CN106676244A - Electrified railway flange joint treatment method - Google Patents
Electrified railway flange joint treatment method Download PDFInfo
- Publication number
- CN106676244A CN106676244A CN201710128113.3A CN201710128113A CN106676244A CN 106676244 A CN106676244 A CN 106676244A CN 201710128113 A CN201710128113 A CN 201710128113A CN 106676244 A CN106676244 A CN 106676244A
- Authority
- CN
- China
- Prior art keywords
- electric railway
- bump joint
- borax
- molten salt
- medium
- 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
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/44—Methods of heating in heat-treatment baths
- C21D1/46—Salt baths
-
- 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
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses an electrified railway flange joint treatment method, and belongs to the field of flanges. The electrified railway flange joint treatment method comprises the steps that rough machining and rough grinding are firstly carried out; then fine machining and polishing are carried out; an electrified railway flange joint is then put into a borax molten salt medium to be heated; then the electrified railway flange joint is put into a heat preservation vacuum box for heat preservation; then the electrified railway flange joint is put into a vanadium carbide-containing borax molten salt medium to be heated successively to form a protection film; and finally quenching and tempering are carried out, and re-polishing treatment is carried out during finishing. According to the electrified railway flange joint treatment method, the electrified railway flange joint can be stable and not prone to be broken, meanwhile, the carbon content of metal is reduced, and the surface has certain plasticity and is not prone to cracking.
Description
Technical field
The present invention relates to flange field, more specifically to a kind of electric railway bump joint processing method.
Background technology
Electric railway, also known as electrified railway, are by electric locomotive or EMUs both railroad trains（The fire being generally called
Car）Based on, the railway walked, the traction power of electric railway is electric locomotive, locomotive in itself without the energy, the required energy
There is provided by power supply system of electric traction.
Bump joint is that the part being connected with each other between axle and axle is referred to as, and for the connection between pipe end, is also had used in setting
The standby flange imported and exported, for the connection between two equipment, such as reductor flange, the bump joint in electric railway
Using in extensive range, ring flange and flange gasket such as in contact net, because flange outside is typically not provided with protection device, receive
To adaptability to changes influence and effect of attrition, electric railway bump joint surface easily produces bursts apart, and serious can also cause flange
The fracture of joint, triggers great railway security accident.
Need a kind of electric railway bump joint processing method now, stabilize it is not easy to break, while reduce metal
Carbon content, make surface that there is certain plasticity to be less likely to occur to burst apart.
The content of the invention
1. the technical problem to be solved
For there is a problem of that existing electric railway bump joint surface easily bursts apart in the prior art, the purpose of the present invention exists
In a kind of electric railway bump joint processing method is provided, it can realize stablizing not easy to break, while reducing the carbon of metal
Content, makes surface that there is certain plasticity to be less likely to occur to burst apart.
2. technical scheme
To solve the above problems, the present invention is adopted the following technical scheme that.
A kind of electric railway bump joint processing method, comprises the following steps：
The first step, carries out roughing, and it is roughly ground to electric railway bump joint；
Second step, fining-off is carried out to electric railway bump joint, and it is polished in insulation vacuum tank；
3rd step, the electric railway bump joint after polishing is put into molten salt of borax medium, by the molten salt of borax medium
It is heated to 600 DEG C to 800 DEG C；
4th step, electric railway bump joint is taken out from molten salt of borax medium, to continue to be put into and be incubated 1 in insulation vacuum tank
To 2 hours；
5th step, will add appropriate vanadium carbide to be heated to 1050 to 1150 DEG C in molten salt of borax medium, by insulation vacuum tank
Electric railway bump joint is put into the molten salt of borax medium added with vanadium carbide, is taken after after the diaphragm that surface forms vanadium carbide
Go out to be put into vacuum incubator and be incubated 20 to 30 minutes；
6th step, electric railway bump joint is taken out from vacuum incubator and is put into 1000 DEG C to 1150 DEG C of hardening media
Quenched；
7th step, is tempered after the completion of quenching, and temperature is 300 DEG C to 400 DEG C；
8th step, after the completion of tempering, removes the impurity that electric railway bump joint surface separates out；
9th step, is processed by shot blasting to electric railway bump joint surface again in vacuum tank is incubated；
Roughly ground and polished before the heating of electric railway bump joint, being heated to 600 DEG C in molten salt of borax medium first is arrived
800 DEG C, then 1050 DEG C to 1150 DEG C are heated in the molten salt of borax medium added with vanadium carbide, relatively directly added with vanadium carbide
Molten salt of borax medium in be heated to 1050 DEG C to the 1150 DEG C carbon contents for reducing electric railway bump joint surface, increase can
Plasticity and wearability, prevent protective layer from bursting apart.
