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Chloride-salt-containing protective agent with oxidation resistance for lead hath furnace

An anti-oxidation and chloride salt technology, applied in the field of alloys, can solve the problems of unstable performance and can not effectively prevent the volatilization of lead vapor, and achieve the effects of excellent volatilization resistance, improved surface quality, and high specific heat.

Inactive Publication Date: 2018-07-17
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest feature of the common low melting point molten salt is that its performance is unstable, and it is easy to react with the lead melt itself to form oxide film and nitride film.
This compound film on the surface of the melt cannot effectively prevent the volatilization of lead vapor into the atmosphere

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A chloride-containing salt-containing protective agent for lead-bath furnaces with anti-oxidation performance at 490 degrees. By weight percentage, the chemical composition of the material is: NaCl: 10.5wt.%, BaCl 2 :4.8wt.%,MgCl 2 :2.1wt.%,AlCl 3 : 1.4wt.%, B 2 o 3 : 2.8wt.%, MnO: 1.4wt.%, the balance is CaO. Preparation method: Raw material NaCl, BaCl 2 , MgCl 2 , AlCl 3 , B 2 o 3 , the particle radii of MnO and CaO were kept below 0.5 mm. Put the raw materials weighed according to the above ratio in the mixer for uniform mixing. Due to BaCl 2 , MgCl 2 and CaO easily absorb moisture and CO in the air 2 , The mixing process must be carried out in a dry atmosphere, and the mixing time cannot be longer than 20 minutes. The salt-containing protective agent mixed evenly must be packaged in plastic bags.

[0020] The covering agent has a good application effect in the range of 480-580 degrees. Its characteristic is that it can melt by itself in this temperat...

Embodiment 2

[0023] A chloride-containing salt-containing protective agent for a lead bath furnace with anti-oxidation performance at 520 degrees by weight percentage. By weight percentage, the chemical composition of the material is: NaCl: 11.5wt.%, BaCl 2 :4.6wt.%, MgCl 2 :2.8wt.%,AlCl 3 : 2.5wt.%, B 2 o 3 : 3.2wt.%, MnO: 1.4wt.%, the balance is CaO. Preparation method: Raw material NaCl, BaCl 2 , MgCl 2 , AlCl 3 , B 2 o 3 , the particle radii of MnO and CaO were kept below 0.5mm. Put the raw materials weighed according to the above ratio in the mixer for uniform mixing. Due to BaCl 2 , MgCl 2 and CaO easily absorb moisture and CO in the air 2 , The mixing process must be carried out in a dry atmosphere, and the mixing time cannot be longer than 20 minutes. The salt-containing protective agent mixed evenly must be packaged in plastic bags.

[0024] The covering agent has a good application effect in the range of 480-580 degrees. Its characteristic is that it can melt by i...

Embodiment 3

[0027] A chloride-containing salt-containing protective agent for lead-bath furnaces with anti-oxidation performance at 540 degrees. By weight percentage. By weight percentage, the chemical composition of the material is: NaCl: 11.5wt.%, BaCl 2 :4.2wt.%, MgCl 2 :2.5wt.%,AlCl 3 : 1.6wt.%, B 2 o 3 : 3.0wt.%, MnO: 1.5wt.%, the balance is CaO. Preparation method: Raw material NaCl, BaCl 2 , MgCl 2 , AlCl 3 , B 2 o 3 , the particle radii of MnO and CaO were kept below 0.5mm. Put the raw materials weighed according to the above ratio in the mixer for uniform mixing. Due to BaCl 2 , MgCl 2 and CaO easily absorb moisture and CO in the air 2 , The mixing process must be carried out in a dry atmosphere, and the mixing time cannot be longer than 20 minutes. The salt-containing protective agent mixed evenly must be packaged in plastic bags.

[0028] The covering agent has a good application effect in the range of 480-580 degrees. Its characteristic is that it can melt by ...

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Abstract

The invention discloses a chloride-salt-containing protective agent with oxidation resistance for a lead hath furnace and a processing technology thereof. The alloy comprises, by weight, 10.0%-12.0% of NaCl, 4.0%-6.0% of BaCl2, 2.0%-5.0% of MgCl2, 1.0%-3.0% of AlCl3, 2.0%-4.0% of B2O3, 1.0%-2.0% of MnO and the balance CaO. Through development of the protective agent, the difficult problems existing in lead bath heat treatment technological applications can be solved, it plays a vital effect on popularization of lead bath heat treatment, and it is of great economic significance to industrial production.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a lead alloy covering agent. Background technique [0002] The output and structural varieties of steel cords in my country are increasing year by year. Steel cord manufacturers have also been committed to the optimization of production processes. Through equipment improvement and process adjustment, the broken wire rate of each production process is continuously reduced, and production efficiency and comprehensive yield are improved. . The change of quenching method in production practice has brought a great improvement to the stability and efficiency of steel cord production. Quenching is a key process in the production of medium and high carbon steel wire, especially the final heat treatment quenching process. The steel wire is quenched to obtain a sorbite structure. Such a structure has a high tensile limit, and the steel wire can obtain good comprehensive properties after dra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/607
CPCC21D1/607
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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