CN107904552A - A kind of saline oxide and its technique for the processing of steel material nitriding with post-oxidizsing - Google Patents
A kind of saline oxide and its technique for the processing of steel material nitriding with post-oxidizsing Download PDFInfo
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- CN107904552A CN107904552A CN201711169634.XA CN201711169634A CN107904552A CN 107904552 A CN107904552 A CN 107904552A CN 201711169634 A CN201711169634 A CN 201711169634A CN 107904552 A CN107904552 A CN 107904552A
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- steel material
- oxidizsing
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- nitriding
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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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
- C23C8/58—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions more than one element being applied in more than one step
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The invention discloses a kind of saline oxide and its technique for the processing of steel material nitriding with post-oxidizsing, and the saline oxide of use is made of following compositions and components by weight percentage：KNO315~40%, NaNO35~30%, KOH20~60%, NaOH10~30%.The present invention forms the Fe3O4 oxide-films of densification in product surface, improves the corrosion resistance of product；The oxide-film of formation has relatively low friction coefficient, good self-lubricating function；Noxious material in former nitridation salt can be subjected to oxygenolysis, the technique is had more the feature of environmental protection.
Description
Technical field
The present invention relates to field of metal surface treatment, more particularly to a kind of oxygen for the processing of steel material nitriding with post-oxidizsing
Salt dissolving and its technique.
Background technology
Steel material has a good corrosion resistance, and with good toughness, workability, weldability and heat-resisting
Property, but shortcoming is that hardness, wear resistance, anti-fatigue performance are relatively low.Nitriding is at a certain temperature, makes nitrogen original in certain medium
Son penetrates into the chemical heat treatment process of workpiece surface.It is common to have liquid nitriding, gas nitriding, glow discharge nitriding.To steel material into
Row Nitrizing Treatment, is a kind of effective surface reinforcing method.Liquid nitriding is also known as salt bath nitriding treatment, a kind of metal fused salt surface
Strengthen modification technology.Workpiece is successively handled in two kinds of melting saline solutions of different nature, multiple element is penetrated at the same time
Metal surface, forms the compisite seeping layer being made of several compounds, metal surface is strengthened modification, wearability, corrosion stability
It is greatly improved at the same time with fatigue durability.
Saline oxide is primarily adapted for use in the oxidation processes after nitriding, can form one layer of fine and close black on the surface of nitriding layer
Fe3O4Oxide-film.Sealing process is played to nitriding layer.Improve its corrosion resistance.The oxide layer obtained by the prior art
It is relatively thin, only 0.1~0.5um thickness, and color in black to grey black, and easily there is redness phenomenon.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of saline oxide for the processing of steel material nitriding with post-oxidizsing
And its technique, for deficiency of the prior art, saline oxide formula is adjusted, to improve the oxidability of the salt, is solved
The oxide layer that the prior art is obtained is relatively thin, only 0.1~0.5um thickness, and color in black to grey black, and easily
There is the problem of burnt hair phenomenon.
To reach above-mentioned purpose, technical scheme is as follows：It is a kind of to be used for what steel material nitriding with post-oxidizsing was handled
Saline oxide, the saline oxide is made of following compositions and components by weight percentage：
As a preferred embodiment of the present invention, under the saline oxide molten condition, the quality of potassium ion and sodium ion is dense
Degree is than being 7:3.
As a preferred embodiment of the present invention, in the saline oxide, the KNO3And NaNO3Quality sum be not less than
30%.
One kind is used for steel material nitriding with post-oxidizsing treatment process, using the saline oxide in such scheme, in oxidation furnace
Liquid oxidizing is carried out to steel material, is 280-420 ° in oxidizing temperature, oxidization time 10-45min.
The use of the mass concentration ratio of potassium ion and sodium ion is 7 as a preferred embodiment of the present invention:3 saline oxide,
Liquid oxidizing is carried out to steel material in oxidation furnace, is 280-350 ° in oxidizing temperature, oxidization time 20-30min.
Through the above technical solutions, the beneficial effect of technical solution of the present invention is：Liquid oxidizing temperature of the present invention is low, passes through
The concentration of nitrate ion is adjusted, improves oxidation susceptibility；The ratio of sodium ion and potassium ion is adjusted, the viscosity of salt bath is controlled, makes
Salt bath has good mobility, and oxidation is more uniform, reduces the drag-out of salt.Salt temperature of the present invention is low, and cost is low, uses
Effect is good, and black oxide-film occurs, and oxidation effectiveness is good, even film layer, and thickness is reasonable.The present invention is formed in product surface and caused
Close Fe3O4 oxide-films, improve the corrosion resistance of product；The oxide-film of formation has relatively low friction coefficient, well
Self-lubricating function；Noxious material in former nitridation salt can be subjected to oxygenolysis, the technique is had more the feature of environmental protection.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical solution in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's all other embodiments obtained without creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
A kind of saline oxide for the processing of steel material nitriding with post-oxidizsing, the saline oxide are made of following compositions and by weights
Measure percentage proportioning：
Using the saline oxide in such scheme, liquid oxidizing is carried out to steel material in oxidation furnace, is in oxidizing temperature
350-420 °, oxidization time 10-25min.