Preferably, in the 3rd step and the 4th step, taken after the molten salt of borax medium is heated into 600 DEG C to 800 DEG C
Go out to be put into 1 to 2 hours of insulation in insulation vacuum tank, insulation ratio is incubated energy in molten salt of borax medium in being put into insulation vacuum tank
Workman is effectively reduced in the working time of adverse circumstances, and corrosion of the molten salt of borax medium to workpiece can be reduced.
Preferably, in the 5th step, appropriate vanadium carbide will be added first to be heated to 600 DEG C in molten salt of borax medium is arrived
800 DEG C, the electric railway bump joint being incubated in vacuum tank is put into the molten salt of borax medium added with vanadium carbide, continues to add
The molten salt of borax medium added with vanadium carbide is heated to 700 DEG C to 900 DEG C, is put into by heat point three phases, first stage
20 to 30 minutes are incubated in insulation vacuum tank, second stage continues to be heated to 800 DEG C to 1000 DEG C to it, is put into heat insulating hollow case
Middle insulation 20 to 30 minutes, the phase III is heated to 1050 DEG C to 1150 DEG C to it, then takes out to be put into incubator being incubated 20
By 30 minutes, heating point three phases, comparing to directly heat to 1050 DEG C to 1150 DEG C can effectively improve electric railway method
The drag of blue joint.
Preferably, in the first step and the 8th step, electric railway bump joint size is measured using survey tool, it is right
The electric railway bump joint that size changes carries out scrapping treatment, and internal proterties is unstable before can in processes eliminating roughing
Fixed electric railway bump joint, improves qualification rate.
3. beneficial effect
Compared to prior art, the advantage of the invention is that：
（1）This programme is roughly ground and is polished by before electric railway bump joint is heated, first in molten salt of borax medium
600 DEG C to 800 DEG C are heated to, then 1050 DEG C to 1150 DEG C are heated in the molten salt of borax medium added with vanadium carbide, relatively directly
It is connected in the molten salt of borax medium added with vanadium carbide and is heated to 1050 DEG C to 1150 DEG C reduction electric railway bump joint surfaces
Carbon content, increase plasticity and wearability, prevent protective layer from bursting apart.
（2）In 3rd step and the 4th step, the molten salt of borax medium is heated to being taken out after 600 DEG C to 800 DEG C being put into guarantor
1 to 2 hours are incubated in warm vacuum tank, insulation ratio is incubated in molten salt of borax medium and can effectively reduce in being put into insulation vacuum tank
Workman can reduce corrosion of the molten salt of borax medium to workpiece in the working time of adverse circumstances.
（3）In 5th step, appropriate vanadium carbide will be added to be heated to 600 DEG C to 800 DEG C in molten salt of borax medium first, will protected
Electric railway bump joint in warm vacuum tank is put into the molten salt of borax medium added with vanadium carbide, continues to heat point three ranks
The molten salt of borax medium added with vanadium carbide is heated to 700 DEG C to 900 DEG C, is put into insulation vacuum tank by section, first stage
Middle insulation 20 to 30 minutes, second stage continues to be heated to 800 DEG C to 1000 DEG C to it, and insulation 20 is arrived in being put into heat insulating hollow case
30 minutes, the phase III was heated to 1050 DEG C to 1150 DEG C to it, then took out to be put into incubator being incubated 20 to 30 minutes, plus
Heat point three phases, comparing to directly heat to 1050 DEG C to 1150 DEG C can effectively improve the anti-of electric railway bump joint
Power.
