CN104525889B - A kind of manufacture method of high-speed steel roll - Google Patents
A kind of manufacture method of high-speed steel roll Download PDFInfo
- Publication number
- CN104525889B CN104525889B CN201410853156.4A CN201410853156A CN104525889B CN 104525889 B CN104525889 B CN 104525889B CN 201410853156 A CN201410853156 A CN 201410853156A CN 104525889 B CN104525889 B CN 104525889B
- Authority
- CN
- China
- Prior art keywords
- molten iron
- roll
- speed steel
- transition zone
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The invention discloses the manufacture method of a kind of high-speed steel roll being applicable to light-section mill, wire and bar mill.Described manufacture method includes melting raw material, moulding by casting, machining and three processing steps of heat treatment；On the basis of centrifugal casting high-speed steel molten iron, first it is poured into transition zone molten iron, is realized the displacement completely of transition zone molten iron the most again by cast core molten iron.The present invention significantly improves the bond strength of outer layer high-speed steel and core molten iron, and bond strength was promoted to more than 500Mpa by former about 350Mpa so that high-speed steel roll body of roll binder course resistance to flaking is greatly improved；Can effectively remove the carbide former amount of core molten iron corrosion outer layer simultaneously, thus improve roll neck tissue, improve the tensile strength of roll neck, effectively stopped the roll breakage phenomenon in using.
Description
Technical field
The present invention relates to the manufacture method of roll, specifically, be that one is applicable to light-section mill, bar
The manufacture method of the high-speed steel roll of material milling train.
Background technology
Roll is the strength member on steel rolling mill's rolling mill, is to determine that rolling mill efficiency and the important of mill bar quality disappear
Consumption parts.The pressure that roll utilizes a pair or one group of roll produces when rolling, to roll rolloff part, makes rolled piece produce
Being plastically deformed and obtain preferable design shape, therefore, the quality of roll quality is directly connected to rolled products
Surface quality and the production operational availability of rolling mill.It is primarily subjected to Dynamic And Static Loads during rolling, abrasion and temperature
The impact of degree change.
High-speed steel is used for making roll and starts from 20th century the eighties.The application of high-speed steel roll is modern steel rolling
The important component part of production development, be continue in development of iron & steel industry history microalloying, Controlled Rolling And Controlled Cooling it
After another major transformation.High-speed steel roll, is also called high carbon high-speed steel composite roll, the working lining of roll
Material uses high carbon high-speed steel, core material many employings spheroidal graphite cast-iron of roll.Containing big in high-speed steel roll
The alloying elements such as V, W, Cr, Mo, Nb of amount, have higher normal temperature hardness (HS82～90), with
Time have good high temperature red hardness feature, more than 500 DEG C, still ensure that more than HS78, therefore have excellent
High temperature abrasion resistance, be widely used at present in Rolling production.With high-speed steel roll replace ferrosteel roll,
High-chromium iron-cast roller, high-nickel-chromium molybdenum infinitely chilled roll and Needle-like ductile iron roll, for improving rolling
Amount, prolongation roll change cycle have good effect.
Bond quality between outer layer high-speed steel and the core molten iron of high-speed steel roll is huge to the performance impact of roll
Greatly.During composite casting, it is positioned in the high-speed steel working lining of skin of the roll containing carbonizations such as substantial amounts of V, W, Cr
Thing forms element, and core of the roll is spheroidal graphite cast-iron, and the composition of both materials differs greatly, certainly will be at knot
Close layer position and can there is substantial amounts of carbide so that binder course intensity is the lowest, causes roll to hold the most very much
Easily peel off at binder course；On the other hand, due to the corrosion of core molten iron external layer high-speed steel, cause
Substantial amounts of carbide formers enters core of the roll, makes the carbide of core of the roll increase, ultimately results in roll mandrel
Neck intensity reduces, and roll breakage phenomenon easily occurs in using.
Summary of the invention
It is an object of the invention to provide a kind of high-speed steel roll being applicable to light-section mill, wire and bar mill
Manufacture method, is effectively increased binder course intensity and the tensile strength of roll neck of high-speed steel roll, it is possible to prevent
In use there is barrel Spalling and body of roll fracture in roll.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
The manufacture method of a kind of high-speed steel roll, including using casting method for centrifugal casting roll body of roll outer layer
High-speed steel, then employing mould assembling pouring procedure cast core of the roll molten iron, use the cast of mould assembling pouring procedure to roll
It is that the body of roll model having poured into a mould outer layer high-speed steel is carried out mould assembling shape with roll neck model, under casing during roller core portion molten iron
Become mo(u)ld-box, bottom mo(u)ld-box, connect overflow pipe；First poured into a mould in mo(u)ld-box from the top cast gate of mo(u)ld-box
Cross a layer molten iron, until transition zone molten iron fills up mo(u)ld-box, stops cast after overflow pipe flows out；Then from casting
The top cast gate of molding box continues to pour into a mould core molten iron, until core molten iron is by complete for transition zone molten iron in mo(u)ld-box
Portion stops cast after ejecting.
