CN110257710A - One kind rolling seamed high-speed steel rail mold steel roll and its processing technology - Google Patents
One kind rolling seamed high-speed steel rail mold steel roll and its processing technology Download PDFInfo
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- CN110257710A CN110257710A CN201910604595.4A CN201910604595A CN110257710A CN 110257710 A CN110257710 A CN 110257710A CN 201910604595 A CN201910604595 A CN 201910604595A CN 110257710 A CN110257710 A CN 110257710A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 229910000997 High-speed steel Inorganic materials 0.000 title claims abstract description 25
- 238000005096 rolling process Methods 0.000 title claims abstract description 18
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims description 35
- 239000002893 slag Substances 0.000 claims description 20
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 14
- 238000005496 tempering Methods 0.000 claims description 14
- 238000007670 refining Methods 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 230000006698 induction Effects 0.000 claims description 7
- 239000003595 mist Substances 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 229910052714 tellurium Inorganic materials 0.000 claims description 7
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 7
- 238000007669 thermal treatment Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000006063 cullet Substances 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 6
- 229910052720 vanadium Inorganic materials 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- 239000010436 fluorite Substances 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 229910000734 martensite Inorganic materials 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 210000003739 neck Anatomy 0.000 description 11
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/08—Shaking, vibrating, or turning of moulds
-
- 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
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- 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
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
-
- 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
-
- 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
- C22C38/18—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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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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)
- Geometry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention relates to roll technology fields, more particularly to one kind rolls seamed high-speed steel rail mold steel roll and its processing technology, the short disadvantage of service life exists in the prior art in solution, including plain-barreled roll, arc roller and horizontal collars, the plain-barreled roll and arc roller are symmetrical arranged, the quantity of the horizontal collars is set as two, and two horizontal collars are arranged symmetrically in the two sides of the plain-barreled roll and arc roller, the one kind proposed in the present invention rolls seamed high-speed steel rail mold steel roll, change traditional processing technology, optimize chemical configuration ingredient, it increases to form metal mold acinous carbide, it is processed through multistage heat treatment, red hardness when improving the wearability and rolled piece of roll, the surface quality and rolling yield of rail are improved by the oxidation film on pass wall, roller surface is reduced to pass slot bottom hardness drop, improve the service life of roll, than it The roll of his material enhances rolling yield up to 50% or more.
Description
Technical field
The present invention relates to roll technology fields more particularly to one kind to roll seamed high-speed steel rail mold steel roll and its processing work
Skill.
Background technique
With high-speed railway from the first generation (200Km/h) to the second generation (300Km/h) fast development, the third generation (350Km/
H) it is also run in important main line, it is higher and higher to the quality requirement of seamed high-speed steel rail to be safely operated train smooth, it rolls simultaneously
Technology acuracy and the condition for just having pricked rail are also more perfect.Therefore, update also proposed to the roll of rolling rail for high-speed railway
Requirement.The main performance of roll: the physical properties such as wearability, impact flexibility, thermal fatigue cracking, tensile strength have been both needed to
The unification of machine, and then lay the foundation to extend the service life of roll.And most enterprises all use zerolling technique at present,
The various aspects of performance of roll is caused all to be unable to satisfy requirement, the service life of roll is shorter.Thus the invention proposes a kind of bundles
Seamed high-speed steel rail mold steel roll processed is to solve the above problems.
Summary of the invention
The purpose of the present invention is to solve existing in the prior art the short disadvantage of service life, and the one kind proposed is rolled
Seamed high-speed steel rail mold steel roll.
To achieve the goals above, present invention employs following technical solutions:
One kind rolling seamed high-speed steel rail mold steel roll, including plain-barreled roll, arc roller and horizontal collars, and the plain-barreled roll and arc roller are symmetrical
Setting, the quantity of the horizontal collars is set as two, and two horizontal collars are arranged symmetrically in the two of the plain-barreled roll and arc roller
Side, the plain-barreled roll include the first roll body, and the arc roller includes the second roll body, and the two sides of first roll body and the second roll body are solid
Surely it is provided with roll neck, the roll neck other end is fixedly installed driving section, and the outside of the first roll body is in cambered surface.