（4）In the first step and the 8th step, electric railway bump joint size is measured using survey tool, size is changed
Electric railway bump joint carry out scrapping treatment, can in processes eliminate the electric of internal Character instability before roughing
Change railway bump joint, improve qualification rate.
Specific embodiment
Below in conjunction with the embodiment of the present invention；Technical scheme in the embodiment of the present invention is clearly and completely described；
Obviously；Described embodiment is only a part of embodiment of the invention；Rather than whole embodiments.Based in the present invention
Embodiment；The every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made；All
Belong to the scope of protection of the invention.
Embodiment 1：
A kind of electric railway bump joint processing method, comprises the following steps：
The first step, carries out roughing, and it is roughly ground to electric railway bump joint；
Second step, fining-off is carried out to electric railway bump joint, and it is polished in insulation vacuum tank；
3rd step, the electric railway bump joint after polishing is put into molten salt of borax medium, by the molten salt of borax medium
It is heated to 800 DEG C；
4th step, electric railway bump joint is taken out from molten salt of borax medium, and insulation 2 is small in being put into insulation vacuum tank
When, workman is effectively reduced in the working time of adverse circumstances, and can reduce corrosion of the molten salt of borax medium to workpiece；
5th step, will add appropriate vanadium carbide three phases to heat in molten salt of borax medium, first stage will be described added with carbon
Change vanadium molten salt of borax medium be heated to 700 DEG C to 900 DEG C, be put into insulation vacuum tank in be incubated 20 to 30 minutes, second stage
It is continued to be heated to 800 DEG C to 1000 DEG C, is put into heat insulating hollow case and is incubated 20 to 30 minutes, the phase III is heated to it
1050 DEG C to 1150 DEG C, then take out to be put into incubator being incubated 20 to 30 minutes, the electric railway in vacuum tank will be incubated
Bump joint is put into the molten salt of borax medium added with vanadium carbide, and vacuum is put into after being taken out after the diaphragm that surface forms vanadium carbide
20 to 30 minutes are incubated in incubator；
6th step, electric railway bump joint is taken out from vacuum incubator and is put into 1000 DEG C to 1150 DEG C of hardening media
Quenched；
7th step, is tempered after the completion of quenching, and temperature is 300 DEG C to 400 DEG C；
8th step, after the completion of tempering, removes the impurity that electric railway bump joint surface separates out；
9th step, is processed by shot blasting to electric railway bump joint surface again in vacuum tank is incubated.
Method And Principle：Electric railway bump joint is carried out slightly before salt bath heating is carried out using molten salt of borax medium
Process and roughly grind, fining-off and polishing are then carried out again, on the one hand reduce the carbon content on surface, improve wearability and plasticity,
Another aspect surface is careful smooth, makes the vanadium carbide diaphragm to be formed finer and close, and more preferably, uniform heating process is improved protectiveness
Electric railway bump joint service life, and be incubated in vacuum tank is incubated, reduce work of the workman in adverse circumstances
Make the time, and corrosion of the molten salt of borax medium to electric railway bump joint can be reduced.
The above；Preferably specific embodiment only of the invention；But protection scope of the present invention is not limited thereto；
Any one skilled in the art the invention discloses technical scope in；Technology according to the present invention scheme and its
Improve design and be subject to equivalent or change；Should all cover within the scope of the present invention.
Claims (4)
1. a kind of electric railway bump joint processing method, it is characterised in that：Comprise the following steps：
The first step, carries out roughing, and it is roughly ground to electric railway bump joint；
Second step, fining-off is carried out to electric railway bump joint, and it is polished in insulation vacuum tank；
3rd step, the electric railway bump joint after polishing is put into molten salt of borax medium, by the molten salt of borax medium
It is heated to 600 DEG C to 800 DEG C；
4th step, electric railway bump joint is taken out from molten salt of borax medium, to continue to be put into and be incubated 1 in insulation vacuum tank
To 2 hours；
5th step, will add appropriate vanadium carbide to be heated to 1050 to 1150 DEG C in molten salt of borax medium, by insulation vacuum tank
Electric railway bump joint is put into the molten salt of borax medium added with vanadium carbide, is taken after after the diaphragm that surface forms vanadium carbide
Go out to be put into vacuum incubator and be incubated 20 to 30 minutes；
6th step, electric railway bump joint is taken out from vacuum incubator and is put into 1000 DEG C to 1150 DEG C of hardening media
Quenched；
7th step, is tempered after the completion of quenching, and temperature is 300 DEG C to 400 DEG C；
8th step, after the completion of tempering, removes the impurity that electric railway bump joint surface separates out；
9th step, is processed by shot blasting to electric railway bump joint surface again in vacuum tank is incubated.
