CN103205739A - Surface chemical treatment method for improving abrasive resistance of steel material - Google Patents
Surface chemical treatment method for improving abrasive resistance of steel material Download PDFInfo
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- CN103205739A CN103205739A CN2013101530481A CN201310153048A CN103205739A CN 103205739 A CN103205739 A CN 103205739A CN 2013101530481 A CN2013101530481 A CN 2013101530481A CN 201310153048 A CN201310153048 A CN 201310153048A CN 103205739 A CN103205739 A CN 103205739A
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Abstract
The invention discloses a surface chemical treatment method for improving the abrasive resistance of a steel and iron material. The method comprises the steps of removing dirt and oxides on the surface of a steel and iron material, an drying, reacting the dried steel and iron material in a reaction kettle together with a reactant, wherein the reactant is 100-150g/L of molybdic acid ammonia water solution, and the reaction conditions are as follows: the pH value is 2-3, the temperature is 150-180 DEG C, the pressure is 1.5-1.8Mpa after pressurizing through filling an inert gas, and the time is 2-3 hours; and heating the reacted steel and iron material to 700-750 DEG C in a reducing atmosphere, and preserving heat for 30-45min. According to the method disclosed by the invention, 0.1-0.3mm of a molybdenum-enriched metal compound layer can grow on the surface of the steel and iron material, so as to enhance strength, corrosion resistance and abrasive resistance of the steel and iron material. Waste liquid generated from reaction can be recycled after regulating the concentration of ammonium molybdate, and the entire process had the characteristics of environmental protection, economic performance, simple operation and the like.
Description
Technical field
The present invention relates to a kind of steel material surface be carried out chemical treatment to improve the method for material hardness and wear resisting property.
Background technology
Iron and steel is the maximum metal of global output, the annual a large amount of iron and steel of consumption that need in the whole world.The physical strength height of iron and steel, good processability can be easy to be processed into various goods and is widely used in all trades and professions, and the manufacturing of various mechanical means, material of construction and daily life tools all be unable to do without iron and steel.
The consumption of iron and steel, the one of the main reasons of inefficacy are worn and torn exactly.According to the related data statistics, the wearing and tearing of the annual whole world have caused about 1/3rd the iron and steel energy and raw-material consumption in vain, and the direct or indirect loss of economic aspect that is caused by wearing and tearing has reached hundreds billion of units.Therefore improve the wear resisting property of ferrous materials, the loss that the wear resisting steel iron material reduction wearing and tearing of development of new cause becomes a vital task of the development of the national economy.
Bear generally speaking
LoadPiece surface often be in the maximum stress state, direct friction and contact with media environment each other.Therefore, the wearing and tearing of part and lost efficacy and also to occur in the surface mostly or from the surface, as increasing material surface by surface Hardening Treatment
Hardness, improve textura epidermoidea's structure etc., just can improve fatigue strength and the wear resistance of part significantly.Therefore improve the ferrous materials wear resisting property, one of effective means that prolongs ferrous materials work-ing life is that ferrous materials is carried out surface Hardening Treatment.Surface Hardening Treatment can significantly be improved the steel material surface performance, improves intensity, the wear resisting property of material and improves corrosion resistance nature.Material surface strengthening handled means and mainly comprised present stage: 1) metal heat treatmet comprises: quenching, normalizing, modified, carbon, nitrogen ooze etc. altogether.Its role is to improve metal skin hardness, toughness, wear resisting property etc.2) functional coating, as: hard chrome plating, chemical nickel plating etc.Its role is to improve metal skin hardness, wear resistance, anticorrosion and decoration functions.3) other surface treatment methods comprise: mechanical stitch, plasma injection etc. its role is to improve metal parts surface hardness and wear resistance.
Traditional method for surface hardening of ferrous materials is also had in the face of complex process but then, cost is higher and to the shortcoming such as unfriendly of environment, at this situation, a kind of strengthening effect of expectation exploitation is better, the simpler and surface intensified technique of environmental protection more of technology.
