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Production of FeNi-expansion alloy

An expansion alloy and production method technology, applied in the field of metal materials, can solve problems such as cracks in steel ingots or billets, low yield of disc rounds, strong heat sensitivity, etc., to shorten the production process, simplify the production process, and reduce production costs Effect

Inactive Publication Date: 2007-09-05
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From smelting and feeding to rolling out the disc, there are many processes and the process is long; and the expansion alloy itself is very thermally sensitive, cracks are easy to appear in the steel ingot or billet during the heating process, and these defects directly lead to the low yield of the disc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Example 1: According to smelting varieties such as 4J43, 150Kg non-vacuum induction furnace is used for smelting, and the raw materials required for smelting are electrolytic nickel, industrial pure iron, metal manganese and the special grain refiner for this steel type described in the patent of the present invention ——Titanium metal, process the selected metal raw materials to a reasonable size so that they can be loaded into the selected furnace, and bake the processed raw materials at 200°C to 800°C to remove the surface moisture and subcutaneous gas of the raw materials and other impurities to obtain qualified raw materials.

[0018] The above-mentioned raw materials are calculated according to the standard chemical composition requirements (such as 4J43 industry standards), and a raw material preparation list is obtained. Then prepare the required quantity of raw materials according to the list of raw materials, and prevent the surrounding environment from polluti...

example 2

[0025] Example 2: According to the smelting variety such as 4J43, 150Kg non-vacuum induction furnace is used for smelting, and the raw materials required for smelting are electrolytic nickel, industrial pure iron, metal manganese and the special grain refiner for the steel type described in the patent of the present invention ——A binary alloy composed of 42% titanium and 58% niobium. Process the selected metal raw materials to a reasonable size so that they can be loaded into the selected furnace, and bake the processed raw materials at 200°C to 800°C to remove impurities such as moisture on the surface of the raw materials and subcutaneous gas, and obtain qualified raw material.

[0026] The above-mentioned raw materials are calculated according to the standard chemical composition requirements (such as 4J43 industry standards), and a raw material preparation list is obtained. Then prepare the required quantity of raw materials according to the list of raw materials, and pre...

example 3

[0033] Example 3: According to the smelting variety such as 4J43, adopt 150Kg non-vacuum induction furnace for smelting, and select the raw materials required for smelting to be electrolytic nickel, industrial pure iron, metal manganese and the special grain refiner for this steel type described in the patent of the present invention ——A ternary alloy composed of 35% metal titanium, 39% metal niobium, and 26% metal cerium. Process the selected metal raw materials to a reasonable size so that they can be loaded into the selected furnace, and bake the processed raw materials at 200°C to 800°C to remove impurities such as moisture on the surface of the raw materials and subcutaneous gas, and obtain qualified raw material.

[0034]The above-mentioned raw materials are calculated according to the standard chemical composition requirements (such as 4J43 industry standards), and a raw material preparation list is obtained. Then prepare the required quantity of raw materials accordin...

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PUM

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Abstract

Production of Fe-Ni expansion alloy is carried out by smelting by non-vacuum or vacuum induction furnace, adding grain refining agent into steel water, rolling while keeping stable, casting blank by continuous casting machine, scaling, wiredrawing to obtain wire blank in proportion of wire blank diameter: disc diameter=1.1-1.5:1-1.1:1, deforming and wire drawing. It costs low by 50-60%, shortens production flow path, simplifies production process and improves lumber recovery by 30%.

Description

technical field [0001] The invention belongs to the field of metal materials, in particular to a production method of Fe-Ni series expansion alloy. Background technique [0002] Under normal circumstances, the production of Fe-Ni series expansion alloys requires a vacuum induction furnace or a non-vacuum induction furnace to smelt the prepared raw materials, and then the smelted products are subjected to electroslag remelting, and the remelted steel ingots are used in the forging process. ; Vacuum induction furnace or non-vacuum induction furnace can also be used to smelt the prepared raw materials and cast ingots, and then peel or grind the steel ingots for the forging process. The steel ingot entering the forging process is first subjected to high-temperature annealing treatment, then forged (or billeted) at high temperature, and finally the surface of the billet is ground. The steel slab with the surface treated is sent to the heating furnace again for heating, and rolle...

Claims

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Application Information

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IPC IPC(8): C22C38/08C22C33/04C21C7/00B22D11/00B21C1/00
Inventor 杨晓华陈伟庆崔东瑞
Owner UNIV OF SCI & TECH BEIJING
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