CN107841683A - High speed heavy rail head edger roll ring and its preparation technology - Google Patents

High speed heavy rail head edger roll ring and its preparation technology Download PDF

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Publication number
CN107841683A
CN107841683A CN201711098042.3A CN201711098042A CN107841683A CN 107841683 A CN107841683 A CN 107841683A CN 201711098042 A CN201711098042 A CN 201711098042A CN 107841683 A CN107841683 A CN 107841683A
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CN
China
Prior art keywords
edger roll
roll ring
heat
high speed
rail head
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
Application number
CN201711098042.3A
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Chinese (zh)
Inventor
许健
周国祥
时海峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHANGZHOU KAIDA-BRC HEAVY INDUSTRY TECHNOLOGY Co Ltd
Original Assignee
CHANGZHOU KAIDA-BRC HEAVY INDUSTRY TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHANGZHOU KAIDA-BRC HEAVY INDUSTRY TECHNOLOGY Co Ltd filed Critical CHANGZHOU KAIDA-BRC HEAVY INDUSTRY TECHNOLOGY Co Ltd
Priority to CN201711098042.3A priority Critical patent/CN107841683A/en
Publication of CN107841683A publication Critical patent/CN107841683A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry
    • 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
    • C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • 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
    • 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
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

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  • 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)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention discloses a kind of high speed heavy rail head edger roll ring and its preparation technology, technique comprises the following steps：Step 1: it is chemically defined；C：2.55 2.95%；Si：0.50 1.0%；Mn：0.35 0.65%；Cr：3.5 3.85%；Ni：>=0.35%；Mo：1.6 1.95%；V：9.0 9.5%；Co：>=0.3%；P≤0.030%；S≤0.025%；Al：0≤0.03%；Re >=0.15%；Surplus is Fe and inevitable impurity；Step 2: centrifugal casting：Melting is carried out by electric arc furnaces, ensures that the chemical composition of molten steel meets the requirements；Before tapping deoxidation and anti-oxidation is carried out with aluminium block and glass dregs；Step 3: heat treatment：Blank carries out heat at 450 550 ° and unpacked, and immediately enters heat-treatment furnace and is made annealing treatment, is heat-treated again after roughing, then obtains qualified high-vanadium high-speed steel finished product after testing.The edger roll ring of the present invention is high-vanadium high-speed steel, improves wearability, the heat resistanceheat resistant crack performance of roll.

