CN1116436C - Biphase composite anti-corrosion treatment method for ferrous metal material and workpiece - Google Patents
Biphase composite anti-corrosion treatment method for ferrous metal material and workpiece Download PDFInfo
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- CN1116436C CN1116436C CN 01129198 CN01129198A CN1116436C CN 1116436 C CN1116436 C CN 1116436C CN 01129198 CN01129198 CN 01129198 CN 01129198 A CN01129198 A CN 01129198A CN 1116436 C CN1116436 C CN 1116436C
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- gas
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000011282 treatment Methods 0.000 title claims abstract description 19
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title claims description 7
- 238000005260 corrosion Methods 0.000 title abstract description 12
- 239000002131 composite material Substances 0.000 title description 2
- 239000007769 metal material Substances 0.000 title description 2
- 239000007789 gas Substances 0.000 claims abstract description 29
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 15
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000035611 feeding Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000011221 initial treatment Methods 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 11
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 150000003839 salts Chemical class 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005121 nitriding Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract 1
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- 229910001882 dioxygen Inorganic materials 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The existing nitriding and tufftriding methods can improve the wear resistance and fatigue resistance of steel workpieces, but have poor corrosion resistance; the N-C co-permeation or salt bath soft nitriding re-salt bath oxidation process can improve the corrosion resistance, but the process is complicated, the working procedures are too many, and the operation is inconvenient. The present invention can overcome these disadvantages. The method is characterized in that the multi-gas heat preservation treatment process is that the furnace temperature reaches about 585 ℃, ammonia gas, carbon dioxide gas and oxygen gas are simultaneously introduced at the flow rate of 120 liters/minute, the volume proportion of the three gases is 1: 0.05-0.20: 0.02-0.15, the three gases are closed after heat preservation is carried out for 2-5 hours, and nitrogen gas is introduced to cool the three gases to 550 ℃ so as to discharge the product. The method is simple and convenient to operate, the whole process is completed in the furnace once, the production period is short, pollution is avoided, the product has strong corrosion resistance and oxidation resistance, and the tensile strength and the fatigue resistance are obviously improved.
Description
Technical field:
The present invention relates to ferrous material and workpiece anti-corrosive treatment methods such as a kind of carbon steel, steel alloy, cast steel, cast iron, particularly relate to a kind of gas N-C that can improve its wear resistance, fatigue resistance and resistance to corrosion effectively and blend the treatment process that oxidation style combines altogether.
Background technology:
Ferrous material is the metallic substance of consumption maximum of many uses, influence work-ing life owing to be easy to corrosion oxidation, so the protection against corrosion problem is an important research project always.Earlier 1900s, the technology of carrying out nitrogenize in ammonia is at first invented by moral, U.S. two countries, shortcoming be the treatment time long, surface brittleness is big; The fifties has been developed salt bath tufftride technology, and is respond well, but salt bath and waste residue toxicity are big, serious environment pollution; The sixties are oozed technology altogether at European, U.S. exploitation gas N-C, claim the gas soft nitriding technology again, and China has also carried out this Study on Technology subsequently, has developed the multiple gases soft-nitriding process, and is applied to produce.Conventional nitrogenize and tufftride can obviously improve the wear resistance and the anti-fatigue ability of steel-iron components, but the erosion resistance ability are not strong.In order to improve the corrosion resistance of iron and steel, over nearly 15 years, competitively develop various corrosion-resisting technics researchs both at home and abroad, for example carry out N-C earlier and ooze altogether, in Oxidant, carry out oxide treatment subsequently; Or adopt QPQ technology, after promptly elder generation carried out tufftride in salt bath, mechanical polishing or grinding were carried out in direct quenching in a kind of oxidisability salt more subsequently, immerse oxidation in 400 ℃ of left and right sides oxidisability salt baths at last again; This processing method also can be carried out in nitempering furnace, claims that this is a Ni+rofecs technology.Though these technologies can obviously be improved the corrosion-resistant energy, technology is many than general labourer's preface, and the QPQ processing method also has certain influence to environmental protection.
Summary of the invention:
The object of the present invention is to provide a kind of technological operation easy, nuisanceless, with short production cycle, can obviously improve ferrous material and workpiece surface hardness, make it have the dual-phase anticorrosion processing process of high Corrosion Protection.
The objective of the invention is to realize: the dual-phase anticorrosion method of a kind of ferrous material and workpiece by the enforcement following technical proposals, in regular turn by logical ammonia heating process, multiple gases insulation treatment process, and nitrogen cooling treatment process is formed, with the object primary treatment success that is enclosed in the nitempering furnace, it is characterized in that: described multiple gases insulation treatment process, be meant when furnace temperature is 200 ℃, feeding ammonia is warming up to about 585 ℃, simultaneously in stove, feed ammonia with 120 liters/minute flows, three kinds of gases of carbon dioxide gas and oxygen, the proportional of three kinds of gas volume feedings is 1: 0.05～0.20: 0.02～0.15, under this temperature, keep three kinds of gases simultaneously to 2～5 hours treatment process of object effect, described nitrogen cooling treatment process, be meant that three kinds of gases are after handling 2～5 hours to object under 585 ℃ of left and right sides constant temperature, close three kinds of gases, in stove, feed nitrogen and cool off, reduce to the operation that 550 ℃ of products can be come out of the stove until furnace temperature.
