighting tungsten halogen lamps. Widely used in light source devices, molybdenum wire is usually used to make bulb hooks, core wires for winding filaments, guide rods, lead-out wires and plastic brackets and other parts; it is widely used as wire-cut molybdenum wire in the metal processing industry, kilns It is used in the industry as a heating element for hydrogen furnaces. At present, the processing of molybdenum wire usually...

AI Technical Summary

Problems solved by technology

Since Si, Al, and K elements mostly exist in the form of oxides in silicon-aluminum-potassium-molybdenum alloys doped with Si, Al, and K elements, compared with pure molybdenum and molybdenum-lanthanum alloys, in the production process of large single-weight molybdenum wire Among them, it is very difficult to weld silicon aluminum potassium molybdenum rods together. Even if they are barely welded together, due to the low strength of the solder joints, it is easy to open the welds from the solder joints in the subsequent processing, resulting in the inability to produce large orders. Heavy molybdenum wire cannot meet the customer's demand for large single weight molybdenum wire

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