CN107511398A - A kind of strong exhibition roll of wear-resistant type strip - Google Patents
A kind of strong exhibition roll of wear-resistant type strip Download PDFInfo
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- CN107511398A CN107511398A CN201710675949.5A CN201710675949A CN107511398A CN 107511398 A CN107511398 A CN 107511398A CN 201710675949 A CN201710675949 A CN 201710675949A CN 107511398 A CN107511398 A CN 107511398A
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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
- B21B27/03—Sleeved rolls
- B21B27/032—Rolls for sheets or strips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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Abstract
Roll is opened up with strong the invention discloses a kind of wear-resistant type strip, belongs to ribbon steel production equipment field.The roll working layer uses, containing C2.0 3.0, Si0.4 1.0, Mn0.6 1.0, Cr8 32, Ni0.8 1.8, Mo0.8 2.0, V0.2 1.2 high Cr-Mo-V system alloy material；Roll shape uses sinusoidal curve.The roll is used for ribbon steel pony roughing mill, has and broadening efficiency high is forced to band steel blank, steel billet internal rarefaction is eliminated, improves board quality effect；The superpower abrasion resistance of the roll, line duration are 23 times of traditional NiCrMo rolls；The good thermal crack resistant of the roll, the antifatigue characteristic that loses flesh, its lower more traditional NiCrMo roll of the locomotive amount of repairing reduce 40%, and board surface quality has clear improvement；Comprehensive service life is improved to more than 3 times of traditional roll, and comprehensive ton steel cost reduces by 30%.
Description
Technical field
Roll is opened up with strong the present invention relates to a kind of wear-resistant type strip, belongs to ribbon steel production equipment field.
Background technology
The existing strong exhibition roller of tradition, from roll material, generally use contains C3.0-3.5, Si0.5-1.5, Mn0.4-
0.9th, Cr0.5-1.5, Ni0.6-4.0, Mo0.2-0.6, Mg0-0.08 NiCrMo alloy nodular cast irons or infinitely chilled ductile cast iron
Cladding material, formed using monoblock cast or centrifugal composite casting, traditional NiCrMo alloy rollers tensile strength generally≤
350MPa。
Traditional cast iron material contains in the strong exhibition rolling system of deep hole type for roughing, no matter spheroidal graphite cast-iron or indefinite chill
Cast iron materials, the graphite phase constitution in its outer tissue containing 1-3%；It is past because graphite is had a great influence by cooling velocity
Toward outer layer graphite structure is partially thin, quantity of graphite is on the low side, with the reduction of casting mold cooling capacity, with change in depth quantity of graphite below top layer
Increase, graphite size becomes thick.Easily there is skidding from performance upper epidermis to be not easy to bite, internal layer hardness reduce wearability, thermal crack resistant,
The anti-coarse ability of texturing declines, and causes its Comprehensive service life to substantially reduce.
Traditional cast iron material, which is used for the problem of roughing strong exhibition roller that contains deep hole type is primarily present in, is：Pass surface
Hot tearing is serious, lost flesh in pass frequently, the roll loaded vehicle amount of repairing is big, line duration is short, roll shape holding capacity is poor, comprehensive ton steel cost
Consumption is high.
The high alloy roller such as the roller of Conventional wide band steel two and four-high mill cast steel with high chromium, semi-high speed steel, tool steel, it is used
Environment, usually single chassis reversible rolling, its mill speed is fast (1.5-3m/s), good cooling results；Such milling train roll is straight
The larger 1000-1200mm in footpath, nip angle is relatively small (15-22 °), there is preferable biting property to stocking, and generally in the frame
Before be furnished with two roller rollings on edge use, to steel billet have clamping by force to feeding function, therefore high alloy roller is not deposited on broad strip mill
It is not easy to bite problem in skidding.For such high alloy roll phosphorus content generally in 0.4-1.5%, matrix control is tempered martensite
Body, hardness control 70-80HSD, because of faster mill speed and good cooler environment, therefore the problems such as hot tearing is also not present.Cause
This, traditional high alloy roll (nip angle 20-23%, rolls the low 0.4- of speed under the ribbon steel pony roughing mill environment of continuous rolling
The small 550-580mm of 1.0m/s, roll diameter of roller) 1. can not solve in work roll cooling skid, 2. low speed rolling hot tearing, 3. even low speed
The roll that rolled bands are come rapidly is heated up stress roll breakage a series of problems of appearance, therefore ribbon steel production is particularly opened up by force for roughing
Environment continues to use traditional NiCrMo Nodular cast iron materials with roll always.