Preferably, first roll body and the second roll body are structure as a whole with roll neck and driving section.
Preferably, the roll surface hardness of the plain-barreled roll and arc roller is 65~70HSD, the tensile strength of the roll neck >=
850MPa。
Preferably, the chemical component of the plain-barreled roll, arc roller and horizontal collars are as follows: C:0.50~0.70%；Si:0.40~
0.70%；Mn:0.45~0.65%；P≤0.030%；S≤0.020%；Cr:1.50~2.50%；Ni:1.20~1.80%；Mo:
0.80~1.30%；V:0.40~0.60%；Nb:0.30~0.50%.
Preferably, the matrix metallographic structure of the plain-barreled roll, arc roller and horizontal collars is carbonized by fine particulate metal mold
Object, sorbite and martensite are mixed.
A kind of processing technology for rolling seamed high-speed steel rail mold steel roll, includes the following steps:
S1, be chemically defined: the chemical component of the plain-barreled roll, arc roller and horizontal collars is C:0.50~0.70%；Si:
0.40~0.70%；Mn:0.45~0.65%；P≤0.030%；S≤0.020%；Cr:1.50~2.50%；Ni:1.20~1.80%；
Mo:0.80~1.30%；V:0.40~0.60%；Nb:0.30~0.50%；
S2, melting: in medium-frequency induction furnace melting primary molten steel, while slag making materials and cullet progress slag making are added, to floating
Remove the gred when slag is white, tap when temperature is to 1530 DEG C~1550 DEG C, be transferred to LF refining furnace refining, steel temperature to 1580 DEG C~
Be added the alloys such as Cr, V and Nb at 1620 DEG C, constant temperature when steel temperature is to 1650 DEG C~1680 DEG C, be added after five minutes 2~3 kilograms/
Molten steel is obtained after ton yttrium-base heavy rare earth and tellurium isoreactivity element；
S3, casting: molten steel made in S2 step is subjected to blowing argon gas oscillation, molten steel calmness is poured into after 8~12 minutes rolls
In roller casting mould, when casting, is slightly vibrated by electromagnetic vibrator, obtains roll casting after cooling；
S4, special thermal treatment processing: roll casting obtained in S3 step being put into normalizing furnace and carries out normalizing heating, and first
Stage heats up 8~10 DEG C per hour, when roller temperature is to 630 DEG C~660 DEG C, keeps the temperature 6 hours, and second stage heats up 10~15 per hour
DEG C, when roller temperature is to 820 DEG C~860 DEG C, 4 hours are kept the temperature, the phase III heats up 16~18 DEG C per hour, roller temperature to 920 DEG C~980
DEG C when, keep the temperature 6 hours, then by roll hang out carry out water mist spray quench, roller temperature places into tempering after being cooled to 430 DEG C~450 DEG C
Tempering is carried out in furnace, is heated up 10 DEG C~12 DEG C per hour, when roller temperature is to 560 DEG C~580 DEG C, keeps the temperature 12 hours；
S5, it is furnace-cooled to after room temperature to come out of the stove and carries out turnery processing.
Preferably, the slag making materials are mixed by moulding fresh sand, lime and Fluorspar Powder etc..
The beneficial effects of the present invention are: the one kind proposed in the present invention rolls seamed high-speed steel rail mold steel roll, change
Traditional processing technology optimizes chemical configuration ingredient, increases to form metal mold acinous carbide, through multistage heat treatment plus
Work, red hardness when improving the wearability and rolled piece of roll, by oxidation film on pass wall improve rail surface quality and
Rolling yield reduces roller surface to pass slot bottom hardness drop, improves the service life of roll, the roll than other materials mentions
Increase rolling yield up to 50% or more.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for rolling seamed high-speed steel rail mold steel roll proposed by the present invention.