Logical ammonia heating process of the present invention is meant when furnace temperature reaches 200 ℃, feeds ammonia in stove, heats the operation when furnace temperature reaches 585 ℃ of left and right sides.
The invention has the advantages that: technological operation is easy, entire treatment technology is all once finished in nitempering furnace, and the production time has only several hours, than 25～30 hours production cycle much shorter of conventional nitrogenize, and nuisanceless; With the product of this art breading, have good corrosion-resistant, resistance of oxidation, and obviously improved the tensile strength and the fatigue strength of product.
Description of drawings
The present invention provides processing technological flow figure
Embodiment
With pending object pack into the sealing nitempering furnace in, after furnace temperature being heated to (200 ℃ ± 10 ℃), feed ammonia, when furnace temperature rises to specified temperature (585 ℃ ± 20 ℃) again, ammonia, carbon dioxide, three kinds of gases of oxygen by a certain percentage (1: 0.05～0.20: 0.02～0.15), feed in the stove simultaneously with 120 liters/minute flow, and be incubated 3 hours, close three kinds of gases then, feed nitrogen separately, cool to 550 ℃, product can be come out of the stove.This technology is to adopt novel mixed gas and extraordinary air supply controller, one step completed gas N-C blends oxidation bonded treatment process altogether in nitempering furnace, test shows: forming thickness at article surface is sublayer and the Fc that 22-30 μ m is made up of the oxide compound of iron
3O
4+ ε phase Fc
2-3The protective film that (N, C) forms, the former produces the coherence hardening effect, obviously improves surface hardness, effectively improves wear-resisting, the anti-bonding property of object; The latter has significant corrosion resistance, and its salt-fog test shows: just rust spot occurred in 300-500 hour and rust staining do not occur, and routine is only by Fc
3O
4The protective layer that film is formed, salt-fog test had only 3-8 hour rust staining just to occur, compared down antiseptic property and improved greatly.
Claims (1)
- The dual-phase anticorrosion processing process of a kind of ferrous material and workpiece, in regular turn by logical ammonia heating process, multiple gases insulation treatment process, and nitrogen cooling treatment process is formed, with the object primary treatment success that is sealed in the nitempering furnace, it is characterized in that: described multiple gases insulation treatment process, be meant when furnace temperature is 200 ℃, feed ammonia and be warming up to 585 ℃ ± 20 ℃, in stove, feed ammonia with 120 liters/minute flows, three kinds of gases of carbon dioxide gas and oxygen, the volume ratio amount of three kinds of gas feedings is 1: 0.05～0.20: 0.02～0.15, under this temperature, keep three kinds of gases simultaneously to 2～5 hours treatment process of object effect, described nitrogen cooling treatment process, be meant that three kinds of gases are under 585 ℃ ± 20 ℃ constant temperature, after object handled 2～5 hours, close three kinds of gases, in stove, feed nitrogen and cool off, reduce to the operation that 550 ℃ of products can be come out of the stove until furnace temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129198 CN1116436C (en) | 2001-12-17 | 2001-12-17 | Biphase composite anti-corrosion treatment method for ferrous metal material and workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129198 CN1116436C (en) | 2001-12-17 | 2001-12-17 | Biphase composite anti-corrosion treatment method for ferrous metal material and workpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1369571A CN1369571A (en) | 2002-09-18 |
| CN1116436C true CN1116436C (en) | 2003-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01129198 Expired - Fee Related CN1116436C (en) | 2001-12-17 | 2001-12-17 | Biphase composite anti-corrosion treatment method for ferrous metal material and workpiece |
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| Country | Link |
|---|---|
| CN (1) | CN1116436C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100584990C (en) * | 2007-11-01 | 2010-01-27 | 宋广山 | The making method of high-antisepsis stone material fastener composite layer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007197812A (en) * | 2005-12-28 | 2007-08-09 | Honda Motor Co Ltd | Soft-nitrided non-heat-treated steel member |
| CN102345087A (en) * | 2011-06-17 | 2012-02-08 | 范犇 | Nanometer radiation treatment device for metal anticorrosion |
-
2001
- 2001-12-17 CN CN 01129198 patent/CN1116436C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100584990C (en) * | 2007-11-01 | 2010-01-27 | 宋广山 | The making method of high-antisepsis stone material fastener composite layer |
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| Publication number | Publication date |
|---|---|
| CN1369571A (en) | 2002-09-18 |
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