Traditional strong exhibition roller roll shape, the trapezoidal convexity pass of generally use or convexity compound circular arc pass, mainly ask existing for it
Topic is that single pass broadening efficiency is low (1.5-3%), it usually needs broadening frame quantity it is more (5 passages)；Roll design with
Experience is carried out, and the setting process of different rolling specs needs test of many times to grope, and the cycle is long, efficiency is low；Steel billet center is original to dredge
Pine can not be eliminated in optimum temperature section, and loose inherent cause is not easy in, finish rolling frame eliminates etc..
The content of the invention
In view of above-mentioned existing traditional NiCrMo grain rolls, traditional four-roller wide flat steel high alloy roll and roller curve design
Many deficiencies Deng existing for, with reference to inventor's research to roll manufacture material and Rolling production environmental concerns for a long time, based on height
The advantages of alloy material wearability is high, hardness drop is small, theoretically captures high alloy roller in the ultralow speed rolling of ribbon steel roughing
Hot tearing, roll neck are small without clamping under the environment such as rolling on edge under environment, fried roller, the fracture for being not easy to bite, rapidly thermal shock easily occurs of skidding,
And the strong exhibition low problem of roller roll shape single pass broadening rate of tradition.From biting property, thermal crack resistant structure stability, design has
The good matrix for using characteristic, while the high abrasion fulcrum formed using the disperse of superelevation alloy, Precipitation, and height are closed
The characteristic such as oxide-film of densification is formed under golden high temperature, realizes that roll well bites, thermal crack resistant and takes into account high abrasion resistance.From
And it is achieved a kind of high wear-resistant new strong exhibition roller suitable for mill coil pony roughing mill.
Present invention firstly provides a kind of wear-resistant type strip high Cr-Mo-V is used with strong exhibition roll, outer layer (working lining) material
It is alloy material, the high Cr-Mo-V system alloy material contains C2.0-3.0, Si0.4-1.0, Mn0.6- as mass fraction
1.0、Cr8-32、Ni0.8-1.8、Mo0.8-2.0、V0.2-1.2；Its roll shape is y=a × [sin (x × b-c)+d] just profound song
Line, a, b, c, d are constant, and x is pass axial length variable, and its x maximum occurrences scope can be according to specific rolled products width
Specification adjusts between 190-350；Y pass heights are the just profound function changed with pass length axle variable x.
By the matched design of the science of alloying element, meet that roughing use environment lower roll surface can form hard Fe-Cr
Complex oxide film, and the wear-resisting phase of Cr-Mo-V alloy carbides of ratio enough, realize material this height antiwear characteristics.Using y
The high wear-resistant strong exhibition roller of=a × [sin (x × b-c)+d] sinusoidal curve roll shape, solve traditional high alloy roll and be not easy to sting
Steel, slippage problems, while solve that traditional NiCrMo ductile iron rolls line duration is short, not wear-resisting problem, broadening efficiency is carried
(single pass broadening rate improves 3-5 times) is risen, line duration extends 1-2 times, and Comprehensive service life is more than 3 times of traditional roll,
Decline more than 30% in frame synthesis ton steel roll consuming cost.
