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A kind of interlayer liner and its preparation method and application

A liner and interlayer technology, applied in welding equipment, manufacturing tools, auxiliary welding equipment, etc., can solve problems such as complex interlayer structure, unfavorable production efficiency, and unsatisfactory oxide skin, and achieve strong operability and improve oxidation resistance. , enhance the thermal conductivity and the effect of solar energy utilization

Active Publication Date: 2022-06-14
QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment method is not ideal for inhibiting the generation of oxide scales, and sodium naphthalene has strong volatility, which will cause irreversible damage to the respiratory tract of the operator; Liquid immersion to remove the formed scale
Due to the complex interlayer structure, this method can only ensure that part of the scale is removed, and this method takes a long time and does not take advantage of the improvement of production efficiency

Method used

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  • A kind of interlayer liner and its preparation method and application
  • A kind of interlayer liner and its preparation method and application
  • A kind of interlayer liner and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The invention provides a preparation method of a sandwich liner, comprising the following steps:

[0038] 1) Use the borax aqueous solution to spray the cleaned outer steel sheet and the inner steel sheet respectively, and then dry;

[0039] 2) after the outer layer steel sheet and the inner layer steel sheet after drying are welded into an outer bladder and an inner bladder, respectively, the inner wall of the inner bladder is subjected to sintering treatment to obtain the interlayer inner bladder;

[0040] In the spray treatment, the spray volume of the borax aqueous solution per unit area of ​​the steel sheet is 45-55ml;

[0041] The mass concentration of the borax aqueous solution is 5-8%.

[0042] The outer-layer steel sheet and the inner-layer steel sheet used for making the interlayer liner in the present invention may be hot-rolled steel sheets SPHC, and the thickness of the inner-layer steel sheet is 1.8 mm, and the thickness of the outer-layer steel sheet is ...

Embodiment 1

[0077] The preparation method of the interlayer liner of the present embodiment comprises the following steps:

[0078] 1) Cleaning treatment

[0079] The surface of the outer layer steel sheet and the inner layer steel sheet is subjected to spray cleaning treatment with a cleaning agent, wherein the spray pressure of the cleaning agent is 0.52Mpa, the cleaning agent temperature is 58 ℃, and the cleaning time is 95s;

[0080] Wherein, the cleaning agent includes potassium hydroxide 5-8%, sodium carbonate 45-52%, sodium silicate 20-28%, sodium phosphate 0.5-1%, chelating agent 0.2-1%, and the remainder is water.

[0081] 2) Spray treatment of borax aqueous solution

[0082] The outer steel sheet and the inner steel sheet are sprayed with borax aqueous solution with a mass concentration of 6% and a temperature of 28 ° C. By controlling the spray flow and spray time, the steel sheet per unit area is Evenly treated by 50ml of borax aqueous solution;

[0083] 3) Drying treatment...

Embodiment 2

[0092] The preparation method of the interlayer liner of the present embodiment is basically the same as that of the embodiment 1. The difference is that in the spray treatment of the borax aqueous solution in step 2), the borax aqueous solution with a mass concentration of 6% and a temperature of 55° C. is used to treat the above-mentioned The outer steel sheet and the inner steel sheet are sprayed.

[0093] The interlayer liner of this embodiment was cut to observe whether there was oxide scale on the surface of the interlayer.

[0094] figure 2 For the effect diagram of the interlayer antioxidant capacity of the interlayer liner in Example 2, through figure 2 and figure 1 The comparison shows that there is almost no oxide scale in the interlayer liner of this embodiment, indicating that the appropriate temperature of the borax aqueous solution can more effectively inhibit the formation of the interlayer oxide scale during the enamelling process.

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Abstract

The invention provides a sandwich liner and its preparation method and application. The preparation method comprises the following steps: 1) using borax aqueous solution to spray the cleaned outer layer steel sheet and the inner layer steel sheet respectively, and then bake dry; 2) after welding the dried outer layer steel sheet and the inner layer steel sheet, the inner wall of the inner container formed by the inner layer steel sheet is subjected to firing treatment to obtain the interlayer inner container ; In the spray treatment, the spray volume of the borax aqueous solution per unit area of ​​the steel plate is 45-55ml; the mass concentration of the borax aqueous solution is 5-8%. The preparation method can effectively inhibit the formation of interlayer oxide scales during the firing process of the inner container, and is simple and easy to implement with low time cost.

Description

technical field [0001] The invention relates to a sandwich liner, a preparation method and application thereof, and belongs to the technical field of metal anti-oxidation treatment. Background technique [0002] A solar water heater is a device that converts solar energy into thermal energy, heating tap water from low temperature to high temperature to meet the needs of people's lives. [0003] At present, the solar water heater includes a water tank and a plurality of heat collecting tubes. The water tank includes an enamel inner tank and an outer tank surrounding the enamel inner tank. Heat transfer medium is added in the heat pipe and the interlayer to absorb heat. When the solar water heater is working, the heat collecting tube and the heat transfer medium in the interlayer absorb heat, and then transfer the heat to the cold water in the inner tank through the enamel inner tank wall, thus completing the heating of the cold water in the enamel inner tank. However, in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24S80/00B23K37/00C23D5/00
CPCF24S80/00B23K37/00C23D5/00Y02E10/40
Inventor 何羽闫苇尚山峰高朋理徐明明孙志伟刘中通闫敬涛张维杰张杰
Owner QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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