CN106119828A - A kind of process of surface treatment of ferrous metal product - Google Patents
A kind of process of surface treatment of ferrous metal product Download PDFInfo
- Publication number
- CN106119828A CN106119828A CN201610450588.XA CN201610450588A CN106119828A CN 106119828 A CN106119828 A CN 106119828A CN 201610450588 A CN201610450588 A CN 201610450588A CN 106119828 A CN106119828 A CN 106119828A
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- CN
- China
- Prior art keywords
- metal product
- ferrous metal
- acid
- hydrochloric acid
- oxide
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
- C23C22/76—Applying the liquid by spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/28—Acidic compositions for etching iron group metals
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention discloses the process of surface treatment of a kind of ferrous metal product, comprise the following steps: a) high-pressure washing: use high pressure water jets to be mapped to surface of metal product；B) oil removing: use Solvent degreasing, dip in organic solvent with cotton yarn and ferrous metal product surface is cleaned, or ferrous metal product is immersed in the groove filling organic solvent, carry out oil removing by dipping；C) chemical etching: according to the Nomenclature Composition and Structure of Complexes of ferrous metal product surface oxide, selects hydrochloric acid or sulphuric acid or hydrochloric acid to carry out etch with the mixture of sulphuric acid；D) washing: the ferrous metal product through chemical etching is carried out with clear water；E) bonderizing: Phosphating Solution temperature is heated to 60～65 DEG C, then sprays to ferrous metal product surface, and injecting time is 11～12min, and after phosphatization, phosphating coat weight is 2.0～2.5g/m2, present invention process is simple, it is easy to operation, can quickly be removed by the corrosion thing of ferrous metal product surface.
Description
Technical field
The present invention relates to metallic article, it is more particularly related to the surface science and engineering of a kind of ferrous metal product
Skill.
Background technology
When the ferrous metal product of iron and steel class contacts with Atmospheric Long-term or carries out heat treatment, its surface can cover last layer rust
Erosion thing or black oxidation skin, its chemical composition is the oxide of various ferrum.When carrying out various surface and processing, it is necessary to remove in advance
These oxides.Its method has hand cleaning, mechanical derusting and derusting by sandblasting etc., and the most general method is to use various acids
Agent treated eliminates rust.The essence of this process is by the acids dissolution to corrosion thing, and acid in processing procedure
Class and metallic matrix react the hydrogen produced and clean up the mechanical stripping effect of corrosion thing from metal surface by corrosion thing.
Summary of the invention
It is an object of the present invention to provide the process of surface treatment of a kind of ferrous metal product, remove ferrous metal product efficiently
The corrosion thing on surface.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:
The process of surface treatment of a kind of ferrous metal product, comprises the following steps:
A) high-pressure washing: use high pressure water jets to be mapped to surface of metal product, the dirt of surface attachment is removed；
B) oil removing: use Solvent degreasing, organic solvent be gasoline, industrial naptha, Oleum Terebinthinae, toluene, dimethylbenzene, two
One in ethyl chloride, trichloro ethylene, tetrachloroethylene, dips in organic solvent with cotton yarn and cleans ferrous metal product surface,
Or ferrous metal product is immersed in the groove filling organic solvent, carry out oil removing by dipping；
C) chemical etching: according to the Nomenclature Composition and Structure of Complexes of ferrous metal product surface oxide, select different acid, work as black
Surface of metal product only with when being mainly composed of the loose corrosion thing of ferrum oxide, uses hydrochloric acid to carry out etch；When metallic article table
When face is close oxide skin, use sulphuric acid etch；When corrosion thing and the oxide skin of metal surface are many containing the oxide of high price ferrum
Time, use mixed acid to carry out etch, mixed acid is the mixture of hydrochloric acid and sulphuric acid, contains the hydrochloric acid and 10% of 10% in mixed acid
Sulphuric acid；
D) washing: the ferrous metal product through chemical etching is carried out with clear water；
E) bonderizing: Phosphating Solution temperature is heated to 60～65 DEG C, then sprays to ferrous metal product surface, injection
Time is 11～12min, and after phosphatization, phosphating coat weight is 2.0～2.5g/m2。
Preferably, ferrous metal product is placed in defatting machine and carries out oil removing, is placed with several grooves, in groove in defatting machine
It is equipped with organic solvent, by the mode of mechanical transmission, makes ferrous metal product be immersed oil removing successively.
