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Production method of high-boron-chromium alloy

A production method and chromium alloy technology are applied in the production field of high boron-chromium alloys, which can solve the problems that equipment is difficult to achieve, and achieve the effect of meeting market demand.

Inactive Publication Date: 2010-10-27
LAIWU JINSHI SPECIAL ALLOY MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the production of such products is generally produced by the thermite method, but this method can only produce chromium-boron alloys with a boron content of 0.1%
Most of the market needs products with boron content of 16-20% and oxygen content of <0.10%, but the equipment currently used is difficult to achieve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] A kind of high boron chromium alloy production method of preferred embodiment of the present invention adopts following production steps:

[0009] 1. Add chromium oxide and other materials with a reasonable composition of aluminum powder and other reducing agents and reduction activators, stir them evenly with a mixer, and dry them properly;

[0010] Among them, according to the specific requirements of the product ingredients, the specific proportion of ingredients is calculated; the metal oxide is added according to 1.05-1.1 times the reduction stoichiometry of the chromium content; the boron agent is added according to 1.4-1.7 times the reduction stoichiometry of the boron content; Powder and other reducing agents and reduction activators are added according to the stoichiometric ratio of 0.95-1.05, wherein the ratio of aluminum powder and other reducing agents to reduction activators is 7:3 or 8:2;

[0011] 2. Put the above-mentioned materials into the reaction cruc...

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Abstract

The invention relates to a production method of a high-boron-chromium alloy, comprising the following steps of: adding reducing agents, such as aluminum powder and the like, and reduction activators to materials, such as chromic oxide and the like, uniformly stirring through a stirrer, and properly drying; then placing the materials into a reaction crucible, conveying to a sealed reactor, and vacuumizing to charge argon; then electrically igniting, and smelting; and naturally cooling to normal temperature after reaction is completed, and opening to take out a product. The boron content of the produced product is higher than that of boron-chromium alloys produced in the present market.

Description

technical field [0001] The invention relates to a production method of high boron chromium alloy. Background technique [0002] At present, the production of such products is generally produced by the thermite method, but this method can only produce chromium-boron alloys with a boron content of <15%, mostly around 13%, and an oxygen content of >0.1%. However, most of the products in the market require boron content of 16-20% and oxygen content <0.10%, but the equipment currently used is difficult to achieve. Contents of the invention [0003] In order to overcome the above defects in the prior art, the present invention provides a new method for producing high boron chromium alloy. [0004] In order to achieve the above object, the technical solution adopted in the present invention is: adopt the following production steps: add reductants such as aluminum powder and reduction activators such as reasonable ingredients to materials such as chromium oxide, stir eve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C27/06
Inventor 朱晓彤石勇朱轩
Owner LAIWU JINSHI SPECIAL ALLOY MATERIAL