Water heater enamel liner and enamel powder

A kind of enamel glaze and water heater technology, which is applied in the direction of fluid heater, lighting and heating equipment, etc., can solve the problems of micro cracks or silver streaks, reduced life of enamel inner tank, corrosion and perforation of inner tank, etc., and achieve reduction of fish scales And gray crack phenomenon, improve surface finish and texture hardness, reduce the effect of sintering time

Active Publication Date: 2016-04-06
WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the enamel layer will dissolve in water. Once the enamel layer is excessively dissolved and the steel plate is in contact with water, the inner tank will be corroded and perforated, causing the water heater to leak
Ordinary enamel has poor water resistance, high weight loss in boiling water due to enamel powder composition and process reasons, and is prone to micro cracks or silver streaks and porcelain explosion, which greatly reduces the life of the enamel liner.

Method used

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  • Water heater enamel liner and enamel powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] This embodiment proposes a kind of water heater enamel liner, and this liner is made according to the following method:

[0018] Step 1: The steel plate is processed into an inner tank blank, that is, a steel plate layer through shearing, stamping, stretching, welding and other processes, and the thickness of the steel plate layer is preferably 0.8-3.5 mm.

[0019] Step 2: Clean, degrease, pickle, neutralize, dry, etc. the surface of the inner wall of the blank of the liner before enamel treatment, so as to facilitate the adhesion of the enamel glaze layer.

[0020] Step 3: Prepare the enamel glaze powder according to the following weight percentages:

[0021] 40-55% SiO 2 , 5-10% Na 2 O, 5-15% of B 2 o 3 , 5-7% Al 2 o 3 , 0.05~0.2% Fe 2 o 3 , 3~6% K 2 O, 5-23% ZrO 2 , 3~7% CaF 2 , 2.5-4% NaF, 3-10% Co 3 o 4 , 2~10% CoO, 0.2~0.5% MnO 2 , 2~4% Li 2 o 2 , 3 to 10% SiC.

[0022] Step 4: Apply the prepared enamel slurry on the inner wall of the blank of the...

Embodiment 2

[0035] Based on Example 1, this example uses a steel plate with a carbon content of 0.07%, a titanium content of 0.06%, an aluminum content of 0.0001%, a manganese content of 0.28%, a sulfur content of 0.02%, and a silicon content of 0.37%.

[0036] The percentage of each component in the enamel glaze powder is: 49% SiO 2 , 5% Na 2 O, 8% of B 2 o 3 , 5.5% Al 2 o 3 , 0.2% Fe 2 o 3 , 4% K 2 O, 7% ZrO 2 , 5% CaF 2 , 2.8% NaF, 3% Co 3 o 4 , 3% CoO, 0.5% MnO 2 , 2% Li 2 o 2 , 5% SiC.

Embodiment 3

[0038] Based on Example 1, this example uses a steel plate with a carbon content of 0.07%, a titanium content of 0.06%, an aluminum content of 0.0001%, a manganese content of 0.28%, a sulfur content of 0.02%, and a silicon content of 0.37%.

[0039] The percentage of each component in the enamel glaze powder is: 48% SiO 2 , 5% Na 2 O, 5% B 2 o 3 , 5% Al 2 o 3 , 0.1% Fe 2 o 3 , 3% K 2 O, 8% ZrO 2 , 4% CaF 2 , 2.7% NaF, 5% Co 3 o 4 , 5% CoO, 0.2% MnO 2 , 3% Li 2 o 2 , 6% SiC.

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Abstract

The invention discloses an enameled inner container for a water heater and enameling glaze powder. An enameled glaze layer of the enameled inner container of the water heater is prepared from the enameling glaze powder. The enameling glaze powder consists of the following components in percentage by weight: 40 to 55 percent of SiO2, 5 to 10 percent of Na2O, 5 to 15 percent of B2O3, 5 to 7 percent of Al2O3, 0.05 to 0.2 percent of Fe2O3, 3 to 6 percent of K2O, 5 to 23 percent of ZrO2, 3 to 7 percent of CaF2, 2.5 to 4 percent of NaF, 3 to 10 percent of Co3O4, 2 to 10 percent of CoO, 0.2 to 0.5 percent of MnO2, 2 to 4 percent of Li2O2 and 3 to 10 percent of SiC. The enameled inner container for the water heater is low in boiling water weight loss, high in water resistance and corrosion resistance, free of cracks or crazes and enamel explosion and long in service life.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to an enamel liner and enamel powder for the water heater. Background technique [0002] At present, the inner tanks of storage water heaters mainly include stainless steel inner tanks, galvanized inner tanks, plastic inner tanks and enamel inner tanks. The inner tank is the container for the water heater to hold water. If it is in contact with water for a long time, it will corrode and cause the inner tank to leak. Therefore, it is necessary to consider how to reduce corrosion in essence, and the enamel of the enamel liner is one of the means. The enamel liner is coated with a layer of enamel glaze layer on the inner wall of the steel plate, and the glaze layer is used to isolate the contact between water and the steel plate to prevent the steel plate from being corroded and causing water leakage. However, the enamel layer will dissolve in water. Once the enamel layer is ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/06F24H9/00
Inventor 尹忠韩宝东王明曲绍鹤
Owner WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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