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High-temperature salt bath furnace deoxidizing agent and deoxidizing method thereof

A high-temperature salt and deoxidizer technology, applied in heat treatment baths, heat treatment equipment, manufacturing tools, etc., can solve problems such as decarburization and surface oxidation of parts, achieve low cost, convenient procurement, and eliminate surface oxidation and decarburization.

Inactive Publication Date: 2020-04-21
SHANXI BUYEASY MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a high-temperature salt-bath furnace deoxidizer and its deoxidation method in order to solve the problem that existing high-speed steel and high-alloy steel have severe surface oxidation and decarburization phenomena during quenching and heating.
[0010] The selection of the components and content of the deoxidizer is obtained through a large number of repeated experiments, which overcomes the serious problems of surface oxidation and decarburization of the existing high-speed steel and high-alloy steel during quenching and heating.

Method used

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  • High-temperature salt bath furnace deoxidizing agent and deoxidizing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A high-temperature salt bath furnace deoxidizer is composed of the following parts by mass of raw materials: 65 parts of titanium dioxide; 35 parts of silica gel.

[0017] A method for deoxidizing the deoxidizer of a high temperature salt bath furnace adopts the following steps:

[0018] a. Raise the high temperature salt bath furnace to 1300℃;

[0019] b. The reaction cage is made of stainless steel. The reaction cage includes a cylindrical cage 1. The upper end of the cylindrical cage 1 is provided with a lifting handle 2. The cylindrical surface and the bottom surface of the cylindrical cage 1 have several liquid inlets 3, and the cylindrical cage The inner wall of the bottom surface of the body 1 is provided with tin foil;

[0020] c. Put the deoxidizer into the reaction cage, and then slowly enter the reaction cage into the middle of the salt bath of the high temperature salt bath furnace for reaction. After the reaction is over, take out the reaction cage and stir evenly ...

Embodiment 2

[0025] A high-temperature salt-bath furnace deoxidizer is composed of the following parts by mass: 67 parts of titanium dioxide; 33 parts of silica gel.

[0026] A method for deoxidizing the deoxidizer of a high temperature salt bath furnace adopts the following steps:

[0027] a. Raise the high temperature salt bath furnace to 1310℃;

[0028] b. The reaction cage is made of stainless steel. The reaction cage includes a cylindrical cage 1. The upper end of the cylindrical cage 1 is provided with a lifting handle 2. The cylindrical surface and the bottom surface of the cylindrical cage 1 have several liquid inlets 3, and the cylindrical cage The inner wall of the bottom surface of the body 1 is provided with tin foil;

[0029] c. Put the deoxidizer into the reaction cage, and then slowly enter the reaction cage into the middle of the salt bath of the high temperature salt bath furnace for reaction. After the reaction is over, take out the reaction cage and stir evenly with a stainless ...

Embodiment 3

[0034] A high-temperature salt bath furnace deoxidizer is composed of the following parts by mass: 59 parts of titanium dioxide; 41 parts of silica gel.

[0035] A method for deoxidizing the deoxidizer of a high temperature salt bath furnace adopts the following steps:

[0036] a. Raise the high temperature salt bath furnace to 1290℃;

[0037] b. The reaction cage is made of stainless steel. The reaction cage includes a cylindrical cage 1. The upper end of the cylindrical cage 1 is provided with a lifting handle 2. The cylindrical surface and the bottom surface of the cylindrical cage 1 have several liquid inlets 3, and the cylindrical cage The inner wall of the bottom surface of the body 1 is provided with tin foil;

[0038] c. Put the deoxidizer into the reaction cage, and then slowly enter the reaction cage into the middle of the salt bath of the high temperature salt bath furnace for reaction. After the reaction is over, take out the reaction cage and stir evenly with a stainless ...

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Abstract

The invention relates to a metallurgical manufacturing deoxidizing technology and particularly relates to a high-temperature salt bath furnace deoxidizing agent and a deoxidizing method thereof, and solves problems of serious part surface oxidation and decarburization phenomena during quenching heating of high-speed steel and high-alloy steel in the prior art. The deoxidizing agent for the high-temperature salt bath furnace is prepared from raw materials, by mass, 59-67 parts of titanium dioxide and 33-41 parts of silica gel. The deoxidizing agent for the high-temperature salt bath furnace isadvantaged in that the deoxidizing agent is placed in the middle of a salt bath by utilizing the weight of a reaction cage, barium titanate with a good melting point is generated through full reactionwith oxide in the salt bath, slagging is conducted to facilitate slag fishing, the deoxidation effect is greatly improved, then the phenomena of part surface oxidation and decarburization are eradicated, and the beneficial effects that raw materials are convenient to purchase, and cost is low are achieved.

Description

Technical field [0001] The invention relates to metallurgical manufacturing deoxidation technology, in particular to a high-temperature salt bath furnace deoxidizer and a deoxidation method thereof. Background technique [0002] The medium used in the high temperature salt bath furnace is 100% industrial barium chloride (BaCl2·2H2O). At the same time, the industrial barium chloride contains a small amount of NaCl and strontium, sulfide, iron, water-insoluble matter and other impurities. The melting point is 960℃. Temperature 1100℃-1350℃, mainly used for quenching and heating of high speed steel and high alloy steel. [0003] When quenching and heating high-speed steel and high-alloy steel, there are the following shortcomings: [0004] First, industrial barium chloride reacts with oxygen at high temperature. After a period of use, barium oxide or a small amount of sodium oxide is generated. The chemical reaction formula is: BaCl2+O2=BaO+Cl2, 2NaCl+½O2=Na2O+Cl2. As time goes by, the...

Claims

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Application Information

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IPC IPC(8): C21D1/46C21D1/18
CPCC21D1/46C21D1/18
Inventor 苗建军马凯升程永红李保平邹智平
Owner SHANXI BUYEASY MACHINERY MFG
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