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Composite metal pipe with internal glass coating and preparation process of composite metal pipe

A composite metal pipe and inner coating technology, which is applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of easy cracks and seepage, attenuation of pipeline transportation capacity, non-wear-resistant resin lining, etc., to achieve wear-resistant Excellent resistance and aging resistance, low resistance, and the effect of solving non-wearing

Inactive Publication Date: 2018-05-11
王双喜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resin lining is not wear-resistant and easy to age; the ceramic lining is wear-resistant but prone to cracks and erosion; the preparation process of the fusion-cast centrifugal glass-lined composite pipe is expensive; and the inner surface of the gelled inner coated steel pipe is easy to breed marine organisms, Severely attenuate the conveying capacity of the pipeline

Method used

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  • Composite metal pipe with internal glass coating and preparation process of composite metal pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh glass powder raw materials according to the following volume percentage: ZnO30%, B 2 o 3 25%, P 2 o 5 15%, Bi 2 o 3 10%, Al 2 o 3 10%, Fe 2 o 3 10%; mix the raw materials according to the ordinary glass powder preparation process→melt→ball mill→sieve to prepare glass powder; weigh glass slurry raw materials according to the number of parts by mass: 80 parts of the above-mentioned glass powder, with a median particle size of 1.5 μm 10 parts of copper powder, 10 parts of stainless steel powder with a median particle size of 1.5 μm; the raw materials were added into the adhesive according to the glass slurry preparation process, and then mixed and ball-milled to prepare a coating slurry with good suspension; The centrifuge of the drying device, under the action of centrifugal force, coats the slurry on the inner surface of the stainless steel pipe and dries and solidifies it at 90°C to form a layer of green body with a thickness of 0.2mm on the inner surface ...

Embodiment 2

[0024] Weigh glass powder raw materials according to the following volume percentage: ZnO40%, B 2 o 3 15%, P 2 o 5 10%, Bi 2 o 3 15%, Al 2 o 3 15%, Fe 2 o 3 5%; the raw materials are mixed according to the ordinary glass powder preparation process → melting → ball milling → sieving to prepare glass powder; take glass slurry raw materials by mass parts: 75 parts of the above-mentioned glass powder, copper with a median particle size of 1 μm 25 parts of powder; the raw materials are added into the adhesive according to the glass slurry preparation process, mixed and ball milled, and prepared into a coating slurry with good suspension; then, using a centrifuge with a drying device, under the action of centrifugal force, the The slurry is coated on the inner surface of the white copper tube and dried and solidified at 100°C to form a layer of 0.5mm thick green body on the inner surface of the white copper tube; then the white copper tube with the green layer is dried in a ...

Embodiment 3

[0026] Weigh glass powder raw materials according to the following volume percentage: ZnO50%, B 2 o 3 10%, P 2 o 5 10%, Bi 2 o 3 10%, Al 2 o 3 10%, Fe 2 o 3 9%, 1%TiO 2 The raw materials are mixed according to the ordinary glass powder preparation process → melting → ball milling → sieving to prepare glass powder; take glass slurry raw materials by mass parts: 80 parts of the above-mentioned glass powder, stainless steel powder with a median particle size of 0.8 μm 20 parts; the raw materials are added into the adhesive according to the glass slurry preparation process, mixed and ball-milled, and prepared into a coating slurry with good suspension; then, the slurry is mixed under the action of centrifugal force by using a centrifuge with a drying device. The material is coated on the inner surface of the stainless steel pipe and dried and solidified at 110°C to form a layer of 0.8mm thick green body on the inner surface of the stainless steel pipe; then the stainless ...

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Abstract

The invention provides a composite metal pipe with an internal glass coating and a preparation process of the composite metal pipe. The inner surface of a base body of the metal pipe is coated with glass slurry, and the uniform and smooth glass protection coating is formed after sintering. The glass slurry is the mixture of one or more of glass powder and metal powder. The preparation process comprises the steps that (1) glass slurry raw materials are weighed, adhesives are added into the glass slurry raw materials, and then mixing and ball milling are conducted to prepare coating slurry witha good suspension property; (2) the coating slurry is smeared on the inner surface of the metal pipe through a centrifugal machine with a drying device and then is dried and cured, so that a uniform green body with a certain thickness is formed; and (3) the metal pipe with the green body is dried in a kiln and sintered at a low temperature, so that the composite metal pipe with the internal glasscoating is obtained. According to the composite metal pipe with the internal glass coating, the glass coating contains a certain amount of metal powder so that the expansion coefficient of the coatingcan be regulated, the coating and the base body are bonded tightly, the corrosion resistance, the abrasion resistance and the aging resistance are excellent, and accordingly, the service life of themetal pipe is prolonged.

Description

technical field [0001] The invention belongs to the field of composite pipeline preparation. Specifically, it is a glass inner-coated composite metal pipe and a preparation process thereof. Background technique [0002] With the wide application of pipelines in various fields, sudden vicious accidents caused by corrosion damage often cause huge economic losses and serious social consequences. Corrosion of pipelines alone causes huge economic losses every year in countries all over the world, about 2 billion US dollars in the United States, 1.7 billion US dollars in the United Kingdom, and 3.3 billion US dollars in Germany and Japan. [0003] Composite pipeline is the most effective, most economical, most widely used and most easily recognized by engineering designers among the current anti-corrosion measures. There are mainly cemented inner coatings, resin linings, ceramic-lined stainless steel pipes and glass-lined composite pipes. However, the resin lining is not wear-r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14C03C8/08C03C8/20C03C8/18C23D5/04
CPCC03C8/08C03C8/18C03C8/20C23D5/04F16L9/14
Inventor 王双喜黄永俊蓝海凤张伟
Owner 王双喜
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