CN107475641A - High-speed steel roll and preparation method thereof - Google Patents
High-speed steel roll and preparation method thereof Download PDFInfo
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- CN107475641A CN107475641A CN201710692419.1A CN201710692419A CN107475641A CN 107475641 A CN107475641 A CN 107475641A CN 201710692419 A CN201710692419 A CN 201710692419A CN 107475641 A CN107475641 A CN 107475641A
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- 229910000997 High-speed steel Inorganic materials 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000005096 rolling process Methods 0.000 title abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 83
- 239000010959 steel Substances 0.000 claims abstract description 83
- 239000000203 mixture Substances 0.000 claims abstract description 33
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 15
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 10
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 10
- 238000010791 quenching Methods 0.000 claims abstract description 9
- 230000000171 quenching effect Effects 0.000 claims abstract description 9
- 238000005496 tempering Methods 0.000 claims abstract description 9
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 23
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 20
- 238000002844 melting Methods 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 18
- 239000011651 chromium Substances 0.000 claims description 17
- 238000009750 centrifugal casting Methods 0.000 claims description 9
- 108010038629 Molybdoferredoxin Proteins 0.000 claims description 8
- 229910000805 Pig iron Inorganic materials 0.000 claims description 8
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 claims description 8
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 7
- 238000011282 treatment Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 150000002910 rare earth metals Chemical class 0.000 claims description 5
- 229910000628 Ferrovanadium Inorganic materials 0.000 claims description 4
- -1 ferrovanadium nitride Chemical class 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 239000000161 steel melt Substances 0.000 claims description 3
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 2
- 238000011081 inoculation Methods 0.000 claims description 2
- 238000007499 fusion processing Methods 0.000 claims 1
- 238000007670 refining Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 24
- 229910052799 carbon Inorganic materials 0.000 abstract description 12
- 229910045601 alloy Inorganic materials 0.000 abstract description 9
- 239000000956 alloy Substances 0.000 abstract description 9
- 150000001875 compounds Chemical class 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 13
- 239000000126 substance Substances 0.000 description 13
- 239000013078 crystal Substances 0.000 description 8
- 238000009826 distribution Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 150000001247 metal acetylides Chemical class 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- 235000012721 chromium Nutrition 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011258 core-shell material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052773 Promethium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- VQMWBBYLQSCNPO-UHFFFAOYSA-N promethium atom Chemical compound [Pm] VQMWBBYLQSCNPO-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/56—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
-
- 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
- B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- 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
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The present invention relates to a kind of high-speed steel roll and preparation method thereof, by optimizing high speed composition of steel, pours into a mould body of roll outer layer, intermediate layer and core respectively using centrifugal compound pouring type, then by quenching and double tempering processing, obtain high-speed steel roll；The body of roll outer layer includes following weight percent composition：C：1.5%~2.5%, Si：0.5%~1.5%, Mn：0.5%~1.2%, V：2%~5%, Cr：3%~8%, Ni：0.6%~1%, Mo：2%~5%, W：0.5%~2%, Zr：0.5%~2%, N：0.1%~0.5%, surplus Fe.By high-speed steel roll made from this method, containing the abrasion-proof particles such as V (C, N) are uniformly distributed in body of roll outer layer alloys tissue, refined carbide, and herring-bone form M7C3Carbide content is reduced, and is significantly improved so as to the impact flexibility of roll, mechanical property is also improved.
Description
Technical field
The present invention relates to steel rolling manufacturing technology field, more particularly to a kind of high-speed steel roll and preparation method thereof.
Background technology
High-speed steel roll is mainly prepared using centre spinning at present, the production method of Centrifugal Cast High Speed Steel Roll be by
The high speed molten steel or half steel molten steel as body of roll outer layer and intermediate layer melted is first poured into the metal mold of rotation, waits to coagulate
The molten ductile cast iron or molten steel as core of the roll are poured into after Gu again, and these materials are compound by way of metallurgical binding
Into.
High-speed steel is a kind of steel alloy of complicated component, and wherein alloying element (such as tungsten, molybdenum, chromium, vanadium) content is higher,
Due to containing more high rigidity MC types carbide (Vickers hardness is up to 2000 HV~3200HV) in metallographic structure, so high
Fast steel has the characteristics of hardness is high, red hardness is good and wearability is good.But the carbide in common high-speed steel roll is in mainly
Block, shaft-like, ribbon or petal-shaped distribution, cause high-speed steel roll the shortcomings that poor impact toughness to be present, roll was using
Fatigue crack is easily induced in journey.
