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Process for preparing novel corrosion-resistant and wear-resistant color steel pipe

A technology of anti-corrosion and wear-resisting and preparation technology, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of poor anti-corrosion and wear resistance, low surface finish and hardness, single color, etc., to achieve Good mechanical properties, high hardness, and simple preparation process

Active Publication Date: 2014-12-10
SHAANXI TIEMA FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problems of poor anti-corrosion and wear resistance, low surface finish and hardness, and single color existing in existing steel pipes.

Method used

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  • Process for preparing novel corrosion-resistant and wear-resistant color steel pipe
  • Process for preparing novel corrosion-resistant and wear-resistant color steel pipe
  • Process for preparing novel corrosion-resistant and wear-resistant color steel pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A new anti-corrosion and wear-resistant color steel pipe preparation process, the method and steps of making the color surface 4 of the steel pipe 3 into a silver-white steel pipe are:

[0029] 1. The inner surface of the steel pipe 3 is degreased, cleaned and dried; the outer surface is shot blasted and polished;

[0030] 2. Steel pipe 3 preheating treatment, preheating in a resistance furnace, the temperature is 350 ° C, and the time is 50 minutes;

[0031] 3. Soaking treatment of the steel pipe 3, the steel pipe 3 is heated evenly and kept warm in the intermediate frequency induction heating liquid ion nitriding furnace (model XIAN-TM-001), and the steel pipe is soaked at a temperature of 450°C for 30 minutes;

[0032] 4. Steel pipe 3 polishing treatment;

[0033] 5. Liquid ion nitriding treatment of steel pipe 3. Steel pipe 3 is heated in an intermediate frequency induction heating liquid ion nitriding furnace (model XIAN-TM-002) at a temperature of 650°C for 50 mi...

Embodiment 2

[0039] A new anti-corrosion and wear-resistant color steel pipe preparation process, the method and steps of making the steel pipe 3 into an antique color steel pipe are:

[0040] 1. The inner surface of the steel pipe 3 is degreased, cleaned and dried; the outer surface is shot blasted and polished.

[0041] 2. Preheating treatment of steel pipe 3: Preheat in a resistance furnace at a temperature of 350°C for 50 minutes.

[0042] 3. Soaking treatment of the steel pipe 3: The steel pipe 3 is uniformly heated and kept warm in a medium-frequency induction heating liquid ion nitriding furnace (model XIAN-TM-001), and the steel pipe 3 is soaked at a temperature of 470°C for 30 minutes.

[0043] Four, steel pipe 3 polishing treatment:

[0044] 5. Steel pipe 3 liquid ion nitriding treatment: the steel pipe is heated in an intermediate frequency induction heating liquid ion nitriding furnace (model XIAN-TM-002) at a temperature of 670°C for 50 minutes to form Fe 3 N, Fe 4 N, Fe 3...

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Abstract

The invention relates to a process for preparing a novel corrosion-resistant and wear-resistant color steel pipe and belongs to the technical field of surface modification and heat treatment of steel pipes. The process is mainly characterized in that the inner and outer surfaces of the steel pipe are subjected to oil removal and cleaning treatment, steel pipe preheating treatment, steel pipe secondary polishing treatment, steel pipe third polishing treatment and liquid ion nitriding and corrosion-resistant and wear-resistant heat treatment process and then subjected to liquid ion oxidizing and coloring and fine polishing treatment and a 10mu m-100mu m corrosion-resistant and wear-resistant layer is formed on each of the inner and outer surfaces of the steel pipe, wherein the corrosion-resistant and wear-resistant layer mainly and sequentially comprises a compound layer and a nitrogen-containing austenite layer, the steel pipe is A3, Q235 or other carbon steels and the original state of the steel pipe can be a seamless steel pipe and can also be a straight-seam welded steel pipe. The steel pipe produced by the process disclosed by the invention has the advantages of relatively high corrosion resistance and wear resistance and since the outer surface of the steel pipe can show different colors, such as silver, bronze, black, and navy blue, the steel pipe can replace Cr-containing and Ni-containing stainless steel color steel pipes.

Description

technical field [0001] The invention belongs to the technical field of steel pipe surface modification technology or steel pipe surface heat treatment technology, and in particular relates to a preparation process of a novel anti-corrosion and wear-resistant colored steel pipe. [0002] The anti-corrosion and wear-resistant colored steel pipe provided by the present invention has mechanical properties in line with relevant national standards. The surface of the steel pipe has high hardness and strong anti-corrosion and wear-resistant properties. The surface of the steel pipe can appear silvery white, bronze, orange, sea blue, Colors such as dark green, brown and gray. It can replace colored stainless steel pipes containing Cr and Ni, and can be widely used in technical fields such as architectural decoration, furniture, refrigerated storage and transportation, water transport terminals, drinking water transportation, and seawater purification. Background technique [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/38
Inventor 曹银萍吴少旭何养民何子蛟
Owner SHAANXI TIEMA FORGING
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