CN108486448A - A kind of preparation method of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars - Google Patents
A kind of preparation method of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
- B22F5/106—Tube or ring forms
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
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Abstract
A kind of preparation method of multiphase titanium diboride/titanium carbonitride stainless steel metal ceramics hot-rolling mill collars, according to weight percent, by TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder be uniformly mixed, then wet-milling under protection of argon gas is dry, and sieving obtains powder；Powder is fitted into compression molding in metal die, collars shape is made；The green body of collars shape is first put into solid-phase sintering, hot rolling collars precast body is made；Hot rolling collars precast body is machined, the collars size needed；Hot rolling collars precast body after mechanical processing is subjected to high temperature sintering, obtains titanium diboride/titanium carbonitride stainless steel metal ceramics hot-rolling mill collars.Process of the present invention technique is easy to operate, and the cermet composition of preparation is simple, is free of W, Co strategy scarce resource, few using Ni contents, of low cost, has good wearability, and service life is long, light-weight, is suitble to commercial introduction.
Description
Technical field
The invention belongs to hot-rolling mill ceramic metal roll-rings, and in particular to a kind of multiphase titanium diboride/titanium carbonitride-stainless steel
The preparation method of cermet hot-rolling mill collars.
Background technology
Cermet is due to big in the wear-resisting field of industry with high rigidity, high temperature resistant, good wear-resistant, corrosion resistance
Amount uses.With Ti (C, N) and TiB2Ceramics are that the usual crystal grain of composite ganoine phase cermet of hard phase is tiny, mechanical property is excellent
It is good, there is good wearability, high temperature oxidation resistance, be the new material for preparing high speed hot roll.
Carbide roll ring used in hot-rolling mill is made of two kinds of group lease making hot pressed sinterings of WC and Co at present, this collars
The disadvantage is that largely using the rare element of the strategy such as W, Co, expensive and supply is unstable, leads to common hard alloy roll
Price is high, increases enterprise's production cost；WC and Co starts to aoxidize under higher than 500 DEG C environment, and hard alloy hot roll is resistance to
High-temperature behavior is poor；And Co is soluble in acid, corrodible in the presence of cooling water, therefore reduces hard alloy hot-rolling ring and use the longevity
Life and processing quality.Therefore, under the conditions of ensureing excellent mechanical property, ceramic metal roll-ring cost is reduced, is improved anti-oxidant, resistance to
Acid corrosion performance has great importance.
Publication number CN 1174764A, the Chinese patent of entitled " ceramic metal roll-ring " disclose one kind with WC, Al2O3、
ZrO2, Co be main component, add 2-10wt.%NbC or TaC ceramic metal roll-ring.Although the collars has higher hard
Degree and wearability can improve hot-rolling mill production efficiency, but the cermet mill roll density is big, high energy consumption, has largely used
The WC and Co of poison cause cermet production cost high, to the toxic effect of direct labor.
Publication number CN 101716656A, the China of entitled " a kind of metal ceramic composite roll collar and preparation method thereof " is specially
Profit, it is open to describe a kind of metal ceramic composite roll collar, wherein the cermet as collars is made of following ingredient：Mo:20
~60wt.%, Fe：30~50wt.%, B：1~15wt.%, V：1~15wt.%, Cr：1~15wt.%, Ni：1~
15wt.%, C：0.1~2wt.%.The composite ring has lower cost and good wearability, but ceramic metal roll-ring
In hard phase in-situ preparation, usual coarse grains, material hardness is not high, and brittleness is larger.
Invention content
The present invention is in order to overcome drawbacks described above, and it is an object of the present invention to provide a kind of multiphase titanium diboride/titanium carbonitride-stainless steel gold
Belonging to the preparation method of ceramic hot-rolling mill collars, present component is simple, is free of rare strategic resource W, Co, few using Ni contents,
Nonhazardous acts in production process, and product hardness is high, and wearability is good.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of preparation method of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars, including it is following
Step：
(1) batch mixing：It is TiB according to weight percent2：1~20%, Ti (C, N)：59%~79%, Fe：14%~
30%, Ni：1.8%~4%, Cr：3%~8%, Mn：0.15%~0.35%, Si：0.04%~0.09% and C powder：
0.01%~0.03%, by TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder be uniformly mixed, then argon gas protect
Lower wet-milling, dry, sieving obtains powder；
(2) powder is fitted into compression molding in metal die, collars shape is made；
(3) solid-phase sintering：The green body of collars shape is first put into solid-phase sintering, hot rolling collars precast body is made；
(4) it is machined：Hot rolling collars precast body is machined, the collars size needed；
(5) high temperature sintering：Hot rolling collars precast body after mechanical processing is subjected to high temperature sintering, obtains titanium diboride/carbon
Titanium nitride-stainless steel metal ceramics hot-rolling mill collars.
