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Fluidized bed furnace central drum alloy and production method thereof

A production method and boiling furnace technology are applied in the field of high temperature wear-resistant alloy materials to achieve the effects of strong oxidation resistance, long service life and strong oxidation resistance

Inactive Publication Date: 2009-07-08
HENAN HONGYU SPECIAL CASTINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a fluidized furnace central cylinder alloy and its production method, thereby solving the problem of wear resistance of the fluidized furnace central cylinder under high temperature conditions above 1000°C

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  • Fluidized bed furnace central drum alloy and production method thereof
  • Fluidized bed furnace central drum alloy and production method thereof
  • Fluidized bed furnace central drum alloy and production method thereof

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Embodiment Construction

[0023] For better understanding of the present invention, below in conjunction with specific embodiment is further described:

[0024] 1. The chemical composition design of the central cylinder of fluidized fluidized furnace:

[0025] Chemical composition is the key factor determining the performance of alloys. To solve the problem of metal wear resistance under high temperature conditions, a reasonable composition design must be carried out first. Through comprehensive comparison and analysis, the present invention is determined to be based on chromium and nickel alloys, and adopts the combination of dominant alloying factors (chromium, nickel) and auxiliary elements (nitrogen, titanium, niobium, tungsten, rare earth) to form alloy materials. One is to obtain the austenite matrix, and the other is to form MC carbide and reduce M23C6 carbide, so as to ensure the oxidation resistance, creep resistance and wear resistance of the alloy material at high temperature.

[0026] Chro...

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Abstract

The invention discloses a fluid-bed furnace center barrel alloy using the chromium-nickel alloy as the essential element. The alloy comprises the following components by weight percentage: C of 0.25-.60, Cr of 26.00-30.00, Ni of 9.00-12.00, Si of 0.80-1.50, Mn of 1.00-2.00, N of 0.15-0.30, Mo of 0.20-0.50, W of 0.50-1.00, Ti of 0.20-0.60, Nb of 0.20-0.60, V of 0.20-0.50, Re of 0.20-0.50, S<=0.04, P<=0.05, and Fe of the rest.The manufacturing process of the fluid-bed furnace center barrel comprises steps of moulding preparation, smelting and pouring and thermal treatment. The invention solves a technical problem that the existing fluid-bed furnace center barrel is non-wear-resistant and strain cracking under a high temperature, and the invention has three main advantages of high stretching and rigidity specific elongation index at normal temperature, strong oxidation resistance and antiwear quality at high temperature and service life longer than that of the existing products.

Description

Technical field: [0001] The invention relates to a high-temperature wear-resistant alloy material, in particular to a fluidized furnace central cylinder alloy and a production method thereof. In particular, it relates to an aluminum hydroxide fluidized furnace central cylinder alloy and a production method thereof. Background technique: [0002] Most of the complete sets of aluminum hydroxide equipment operate at high temperature, and the heat-bearing parts are often located at the core of high-temperature equipment. The quality of the heat-bearing parts directly affects the normal operation of the entire equipment. Among them, the fluidized fluidized furnace is an important device for the entire alumina production, and it is the key equipment in the finished product stage, which is related to the production efficiency of the entire company, and the central cylinder is the key heat-bearing component of the fluidized fluidized furnace. Aluminum hydroxide is calcined into alu...

Claims

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Application Information

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IPC IPC(8): C22C38/50C22C38/58C22C33/04
Inventor 戴萍张田喜张金凤孙玉福范乃文朱孝祥宋蕾郭文辉
Owner HENAN HONGYU SPECIAL CASTINGS
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