Preferably, oxide skin is made up of ferrous oxide, ferroso-ferric oxide, iron sesquioxide, is from inside to outside: oxidation Asia
Ferrum, ferroso-ferric oxide, iron sesquioxide.
Preferably, in step c, concentration of hydrochloric acid is less than 15%, and sulfuric acid concentration is less than 20%.
In step c, when using hydrochloric acid or mixed acid etch, temperature is less than 40 DEG C；When using sulphuric acid, temperature is less than 60 DEG C.
Preferably, in step c, when the hydrochloric acid of etch or the concentration of sulphuric acid or mixed acid are 3% or 5%, and ferrum
When content reaches 90g/L, change hydrochloric acid or sulphuric acid or mixed acid.
Further, in sulfuric acid solution, add phosphorus dimethylbenzene thiourea or in hydrochloric acid solution, add hexamethylenamine.
The invention has the beneficial effects as follows:
Present invention process step is simple, realizes ferrous metal system by high-pressure washing, oil removing, chemical etching, bonderizing
The surface derusting of product.
Detailed description of the invention
Hereinafter embodiments of the invention are described in detail, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
The present invention discloses the process of surface treatment of a kind of ferrous metal product, comprises the following steps:
A) high-pressure washing: use high pressure water jets to be mapped to surface of metal product, the dirt of surface attachment is removed；
B) oil removing: use Solvent degreasing, organic solvent be gasoline, industrial naptha, Oleum Terebinthinae, toluene, dimethylbenzene, two
One in ethyl chloride, trichloro ethylene, tetrachloroethylene, dips in organic solvent with cotton yarn and cleans ferrous metal product surface,
Or ferrous metal product is immersed in the groove filling organic solvent, carry out oil removing by dipping；Also ferrous metal product can be placed
In defatting machine, carry out oil removing, in defatting machine, be placed with several grooves, in groove, be equipped with organic solvent, with the side of mechanical transmission
Formula, makes ferrous metal product be immersed oil removing successively, it is achieved mechanization oil removing；
C) chemical etching: according to the Nomenclature Composition and Structure of Complexes of ferrous metal product surface oxide, select different acid, work as black
Surface of metal product only with when being mainly composed of the loose corrosion thing of ferrum oxide, uses hydrochloric acid to carry out etch, because hydrochloric acid is to system
The etch rates of product is fast, and matrix dissolution is few, oozes hydrogen degree the least；When surface of metal product is close oxide skin, use
Sulphuric acid etch；When the corrosion thing of metal surface and the oxide skin oxide containing high price ferrum are many, mixed acid is used to carry out etch, mixed
Closing the mixture that acid is hydrochloric acid and sulphuric acid, contain hydrochloric acid and the sulphuric acid of 10% of 10% in mixed acid, mixed acid both can play hydrogen
Tear effect to oxide skin, can accelerate again the chemolysis of Fe2O3 and Fe3O4, accelerates to clean surface corrosion thing.
The factor affecting chemical etching effect is a lot, and the most mainly concentration, etch temperature etc. are for the shadow of cleaning performance
Ring.Facts have proved there is an optimum sulfuric acid concentration corresponding to maximum etch rates, this value is about 25% (weight).In order to subtract
The loss of few iron-based body, the concentration generally used in production is 20%.For hydrochloric acid, although along with concentration increases etch rates
Increasing always, but test result indicate that, when the concentration of hydrochloric acid is more than 20%, the dissolution velocity of matrix is than the dissolving of oxide
The increase of speed much faster, is rarely employed concentrated hydrochloric acid in therefore producing.In order to avoid hydrochloric acid volatilization loss, reduce hydrogen chloride poison
The amount of precipitation of gas, concentration of hydrochloric acid should control below 15%.