The present invention, which further improves, to be, wet-milling detailed process is in step (1)：It is put into ball in uniformly mixed powder
In grinding jar, the absolute ethyl alcohol for accounting for uniformly mixed powder quality 1%~2% is added as medium, after being vacuumized in ball grinder
Argon gas is filled, ball material mass ratio is (5~20)：1, rotational speed of ball-mill be 150r/min~300r/min, Ball-milling Time be 4h~
20h。
The present invention, which further improves, to be, dry detailed process is in step (1)：It is dried, is dried using Rotary Evaporators
Dry temperature is 55 DEG C~75 DEG C, vacuum degree 0.09MPa.
The present invention further improve is, in step (2) compression molding be specially：It is protected under 100~400MPa pressure
Press 30s~120s.
The present invention further improve is, in step (3) sintering temperature be 800 DEG C~1000 DEG C, the time be 10~
90min。
The present invention, which further improves, to be, vacuum degree is 10 when step (5) high temperature is sintered-2Pa。
The present invention, which further improves, to be, the temperature being sintered in step (5) is 1200 DEG C~1500 DEG C, and sintering time is
0.5h~1.5h.
The present invention, which further improves, to be, from room temperature in step (5), 1000 DEG C or less heating rates are 8 DEG C/
Min, 1000 DEG C or more heating rates are 4 DEG C/min.
The present invention, which further improves, to be, furnace cooling after sintering in step (5).
The present invention, which further improves, to be, the hardness number ranging from 75HRA of the cermet hot-rolling mill collars~
93HRA, bending strength are 800MPa~1800MPa.
Compared with prior art, the device have the advantages that：Raw material is through batch mixing, wet-milling, drying, molding in the present invention
Molding, vacuum-sintering prepare to be formed, and prepare TiB2/ Ti (C, N)-stainless steel metal ceramic roller ring material, ingredient is simple, without W,
The strategy scarce resource such as Co, it is few using Ni contents, with TiB2/ Ti (C, N) is hard phase, at low cost using stainless steel as Binder Phase
It is honest and clean；Due to not using toxic WC and Co in the present invention, so being acted on direct labor's nonhazardous while production cost is low.This
TiB is added in invention2Liquid B can be formed under one side high-temperature oxidation environment2O3Oxidation film plays the role of lubrication antifriction, separately
One side TiB2As forming core substrate can be used as to promote non-spontaneous forming core, be conducive to obtain the tiny metal pottery of hard phase crystal grain
Porcelain roll.The ceramic metal roll-ring consistency of formation is high, has good wearability, service life is long, light-weight, main mechanical
Index is excellent (75~93HRAHRA of hardness, 800~1800MPa of bending strength), can be used for high temperature finish rolling operating mode, suitable industry pushes away
Extensively.
Description of the drawings
Fig. 1 is the structural schematic diagram of cermet hot-rolling mill collars of the present invention.
Fig. 2 is the electron microscope photo scanning SEM figures of the cermet hot-rolling mill collars of the present invention.
Wherein, 1 is metal collars.
Specific implementation mode
The present invention is further described with reference to embodiments：
The TiB of the present invention2The preparation process of/Ti (C, N)-stainless steel metal ceramics hot-rolling mill collars, the collars group of preparation
As TiB2/ Ti (C, N) composite ganoine phases and stainless steel Binder Phase, stainless steel are made of Fe, Ni, Cr, Mn, Si, C element.Respectively
Composition weight proportioning is TiB2:1~20%, Ti (C, N)：59%~79%, Fe：20%~30%, Ni：2.5%~3.5%,
Cr：5%~6.5%, Mn：0.2%~0.3%, Si：0.05%~0.08%, C：0.02%~0.03%.Specific implementation method
For：1) according to said ratio by powder batch mixing；2) wet-milling is carried out after batch mixing in high-energy planetary ball mill machine；3) by slurry after ball milling
It is dried；4) powder carries out molding with moulding press and collars green body is made after drying；5) by collars green body in vacuum sintering furnace
Solid-phase sintering is carried out, collars precast body is prepared into；6) collars precast body is taken out from vacuum drying oven and carries out cutting finishing；7) add
Cermet precast body is put into progress high temperature sintering in vacuum drying oven and obtains ceramic metal roll-ring after work.Process of the present invention technique is easily grasped
Make, the cermet composition of preparation is simple, is free of W, Co strategy scarce resource, few using Ni contents, of low cost, has good
Wearability, service life is long, light-weight, be suitble to commercial introduction.