The present invention also provides a kind of method for preparing the wear-resistant type strip and using strong exhibition roll, comprises the following steps：
(1) rough-cast：Smelt outer floor height Cr-Mo-V system alloying metal liquid, centrifugal casting outer layer, cast intermediate layer, the heart
Portion, obtain roller blank；
(2) it is heat-treated：After cooling down roughing, it is heat-treated, Cr, Mo, V alloy is fully dissolved in austenite and was formed
After saturation austenite, air cooling makes Cr, Mo in supersaturated austenite, V alloy element be separated out with secondary alloy carbide form precipitation
Afterwards, it is tempered, eliminates heat-treated sturcture transformation stress and thermal stress；Roll hardness index and residual austenite are detected after being cooled to room temperature
Body index, control roll surface hardness range 58-63HSD, retained austenite≤3%；
(3) finish.
The tapping temperature of the outer floor height Cr-Mo-V system alloying metal liquid through smelting is 1520-1580 DEG C in the step (1).
Floor height Cr-Mo-V system of step (1) China and foreign countries alloying metal liquid carries out Metamorphism treatment when being come out of the stove after smelting：Came out of the stove
Journey pours the 0.2-0.5% of molten metal weight particle diameter 0.3-2mm vanadium alloy alterant particle, is sufficiently stirred with metal stream.
The bag pouring temperature that rises of floor height Cr-Mo-V system of step (1) China and foreign countries alloying metal liquid is 1400-1450 DEG C.
When outer layer inner surface molten metal temperature is 1120-1180 DEG C in the step (1), intermediate layer is poured into a mould.The centre
Layer molten metal chemical composition is by mass fraction composition (%)：C0.8-1.5、Si0.4-0.8、Mn0.4-0.8、P≤0.03、S≤
0.02、Cr0-0.2、Ni0.1-0.8、Mo0-0.2；In the pouring temperature T of intermediate layer=1500-1580 DEG C.
In the step (1) behind cast intermediate layer, during T1=1100-1160 DEG C of metallic intermediate layer liquid internal surface temperature, pour
Enter center portion high-strength alloy spheroidal graphite cast-iron mandrel position molten metal；High-strength alloy spheroidal graphite cast-iron mandrel position molten metal chemistry into
Divide by mass fraction composition (%)：C2.8-3.5、Si2.4-2.8、Mn0.4-1.0、P≤0.05、S≤0.02、Cr0-0.2、
Ni0.8-1.5、Mo0-0.2；T2=1380-1430 DEG C of center portion pouring metal melt temperature.
Technology for Heating Processing in the step (2) can be heated to 650 DEG C from room temperature with≤15 DEG C/h programming rates, protect
After warm 3-6 hours samming, it is rapidly heated with 30-50 DEG C/h programming rates equal to 950-1000 DEG C of austenitizing, insulation 5-8 hours
Temperature makes Cr, Mo, V alloy be fully dissolved in austenite after formation supersaturated austenite, opens heat treatment fire door and is air-cooled to 780-830
DEG C, after insulation 5-8 hours make Cr, Mo in supersaturated austenite, V alloy element be separated out with secondary alloy carbide form precipitation,
The quick cooling (quenching) of blowing melts down 530-560 DEG C of tempering of progress, is incubated 15-25 hours, eliminates heat treatment to 420-480 DEG C
Structural transformation stress and thermal stress.
Preparation method provided by the invention ensure that the synthesis performance of outer floor height, while avoid the alloy of outer floor height
The problems such as roll neck penalty come to center portion diffusion zone and the roll breakage brought, occurs；Special high-temperature heat treatment technology is (high
Austenitizing temperature make the supersaturated alloying element such as substantial amounts of Cr, Mo, V dissolve among high temperature austenite+subsequent high temperature precipitation is (difficult to understand
Family name's body destabilization) heat treatment, a large amount of Cr, Mo, V alloy carbide is separated out from oversaturated austenitic matrix+is subsequently taken off
Unsaturation austenite quenching+tempering after molten, obtain containing a large amount of disperse Cr, Mo, V alloy carbide, have room temperature it is good
Stability, obdurability and the superfine pearlitic structrure (secondary troostite) of one；Body of roll working lining hardness range 58-65HSD, work
Make layer hardness without drop；High-strength tenacity spheroidal graphite cast-iron roll shaft tensile strength >=550Mpa.