In figure: 1 plain-barreled roll, 2 arc rollers, 3 horizontal collars, 4 first roll bodies, 5 second roll bodies, 6 roll necks, 7 driving sections, 8 arcs are recessed
Slot.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1, one kind rolling seamed high-speed steel rail mold steel roll, including plain-barreled roll 1, arc roller 2 and horizontal collars 3, institute
Plain-barreled roll 1 and arc roller 2 is stated to be symmetrical arranged, the quantity of horizontal collars 3 is set as two, and two horizontal collars 3 be arranged symmetrically in it is flat
The two sides of roller 1 and arc roller 2, plain-barreled roll 1 include the first roll body 4, and arc roller 2 includes the second roll body 5, the first roll body 4 and the second roll body 5
Two sides are fixedly installed roll neck 6, and 6 other end of roll neck is fixedly installed driving section 7, and the outside of the first roll body 4 is in cambered surface, the
One roll body 4 and the second roll body 5 are structure as a whole with roll neck 6 and driving section 7, and the roll surface hardness of plain-barreled roll 1 and arc roller 2 is 65~
70HSD, tensile strength >=850MPa of roll neck 6, the chemical component of plain-barreled roll 1, arc roller 2 and horizontal collars 3 be C:0.50~
0.70%；Si:0.40~0.70%；Mn:0.45~0.65%；P≤0.030%；S≤0.020%；Cr:1.50~2.50%；Ni:
1.20~1.80%；Mo:0.80~1.30%；V:0.40~0.60%；Nb:0.30~0.50%, plain-barreled roll 1, arc roller 2 and horizontal roller
The matrix metallographic structure of ring 3 is mixed by fine particulate metal mold carbide, sorbite and martensite.
A kind of processing technology for rolling seamed high-speed steel rail mold steel roll, includes the following steps:
S1, be chemically defined: the chemical component of plain-barreled roll 1, arc roller 2 and horizontal collars 3 is C:0.50~0.70%；Si:0.40
~0.70%；Mn:0.45~0.65%；P≤0.030%；S≤0.020%；Cr:1.50~2.50%；Ni:1.20~1.80%；Mo:
0.80~1.30%；V:0.40~0.60%；Nb:0.30~0.50%；
S2, melting: in medium-frequency induction furnace melting primary molten steel, while slag making materials and cullet progress slag making are added, to floating
Remove the gred when slag is white, tap when temperature is to 1530 DEG C~1550 DEG C, be transferred to LF refining furnace refining, steel temperature to 1580 DEG C~
Be added the alloys such as Cr, V and Nb at 1620 DEG C, constant temperature when steel temperature is to 1650 DEG C~1680 DEG C, be added after five minutes 2~3 kilograms/
Molten steel is obtained after ton yttrium-base heavy rare earth and tellurium isoreactivity element；
S3, casting: molten steel made in S2 step is subjected to blowing argon gas oscillation, molten steel calmness is poured into after 8~12 minutes rolls
In roller casting mould, when casting, is slightly vibrated by electromagnetic vibrator, obtains roll casting after cooling；
S4, special thermal treatment processing: roll casting obtained in S3 step being put into normalizing furnace and carries out normalizing heating, and first
Stage heats up 8~10 DEG C per hour, when roller temperature is to 630 DEG C~660 DEG C, keeps the temperature 6 hours, and second stage heats up 10~15 per hour
DEG C, when roller temperature is to 820 DEG C~860 DEG C, 4 hours are kept the temperature, the phase III heats up 16~18 DEG C per hour, roller temperature to 920 DEG C~980
DEG C when, keep the temperature 6 hours, then by roll hang out carry out water mist spray quench, roller temperature places into tempering after being cooled to 430 DEG C~450 DEG C
Tempering is carried out in furnace, is heated up 10 DEG C~12 DEG C per hour, when roller temperature is to 560 DEG C~580 DEG C, keeps the temperature 12 hours；
S5, it is furnace-cooled to after room temperature to come out of the stove and carries out turnery processing.