In order to reduce the loss of parent metal, prevent the effusion of acid mist, and the service life of extension device, do not adopt
Using high temperature etch, when using hydrochloric acid or mixed acid etch, temperature is less than 40 DEG C；When using sulphuric acid, temperature is less than 60 DEG C.
D) washing: the ferrous metal product through chemical etching is carried out with clear water；
E) bonderizing: Phosphating Solution temperature is heated to 60～65 DEG C, then sprays to ferrous metal product surface, injection
Time is 11～12min, and after phosphatization, phosphating coat weight is 2.0～2.5g/m2。
Oxide skin is made up of ferrous oxide, ferroso-ferric oxide, iron sesquioxide, is from inside to outside: ferrous oxide, four oxygen
Change three-iron, iron sesquioxide.
Along with the prolongation of the time of use, the effect of etch solution will be gradually lowered.This is owing in acid solution, the concentration of acid subtracts
The reason that the concentration of little and lysed ferrum increases, when the hydrochloric acid of etch or the concentration of sulphuric acid or mixed acid are 3% or 5%,
And when the content of ferrum reaches 90g/L, change hydrochloric acid or sulphuric acid or mixed acid.
In order to alleviate the dissolving of parent metal during etch, it is ensured that it is existing that hydrogen is oozed in the physical dimension of metallic article and minimizing
As, etching solution should add corrosion inhibiter, as added phosphorus dimethylbenzene thiourea in sulfuric acid solution, hydrochloric acid solution adds crow Lip river
Tropine.
Invention described above embodiment, is not intended that limiting the scope of the present invention, any in the present invention
Spirit and principle within amendment, equivalent and the improvement etc. made, should be included in the claim protection model of the present invention
Within enclosing.
Claims (7)
1. the process of surface treatment of a ferrous metal product, it is characterised in that comprise the following steps:
A) high-pressure washing: use high pressure water jets to be mapped to surface of metal product, the dirt of surface attachment is removed；
B) oil removing: using Solvent degreasing, organic solvent is gasoline, industrial naptha, Oleum Terebinthinae, toluene, dimethylbenzene, two chloroethenes
One in alkane, trichloro ethylene, tetrachloroethylene, dips in organic solvent with cotton yarn and cleans ferrous metal product surface, or will
Ferrous metal product immerses in the groove filling organic solvent, carrys out oil removing by dipping；
C) chemical etching: according to the Nomenclature Composition and Structure of Complexes of ferrous metal product surface oxide, select different acid, work as ferrous metal
Product surface only with when being mainly composed of the loose corrosion thing of ferrum oxide, uses hydrochloric acid to carry out etch；When surface of metal product is
Closely during oxide skin, use sulphuric acid etch；When the corrosion thing of metal surface and the oxide skin oxide containing high price ferrum are many, adopt
Carrying out etch with mixed acid, mixed acid is the mixture of hydrochloric acid and sulphuric acid, contains hydrochloric acid and the sulfur of 10% of 10% in mixed acid
Acid；
D) washing: the ferrous metal product through chemical etching is carried out with clear water；
E) bonderizing: Phosphating Solution temperature is heated to 60～65 DEG C, then sprays to ferrous metal product surface, injecting time
Being 11～12min, after phosphatization, phosphating coat weight is 2.0～2.5g/m2。
The process of surface treatment of a kind of ferrous metal product, it is characterised in that ferrous metal product
It is placed in defatting machine and carries out oil removing, in defatting machine, be placed with several grooves, in groove, be equipped with organic solvent, with mechanical transmission
Mode, makes ferrous metal product be immersed oil removing successively.