Description

High speed heavy rail head edger roll ring and its preparation technology
Technical field
The present invention relates to a kind of high speed heavy rail head edger roll ring and its preparation technology.
Background technology
For the sane development of supporting National Highway railway, the country shares 4 high speed heavy rail production lines, is Anshan steel respectively Company, bag Wuhan Iron and Steel Company, Baotou Iron and Steel Company, Panzhihua Iron, can roll after transformation in 2007~2010 years respectively 100mm processed high speed rail, to meet the development of the high ferro of country.Base steel collars with ultrahigh hardness super abrasive, high speed heavy rail Producer is referred to as head edger roll ring, and the rolling position of this edger roll ring is located in contact tread of the rail with train, it is desirable to precision it High, the features such as deflection is small, surface smoothness is good.Heavy-rail Production in China enterprise is all using the forging collars of Japanese Nissan import Production, cost are high.
The content of the invention
It is an object of the invention to provide a kind of high speed heavy rail head edger roll ring and its preparation technology.
The technical scheme for realizing the object of the invention is the preparation technology of high speed heavy rail head edger roll ring, including following step Suddenly：
Step 1: it is chemically defined；C：2.55-2.95%；Si：0.50-1.0%；Mn：0.35-0.65%；Cr： 3.5-3.85%；Ni：>=0.35%；Mo：1.6-1.95%；V：9.0-9.5%；Co：>=0.3%；P≤0.030%；S≤ 0.025%；Al：0≤0.03%；Re >=0.15%；Surplus is Fe and inevitable impurity；
Step 2: centrifugal casting：Melting is carried out by electric arc furnaces, ensures that the chemical composition of molten steel meets the requirements；Tapping It is preceding to carry out deoxidation and anti-oxidation with aluminium block and glass dregs；
Step 3: heat treatment：Blank carries out heat at 450-550 ° and unpacked, and immediately enters heat-treatment furnace and is made annealing treatment, It is heat-treated again after roughing, then obtains qualified high-vanadium high-speed steel finished product after testing.
In the step 2, on the basis of liquidus temperature, 100-150 DEG C of tapping is heated.
In the step 2, during melting, add 0.20-0.30% steel alterant and carry out Metamorphism treatment, through 5-8 minute towns It is quiet, poured into a mould after then stirring 0.5-1 minutes with electromagnetic mixer.
In the step 2,0.1-0.2% vanadium iron microparticle carries out Metamorphism treatment while adding steel alterant.
Present invention simultaneously provides the high speed heavy rail head edger roll ring that previous process to be utilized is prepared, edger roll ring base Metallographic structure is：Martensitic matrix+and rich Nb, rich Mo, rich V wear resistant carbide+a small amount of retained austenite.
After employing above-mentioned technical proposal, the present invention has following positive effect：(1) edger roll ring of the invention is height Vanadium high-speed steel, improve wearability, the heat resistanceheat resistant crack performance of roll.
(2) collars of the invention is using metal pattern production and the production of centrifuging process method, using metal die Quench and The method of operating on centrifugal force, cause to obtain the qualified products of no casting flaw with collars product.
(3) present invention is directed to the characteristics of high vanadium is oxidizable, and casting process uses molten steel antioxidant all standing, and glass dregs connect It is in a liquid state after touching high temperature liquid iron and floats on surface, is played a part of in molten iron in air insulated.
(4) chemical composition of the invention configures entirely different and conventional high-speed steels roll, improves rolling yield and shaped steel Surface quality, more meet the market requirement, meet the specific demand of product.
(5) vanadium of the invention largely can be solid-solution in iron, played and crystallized closely knit, the matrix of effective hardened material, can prevent Only coarse grains contribute to crystalline structure granular, and can improve quenching property.
Embodiment
(embodiment 1)
The high speed heavy rail head preparation technology of edger roll ring of the present embodiment, comprises the following steps：
Step 1: it is chemically defined；C：2.55-2.95%；Si：0.50-1.0%；Mn：0.35-0.65%；Cr： 3.5-3.85%；Ni：>=0.35%；Mo：1.6-1.95%；V：9.0-9.5%；Co：>=0.3%；P≤0.030%；S≤ 0.025%；Al：0≤0.03%；Re >=0.15%；Surplus is Fe and inevitable impurity；
Step 2: centrifugal casting：Melting is carried out by electric arc furnaces, ensures that the chemical composition of molten steel meets the requirements；During melting, The vanadium iron microparticle for adding 0.20-0.30% steel alterant and 0.1-0.2% carries out Metamorphism treatment progress Metamorphism treatment, through 5-8 Minute is calm, on the basis of being cast in liquidus temperature after then stirring 0.5-1 minutes with electromagnetic mixer, heats 100-150 DEG C Tapping, deoxidation and anti-oxidation is carried out with aluminium block and glass dregs before tapping；
Step 3: heat treatment：Blank carries out heat at 450-550 ° and unpacked, and immediately enters heat-treatment furnace and is made annealing treatment, It is heat-treated again after roughing, then obtains qualified high-vanadium high-speed steel finished product after testing.Edger roll ring base metallographic structure is：Horse Family name's body matrix+and rich Nb, rich Mo, rich V wear resistant carbide+a small amount of retained austenite.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., it should be included in the guarantor of the present invention Within the scope of shield.