A kind of embodiment one, processing technology for rolling seamed high-speed steel rail mold steel roll, includes the following steps:
S1, be chemically defined: the chemical component of plain-barreled roll 1, arc roller 2 and horizontal collars 3 is C:0.50%；Si:0.40%；Mn:
0.45%；P:0.010%；S:0.010%；Cr:1.50%；Ni:1.20%；Mo:0.80%；V:0.40%；Nb:0.30%；
S2, melting: in medium-frequency induction furnace melting primary molten steel, while slag making materials and cullet progress slag making, slag making is added
Material is mixed by moulding fresh sand, lime and Fluorspar Powder etc., is removed the gred when white to dross, is gone out when temperature is to 1530 DEG C
Steel is transferred to LF refining furnace refining, is added the alloys such as Cr, V and Nb when steel temperature is to 1580 DEG C, constant temperature when steel temperature is to 1650 DEG C, and 5 points
Molten steel is obtained after 2 kg/ton of yttrium-base heavy rare earths and tellurium isoreactivity element is added after clock；
S3, casting: molten steel made in S2 step is subjected to blowing argon gas oscillation, roll casting is poured into after molten steel is 8 minutes calm
In modeling tool, when casting, is slightly vibrated by electromagnetic vibrator, obtains roll casting after cooling；
S4, special thermal treatment processing: roll casting obtained in S3 step being put into normalizing furnace and carries out normalizing heating, and first
Stage heats up 8 DEG C per hour, when roller temperature is to 630 DEG C, keeps the temperature 6 hours, second stage heats up 10 DEG C per hour, and roller temperature is to 820 DEG C
When, keep the temperature 4 hours, the phase III heats up 16 DEG C per hour, when roller temperature is to 920 DEG C, keep the temperature 6 hours, then by roll hang out into
The spray of row water mist is quenched, and roller temperature places into after being cooled to 430 DEG C carries out tempering in tempering furnace, is heated up 10 DEG C per hour, roller temperature is extremely
At 560 DEG C, 12 hours are kept the temperature；
S5, be furnace-cooled to after room temperature come out of the stove carry out turnery processing after obtain finished product one.
A kind of embodiment two, processing technology for rolling seamed high-speed steel rail mold steel roll, includes the following steps:
S1, be chemically defined: the chemical component of plain-barreled roll 1, arc roller 2 and horizontal collars 3 is C:0.60%；Si:0.50%；Mn:
0.55%；P:0.020%；S:0.015%；Cr:2.00%；Ni:1.40%；Mo:1.10%；V:0.50%；Nb:0.40%；
S2, melting: in medium-frequency induction furnace melting primary molten steel, while slag making materials and cullet progress slag making, slag making is added
Material is mixed by moulding fresh sand, lime and Fluorspar Powder etc., is removed the gred when white to dross, is gone out when temperature is to 1540 DEG C
Steel is transferred to LF refining furnace refining, is added the alloys such as Cr, V and Nb when steel temperature is to 1600 DEG C, constant temperature when steel temperature is to 1660 DEG C, and 5 points
Molten steel is obtained after 2.5 kg/ton of yttrium-base heavy rare earths and tellurium isoreactivity element is added after clock；
S3, casting: molten steel made in S2 step is subjected to blowing argon gas oscillation, molten steel calmness is poured into roll casting after ten minutes
In modeling tool, when casting, is slightly vibrated by electromagnetic vibrator, obtains roll casting after cooling；
S4, special thermal treatment processing: roll casting obtained in S3 step being put into normalizing furnace and carries out normalizing heating, and first
Stage heats up 9 DEG C per hour, when roller temperature is to 640 DEG C, keeps the temperature 6 hours, second stage heats up 12 DEG C per hour, and roller temperature is to 835 DEG C
When, keep the temperature 4 hours, the phase III heats up 17 DEG C per hour, when roller temperature is to 940 DEG C, keep the temperature 6 hours, then by roll hang out into
The spray of row water mist is quenched, and roller temperature places into after being cooled to 440 DEG C carries out tempering in tempering furnace, is heated up 11 DEG C per hour, roller temperature is extremely
At 570 DEG C, 12 hours are kept the temperature；
S5, be furnace-cooled to after room temperature come out of the stove carry out turnery processing after obtain finished product two.
