Water-soluble protective coating for heat treatment of nonferrous metals

A technology for protective coatings and non-ferrous metals. It is applied in the field of protecting metals from oxidation during heat treatment and is easy to clean protective coatings. It can solve the problems of increased production costs and labor costs, increased peeling and polishing equipment, and troublesome handling, etc. problems, to achieve the effect of saving coating drying time, prolonging metal protection time, and saving subsequent processing procedures

Inactive Publication Date: 2015-03-11
XIANYANG BREIT IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the annealing process, the oxidation of non-ferrous metals brings troubles to the subsequent treatment, not only the addition of peeling process and peeling and polishing equipment
However, increasing a certain processing allowance in the molding process will not only increase the production cost and labor cost, but also cause a waste of raw materials.
At present, most of the coatings used in domestic heat treatment are silicate or low-temperature heavy metal glass. Although they can protect non-ferrous metals to a certain extent, they will affect the properties of the metal surface. The follow-up treatment is more troublesome and must be mechanically removed. Peeling or pickling improves the surface quality; mechanical peeling is easy to cause metal waste, and pickling will not only cause metal waste but also cause environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The main components of a protective coating for beryllium bronze annealing are phosphate glass: 63.5%, absolute ethanol 32.5%, and epoxy resin 4%.

[0025] A phosphate glass composition in a protective coating for beryllium bronze annealing is: phosphorus pentoxide: 53.2 percent; diboron trioxide: 4.1 percent; sodium oxide: 35.3 percent; calcium oxide 7.4 percent.

[0026] A preparation method for preparing the protective coating for the annealing of the above-mentioned ferrous metals is as follows: after mixing the raw materials for preparing phosphate glass according to the phosphate glass components, adding them to the crucible in the carbon rod furnace, fully melting at 800 ° C, and then The tableting is carried out to obtain the basic glass required for the preparation of the non-ferrous metal protective coating of the present invention. Add raw materials according to the ratio of phosphate glass and absolute ethanol to a ball mill jar for ball milling for 8 hours,...

Embodiment 2

[0032] The main components of a protective coating for beryllium bronze annealing are phosphate glass: 62.5%, absolute ethanol 15.6%, acetone: 15.6%, epoxy resin: 6.3%.

[0033] The composition of phosphate glass in a protective coating for beryllium bronze annealing is: phosphorus pentoxide: 64.3%; diboron trioxide: 8%; sodium oxide: 25.7%; zinc oxide: 2%.

[0034] A preparation method for preparing the protective coating for the annealing of the above-mentioned ferrous metals is as follows: after mixing the raw materials for preparing phosphate glass according to the phosphate glass components, add them to the crucible in the carbon rod furnace, fully melt them at 850 ° C, and then The tableting is carried out to obtain the basic glass required for the preparation of the non-ferrous metal protective coating of the present invention. Add the raw materials according to the ratio of phosphate glass and absolute ethanol to the ball mill tank for 8 hours and then add epoxy resin ...

Embodiment 3

[0040] The main components of a protective coating for beryllium bronze annealing are phosphate glass: 63.3%, anhydrous acetone: 31.6%, poly-n-butyl methacrylate: 5.1%.

[0041] The composition of phosphate glass in a protective coating for beryllium bronze annealing is: phosphorus pentoxide: 70%; diboron trioxide: 3%; sodium oxide: 25%; zinc oxide: 2%.

[0042] A preparation method for preparing the above-mentioned protective coating for annealing non-ferrous metals is: after mixing the raw materials for preparing phosphate glass according to the phosphate glass components, adding them to the crucible in the carbon rod furnace, fully melting them at 900°C, and then The tableting is carried out to obtain the basic glass required for the preparation of the non-ferrous metal protective coating of the present invention. Add the raw materials according to the ratio of phosphate glass and absolute ethanol to the ball mill tank for 9 hours and then add epoxy resin and continue the b...

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Abstract

The invention relates to a water-soluble protective coating for heat treatment of nonferrous metals. The water-soluble protective coating comprises phosphate glass, ethanol, acetone, epoxy resin and poly(n-butyl methacrylate). According to the invention, phosphate glass and ethanol or acetone are mixed according to the ratio of 2:1, and the mixture undergoes ball milling for 8 hours; poly(n-butyl methacrylate) and epoxy resin are added after 8 hours of ball milling, and ball milling is carried out again for 30 min; and slurry is sieved through a sieve of 200-300 meshes. The metal protective coating isolates external atmosphere to protect a metal profile matrix from being oxidized and begins to protect from the low temperature 200 DEG C so as to form a wide protective temperature range. In the high temperature range of 400-600 DEG C, a good glass phase is formed such that the protective coating plays a good protection role. A water-soluble method is adopted after heat treatment so as to remove the coating. Thus, metal loss by post-treatment is minimized, and processes of post-treatment are simplified. During the application process, as drying speed is fast, operation time is saved and environmental pollution caused by post-treatment is reduced. The invention relates to an efficient reusable energy-saving environmentally-friendly annealing protective coating.

Description

1. Technical field [0001] The invention relates to a water-soluble protective coating for heat treatment of non-ferrous metals, in particular to a protective coating for protecting metals from oxidation during heat treatment and being easy to clean, a preparation method and application thereof. 2. Background technology [0002] Non-ferrous metal is a kind of metal with relatively active chemical stability. It is widely used in industry, electric power and other fields. rigidity. In the annealing process, the oxidation of non-ferrous metals brings troubles to the subsequent treatment, not only the peeling process and peeling and polishing equipment must be added. However, increasing a certain processing allowance in the molding process not only brings about an increase in production costs and labor costs, but also causes a waste of raw materials. At present, most of the coatings used in domestic heat treatment are silicate or low-temperature heavy metal glass. Although they...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/68
Inventor 赵小齐尹勇
Owner XIANYANG BREIT IND & TRADE
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