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A surface treatment method for sewage manhole cover

A technology for surface treatment and manhole cover, applied in the field of surface treatment of sewage manhole cover, can solve the problems of affecting appearance, easy to corrode and rust, etc., and achieve the effect of saving treatment cost, avoiding corrosion and simple method.

Active Publication Date: 2018-09-04
FUNAN COUNTY FENJIN MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Sewage manhole cover is the cover on the ground that covers the mouth of the sewage pipe leading to the ground. It is usually made of reinforced cement, metal or reinforced plastic. At present, the proportion of metal manhole cover is still the largest, because the material of metal manhole cover is mostly Cast iron has high strength and hardness, is not easy to break, and has a long service life, but the metal manhole cover is often exposed to sewage, rainwater, etc., which is easy to corrode and rust, which affects the appearance, and is often rubbed on the road, so sewage manhole covers are needed Has strong corrosion resistance and wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A surface treatment method for a sewage manhole cover, comprising the following steps:

[0018] (1) Grinding: Freeze the manhole cover produced by casting for 18 hours, reduce the difficulty of grinding and the high temperature generated by grinding, maintain the metallic luster of the manhole cover, and improve the grinding efficiency. Grind it with a 400# abrasive belt, and then clean it with distilled water. Grinding parts;

[0019] (2) Cleaning: Put the polished parts in the cleaning solution and ultrasonically wash them at 50°C and 33kHz for 25 minutes. The cleaning solution contains a variety of ingredients, which can remove debris on the surface of the manhole cover and facilitate subsequent processing. Rinse with distilled water to obtain the cleaned parts ;

[0020] (3) Quenching: Heat the cleaned parts to a temperature of 420°C at a heating rate of 2.4°C / min, keep warm for 2 hours, and place them directly in a urea solution with a mass concentration of 1.3% t...

Embodiment 2

[0026] A surface treatment method for a sewage manhole cover, comprising the following steps:

[0027] (1) Grinding: Freeze the manhole cover produced by casting for 19 hours, reduce the difficulty of grinding and the high temperature generated by grinding, maintain the metallic luster of the manhole cover, and improve the grinding efficiency. Grind it with a 400# abrasive belt, and then clean it with distilled water. Grinding parts;

[0028] (2) Cleaning: Put the polished parts in the cleaning solution and ultrasonically wash them at 55°C and 34kHz for 28 minutes. The cleaning solution contains a variety of ingredients, which can remove debris on the surface of the manhole cover and facilitate subsequent processing. Rinse with distilled water to obtain the cleaned parts ;

[0029] (3) Quenching: Heat the cleaned parts to a temperature of 450°C at a heating rate of 2.5°C / min, keep warm for 2.5 hours, and place them directly in a urea solution with a mass concentration of 1.4%...

Embodiment 3

[0035] A surface treatment method for a sewage manhole cover, comprising the following steps:

[0036] (1) Grinding: Freeze the manhole cover produced by casting for 20 hours to reduce the difficulty of grinding and the high temperature generated by grinding, maintain the metallic luster of the manhole cover, and improve the grinding efficiency. Grind it with a 500# abrasive belt and then clean it with distilled water. Grinding parts;

[0037] (2) Cleaning: Put the polished parts in the cleaning solution and ultrasonically wash them at 60°C and 35kHz for 30 minutes. The cleaning solution contains a variety of ingredients, which can remove debris on the surface of the manhole cover and facilitate subsequent processing. Rinse with distilled water to obtain the cleaned parts ;

[0038] (3) Quenching: Heat the cleaned parts to a temperature of 460°C with a heating rate of 2.6°C / min, keep warm for 3 hours, and place them directly in a urea solution with a mass concentration of 1.5...

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Abstract

The invention mainly relates to the technical field of machining and discloses a surface treatment method for a sewage inspection well cover. The surface treatment method for the sewage inspection well cover comprises the steps of polishing, cleaning, quenching and covering with a film. The method is simple and convenient to operate. The inspection well cover is polished after being frozen, so that polishing difficulty and high temperature generated by polishing are lowered, the metal luster of the inspection well cover is maintained and the polishing efficiency is improved; the inspection well cover is heated rapidly after cleaning and then put into a urea solution to perform quenching cooling and a protective film is formed on the surface, so that the corrosion of the inspection well cover is avoided, and the combining capacity of the inspection well cover and the film is improved; the inspection well cover is heated to the original temperature after quenching, so the combining capability of the coating film is improved; the inspection well cover is spray-coated with coating, the coating raw material is rich, safe, non-toxic and strong in adhesion force, so the wear resistance of the film is improved, the antibacterial property, the stability and the wear resistance of the film are enhanced, and the service life of the inspection well cover is prolonged by 23 to 25 percent.

Description

technical field [0001] The invention mainly relates to the technical field of mechanical processing, in particular to a surface treatment method for a sewage manhole cover. Background technique [0002] Sewage manhole cover is the cover on the ground that covers the mouth of the sewage pipe leading to the ground. It is usually made of reinforced cement, metal or reinforced plastic. At present, the proportion of metal manhole cover is still the largest, because the material of metal manhole cover is mostly Cast iron has high strength and hardness, is not easy to break, and has a long service life, but the metal manhole cover is often exposed to sewage, rainwater, etc., which is easy to corrode and rust, which affects the appearance, and is often rubbed on the road, so sewage manhole covers are needed Has strong corrosion resistance and wear resistance. Contents of the invention [0003] In order to make up for the defects of the prior art, the object of the present inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D145/00C09D5/14C09D7/61C09D7/63B05D3/00B05D1/02B05D3/02
CPCB05D1/02B05D3/002B05D3/0254B05D2350/30C08K2003/324C08L2205/02C08L2205/035C09D5/14C09D145/00C08L61/28C08L93/04C08L93/00C08K13/02C08K3/32C08K3/04C08K5/47C08K5/05
Inventor 张益涛
Owner FUNAN COUNTY FENJIN MACHINERY MFG
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