Steel pipe alramenting technology

A technology of surface phosphating and steel pipe, applied in the direction of metal material coating process, etc., can solve the problems of high risk and working environment pollution, and achieve the effect of reducing environmental pollution, low risk and easy operation.

Inactive Publication Date: 2014-04-16
CHANGSHU DONGXIN STEEL PIPE
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phosphating solution used in traditional zinc-based phosphating is made of ZnO, HNO3 and H3PO4. HNO3

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A steel pipe surface phosphating process, the loading density of the steel pipe in the phosphating process is 0.040 square meters per liter, and the phosphating solution consists of 100g / L zinc oxide, 110g / L zinc nitrate and 80g / L Composed of orthophosphoric acid, the total acidity of the phosphating solution is 20 points, the free acidity of the phosphating solution is 5 points, the phosphating temperature is 80°C, and the treatment time is 30 minutes.

Embodiment 2

[0011] A steel pipe surface phosphating process, the loading density of the steel pipe in the phosphating process is 0.060 square meters per liter, and the phosphating solution consists of 110g / L zinc oxide, 120g / L zinc nitrate and 90g / L Composed of orthophosphoric acid, the total acidity of the phosphating solution is 21 points, the free acidity of the phosphating solution is 6 points, the phosphating temperature is 85°C, and the treatment time is 35 minutes.

Embodiment 3

[0013] A steel pipe surface phosphating process, the loading density of the steel pipe in the phosphating process is 0.050 square meters per liter, and the phosphating solution consists of 108g / L zinc oxide, 113g / L zinc nitrate and 86g / L Composed of orthophosphoric acid, the total acidity of the phosphating solution is 20.5 points, the free acidity of the phosphating solution is 5.5 points, the phosphating temperature is 83°C, and the treatment time is 34 minutes.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a steel pipe alramenting technology. In the phosphating process, the loading density of a steel pipe is 0.040-0.060 m<2>/L; a phosphating solution comprises zinc white of 100-100 g/L, zinc nitrate of 110-120 g/L and orthophosphoric acid of 80-90 g/L; the total acidity of the phosphating solution is 20-21 points, the free acidity of the phosphating solution is 5-6 points, the phosphating temperature is 80-85 DEG C, and the processing time is 30-35 minutes. Through the adoption of the steel pipe alramenting technology, the environmental pollution is reduced, the risk is low, and the operation is easy.

Description

technical field [0001] The invention relates to a steel pipe surface phosphating process. Background technique [0002] The phosphating solution used in the phosphating process is divided into zinc-based, zinc-calcium-based, zinc-manganese-based, manganese-based, etc. The phosphating film is used for anti-friction lubrication in the metal cold processing process. The phosphating solution used in traditional zinc-based phosphating is made of ZnO, HNO3 and H3PO4. HNO3 and HNO3 are high-risk chemical products with strong risks and great pollution to the working environment. Contents of the invention [0003] The purpose of the present invention is to provide a steel pipe surface phosphating process, which reduces environmental pollution, has low risk and is easy to operate. [0004] In order to achieve the above object, the technical solution of the present invention is to design a steel pipe surface phosphating process, the loading density of the steel pipe in the process o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C23C22/07
Inventor 须晓东
Owner CHANGSHU DONGXIN STEEL PIPE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap