CN108823362A - The heat treatment method of 20Cr13 stainless steel - Google Patents
The heat treatment method of 20Cr13 stainless steel Download PDFInfo
- Publication number
- CN108823362A CN108823362A CN201810844549.7A CN201810844549A CN108823362A CN 108823362 A CN108823362 A CN 108823362A CN 201810844549 A CN201810844549 A CN 201810844549A CN 108823362 A CN108823362 A CN 108823362A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- heat treatment
- treatment method
- salt spray
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a kind of heat treatment methods of 20Cr13 stainless steel, belong to stainless steel hot processing technology field.Present invention solves the technical problem that be existing 20Cr13 stainless steel salt spray corrosion resistance it is poor, it is difficult to meet user requirement the rustless evaluation index of neutral salt spray test 72h.The step of this method is a, quenching：By 20Cr13 stainless steel hot-rolling bar in 850~1050 DEG C of 30~90min of heat preservation, cooling；B, it is tempered：The 20Cr13 stainless steel that step a is handled is in 300~400 DEG C of 30~90min of heat preservation, cooling；C, it post-processes：It is polished after the 20Cr13 stainless steel that step b is handled is cooled down, Passivation Treatment.The salt spray corrosion resistance of 20Cr13 stainless steel can be improved in the method for the present invention, is tested by GB/T10125 standard Neutral salt spray test, and 20Cr13 stainless steel can achieve 168h non-corrosive.
Description
Technical field
The invention belongs to stainless steel hot processing technology fields, and in particular to a kind of heat treatment method of 20Cr13 stainless steel.
Background technique
Salt is one of compound generally existing on the earth, and salinity forms salt fog, salt air corrosion in conjunction with wet air
Be it is a kind of it is common there is destructive atmospheric corrosion, the chloride ion activity as contained in salt fog is strong, has to metal protective film
There is a penetration, chloride ion penetrates the oxide layer of metal surface and electrochemical reaction occurs for protective layer and metal inside, can be to gold
Belong to material to cause to corrode.
Stainless steel household electrical appliance will receive the influence of salt air corrosion because of the marine transportation of use environment or components, shorten the longevity
Life, therefore the salt spray corrosion resistance that stainless steel household electrical appliances need to have certain.But the common 20Cr13 of household electrical appliance is not at present
Steel material salt spray corrosion resistance of becoming rusty is poor, it is difficult to meet the 10125 rustless requirement of standard Neutral salt spray test 72h of GB/T.
Summary of the invention
The technical problem to be solved by the present invention is to the salt spray corrosion resistance of existing 20Cr13 stainless steel material is poor, it is difficult to
Meet the rustless requirement of national standard neutral salt spray test 72h.
The present invention is to solve its technical problem the technical solution adopted is that providing a kind of stainless Heat-Treatment of Steel of 20Cr13
Method.This approach includes the following steps：
A, it quenches：By 20Cr13 stainless steel hot-rolling bar in 850-1050 DEG C of heat preservation 30-90min, it is cooled to room temperature；
B, it is tempered：The 20Cr13 stainless steel that step a is handled is cooled to room temperature in 300-400 DEG C of heat preservation 30-90min；
C, it post-processes：It is polished after the 20Cr13 stainless steel that step b is handled is cooled down, Passivation Treatment.
Wherein, cold after the 20Cr13 stainless steel heating in step a in the heat treatment method of above-mentioned 20Cr13 stainless steel
But mode is water cooling.
Wherein, cold after the 20Cr13 stainless steel heating in step b in the heat treatment method of above-mentioned 20Cr13 stainless steel
But mode is air-cooled.
Wherein, in the heat treatment method of above-mentioned 20Cr13 stainless steel, in step c, the polishing treatment control 20Cr13 is not
The surface roughness Ra of rust steel<0.5μm.
Wherein, in the heat treatment method of above-mentioned 20Cr13 stainless steel, in step c, the solution that the Passivation Treatment uses is
Mass fraction is the nitric acid of 10-30%.
Wherein, in the heat treatment method of above-mentioned 20Cr13 stainless steel, in step c, the temperature of the Passivation Treatment is 50-60
DEG C, the processing time is 10-30min.
The beneficial effects of the invention are as follows：
The present invention provides a kind of heat treatment methods of 20Cr13 stainless steel, and the method for the present invention at 850-1050 DEG C by quenching
Fire processing effectively controls the chromium content in stainless steel material matrix, reduces stainless steel in 300-400 DEG C of progress tempering
Quenching stress and brittleness, avoid the carbide containing chromium from being largely precipitated, improve 20Cr13 stainless steel salt spray corrosion resistance.It throws
Stainless steel material after light processing shows that roughness is substantially reduced, and further improves its corrosion resistance.It is last passivated
Processing makes stainless steel surface form passivating film, further prevents metal to contact with outside corrosive deposit, it is stainless to improve 20Cr13
The chemical stability of Steel material.The method of the present invention can reach 168h non-corrosive by salt spray test, meet GB/T10125 standard
The rustless requirement of neutral salt spray test 72h.
Specific embodiment
Salt spray corrosion resistance based on existing 20Cr13 stainless steel material is poor, it is difficult to meet national standard neutral salt spray
Test the rustless requirement of 72h.Inventors discovered through research that temperature is controlled at 300~400 DEG C during tempering
Obtained 20Cr13 stainless steel salt spray corrosion resistance significantly improves, and by salt spray test, 20Cr13 stainless steel can reach 168h
Non-corrosive.
The invention discloses a kind of heat treatment methods of 20Cr13 stainless steel.This approach includes the following steps：
A, it quenches：By 20Cr13 stainless steel hot-rolling bar in 850-1050 DEG C of heat preservation 30-90min, it is cooled to room temperature；
B, it is tempered：The 20Cr13 stainless steel that step a is handled is cooled to room temperature in 300-400 DEG C of heat preservation 30-90min；
C, it post-processes：It is polished after the 20Cr13 stainless steel that step b is handled is cooled down, Passivation Treatment.
Wherein, in the heat treatment method of above-mentioned 20Cr13 stainless steel, by 20Cr13 stainless steel hot-rolling bar in 850-1050
DEG C heat preservation 30-90min dissolves chromium carbide, be dissolved in matrix state chromium than regular meeting relative increase, to make
Chromium is evenly into stainless steel material tissue.
Wherein, in the heat treatment method of above-mentioned 20Cr13 stainless steel, by 20Cr13 stainless steel in 300-400 DEG C of heat preservation 30-
90min can reduce the quenching stress and brittleness of stainless steel, while can inhibit the precipitation of carbide, avoid matrix and lack
Chromium.Chromium in stainless steel in the form of solid solution and carbide exist, due to corrosion resistance of the steel in corrosive medium with
The increase of chromium content in steel and increase, wherein chromium containing carbide, which has the corrosion resistance of stainless steel, to be seriously affected, in steel
It need to guarantee that there is a certain amount of chromium, the carbide containing chromium, which is largely precipitated, can be such that chromium content in matrix reduces, and return using 300-400 DEG C
Fire can effectively avoid the carbide containing chromium and largely be precipitated, while can guarantee that a large amount of chromiums are maintained in solid solution, it is ensured that
Effective chromium content in matrix, improves the corrosion resistance of stainless steel material.
Wherein, cold after the 20Cr13 stainless steel heating in step a in the heat treatment method of above-mentioned 20Cr13 stainless steel
But mode is water cooling.
Wherein, cold after the 20Cr13 stainless steel heating in step b in the heat treatment method of above-mentioned 20Cr13 stainless steel
But mode is air-cooled.
Wherein, in the heat treatment method of above-mentioned 20Cr13 stainless steel, show roughness to reduce stainless steel, improve matrix
20Cr13 stainless steel is shown that roughness is controlled in Ra by salt spray corrosion resistance<0.5μm.
Wherein, in the heat treatment method of above-mentioned 20Cr13 stainless steel, the solution that the Passivation Treatment uses is mass fraction
For the nitric acid of 10-30%.In addition to this it is possible to be passivated processing using nitric acid+hydrofluoric acid or alkaline passivation liquid.
Wherein, in the heat treatment method of above-mentioned 20Cr13 stainless steel, the temperature of the Passivation Treatment is 50-60 DEG C, processing
Time 10-30min.Nitric acid solution is added, processing is passivated to 20Cr13 stainless steel, makes stainless steel watch open-birth at passivating film, resistance
The only progress of material anodic process, improves the chemical stability of metal.
The present invention is explained in detail below in conjunction with specific embodiments.
