CN107916392A - A kind of method for treating stainless steel surfaces - Google Patents
A kind of method for treating stainless steel surfaces Download PDFInfo
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- CN107916392A CN107916392A CN201711201413.6A CN201711201413A CN107916392A CN 107916392 A CN107916392 A CN 107916392A CN 201711201413 A CN201711201413 A CN 201711201413A CN 107916392 A CN107916392 A CN 107916392A
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- stainless steel
- source electrode
- steel surfaces
- oozing
- treating stainless
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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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
- C23C10/08—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases only one element being diffused
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- 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)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a kind of method for treating stainless steel surfaces, include the following steps：Using Zr plates as source electrode, source electrode polishing is cleaned out, base material uses 304 austenitic stainless steels, carry out oozing zirconium processing using multifunctional ion chemical heat-treatment furnace, 20 30mm of die opening, 30 35Pa of argon gas operating air pressure, 1,000 1060 DEG C of holding temperature, 300 350V of voltage difference between source electrode and cathode, 4 5h of soaking time；Sample cools to room temperature with the furnace.The present invention is simple to operate, environment will not be polluted；After oozing zirconium processing, the hardness of specimen surface improves about 3 times, and hardness from outward appearance to inner essence gradually reduces, distribution gradient；In 65 μm of stainless steel surface formation, the infiltration layer of even compact；The relatively corrosive speed of stainless steel substrate is ooze Zr alloy-layers 3.15 times, 6.23 times, 3.12 times respectively；Stainless steel surface corrosion is more serious, and slight local corrosion only occurs in layer surface, it is seen that the corrosion resistance of stainless steel makes moderate progress after oozing zirconium processing.
Description
Technical field
The present invention relates to a kind of method for treating stainless steel surfaces, belong to field of metal surface treatment.
Background technology
Stainless steel has excellent corrosion resistance, weldability and comprehensive mechanical property, in aerospace, chemical industry, atomic energy etc.
Extensive use in industry, but its case hardness is relatively low, and the corrosion resisting property in specific corrosive environment needs to be further improved.
Method common at present is that surface attaches one layer of wear-resisting corrosion layer, but uses such scheme service life very short, thus can
The hardened stainless steel in a manner of being considered as surface infiltration layer.
The content of the invention
In view of the above-mentioned problems of the prior art, the object of the present invention is to provide it is a kind of it is simple to operate, will not be right
The method for treating stainless steel surfaces that environment pollutes, stainless steel surface after processing have good corrosion resistance and higher
Hardness.
To achieve the above object, the technical solution adopted by the present invention is：A kind of method for treating stainless steel surfaces, including it is as follows
Step：
(1) source electrode polishing is cleaned out, base material uses 304 austenitic stainless steels, shove charge as source electrode using Zr plates
Before, by the sample successively liquid honing through different model, and polished with polishing machine, then totally and dried with ultrasonic cleaning；
(2) carry out oozing zirconium processing using multifunctional ion chemical heat-treatment furnace, technological parameter is:Die opening 20-30mm, argon
Gas operating air pressure 30-35Pa, 1000-1060 DEG C of holding temperature, the voltage difference 300-350V between source electrode and cathode, soaking time
4-5h；
(3) sample cools to room temperature with the furnace.
As a preferable scheme, the heat-treatment furnace model is DGLT-15 types.
As a preferable scheme, the Zr plates purity 99.99%.
As a preferable scheme, step (2) the die opening 20mm, argon gas operating air pressure 30Pa, holding temperature
1000℃。
As a preferable scheme, the voltage difference 350V between the source electrode and cathode of the step (2), soaking time
4h。
The present invention is simple to operate, environment will not be polluted；After oozing zirconium processing, the hardness of specimen surface carries
About 3 times high, hardness from outward appearance to inner essence gradually reduces, distribution gradient；Stainless steel surface forms 65 μm, even compact oozes
Layer；The relatively corrosive speed of stainless steel substrate is ooze Zr alloy-layers 3.15 times, 6.23 times, 3.12 times respectively；Stainless steel surface
Corrode more serious, and slight local corrosion only occurs in layer surface, it is seen that the corrosion resistance of stainless steel has after oozing zirconium processing
Improved.
Embodiment
The present invention is described in further detail with reference to embodiment.
Embodiment 1
Method for treating stainless steel surfaces, includes the following steps：
(1) source electrode polishing is cleaned out, base material uses 304 austenitic stainless steels, shove charge as source electrode using Zr plates
Before, by the sample successively liquid honing through different model, and polished with polishing machine, then totally and dried with ultrasonic cleaning；
(2) carry out oozing zirconium processing using multifunctional ion chemical heat-treatment furnace, technological parameter is:Die opening 20mm, argon gas
Operating air pressure 30Pa, 1000 DEG C of holding temperature, the voltage difference 300V between source electrode and cathode, soaking time 4h；
(3) sample cools to room temperature with the furnace.