The strong exhibition roller of wear-resistant type strip provided by the invention, its outer tissue be with high-strength tenacity, good biting property, anti-
A large amount of Cr, Mo, the secondary carbonizations of V alloy are inlayed on superfine pearlite (secondary troostite) matrix of hot tearing structure stability
Thing+total amount is the high hard wear-resistant Cr of 20-25%7C3The line and staff control of type carbide, body of roll macrohardness resist in 58-65HSD, roll neck
Tensile strength >=550Mpa.The anti-wear performance of high wear-resistant outer layer is embodied in, and continuous line duration is the 2-3 of traditional NiCrMo rolls
Times；Good heat crack resistance is taken into account simultaneously, and roll loaded vehicle reparation amount reduces 40% than traditional NiCrMo rolls；And have good
The characteristic that bites solve traditional high alloy roller slippage problems；Without peeling, roll breakage accident；Comprehensive service life is traditional NiCrMo
More than 3 times of roll.It is used for rolling narrow strip with strong exhibition roller using wear-resistant type strip provided by the invention, has height to original blank
Force spreading ratio, single pass broadening rate 7-8%；To the compacting of stocking center, blank center porosity efficiency high is eliminated, roughing eliminates
Rate 98.5%, improve production board flaw detection qualification rate.The strong exhibition roller of the wear-resistant type strip of the present invention, be particularly suitable for use in roller diameter Ф
450~600mm, barrel length L500~650mm the roller roughing metallurgical casting roll of ribbon steel two.
In summary, a kind of wear-resistant type strip of the present invention is had any different in the distinct feature of traditional roll with strong exhibition roller, makes it
Becoming a has great creative new roller.The strong exhibition roller of wear-resistant type strip provided by the invention has suitable existing
Ribbon steel production status condition, there is good biting property (anti-skidding), hot-cracking resistance (low hot tearing sensitiveness), fatigue resistance
(anti-to lose flesh, resist coarse texturing), high-wearing feature, eliminate the advantages of hardness drop etc.；Take into account high force spreading efficiency simultaneously, disappear
Except the heredity of strand center porosity is to the adverse effect of sheet material；Postpone line duration, improve steel rolling online assignment efficiency, improve sheet material
Inherent quality, reduce operating cost.The roll can be widely used for arrowband steel rolling field, for continuous casting billet blank specification it is few, roll
Material specification is more, needs to adjust the field of width of steel band by rolling force spreading；For the roller roughing continuous rolling machine of ribbon steel two
Group, more particularly to requiring that stocking inherent quality is high
Brief description of the drawings
Fig. 1, a kind of strong exhibition roll structure schematic diagram of wear-resistant type strip.
Fig. 2, a kind of strong exhibition roller roll shape sinusoidal curve schematic diagram of wear-resistant type strip.
Fig. 3, wear-resistant type strip open up by force roller and are compacted schematic diagram to blank broadening and center.
Fig. 4, a kind of wear-resistant type strip open up by force roller 500X matrix diffusion carbide schematic illustration of tissue.
Fig. 5, a kind of wear-resistant type strip open up by force under roller roll surface material object photo after machine.
The strong exhibition roller cast schematic diagram of Fig. 6, a kind of wear-resistant type strip, high CrMoV alloy outers are poured into a mould, intermediate layer is poured into a mould,
Mould assembling cast, unpack.
Fig. 7, a kind of strong exhibition roller Technology for Heating Processing schematic diagram of wear-resistant type strip.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to according to the wear-resistant strip of height proposed by the present invention strong its embodiment of exhibition roller, structure, feature
And effect, describe in detail as after.
By the explanation of embodiment, when technological means and the work(that predetermined purpose is taken can be reached to the present invention
Effect be able to more to go deep into it is specific must understand, but institute's accompanying drawing is only to provide and used with reference to explanation, is not used for being subject to the present invention
Limitation.