The manufacture method of a kind of high-speed steel roll of the present invention specifically comprises following processing step:
A, melting raw material
Outer layer high-speed steel raw material, transition zone molten iron raw material and core molten iron raw material are carried out melting respectively；
B, moulding by casting
Cast outer layer high speed molten steel, transition zone molten iron and core molten iron successively, casting process is:
(1) use centrifugal casting method, melted outer layer high speed molten steel is injected in the body of roll model rotated；
(2) after high speed molten steel solidification, will pour into a mould at body of roll model and roll neck model, the end of outer layer high-speed steel
Case carries out mould assembling and forms mo(u)ld-box, connects overflow pipe bottom under casing；Then transition is poured into a mould by mo(u)ld-box cast gate
Layer molten iron；Until transition zone molten iron fills up mo(u)ld-box, flows out from overflow pipe；
(3) cast core molten iron is continued by mo(u)ld-box cast gate, along with the injection of core molten iron, in mo(u)ld-box
Original transition zone molten iron gradually flows out from overflow pipe, until transition zone molten iron is all replaced into core molten iron
Rear stopping is poured into a mould, and is subsequently cooled to 200 DEG C～320 DEG C, the demoulding of unpacking, and obtains high-speed steel roller stock；
C, machining and heat treatment
Roller stock is carried out machining, by the working face car of high-speed steel roll to given size；Visit through ultrasonic wave
Triage test qualified after, roller stock is heat-treated, is then cooled to room temperature, obtain high-speed steel roll.
Further improvement is that of the technique scheme of the present invention: the heat treatment detailed process of described step C
For+three tempering of primary quenching: quenching is to be warming up to 1000～1120 DEG C with the programming rate of 20～30 DEG C/h,
Insulation 3～4h, is cooled to 400～450 DEG C with the cooling rate of 130～140 DEG C/h after coming out of the stove；Three tempering
Be for first twice to be warming up to 500～550 DEG C with the programming rate of 20～30 DEG C/h, be incubated 10～32h, come out of the stove
After be cooled to room temperature with the cooling rate of 20～30 DEG C/h；Finally it is warming up to the programming rate of 20～30 DEG C/h
500～550 DEG C, being incubated 10～32h, after coming out of the stove, air cooling is to room temperature.
Further improvement is that of the technique scheme of the present invention: the chemical constituent of described outer layer high-speed steel and
Its weight percentage is: C 1.2%～2.2%, Cr 3.0%～4.5%, Ni 0.2%～1.2%, Mo 3.5%～
5.0%, V 2.0%～3.5%, W 1.0%～2.5%, Nb 1.0%～3.0%, Re 0.05%～0.1%,
P≤0.04%, S≤0.04%, Mn≤0.5%, Si 1.3%～2.0%, remaining is Fe；Melting of outer layer high speed molten steel
Refining temperature is 1500 DEG C～1650 DEG C；After melting, external floor height speed molten steel carries out Metamorphism treatment；Pouring temperature
1420～1480 DEG C, when body of roll model cavity temperature is down to 1220～1280 DEG C, stop centrifugal rotation；
Chemical constituent and the weight percentage thereof of described transition zone molten iron be: C 2.0%～2.9%, Cr 0.1%～
0.5%, Ni 0.2%～0.8%, P≤0.01%, S≤0.04%, Mn 0.3～0.8%, Si 1.3%～2.0%, its
Remaining is Fe；The smelting temperature of transition zone molten iron is 1500 DEG C～1650 DEG C；To transition zone molten iron after melting
Carry out spheroidization and inoculation process；Pouring temperature 1400～1550 DEG C；
Chemical constituent and the weight percentage thereof of described core molten iron be: C 2.9%～3.6%, Cr 0.1%～
0.5%, Ni 0.2%～0.8%, P≤0.1%, S≤0.04%, Mn 0.3～0.8%, Si 1.3%～2.0%, its
Remaining is Fe；The smelting temperature of core molten iron is 1500 DEG C～1650 DEG C；After melting, core molten iron is carried out
Spheroidization and inoculation processes；Pouring temperature 1280～1400 DEG C.
Optimizing further of the technique scheme of the present invention is: the smelting temperature of outer layer high speed molten steel is
1600 DEG C～1650 DEG C；The smelting temperature of transition zone molten iron and core molten iron is 1500 DEG C～1550 DEG C.
Further improvement is that of the technique scheme of the present invention: described external floor height speed molten steel goes bad
Process is to carry out Metamorphism treatment by interpolation rare earth external floor height speed molten steel, and rare earth addition is
0.2wt%～6wt%, Metamorphism treatment temperature is 1550～1650 DEG C；It is by adding ball that described spheroidization and inoculation processes
Agent and inovulant carry out spheroidization and inoculation process, spheroidization and inoculation treatment temperature to transition zone molten iron and core molten iron
It it is 1500～1600 DEG C；Described nodulizer is rare earth magnesium ferrosilicon alloy, and addition is 1.0wt%～1.6wt%, institute
State inovulant be silicone content be the Antaciron of 75%, addition is 0.4wt%～1.0wt%.
Further improvement is that of the technique scheme of the present invention: in described step B, centrifugal casting from
Heart gravitation multiple is 60～100G.
Further improvement is that of the technique scheme of the present invention: the fluence of watering of core molten iron is transition zone iron
Water waters three times of fluence.
