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A high toughness enamel coating

A high-toughness, enamel technology, applied in the field of enamel coating, can solve the problems of affecting the service life of the enamel liner, cracks on the enamel body, and poor toughness of the enamel layer, so as to improve the resistance to thermal shock and water pressure. performance, improving toughness, and overcoming cracking effects

Active Publication Date: 2017-03-08
JIANGYIN SILICON GENERAL ENAMEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the other hand, when in use, the enamel liner also needs to withstand sudden changes in the pressure of cold and hot water entering and exiting the water pipes and the sudden change in temperature difference in an instant, which can easily induce cracks in the enamel layer and even cause damage to the enamel layer. Damage is especially easy to occur at the overlapping weld of the inner tank head and barrel body, such as figure 1 , figure 2 shown
In addition, due to the poor toughness of the enamel layer during transportation, the existing enamel liner is also very prone to collision and cracking, which affects the service life of the enamel liner

Method used

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Experimental program
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Effect test

Embodiment 1

[0035] A high-toughness enamel coating includes: a porcelain layer base material and an abrasive,

[0036] The mass ratio of the porcelain base material is as follows:

[0037] SiO 2 50

[0038] al 2 o 3 1.0

[0039] ZrO 2 5

[0040] TiO 2 2

[0041] B 2 o 3 10

[0042] Li 2 O 3

[0043] Na 2 O 15

[0044] CaF 2 2

[0045] Na 2 SiF 6 2

[0046] CoO 1.5

[0047] NiO 0.3

[0048] MnO 0.3;

[0049] The mass portion proportioning of described ground addition thing is as follows:

[0050] Glaze 100

[0051] Quartz sand 25

[0052] Nano Toughener 5

[0053] Magnesium carbonate 0.5

[0054] Borax pentahydrate 0.5

[0055] Sodium aluminate 0.3

[0056] Sodium nitrite 0.3,

[0057] Among them, the nano-toughener includes 80 (wt)% nano-ZrO 2 and 20(wt)% nano-Al 2 o 3 , nano-ZrO 2 The crystal grain size is 25-55nm and the dispersion is very high, nano-Al 2 o 3 The crystal grain size is 50-200nm and has a porous structure.

[0058] The enamel co...

Embodiment 2

[0060] A high-toughness enamel coating resistant to high-temperature hot water corrosion includes: a porcelain layer base material and abrasives,

[0061] The mass ratio of the porcelain base material is as follows:

[0062] SiO 2 52

[0063] ZrO 2 8

[0064] TiO 2 5

[0065] B 2 o 3 12

[0066] Li 2 O 2

[0067] Na 2 O 14

[0068] CaF 2 2

[0069] Na2 SiF 6 3

[0070] CoO 1

[0071] NiO 0.2

[0072] MnO 0.4;

[0073] The mass portion proportioning of described ground addition thing is as follows:

[0074] Glaze 100

[0075] Quartz sand 22

[0076] Nano Toughener 7

[0077] Magnesium carbonate 0.8

[0078] Borax pentahydrate 0.3

[0079] Sodium aluminate 0.5

[0080] Sodium nitrite 0.4,

[0081] Among them, the nano-toughener includes 80 (wt)% nano-ZrO 2 and 20(wt)% nano-Al 2 o 3 , nano-ZrO 2 The crystal grain size is 25-55nm and the dispersion is very high, nano-Al 2 o 3 The crystal grain size is 50-200nm and has a porous structure.

[0...

Embodiment 3

[0084] A high-toughness enamel coating resistant to high-temperature hot water corrosion includes: a porcelain layer base material and abrasives,

[0085] The mass ratio of the porcelain layer base material is as follows:

[0086] SiO 2 50

[0087] al 2 o 3 0.8

[0088] ZrO 2 3

[0089] TiO 2 4

[0090] B 2 o 3 10

[0091] Li 2 O 3

[0092] Na 2 O 16

[0093] CaF 2 4

[0094] Na 2 SiF 6 1

[0095] CoO 1.5

[0096] NiO 0.4

[0097] MnO 0.5;

[0098] The mass portion proportioning of described ground addition thing is as follows:

[0099] Glaze 100

[0100] Quartz sand 18

[0101] Nano Toughener 10

[0102] Magnesium Carbonate 1

[0103] Borax pentahydrate 0.5

[0104] Sodium aluminate 0.3

[0105] Sodium nitrite 0.4,

[0106] Among them, the nano-toughener includes 80 (wt)% nano-ZrO 2 and 20(wt)% nano-Al 2 o 3 , nano-ZrO 2 The crystal grain size is 25-55nm and the dispersion is very high, nano-Al 2 o 3 The crystal grain size is 50-200n...

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Abstract

The invention relates to a high-toughness enamel coating. The high-toughness enamel coating comprises an enamel coating base and a mill additive. The enamel coating base comprises, by mass, 50-52 parts of SiO2, 0-1.0 part of Al2O3, 3-8 parts of ZrO2, 2-5 parts of TiO2, 10-12 parts of B2O3, 2-3 parts of Li2O, 14-16 parts of Na2O, 2-4 parts of CaF2, 1-3 parts of Na2SiF6, 1-1.5 parts of CoO, 0.2-0.4 parts of NiO and 0.3-0.5 parts of MnO. The mill additive comprises, by mass, 100 parts of glaze, 15-25 parts of quartz sand, 5-10 parts of a nanometer flexibilizer, 0.5-1 part of magnesium carbonate, 0.3-0.5 parts of borax pentahydrate, 0.3-0.5 parts of sodium aluminate and 0.2-0.4 parts of sodium nitrite. The nanometer flexibilizer comprises 60-80wt% of nanometer ZrO2 and 20-40wt% of nanometer Al2O3. The high-toughness enamel coating substantially improves enamel coating toughness, improves heat shock resistance and water pressure sudden change resistance of the enamel inner container and can prevent impact-caused enamel cracks.

Description

technical field [0001] The invention relates to an enamel coating for a water heater inner tank, in particular to an enamel coating with relatively high toughness. Background technique [0002] The enamel water heater liner originated in the United States. The enamel liner is a liner with enamel coating sintered on the inner surface. The enamel liner can be used as an enamel water tank after foaming. It can be applied to solar water heaters, air energy water heaters and electric water heaters. . The enamel inner tank is replacing other inner tanks and becoming the main force of the water heater inner tank because of its superior performance in anti-corrosion, pressure-bearing durability, anti-absorption, and clean water. Years of research and practice have shown that in addition to acids and alkalis that can corrode the enamel surface, water also corrodes the enamel surface, and it increases with the increase of water purity, and the corrosion rate increases with the increa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/14
Inventor 余献忠
Owner JIANGYIN SILICON GENERAL ENAMEL
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