Embodiment 1：A kind of high wear-resistant strong exhibition roller manufacture method (one)
Cast schematic diagram shown in Figure 6, casting process are as follows：
1) outer layer CrMoV antifriction alloys chemical composition is by mass fraction composition (%)：C2.0-3.0、Si0.4-1.0、
Mn0.6-1.0, Cr8-32, Ni0.8-1.8, Mo0.8-2.0, V0.2-1.2 requirement, carry out furnace charge preparation；
2) smelted using intermediate frequency furnace, adjustment chemical composition in implementing process requirement by limiting；
3) outer floor height CrMoV alloying metals liquid tapping temperature T is controlledGo out=1520-1580 DEG C；
4) outer floor height CrMoV alloying metal liquid is come out of the stove Metamorphism treatment：Process of coming out of the stove pours molten metal weight with metal stream
0.2-0.5% vanadium alloys (mass fraction containing vanadium is 50~80%) alterant 0.3-2mm particles, are sufficiently stirred；
5) bag cast is played：The outer floor height CrMoV alloying metals liquid pouring temperature T of controlPour=1400-1450 DEG C, by outer floor height
CrMoV alloying metal liquid is poured into the centrifugal casting mould in rotating at a high speed, and molten metal inner surface spills into anti-oxidation glass protection slag；
6) inner surface molten metal temperature T is detectedOutside=1120-1180 DEG C when, pour into mistake among 20-40mm in outer layer inner surface
Cross a layer molten metal；
7) metallic intermediate layer liquid is poured into a mould：
Metallic intermediate layer liquid chemical composition is by mass fraction composition (%)：C0.8-1.5、Si0.4-0.8、Mn0.4-0.8、P
≤0.03、S≤0.02、Cr0-0.2、Ni0.1-0.8、Mo0-0.2；Intermediate layer pouring temperature TIn=1500-1580 DEG C；
8) metallic intermediate layer liquid internal surface temperature T is detected1=1100-1160 DEG C when, by nowel (base member case), band outer layer and
The centrifugal casting mould in intermediate layer, top box (rising head case) carry out charge-coupled case, pour into center portion high-strength alloy spheroidal graphite cast-iron mandrel position gold
Belong to liquid；
9) high-strength alloy spheroidal graphite cast-iron mandrel position molten metal fills out core cast, high-strength alloy spheroidal graphite cast-iron mandrel position
Molten metal chemical composition is by mass fraction composition (%)：C2.8-3.5、Si2.4-2.8、Mn0.4-1.0、P≤0.05、S≤
0.02、Cr0-0.2、Ni0.8-1.5、Mo0-0.2；Center portion pouring metal melt temperature T2=1380-1430 DEG C；
10) centrifugal casting roll blank is unpacked, and casting roll is unpacked through naturally cooling to temperature≤100 DEG C in casting mold；It is high
Wear-resistant strong exhibition roller rough-cast is completed.
Embodiment 2：A kind of high wear-resistant strong exhibition roller manufacture method (two)
11) high wear-resistant strong exhibition roller casting roll blank removes deburring, burr, removes casting scab etc. through leveling processing；
12) after roller blank naturally cools to room temperature, as cast condition roll stays heat treatment process surplus, carries out blank roughing,
Thick open cell type simultaneously；
13) Technology for Heating Processing of high wear-resistant strong exhibition roller, roughing roll protect roll neck above and below roll with ceramic fibre；From
Room temperature is heated to 650 DEG C with≤15 DEG C/h programming rates, after being incubated 3-6 hour sammings, is quickly risen with 30-50 DEG C/h programming rates
Temperature to 950-1000 DEG C of austenitizing, insulation 5-8 hour sammings makes Cr, Mo, V alloy be fully dissolved in formation supersaturation in austenite
After austenite, open heat treatment fire door and be air-cooled to 780-830 DEG C, insulation 5-8 hours make Cr, Mo in supersaturated austenite, V alloy
After element is separated out with secondary alloy carbide form precipitation, quick cooling (quenching) of drying is melted down to 420-480 DEG C and carries out 530-
560 DEG C of tempering, are incubated 15-25 hours, eliminate heat-treated sturcture transformation stress and thermal stress, adjust matrix, realization has
Heat endurance, obdurability and the superfine pearlitic structrure (secondary troostite) of one, heat treatment cycle curve is as shown in Figure 7；
14) roll hardness index and retained austenite index are detected after being cooled to room temperature, controls roll surface hardness range
58-63HSD, retained austenite≤3%, according to testing result, such as hardness >=65HSD or retained austenite >=5%,
Double tempering heat treatment is supplemented, temperature adjusts depending on index situation in 520-550 temperature ranges；
15) roller neck tensile strength >=550Mpa after above-mentioned special thermal treatment PROCESS FOR TREATMENT；
16) skin of the roll after above-mentioned special thermal treatment PROCESS FOR TREATMENT is organized as the superfine pearlite (tempering of stability
Troostite) a large amount of Cr, Mo are inlayed on matrix, V alloy proeutectoid carbide+total amount is the high hard wear-resistant Cr of 20-25%7C3Type
The line and staff control of carbide, metallographic structure are as shown in Figure 4.