Owing to have employed technique scheme, the technological progress acquired by the present invention is:
The invention provides the manufacture method of a kind of high-speed steel roll, hence it is evident that improve outer layer high-speed steel and core
The bond strength of molten iron, bond strength was promoted to more than 500Mpa by former about 350Mpa so that high
Speed steel roll body of roll binder course resistance to flaking is greatly improved；Meanwhile, the inventive method can effectively remove core
The carbide former amount of molten iron corrosion outer layer, thus improve roll neck tissue, improve the tension of roll neck
Intensity, roll neck tensile strength is actually detected at more than 550Mpa, three layers of more traditional composite roll 350Mpa
It is significantly increased, has effectively stopped the roll breakage phenomenon in using.
The present invention, on the basis of centrifugal casting high speed molten steel, is first poured into transition zone molten iron, transition zone iron
Water-soluble erosion portion outer layer high-speed steel, the most substantial amounts of carbide former enters into transition zone molten iron
In；Realized the displacement completely of transition zone molten iron the most again by cast core molten iron, thus taken away and can drop
Low roll pins having intensity and the carbide former of combination of inner and outside layer intensity so that the final high-speed steel prepared
In roll, its binder course and core molten iron, carbide former greatly reduces so that roll binder course and core
Portion's tissue only exists the carbide less than 3% amount；Matrix is based on ferritic structure simultaneously, roll binder course
The tensile strength of intensity and roll neck is all greatly improved.And outer layer high-speed steel, centre are poured into a mould in existing employing successively
The high-speed steel roll that layer spheroidal graphite cast-iron, the method for three layers of core spheroidal graphite cast-iron produce, its binder course and core
The content of middle carbide is to only exist a small amount of ferritic structure in about 7%, and matrix, and intensity is the most relatively
Low.
The present invention carries out Metamorphism treatment to melted outer layer high speed molten steel, can be effectively improved steel quality,
Refinement matrix and carbide, improve the anti-wear performance on high-speed steel roll surface；To melted transition zone molten iron
Carry out spheroidization and inoculation process with core molten iron, roll strength can be improved, make roll neck obtain good mechanics
Performance, thus avoid roll breakage.
The present invention carries out the heat treatment mode of+three tempering of primary quenching, high-speed steel as cast condition group to high-speed steel roller stock
There are substantial amounts of unstable phase martensite in knitting paralympic, be obtained in that stable matrix by above-mentioned heat treatment
Tissue, and three temper enable to retained austenite and can fully be changed；By being heat-treated,
The generation probability of roll fire check can be greatly reduced, be obviously improved anti-accident ability, extend high-speed steel roll
The use cycle.
Accompanying drawing explanation
Fig. 1 is high-speed steel roll manufacture method of the present invention and the schematic diagram of mo(u)ld-box used；
Wherein, 1, rising head case, 2, emit eck mould type, 3, outer layer high-speed steel, 4, body of roll model, 5, end neck
Model, 6, under casing model, 7, overflow pipe, 8, overflow pipe sand mold, 9, fill the molten iron of transition zone molten iron
Bag, 10, fill the ladle of core molten iron.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further details:
The reaction unit of the present invention, as it is shown in figure 1, rising head case 1 is upright placement, is provided with in rising head case 1
Emit eck mould type 2；Rising head case 1 bottom is body of roll model 4, and body of roll model 4 is metal mold model, and its surface is sprayed
Scribble release coating.Body of roll model 4 bottom is end eck mould type 5, end eck mould type 5 and the under casing resting on the ground
Model 6 is connected.Offering passage under casing model 6 and connect overflow pipe 7, in cast, the molten iron of excess can be through
Overflow pipe 7 is discharged.Overflow pipe 7 is upright placement, and it is internally provided with overflow pipe sand mold 8.Described emit eck mould
Type 2, end eck mould type 5, under casing model 6 and overflow pipe sand mold 8 all use quartz sand loam moulding.
The manufacture method of a kind of high-speed steel roll of the present invention, is to include using casting method for centrifugal casting roll
Body of roll outer layer high-speed steel, then employing mould assembling pouring procedure cast core of the roll molten iron, use mould assembling cast side
It is that the body of roll model having poured into a mould outer layer high-speed steel is entered with roll neck model, under casing during method cast core of the roll molten iron
Row mould assembling forms mo(u)ld-box, connects overflow pipe bottom mo(u)ld-box；First from the top cast gate of mo(u)ld-box to mo(u)ld-box
Interior cast transition zone molten iron, until transition zone molten iron fills up mo(u)ld-box, stops cast after overflow pipe flows out；
Then in mo(u)ld-box, cast core molten iron is continued, until core molten iron is by transition from the top cast gate of mo(u)ld-box
Layer molten iron stops cast after all ejecting.Specifically comprise following processing step:
A, melting raw material
Outer layer high-speed steel raw material, transition zone molten iron raw material and core molten iron raw material are entered respectively in middle main frequency furnace
Row melting；Transition zone molten iron and core molten iron are the spheroidal graphite cast-iron of heterogeneity；
(1) chemical constituent and the weight percentage thereof of described outer layer high-speed steel is: C 1.2%～2.2%, Cr
3.0%～4.5%, Ni 0.2%～1.2%, Mo 3.5%～5.0%, V 2.0%～3.5%, W 1.0%～2.5%,
Nb 1.0%～3.0%, Re 0.05%～0.1%, P≤0.04%, S≤0.04%, Mn≤0.5%, Si 1.3%～
2.0%, remaining is Fe；The smelting temperature of outer layer high speed molten steel is 1500 DEG C～1650, preferably 1600～1650 DEG C；
Carrying out Metamorphism treatment by interpolation rare earth external floor height speed molten steel after melting, rare earth addition is
0.2wt%～6wt%, Metamorphism treatment temperature is 1550～1650 DEG C.
