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Galvanized dip coating malleable cast iron pipe fitting and preparation method thereof

A technology of galvanized malleable steel pipe and malleable steel pipe, which is applied in the field of pipeline connectors and its preparation, can solve the problem that galvanized malleable steel pipe fittings cannot withstand acidic and alkaline environment corrosion, and the antirust effect of galvanized malleable steel pipe fittings is not very good. Protective paint material consumption and other issues, to achieve the effect of broadening the scope of use and environmental adaptability, good acid and alkali resistance protection performance, and increasing market share

Active Publication Date: 2015-12-16
JINAN MEIDE CASTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the surface treatment of malleable steel pipe fittings mostly adopts galvanizing technology, but galvanized malleable steel pipe fittings cannot withstand corrosion in acidic and alkaline environments. , affecting the aesthetics of the construction, it is necessary to spray protective paint on the entire pipeline connected by galvanized malleable steel pipe fittings to unify the pipeline color, increase the consumption of protective paint materials, and the antirust effect of galvanized malleable steel pipe fittings is not very good

Method used

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  • Galvanized dip coating malleable cast iron pipe fitting and preparation method thereof
  • Galvanized dip coating malleable cast iron pipe fitting and preparation method thereof

Examples

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Embodiment 1

[0022] like figure 1 As shown, a galvanized and dipped malleable steel pipe fitting, comprising a malleable steel pipe fitting base 1, is characterized in that: the surface of the malleable steel pipe fitting base 1 has a galvanized layer 2 and a paint dipped layer 3 in sequence, and the galvanized layer 2 is an inner layer , the varnish layer 3 is the outer layer; the thickness of the galvanized layer 2 is 50 μm; the thickness of the varnish layer 3 is 40 um, the adhesion ≤ grade 1, and the impact ≥ 70 kg.cm.

[0023] A preparation method for galvanized and dipped malleable steel pipe fittings is characterized in that it comprises the following steps:

[0024] A. Steps of shot blasting of malleable steel pipe fitting substrate 1: the shot blasting time of malleable steel pipe fitting substrate 1 is 30 minutes, so that the surface of malleable steel pipe fitting substrate 1 meets the national standard, that is, the ASa3 grade in the corrosion grade and derusting grade of the s...

Embodiment 2

[0035] like figure 1 As shown, a galvanized and dipped malleable steel pipe fitting, comprising a malleable steel pipe fitting base 1, is characterized in that: the surface of the malleable steel pipe fitting base 1 has a galvanized layer 2 and a paint dipped layer 3 in sequence, and the galvanized layer 2 is an inner layer , the varnish layer 3 is the outer layer; the galvanized layer 2 has a thickness of 80 μm; the varnish layer 3 has a thickness of 70 um, adhesion ≤ grade 1, and impact ≥ 70 kg.cm.

[0036] A preparation method for galvanized and dipped malleable steel pipe fittings is characterized in that it comprises the following steps:

[0037] A. Steps of shot blasting of malleable steel pipe fitting substrate 1: the shot blasting time of malleable steel pipe fitting substrate 1 is 40 minutes, so that the surface of malleable steel pipe fitting substrate 1 meets the national standard, that is, the ASa3 grade in the corrosion grade and derusting grade of the steel surfa...

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Abstract

The invention discloses a galvanized dip coating malleable cast iron pipe fitting and a preparation method thereof. The galvanized dip coating malleable cast iron pipe fitting comprises a malleable cast iron pipe fitting base body, wherein a zinc coating and a dip coating layer are arranged on the surface of the malleable cast iron pipe fitting base body in sequence; the zinc coating serves as an inner layer, and is 50 to 80 microns thick; the dip coating layer serves as an outer layer, and is 40 to 70 microns thick, equal to or lower than 1 level in adhesive force, and equal to or higher than 70 kg.cm in impact. As the galvanized dip coating malleable cast iron pipe fitting is subjected to dip coating of epoxy resin, not only is the problem that the conventional galvanized malleable cast iron pipe fitting cannot bear corrosion of acid environments and alkaline environments solved, but also the problem that the surface color of the conventional galvanized malleable cast iron pipe fitting is not matched with those of other pipelines used with the galvanized malleable cast iron pipe fitting and connectors of the galvanized malleable cast iron pipe fitting is solved; moreover, the rustproof effect of the galvanized dip coating malleable cast iron pipe fitting is improved.

Description

technical field [0001] The invention belongs to a pipeline connector and a preparation method thereof, in particular to a galvanized and dipped malleable steel pipe fitting and a preparation method thereof. Background technique [0002] At present, the surface treatment of malleable steel pipe fittings mostly adopts galvanizing technology, but galvanized malleable steel pipe fittings cannot withstand corrosion in acidic and alkaline environments. , affect the beauty of the construction, it is necessary to spray protective paint on the entire pipeline connected by galvanized malleable steel pipe fittings to unify the color of the pipeline, increase the consumption of protective paint materials, and the antirust effect of galvanized malleable steel pipe fittings is not very good. Therefore, how to overcome the defect that galvanized malleable steel pipe fittings cannot withstand corrosion in acidic and alkaline environments, realize that the surface color of galvanized malleab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/06C23C2/38C23C2/26
Inventor 任艳青彭建华姜永
Owner JINAN MEIDE CASTING CO LTD
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