Unlock instant, AI-driven research and patent intelligence for your innovation.

Silver rare earth alloy coated nickel core composite electrode wire and manufacturing method thereof

A technology of composite electrode wire and rare earth alloy, which is applied in the field of metal composite materials, can solve the problems of poor uniformity, improved material performance, coarse mixed powder particles, etc., and achieve the effects of short preparation cycle, high sphericity and uniform distribution

Inactive Publication Date: 2016-03-30
YUNNAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main disadvantages in the existing method of preparing this material: the preparation process of silver-nickel rare earth mixed powder is complicated, the cycle is long, and the cost is high; in addition, the mixed powder particles are coarse, the uniformity is poor, and the improvement of material performance is limited.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Put 1500 grams of nickel rods in the center of the circular iron casting mold and put them together into the vacuum induction furnace, then put 8450 grams of silver and 50 grams of rare earth cerium into the graphite crucible of the vacuum intermediate frequency induction furnace to melt, and then melt the evenly melted silver ornaments The alloy liquid is cast in an iron mold with a nickel rod to obtain a silver-cerium-coated nickel composite round billet with a mass percentage content of 15% nickel, 0.5% trim, and the balance being silver; the composite round billet is heated at 600°C for 2 hours, and then use a 500-ton oil extruder to heat-extrude at 400°C into a composite rod with a diameter of 6 mm; the composite rod is drawn several times at room temperature to obtain a silver-cerium-coated nickel-core composite electrode wire with a diameter of 1.5 mm.

Embodiment 2

[0015] Put 3,000 grams of nickel rods in the center of the graphite mold and put them together into a vacuum induction furnace, then put 6,930 grams of silver and 70 grams of rare earth lanthanum into the graphite crucible of a vacuum intermediate frequency induction furnace to melt, and then melt the evenly melted silver-lanthanum alloy Liquid casting in a graphite mold with a nickel rod to obtain a silver-lanthanum-coated nickel composite round billet with a mass percentage content of 30% nickel, 0.7% lanthanum, and the balance being silver; the composite round billet was heated at 700°C for 2 hours with carbon powder protection , and then hot-extruded at 450°C with a 500-ton oil extruder to form a composite rod with a diameter of 6 mm; the composite rod was drawn several times at room temperature to obtain a silver-lanthanum-coated nickel-core composite electrode wire with a diameter of 2 mm.

Embodiment 3

[0017] Put 5000 grams of nickel rods in the center of the graphite casting mold and put them together into the vacuum induction furnace, then put 4950 grams of silver and 50 grams of rare earth yttrium into the graphite crucible of the vacuum intermediate frequency induction furnace to melt, and then put the uniformly melted silver yttrium alloy Liquid casting in a graphite mold with a nickel rod to obtain a silver-yttrium-coated nickel composite round billet with a mass percentage of 50% nickel, 0.5% yttrium, and the balance being silver; the composite round billet was heated at 750°C for 2 hours with carbon powder protection , and then hot-extruded at 500°C with a 500-ton oil extruder to form a composite rod with a diameter of 6 mm; the composite rod was drawn several times at room temperature to obtain a silver-yttrium-coated nickel-core composite electrode wire with a diameter of 3 mm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a nickel core combined electrode wire coated with silver rare earth alloy and a manufacturing method thereof, and belongs to the field of metallic composite materials. The combined electrode wire is used for preparing silver-nickel rare earth composite powder in an arc spraying and atomization mode. The combined electrode wire is formed by a nickel core coated with the silver rare earth alloy, the mass percentage of the nickel core in the combined wire is 10%-60%, and the mass percentage of rare earth is 0.1%-1%. The preparation method for the combined wire includes the first step of pouring sliver rare earth alloy after vacuum melting into a mould to obtain a round composite casting blank with the diameter of 80-90mm, wherein a nickel bar is placed in the center of the mould, the second step of carrying out hot extrusion on the composite casting blank to form a bar with the diameter of 6-8mm, and the third step of carrying out cold drawing on the composite bar to form the combined electrode wire with the diameter of 1.5-3mm. According to the nickel core combined electrode wire coated with the silver rare earth alloy and the manufacturing method for the nickel core combined electrode wire coated with the silver rare earth alloy, the defects that mixed powder exist in the silver-nickel rare earth through a mechanical powder mixing method in the preparation process of existing silver-nickel rare earth powder metallurgy electric contact materials.

Description

technical field [0001] The invention belongs to the field of metal composite materials, and in particular relates to a silver-rare-earth alloy-coated nickel-core composite electrode wire for preparing silver-nickel rare-earth composite powder by arc jet atomization and a manufacturing method thereof. technical background [0002] Silver-nickel rare-earth material is an electrical contact material with excellent performance in electrical switches. Since silver and nickel are insoluble in solid state, the preparation method of this material is to melt-gas-atomize the silver rare-earth alloy into silver rare-earth alloy powder, and then mix it with nickel Powders are mechanically mixed to obtain silver-nickel rare earth mixed powder, and then prepared into electrical contact materials of required specifications according to powder metallurgy method. The existing method for preparing the material has two main disadvantages: the preparation process of silver-nickel rare earth mix...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/16B21C1/00
Inventor 秦国义谢建斌许思勇
Owner YUNNAN UNIV