CN108913981A - A kind of particulate metal material for high-speed rail braking - Google Patents
A kind of particulate metal material for high-speed rail braking Download PDFInfo
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- CN108913981A CN108913981A CN201810710847.7A CN201810710847A CN108913981A CN 108913981 A CN108913981 A CN 108913981A CN 201810710847 A CN201810710847 A CN 201810710847A CN 108913981 A CN108913981 A CN 108913981A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
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- 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
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
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- 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
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of particulate metal materials for high-speed rail braking, include the following steps：Steel billet is placed in smelting furnace and is fused into molten steel, then carries out carbon removal treatment, forms medium carbon steel in the range of 0.25%~0.65% for the carbon content in molten steel is near, then Ni, Cr, Mo and V metallic element, additional proportion 2 will be added in molten steel:1:1:0.5, and make alloy total amount lower than 5%, it is eventually adding vermiculizer；Taking out system for molten steel is in steel billet, and medium carbon low alloy steel block can be obtained after the completion of steel billet is cooling.The present invention solves the problems, such as that the existing materials'use service life for high-speed rail braking is low and security performance is low, have long service life and the high advantage of security performance, the present invention can reduce the frequency of replacement high-speed rail brake material, effectively avoid causing serious influence to economy, the normal operation of high-speed rail will not also be delayed simultaneously, prevent unavoidable contingency occur, is worth of widely use.
Description
Technical field
The present invention relates to high-speed rail manufacturing technology field, specially a kind of particulate metal material for high-speed rail braking.
Background technique
High-speed rail, full name high-speed railway, the definition of China national Railway Bureau are started 250 kilometers/hour for newly-built design and (are contained
It is reserved) and the above motor train unit train, passenger dedicated railway line of the initial stage overall trip speed not less than 200 kilometers/hour, high-speed railway
In addition in train, other than operation reaches certain speed standard, vehicle, roadbed, rail, operation require cooperation and promoted.Many states
Family all uses non-fragment orbit, the general non-fragment orbit of China Railway High-speed, and non-fragment orbit is made of rail, fastener, cell board, rises
Damping, depressurization.Rail plate of non-fragment orbit itself is that concrete casting forms, and roadbed is without rubble, rail, sleeper
It is directly layered on concrete rail plate, non-fragment orbit is the state-of-the-art railway technology in the world today, can reduce maintenance, reduce powder
Dirt is beautified the environment.
With the rapid development of national economy, takes high-speed rail and has become the essential vehicles of people's daily trip,
The security performance of high-speed rail is then the place of special emphasis concern, and high-speed rail braking is then the emphasis of security performance, however existing
Material for high-speed rail braking has that service life is low and security performance is low, increases replacement high-speed rail braking material
The frequency of material causes serious influence to economy, while can also delay the normal operation of high-speed rail, is easy to appear unavoidable
Contingency, for this purpose, we have proposed a kind of particulate metal materials for high-speed rail braking.
Summary of the invention
The purpose of the present invention is to provide it is a kind of for high-speed rail braking particulate metal material, have long service life with
And the advantage that security performance is high, it is low and security performance is low to solve the existing materials'use service life for high-speed rail braking
Problem.
To achieve the above object, the present invention provides the following technical solutions：A kind of particulate metal material for high-speed rail braking
Material, includes the following steps：
Step 1：Steel billet is placed in smelting furnace and is fused into molten steel, then carries out carbon removal treatment, by the carbon content in molten steel
It is near that medium carbon steel is formed in the range of 0.25%~0.65%, then Ni, Cr, Mo and V metallic element will be added in molten steel,
Additional proportion is 2:1:1:0.5, and make alloy total amount lower than 5%, it is eventually adding vermiculizer；
Step 2：Taking out system for molten steel is in steel billet, and medium carbon low alloy steel block can be obtained after the completion of steel billet is cooling；
Step 3：Medium carbon low alloy steel block is added to the purified treatment that sulphur removal and phosphorus are carried out in electric arc furnaces；
Step 4：Blanking processing is carried out, blanking is carried out on sawing machine and handles to obtainBloom, clearly
Surface is managed and with magnetic powder inspection, if there is crackle that must handle completely；
Step 5：Hot-working is carried out, bloom is placed in forge furnace and carries out heats forged；
Step 6：Slow cooling processing is carried out, fire source is closed, carries out bloom without external force voluntarily slow cooling in forge furnace；
Step 7：Heat treatment process, again to bloom carry out normalizing and tempering process, normalizing temperature control 920 DEG C~
930 DEG C, to be taken out again after forge furnace inside holding 1.5h in air cooling, tempering temperature is controlled at 650 DEG C~6800 DEG C,
Cooling in air is taken out after forge furnace inside holding 1.5h again, particulate metal material can be obtained.