Embodiment 3：A kind of high wear-resistant strong exhibition roller manufacture method (three)
17) tissue, hardness, Stress relief are carried out through special thermal treatment, after meeting technic index control requirement, roll is carried out
Finishing step, wherein roll pass curve meet y=a × [sin (x × b-c)+d] sinusoidal curve, and a, b, c, d are constant, x
For pass axial length variable, its x maximum occurrences scope can be adjusted according to specific rolled products width specification between 190-350
It is whole；Y is the just profound function that pass changes with length x.
Exemplified by opening up the wide B=300mm of back plate, roll pass central raised height 14.27mm, x=0-300mm, a=
7.15th, b=0.02, c=45.5, d=1.That is y=7.15 × [sin (x × 0.02-45.5)+1], its sinusoidal curve such as Fig. 2 institutes
Show, the structure of the high wear-resistant strong exhibition roller of gained is as shown in Figure 1.
Embodiment 4：A kind of high wear-resistant just profound roll shape opens up by force roller examination and rolls experiment
18) warp opens up by force roller to being used using a kind of wear-resistant type strip of the present invention, is rolled in the examination of the roller roughing mill 1-3 framves of ribbon steel two,
During the wide 300mm of milled sheet, to the single pass force spreading amount 19-22mm (single pass broadening rate 7-8%) of original blank；
19) examined through rolling dissection to the examination of roughing 1-4 frame plates base, after the compacting of stocking center, the heredity of blank center porosity disappears
Except rate is up to 98.5%, through being rolled in follow-up, the production board flaw detection qualification rate after finish rolling rolling is up to 100%.
20) roller is opened up with strong through a kind of wear-resistant type strip of the examination present invention, rolls continuous line duration by the 6 of traditional NiCrMo rolls
My god, extend to 16 days, be 2.67 times of traditional roll；Roll surface flawless, lose flesh phenomenon, and roll loaded vehicle reparation amount is by tradition
The 8-10mm of NiCrMo rolls, falls below 5-6mm, and the car amount of repairing reduces 40%；Roll to solve traditional high alloy roller and skid through examination and ask
Topic；Occur without peeling, roll breakage accident；More than 3 times of Comprehensive service life position tradition NiCrMo rolls, comprehensive ton steel roll consumption
Cost declines more than 30%.Wear-resistant type strip is as shown in Figure 5 with machine photo under strong exhibition roller.
Although the present invention is disclosed as above with preferred embodiment, it is not limited to the present invention, any to be familiar with this skill
The people of art, without departing from the spirit and scope of the present invention, it can all do various change and modification, therefore the protection model of the present invention
Enclose being defined of being defined by claims.
Claims (10)
1. the strong exhibition roll of a kind of wear-resistant type strip, it is characterised in that cladding material uses high Cr-Mo-V system alloy material, described
High Cr-Mo-V system alloy material contains C2.0-3.0, Si0.4-1.0, Mn0.6-1.0, Cr8-32, Ni0.8- as mass fraction
1.8、Mo0.8-2.0、V0.2-1.2；Its roll shape is sine curve.