(2) chemical constituent and the weight percentage thereof of described transition zone molten iron is: C 2.0%～2.9%, Cr
0.1%～0.5%, Ni 0.2%～0.8%, P≤0.01%, S≤0.04%, Mn 0.3～0.8%, Si 1.3%～2.0%,
Remaining is Fe；The smelting temperature of transition zone molten iron is 1500 DEG C～1650 DEG C, preferably 1500～1550 DEG C；
By interpolation nodulizer and inovulant, transition zone molten iron is carried out spheroidization and inoculation process, ball after melting
Changing inoculation temperature is 1500～1600 DEG C；Described nodulizer is rare earth magnesium ferrosilicon alloy, and addition is
1.0wt%～1.6wt%, described inovulant be silicone content be the Antaciron (being called for short 75% ferrosilicon) of 75%, add
Dosage is 0.4wt%～1.0wt%.
(3) chemical constituent and the weight percentage thereof of described core molten iron is: C 2.9%～3.6%, Cr
0.1%～0.5%, Ni 0.2%～0.8%, P≤0.1%, S≤0.04%, Mn 0.3～0.8%, Si 1.3%～2.0%,
Remaining is Fe；The smelting temperature of core molten iron is 1500 DEG C～1650 DEG C, preferably 1500～1550 DEG C；
By interpolation nodulizer and inovulant, core molten iron is carried out spheroidization and inoculation process, nodularization after melting
Inoculation temperature is 1500～1600 DEG C；Described nodulizer is rare earth magnesium ferrosilicon alloy, and addition is
1.0wt%～1.6wt%, described inovulant is 75% ferrosilicon, and addition is 0.4wt%～1.0wt%.
B, moulding by casting
Cast outer layer high speed molten steel, transition zone molten iron and core molten iron successively, casting process is:
(1) use centrifugal casting method, melted outer layer high speed molten steel injected in the body of roll model rotated,
Pouring temperature 1420～1480 DEG C, the centrifugal gravity multiple of centrifugal casting is 60～100G；When body of roll model cavity temperature
When degree is down to 1220～1280 DEG C, stop centrifugal rotation；
(2) after high speed molten steel solidification, will pour into a mould at body of roll model and roll neck model, the end of outer layer high-speed steel
Case carries out mould assembling and forms mo(u)ld-box, connects overflow pipe bottom under casing；Then by the cast gate of mo(u)ld-box to casting mold
Cast transition zone molten iron, pouring temperature 1400～1550 DEG C in case；Until molten iron fills up mo(u)ld-box, from overflow pipe
Cast is stopped after outflow；
(3) continue to pour into a mould core molten iron, pouring temperature in mo(u)ld-box by the cast gate of cast transition zone molten iron
1280～1400 DEG C；Along with the injection of core molten iron, in mo(u)ld-box, original transition zone molten iron is from overflow pipe gradually
Flow out, until transition zone molten iron stops cast after being all replaced into core molten iron；Described core molten iron is
Excellent water that fluence is transition zone molten iron casting amount three times.Cast is cooled to 200 DEG C～320 DEG C after terminating, and unpacks de-
Mould, obtains high-speed steel roller stock；
C, machining and heat treatment
Roller stock is carried out machining, by the working face car of high-speed steel roll to given size；Visit through ultrasonic wave
Triage test qualified after, roller stock is heat-treated, being heat-treated detailed process is primary quenching+three times tempering:
Quenching is to be warming up to 1000～1120 DEG C with the programming rate of 20～30 DEG C/h, be incubated 3～4h, after coming out of the stove with
The cooling rate of 130～140 DEG C/h is cooled to 400～450 DEG C.Three tempering are for first twice with 20～30 DEG C
The programming rate of/h is warming up to 500～550 DEG C, is incubated 10～32h, with the cooling of 20～30 DEG C/h after coming out of the stove
Speed is cooled to room temperature；Finally be warming up to 500～550 DEG C with the programming rate of 20～30 DEG C/h, insulation 10～
32h, after coming out of the stove, air cooling is to room temperature, obtains high-speed steel roll.
Embodiment 1
The manufacture method of a kind of high-speed steel roll, comprises following processing step:
A, melting raw material
By outer layer high-speed steel raw material, transition zone spheroidal graphite cast-iron raw material and core spheroidal graphite cast-iron raw material respectively in middle work
Stove carries out melting frequently；
(1) chemical constituent and the weight percentage thereof of described outer layer high-speed steel is: C2.0%, Cr4.0%,
Ni0.8%, Mo4.2%, V3.0%, W1.9%, Nb2.0%, Re0.08%, P≤0.04%, S≤0.04%,
Mn≤0.5%, Si1.5%, remaining is Fe；The smelting temperature of outer layer high speed molten steel is 1600 DEG C～1650 DEG C；
After melting, carrying out Metamorphism treatment by adding rare earth external floor height speed molten steel, rare earth addition is
3wt%, Metamorphism treatment temperature is 1600～1650 DEG C.