At present, in order to ensure the antioxygenic property of roll, for usually contain 3% in the common high-speed steel of casting roll~
8% chromium, and these chromiums are mainly with M7C3、M2The form of C phases is present, and is distributed in herring-bone form, and its tissue is more thick
Greatly, this obdurability to roll has adverse effect, the serious further raising and use for restricting high-speed steel roll performance.Such as
Common high-speed steel roll bar mill splitting rolling K3 frames when there is a situation where it is fast, collapse groove.
The content of the invention
Based on this, it is necessary to it is thick for carbide size in common high-speed steel roll, and distribution of carbides is uneven
Shortcoming, there is provided a kind of preparation method of high-speed steel roll, by adding appropriate nitrogen, vanadium and zirconium in the melt, optimize high-speed steel
Composition so that carbide refinement and reduce the content of herring-bone form carbide in high-speed steel alloy tissue, improved at a high speed so as to reach
The purpose of steel roll combination property.
A kind of preparation method of high-speed steel roll, comprises the following steps：
S001：Melting body of roll outer layer molten steel, intermediate layer half steel molten steel and core molten ductile cast iron respectively, it is stand-by；
The body of roll outer layer molten steel includes following weight percent composition：C：1.5%~2.5%, Si：0.5%~
1.5%, Mn：0.5%~1.2%, V：2%~5%, Cr：3%~8%, Ni：0.6%~1%, Mo：2%~5%, W：
0.5%~2%, Zr：0.5%~2%, N：0.1%~0.5%, and surplus Fe and inevitable trace impurity；
S002：According to centre spinning, using the body of roll outer layer molten steel, intermediate layer half steel molten steel and core spheroidal graphite cast-iron
Molten iron pours into a mould body of roll outer layer, intermediate layer and the core of roll successively, obtains high-speed steel roll strand；
S003：After the high-speed steel roll strand is poured 24h~48h, takes out and be cooled to normal temperature, quenched
With double tempering processing, high-speed steel roll is produced.
The high-speed steel roll that the above method is prepared, is designed by rational composition, is added in the melt a certain amount of
Nitrogen, vanadium, zr element, in combination with the means such as quenching and double tempering processing, make in original high-speed steel alloy tissue petal-shaped or
The MC types such as strip Carbides Transformation is granular M (C, N) type carbide, while reducing herring-bone form M7C3The content of carbide,
So that the impact flexibility of roll significantly improves.
The M of M (C, N) particle is mainly V element, and its structure type is present in the form of core shell structure, and core is based on N element
VN particles, shell is then VC particles.V is one of carbide reinforced element, and C, N in it and steel have extremely strong affinity, with
The corresponding extremely stable carbide of formation.During outer layer molten steel, V and N element preferentially form VN particles, and VN
Heterogeneous nucleation core of the particle as follow-up VC particles, forms new M (C, N) particle, and these M (C, N) type compound particles
It is uniformly distributed in tissue, hence it is evident that suppression crystal grain is grown up and M7C3The movement of chromium carbide crystal boundary, change the growth shape of VC particles
Looks, cause the carbide in alloy structure from original petal-shaped, strip, bulk etc. to granular transformation, so as to refine casting group
Knit, improve distribution of carbides, improve the impact flexibility of roll, solve roll and easily induce asking for fatigue crack in use
Topic.The invigoration effect of crystal grain thinning then realizes that Zr is the formation element of carbide, is being refined by combining the addition of Zr elements
It is again strong deoxidation and denitrogenation element during steel, so as to refine the grainiess of high-speed steel, prevents the red brittleness of steel.
In one of the embodiments, the melting step of the body of roll outer layer molten steel is：By steel scrap, the pig iron, nitrided ferro-chromium,
Nickel plate and molybdenum-iron heating fusing, ferrovanadium nitride, ferrozirconium and ferromanganese are added after molten steel is melting down, and in stokehold according to the body of roll outer layer
After the weight percent composition adjusting component of molten steel, alterant is added at a temperature of 1500 DEG C~1520 DEG C and carries out rotten place
After reason, come out of the stove at 1480 DEG C~1500 DEG C.
Further, deoxidation, Argon are carried out to the molten steel after coming out of the stove and except Slag treatment.Argon processing can make the composition of molten steel
Mixing is more uniform, while promotes Slag inclusion to float, and purifies molten steel melt.
