CN102766838A - Anti-rust, oil-resistant and antioxidation secondary steel surface treatment method - Google Patents
Anti-rust, oil-resistant and antioxidation secondary steel surface treatment method Download PDFInfo
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- CN102766838A CN102766838A CN2012102317002A CN201210231700A CN102766838A CN 102766838 A CN102766838 A CN 102766838A CN 2012102317002 A CN2012102317002 A CN 2012102317002A CN 201210231700 A CN201210231700 A CN 201210231700A CN 102766838 A CN102766838 A CN 102766838A
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Abstract
The invention discloses an anti-rust, oil-resistant and antioxidation secondary steel surface treatment method. The anti-rust, oil-resistant and antioxidation secondary steel surface treatment method, which belongs to the technical field of steel, first carries out surface-carbonitriding treatment on steel, and then carries out anti-rust, oil-resistant and antioxidation treatment on the surface of the steel, more specifically, an acid-alkali-salt hybrid method is adopted to treat the surface of the steel, scavenger can be isolated from the metal, and thereby the over-corrosion of the steel can be prevented. The cost is low, the investment is little, the steel surface treatment effect is good, moreover, the surface banding resistance and abrasive resistance of the steel are high, the corrosion resistance of the steel is enhanced, meanwhile, the toughness and flexibility of the core are high, consequently, the life of the steel is greatly prolonged, and the added value and industrial benefit of the steel are greatly increased.
Description
Technical field
The invention belongs to the iron and steel technical field, relate to surface treatment and antirust, anti-corrosive thereof.Especially the grease proofing anti-oxidation method of a kind of iron and steel secondary surface preparation rust protection.
Background technology
Single physics or chemical method are often adopted in the steel surface rust cleaning, mainly adopt the rust cleaning of derusting by sandblast and strong acid pickling in the past.Derusting by sandblast investment is big, cost still, big, the contaminate environment of labour intensity; And strong acid pickling is prone to produce excessive erosion, often generates the secondary rust after the pickling, and a large amount of steel equipment long-term exposure are in air. be corroded at a terrific speed; For improving performances such as material is anticorrosive, anti-oxidant, generally can carry out surface treatment to material, the conventional process for treating surface that adopts is a Dacromet Technology; This technology is a kind of comparatively sophisticated metal surface anticorrosive technology, good corrosion resistance, the good performance that is coated with deeply; No hydrogen embrittlement phenomenon; Pollution-free etc., but adopt the scratch resistance of Dacromet Technology coatings prepared poor, and coated standardized component is after long-distance transport arrives the point of destination; Spot corrosion appears in regular meeting, and this has largely influenced the surface property of product; In the derusting anti-corrosive method that has, contain unsettled 12 system tomb sodium sulfate in the rust cleaning liquid of employing, so the stability of rust cleaning liquid is not high, and rust cleaning speed is unhappy; Also have some anti-corrosion methods, like plating hard chromium on surface method, salt bath Combined Processing method, triniding, cementing process, oxidation style etc.But salt bath Combined Processing method receives the restriction with the salt specification of quality, if nitridation salt can't meet the quality requirement, can cause the defective of infiltration layer poor stability, and have problem of environmental pollution.As for the plating hard chromium on surface method, then more can cause environmental pollution; Also have the equal ubiquity removing of methods such as the cleaning of employing, brushing metallic surface corrosion relatively good, but scale removal is not thorough, particularly removes new steel surface compact oxidation layer difficulty more; Complex process and and the required time long, temperature control, result is unsatisfactory; Oxide debris is removed the standard that requires that totally do not reach, and in order effectively to remove the iron and steel compact oxidation layer, large-scale component is all adopted river " sandblast " processing at present; But investment such as equipment, factory building needs hundreds thousand of to 1,000,000 and want water, electricity, air, lays airduct. install electric wiring, make the shape sand-blast device. use silica sand; Even the steel sand injection, atmospheric pollution is very serious, and labour protection requires tight; Cost is high, and labour intensity is big.
Summary of the invention
To the deficiency of prior art, the present invention has designed the grease proofing anti-oxidation method of a kind of iron and steel secondary surface preparation rust protection in order to address the above problem.This method main technique step is following:
A kind of steel surface is handled the method for rust protection, and complete heat treatment is carried out to steel in (1), adopts the underannealing method; Steel are put into High Temperature Furnaces Heating Apparatus, and being heated temperature is 760-800 ℃, slowly cooling behind the insulation 3-5h; And then be heated to 800-960 ℃, carry out normalizing treatment, high temperature 2-3h; The spraying air cooling
(2) to carrying out gas carbonitriding through heat treated steel; Promptly in gas carbruizing furance, splash into carbonic acid gas and ammonia, temperature is controlled at 820-860 ℃, insulation 3-5h; Carbon nitrogen is infiltrated the steel top layer simultaneously, improve hardness, wear resistance, fatigue strength and the erosion resistance of steel surface.