(2) chemical constituent and the weight percentage thereof of described transition zone spheroidal graphite cast-iron is: C 2.5%, Cr
0.3%, Ni 0.5%, P≤0.01%, S≤0.04%, Mn 0.5%, Si 1.8%, remaining is Fe；Transition zone
The smelting temperature of spheroidal graphite cast-iron is 1500 DEG C～1550 DEG C；
After melting, by adding rare earth magnesium ferrosilicon alloy and 75% ferrosilicon, transition zone molten iron is carried out nodularization
Inoculation, spheroidization and inoculation treatment temperature is 1500～1550 DEG C；The addition of nodulizer rare earth magnesium ferrosilicon alloy
For 1.4wt%, the addition of described 75% ferrosilicon is 0.6wt%.
(3) chemical constituent and the weight percentage thereof of described core spheroidal graphite cast-iron is: C 3.2%, Cr 0.3%,
Ni 0.4%, P≤0.1%, S≤0.04%, Mn 0.5%, Si 1.5%, remaining is Fe；Core spheroidal graphite cast-iron
Smelting temperature is 1500 DEG C～1650 DEG C；
After melting, by interpolation rare earth magnesium ferrosilicon alloy and 75% ferrosilicon, core molten iron is carried out nodularization pregnant
Educating process, spheroidization and inoculation treatment temperature is 1500～1550 DEG C；The interpolation of described nodulizer rare earth magnesium ferrosilicon alloy
Amount is 1.2wt%, and the addition of described 75% ferrosilicon is 0.5wt%.
B, moulding by casting
Cast outer layer high speed molten steel, transition zone molten iron and core molten iron successively, cast detailed process is:
(1) water fluence according to the working lining THICKNESS CALCULATION out layer high-speed steel of user's work roll cooling, use centrifugal
Casting, is poured into melted outer layer high speed molten steel in the body of roll model of rotation, pouring temperature
1420～1480 DEG C, the centrifugal gravity multiple of centrifugal casting is 80G；When body of roll model cavity temperature is down to 1250 DEG C
Time, stop centrifugal casting；
(2) after high speed molten steel solidification, will pour into a mould at body of roll model and roll neck model, the end of outer layer high-speed steel
Box model carries out mould assembling, and under casing model bottom connects overflow pipe；Then by the cast gate cast transition of mo(u)ld-box
Layer molten iron, pouring temperature 1450～1520 DEG C；Until molten iron fills up mo(u)ld-box, stops watering after overflow pipe flows out
Note；
(3) cast gate to cast transition zone molten iron continues cast core molten iron, and the fluence of watering of core molten iron was
Cross layer molten iron casting amount three times, pouring temperature 1350～1400 DEG C；Along with the injection of core molten iron, mo(u)ld-box
The transition zone molten iron that interior script fills gradually flows out from overflow pipe, until transition zone molten iron is all replaced into core
Portion's molten iron；Mo(u)ld-box normal temperature is cooled to 200 DEG C～320 DEG C after terminating by cast, the demoulding of unpacking, and obtains high-speed steel
Roller stock.
C, machining and heat treatment
By machining by the working face car of high-speed steel roller stock to given size；Close through ultrasonic examination inspection
After lattice, being heat-treated roller stock, being heat-treated detailed process is primary quenching+three times tempering: quenching be with
The programming rate of 25 DEG C/h is warming up to 1100 DEG C, is incubated 4h, and after coming out of the stove, the cooling rate with 130 DEG C/h cools down
To 450 DEG C；
Three tempering are for first twice to be warming up to 520 DEG C with the programming rate of 25 DEG C/h, are incubated 20h, after coming out of the stove
It is cooled to room temperature with the cooling rate of 25 DEG C/h；Finally it is warming up to 550 DEG C with the programming rate of 25 DEG C/h, protects
Temperature 15h, after coming out of the stove, air cooling is to room temperature, obtains high-speed steel roll.
Embodiment 2
Preparation process is substantially the same manner as Example 1, and its difference is: in described step B, transition zone molten iron
Pouring temperature be 1480～1500 DEG C.
Embodiment 3
Preparation process is substantially the same manner as Example 1, and its difference is: in the heat treatment step of described step C,
Quenching is to be warming up to 1050 DEG C with the programming rate of 30 DEG C/h, is incubated 3.5h, with the fall of 140 DEG C/h after coming out of the stove
Temperature speed is cooled to 420 DEG C；Then double tempering is to be warming up to 550 DEG C with the programming rate of 30 DEG C/h, insulation
30h, is cooled to room temperature with the cooling rate of 20 DEG C/h after coming out of the stove；Last once tempering is with 30 DEG C/h
Programming rate is warming up to 520 DEG C, is incubated 12h, and after coming out of the stove, air cooling is to room temperature, obtains high-speed steel roll.
Embodiment 4
Preparation process is substantially the same manner as Example 1, and its difference is: the outer floor height of described step B centrifugal casting
During speed steel, when body of roll model cavity temperature is down to 1230 DEG C, stop centrifugal casting.
Embodiment 5
Preparation process is substantially the same manner as Example 1, and its difference is: in described step B, core molten iron
Pouring temperature is 1330～1380 DEG C.
Embodiment 6
The present embodiment is comparative example, uses three layers of composite casting method to prepare high-speed steel roll.