In one of the embodiments, the alterant of the body of roll outer layer molten steel is that granular size is the dilute of the mm of 3mm~10
Native alterant, the addition of the alterant account for the 0.1%~1% of the body of roll outer layer Metal Weight.
In one of the embodiments, in the rare earth alterative comprising cerium subgroup of rare earth elements (lanthanum, cerium, praseodymium, neodymium, promethium,
Samarium, europium) in it is one or more.
In one of the embodiments, the process of the quenching is：The high-speed steel roll strand that will be cooled to normal temperature first adds
Heat is incubated 1h~6h, come out of the stove air-cooled to 400 DEG C~480 DEG C, then be furnace-cooled to room temperature to 950 DEG C~1100 DEG C.
Preferably, the soaking time is 3h~6h.
In one of the embodiments, the process of the double tempering processing is：By the high-speed steel after the quenching
Roll strand is first heated to 500 DEG C~560 DEG C, is incubated 6h~12h, is furnace-cooled to room temperature, then is reheated to 500 DEG C~540 DEG C,
6h~12h is incubated, is furnace-cooled to room temperature.
In one of the embodiments, the melting step of body of roll intermediate layer steel is：By ordinary scrap steel, the pig iron, nickel plate
Melting is carried out with molybdenum-iron, by the composition adjustment molten steel composition of AD160 half steels in GB/T1503-2008 standards to critical field, is gone out
Furnace temperature is controlled at 1500 DEG C~1520 DEG C.
In one of the embodiments, the melting step of the core molten ductile cast iron is：By steel scrap, the pig iron, nickel plate
Heat and melt with molybdenum-iron, add ferrosilicon after molten iron is melting down, adjusting component meets the requirement of spheroidal graphite cast-iron before coming out of the stove, and carries out deoxidation
Processing, comes out of the stove at a temperature of 1460 DEG C~1480 DEG C；Spheroidising is carried out at 1420 DEG C~1450 DEG C after coming out of the stove, and is removed the gred
Processing.
Further, the core molten ductile cast iron includes following weight percent composition：C：3%~3.5%, Si：
2%~3%, Mn：0.2%~0.8%, Cr：0%~0.5%, Ni：0%~0.5%, Mg：0.02%~0.06%, Re：
0.01%~0.03%, remaining is Fe and inevitable impurity.
In one of the embodiments, the nodulizer used in the core molten ductile cast iron spheroidising is that particle is big
Small is 10mm~20mm magnesium-rare earths, and the addition of the magnesium-rare earth accounts for the core molten ductile cast iron weight
1.1%~1.5%.
In one of the embodiments, the casting process of body of roll outer layer is in the step S002：By the body of roll outer layer
Molten steel pours into casting mold the centrifugal casting for carrying out body of roll outer layer, adds 2kg/m after being poured immediately3~8kg/m3O-shaped glass
Slag；The pouring temperature of the body of roll outer layer molten steel is 1400 DEG C~1420 DEG C, and the rotating speed of the centrifugal casting is 500rpm/min
~800rpm/min.
In one of the embodiments, the casting process in body of roll middle level is in the step S002：The body of roll outer layer pours
After note, continue to pour into the intermediate layer half steel molten steel in the casting mold, carry out the centrifugal casting in intermediate layer；The centre
The pouring temperature of layer half steel molten steel is 1450 DEG C~1500 DEG C, and the rotating speed of the centrifugal casting is 500rpm/min~800rpm/
min。
Further, the unilateral cast thickness 15mm~30mm in the intermediate layer.
In one of the embodiments, the casting process of core is in the step S002：The intermediate layer is poured
Afterwards, treat that intermediate layer internal surface temperature is down to 1000 DEG C~1250 DEG C, pour into a mould the core, made in casting process with silico-calcium pregnant with flowing
Educate processing；The pouring temperature of the core molten ductile cast iron is 1360 DEG C~1390 DEG C.
Further, the silico-calcium in the step S002 is the silico-calcium that granular size is 1mm~2mm, and the silico-calcium adds
Dosage accounts for the 0.1%~0.5% of the core molten ductile cast iron weight.