The oxide layer color that the present embodiment obtains is aterrimus, oxidated layer thickness position 1.2um.
Embodiment 2
A kind of saline oxide for the processing of steel material nitriding with post-oxidizsing, the saline oxide are made of following compositions and by weights
Measure percentage proportioning：
Using the saline oxide in such scheme, to being 300- in oxidizing temperature for carrying out liquid oxidizing in oxidation furnace
350 °, oxidization time 25-35min.
The oxide layer color that the present embodiment obtains is aterrimus, oxidated layer thickness position 1.0um.
Embodiment 3
A kind of saline oxide for the processing of steel material nitriding with post-oxidizsing, the saline oxide are made of following compositions and by weights
Measure percentage proportioning：
Using the saline oxide in such scheme, liquid oxidizing is carried out to steel material in oxidation furnace, is in oxidizing temperature
280-350 °, oxidization time 25-45min.
The oxide layer color that the present embodiment obtains is aterrimus, oxidated layer thickness position 1.1um.
Embodiment 4
A kind of saline oxide for the processing of steel material nitriding with post-oxidizsing, the saline oxide are made of following compositions and by weights
Measure percentage proportioning：
Wherein, under the saline oxide molten condition, the mass concentration ratio of potassium ion and sodium ion is 7:3.
Using the saline oxide in such scheme, liquid oxidizing is carried out to steel material in oxidation furnace, is in oxidizing temperature
280-350 °, oxidization time 20-30min.
The oxide layer color that the present embodiment obtains is aterrimus, oxidated layer thickness position 1.4um.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
Claims (5)
1. a kind of saline oxide for the processing of steel material nitriding with post-oxidizsing, it is characterised in that the saline oxide is by following compositions
Form simultaneously components by weight percentage：
2. the saline oxide according to claim 1 for the processing of steel material nitriding with post-oxidizsing, it is characterised in that the oxygen
Under salt dissolving molten condition, the mass concentration ratio of potassium ion and sodium ion is 7:3.
3. the saline oxide according to claim 2 for the processing of steel material nitriding with post-oxidizsing, it is characterised in that the oxygen
In salt dissolving, the KNO3And NaNO3Quality sum be not less than 30%.
4. one kind is used for steel material nitriding with post-oxidizsing treatment process, it is characterised in that the oxidation described in usage right requirement 1
Salt, liquid oxidizing is carried out in oxidation furnace to steel material, is 280-420 ° in oxidizing temperature, oxidization time 10-45min.
5. according to claim 4 be used for steel material nitriding with post-oxidizsing treatment process, it is characterised in that uses potassium ion
Mass concentration ratio with sodium ion is 7:3 saline oxide, carries out liquid oxidizing, in oxidizing temperature in oxidation furnace to steel material
For 280-350 °, oxidization time 20-30min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711169634.XA CN107904552A (en) | 2017-11-22 | 2017-11-22 | A kind of saline oxide and its technique for the processing of steel material nitriding with post-oxidizsing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711169634.XA CN107904552A (en) | 2017-11-22 | 2017-11-22 | A kind of saline oxide and its technique for the processing of steel material nitriding with post-oxidizsing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728840A (en) * | 2018-05-24 | 2018-11-02 | 安徽中亚钢结构工程有限公司 | A kind of steel construction piece anti-corrosive treatment method |
| CN109763092A (en) * | 2018-12-24 | 2019-05-17 | 钢铁研究总院 | A kind of surface treatment method enhancing oil gas fracturing unit truck pump housing corrosion-proof wear |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966523A (en) * | 2014-05-12 | 2014-08-06 | 福州大学 | Quench-polish-quench (QPQ) treatment method for super duplex stainless cast steel |
| CN106191761A (en) * | 2016-08-26 | 2016-12-07 | 青岛张氏机械有限公司 | Low temperature salt-bath carbonitriding medium and the application in piston rod surface processes thereof |
-
2017
- 2017-11-22 CN CN201711169634.XA patent/CN107904552A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966523A (en) * | 2014-05-12 | 2014-08-06 | 福州大学 | Quench-polish-quench (QPQ) treatment method for super duplex stainless cast steel |
| CN106191761A (en) * | 2016-08-26 | 2016-12-07 | 青岛张氏机械有限公司 | Low temperature salt-bath carbonitriding medium and the application in piston rod surface processes thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728840A (en) * | 2018-05-24 | 2018-11-02 | 安徽中亚钢结构工程有限公司 | A kind of steel construction piece anti-corrosive treatment method |
| CN109763092A (en) * | 2018-12-24 | 2019-05-17 | 钢铁研究总院 | A kind of surface treatment method enhancing oil gas fracturing unit truck pump housing corrosion-proof wear |
| CN109763092B (en) * | 2018-12-24 | 2020-04-24 | 钢铁研究总院 | Surface treatment method for enhancing corrosion resistance and wear resistance of oil-gas fracturing truck pump body |
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Application publication date: 20180413 |