Method for preparing enamel coating

A coating and enamel technology, applied in the field of enamel coating preparation, can solve the problems of rising cost of enamel products, high energy consumption, complicated enamel production process, etc. Effect

Active Publication Date: 2011-02-16
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the traditional enamel preparation technology has gone through the process of firing enamel in a kiln, the enamel production process is complicated, energy consumption is large, and the cost of enamel products has risen sharply

Method used

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  • Method for preparing enamel coating
  • Method for preparing enamel coating

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preparation example Construction

[0032] The preparation method of concrete enamel coating comprises the following content, at first prepare the used enamel powder of thermal spraying; Second metal substrate is carried out pretreatment; The prepared enamel powder is packed in the required spray gun feed tank of thermal spraying again, with Oxygen-acetylene flame preheats the surface of the metal substrate, and then turns on the feeding switch, so that the enamel powder falls from the material tank and is sprayed out from the combustion flame at the nozzle end of the spray gun with the air flow, and the enamel powder becomes molten droplets after passing through the high-temperature flame , under the action of gas pressure, it hits the metal substrate at high speed, forming an enamel coating that is firmly combined with the substrate on the surface of the metal substrate.

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying d...

Embodiment 1

[0035] The preparation method of described enamel coating comprises the following steps:

[0036] Step 1, preparation of enamel glaze powder;

[0037] According to the mass fraction of 40% SiO2, 18% B2O3, 15% Al2O3, 5% CaO, 17% K2O, 1% NiO, 4% Mn2O3, the raw materials are mixed and ground evenly, and then added to a furnace with a temperature of 1100 ° C for 1 hour to keep the temperature Its molten, brushed without knots. Pour the molten glaze into cold water to quench it, remove it from the water when finished, and place it in an oven to dry. Put 68% molten glaze, 15% SiO2, 12% clay, and 5% borax into a ball mill jar for ball milling for 10 hours by mass fraction, and get enamel powder through a 200-mesh sieve;

[0038] Step 2, pretreatment of metal matrix;

[0039] Degrease and degrease the metal substrate with a lye with a pH of 8; pickle it with a sulfuric acid solution with a volume fraction of 10%; rinse it with distilled water for 5 minutes; Keep it in the lye for ...

Embodiment 2

[0050] The preparation method of described enamel coating comprises the following steps:

[0051] Step 1, preparation of enamel glaze powder;

[0052] According to the mass fraction of 60% SiO2, 10% B2O3, 7% Al2O3, 10% CaO, 5% K2O, 3% NiO, 5% Mn2O3, the raw materials are mixed and ground evenly, and then added to a furnace with a temperature of 1250 ° C for 2 hours to keep the temperature Its molten, brushed without knots. Pour the molten glaze into cold water to quench it, remove it from the water when finished, and place it in an oven to dry. Put 90% molten glaze, 7% SiO2, 2% clay, and 3% borax into a ball mill for 30 hours by mass fraction, and pass through a 200-mesh sieve to obtain enamel powder;

[0053] Step 2, pretreatment of metal matrix;

[0054] Degrease and degrease the metal substrate with a lye with a pH of 13; pickle it with a sulfuric acid solution with a volume fraction of 5%; rinse it with distilled water for 2 minutes; put it in a boiling water with a mass ...

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Abstract

The invention discloses a method for preparing an enamel coating, which comprises the following steps of: preparing enamel glaze powder; pretreating a metal matrix; and preparing the enamel coating by thermal spray. In the method for preparing the enamel coating, a kiln porcelain glaze sintering process is replaced by a thermal spray generating process, the prepared enamel coating is uniformly combined with the surface of the metal matrix, and tightness and binding force of the enamel coating with the metal matrix is good; and the preparation method simplifies the production process of the enamel coating, improves the productivity and reduces the consumption of energy and the production cost of the enamel coating.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a method for preparing an enamel coating. Background technique [0002] In addition to hydrofluoric acid, enamel can resist various concentrations of organic and inorganic acids, and its comprehensive anti-corrosion performance is unmatched by other materials. Most of the containers used to hold strong corrosive media in chemical production are made of enamel products. In addition, enamel has excellent high temperature resistance. At the same time, enamel has the mechanical strength of metal, and it is often coated on the surface of metal materials to provide protection for metal substrates. [0003] At the same time, since the enamel coating can endow metal materials with special properties such as wear resistance, corrosion resistance, heat resistance, radiation resistance, and light, electricity, heat, and magnetism, the surface is smooth without micropores and ...

Claims

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Application Information

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IPC IPC(8): C03C8/14C23C4/10C23C4/11
Inventor 焦方方
Owner CHERY AUTOMOBILE CO LTD
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