Described anti-embroidery erosion is: a kind of sanitas that (1) is mixed by soda acid salt, each percentage composition of this sanitas is following: HNO
30.3-3%, H
3PO
410-20%, H
2SO
42-3%, NaCl4-5%, NaNO
34-6%, Ni (NO
3)
23-5%, alkylol amide 3-5%, hexamethylenetetramine 0.1-0.2%, all the other are water, and (2) mix the back spary in steel surface with this sanitas, and coat-thickness is 20-30 μ m, and is air-dry in the air after flushing with clean water again.
Physical treatment is carried out on its surface once more; (1) adopts shot peening, be about to steel and place under the effect of high speed iron ball, its surperficial hardness and inner model are changed; Remove simultaneously because the surface oxidation phenomenon that carbonitriding causes; (2) to carrying out surface finish, adopt the laser polishing method, put it into afterwards and carry out heat tracing air cooling after 30 minutes in the High Temperature Furnaces Heating Apparatus through the steel of shot-peening.
Comprise further steel put into a kind of Dyclo paint liquid, soaked 5-8 minute that oven dry gets final product then, finally obtains the strong steel of high-temperature-resistant and anti-corrosion property.
One of advantage of the present invention: gas nitrocarburizing makes the metallic surface form one deck with ε-Fe
2-3C and γ-Fe
4N is main bright layer, and this tissue has very high hardness, plays wear-resisting effect, tired slight and erosion resistance.
Advantage two of the present invention: the present invention has the characteristics in pure steel surface absorption film-forming, can isolate contacting of scavenging agent and metal, prevents the generation of iron and steel excessive erosion and hydrogen embrittlement phenomenon; This scavenging agent is lower to corrosion on Equipment property, and is safe and reliable, is beneficial to the reduction equipment cost;
Advantage three of the present invention: polishing is a tectorium of getting rid of the bright layer surface; The top layer is a zone of oxidation, and its chemical property is very stable, and good solidity to corrosion is arranged.Therefore, have wear resistance, solidity to corrosion, fatigue resistence preferably through the material or the component surface of gas nitrocarburizing and rear oxidation art breading, and reduced frictional coefficient.
Advantage four of the present invention: the present invention has absorbed the advantage of Dacroment and coating, makes on the steel structural part surface to form to have good wear-resisting, corrosion resistant sealer, significantly improves the work-ing life of steel structural part in exceedingly odious environment.
Embodiment
Embodiment one
Steel are put into High Temperature Furnaces Heating Apparatus, and being heated temperature is 760 ℃, slowly cooling behind the insulation 3h, and then be heated to 800 ℃, and carry out normalizing treatment, high temperature 2h, the spraying air cooling is placed in steel then and feeds carbonic acid gas and ammonia in the gas carbruizing furance.Temperature is controlled at 820 ℃, insulation 3h; At steel surface spary sanitas, the sanitas ratio is: HNO
30.3%, H
3PO
410%, H
2SO
42%, NCl 4%, NaNO
34%, Ni (NO
3)
23%, alkylol amide 3%, hexamethylenetetramine 0.1%, all the other are water, and are air-dry in the air after flushing with clean water again; Steel after air-dry are carried out shot peening; Carrying out surface finish afterwards again puts it into and carries out heat tracing air cooling after 30 minutes in the High Temperature Furnaces Heating Apparatus; Steel after the polishing are put into a kind of Dyclo paint liquid, soaked 5 minutes, oven dry gets final product then.
Embodiment two
Steel are put into High Temperature Furnaces Heating Apparatus, and being heated temperature is 800 ℃, slowly cooling behind the insulation 5h, and then be heated to 960 ℃, and carry out normalizing treatment, high temperature 3h, the spraying air cooling is placed in steel then and feeds carbonic acid gas and ammonia in the gas carbruizing furance.Temperature is controlled at 860 ℃, insulation 4.5h; At steel surface spary sanitas, the sanitas ratio is: HNO
33%, H
3PO
420%, H
2SO
43%, NCl 5%, NaNO
36%, Ni (NO
3)
25%, alkylol amide 5%, hexamethylenetetramine 0.2%, all the other are water, and are air-dry in the air after flushing with clean water again; Steel after air-dry are carried out shot peening; Carrying out surface finish afterwards again puts it into and carries out heat tracing air cooling after 30 minutes in the High Temperature Furnaces Heating Apparatus; Steel after the polishing are put into a kind of Dyclo paint liquid, soaked 8 minutes, oven dry gets final product then.