Another object of the present invention is to provide a kind of high-speed steel roll being prepared by the above method, from it is interior outward
Include core, intermediate layer and body of roll outer layer successively；The body of roll outer layer includes following weight percent composition：C：1.5%~
2.5%, Si：0.5%~1.5%, Mn：0.5%~1.2%, V：2%~5%, Cr：3%~8%, Ni：0.6%~1%,
Mo：2%~5%, W：0.5%~2%, Zr：0.5%~2%, N：0.1%~0.5%, and surplus Fe.
The impact flexibility of above-mentioned high-speed steel roll reaches 9.0J/cm2~12.0J/cm2, the hardness of body of roll outer layer reaches 55HRC
More than.
Brief description of the drawings
Fig. 1 is the electron-microscope scanning figure of one embodiment of the invention high-speed steel roll body of roll outer tissue；
Fig. 2 is the electron-microscope scanning comparison diagram of conventional high-speed steels and one embodiment of the invention high-speed steel roll body of roll outer layer；
A is conventional high-speed steels tissue electron microscope photo scanning in figure, and b is the electron-microscope scanning analysis of the Cr elements of conventional high-speed steels
Photo, c are that the electron-microscope scanning of the V element of conventional high-speed steels analyzes photo, and d is outside one embodiment of the invention high-speed steel roll body of roll
The electron microscope photo scanning of layer tissue, e are that the electron-microscope scanning of the Cr elements of one embodiment of the invention high-speed steel analyzes photo, and f is this
Invent the electron-microscope scanning analysis photo of the V element of an embodiment high-speed steel；
Fig. 3 is one embodiment of the invention M (C, N) particles and its C, N, the electron-microscope scanning analysis chart of V element distribution；H in figure
Show M (C, N) particle, i shows that C element is distributed, and j shows that N element is distributed, and k shows that V element is distributed；
Fig. 4 is the structural representation of one embodiment of the invention M (C, N) particle.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the preferred embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more saturating
It is thorough comprehensive.
The embodiment of the present invention is on the basis of original high-speed steel molten by the way of ferrovanadium nitride and ferrozirconium intermediate alloy
Add appropriate nitrogen, vanadium and zr element in body, optimize high speed composition of steel, the forging type poured into a mould using centrifugal compound, i.e., from
The body of roll outer layer and intermediate layer moulding by casting of roll in scheming, then by cold mould and base mould assembling, then by core spheroidal graphite cast-iron
Moulding by casting, gained roll strand finally cause high-speed steel alloy to molten iron after quenching and double tempering is handled in the quiescent state
Carbide refinement and the content of herring-bone form carbide is reduced in tissue, so as to reach the mesh for improving high-speed steel roll combination property
's.
Embodiment 1
Body of roll outer layer molten steel, intermediate layer molten steel and the core ductile iron of melting roll are distinguished using three intermediate frequency furnaces
Water, pours into a mould Φ 380mm × 650mm composite rolls, and concrete technology is as follows：
(1) body of roll outer layer molten steel：
The raw material of body of roll outer layer are matched according to the composition of table 1, by the ordinary scrap steel weighed up, the pig iron, chromium nitride
Iron, nickel plate and molybdenum-iron heating fusing, with pig up, add ferrovanadium nitride, ferrozirconium and ferromanganese, sampling is Spectramed after molten steel dissolved clarification
Test composition and adjusting component it is qualified after, thermometric, cerium group of the bell jar process by granularity for 3mm~10mm is used at 1500 DEG C~1520 DEG C
Rare earth alterative, which is immersed in above-mentioned molten steel, carries out Metamorphism treatment, and deteriorating time is 6min~8min, thermometric after going bad, at 1480 DEG C
~1500 DEG C are come out of the stove；Aluminium wire is placed in advance in casting ladle, then uses top argon-blowing device to carry out Argon processing to molten steel, makes molten steel
Composition mixing is more uniform, while promotes Slag inclusion to float, and purifies molten steel melt, then melt is stood, except Slag treatment, covers
Lid heat preserving agent, it is to be cast.The addition of the rare earth alterative accounts for the 0.1%~1.0% of body of roll outer layer Metal Weight.
The chemical composition (weight %) of the body of roll outer layer of 1 embodiment of table 1
| Element | C | Si | Mn | Cr | Ni | Mo | V | W | N | Zr | Fe |
| Body of roll outer layer | 2.0 | 1.19 | 0.98 | 5.0 | 0.65 | 2.8 | 3.6 | 1.4 | 0.3 | 1.0 | Surplus |
(2) intermediate layer molten steel
By ordinary scrap steel, the pig iron, nickel plate, molybdenum-iron melting, by half steel AD160 composition models in GB/T1503-2008 standards
Enclose, adjustment half steel molten steel composition to acceptability limit (being specifically shown in table 2 below), tapping temperature is controlled at 1500 DEG C~1520 DEG C.
