Environment-friendly neutral rust remover and preparation method thereof

A rust remover, neutral technology, applied in the field of environmentally friendly neutral rust remover, can solve the problems of acid mist, corrosion, hydrogen embrittlement, waste liquid pollution, etc., to improve the rust removal effect, speed up the reaction speed, strengthen the Penetration effect

Pending Publication Date: 2022-06-07
潍坊佳钢贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of corrosion inhibitors and surfactants still does not solve the problems of acid mist, corrosion, hydrogen embrittlement, and waste liquid pollution

Method used

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  • Environment-friendly neutral rust remover and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] An environmentally friendly neutral rust remover, comprising the following raw material components in parts by weight: 5 parts of organic acid complexing agent citric acid, 15 parts of hydroxyethylidene diphosphonic acid (HEDP), 0.25 parts of accelerator zinc acetate, chelating agent 1.0 part of EDTA-2Na, 0.5 part of sodium gluconate, 0.5 part of surfactant PEG-400, 1 part of SDBS, 0.75 part of phosphating oxidation accelerator sodium molybdate, 2.5 part of penetrating agent ethylene glycol, neutralizing agent sodium hydroxide 10 parts, 63.5 parts deionized water.

Embodiment 2

[0033] An environmentally friendly neutral rust remover, comprising the following raw material components in parts by weight: 10 parts of organic acid complexing agent oxalic acid, 10 parts of aminotrimethylidene phosphonic acid (ATMP), 0.35 parts of accelerator zinc citrate, chelating agent glucose 0.8 part of sodium, 0.8 part of sodium tartrate, 1.8 part of surfactant SDBS, 0.7 part of phosphating oxidation accelerator sodium hypochlorite, 2.6 part of penetrating agent isopropyl alcohol, 15 parts of neutralizing agent sodium carbonate, 57.95 parts of deionized water.

Embodiment 3

[0035] An environmentally friendly neutral rust remover, comprising the following raw material components in parts by weight: 12 parts of organic acid complexing agent tartaric acid, 12 parts of hydroxyethylidene diphosphonic acid (HEDP), 0.4 parts of accelerator calcium acetate, chelating agent EDTA -2Na, 1.2 parts, 0.5 parts of sodium citrate, 1.8 parts of surfactant OP-10, 7 parts of phosphating oxidation accelerator sodium molybdate, 2.5 parts of penetrating agent ethylene glycol, 18 parts of neutralizing agent potassium hydroxide, 44.6 parts of ionized water.

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Abstract

The invention discloses an environment-friendly neutral rust remover and a preparation method thereof, and the environment-friendly neutral rust remover comprises the following raw material components in parts by weight: 15-30 parts of an organic acid complexing agent, 0.2-0.5 part of an accelerant, 1.0-2.0 parts of a chelating agent, 1.0-2.0 parts of a surfactant, 0.6-0.8 part of a phosphorization oxidation accelerant, 2.0-3.0 parts of a penetrant, 10-24.5 parts of a neutralizer and the balance of deionized water. The rust remover is used for removing rust on the surface of a steel material, only reacts with rust and oxide skin on the metal surface during rust removal, does not cause corrosion and hydrogen embrittlement phenomena on the metal surface, does not generate acid mist, does not contain any substance harmful to the environment, and forms a compact complex film on the metal surface after rust removal, so that the long-acting rust-proof effect is achieved.

Description

technical field [0001] The invention relates to the technical field of rust removers, in particular to an environmentally friendly neutral rust remover. Background technique [0002] In the existing industrial production, steel material is a widely used material. However, steel materials are prone to various rust phenomena during production, transportation and storage. At present, the rust removal methods used for iron and steel materials generally include physical rust removal and chemical rust removal. [0003] Physical rust removal methods generally include manual grinding, mechanical shot blasting and other methods. This method will not cause waste liquid and exhaust gas emissions, but it is labor-intensive, difficult to remove some fine pitting, and will exert stress on the steel and change the shape of the steel. The existing chemical rust removal method generally adopts the pickling method of hydrochloric acid, sulfuric acid, phosphoric acid or various compound aci...

Claims

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Application Information

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IPC IPC(8): C23G1/24C23C22/68
CPCC23G1/24C23C22/68Y02P10/20
Inventor 韩仁刚刘海萌
Owner 潍坊佳钢贸易有限公司
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