Embodiment 1
20Cr13 stainless steel hot-rolling bar is quenched, the temperature of quenching is 880 DEG C, after heating 30min, water cooling
To room temperature, after cooling 20Cr13 stainless steel is air-cooled to room temperature after 350 DEG C of heat preservation 60min, is processed by shot blasting after cooling,
20Cr13 stainless steel shows that roughness Ra is 0.4 μm, and it is 10% that mass fraction is then added into 20Cr13 stainless steel
HNO3Solution is after 55 DEG C of Passivation Treatment 20min, and GB/T10125 carries out neutral salt spray test according to national standards, and 20Cr13 is not
Become rusty Steel material 168h non-corrosive.
Embodiment 2
20Cr13 stainless steel hot-rolling bar is quenched, the temperature of quenching is 1050 DEG C, after heating 60min, water
It is cooled to room temperature, after cooling 20Cr13 stainless steel is air-cooled to room temperature after 320 DEG C of heat preservation 90min, is processed by shot blasting after cooling,
20Cr13 stainless steel shows that roughness Ra is 0.4 μm, and it is 30% that mass fraction is then added into 20Cr13 stainless steel
HNO3Solution is after 60 DEG C of Passivation Treatment 30min, and GB/T10125 carries out neutral salt spray test according to national standards, and 20Cr13 is not
Become rusty Steel material 168h non-corrosive.
Embodiment 3
20Cr13 stainless steel hot-rolling bar is quenched, the temperature of quenching is 930 DEG C, after heating 90min, water cooling
To room temperature, after cooling 20Cr13 stainless steel is air-cooled to room temperature after 380 DEG C of heat preservation 30min, is processed by shot blasting after cooling,
20Cr13 stainless steel shows that roughness Ra is 0.3 μm, and it is 20% that mass fraction is then added into 20Cr13 stainless steel
HNO3Solution is after 50 DEG C of Passivation Treatment 10min, and GB/T10125 carries out neutral salt spray test according to national standards, and 20Cr13 is not
Become rusty Steel material 168h non-corrosive.
By embodiment 1-3 it is found that the salt fog resistance of the 20Cr13 stainless steel handled using the method for the present invention
It can significantly improve, GB/T10125 carries out neutral salt spray test according to national standards, and 20Cr13 stainless steel can reach 168h and not give birth to
Rust.
Claims (6)
1.20Cr13 the heat treatment method of stainless steel, it is characterised in that include the following steps：
A, it quenches：By 20Cr13 stainless steel hot-rolling bar in 850-1050 DEG C of heat preservation 30-90min, it is cooled to room temperature；
B, it is tempered：The 20Cr13 stainless steel that step a is handled is cooled to room temperature in 300-400 DEG C of heat preservation 30-90min；
C, it post-processes：It is polished after the 20Cr13 stainless steel that step b is handled is cooled down, Passivation Treatment.
2. the heat treatment method of 20Cr13 stainless steel according to claim 1, it is characterised in that：It is described in step a
The type of cooling is water cooling after the heating of 20Cr13 stainless steel.
3. according to claim 1 or the heat treatment method of 2 described in any item 20Cr13 stainless steels, it is characterised in that：Step b
In, the type of cooling is air-cooled after the 20Cr13 stainless steel heating.
4. the heat treatment method of 20Cr13 stainless steel according to claim 1-3, it is characterised in that：In step c,
The surface roughness Ra of the polishing treatment control 20Cr13 stainless steel<0.5μm.
5. the heat treatment method of 20Cr13 stainless steel according to claim 1-4, it is characterised in that：In step c,
The solution that the Passivation Treatment uses is mass fraction for the nitric acid of 10-30%.