The chemical composition (weight %) in the body of roll intermediate layer of table 2
| Element | C | Si | Mn | Cr | Mo | Ni | Fe |
| Intermediate layer | 1.5~1.7 | 0.3~0.6 | 0.7~1.1 | 0.8~1.2 | 0.2~0.6 | 0~0.5% | Surplus |
(3) melting and spheroidising of internal layer molten steel：
By ordinary scrap steel, the pig iron, nickel plate, molybdenum-iron heating fusing, ferrosilicon is added after molten steel is melting down, composition is detected and is adjusted to
Divide the scope of each composition into table 3 below；Add aluminium ingot and deoxidation treatment is made to molten steel, be 1460 DEG C~1480 DEG C in temperature, come out of the stove；
Ditch is built in casting ladle, is pre-placed nodulizer rare earth magnesium and Antaciron, and melts down iron filings with 10kg~20kg and covers, nodularization temperature
Control is done except Slag treatment at 1420 DEG C~1450 DEG C, to be cast with heat preserving agent pearlite insulation.
Core of the roll ductile iron water constituent see the table below 3.
The chemical composition (weight %) of the core of the roll of table 3
| Element | C | Si | Mn | Cr | Ni | Mg | Re | Fe |
| Body of roll outer layer | 3.0~3.5 | 2.0~3.0 | 0.2~0.8 | 0~0.5 | 0~0.5 | 0.02~0.06 | 0.01~0.03 | Surplus |
(4) centrifugal casting：
Cold type inner wall is coated with water base zircon flour coating, paint thickness is 2mm~3mm, and 6h is preheated at 200 DEG C~350 DEG C
~15h, it is placed in after drying on centrifuge.
Outer layer molten steel is poured into a mould in cold mould, pouring temperature is 1400 DEG C~1420 DEG C, after being poured, is existed immediately
2kg/m is added in casting mold3~8kg/m3O-shaped glass dregs carry out anti-oxidation processing.Centrifuge is with constant speed 650rmp/min speed
Spend centrifugal rotation 5~7 minutes, then pour into a mould intermediate layer molten steel, pouring temperature controls 1450 DEG C~1470 DEG C, continue rotation to 12~
15 minutes (the cast duration of different size model number rolls is different), treats that roll inner wall temperature drops to 1050 DEG C or so, stops
Only centrifuge rotates, to obtain good binder course.After centrifuge stalling, cold mould is hung to cast melt pit and bottom rapidly with driving
Seat mould assembling, and install rising head and tundish (for mould assembling time control within 3 minutes, to prevent that the time is oversize, exospheric temperature is too low
Cause with reference to bad)；After the completion of mould assembling, preprepared molten ductile cast iron is poured into a mould, controls the pouring temperature to be
1360 DEG C~1390 DEG C, the silico-calcium particle for being 1mm~2mm with particle diameter in casting process carries out current-following inoculation processing, with refinement
Crystal grain, improves roll neck intensity, and the addition of silico-calcium accounts for the 0.1%~0.5% of molten iron gross weight.
(5) the unpacking and heat treatment of roll：
Roll casting complete is unpacked (or cold mould hull-skin temperature drops to less than 100 DEG C) after 48 hours, is taken out roll, will be rolled
Roller is placed in slow cooling in thermal insulation pit, and flash and burr are cleared up after being cooled to normal temperature.Roll is heated to 1000 DEG C after rough turn, insulation
3 hours, rapid air-cooled with rotation blower fan after coming out of the stove, cooling body of roll surface temperature returns in stove slow cooling to room to 430 DEG C or so
Temperature；Reheat and be warming up to tempering heat treatment of 550 DEG C of progress, be incubated 12 hours, be furnace-cooled to room temperature；Heating is reheated again
To 520 DEG C of progress double tempering heat treatments, 12 hours are incubated, is furnace-cooled to room temperature.
Roll by quenching and double tempering heat treatment, can improve and eliminate roll in casting process caused by it is each
Kind tissue defects and residual stress, the toughness of roll is further improved, prevents roll from occurring deforming in use, ftractureing
Phenomenon.
