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Cold working method of gh4169 superalloy wire for spring wire

A GH4169, superalloy wire technology, applied in metal processing equipment, metal extrusion cleaning equipment, manufacturing tools, etc., can solve the problems of complex process, increase processing cost, high mold consumption, shorten the process flow, reduce the deformation path Second, the effect of accurate appearance and size

Active Publication Date: 2022-05-24
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

In the traditional method of preparation, the sliding friction between the wire and the surface of the mold is large, and the surface of the material is hardened during processing, resulting in a large difference in hardness between the surface and the center of the wire, and uneven mechanical properties.
During the processing process, the friction between the wire material and the fixed die is severe, resulting in extremely high die consumption and increased processing costs
Therefore, the traditional preparation method of GH4169 alloy spring wire has disadvantages such as complicated process, uneven mechanical properties of the product, and high processing cost.

Method used

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  • Cold working method of gh4169 superalloy wire for spring wire
  • Cold working method of gh4169 superalloy wire for spring wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The GH4169 hot-rolled bar in the solid solution state with a diameter of φ8.3mm was subjected to three passes of swaging to obtain a GH4169 alloy wire for spring wire with a diameter of φ4mm. Proceed as follows:

[0016] a. The φ8.3mm hot-rolled bar is placed in a heat treatment furnace for solution treatment, and the solution-treated bar is air-cooled to room temperature; the solution-treatment temperature is 1000°C, and the solution-treatment holding time is 60 minutes;

[0017] b. The φ8.3mm rod blank after the solution treatment described in step a is soaked in a pickling solution for 15 minutes to remove the oxide layer on the surface, rinsed with water and dried to keep the surface of the blank smooth and clean, wherein the pickling solution is made of HNO 3 , HCl and H 2 O is made by mixing in a volume ratio of 1:3:4;

[0018] c, swaging the pickled wire blank described in step b, the swaging feed speed is 8mm / s, and the deformation amount is 44% to obtain a wi...

Embodiment 2

[0029] The GH4169 hot-rolled bar in solid solution state with a diameter of φ8.3mm was subjected to 4 passes of swaging to obtain a GH4169 alloy wire for spring wire with a diameter of φ3mm. Proceed as follows:

[0030] a. The φ8.3mm hot-rolled bar is placed in a heat treatment furnace for solution treatment, and the solution-treated bar is air-cooled to room temperature; the solution-treatment temperature is 1000°C, and the solution-treatment holding time is 60 minutes;

[0031] b. The φ8.3mm rod blank after the solution treatment described in step a is soaked in a pickling solution for 15 minutes to remove the oxide layer on the surface, rinsed with water and dried to keep the surface of the blank smooth and clean, wherein the pickling solution is made of HNO 3 , HCl and H 2 O is made by mixing in a volume ratio of 1:3:4;

[0032]c, swaging the pickled wire blank described in step b, the swaging feed speed is 6mm / s, and the deformation amount is 45%, to obtain a wire blank...

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Abstract

The present invention relates to the field of processing methods of GH4169 superalloy wires, in particular to a cold processing method for GH4169 high temperature alloy wires used for spring wires with high dimensional accuracy, good surface quality, superior performance and uniform structure, comprising the following steps: a, heating GH4169 The rolled bar is placed in a resistance furnace for solid solution treatment; b. Pickling is carried out to remove the surface oxide layer, and then it is taken out and rinsed with water and dried; c. Carry out swaging and drawing; d. The material is placed in a resistance furnace for annealing heat treatment ; e, soaking in acid solution for pickling to remove the surface oxide layer; f, repeating step c to step e for a total of 1 to 3 times with the material treated in step e, and then performing swaging and drawing as the final deformation ; g, repeat step d and step e, and then perform tension straightening, and finally obtain GH4169 superalloy spring wire. The invention is especially suitable for preparing GH4169 superalloy wire for spring wire.

Description

technical field [0001] The invention relates to the field of processing methods for GH4169 superalloy wires, in particular to a cold processing method for GH4169 superalloy wires for spring wires. Background technique [0002] GH4169 is a precipitation-strengthened nickel-base deformed superalloy with high high temperature strength, good oxidation resistance and corrosion resistance, and can be used for a long time under high temperature and stress above 600 °C. It is widely used in aviation, energy , chemical and nuclear industries and other important fields. With the development of aviation, energy and other industries, higher requirements are put forward for special springs. As a material with excellent high temperature mechanical properties, GH4169 can meet the requirements of service in special working environments. [0003] The high strength of GH4169 makes it difficult to deform and difficult to machine. The traditional preparation of superalloy wire mostly adopts t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C1/00B21C37/04B21C43/02B21C43/04C22F1/10C23G1/10
Inventor 陈琦付建辉周扬肖东平
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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