A kind of embodiment three, processing technology for rolling seamed high-speed steel rail mold steel roll, includes the following steps:
S1, be chemically defined: the chemical component of plain-barreled roll 1, arc roller 2 and horizontal collars 3 is C:0.70%；Si:0.65%；Mn:
0.65%；P:0.030%；S:0.020%；Cr:2.50%；Ni:1.60%；Mo:1.30%；V:0.60%；Nb:0.50%；
S2, melting: in medium-frequency induction furnace melting primary molten steel, while slag making materials and cullet progress slag making, slag making is added
Material is mixed by moulding fresh sand, lime and Fluorspar Powder etc., is removed the gred when white to dross, is gone out when temperature is to 1550 DEG C
Steel is transferred to LF refining furnace refining, is added the alloys such as Cr, V and Nb when steel temperature is to 1620 DEG C, constant temperature when steel temperature is to 1680 DEG C, and 5 points
Molten steel is obtained after 3 kg/ton of yttrium-base heavy rare earths and tellurium isoreactivity element is added after clock；
S3, casting: molten steel made in S2 step is subjected to blowing argon gas oscillation, roll casting is poured into after molten steel is 12 minutes calm
In modeling tool, when casting, is slightly vibrated by electromagnetic vibrator, obtains roll casting after cooling；
S4, special thermal treatment processing: roll casting obtained in S3 step being put into normalizing furnace and carries out normalizing heating, and first
Stage heats up 10 DEG C per hour, when roller temperature is to 650 DEG C, keeps the temperature 6 hours, second stage heats up 15 DEG C per hour, and roller temperature is to 850 DEG C
When, keep the temperature 4 hours, the phase III heats up 18 DEG C per hour, when roller temperature is to 970 DEG C, keep the temperature 6 hours, then by roll hang out into
The spray of row water mist is quenched, and roller temperature places into after being cooled to 450 DEG C carries out tempering in tempering furnace, is heated up 12 DEG C per hour, roller temperature is extremely
At 580 DEG C, 12 hours are kept the temperature；
S5, be furnace-cooled to after room temperature come out of the stove carry out turnery processing after obtain finished product three.
A kind of comparative example, processing technology for rolling seamed high-speed steel rail mold steel roll, includes the following steps:
S1, be chemically defined: the chemical component of plain-barreled roll 1, arc roller 2 and horizontal collars 3 is C:0.70%；Si:0.65%；Mn:
0.65%；P:0.030%；S:0.020%；Cr:2.50%；Ni:1.60%；Mo:1.30%；V:0.60%；Nb:0.50%；
S2, melting: in medium-frequency induction furnace melting primary molten steel, constant temperature when steel temperature is to 1680 DEG C is added 3 kg/ton after five minutes
Molten steel is obtained after yttrium-base heavy rare earth and tellurium isoreactivity element；
S3, casting: molten steel made in S2 step is subjected to blowing argon gas oscillation, roll casting is poured into after molten steel is 12 minutes calm
In modeling tool, when casting, is slightly vibrated by electromagnetic vibrator, obtains roll casting after cooling；
S4, special thermal treatment processing: roll casting obtained in S3 step being put into normalizing furnace and carries out normalizing heating, and first
Stage heats up 10 DEG C per hour, when roller temperature is to 650 DEG C, keeps the temperature 6 hours, second stage heats up 15 DEG C per hour, and roller temperature is to 850 DEG C
When, keep the temperature 4 hours, the phase III heats up 18 DEG C per hour, when roller temperature is to 970 DEG C, keep the temperature 6 hours, then by roll hang out into
The spray of row water mist is quenched, and roller temperature places into after being cooled to 450 DEG C carries out tempering in tempering furnace, is heated up 12 DEG C per hour, roller temperature is extremely
At 580 DEG C, 12 hours are kept the temperature；
S5, be furnace-cooled to after room temperature come out of the stove carry out turnery processing after obtain finished product four.