(6) defined size and precision are refined to by drawing by the good roll of temper.
Embodiment 2
Body of roll outer layer molten steel, intermediate layer molten steel and the core ductile iron of melting roll are distinguished using three intermediate frequency furnaces
Water, Φ 380mm × 650mm composite rolls are poured into a mould, concrete technology and embodiment 1 are essentially identical, and difference is, body of roll outer layer
Chemical composition it is different, refer to table 4 below.
The chemical composition (weight %) of the body of roll outer layer of 4 embodiment of table 2
| Element | C | Si | Mn | Cr | Ni | Mo | V | W | N | Zr | Fe |
| Body of roll outer layer | 2.1 | 1.5 | 1.0 | 5.0 | 0.7 | 2.9 | 5.0 | 1.5 | 0.3 | 1.5 | Surplus |
Embodiment 3
Body of roll outer layer molten steel, intermediate layer molten steel and the core ductile iron of melting roll are distinguished using three intermediate frequency furnaces
Water, Φ 380mm × 650mm composite rolls are poured into a mould, concrete technology and embodiment 1 are essentially identical, and difference is, body of roll outer layer
Chemical composition it is different, refer to table 5 below.
The chemical composition (weight %) of the body of roll outer layer of 5 embodiment of table 3
| Element | C | Si | Mn | Cr | Ni | Mo | V | W | N | Zr | Fe |
| Body of roll outer layer | 1.5 | 0.5 | 0.5 | 3.0 | 0.6 | 2.0 | 2.0 | 0.5 | 0.1 | 0.5 | Surplus |
Embodiment 4
Body of roll outer layer molten steel, intermediate layer molten steel and the core ductile iron of melting roll are distinguished using three intermediate frequency furnaces
Water, Φ 380mm × 650mm composite rolls are poured into a mould, concrete technology and embodiment 1 are essentially identical, and difference is, body of roll outer layer
Chemical composition it is different, refer to table 6 below.
The chemical composition (weight %) of the body of roll outer layer of 6 embodiment of table 4
| Element | C | Si | Mn | Cr | Ni | Mo | V | W | N | Zr | Fe |
| Body of roll outer layer | 2.5 | 1.5 | 1.2 | 8.0 | 1.0 | 5.0 | 5.0 | 2.0 | 0.5 | 2.0 | Surplus |
Comparative example 1
Comparative example 1 is conventional high chromium steel roller, and its casting technique is substantially the same manner as Example 1, and difference is, the body of roll
The chemical composition of outer layer is different from embodiment 1, and not nitrogenous and zirconium in comparative example 1, refers to table 7 below.
The chemical component table (weight %) of the conventional high chromium steel roller body of roll of table 7
| Element | C | Si | Mn | Cr | Ni | Mo | V | W | Fe |
| Body of roll outer layer | 2.0 | 1.19 | 0.98 | 5.0 | 0.65 | 2.8 | 5.0 | 1.5 | Surplus |
Comparative example 2
Body of roll outer layer molten steel, intermediate layer molten steel and the core ductile iron of melting roll are distinguished using three intermediate frequency furnaces
Water, Φ 330mm × 600mm composite rolls are poured into a mould, concrete technology and embodiment 1 are essentially identical, and difference is, body of roll outer layer
Chemical composition it is different, and be free of zirconium, refer to table 8 below.
The chemical component table (weight %) of the roll barrel of 8 comparative example of table 2
| Element | C | Si | Mn | Cr | Ni | Mo | V | W | N | Fe |
| Body of roll outer layer | 2.1 | 1.2 | 1.0 | 5.2 | 0.6 | 3.0 | 5.1 | 1.5 | 0.3 | Surplus |
Performance test
1st, hardness is carried out to the roll of embodiment 1~4 and the gained of comparative example 1~2 and impact flexibility detects；
Hardness determination：Lip river is carried out to sample using diamond penetrator on HBRVU -187.5 type Michael Burawoy optics hardometers
Family name's hardness (HRC) is tested, and added load is 1471N, at least takes hardness number of the average value of 5 tests as each sample.
Impact flexibility detects：Impact flexibility is carried out by GB/T 229-2007 metal material Charpy pendulum impact tests method
Detection, sample use 10 × 10 × 55mm of non-notch sample.