Summary of the invention
Technical problem:The invention provides a kind of hardness that can improve material and wear resisting property, can generate the chemical conversion treatment method of the raising ferrous materials wear resistance of high strength, high-compactness, corrosion-resistant, wear-resistant metal compound layer at steel material surface.
Technical scheme:The chemical conversion treatment method of raising ferrous materials wear resistance of the present invention may further comprise the steps:
A. remove steel material surface spot and oxide compound earlier, then that surface-conditioning is good ferrous materials carries out drying;
B. dried ferrous materials being put into autoclave pressure reacts with reagent, reagent is the molybdenum acid ammonia aqueous solution of 100g/L ~ 150g/L, and reaction conditions is: pH value 2 ~ 3,150 ℃ ~ 180 ℃ of temperature, feeding rare gas element are forced into 1.5MPa ~ 1.8MPa, time 2 h ~ 3h;
C. reacted ferrous materials is carried and be heated to 700 ~ 750 ℃ under the reducing atmosphere, insulation 30min ~ 45min.
The inventive method make ferrous materials under the condition of High Temperature High Pressure with ammonium molybdate aqueous solution generation physical-chemical reaction, make steel material surface generate the metal compound layer of rich molybdenum.
Beneficial effect:The present invention compared with prior art has the following advantages:
The present invention proposes a kind of surface Hardening Treatment technology of simple and environmental protection, issue the metal compound layer that living physical-chemical reaction makes the rich molybdenum of steel material surface generation 0.1 ~ 0.3mm by ferrous materials and molybdenum acid ammonia solution in the condition of High Temperature High Pressure, as shown in Figure 1, can find out obviously that material surface generates the more shallow rich molybdenum layer of one deck 0.1 ~ 0.3mm color.。This metal compound layer has high strength, high-compactness, corrosion-resistant, wear-resistant, thereby improves steel material surface intensity, wear resistance and erosion resistance, is a kind of good method of the big part of wearing and tearing in the processing machinery industry.
The ultimate principle of this physical and chemical process: ferrous materials has reducing metal at the trace of high temperature and high pressure (under 150 ℃ ~ 180 ℃, 1.5 ~ 1.8MPa) condition, 1) steel surface molybdenum in the molybdenum acid ammonia is restored; 2) iron can generate ferric sulfate with sulfuric acid reaction and part of sulfuric acid is ferrous; 3) ferrous ion can restore molybdenum with the molybdenum acid ammonia reaction; 4) ferric iron that generates in the system can generate iron molybdate with the molybdenum acid ammonia reaction; 5) iron molybdate can be reduced into iron, molybdenum simple substance and ferromolybdenum under 700 ℃ ~ 750 ℃ reducing atmospheres.The related physical chemical reaction is as follows in the system:
21Me+?Mo
7O
24 6-?+24H
-→21Me
2++7Mo+12H
2O
Fe+?2H
-?→Fe
2++H
2↑
2Fe+?6H
-?→2Fe
3++3H
2↑
Fe+2?Fe
3+→3Fe
2+
42Fe
2+?+?Mo
7O
24 6-?+42H
-→42Fe
3++7Mo+24H
2O
Mo
7O
24 6-+Fe
3+→Fe
2(MoO
4)
3
Fe
2(MoO
4)
3+?6H
2↑→2Fe+3MoO
2+6?H
2O
MoO
2+?2H
2↑→Mo+?2H
2O
3Fe+Mo→Fe
3Mo
High temperature, high pressure have promoted speed of reaction in the reaction system, have saved the reaction times.
The reaction back generates with metallic compound Fe
3Mo is main rich molybdenum layer, and molybdenum content has improved surface strength, wear resistance and the erosion resistance of ferrous materials greatly about 12 ~ 26%.
The waste liquid that the reaction back produces is readjusted ammonium molybdate concentration can return the use of leading portion operation, and emission gases is that hydrogen can be recycled, the relatively environmental protection of whole process.