Raw materials used outer layer high-speed steel, transition zone spheroidal graphite cast-iron, the chemistry of core spheroidal graphite cast-iron in the present embodiment
Constituent content and method of smelting are all with embodiment 1.During cast, first centrifugal casting outer layer high speed molten steel, cast
After when die cavity temperature reaches 1350 DEG C, centrifuge is inserted in die cavity transition zone molten iron, centrifugal
It is poured rear slow cooling, the centrifuge stall when die cavity temperature reaches 1040 DEG C.Then by body of roll model
Mould assembling is carried out with under casing model, rising head case etc., the cast gate cast core molten iron from rising head box top, cast temperature
Degree is 1420 DEG C；Cast is stopped after core molten iron fills up mo(u)ld-box.Mo(u)ld-box normal temperature is cooled to 200 DEG C
～320 DEG C, the demoulding of unpacking, obtain high-speed steel roller stock.Then according to the method for embodiment 1 is to high-speed steel roller stock
Carry out machining and heat treatment, obtain high-speed steel roll.
Example 1～embodiment 6 product carry out sample tensile mechanical properties detection, and performance detection performs country
Standard GB/T1503-2008.Testing result is shown in Table 1.
Table 1 embodiment product tensile mechanical properties testing result
By data in table 1 it can be seen that use high-speed steel roll prepared by the inventive method, its binder course is axial
Tensile strength, binder course radially tensile strength and roll neck tensile strength are all remarkably higher than three layers of embodiment 6 again
Closing high-speed steel roll, the resistance to flaking of high-speed steel roll body of roll binder course is greatly improved, and can effectively stop
The roll breakage phenomenon that roll in use occurs, the life-span of roll is greatly prolonged.
Claims (6)
1. a manufacture method for high-speed steel roll, including using casting method for centrifugal casting roll body of roll outer layer
High-speed steel, then employing mould assembling pouring procedure cast core of the roll molten iron, it is characterised in that: use mould assembling to water
It is to have poured into a mould at body of roll model and roll neck model, the end of outer layer high-speed steel during injecting method cast core of the roll molten iron
Case carries out mould assembling and forms mo(u)ld-box, connects overflow pipe bottom mo(u)ld-box；First from the top cast gate of mo(u)ld-box to casting
Cast transition zone molten iron in molding box, until transition zone molten iron fills up mo(u)ld-box, stops watering after overflow pipe flows out
Note；Then in mo(u)ld-box, cast core molten iron is continued from the top cast gate of mo(u)ld-box, until core molten iron will
Transition zone molten iron stops cast after all ejecting；
Specifically comprise following processing step:
A, melting raw material
Outer layer high-speed steel raw material, transition zone molten iron raw material and core molten iron raw material are carried out melting respectively；
B, moulding by casting
Cast outer layer high speed molten steel, transition zone molten iron and core molten iron successively, casting process is:
(1) use centrifugal casting method, melted outer layer high speed molten steel is injected in the body of roll model rotated；
(2) after high speed molten steel solidification, will pour into a mould at body of roll model and roll neck model, the end of outer layer high-speed steel
Case carries out mould assembling and forms mo(u)ld-box, connects overflow pipe bottom under casing；Then transition is poured into a mould by mo(u)ld-box cast gate
Layer molten iron；Until transition zone molten iron fills up mo(u)ld-box, flows out from overflow pipe；
(3) cast core molten iron is continued by mo(u)ld-box cast gate, along with the injection of core molten iron, in mo(u)ld-box
Original transition zone molten iron gradually flows out from overflow pipe, until transition zone molten iron is all replaced into core molten iron
Rear stopping is poured into a mould, and is subsequently cooled to 200 DEG C～320 DEG C, the demoulding of unpacking, and obtains high-speed steel roller stock；
C, machining and heat treatment
Roller stock is carried out machining, by the working face car of high-speed steel roll to given size；Visit through ultrasonic wave
Triage test qualified after, roller stock is heat-treated, is then cooled to room temperature, obtain high-speed steel roll；
The heat treatment detailed process of described step C is+three tempering of primary quenching: quenching is with 20～30 DEG C/h
Programming rate be warming up to 1000～1120 DEG C, be incubated 3～4h, with the cooling of 130～140 DEG C/h after coming out of the stove
Speed is cooled to 400～450 DEG C；
Three tempering are for first twice to be warming up to 500～550 DEG C with the programming rate of 20～30 DEG C/h, insulation
10～32h, it is cooled to room temperature with the cooling rate of 20～30 DEG C/h after coming out of the stove；Last with 20～30 DEG C/h's
Programming rate is warming up to 500～550 DEG C, is incubated 10～32h, and after coming out of the stove, air cooling is to room temperature.