2nd, electron-microscope scanning is carried out to the body of roll outer layer of embodiment 1 and the roll of the gained of comparative example 1, analyzes high-speed steel alloy group
C, N, the distribution of V element in structural form and the body of roll outer layer of embodiment 1 are knitted, refers to Fig. 1~4.
Testing result
The hardness and impact flexibility testing result of embodiment 1~3 and the gained roll of comparative example 1~2 see the table below 9.
The mechanical property of the roll barrel of table 9
| Hardness (HRC) | Impact flexibility (J/cm2) | |
| Comparative example 1 | 56.2 | 6.6 |
| Comparative example 2 | 58.9 | 8.8 |
| Embodiment 1 | 61.8 | 9.7 |
| Embodiment 2 | 62.1 | 10.2 |
| Embodiment 3 | 60.1 | 9.1 |
| Embodiment 4 | 61.2 | 9.4 |
As can be seen that adding the embodiment 1~4 of appropriate nitrogen and zr element in the melt from upper table 8 so that high-speed steel
Composition is optimized, and is compared the comparative example 1 for not adding nitrogen and zr element or be with the addition of nitrogen, the comparative example 2 without adding zirconium,
The impact flexibility of roll is significantly improved, and the hardness of the body of roll is also improved.
As shown in figure 1, by carrying out electron-microscope scanning analysis to the high-speed steel alloy tissue of the skin of the roll of embodiment 2, find
Carbide in tissue is in granular form, is uniformly distributed, and the carbide in the body of roll outer tissue of comparative example 1 is in petal (such as Fig. 2
Shown in middle a), illustrate by adding nitrogen, zr element, to change the shape of carbide, make carbide from original petal-shaped to
Granular transformation, the crystal structure of high-speed steel alloy is refined, improved the distribution of carbide, so as to significantly improve rushing for roll
Toughness is hit, mechanical property is also improved.
Secondly, as shown in b and e in Fig. 2, analyses of the Cr in Structure of High Speed Steel without element is understood, the body of roll outer layer of embodiment 2
The M being distributed in tissue crystal boundary7C3The content of carbide has also been reduced and refined, because crystal boundary distribution herring-bone form, thick M7C3
It is often mutually the position of crack initiation during material impact, so M7C3The reduction of phase is advantageous to carrying for Fracture of Material
It is high.
As shown in c and f in Fig. 2, pass through the analysis to V element in Structure of High Speed Steel, the body of roll outer layer of embodiment 2
V element is evenly distributed in tissue crystal boundary.Further, the particle comprising V element is analyzed, as shown in figure 3, the present invention is real
The M for applying M (C, N) particle in example 2 is mainly V element, and its structure type is present in the form of core shell structure, as shown in figure 4, core
The heart is the VN particles based on nitrogen, and shell is VC particles, by adding nitrogen, hot conditions of the nitrogen in molten steel
Under preferentially form VN particles, core of the VN particles as the heterogeneous forming core of follow-up VC particles, change the growth shapes of VC particles
Looks, cause to granular MC to change from original petal-shaped, strip MC, so as to refine cast structure, improve distribution of carbides, carry
The impact flexibility of high roll.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of preparation method of high-speed steel roll, it is characterised in that comprise the following steps：
S001：Melting body of roll outer layer molten steel, intermediate layer half steel molten steel and core molten ductile cast iron respectively, it is stand-by；
The body of roll outer layer molten steel includes following weight percent composition：C：1.5%~2.5%, Si：0.5%~1.5%, Mn：
0.5%~1.2%, V：2%~5%, Cr：3%~8%, Ni：0.6%~1%, Mo：2%~5%, W：0.5%~2%,
Zr：0.5%~2%, N：0.1%~0.5%, and surplus Fe；
S002：According to centre spinning, using the body of roll outer layer molten steel, intermediate layer half steel molten steel and core molten ductile cast iron
Body of roll outer layer, intermediate layer and the core of roll are poured into a mould successively, obtain high-speed steel roll strand；
S003：After the high-speed steel roll strand is poured 24h~48h, takes out and be cooled to normal temperature, carry out quenching and two
Secondary temper；Produce high-speed steel roll.
2. the preparation method of high-speed steel roll according to claim 1, it is characterised in that the body of roll outer layer molten steel melts
Refining process is：Steel scrap, the pig iron, nitrided ferro-chromium, nickel plate and molybdenum-iron are heated and melted, ferrovanadium nitride, ferrozirconium are added after molten steel is melting down
And ferromanganese, and after stokehold is according to the weight percent composition adjusting component of the body of roll outer layer molten steel, 1500 DEG C~1520
After alterant progress Metamorphism treatment is added at a temperature of DEG C, come out of the stove at 1480 DEG C~1500 DEG C.