Preferably, the vermiculizer in the step 1 is magnesium or rare earth element.
Preferably, by middle carbon and low-alloy before the density ratio processing of purified medium carbon low alloy steel block in the step 3
The density of bloom can be improved 30.25%.
Preferably, the initial temperature of forge furnace is 1150 DEG C in the step 5, and final temperature is 880 DEG C.
Compared with prior art, beneficial effects of the present invention are as follows：Solving the existing material for high-speed rail braking makes
The low and low security performance problem with the service life, having long service life and the high advantage of security performance, the present invention can subtract
The frequency for having lacked replacement high-speed rail brake material, effectively avoids causing serious influence to economy, while will not also delay high-speed rail
It operates normally, prevents unavoidable contingency occur, be worth of widely use.
Specific embodiment
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution, and a kind of particulate metal material for high-speed rail braking includes the following steps：
Step 1：Steel billet is placed in smelting furnace and is fused into molten steel, then carries out carbon removal treatment, by the carbon content in molten steel
It is near that medium carbon steel is formed in the range of 0.25%~0.65%, then Ni, Cr, Mo and V metallic element will be added in molten steel,
Additional proportion is 2:1:1:0.5, and make alloy total amount lower than 5%, it is eventually adding vermiculizer；
Step 2：Taking out system for molten steel is in steel billet, and medium carbon low alloy steel block can be obtained after the completion of steel billet is cooling；
Step 3：Medium carbon low alloy steel block is added to the purified treatment that sulphur removal and phosphorus are carried out in electric arc furnaces；
Step 4：Blanking processing is carried out, blanking is carried out on sawing machine and handles to obtainBloom, clearly
Surface is managed and with magnetic powder inspection, if there is crackle that must handle completely；
Step 5：Hot-working is carried out, bloom is placed in forge furnace and carries out heats forged；
Step 6：Slow cooling processing is carried out, fire source is closed, carries out bloom without external force voluntarily slow cooling in forge furnace；
Step 7：Heat treatment process, again to bloom carry out normalizing and tempering process, normalizing temperature control 920 DEG C~
930 DEG C, to be taken out again after forge furnace inside holding 1.5h in air cooling, tempering temperature is controlled at 650 DEG C~6800 DEG C,
Cooling in air is taken out after forge furnace inside holding 1.5h again, particulate metal material can be obtained.
Embodiment one：
Steel billet is placed in smelting furnace and is fused into molten steel, then carries out carbon removal treatment, by the carbon content in molten steel it is near
Medium carbon steel is formed in the range of 0.25%~0.65%, then Ni, Cr, Mo and V metallic element will be added in molten steel, and ratio is added
Example is 2:1:1:0.5, and make alloy total amount lower than 5%, it is eventually adding vermiculizer；Taking out system for molten steel is in steel billet, to steel billet
Medium carbon low alloy steel block can be obtained after the completion of cooling；Medium carbon low alloy steel block is added in electric arc furnaces and carries out sulphur removal and phosphorus
Purified treatment；Blanking processing is carried out, blanking is carried out on sawing machine and handles to obtainBloom, clear up table
Face and with magnetic powder inspection, if there is crackle that must handle completely；Hot-working is carried out, bloom is placed in forge furnace and is heated
Forging；Slow cooling processing is carried out, fire source is closed, carries out bloom without external force voluntarily slow cooling in forge furnace；Heat treatment process, then
Secondary to carry out normalizing and tempering processing to bloom, normalizing temperature is controlled at 920 DEG C~930 DEG C, after forge furnace inside holding 1.5h again
Cooling in air is taken out, tempering temperature is controlled at 650 DEG C~6800 DEG C, takes out sky again after forge furnace inside holding 1.5h
It is cooling in gas, particulate metal material can be obtained.
Embodiment two：
In example 1, following processes are added：
Vermiculizer in step 1 is magnesium or rare earth element.
