Unlock instant, AI-driven research and patent intelligence for your innovation.

Process for chemically converting phosphate into film by using chemical and electrochemical reaction

A technology of electrochemical reaction and phosphate chemistry, applied in the field of phosphating process, can solve problems such as easy formation of bottlenecks, many customer complaints, lack of paint primer, etc. short cycle effect

Inactive Publication Date: 2011-10-12
JIANGXI CHANGYUAN MACHINERY MFG
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The original phosphating process is simple (pickling → water washing → phosphating → passivation), which only plays the role of rust removal on the product, but does not play the role of priming the baking paint, making the baking paint easy to fall off; the original phosphating production required The time is very long, the production process is easy to form a bottleneck, and the efficiency is very low, the smell is unpleasant, and it has a great impact on environmental pollution and human health; in the past, the surface of the phosphating product appeared after 3-4 hours Rust, the phosphating product has no phosphating layer, which cannot increase the adhesion of the baking paint, resulting in easy peeling of the baking paint, and more complaints from customers, which has caused great economic losses to the company

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

[0007] (1) Pickling: hoist the base metal into the pickling pool with a crane, the ratio of hydrochloric acid solution is hydrochloric acid 6: water 4, and the time is 10 minutes; (2) Water washing: PH of the pool is 6.0, keep overflowing, and replace it every week Once; the time is: 1 Use a water gun to spray and soak in a pool to clean off the acidic cleaning agent on the product. (3) Degreasing: Degreasing tank ingredient ratio: 5%, electric heating tube heating, temperature 70°C, time: 5 minutes; during the production process, if the concentration of the tank solution drops, add degreasing powder in time, and the oil in the tank must be salvaged once per shift ; (4) Re-washing: pool PH: 6.0-7.0, keep overflowing, replace once a week; (5) Surface adjustment: surface adjustment ratio of glue peptide: 0.2%, PH: 7.0, room temperature, 30 seconds; visual tank The yellowing of the liquid surface needs to be replaced regularly, once every 5-10 days, and the pH value must be guara...

Embodiment 2

[0009] (1) Pickling: hoist the base metal into the pickling pool with a crane, the ratio of hydrochloric acid solution is hydrochloric acid 6: water 4, and the time is 30 minutes; (2) Water washing: PH of the pool is 7.0, keep overflowing, and replace it every week Once; time: 2 minutes; use water gun spray and pool soaking to clean off the acidic cleaning agent on the product. (3) Degreasing: Degreasing tank ingredient ratio: 8%, electric heating tube heating, process requirement temperature is 90°C, time: 10 minutes; during the production process, if the concentration of the tank solution drops, add degreasing powder in time, and the oil in the tank must be added every shift Salvage once; (4) Re-washing: the pH of the pool is 7.0, keep it overflowing, and replace it once a week; the surfactant and alkali on the product will be cleaned off by soaking in the pool. (5) Surface adjustment: Gel peptide surface adjustment ratio: 0.2%, PH: 10.0, room temperature, 60 seconds; the su...

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 process for chemically converting phosphate into a film by using chemical and electrochemical reaction. The process comprises the steps of acid washing, washing, degreasing, rewashing, surface conditioning, phosphating and closing. The process relates to the field of pretreatment before phosphating, particularly degreasing and surface conditioning; water-soluble saponified substances are formed by the saponifying reaction of alkali and vegetable oil, so that the purpose of removing grease is fulfilled; by the surface conditioning, the formation of the phosphated film with fine and compact grains is promoted, and the phosphating speed is improved; by closing, the phosphating adhesive force is improved, and a good foundation is laid for baking varnish; and the process has the advantages of low energy consumption, high efficiency, safety in operation, environment friendliness and the like, and is particularly suitable for producing large-batch baking varnish products.

Description

technical field [0001] The invention of the process belongs to the field of phosphating technology and relates to pretreatment before phosphating; in the pretreatment process, methods such as removing grease and rust and improving adhesion are used to improve the quality of phosphating and enhance the adhesion of baking paint. Background technique [0002] The original phosphating process is simple (pickling → water washing → phosphating → passivation), which only plays the role of rust removal on the product, but does not play the role of priming the baking paint, making the baking paint easy to fall off; the original phosphating production required The time is very long, the production process is easy to form a bottleneck, and the efficiency is very low, the smell is unpleasant, and it has a great impact on environmental pollution and human health; in the past, the surface of the phosphating product appeared after 3-4 hours Rust, phosphating products do not have a phosphat...

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 Applications(China)
IPC IPC(8): C23C22/73C23C22/07C25D11/36
Inventor 尧永辉
Owner JIANGXI CHANGYUAN MACHINERY MFG