Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A low-temperature phosphating process for iron and steel

A low-temperature phosphating, iron and steel technology, applied in the direction of metal material coating process, etc., can solve the problems of coarse phosphating film crystal, complicated operation steps, long phosphating time, etc., achieve dense and uniform film crystallization, and simplify the phosphating process steps. , the effect of increasing the number of nuclei

Active Publication Date: 2019-11-05
FUJIAN ANSHUN TRANSFORMER
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this phosphating process has cumbersome operation steps, high energy consumption, long phosphating time, thicker film formed by phosphating, and coarser crystallization of the phosphating film.

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

[0029] A kind of preparation of surface adjustment fluid: it comprises the following steps:

[0030] (1) Preparation of surface modifier: In parts by weight, 220 parts of deionized water weighed were heated to 70°C. Then, while stirring, 70 parts of disodium hydrogen phosphate, 50 parts of sodium tripolyphosphate and 4 parts of sodium hydroxide were sequentially added to the heated deionization, and then the temperature was raised to about 100°C, and then 6 parts of potassium fluorotitanate and 20 parts of amino trimethylene phosphonic acid, stirred for 25 minutes, then added 4 parts of sodium pyrophosphate, stirred for another 12 minutes to form a uniform mixture and then cooled.

[0031] (2) Take 0.2 kg of the surface regulator prepared in step (1), add it into 50 L of water and stir evenly, and then add an appropriate amount of water to set the volume to 100 L to obtain the surface regulator.

Embodiment 2

[0033] A kind of preparation of surface adjustment fluid: it comprises the following steps:

[0034] (1) Preparation of surface modifier: In parts by weight, 250 parts of deionized water weighed were heated to 65°C. Then, while stirring, 60 parts of disodium hydrogen phosphate, 40 parts of sodium tripolyphosphate and 2 parts of sodium hydroxide were sequentially added to the heated deionization, and then the temperature was raised to about 100°C, and then 5 parts of potassium fluorotitanate and 10 parts of amino trimethylene phosphonic acid, stirred for 20 minutes, then added 2 parts of sodium pyrophosphate, stirred for another 10 minutes to form a uniform mixture and then cooled.

[0035] (2) Take 0.3 kg of the surface regulator prepared in step (1), add it into 50 L of water and stir evenly, and then add an appropriate amount of water to set the volume to 100 L to obtain the surface regulator.

Embodiment 3

[0037] A kind of preparation of surface adjustment fluid: it comprises the following steps:

[0038] (1) Preparation of surface modifier: In parts by weight, 200 parts of deionized water weighed were heated to 68°C. Then, while stirring, 80 parts of disodium hydrogen phosphate, 60 parts of sodium tripolyphosphate and 5 parts of sodium hydroxide were sequentially added to the heated deionization, and then the temperature was raised to about 100°C, and then 8 parts of potassium fluorotitanate and 25 parts of amino trimethylene phosphonic acid, stirred for 30 minutes, then added 5 parts of sodium pyrophosphate, and stirred for another 15 minutes to form a uniform mixture and then cooled.

[0039] (2) Take 0.08 kg of the surface regulator prepared in step (1), add it into 50 L of water and stir evenly, and then add an appropriate amount of water to set the volume to 100 L to obtain the surface regulator.

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 relates to a steel low-temperature phosphorization process. The steel low-temperature phosphorization process comprises the following process steps of (1) acid pickling, (2) water washing, (3) neutralizing, (4) surface conditioning and (5) phosphorization, wherein phosphorization liquid used for phosphorization comprises, by weight percentage, 12-25 parts of phosphoric acid, 1-5 parts of zinc dihydrogen phosphate, 0.5-1 part of crylic acid, 0.1-0.5 part of di-o-tolyl-thiourea, 0.5-0.8 part of tetrahydroglyoxaline, 0.1-0.5 part of ethylnitrobenzene, 0.1-0.8 part of methyl formate, 60-80 parts of chloroform, 5-10 parts of n-butyl alcohol, 10-15 parts of methyl alcohol, 5-10 parts of water and 3-5 parts of dimethylformamide. The phosphorization liquid used in the low-temperature phosphorization process can achieve the phosphorization and grease removal effect at the same time, the traditional grease removal process is omitted from the overall process, and the phosphorization process step is greatly simplified.

Description

technical field [0001] The invention relates to a low-temperature phosphating process for iron and steel. Background technique [0002] Iron and steel phosphating is the process of putting the pretreated steel into the phosphating solution to deposit a water-insoluble crystalline phosphate conversion film on the surface of the steel. In order to achieve a better phosphating effect, the traditional phosphating process mostly adopts high temperature phosphating treatment. However, this phosphating process has cumbersome operation steps, high energy consumption, long phosphating time, thicker film formed by phosphating, and coarse crystallization of the phosphating film. Contents of the invention [0003] The object of the present invention is to provide a low-temperature phosphating process for iron and steel with simple operation, low energy consumption and short phosphating time. [0004] The object of the present invention is achieved through the following technical sol...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/17C23C22/73C23C22/80C23G1/08
CPCC23C22/17C23C22/73C23C22/80C23G1/083
Inventor 何煜青游上云雷福荣徐斌何俊杰
Owner FUJIAN ANSHUN TRANSFORMER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com