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High-temperature alloy wire preparation method capable of being used for increasing yield of high-temperature alloy rivets

A high-temperature alloy and high-yield technology, which is applied in the field of high-temperature alloy wire preparation, can solve problems such as rivet scrapping and cracks on the edge of the rivet head, and achieve the effect of eliminating scratches

Active Publication Date: 2020-06-26
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If damaged wire is used for rivet production, especially when the rivet head is formed at high temperature, cracks will often form on the edge of the rivet head, resulting in the scrapping of the rivet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] Specifically, the method for preparing a superalloy wire that can be used to increase the yield of a superalloy rivet includes the following steps:

[0024] A. After the surface treatment of the Φ8.0~12.0mm superalloy initial wire rod, solution annealing treatment is carried out under the protection of an inert gas, and then the diameter is reduced to Φ6.5±0.2mm by drawing with a fixed die single drawing machine;

[0025] B. Then use a continuous drawing roller mode wire drawing machine to reduce the diameter of the drawn wire to Φ6.5±0.2mm to the specification of Φ2.4mm≤specification<Φ6.3mm to obtain a high-temperature alloy wire;

[0026] Among them, in step A: when Φ10.2mm<initial wire ≤Φ12.0mm, the diameter is reduced to Φ10.0±0.2mm, the diameter is reduced to Φ8.0±0.2mm and the diameter is reduced to When Φ6.5±0.2mm, solution annealing is carried out under the protection of inert gas; When the diameter reaches Φ6.5±0.2mm, solution annealing is carried out under th...

Embodiment 1

[0041] Embodiment 1: Adopt the present invention to prepare GH4169 wire rod

[0042] A. The Φ12.0mmGH4169 initial wire rod produced on the straight-through high-speed wire rod rolling mill is surface-treated by grinding, and then solution annealed under the protection of 99.99% nitrogen; then the end of the initial wire rod with a taper of 60° is fixed In the mold single drawing machine, draw and reduce the diameter to Φ10.0mm at the outlet speed of 5m / min, and then perform solution annealing treatment under the protection of 99.99% nitrogen; then continue to draw and reduce the diameter to Φ8 at the outlet speed of 5m / min .0mm, and then carry out solution annealing treatment under the protection of 99.99% nitrogen gas; then continue to draw and reduce the diameter to Φ6.5mm at a wire speed of 8m / min, and then carry out solution annealing treatment under the protection of 99.99% nitrogen gas;

[0043] B. Use a continuous drawing roller mode wire drawing machine to reduce the d...

Embodiment 2

[0046] Embodiment 2: Adopt the present invention to prepare GH3030 wire rod

[0047] A. The Φ12.0mmGH3030 initial wire rod produced on the straight-through high-speed wire rod rolling mill is surface-treated by grinding, and then solution annealed under the protection of 99.99% nitrogen; then the end of the initial wire rod with a taper of 60° is fixed In the mold single drawing machine, draw and reduce the diameter to Φ10.0mm at the outlet speed of 8m / min, and then perform solution annealing treatment under the protection of 99.99% nitrogen; then continue to draw and reduce the diameter to Φ8 at the outlet speed of 8m / min .0mm, and then carry out solution annealing treatment under the protection of 99.99% nitrogen gas; then continue to draw and reduce the diameter to Φ6.5mm at a wire speed of 8m / min, and then carry out solution annealing treatment under the protection of 99.99% nitrogen gas;

[0048] B. Use a continuous drawing roller mode wire drawing machine to reduce the d...

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Abstract

The invention discloses a high-temperature alloy wire preparation method capable of being used for increasing yield of high-temperature alloy rivets, and belongs to the technical field of high-temperature alloy wire preparation. Aiming to solve the problems of scratches, peeling, dirt and the like on the surface of a drawn high-temperature alloy wire in the prior art, the high-temperature alloy wire preparation method comprises the following steps of drawing and reducing an initial wire with the diameter phi of 8.0 mm-12.0 mm to 6.5 mm + / -0.2 mm on a fixed die single drawing machine; and reducing the diameter through using a continuous drawing type roller mode wire drawing machine to phi 2.4 mm which is less than or equal to specification < phi 6.3 mm. According to the preparation method,the advantages of a fixed die single drawing machine and a roller die type wire drawing machine are combined; and meanwhile, specific solution annealing treatment procedures are designed according toinitial wires and target wires of different specifications, the surface of the prepared wire is free of quality defects, the prepared wire can serve as a raw material for high-temperature alloy rivetproduction, and the yield of the wire is increased to 90% or above from 60%.

Description

technical field [0001] The invention belongs to the technical field of high-temperature alloy wire preparation, and in particular relates to a high-temperature alloy wire preparation method that can be used to improve the yield of high-temperature alloy rivets. Background technique [0002] Riveting has the advantages of simple operation, convenient replacement, small connection deformation, and low requirements on the connection environment, and has been widely used in the aerospace field. With the continuous promotion and improvement of metallurgical methods, more and more materials are used to make rivets. Superalloys are widely used in aerospace and energy fields because they can work for a long time at high temperatures above 600°C and under certain stresses, and have good oxidation resistance and thermal corrosion resistance. At the same time, superalloys are generally based on iron, nickel, and cobalt, and are strengthened by adding chromium, molybdenum, niobium, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/02C22F1/18B21C1/02
CPCB21C1/02C22F1/002C22F1/02C22F1/18
Inventor 冯兆龙唐新新田晓琳申学良
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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