Above-mentioned four kinds of finished products are tested, testing result is as follows:
| Finished product one | Finished product two | Finished product three | Finished product four | |
| Roll surface hardness (HSD) | 66 | 68 | 70 | 43 |
| Roll neck tensile strength (MPa) | 860 | 870 | 880 | 760 |
Above-mentioned testing result result it is recognised that the roll surface hardness and roll neck tension of mold steel roll made of the present invention
Intensity is all higher, extends the service life of roll.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. one kind rolls seamed high-speed steel rail mold steel roll, including plain-barreled roll (1), arc roller (2) and horizontal collars (3), feature
It is, the plain-barreled roll (1) and arc roller (2) are symmetrical arranged, and the quantity of the horizontal collars (3) is set as two, and two levels
Collars (3) is arranged symmetrically in the two sides of the plain-barreled roll (1) and arc roller (2), and the plain-barreled roll (1) includes the first roll body (4), the arc
Roller (2) includes the second roll body (5), and the two sides of first roll body (4) and the second roll body (5) are fixedly installed roll neck (6), institute
It states roll neck (6) other end to be fixedly installed driving section (7), and the outside of the first roll body (4) is in cambered surface.
2. one kind according to claim 1 rolls seamed high-speed steel rail mold steel roll, which is characterized in that first roll body
(4) it is structure as a whole with roll neck (6) and driving section (7) with the second roll body (5).
3. one kind according to claim 1 rolls seamed high-speed steel rail mold steel roll, which is characterized in that the plain-barreled roll (1)
Roll surface hardness with arc roller (2) is 65~70HSD, tensile strength >=850MPa of the roll neck (6).
4. one kind according to claim 1 rolls seamed high-speed steel rail mold steel roll, which is characterized in that the plain-barreled roll (1),
The chemical component of arc roller (2) and horizontal collars (3) is C:0.50~0.70%；Si:0.40~0.70%；Mn:0.45~
0.65%；P≤0.030%；S≤0.020%；Cr:1.50~2.50%；Ni:1.20~1.80%；Mo:0.80~1.30%；V:0.40
~0.60%；Nb:0.30~0.50%.
5. one kind according to claim 1 rolls seamed high-speed steel rail mold steel roll, which is characterized in that the plain-barreled roll (1),
The matrix metallographic structure of arc roller (2) and horizontal collars (3) is by fine particulate metal mold carbide, sorbite and martensite
It is mixed.
