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A kind of environment-friendly ceramic coating ductile iron pipe and its manufacturing method

A technology of ductile iron pipe and ceramic coating, applied in the direction of coating, pipe, rigid pipe, etc., can solve the problems of single function of ductile iron pipe, poor adhesion of cement coating, no impact resistance of enamel coating, etc. Simple, strong coating adhesion, good thermal insulation effect

Active Publication Date: 2019-04-19
HUNAN ZHENHUI PIPE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing ductile iron pipes have a single function. When they are mainly used to transport drinking water, their safe passage capacity becomes a priority solution for people to seek, such as brushing the inner wall surface of the pipe with cement, enamel, epoxy resin coating, etc.
The cement coating has poor adhesion, is easy to crack, is not impact-resistant, and the water quality is easily polluted; the enamel coating is also not impact-resistant, and the coating process is complicated, requiring sintering at a high temperature above 800°C; and the epoxy resin coating is used. Defects such as higher cost

Method used

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  • A kind of environment-friendly ceramic coating ductile iron pipe and its manufacturing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] The distribution ratio of components is calculated by parts by weight

[0099] A, the preparation operation steps of coating 2 batch materials are as follows:

[0100] Ⅰ. Production of mixed powder / parts by weight

[0101] ⑴ Take aluminum oxide (20%) / 30.0 parts, manganese dioxide (11%) / 16.5 parts, copper oxide (8%) / 12.0 parts, iron oxide (61%) / 91.5 parts, and mix them in a mixer to form mix, spare;

[0102] ⑵. The above spare mixture is placed in a sintering furnace, reacted and sintered at a high temperature of 1250°C for 1.0h, cooled, and set aside;

[0103] (3) Put the sintered spare parts in the grinding equipment, crush and finely grind them into a mixed powder with a particle size of 300 mesh;

[0104] ⑷, the mixed powder is dried in the drying equipment, and the powder is set aside;

[0105] Ⅱ. Stirring and grinding of glue

[0106] ⑸. Take silica sol (87﹪) / 130.5 parts in the mixer and stir fully;

[0107] ⑹. Slowly add monoethanolamine (3%) / 4.5 parts into ...

Embodiment 2

[0134] A, the preparation operation steps of coating 2 batch materials are as follows:

[0135] Ⅰ. Production of mixed powder / parts by weight

[0136] (1) Take alumina (28%) / 140.0 parts, manganese dioxide (8%) / 40.0 parts, copper oxide (6%) / 30.0 parts, iron oxide (58%) / 290.0 parts, and mix them in a mixer to form mix, spare;

[0137] ⑵. The above-mentioned spare mixture is placed in a sintering furnace, reacted and sintered at a high temperature of 1280°C for 1.3 hours, cooled, and set aside;

[0138] (3) Put the sintered spare parts in the grinding equipment, crush and finely grind them into a mixed powder with a particle size of 280 mesh;

[0139] ⑷, the mixed powder is dried in the drying equipment, and the powder is set aside;

[0140] Ⅱ. Stirring and grinding of glue

[0141] ⑸. Take silica sol (78﹪) / 390.0 parts in the mixer and stir fully;

[0142] ⑹. Slowly add monoethanolamine (6%) / 30.0 parts into the above mixer, and stir at high speed for 35 minutes;

[0143] ⑺....

Embodiment 3

[0169]A, the preparation operation steps of coating 2 batch materials are as follows:

[0170] Ⅰ. Production of mixed powder / parts by weight

[0171] (1) Take alumina (10%) / 80.0 parts, manganese dioxide (15%) / 120.0 parts, copper oxide (10%) / 80.0 parts, iron oxide (65%) / 520.0 parts, and mix them in a mixer to form mix, spare;

[0172] ⑵. The above-mentioned spare mixture is placed in a sintering furnace, reacted and sintered at a high temperature of 1300 °C for 1.5 hours, cooled, and set aside;

[0173] (3) Put the sintered spare parts in the grinding equipment, crush and finely grind them into a mixed powder with a particle size of 310 mesh;

[0174] ⑷, the mixed powder is dried in the drying equipment, and the powder is set aside;

[0175] Ⅱ. Stirring and grinding of glue

[0176] ⑸. Take silica sol (95﹪) / 760.0 parts in the mixer and stir fully;

[0177] ⑹. Slowly add monoethanolamine (1%) / 8.0 parts into the above mixer, and stir at high speed for 40 minutes;

[0178] ⑺...

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Abstract

The invention relates to an environmentally-friendly ceramic coating nodular cast iron pipe and a manufacturing method thereof. The environmentally-friendly ceramic coating nodular cast iron pipe comprises a pipe body and a ceramic coating attached to the inner wall of the pipe body. The pipe body is composed of a head part, a main body and a tail part. A ceramic coating batch is composed of mixed powder and glue. According to the technical scheme, the operation steps of pipe body treatment, paint covering, and product inspection and warehousing are adopted. The defects that existing nodular cast iron pipes are simplex in function, coatings on inner walls are poor in adhesion force, prone to cracking and not resisting to impact, water is prone to pollution, processes are complicated and overloaded and cost is high are overcome. The manufacturing method is suitable for manufacturing various metal pipes, cast iron pipes, faucets and surface layers thereof, particularly suitable for manufacturing the nodular cast iron pipe.

Description

technical field [0001] The invention relates to an environment-friendly ceramic coated ductile iron pipe and a manufacturing method thereof. Background technique [0002] Existing ductile iron pipes have a single function, and when they are mainly used for transporting drinking water, their safe passage capacity has become a priority solution for people to seek, such as using cement, enamel, epoxy resin coating, etc. on the inner wall surface of the pipe. The cement coating has poor adhesion, is easy to crack, is not impact-resistant, and the water quality is easily polluted; the enamel coating is also not impact-resistant, and the coating process is complicated, requiring sintering at a high temperature above 800°C; and the epoxy resin coating is used. Defects such as higher cost. Contents of the invention [0003] In view of the above situation, the object of the present invention is to provide a multifunctional ductile iron pipe with corrosion resistance, wear resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/14C09D1/00C09D7/61
Inventor 肖和飞张谭伟
Owner HUNAN ZHENHUI PIPE IND