Lead aluminum free enamel

A kind of enamel and enamel technology, applied in the field of metal pure aluminum and aluminum alloy surface coating, lead-free aluminum enamel enamel field, can solve the problem of acid resistance not exceeding Class A, poor acid resistance, low melting temperature, etc., to achieve acid resistance improved effect

Inactive Publication Date: 2004-11-17
SHANGHAI TIANGUANG CHEM FACTORY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] The melting temperature of metal pure aluminum and aluminum alloy is relatively low. The existing aluminum enamel enamel used for enamelling on the surface of metal pure aluminum and aluminum alloy generally contains a large amount of lead oxide in order to meet the requirements of low melting point processing technology. A high content of lead oxide will cause great pollution to the environment during the production process and use of the product; in addition, the acid resistance of the existing lead-containing aluminum enamel enamel is relatively poor, and the acid resistance generally does not exceed Class A

Method used

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  • Lead aluminum free enamel

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Embodiment Construction

[0019] The present invention will be further described below by way of examples.

[0020] Select following four groups of formulas for use, and the components of each formula are percentages by weight:

[0021] A B C D

[0022] SiO 2 37.2 36.1 35.8 37.4

[0023] B 2 o 3 8.2 8.5 8.0 9.8

[0024] R 2 O 26.5 28.6 27.1 25.6

[0025] TiO 2 28.1 26.8 29.1 27.2

[0026] External introduction

[0027] Al 2 o 3 3.6 3.5 2.2 2.5

[0028] Sb 2 o 3 2.4 1.5 3.4 3.5

[0029] where R 2 O selects Na 2 O, K 2 O and Li 2 O forms a mixed base, and the molar ratio of the three substances in A, B, C, and D is basically matched as 4:3:2.

[0030] The above formula is produced according to the following process and used on pure aluminum or aluminum alloy:

[0031] Raw material weighing—mixing—homogeneity testing—melting—quenching—drying into frit—grinding—applied on surface-treated pure aluminum or aluminum alloy billet—drying—firi...

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Abstract

The invention discloses a leadless aluminium enamel glaze of SiO2-B2O3-TiO2-R2O system for use on pure aluminum plate or aluminum alloy plate, which has the advantages of no lead pollution to environment, good acid-resisting chemical stability, fine adhesion property with base material, thus is suitable of surface decoration and protection of various colors on pure aluminium or aluminium alloys.

Description

technical field [0001] The invention belongs to the technical field of enamel enamel, and in particular relates to a lead-free aluminum enamel enamel, which is mainly used for surface coating of metallic pure aluminum and aluminum alloy. Background technique [0002] The melting temperature of metal pure aluminum and aluminum alloy is relatively low. The existing aluminum enamel enamel used for enamelling on the surface of metal pure aluminum and aluminum alloy generally contains a large amount of lead oxide in order to meet the requirements of low melting point processing technology. A high content of lead oxide will cause great pollution to the environment during the production process and use of the product; in addition, the acid resistance of the existing lead-containing aluminum enamel enamel is relatively poor, and the acid resistance generally does not exceed Class A. Contents of the invention [0003] The purpose of the present invention is to invent a lead-free al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/02C03C8/12C03C8/20
CPCC03C8/12C03C2207/08
Inventor 钱蕙春
Owner SHANGHAI TIANGUANG CHEM FACTORY
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