Applicant's statement; The present invention explains detailed process equipment of the present invention and technical process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technical process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technical process could be implemented.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (4)
1. a steel surface is handled the method for rust protection, it is characterized in that:
(1) steel are carried out complete heat treatment, adopt the underannealing method, steel are put into High Temperature Furnaces Heating Apparatus, being heated temperature is 760-800 ℃; Slowly cooling behind the insulation 3-5h, and then be heated to 800-960 ℃, carry out normalizing treatment; High temperature 2-3h, the spraying air cooling
(2) to carrying out gas carbonitriding through heat treated steel; Promptly in gas carbruizing furance, splash into carbonic acid gas and ammonia, temperature is controlled at 820-860 ℃, insulation 3-5h; Carbon nitrogen is infiltrated the steel top layer simultaneously, improve hardness, wear resistance, fatigue strength and the erosion resistance of steel surface.
2. method according to claim 1 is characterized in that, described anti-embroidery erosion is:
(1) a kind of sanitas that is mixed by soda acid salt, each percentage composition of this sanitas is following: HNO
30.3-3%, H
3PO
410-20%, H
2SO
42-3%, NaCl 4-5%, NaNO
34-6%, Ni (NO
3)
23-5%, alkylol amide 3-5%, hexamethylenetetramine 0.1-0.2%, all the other are water,
(2) this sanitas is mixed the back spary in steel surface, coat-thickness is 20-30 μ m, and is air-dry in the air after flushing with clean water again.
3. method according to claim 1 is carried out physical treatment once more to its surface, it is characterized in that:
(1) adopts shot peening, be about to steel and place under the effect of high speed iron ball, its surperficial hardness and inner model are changed, remove simultaneously because the surface oxidation phenomenon that carbonitriding causes.
(2) to carrying out surface finish, adopt the laser polishing method, put it into afterwards and carry out heat tracing air cooling after 30 minutes in the High Temperature Furnaces Heating Apparatus through the steel of shot-peening.
4. according to the antirust anti-oxidation processing method of claim 1,2 or 3 described ferrous materials, steel are put into a kind of Dyclo paint liquid, soaked 5-8 minute, oven dry gets final product then, finally obtains the strong steel of high-temperature-resistant and anti-corrosion property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102317002A CN102766838A (en) | 2012-07-05 | 2012-07-05 | Anti-rust, oil-resistant and antioxidation secondary steel surface treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102317002A CN102766838A (en) | 2012-07-05 | 2012-07-05 | Anti-rust, oil-resistant and antioxidation secondary steel surface treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102766838A true CN102766838A (en) | 2012-11-07 |
Family
ID=47094402
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|---|---|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276345A (en) * | 2012-12-28 | 2013-09-04 | 郭伟 | QPQ salt bath composite strengthening and modifying high and new technology applied to automobile component metal surface |
| CN103526213A (en) * | 2013-10-21 | 2014-01-22 | 无锡鹰贝精密轴承有限公司 | Method of improving service life of 16MnCr5 part |
| CN105063514A (en) * | 2015-09-07 | 2015-11-18 | 宁波瑞国精机工业有限公司 | Iron chain pin for vehicles and processing method thereof |
| CN107083522A (en) * | 2017-03-27 | 2017-08-22 | 芜湖市永帆精密模具科技有限公司 | A kind of interior tough and outer hard bearing steel ball |
| CN114633218A (en) * | 2022-03-04 | 2022-06-17 | 贵州捷盛钻具股份有限公司 | Surface treatment method and surface treatment device for drill rod and drill rod manufacturing method |
-
2012
- 2012-07-05 CN CN2012102317002A patent/CN102766838A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276345A (en) * | 2012-12-28 | 2013-09-04 | 郭伟 | QPQ salt bath composite strengthening and modifying high and new technology applied to automobile component metal surface |
| CN103276345B (en) * | 2012-12-28 | 2015-07-22 | 上海尚职纳米科技有限公司 | QPQ salt bath composite strengthening and modifying high and new technology applied to automobile component metal surface |
| CN103526213A (en) * | 2013-10-21 | 2014-01-22 | 无锡鹰贝精密轴承有限公司 | Method of improving service life of 16MnCr5 part |
| CN105063514A (en) * | 2015-09-07 | 2015-11-18 | 宁波瑞国精机工业有限公司 | Iron chain pin for vehicles and processing method thereof |
| CN107083522A (en) * | 2017-03-27 | 2017-08-22 | 芜湖市永帆精密模具科技有限公司 | A kind of interior tough and outer hard bearing steel ball |
| CN114633218A (en) * | 2022-03-04 | 2022-06-17 | 贵州捷盛钻具股份有限公司 | Surface treatment method and surface treatment device for drill rod and drill rod manufacturing method |
| CN114633218B (en) * | 2022-03-04 | 2023-09-19 | 贵州捷盛钻具股份有限公司 | Surface treatment method and device for drill rod and drill rod manufacturing method |
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Application publication date: 20121107 |