A kind of 2. strong exhibition roll of wear-resistant type strip according to claim 1, it is characterised in that sine curve be y=a ×
[sin (x × b-c)+d], a, b, c, d are constant, and x is pass axial length variable, and its x maximum occurrences scope is according to specifically rolling
Product width specification processed adjusts between 190-350mm；Y is the just profound function changed with pass axial length variable x.
3. a kind of prepare method of the wear-resistant type strip of claim 1 or 2 with strong exhibition roll, it is characterised in that including following
Step：
(1) rough-cast：Smelt outer floor height Cr-Mo-V system alloying metal liquid, centrifugal casting outer layer, cast intermediate layer, the cast heart
Portion, obtain roller blank；
(2) it is heat-treated：Roller blank is heat-treated after cooling down roughing, Cr, Mo, V alloy is fully dissolved in austenite
After forming supersaturated austenite, air cooling makes Cr, Mo in supersaturated austenite, V alloy element be taken off with secondary alloy carbide form
After dissolved goes out, tempering, heat-treated sturcture transformation stress and thermal stress are eliminated；It is cooled to after room temperature and detects roll hardness index and residual
Remaining austenite index, control roll surface hardness range 58-63HSD, retained austenite≤3%；
(3) finish.
4. according to the method for claim 3, it is characterised in that the outer floor height Cr-Mo-V system through smelting in the step (1)
The tapping temperature of alloying metal liquid is 1520-1580 DEG C；Metamorphism treatment is carried out during stove：Process of coming out of the stove pours metal with metal stream
The 0.2-0.5% of liquid weight particle diameter 0.3-2mm vanadium alloy alterant particle, is sufficiently stirred.
5. the method according to claim 3 or 4, it is characterised in that floor height Cr-Mo-V system of step (1) China and foreign countries alloy gold
The bag pouring temperature that rises for belonging to liquid is 1400-1450 DEG C.
6. the method according to claim 3 or 5, it is characterised in that outer layer inner surface molten metal temperature in the step (1)
For 1120-1180 DEG C when, pour into a mould intermediate layer；The metallic intermediate layer liquid chemical composition is by mass fraction composition (%)：C0.8-
1.5、Si0.4-0.8、Mn0.4-0.8、P≤0.03、S≤0.02、Cr0-0.2、Ni0.1-0.8、Mo0-0.2；Pour into a mould in intermediate layer
Temperature is 1500-1580 DEG C.
7. the method according to claim 3 or 6, it is characterised in that in the step (1) behind cast intermediate layer, intermediate layer
During T1=1100-1160 DEG C of molten metal internal surface temperature, center portion high-strength alloy spheroidal graphite cast-iron mandrel position molten metal is poured into；It is high
Strength alloys spheroidal graphite cast-iron mandrel position molten metal chemical composition is by mass fraction composition (%)：C2.8-3.5、Si2.4-2.8、
Mn0.4-1.0、P≤0.05、S≤0.02、Cr0-0.2、Ni0.8-1.5、Mo0-0.2；Center portion pouring metal melt temperature is 1380-
1430℃。
8. according to any described method of claim 3~7, it is characterised in that Technology for Heating Processing in the step (2) can be with
It is to be heated to 650 DEG C from room temperature with≤15 DEG C/h programming rates, it is fast with 30-50 DEG C/h programming rates after being incubated 3-6 hour sammings
Speed is warming up to 950-1000 DEG C of austenitizing, and insulation 5-8 hour sammings make Cr, Mo, V alloy be fully dissolved in austenite and be formed
After saturation austenite, open heat treatment fire door and be air-cooled to 780-830 DEG C, insulation 5-8 hours make Cr, Mo, V in supersaturated austenite
After alloying element is separated out with secondary alloy carbide form precipitation, blowing is quickly cooled to 420-480 DEG C, melts down and carries out 530-
560 DEG C of tempering, are incubated 15-25 hours, eliminate heat-treated sturcture transformation stress and thermal stress.
A kind of 9. application of wear-resistant type strip with strong exhibition roll in ribbon steel is prepared described in claim 1 or 2.