In sum, the present invention is with a kind of surface Hardening Treatment technology of simple and environmental protection, issues living physical-chemical reaction by ferrous materials and molybdenum acid ammonia solution in the condition of High Temperature High Pressure and makes steel material surface generate the metal compound layer of the rich molybdenum of 0.1 ~ 0.3mm.This metal compound layer has high strength, high-compactness, corrosion-resistant, wear-resistant, thereby improves steel material surface intensity, wear resistance and erosion resistance, and preparation method's technology is simple, and cost is relatively low, can scale operation.
Description of drawings
Fig. 1 for ferrous materials through the figure of the SEM after the inventive method surface Hardening Treatment.
Embodiment
Do further below by the present invention of embodiment and to specify.
Embodiment 1:
Be the steel surface elder generation pickling of 40Cr with the trade mark, use the clear water rinsing clean again, remove surface blot and oxide compound.The 40Cr that surface-conditioning is clean puts into 120 ℃ baking oven vacuum-drying, until surperficial finish-drying.Dried ferrous materials put into autoclave pressure and add the concentration prepare be the molybdenum propylhomoserin solution of 100g/L until flooding, and be between 2 ~ 3 with sulfuric acid conditioned reaction solution in the pH value.Treat to begin after autoclave pressure installs heating and feed nitrogen pressure, treat that material reaction under 150 ± 5 ℃, 1.5 ~ 1.8MPa and pH value 2 ~ 3 conditions begins decompression after 2 hours, lower the temperature and unload still taking-up 40Cr.The 40Cr that takes out is put into the logical hydrogen of tube type resistance furnace be heated to 700 ℃ of insulation 30min ~ 45min.Treat to take out clean surface and dry behind the furnace cooling, behind surperficial finish-drying, smear slushing oil and namely obtain finished product.
Embodiment 2:
Be the steel surface elder generation pickling of Cr12 with the trade mark, use the clear water rinsing clean again, remove surface blot and oxide compound.The Cr12 that surface-conditioning is clean puts into 120 ℃ baking oven vacuum-drying, until surperficial finish-drying.Dried ferrous materials put into autoclave pressure and add the concentration prepare be the molybdenum propylhomoserin solution of 120g/L until flooding, and be between 2 ~ 3 with sulfuric acid conditioned reaction solution in the pH value.Begin heating after autoclave pressure installs and feed nitrogen pressure, treat that material reaction under 160 ± 5 ℃, 1.5 ~ 1.8MPa and pH value 2 ~ 3 conditions begins decompression after 2 hours, lower the temperature and unload still taking-up Cr12.The Cr12 that takes out is put into the logical hydrogen of tube type resistance furnace be heated to 730 ℃ of insulation 30min ~ 45min.Treat to take out clean surface and dry behind the furnace cooling, behind surperficial finish-drying, smear slushing oil and namely obtain finished product.
Embodiment 3:
Be the pickling of 4Cr13 steel surface elder generation with the trade mark, use the clear water rinsing clean again, remove surface blot and oxide compound.The 4Cr13 that surface-conditioning is clean puts into 120 ℃ baking oven vacuum-drying, until surperficial finish-drying.Dried ferrous materials put into autoclave pressure and add the concentration prepare be the molybdenum propylhomoserin solution of 150g/L until flooding, and be between 2 ~ 3 with sulfuric acid conditioned reaction solution in the pH value.Begin heating after autoclave pressure installs and feed nitrogen pressure, treat that material reaction under 180 ± 5 ℃, 1.5 ~ 1.8MPa and pH value 2 ~ 3 conditions begins decompression after 2 hours, lower the temperature and unload still taking-up 4Cr13.The 4Cr13 that takes out is put into the logical hydrogen of tube type resistance furnace be heated to 750 ℃ of insulation 30min ~ 45min.Treat to take out clean surface and dry behind the furnace cooling, behind surperficial finish-drying, smear slushing oil and namely obtain finished product.