Steel billet is placed in smelting furnace and is fused into molten steel, then carries out carbon removal treatment, by the carbon content in molten steel it is near
Medium carbon steel is formed in the range of 0.25%~0.65%, then Ni, Cr, Mo and V metallic element will be added in molten steel, and ratio is added
Example is 2:1:1:0.5, and make alloy total amount lower than 5%, it is eventually adding vermiculizer；Taking out system for molten steel is in steel billet, to steel billet
Medium carbon low alloy steel block can be obtained after the completion of cooling；Medium carbon low alloy steel block is added in electric arc furnaces and carries out sulphur removal and phosphorus
Purified treatment；Blanking processing is carried out, blanking is carried out on sawing machine and handles to obtainBloom, cleaning
Surface and with magnetic powder inspection, if there is crackle that must handle completely；Hot-working is carried out, bloom is placed in forge furnace and is added
Warm and hot forging；Slow cooling processing is carried out, fire source is closed, carries out bloom without external force voluntarily slow cooling in forge furnace；Heat treatment process,
Normalizing is carried out to bloom again and tempering is processed, normalizing temperature is controlled at 920 DEG C~930 DEG C, after forge furnace inside holding 1.5h
Cooling in air is taken out again, and tempering temperature is controlled at 650 DEG C~6800 DEG C, taken out again after forge furnace inside holding 1.5h
It is cooling in air, particulate metal material can be obtained.
Embodiment three：
In example 2, following processes are added：
The density of medium carbon low alloy steel block before being handled in step 3 by the density ratio of purified medium carbon low alloy steel block
It can be improved 30.25%.
Steel billet is placed in smelting furnace and is fused into molten steel, then carries out carbon removal treatment, by the carbon content in molten steel it is near
Medium carbon steel is formed in the range of 0.25%~0.65%, then Ni, Cr, Mo and V metallic element will be added in molten steel, and ratio is added
Example is 2:1:1:0.5, and make alloy total amount lower than 5%, it is eventually adding vermiculizer；Taking out system for molten steel is in steel billet, to steel billet
Medium carbon low alloy steel block can be obtained after the completion of cooling；Medium carbon low alloy steel block is added in electric arc furnaces and carries out sulphur removal and phosphorus
Purified treatment；Blanking processing is carried out, blanking is carried out on sawing machine and handles to obtainBloom, cleaning
Surface and with magnetic powder inspection, if there is crackle that must handle completely；Hot-working is carried out, bloom is placed in forge furnace and is added
Warm and hot forging；Slow cooling processing is carried out, fire source is closed, carries out bloom without external force voluntarily slow cooling in forge furnace；Heat treatment process,
Normalizing is carried out to bloom again and tempering is processed, normalizing temperature is controlled at 920 DEG C~930 DEG C, after forge furnace inside holding 1.5h
Cooling in air is taken out again, and tempering temperature is controlled at 650 DEG C~6800 DEG C, taken out again after forge furnace inside holding 1.5h
It is cooling in air, particulate metal material can be obtained.
Example IV：
In the third embodiment, following processes are added：
The initial temperature of forge furnace is 1150 DEG C in step 5, and final temperature is 880 DEG C.
Steel billet is placed in smelting furnace and is fused into molten steel, then carries out carbon removal treatment, by the carbon content in molten steel it is near
Medium carbon steel is formed in the range of 0.25%~0.65%, then Ni, Cr, Mo and V metallic element will be added in molten steel, and ratio is added
Example is 2:1:1:0.5, and make alloy total amount lower than 5%, it is eventually adding vermiculizer；Taking out system for molten steel is in steel billet, to steel billet
Medium carbon low alloy steel block can be obtained after the completion of cooling；Medium carbon low alloy steel block is added in electric arc furnaces and carries out sulphur removal and phosphorus
Purified treatment；Blanking processing is carried out, blanking is carried out on sawing machine and handles to obtainBloom, clear up table
Face and with magnetic powder inspection, if there is crackle that must handle completely；Hot-working is carried out, bloom is placed in forge furnace and is heated
Forging；Slow cooling processing is carried out, fire source is closed, carries out bloom without external force voluntarily slow cooling in forge furnace；Heat treatment process, then
Secondary to carry out normalizing and tempering processing to bloom, normalizing temperature is controlled at 920 DEG C~930 DEG C, after forge furnace inside holding 1.5h again
Cooling in air is taken out, tempering temperature is controlled at 650 DEG C~6800 DEG C, takes out sky again after forge furnace inside holding 1.5h
It is cooling in gas, particulate metal material can be obtained.