Embodiment 1
A kind of multiphase TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include mixed
Material, wet-milling, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing：Commercially available purity is selected to be not less than 99% TiB2, Ti (C, N) (titanium carbonitride), Fe, Ni, Cr, Mn, Si
And the mixing of C powder, each component are TiB according to mass percent2:1%, Ti (C, N)：74%, Fe：17.965%, Ni：
2.25%, Cr：4.5%, Mn：0.2125%, Si：0.055% and C：0.0175%；
(2) ball milling：Raw material upon mixing is put into ball grinder, is added and is accounted for the absolute ethyl alcohol that its mass percent is 2%
As medium, argon gas is filled after being vacuumized in ball grinder, ball material mass ratio is 10：1, rotational speed of ball-mill 300r/min, ball milling
Time is 20h；
(3) dry：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started to warm up
Drying, 55 DEG C of drying temperature, powder is sieved with 200 mesh screens after drying；
(4) compression molding：Powder after drying is fitted into metal die, under 200MPa pressure compression molding obtain mould
Green compact body, dwell time 60s；
(5) solid-phase sintering：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 1000 DEG C, and vacuum degree is
10-2Pa, sintering time are half an hour, and furnace cooling obtains hot rolling collars precast body；
(6) it is machined：The hot rolling collars precast body that sintering obtains is machined with lathe, size required for being made
Collars precast body；
(7) high temperature sintering：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature sintering,
Specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min, burning is then warming up to the heating rate of 4 DEG C/min
Junction temperature, sintering temperature are 1450 DEG C, and sintering time is half an hour, and furnace cooling after sintering obtains cermet hot rolling collars.
As depicted in figs. 1 and 2, Fig. 1 is the structural schematic diagram of metal collars 1, and metal collars 1 is cylindrical, according to reality
Operating mode and demand are prepared into different sizes；Fig. 2 is the Electronic Speculum surface sweeping photo of the ceramic metal roll-ring, it can be seen from the figure that should
Ceramic metal roll-ring compact structure, hard phase crystallite dimension are tiny, about 1.4 microns.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 75HRA, bending strength 850MPa.
Embodiment 2
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder mixing,
Each component is TiB according to mass percent2:5%, Ti (C, N)：70%, Fe：17.965%, Ni：2.25%, Cr：4.5%, Mn：
0.2125%, Si：0.055% and C：0.0175%；
(2) ball milling：Raw material upon mixing is put into ball grinder, is added and is accounted for the anhydrous second that material quality percentage is 2%
Alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 10：1, rotational speed of ball-mill 300r/min, ball
Time consuming is 10h；
(3) dry：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started to warm up
Drying, drying temperature are 70 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding：Powder after drying is fitted into metal die, under 200MPa pressure compression molding obtain mould
Green compact body, dwell time 120s；
(5) solid-phase sintering：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 1000 DEG C, and vacuum degree is
10-2Pa, sintering time are half an hour, and furnace cooling obtains hot rolling collars precast body；
(6) it is machined：The hot rolling collars precast body that sintering obtains is machined with lathe, size required for being made
Collars precast body；
(7) high temperature sintering：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature sintering,
Specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min, burning is then warming up to the heating rate of 4 DEG C/min
Junction temperature, sintering temperature are 1440 DEG C, and sintering time is 1 hour, and furnace cooling after sintering obtains cermet hot rolling collars.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 87HRA, bending strength 1400MPa.
Embodiment 3
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing step：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder
Mixing, each component are TiB according to mass percent2:10%, Ti (C, N)：65%, Fe：17.965%, Ni：2.25%, Cr：
4.5%, Mn：0.2125%, Si：0.055% and C：0.0175%；
(2) ball milling step：Raw material upon mixing is put into ball grinder, be added account for its mass percent be 2% it is anhydrous
Ethyl alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 10：1, rotational speed of ball-mill 300r/min,
Ball-milling Time is 10h；
(3) drying steps：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started
Heating drying, drying temperature are 70 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding step：Powder after drying is fitted into metal die, under 200MPa pressure compression molding obtain
To molding green body, dwell time 120s；
(5) solid-phase sintering step：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 1000 DEG C, vacuum
Degree is 10-2Pa, sintering time are half an hour, and furnace cooling obtains TiB2/ Ti (C, N)-stainless steel metal ceramics hot rolling collars is pre-
Body processed；
(6) mechanical processing steps：The hot rolling collars precast body that sintering obtains is machined with lathe, ruler required for being made
Very little collars precast body；
(7) high temperature sintering step：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature
Then sintering is heated up specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min with the heating rate of 4 DEG C/min
To sintering temperature, sintering temperature is 1440 DEG C, and sintering time 1 hour, furnace cooling after sintering obtains cermet hot roll
Ring.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 86HRA, bending strength 1350MPa.
