Cobalt and molybdenum doped magnesium alloy electrode wire and manufacturing method thereof

Abstract

The invention provides a cobalt and molybdenum doped magnesium alloy electrode wire and a manufacturing method thereof. The electrode wire is a molybdenum alloy electrode wire for wire cutting, wherein the molybdenum alloy electrode wire for wire cutting is manufactured in the manner of adding a cobalt element and a molybdenum element to molybdenum dioxide powder and carrying out powder metallurgy and machining. The manufacturing method comprises the steps that the molybdenum dioxide powder is loaded in a blender mixer; a cobalt nitrate solution and a magnesium nitrate solution are mixed and then placed in a liquid adding device and are added into the blender mixer in a spray manner, and mixing is carried out while adding is carried out; after adding is finished, pure water is added to wash the liquid adding device, and washing liquid is added into the blender mixer; mixing and drying are carried out; the molybdenum dioxide powder doped with the cobalt element and the molybdenum element is taken out after being cooled to room temperature; and secondary reduction is carried out to manufacture doped molybdenum powder and the cobalt and molybdenum doped magnesium alloy electrode wire is manufactured in a machined manner through powder screening, mixing, blank pressing, intermediate-frequency sintering, rotary swaging, stringing, drawing and annealing. The high temperature performance, strength of extension, discharging efficiency and damage resistance of molybdenum wires for electrospark wire cutting are improved, and the application value of the electrode wire for wire cutting is increased.

Description

Technical field [0001] The invention relates to a molybdenum alloy electrode wire for wire cutting and a manufacturing method thereof, in particular to a cobalt-doped magnesium-molybdenum alloy electrode wire and a manufacturing method thereof. Background technique [0002] Wire cutting production technology is widely used in the machining industry. The electrode wire used for wire cutting is the main consumable. The wire cutting molybdenum wire is a molybdenum metal electrode wire made of molybdenum. It is used for the wire cutting machine tool with high-voltage electric field and continuous movement. For processing the workpiece, the molybdenum metal electrode wire can perform pulse spark electro-erosion on the workpiece and cut the metal into shape. [0003] At present, there are two main types of wire cutting electrode wires: [0004] 1. Use molybdenum wire of pure molybdenum with a molybdenum content greater than 99% as the wire cutting electrode wire to cut metal workpieces in...

AI Technical Summary

Problems solved by technology

[0008] 2. The strength of the material is low

[0009] 3. Insufficient discharge performance of the material

[0010] 4. Insufficient damage resistance of materials

[0011] 5. Insufficient comprehensive performance of materials

When the diameter is Φ0.18mm, under the same cutting conditions, the average metal cutting amount of the first wire electrode is about 200000mm in a single feeding 2 , the second type of electrode wire has an average metal cutting amount of 300,000mm in a single feeding 2 , the molybdenum wire will be broken or the molybdenum wire will be seriously worn out and need to be replaced