3. the preparation method of high-speed steel roll according to claim 2, it is characterised in that the alterant is granular size
For 3mm~10mm rare earth alterative, the addition of the alterant accounts for the 0.1%~1% of the body of roll outer layer Metal Weight.
4. the preparation method of high-speed steel roll according to claim 1, it is characterised in that the process of the quenching is：Will
The high-speed steel roll strand for being cooled to normal temperature is first heated to 950 DEG C~1100 DEG C, is incubated 1h~6h, comes out of the stove air-cooled to 400
DEG C~480 DEG C, then it is furnace-cooled to room temperature.
5. the preparation method of high-speed steel roll according to claim 1, it is characterised in that the mistake of the double tempering processing
Cheng Wei：High-speed steel roll strand after the quenching is first heated to 500 DEG C~560 DEG C, 6h~12h is incubated, is furnace-cooled to
Room temperature, then 500 DEG C~540 DEG C are reheated to, 6h~12h is incubated, is furnace-cooled to room temperature.
6. the preparation method of high-speed steel roll according to claim 1, it is characterised in that the core molten ductile cast iron
Fusion process be：Steel scrap, the pig iron, nickel plate and molybdenum-iron are heated and melted, ferrosilicon is added after molten iron is melting down, deoxidation is carried out before coming out of the stove
Processing, comes out of the stove at a temperature of 1460 DEG C~1480 DEG C；Spheroidising is carried out at 1420 DEG C~1450 DEG C after coming out of the stove, and is removed the gred
Processing.
7. the preparation method of high-speed steel roll according to claim 1, it is characterised in that in the step S002 outside the body of roll
Layer casting process be：The body of roll outer layer molten steel is poured into casting mold to the centrifugal casting for carrying out body of roll outer layer, after being poured
2kg/m is added immediately3~8kg/m3O-shaped glass dregs；The pouring temperature of the body of roll outer layer molten steel is 1400 DEG C~1420 DEG C,
The rotating speed of the centrifugal casting is 500rpm/min~800rpm/min.
8. the preparation method of high-speed steel roll according to claim 1, it is characterised in that the step S002 intermediate layers
Casting process is：After the body of roll outer layer is poured, continue to pour into the intermediate layer half steel molten steel in the casting mold, carry out
The centrifugal casting in intermediate layer；The pouring temperature of the intermediate layer half steel molten steel is 1450 DEG C~1500 DEG C, the centrifugal casting
Rotating speed is 500rpm/min~800rpm/min.
9. the preparation method of the high-speed steel roll according to any one of claim 1~8, it is characterised in that the step
The casting process of core is in S002：After the intermediate layer is poured, treat intermediate layer internal surface temperature be down to 1000 DEG C~
1250 DEG C, pour into a mould the core, make current-following inoculation processing with silico-calcium in casting process；The cast of the core molten ductile cast iron
Temperature is 1360 DEG C~1390 DEG C.
10. the high-speed steel roll that any one of claim 1~9 preparation method is prepared.
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| CN113249658A (en) * | 2021-07-06 | 2021-08-13 | 常州凯达重工科技有限公司 | High-speed steel vertical roll ring and preparation method thereof |
| CN115319033A (en) * | 2022-07-13 | 2022-11-11 | 山西阿克斯太钢轧辊有限公司 | Stainless steel composite ingot and vertical centrifugal casting process thereof |
| CN115319033B (en) * | 2022-07-13 | 2023-11-28 | 山西阿克斯太钢轧辊有限公司 | Stainless steel composite ingot and vertical centrifugal casting process thereof |
| CN115896636A (en) * | 2022-12-22 | 2023-04-04 | 石家庄石特轧辊有限公司 | Preparation method of high-hardness roller |
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Address after: No. 393, Section 3, Jinxing North Road, Wangcheng Economic and Technological Development Zone, Changsha, Hunan 410219 Patentee after: Chang Hi-Tech New Technology Co.,Ltd. Country or region after: China Address before: 410000 No. 393, section 3, Jinxing North Road, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province Patentee before: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR GROUP Co.,Ltd. Country or region before: China |