The manufacture method of a kind of high-speed steel roll the most according to claim 1, it is characterised in that: described
The chemical constituent of outer layer high-speed steel and weight percentage thereof be: C 1.2%～2.2%, Cr 3.0%～4.5%,
Ni 0.2%～1.2%, Mo 3.5%～5.0%, V 2.0%～3.5%, W 1.0%～2.5%, Nb 1.0%～
3.0%, Re 0.05%～0.1%, P≤0.04%, S≤0.04%, Mn≤0.5%, Si 1.3%～2.0%, remaining
For Fe；The smelting temperature of outer layer high speed molten steel is 1500 DEG C～1650 DEG C；External layer high-speed steel after melting
Water carries out Metamorphism treatment；Pouring temperature 1420～1480 DEG C, when body of roll model cavity temperature is down to 1220～1280 DEG C
Time, stop centrifugal rotation；
Chemical constituent and the weight percentage thereof of described transition zone molten iron be: C 2.0%～2.9%, Cr 0.1%～
0.5%, Ni 0.2%～0.8%, P≤0.01%, S≤0.04%, Mn 0.3～0.8%, Si 1.3%～2.0%, its
Remaining is Fe；The smelting temperature of transition zone molten iron is 1500 DEG C～1650 DEG C；To transition zone molten iron after melting
Carry out spheroidization and inoculation process；Pouring temperature 1400～1550 DEG C；
Chemical constituent and the weight percentage thereof of described core molten iron be: C 2.9%～3.6%, Cr 0.1%～
0.5%, Ni 0.2%～0.8%, P≤0.1%, S≤0.04%, Mn 0.3～0.8%, Si 1.3%～2.0%, its
Remaining is Fe；The smelting temperature of core molten iron is 1500 DEG C～1650 DEG C；After melting, core molten iron is carried out
Spheroidization and inoculation processes；Pouring temperature 1280～1400 DEG C.
The manufacture method of a kind of high-speed steel roll the most according to claim 2, it is characterised in that: outer layer
The smelting temperature of high speed molten steel is 1600 DEG C～1650 DEG C；The smelting temperature of transition zone molten iron and core molten iron is
1500 DEG C～1550 DEG C.
The manufacture method of a kind of high-speed steel roll the most according to claim 2, it is characterised in that: described
Externally floor height speed molten steel carries out Metamorphism treatment is to carry out Metamorphism treatment by interpolation rare earth external floor height speed molten steel,
Rare earth addition is 0.2wt%～6wt%, and Metamorphism treatment temperature is 1550～1650 DEG C；At described spheroidization and inoculation
Reason is, by interpolation nodulizer and inovulant, transition zone molten iron and core molten iron are carried out spheroidization and inoculation process, ball
Changing inoculation temperature is 1500～1600 DEG C；Described nodulizer is rare earth magnesium ferrosilicon alloy, and addition is
1.0wt%～1.6wt%, described inovulant be silicone content be the Antaciron of 75%, addition is
0.4wt%～1.0wt%.
The manufacture method of a kind of high-speed steel roll the most according to claim 1, it is characterised in that: institute
Stating in step B, the centrifugal gravity multiple of centrifugal casting is 60～100G.
The manufacture method of a kind of high-speed steel roll the most according to claim 1, it is characterised in that: core
Three times that water that fluence is transition zone molten iron casting amount of molten iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410853156.4A CN104525889B (en) | 2014-12-31 | 2014-12-31 | A kind of manufacture method of high-speed steel roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410853156.4A CN104525889B (en) | 2014-12-31 | 2014-12-31 | A kind of manufacture method of high-speed steel roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104525889A CN104525889A (en) | 2015-04-22 |
| CN104525889B true CN104525889B (en) | 2016-09-07 |
Family
ID=52841620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410853156.4A Active CN104525889B (en) | 2014-12-31 | 2014-12-31 | A kind of manufacture method of high-speed steel roll |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104525889B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033227A (en) * | 2015-07-22 | 2015-11-11 | 中钢集团邢台机械轧辊有限公司 | Manufacturing method for high-vanadium high-speed steel composite roll |
| CN105522118B (en) * | 2016-01-27 | 2019-02-22 | 中钢集团邢台机械轧辊有限公司 | A kind of production method of the cold mould for producing cast steel roll and cast steel roll |
| CN106282821B (en) * | 2016-08-17 | 2017-10-31 | 三鑫重工机械有限公司 | A kind of high-speed steel centrifugal compound steel core roll manufacture method of graphitiferous |
| CN106282820B (en) * | 2016-08-17 | 2017-11-17 | 三鑫重工机械有限公司 | A kind of high-speed steel roll manufacture method of graphitiferous |
| CN106216405B (en) * | 2016-08-26 | 2018-08-10 | 中钢集团邢台机械轧辊有限公司 | Nitridation high speed steel rider and its manufacturing method suitable for bar cutting rack |
| CN106884126B (en) * | 2016-12-30 | 2019-09-24 | 中钢集团邢台机械轧辊有限公司 | A kind of high chromium steel roller and its manufacturing method |
| CN106676409B (en) * | 2017-01-20 | 2019-09-24 | 中钢集团邢台机械轧辊有限公司 | High chrome anticentripetal roll collar and its manufacturing method |
| CN107243618B (en) * | 2017-05-15 | 2019-10-01 | 唐山亿联盛轧辊有限公司 | A kind of production method of compound high speed steel roll |
| CN108315632A (en) * | 2018-01-04 | 2018-07-24 | 湖州中杭轧辊有限公司 | One kind containing niobium, the special chilled cast iron roll of vanadium cutting rack and production technology |