Sample hardness, load 50g, load time 10s are detected with HV1000 type microhardnesses instrument.Using potentiostatic method and electricity
Chemical measurement instrument carries out electrochemical corrosion test, and sample is clean with acetone, distilled water flushing successively, and sample work area is
1cm2, remaining non-working surface seals with paraffin.Then sample is immersed in corrosive liquid, it is electric using saturated calomel electrode as reference
Pole, platinum electrode are connected, Luggin capillary is away from Electrode 1- as auxiliary electrode between reference electrode and Electrode with salt bridge
2mm, cathode and anode polarization are carried out after 10min is stablized, finally calculates corrosion rate.
Through measurement, the hardness on surface is 1530HV0.05, hence it is evident that more than the case hardness of stainless steel substrate
(350HV0.05), it is seen then that after oozing zirconium processing, the hardness of specimen surface improves about 3 times, and hardness from outward appearance to inner essence gradually drops
It is low, distribution gradient.
In 65 μm of stainless steel surface formation, the infiltration layer of even compact；The relatively corrosive speed of stainless steel substrate is oozed respectively
3.15 times, 6.23 times, 3.12 times of Zr alloy-layers；Stainless steel surface corrosion it is more serious, and layer surface only occur it is slight
Local corrosion, it is seen that the corrosion resistance of stainless steel makes moderate progress after oozing zirconium processing.
Embodiment 2
Method for treating stainless steel surfaces, includes the following steps：
(1) source electrode polishing is cleaned out, base material uses 304 austenitic stainless steels, shove charge as source electrode using Zr plates
Before, by the sample successively liquid honing through different model, and polished with polishing machine, then totally and dried with ultrasonic cleaning；
(2) carry out oozing zirconium processing using multifunctional ion chemical heat-treatment furnace, technological parameter is:Die opening 30mm, argon gas
Operating air pressure 35Pa, 1060 DEG C of holding temperature, the voltage difference 350V between source electrode and cathode, soaking time 5h；
(3) sample cools to room temperature with the furnace.
Material property prepared by the embodiment is similar to Example 1.
Embodiment 3
Method for treating stainless steel surfaces, includes the following steps：
(1) source electrode polishing is cleaned out, base material uses 304 austenitic stainless steels, shove charge as source electrode using Zr plates
Before, by the sample successively liquid honing through different model, and polished with polishing machine, then totally and dried with ultrasonic cleaning；
(2) carry out oozing zirconium processing using multifunctional ion chemical heat-treatment furnace, technological parameter is:Die opening 20mm, argon gas
Operating air pressure 30Pa, 1000 DEG C of holding temperature, the voltage difference 350V between source electrode and cathode, soaking time 4h；
(3) sample cools to room temperature with the furnace.
Material property prepared by the embodiment is similar to Example 1.
Claims (5)
1. a kind of method for treating stainless steel surfaces, it is characterised in that include the following steps：
(1) source electrode polishing is cleaned out, base material uses 304 austenitic stainless steels, will before shove charge as source electrode using Zr plates
The sample liquid honing through different model, and being polished with polishing machine successively, then totally and dried with ultrasonic cleaning；
(2) carry out oozing zirconium processing using multifunctional ion chemical heat-treatment furnace, technological parameter is:Die opening 20-30mm, argon gas work
Make air pressure 30-35Pa, 1000-1060 DEG C of holding temperature, the voltage difference 300-350V between source electrode and cathode, soaking time 4-
5h；
(3) sample cools to room temperature with the furnace.
2. a kind of method for treating stainless steel surfaces according to claim 1, it is characterised in that the heat-treatment furnace model is
DGLT-15 types.
A kind of 3. method for treating stainless steel surfaces according to claim 1, it is characterised in that the Zr plates purity
99.99%.
A kind of 4. method for treating stainless steel surfaces according to claim 1, it is characterised in that step (2) die opening
20mm, argon gas operating air pressure 30Pa, 1000 DEG C of holding temperature.
A kind of 5. method for treating stainless steel surfaces according to claim 1, it is characterised in that the source electrode of the step (2)
Voltage difference 350V between cathode, soaking time 4h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711201413.6A CN107916392A (en) | 2017-11-27 | 2017-11-27 | A kind of method for treating stainless steel surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711201413.6A CN107916392A (en) | 2017-11-27 | 2017-11-27 | A kind of method for treating stainless steel surfaces |
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| Publication Number | Publication Date |
|---|---|
| CN107916392A true CN107916392A (en) | 2018-04-17 |
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ID=61897015
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711201413.6A Withdrawn CN107916392A (en) | 2017-11-27 | 2017-11-27 | A kind of method for treating stainless steel surfaces |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108998697A (en) * | 2018-08-07 | 2018-12-14 | 燕山大学 | A method of zirconium, which is seeped, in middle Zr alloy surface prepares rich modified zirconia layer |
-
2017
- 2017-11-27 CN CN201711201413.6A patent/CN107916392A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108998697A (en) * | 2018-08-07 | 2018-12-14 | 燕山大学 | A method of zirconium, which is seeped, in middle Zr alloy surface prepares rich modified zirconia layer |
| CN108998697B (en) * | 2018-08-07 | 2020-09-11 | 燕山大学 | Method for preparing zirconium-rich modified layer by zirconium infiltration on surface of medium zirconium alloy |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180417 |