Claims (6)

1. the high speed heavy rail head preparation technology of edger roll ring, it is characterised in that comprise the following steps：
Step 1: it is chemically defined；C：2.55-2.95%；Si：0.50-1.0%；Mn：0.35-0.65%；Cr：3.5- 3.85%；Ni：>=0.35%；Mo：1.6-1.95%；V：9.0-9.5%；Co：>=0.3%；P≤0.030%；S≤ 0.025%；Al：0≤0.03%；Re >=0.15%；Surplus is Fe and inevitable impurity；
Step 2: centrifugal casting：Melting is carried out by electric arc furnaces, ensures that the chemical composition of molten steel meets the requirements；Used before tapping Aluminium block and glass dregs carry out deoxidation and anti-oxidation；
Step 3: heat treatment：Blank carries out heat at 450-550 ° and unpacked, and immediately enters heat-treatment furnace and is made annealing treatment, thick to add It is heat-treated again after work, then obtains qualified high-vanadium high-speed steel finished product after testing.
2. the preparation technology of high speed heavy rail head edger roll ring according to claim 1, it is characterised in that：The step 2 In, on the basis of liquidus temperature, heat 100-150 DEG C of tapping.
3. the preparation technology of high speed heavy rail head edger roll ring according to claim 2, it is characterised in that：The step 2 In, during melting, add 0.20-0.30% steel alterant and carry out Metamorphism treatment, it is calm through 5-8 minutes, then use electromagnetic mixer Poured into a mould after stirring 0.5-1 minutes.
4. the preparation technology of high speed heavy rail head edger roll ring according to claim 3, it is characterised in that：The step 2 In, 0.1-0.2% vanadium iron microparticle carries out Metamorphism treatment while adding steel alterant.
5. high speed heavy rail head edger roll ring, it is characterised in that：Produce to obtain using the preparation technology of claim 3.
6. high speed heavy rail head edger roll ring according to claim 5, it is characterised in that：The edger roll ring base metallographic group It is woven to：Martensitic matrix+and rich Nb, rich Mo, rich V wear resistant carbide+a small amount of retained austenite.
CN201711098042.3A 2017-11-09 2017-11-09 High speed heavy rail head edger roll ring and its preparation technology Pending CN107841683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711098042.3A CN107841683A (en) 2017-11-09 2017-11-09 High speed heavy rail head edger roll ring and its preparation technology

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Application Number Priority Date Filing Date Title
CN201711098042.3A CN107841683A (en) 2017-11-09 2017-11-09 High speed heavy rail head edger roll ring and its preparation technology

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111996439A (en) * 2020-10-30 2020-11-27 常州凯达重工科技有限公司 Large-scale high-chromium iron roll collar and preparation method of assembly type roll thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6144154A (en) * 1984-08-07 1986-03-03 Hitachi Metals Ltd Wear resistant alloy cast iron
JPS6220854A (en) * 1985-07-19 1987-01-29 Sumitomo Metal Ind Ltd Tool steel excellent in toughness
CN105463308A (en) * 2015-11-26 2016-04-06 常州凯达重工科技有限公司 Centrifugal metal roll ring and manufacturing process thereof
JP2016180168A (en) * 2015-03-25 2016-10-13 日立金属株式会社 Consecutive tinkering padding casting-made composite roll for rolling
CN106282821A (en) * 2016-08-17 2017-01-04 三鑫重工机械有限公司 A kind of high-speed steel centrifugal compound steel core roll manufacture method of graphitiferous

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6144154A (en) * 1984-08-07 1986-03-03 Hitachi Metals Ltd Wear resistant alloy cast iron
JPS6220854A (en) * 1985-07-19 1987-01-29 Sumitomo Metal Ind Ltd Tool steel excellent in toughness
JP2016180168A (en) * 2015-03-25 2016-10-13 日立金属株式会社 Consecutive tinkering padding casting-made composite roll for rolling
CN105463308A (en) * 2015-11-26 2016-04-06 常州凯达重工科技有限公司 Centrifugal metal roll ring and manufacturing process thereof
CN106282821A (en) * 2016-08-17 2017-01-04 三鑫重工机械有限公司 A kind of high-speed steel centrifugal compound steel core roll manufacture method of graphitiferous

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111996439A (en) * 2020-10-30 2020-11-27 常州凯达重工科技有限公司 Large-scale high-chromium iron roll collar and preparation method of assembly type roll thereof
CN111996439B (en) * 2020-10-30 2021-03-23 常州凯达重工科技有限公司 Large-scale high-chromium iron roll collar and preparation method of assembly type roll thereof

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Application publication date: 20180327

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