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A magnesium smelting reduction tank and its manufacturing method

A production method and technology of reducing tanks, applied in chemical instruments and methods, chemical/physical processes, etc., can solve the problems of only 60-70 days of service life, easy creep of the tank body, short service life, etc., and achieve good high temperature Antioxidant properties, effect of improving oxidation resistance and corrosion resistance, reducing tendency of flaking

Active Publication Date: 2019-02-15
蚌埠市圣光化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of tank has low heat resistance, short service life, unstable quality, high temperature oxidation, and is also corroded by sulfur-containing gas at high temperature. The tank body is prone to creep, deformation and cracks, making it prematurely invalid.
Longitudinal depression and transverse bending deformation occurred in less than two months of use. Although it can be corrected, the service life is only 60-70 days

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: A reduction tank for magnesium smelting, including a tank body, a cap head and a cooling water jacket. The tank body is centrifugally cast, one end of the tank body is welded to the cap head, and the other end of the tank body is riveted to the cooling water jacket The composition of welding, tank body and cap head is as follows: C: 0.05%5, Cr: 22%, Ni: 10%, AL: 2.5%, Si: 1.5%, Re: 0.02%, S: 0.03%, P: 0.02%, the balance is Fe

[0016] The centrifugal casting process of the tank body comprises the following steps:

[0017] Step 1) Proportioning is carried out according to the alloy elements of the above-mentioned magnesium refining reduction tank;

[0018] Step 2) Melting the alloy in an intermediate frequency induction furnace;

[0019] Step 3) After the molten steel is melted, when the furnace temperature is 1700°C, prepare a test piece to test the chemical composition of the molten steel by spectroscopy, adjust the chemical composition of the molten steel...

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Abstract

The invention belongs to the technical field of metal smelting, and particularly relates to a novel efficient magnesium smelting reduction tank and a manufacturing method thereof. The novel efficient magnesium smelting reduction tank comprises a tank body, a top head and a cooling water jacket, the tank body is formed by centrifugal casting, one end of the tank body is in welded connection with the top head, the other end of the tank body is welded with the cooling water jacket in a riveting mode, the tank body and the top head comprise, by weight, 0.03-0.07% of C, 20-27% of Cr, 8-12% of Ni, 2-3% of Al, 1-2% of Si, 0-0.03% of Re, 0-0.03% of S, 0-0.03% of P, and the balance Fe. By the adoption of the reasonable manufacturing process, chrome, nickel, tungsten, manganese and other beneficial elements are added, the contents of harmful elements like carbon, sulfur and phosphorus are controlled, a novel Fe-Cr-Ni-Al dual-phase heat resisting alloy is researched, the heat resisting temperature of the alloy is improved to 1200-1280 DEG C, the superior castability and weldability are obtained, the good mechanical performance and high-temperature oxidation resistance performance are obtained at high temperature, and the service life is more than twice that of similar products.

Description

technical field [0001] The invention belongs to the technical field of metal smelting, and in particular relates to a magnesium smelting reduction tank and a manufacturing method thereof. Background technique [0002] Magnesium metal is a kind of lightweight metal structure material, which has good metal properties and can be combined with various metals to produce lightweight high-strength alloy materials, which are widely used in aviation, aerospace, metallurgy, transportation and other departments. The main production processes for producing magnesium are silicothermal method and electrolysis method. In the process equipment of silicothermal magnesium smelting technology, the reduction tank is an important equipment unit, and the reduction tank is a consumable part, accounting for about 10% of the production cost. The working conditions of the reduction tank are harsh, and the periodical production is likely to cause serious oxidation corrosion and the strength at high te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/06
CPCB22D13/00C22B26/22C22C38/002C22C38/02C22C38/06C22C38/34C22C38/40
Inventor 张永建张哲陈海坤
Owner 蚌埠市圣光化工有限公司
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