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Cold machining method for GH4099 high-temperature alloy wire

A technology of high-temperature alloy wire and cold processing, applied in metal processing equipment, manufacturing tools, hammers, etc., can solve the problems of increasing production costs of enterprises, affecting economic benefits, and damage to the surface of wire materials, so as to reduce uneven deformation and excellent surface quality , the effect of uniform distribution of tissue

Active Publication Date: 2021-04-02
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

However, when drawing with a fixed die, in order to ensure the life of the reducing die and the smooth drawing of the wire, it is necessary to use a mixed substance of solid powder and granular as a lubricant for lubrication during the production process, due to its granular substance Shape, when in contact with the wire material, it will often cause damage to the surface of the wire material, resulting in a high defect rate, increasing the production cost of the enterprise, and affecting economic benefits

Method used

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  • Cold machining method for GH4099 high-temperature alloy wire
  • Cold machining method for GH4099 high-temperature alloy wire

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Experimental program
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Effect test

specific Embodiment 1

[0024] A1. Place the hot-rolled bar with a diameter of φ10mm in a heat treatment furnace with a protective atmosphere for solution heat treatment; the temperature of the solution heat treatment is 1150°C, and the holding time of the solution heat treatment is 60min; the bar after solution heat treatment carry out air cooling;

[0025] B1, the φ10mm bar after the solution heat treatment described in the above step A1 is passed through φ10mm → φ7.8mm (deformation 39%) → φ6.5mm (deformation 31%) → φ5.3mm (deformation) using a swaging machine weight 36%)→φ4.3mm (deformation 34%) four-pass rotary forging reduction treatment, vacuum annealing treatment is carried out in a vacuum heat treatment furnace after each pass reduction, and the vacuum degree is -3 Pa, the annealing temperature is 1050°C, the holding time is 30min, and the annealing cooling method is filled with argon for cooling;

[0026] C1. The annealed wire material of φ4.3mm obtained in step B1 is subjected to the last p...

specific Embodiment 2

[0029] A2. Place the hot-rolled bar with a diameter of φ8mm in a heat treatment furnace with a protective atmosphere to carry out solution heat treatment; the temperature of the solution treatment is 1130° C., and the holding time of the solution treatment is 60 minutes;

[0030] B2, the φ8mm bar after the solid solution treatment described in the above step A2 is passed through φ8mm→φ6.3mm (deformation 38%)→φ5.0mm (deformation 37%)→φ4.0mm (deformation) by swaging machine 36%)→φ3.2mm (deformation 36%) four-pass rotary forging diameter reduction treatment, vacuum annealing treatment is carried out in a vacuum heat treatment furnace after each pass diameter reduction, and the vacuum degree is -3 Pa, the annealing temperature is 1050°C, the holding time is 30min, and the annealing cooling method is filled with argon for cooling;

[0031] C2. The annealed wire material of φ3.2mm obtained in step B2 is subjected to the last pass of swaging to reduce the diameter to φ3mm (12% deforma...

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Abstract

The invention discloses a cold machining method for a GH4099 high-temperature alloy wire, belongs to the technical field of high-temperature alloy wire preparation, and provides the cold machining method for the GH4099 high-temperature alloy wire, which can improve the surface quality of the wire. The cold machining method comprises the steps that A, solid solution heat treatment is carried out; B, intermediate billet rotary swaging reducing treatment is carried out, specifically, multi-pass annealing rotary swaging reducing treatment is carried out on a bar obtained in the step A through a rotary swaging process, and the rotary swaging deformation of each pass is controlled to be 30% - 45%; and after each pass of rotary swaging reducing treatment, a vacuum heat treatment furnace is adopted for annealing treatment, the vacuum degree is less than 10 <-3> Pa, the annealing temperature is 1050 DEG C - 1100 DEG C, and the heat preservation time is 10 min - 30 min; and C, a finished productis prepared. A wire product prepared through the cold machining method is uniform in structure distribution and free of coarse grain structure; and the surface of the wire is free of defects such ascracks and pits, and the wire has the characteristics of being high in dimensional precision, excellent in surface quality and the like.

Description

technical field [0001] The invention relates to the technical field of high-temperature alloy wire preparation, in particular to a cold working method for GH4099 high-temperature alloy wire. Background technique [0002] GH4099 is a typical age-strengthened nickel-based superalloy. This alloy has excellent comprehensive mechanical properties, and its service temperature can reach about 1000 ° C. It is an aging nickel-based superalloy with a relatively high service temperature. [0003] At present, the GH4099 superalloy wire is mainly obtained by rolling the Φ8.00mm~10.0mm rod as the raw material, and the process method of reducing the diameter and drawing with a fixed die and adding intermediate solution heat treatment, this type of equipment The structure is simple, the investment is small, and it is widely used in the production of various wire materials. However, when drawing with a fixed die, in order to ensure the life of the reducing die and the smooth drawing of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J7/16B21J5/06C22F1/10C22F1/02
CPCB21J7/16B21J5/06C22F1/10C22F1/02
Inventor 付建辉周扬陈琦肖东平
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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