In summary：This is used for particulate metal material of high-speed rail braking, solves the existing material for high-speed rail braking
The problem that service life is low and security performance is low has long service life and the high advantage of security performance, and the present invention can
The frequency for reducing replacement high-speed rail brake material, effectively avoids causing serious influence to economy, while will not also delay high-speed rail
Normal operation, prevent unavoidable contingency occur, be worth of widely use.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of particulate metal material for high-speed rail braking, it is characterised in that：Particulate metal material be made technique include with
Lower step：
Step 1：Steel billet is placed in smelting furnace and is fused into molten steel, then carries out carbon removal treatment, the carbon content in molten steel is near
Medium carbon steel is formed in the range of 0.25%~0.65%, then Ni, Cr, Mo and V metallic element will be added in molten steel, and ratio is added
Example is 2:1:1:0.5, and make alloy total amount lower than 5%, it is eventually adding vermiculizer；
Step 2：Taking out system for molten steel is in steel billet, and medium carbon low alloy steel block can be obtained after the completion of steel billet is cooling；
Step 3：Medium carbon low alloy steel block is added to the purified treatment that sulphur removal and phosphorus are carried out in electric arc furnaces；
Step 4：Blanking processing is carried out, blanking is carried out on sawing machine and handles to obtainBloom, clear up surface
And with magnetic powder inspection, if there is crackle that must handle completely；
Step 5：Hot-working is carried out, bloom is placed in forge furnace and carries out heats forged；
Step 6：Slow cooling processing is carried out, fire source is closed, carries out bloom without external force voluntarily slow cooling in forge furnace；
Step 7：Heat treatment process carries out normalizing to bloom again and tempering is processed, and normalizing temperature is controlled at 920 DEG C~930 DEG C,
Take out cooling in air again after forge furnace inside holding 1.5h, tempering temperature is controlled at 650 DEG C~6800 DEG C, in forge furnace
Cooling in air is taken out after heat preservation 1.5h again, particulate metal material can be obtained.
2. a kind of particulate metal material for high-speed rail braking according to claim 1, it is characterised in that：The step 1
In vermiculizer be magnesium or rare earth element.
3. a kind of particulate metal material for high-speed rail braking according to claim 1, it is characterised in that：The step 3
The density of medium carbon low alloy steel block can be improved before the middle density ratio by purified medium carbon low alloy steel block is handled
30.25%.
4. a kind of particulate metal material for high-speed rail braking according to claim 1, it is characterised in that：The step 5
The initial temperature of middle forge furnace is 1150 DEG C, and final temperature is 880 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810710847.7A CN108913981A (en) | 2018-07-03 | 2018-07-03 | A kind of particulate metal material for high-speed rail braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810710847.7A CN108913981A (en) | 2018-07-03 | 2018-07-03 | A kind of particulate metal material for high-speed rail braking |
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| CN108913981A true CN108913981A (en) | 2018-11-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001323323A (en) * | 2000-05-12 | 2001-11-22 | Aichi Steel Works Ltd | Method for producing automobile engine valve |
| CN101275206A (en) * | 2008-05-15 | 2008-10-01 | 杜文河 | Alloy tool steel and production method thereof |
| CN103160729A (en) * | 2013-04-08 | 2013-06-19 | 内蒙古包钢钢联股份有限公司 | Medium-carbon microalloyed steel for engineering machinery caterpillar chain piece and production process thereof |
| CN106947908A (en) * | 2017-03-20 | 2017-07-14 | 本钢板材股份有限公司 | A kind of method that continuous casting electroslag produces 4Cr5MoSiV1 die steels |
-
2018
- 2018-07-03 CN CN201810710847.7A patent/CN108913981A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001323323A (en) * | 2000-05-12 | 2001-11-22 | Aichi Steel Works Ltd | Method for producing automobile engine valve |
| CN101275206A (en) * | 2008-05-15 | 2008-10-01 | 杜文河 | Alloy tool steel and production method thereof |
| CN103160729A (en) * | 2013-04-08 | 2013-06-19 | 内蒙古包钢钢联股份有限公司 | Medium-carbon microalloyed steel for engineering machinery caterpillar chain piece and production process thereof |
| CN106947908A (en) * | 2017-03-20 | 2017-07-14 | 本钢板材股份有限公司 | A kind of method that continuous casting electroslag produces 4Cr5MoSiV1 die steels |
Non-Patent Citations (2)
| Title |
|---|
| Г. А. 萨维茨基 著: "《天线设备》", 28 February 1965, 人民邮电出版社 * |
| 简光沂 主编: "《新编实用五金手册》", 30 June 1997, 中山大学出版社 * |
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