6. a kind of processing technology for rolling seamed high-speed steel rail mold steel roll according to claim 1, which is characterized in that packet
Include following steps:
S1, be chemically defined: the chemical component of the plain-barreled roll (1), arc roller (2) and horizontal collars (3) be C:0.50~
0.70%；Si:0.40~0.70%；Mn:0.45~0.65%；P≤0.030%；S≤0.020%；Cr:1.50~2.50%；Ni:
1.20~1.80%；Mo:0.80~1.30%；V:0.40~0.60%；Nb:0.30~0.50%；
S2, melting: in medium-frequency induction furnace melting primary molten steel, while slag making materials and cullet progress slag making are added, to floating
Remove the gred when slag is white, tap when temperature is to 1530 DEG C~1550 DEG C, be transferred to LF refining furnace refining, steel temperature to 1580 DEG C~
Be added the alloys such as Cr, V and Nb at 1620 DEG C, constant temperature when steel temperature is to 1650 DEG C~1680 DEG C, be added after five minutes 2~3 kilograms/
Molten steel is obtained after ton yttrium-base heavy rare earth and tellurium isoreactivity element；
S3, casting: molten steel made in S2 step is subjected to blowing argon gas oscillation, molten steel calmness is poured into after 8~12 minutes rolls
In roller casting mould, when casting, is slightly vibrated by electromagnetic vibrator, obtains roll casting after cooling；
S4, special thermal treatment processing: roll casting obtained in S3 step being put into normalizing furnace and carries out normalizing heating, and first
Stage heats up 8~10 DEG C per hour, when roller temperature is to 630 DEG C~660 DEG C, keeps the temperature 6 hours, and second stage heats up 10~15 per hour
DEG C, when roller temperature is to 820 DEG C~860 DEG C, 4 hours are kept the temperature, the phase III heats up 16~18 DEG C per hour, roller temperature to 920 DEG C~980
DEG C when, keep the temperature 6 hours, then by roll hang out carry out water mist spray quench, roller temperature places into tempering after being cooled to 430 DEG C~450 DEG C
Tempering is carried out in furnace, is heated up 10 DEG C~12 DEG C per hour, when roller temperature is to 560 DEG C~580 DEG C, keeps the temperature 12 hours；
S5, it is furnace-cooled to after room temperature to come out of the stove and carries out turnery processing.
7. a kind of processing technology for rolling seamed high-speed steel rail mold steel roll according to claim 6, which is characterized in that institute
Slag making materials are stated to be mixed by moulding fresh sand, lime and Fluorspar Powder etc..
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112007953A (en) * | 2020-07-07 | 2020-12-01 | 常州市瑞宏轧辊有限公司 | Die steel roughing roll special for rolling composite strip steel and manufacturing method thereof |
| CN112725708A (en) * | 2020-12-01 | 2021-04-30 | 邢台德龙机械轧辊有限公司 | Preparation method of roller for rough rolling of die steel medium plate |
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| US6176948B1 (en) * | 1998-03-16 | 2001-01-23 | Ovako Steel Ab | Method for the manufacture of components made of steel |
| CN103752605A (en) * | 2014-02-18 | 2014-04-30 | 江苏鸿业重工有限公司 | Universal rolling mill through improvement of two-roller rolling mill |
| CN108144965A (en) * | 2018-01-04 | 2018-06-12 | 湖州中杭轧辊有限公司 | A kind of roll and production technology suitable for cross-wedge-rolling shaft part |
| CN210506477U (en) * | 2019-07-05 | 2020-05-12 | 江苏君盛轧辊有限公司 | Die steel roll for rolling high-speed steel rail |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6176948B1 (en) * | 1998-03-16 | 2001-01-23 | Ovako Steel Ab | Method for the manufacture of components made of steel |
| CN103752605A (en) * | 2014-02-18 | 2014-04-30 | 江苏鸿业重工有限公司 | Universal rolling mill through improvement of two-roller rolling mill |
| CN108144965A (en) * | 2018-01-04 | 2018-06-12 | 湖州中杭轧辊有限公司 | A kind of roll and production technology suitable for cross-wedge-rolling shaft part |
| CN210506477U (en) * | 2019-07-05 | 2020-05-12 | 江苏君盛轧辊有限公司 | Die steel roll for rolling high-speed steel rail |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112007953A (en) * | 2020-07-07 | 2020-12-01 | 常州市瑞宏轧辊有限公司 | Die steel roughing roll special for rolling composite strip steel and manufacturing method thereof |
| CN112725708A (en) * | 2020-12-01 | 2021-04-30 | 邢台德龙机械轧辊有限公司 | Preparation method of roller for rough rolling of die steel medium plate |
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Application publication date: 20190920 |