10. contain a kind of milling train of strong exhibition roll of wear-resistant type strip described in claim 1 or 2.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868469A (en) * | 2019-03-13 | 2019-06-11 | 沈阳大陆激光工程技术有限公司 | A kind of dusty material and its manufacturing method for laser manufacture mill housing and roll chock composite liner |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02235510A (en) * | 1989-03-09 | 1990-09-18 | Kobe Steel Ltd | Device for correcting shape in multi roll mill |
| JPH02307601A (en) * | 1989-05-24 | 1990-12-20 | Kawasaki Steel Corp | Rolling mill |
| CN1293087A (en) * | 2000-12-08 | 2001-05-02 | 唐山钢铁集团有限责任公司 | Technology for rolling narrow steel band |
| US20080226936A1 (en) * | 2004-09-13 | 2008-09-18 | Hitachi Metals, Ltd. | Centrifugally Cast External Layer for Rolling Roll and Method for Manufacture Thereof |
| CN104308112A (en) * | 2014-09-24 | 2015-01-28 | 江苏共昌轧辊股份有限公司 | Preparation method of reinforced D2 steel centrifugal composite rod wire finishing roll |
| CN204396463U (en) * | 2015-01-15 | 2015-06-17 | 三鑫重工机械有限公司 | Steel rolling forming roll structure |
| CN105312540A (en) * | 2015-11-12 | 2016-02-10 | 丹阳恒庆复合材料科技有限公司 | Technique and device for manufacturing composite roller with recyclable roller core |
| CN106086705A (en) * | 2016-08-17 | 2016-11-09 | 三鑫重工机械有限公司 | A kind of high-speed steel roll of graphitiferous |
| CN106834900A (en) * | 2017-02-23 | 2017-06-13 | 中钢集团邢台机械轧辊有限公司 | A kind of centrifugal compound ferrochrome roll high and its manufacture method |
-
2017
- 2017-08-09 CN CN201710675949.5A patent/CN107511398B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02235510A (en) * | 1989-03-09 | 1990-09-18 | Kobe Steel Ltd | Device for correcting shape in multi roll mill |
| JPH02307601A (en) * | 1989-05-24 | 1990-12-20 | Kawasaki Steel Corp | Rolling mill |
| CN1293087A (en) * | 2000-12-08 | 2001-05-02 | 唐山钢铁集团有限责任公司 | Technology for rolling narrow steel band |
| US20080226936A1 (en) * | 2004-09-13 | 2008-09-18 | Hitachi Metals, Ltd. | Centrifugally Cast External Layer for Rolling Roll and Method for Manufacture Thereof |
| CN104308112A (en) * | 2014-09-24 | 2015-01-28 | 江苏共昌轧辊股份有限公司 | Preparation method of reinforced D2 steel centrifugal composite rod wire finishing roll |
| CN204396463U (en) * | 2015-01-15 | 2015-06-17 | 三鑫重工机械有限公司 | Steel rolling forming roll structure |
| CN105312540A (en) * | 2015-11-12 | 2016-02-10 | 丹阳恒庆复合材料科技有限公司 | Technique and device for manufacturing composite roller with recyclable roller core |
| CN106086705A (en) * | 2016-08-17 | 2016-11-09 | 三鑫重工机械有限公司 | A kind of high-speed steel roll of graphitiferous |
| CN106834900A (en) * | 2017-02-23 | 2017-06-13 | 中钢集团邢台机械轧辊有限公司 | A kind of centrifugal compound ferrochrome roll high and its manufacture method |
Non-Patent Citations (1)
| Title |
|---|
| 李振山 等: "不均匀大宽展轧制技术及应用", 《山西冶金 》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868469A (en) * | 2019-03-13 | 2019-06-11 | 沈阳大陆激光工程技术有限公司 | A kind of dusty material and its manufacturing method for laser manufacture mill housing and roll chock composite liner |
| CN109868469B (en) * | 2019-03-13 | 2020-09-22 | 沈阳大陆激光工程技术有限公司 | Powder material for laser manufacturing mill housing and roller bearing seat composite lining plate and manufacturing method thereof |
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