2. a kind of electric railway bump joint processing method according to claim 1, it is characterised in that：3rd step
In the 4th step, the molten salt of borax medium is heated to being taken out after 600 DEG C to 800 DEG C being put into insulation 1 to 2 in insulation vacuum tank
Individual hour.
3. a kind of electric railway bump joint processing method according to claim 1, it is characterised in that：5th step
In, appropriate vanadium carbide will be added to be heated to 600 DEG C to 800 DEG C in molten salt of borax medium first, will be electric in insulation vacuum tank
Change railway bump joint to be put into the molten salt of borax medium added with vanadium carbide, continue to heat a point three phases, first stage will
The molten salt of borax medium added with vanadium carbide is heated to 700 DEG C to 900 DEG C, is put into 20 to 30 points of insulation in insulation vacuum tank
Clock, second stage continues to be heated to 800 DEG C to 1000 DEG C to it, is put into heat insulating hollow case and is incubated 20 to 30 minutes, the 3rd rank
Section is heated to 1050 DEG C to 1150 DEG C to it, then takes out to be put into incubator being incubated 20 to 30 minutes.
4. a kind of electric railway bump joint processing method according to claim 1, it is characterised in that：The first step
In the 8th step, electric railway bump joint size is measured using survey tool, the electric railway flange changed to size
Joint carries out scrapping treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710128113.3A CN106676244A (en) | 2017-03-06 | 2017-03-06 | Electrified railway flange joint treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710128113.3A CN106676244A (en) | 2017-03-06 | 2017-03-06 | Electrified railway flange joint treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106676244A true CN106676244A (en) | 2017-05-17 |
Family
ID=58826425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710128113.3A Pending CN106676244A (en) | 2017-03-06 | 2017-03-06 | Electrified railway flange joint treatment method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106676244A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609272A (en) * | 2004-10-13 | 2005-04-27 | 昆明理工大学 | Process for producing metal carbonide hard face coating and application thereof |
| CN101649383A (en) * | 2009-09-02 | 2010-02-17 | 南方金康汽车零部件有限公司 | Heat treatment process for manufacturing mold of automotive rear longeron |
| CN102877021A (en) * | 2012-10-10 | 2013-01-16 | 常州大学 | Method for preparing VC coatings in situ by means of heat radiation |
| CN104195573A (en) * | 2014-09-11 | 2014-12-10 | 东莞诚兴五金制品有限公司 | Surface treatment process of mould |
| CN104847662A (en) * | 2015-06-09 | 2015-08-19 | 广东美芝制冷设备有限公司 | Compressing component of compressor, preparation method method of compressing component, compressor and refrigerating device |
-
2017
- 2017-03-06 CN CN201710128113.3A patent/CN106676244A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609272A (en) * | 2004-10-13 | 2005-04-27 | 昆明理工大学 | Process for producing metal carbonide hard face coating and application thereof |
| CN101649383A (en) * | 2009-09-02 | 2010-02-17 | 南方金康汽车零部件有限公司 | Heat treatment process for manufacturing mold of automotive rear longeron |
| CN102877021A (en) * | 2012-10-10 | 2013-01-16 | 常州大学 | Method for preparing VC coatings in situ by means of heat radiation |
| CN104195573A (en) * | 2014-09-11 | 2014-12-10 | 东莞诚兴五金制品有限公司 | Surface treatment process of mould |
| CN104847662A (en) * | 2015-06-09 | 2015-08-19 | 广东美芝制冷设备有限公司 | Compressing component of compressor, preparation method method of compressing component, compressor and refrigerating device |
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| 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: 20170517 |
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| RJ01 | Rejection of invention patent application after publication |