6. the heat treatment method of 20Cr13 stainless steel according to claim 1-5, it is characterised in that：The passivation
The temperature of processing is 50-60 DEG C, and the processing time is 10-30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810844549.7A CN108823362A (en) | 2018-07-27 | 2018-07-27 | The heat treatment method of 20Cr13 stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810844549.7A CN108823362A (en) | 2018-07-27 | 2018-07-27 | The heat treatment method of 20Cr13 stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108823362A true CN108823362A (en) | 2018-11-16 |
Family
ID=64151986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810844549.7A Pending CN108823362A (en) | 2018-07-27 | 2018-07-27 | The heat treatment method of 20Cr13 stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108823362A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386525A (en) * | 2013-07-22 | 2013-11-13 | 上海医疗器械（集团）有限公司手术器械厂 | Vacuum brazing and thermal treatment composite process for stainless steel surgical instrument and application of process |
| CN105296877A (en) * | 2015-09-25 | 2016-02-03 | 宝钢不锈钢有限公司 | Martensitic stainless steel for building structure fastener and manufacturing method thereof |
| CN105745338A (en) * | 2013-11-13 | 2016-07-06 | 日本精工株式会社 | Machine part production method using martensitic stainless steel, and rotating device, rolling bearing, and rolling bearing unit |
| CN105969945A (en) * | 2016-06-02 | 2016-09-28 | 溧阳市金昆锻压有限公司 | Quenching and high temperature tempering process of 20Cr13 middle piece for pump |
| CN107779778A (en) * | 2017-09-22 | 2018-03-09 | 钢铁研究总院 | A kind of rail fastener stainless steel spring material |
| CN108031779A (en) * | 2017-11-29 | 2018-05-15 | 无锡透平叶片有限公司 | A kind of turbine blade and preparation method thereof |
-
2018
- 2018-07-27 CN CN201810844549.7A patent/CN108823362A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386525A (en) * | 2013-07-22 | 2013-11-13 | 上海医疗器械（集团）有限公司手术器械厂 | Vacuum brazing and thermal treatment composite process for stainless steel surgical instrument and application of process |
| CN105745338A (en) * | 2013-11-13 | 2016-07-06 | 日本精工株式会社 | Machine part production method using martensitic stainless steel, and rotating device, rolling bearing, and rolling bearing unit |
| CN105296877A (en) * | 2015-09-25 | 2016-02-03 | 宝钢不锈钢有限公司 | Martensitic stainless steel for building structure fastener and manufacturing method thereof |
| CN105969945A (en) * | 2016-06-02 | 2016-09-28 | 溧阳市金昆锻压有限公司 | Quenching and high temperature tempering process of 20Cr13 middle piece for pump |
| CN107779778A (en) * | 2017-09-22 | 2018-03-09 | 钢铁研究总院 | A kind of rail fastener stainless steel spring material |
| CN108031779A (en) * | 2017-11-29 | 2018-05-15 | 无锡透平叶片有限公司 | A kind of turbine blade and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 胡隆伟，叶文君 主编: "《紧固件材料手册》", 31 December 2014, 北京：中国宇航出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018040536A1 (en) | Method for preparing composite hot-galvanized steel wire | |
| CN104988402A (en) | Galvanized nut machining technology | |
| CN102586773A (en) | Passivating treatment method for stainless steel rare earth conversion coatings | |
| CN106637025A (en) | Modified zinc plating treatment process for steel | |
| CN106544488A (en) | Bolt manufacturing method | |
| CN104630647A (en) | Preparation method of high-strength hot galvanizing Q&P steel | |
| WO2020103895A1 (en) | High-strength corrosion-resistant sucker rod and preparation process therefor | |
| CN106399925A (en) | Steel surface modification structure formed through zinc-nickel infiltrated layer and preparation method for steel surface modification structure | |
| CN105483761A (en) | Process for improving intergranular corrosion resistance of 316 stainless steel | |
| CN107904487B (en) | A kind of polynary chrome molybdenum carbon dioxide corrosion resistant oil well pipe and its manufacturing method | |
| CN108823362A (en) | The heat treatment method of 20Cr13 stainless steel | |
| CN105441816B (en) | Steel for sucker rod and manufacturing method of sucker rod | |
| CN111638113B (en) | Precipitation strengthening martensite stainless steel prior austenite grain boundary corrosion method | |
| CN103308514B (en) | A kind of method adopting annealed state normal temperature etch testing tool steel carbonide unevenness | |
| CN102115807A (en) | Rust inhibitor for thread steel quenching | |
| CN104250733A (en) | Cold-rolled plate surface passivation liquid | |
| CN107267975A (en) | A kind of method for improving common iron rustless property | |
| US2368955A (en) | Treatment of manganese steel | |
| WO2022199342A1 (en) | Surface matting process for low-manganese-content steel component of electric power iron tower and matte iron tower | |
| CN105256121B (en) | A kind of heat treatment method of raising 22Cr type stainless steel forgings low-temperature flexibilities and decay resistance | |
| CN101892362A (en) | Hardening and tempering method in pump body manufacturing | |
| CN106947939A (en) | A kind of method that thermal diffusion prepares anti-corrosion reinforcing bar | |
| CN108977633A (en) | A kind of steel casting quenching medium of safety and environmental protection | |
| US2390402A (en) | Method of passivating stainless steels | |
| CN106319169A (en) | Quenching agent for alloy steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181116 |
|
| RJ01 | Rejection of invention patent application after publication |