Anti-oxidant, hardness and wear resistance through steel after the surface Hardening Treatment can contrast:
Claims (1)
1. chemical conversion treatment method that improves the ferrous materials wear resistance is characterized in that this method may further comprise the steps:
A. remove steel material surface spot and oxide compound earlier, then that surface-conditioning is good ferrous materials carries out drying;
B. dried ferrous materials being put into autoclave pressure reacts with reagent, described reagent is the molybdenum acid ammonia aqueous solution of 100g/L ~ 150g/L, and reaction conditions is: pH value 2 ~ 3,150 ℃ ~ 180 ℃ of temperature, feeding rare gas element are forced into 1.5MPa ~ 1.8MPa, time 2 h ~ 3h;
C. reacted ferrous materials is heated to 700 ~ 750 ℃ under reducing atmosphere, insulation 30min ~ 45min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310153048.1A CN103205739B (en) | 2013-04-28 | 2013-04-28 | Surface chemical treatment method for improving abrasive resistance of steel material |
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| CN201310153048.1A CN103205739B (en) | 2013-04-28 | 2013-04-28 | Surface chemical treatment method for improving abrasive resistance of steel material |
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| CN103205739A true CN103205739A (en) | 2013-07-17 |
| CN103205739B CN103205739B (en) | 2015-04-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114381723A (en) * | 2022-01-12 | 2022-04-22 | 南京工程学院 | Steel workpiece surface corrosion-resistant layer and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0448081A (en) * | 1990-06-15 | 1992-02-18 | Yazaki Corp | Formation of molybdenum film on steel material |
| JPH09268375A (en) * | 1996-04-02 | 1997-10-14 | Nippon Steel Corp | Production of coated steel tube |
| WO2006125499A2 (en) * | 2005-05-23 | 2006-11-30 | Basf Coatings Ag | Corrosion-protection agent and method for current-free application thereof |
| WO2008022819A1 (en) * | 2006-08-24 | 2008-02-28 | Henkel Ag & Co. Kgaa | Chromium-free, thermally curable corrosion protection composition |
| EP1978131A1 (en) * | 2007-03-29 | 2008-10-08 | Atotech Deutschland Gmbh | Means for manufacturing corrosion protection coats on metal surfaces |
| CN102994997A (en) * | 2012-12-06 | 2013-03-27 | 三达奥克化学股份有限公司 | Surface rust removal and rust prevention comprehensive treatment agent for steel core workpiece of rotor of large-scale motor and preparation method |
-
2013
- 2013-04-28 CN CN201310153048.1A patent/CN103205739B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0448081A (en) * | 1990-06-15 | 1992-02-18 | Yazaki Corp | Formation of molybdenum film on steel material |
| JPH09268375A (en) * | 1996-04-02 | 1997-10-14 | Nippon Steel Corp | Production of coated steel tube |
| WO2006125499A2 (en) * | 2005-05-23 | 2006-11-30 | Basf Coatings Ag | Corrosion-protection agent and method for current-free application thereof |
| WO2008022819A1 (en) * | 2006-08-24 | 2008-02-28 | Henkel Ag & Co. Kgaa | Chromium-free, thermally curable corrosion protection composition |
| EP1978131A1 (en) * | 2007-03-29 | 2008-10-08 | Atotech Deutschland Gmbh | Means for manufacturing corrosion protection coats on metal surfaces |
| CN102994997A (en) * | 2012-12-06 | 2013-03-27 | 三达奥克化学股份有限公司 | Surface rust removal and rust prevention comprehensive treatment agent for steel core workpiece of rotor of large-scale motor and preparation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114381723A (en) * | 2022-01-12 | 2022-04-22 | 南京工程学院 | Steel workpiece surface corrosion-resistant layer and preparation method thereof |
| CN114381723B (en) * | 2022-01-12 | 2022-12-20 | 南京工程学院 | Steel workpiece surface corrosion-resistant layer and preparation method thereof |
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| CN103205739B (en) | 2015-04-08 |
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