| CN108165872A (en) * | 2018-01-04 | 2018-06-15 | 湖州中杭轧辊有限公司 | A kind of chilled cast iron roll and its production technology for being exclusively used in wire and rod finishing stand |
| CN109652626A (en) * | 2019-01-16 | 2019-04-19 | 常州凯达重工科技有限公司 | High-speed steel roll afterheat in casting heat treatment method |
| CN112139471B (en) * | 2020-09-24 | 2022-04-08 | 邢台鸿科高速钢轧辊有限公司 | Casting box of roller for bar wire and medium-width strip steel rolling mill and using method |
| CN112008056B (en) * | 2020-10-28 | 2021-03-23 | 常州凯达重工科技有限公司 | High-speed steel roll and casting method thereof |
| CN113547099A (en) * | 2021-06-11 | 2021-10-26 | 中钢集团邢台机械轧辊有限公司 | Preparation method of rough-rolled high-speed steel working roll for full-endless rolling of sheet billet |
| CN114574779A (en) * | 2022-03-14 | 2022-06-03 | 河北津西钢铁集团重工科技有限公司 | High-alloy slitting roller and preparation method thereof |
| CN114918372A (en) * | 2022-06-14 | 2022-08-19 | 成都三强轧辊股份有限公司 | Large-sized roller upper neck casting process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078090A (en) * | 2007-06-26 | 2007-11-28 | 郑州航空工业管理学院 | Low-alloy high speed steel roll material and preparation method thereof |
| CN101733389A (en) * | 2010-01-29 | 2010-06-16 | 北京工业大学 | Method for producing wear-resistant composite roller |
| CN103302457A (en) * | 2013-06-19 | 2013-09-18 | 秦英方 | Rod and wire and manufacturing technology of working roll used for hot strip mill |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920415B2 (en) * | 1979-09-11 | 1984-05-12 | 株式会社クボタ | Manufacturing method of high chromium roll with strong core material |
| JPS5699065A (en) * | 1980-01-11 | 1981-08-10 | Kawasaki Steel Corp | Manufacture of composite roll |
| JPS57202954A (en) * | 1981-06-08 | 1982-12-13 | Kubota Ltd | Cylindrical composite casting having caliber and its production |
-
2014
- 2014-12-31 CN CN201410853156.4A patent/CN104525889B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078090A (en) * | 2007-06-26 | 2007-11-28 | 郑州航空工业管理学院 | Low-alloy high speed steel roll material and preparation method thereof |
| CN101733389A (en) * | 2010-01-29 | 2010-06-16 | 北京工业大学 | Method for producing wear-resistant composite roller |
| CN103302457A (en) * | 2013-06-19 | 2013-09-18 | 秦英方 | Rod and wire and manufacturing technology of working roll used for hot strip mill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104525889A (en) | 2015-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104525889B (en) | A kind of manufacture method of high-speed steel roll | |
| CN104388812B (en) | High-speed steel composite roller for rods/wires and preparation method of high-speed steel composite roller | |
| CN100369681C (en) | Compound high speed steel roll and its making process | |
| CN103526126B (en) | A kind of tool steel roll for rolling plate of moderate thickness and manufacture method thereof | |
| WO2017201729A1 (en) | Profiled composite-casted roll and preparation method therefor | |
| CN104384193B (en) | The manufacture method of the high-speed steel planishing roll of wire and bar mill | |
| CN102766824B (en) | Abrasion-resistant high-speed-steel roller ring and preparation method thereof | |
| CN105088091B (en) | The high-carbon graphite steel rider ring and its manufacture method of shaped steel universal mill | |
| CN105033227A (en) | Manufacturing method for high-vanadium high-speed steel composite roll | |
| CN106216405B (en) | Nitridation high speed steel rider and its manufacturing method suitable for bar cutting rack | |
| CN104480382B (en) | Method for preparing centrifugal nodular cast iron pipe | |
| CN104894483B (en) | Powder metallurgy wear resistant tools steel | |
| CN107119222B (en) | Centrifugal composite casting Cr8 alloy cast steels backing roll and manufacturing process | |
| CN106367671A (en) | Nodular cast iron edging roll suitable for universal rolling mill and manufacturing method thereof | |
| CN108018482A (en) | A kind of high ferrochrome roll | |
| CN103993220A (en) | Hypoeutectic high-chromium white cast iron roller and preparation method thereof | |
| CN105624571B (en) | A kind of super-thick steel plate and its production technology | |
| CN101773935B (en) | High speed steel compound roll and manufacture method thereof | |
| CN102864383B (en) | Low alloy steel | |
| CN103305772B (en) | A kind of high rigidity slag stock pump pump housing and preparation method thereof | |
| CN107574362B (en) | A kind of antifriction alloy composite ring and its manufacturing method, manufacturing device | |
| CN102764852B (en) | A kind of method of use V methods Foundry Production ultra-high manganese steel jaw | |
| CN104874802B (en) | Powder metallurgy is wear-resistant corrosion resisting alloy bar | |
| CN112501382B (en) | Preparation method of carbon tool steel for obtaining low-net-shaped carbide | |
| CN103233187B (en) | Steel for cold working die and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230703 Address after: No. 1, Xinxing West Street, Xindu District, Xingtai City, Hebei Province 054000 Patentee after: Xingtai roll wire rod roll Co.,Ltd. Address before: 054025 No. 1 Xinxing West Street, Qiaoxi District, Xingtai City, Hebei Province Patentee before: SINOSTEEL XINGTAI MACHINERY & MILL ROLL Co.,Ltd. |
|
| TR01 | Transfer of patent right |