The process of surface treatment of a kind of ferrous metal product, it is characterised in that oxide skin is by oxygen
Change ferrous iron, ferroso-ferric oxide, iron sesquioxide composition, be from inside to outside: ferrous oxide, ferroso-ferric oxide, iron sesquioxide.
The process of surface treatment of a kind of ferrous metal product, it is characterised in that hydrochloric acid in step c
Concentration is less than 15%, and sulfuric acid concentration is less than 20%.
The process of surface treatment of a kind of ferrous metal product, it is characterised in that in step c, uses
When hydrochloric acid or mixed acid etch, temperature is less than 40 DEG C；When using sulphuric acid, temperature is less than 60 DEG C.
The process of surface treatment of a kind of ferrous metal product, it is characterised in that in step c, works as leaching
When the hydrochloric acid of erosion or the concentration of sulphuric acid or mixed acid are 3% or 5%, and when the content of ferrum reaches 90g/L, change hydrochloric acid or sulphuric acid
Or mixed acid.
The process of surface treatment of a kind of ferrous metal product, it is characterised in that in sulfuric acid solution
Add phosphorus dimethylbenzene thiourea or in hydrochloric acid solution, add hexamethylenamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610450588.XA CN106119828A (en) | 2016-06-17 | 2016-06-17 | A kind of process of surface treatment of ferrous metal product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610450588.XA CN106119828A (en) | 2016-06-17 | 2016-06-17 | A kind of process of surface treatment of ferrous metal product |
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| CN106119828A true CN106119828A (en) | 2016-11-16 |
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| CN201610450588.XA Pending CN106119828A (en) | 2016-06-17 | 2016-06-17 | A kind of process of surface treatment of ferrous metal product |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107177854A (en) * | 2017-06-07 | 2017-09-19 | 合肥汇之新机械科技有限公司 | A kind of surface treatment method of ferrous metal product |
| CN107201539A (en) * | 2017-06-22 | 2017-09-26 | 合肥汇之新机械科技有限公司 | A kind of process of surface treatment of metallic article |
| CN107413828A (en) * | 2017-09-22 | 2017-12-01 | 南通天地和环保科技有限公司 | The renovation of useless pail pack, processing method |
| CN113560261A (en) * | 2021-08-04 | 2021-10-29 | 句容市江电电器机械有限公司 | Oil and rust removing treatment method for transformer surface |
| CN115283309B (en) * | 2022-07-06 | 2024-04-02 | 中船重工龙江广瀚燃气轮机有限公司 | Method for removing residual scale and paint layer on surface of gas turbine casing by chemical method |
-
2016
- 2016-06-17 CN CN201610450588.XA patent/CN106119828A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 张东初: "《设计材料与加工工艺》", 30 September 2003, 郑州：河南人民出版社 * |
| 陈启复: "《中国气动工业发展史》", 31 October 2012, 北京：机械工业出版社 * |
| 陈天佐: "《机械制造检查技术 热加工部分》", 28 February 1988, 北京：国防工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107177854A (en) * | 2017-06-07 | 2017-09-19 | 合肥汇之新机械科技有限公司 | A kind of surface treatment method of ferrous metal product |
| CN107201539A (en) * | 2017-06-22 | 2017-09-26 | 合肥汇之新机械科技有限公司 | A kind of process of surface treatment of metallic article |
| CN107413828A (en) * | 2017-09-22 | 2017-12-01 | 南通天地和环保科技有限公司 | The renovation of useless pail pack, processing method |
| CN113560261A (en) * | 2021-08-04 | 2021-10-29 | 句容市江电电器机械有限公司 | Oil and rust removing treatment method for transformer surface |
| CN115283309B (en) * | 2022-07-06 | 2024-04-02 | 中船重工龙江广瀚燃气轮机有限公司 | Method for removing residual scale and paint layer on surface of gas turbine casing by chemical method |
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Application publication date: 20161116 |