Embodiment 4
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing step：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder
Mixing, each component are TiB according to mass percent2:15%, Ti (C, N)：60%, Fe：17.965%, Ni：2.25%, Cr：
4.5%, Mn：0.2125%, Si：0.055% and C：0.0175%；
(2) ball milling step：Raw material upon mixing is put into ball grinder, be added account for its mass percent be 2% it is anhydrous
Ethyl alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 10：1, rotational speed of ball-mill 300r/min,
Ball-milling Time is 10h；
(3) drying steps：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started
Heating drying, drying temperature are 70 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding step：Powder after drying is fitted into metal die, under 200MPa pressure compression molding obtain
To molding green body, dwell time 120s；
(5) solid-phase sintering step：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 1000 DEG C, vacuum
Degree is 10-2Pa, sintering time are half an hour, and furnace cooling obtains TiB2/ Ti (C, N)-stainless steel metal ceramics hot rolling collars is pre-
Body processed；
(6) mechanical processing steps：The hot rolling collars precast body that sintering obtains is machined with lathe, ruler required for being made
Very little collars precast body；
(7) high temperature sintering step：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature
Then sintering is heated up specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min with the heating rate of 4 DEG C/min
To sintering temperature, sintering temperature is 1440 DEG C, and sintering time 1 hour, furnace cooling after sintering obtains cermet hot roll
Ring.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 89HRA, bending strength 1550MPa.
Embodiment 5
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing step：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder
Mixing, each component are TiB according to mass percent2:20%, Ti (C, N)：60%, Fe：14%, Ni：2%, Cr：3.78%, Mn：
0.17%, Si：0.04% and C：0.01%；
(2) ball milling step：Raw material upon mixing is put into ball grinder, be added account for its mass percent be 2% it is anhydrous
Ethyl alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 20：1, rotational speed of ball-mill 300r/min,
Ball-milling Time is 20h；
(3) drying steps：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started
Heating drying, drying temperature are 70 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding step：Powder after drying is fitted into metal die, under 400MPa pressure compression molding obtain
To molding green body, dwell time 120s；
(5) solid-phase sintering step：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 1000 DEG C, vacuum
Degree is 10-2Pa, sintering time are half an hour, and furnace cooling obtains TiB2/ Ti (C, N)-stainless steel metal ceramics hot rolling collars is pre-
Body processed；
(6) mechanical processing steps：The hot rolling collars precast body that sintering obtains is machined with lathe, ruler required for being made
Very little collars precast body；
(7) high temperature sintering step：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature
Then sintering is heated up specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min with the heating rate of 4 DEG C/min
To sintering temperature, sintering temperature is 1440 DEG C, and sintering time 1 hour, furnace cooling after sintering obtains cermet hot roll
Ring.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 92HRA, bending strength 1760MPa.
Embodiment 6
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing step：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder
Mixing, each component are TiB according to mass percent2:5%, Ti (C, N)：60%, Fe：24.101%, Ni：3.5%, Cr：7%,
Mn：0.2975%, Si：0.077% and C：0.0245%；
(2) ball milling step：Raw material upon mixing is put into ball grinder, be added account for its mass percent be 2% it is anhydrous
Ethyl alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 20：1, rotational speed of ball-mill 300r/min,
Ball-milling Time is 20h；
(3) drying steps：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started
Heating drying, drying temperature are 70 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding step：Powder after drying is fitted into metal die, under 400MPa pressure compression molding obtain
To molding green body, dwell time 120s；
(5) solid-phase sintering step：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 1000 DEG C, vacuum
Degree is 10-2Pa, sintering time are half an hour, and furnace cooling obtains TiB2/ Ti (C, N)-stainless steel metal ceramics hot rolling collars is pre-
Body processed；
(6) mechanical processing steps：The hot rolling collars precast body that sintering obtains is machined with lathe, ruler required for being made
Very little collars precast body；
(7) high temperature sintering step：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature
Then sintering is heated up specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min with the heating rate of 4 DEG C/min
To sintering temperature, sintering temperature is 1450 DEG C, and sintering time 1 hour, furnace cooling after sintering obtains cermet hot roll
Ring.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 79HRA, bending strength 930MPa.
Embodiment 7
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing step：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder
Mixing, each component are TiB according to mass percent2:5%, Ti (C, N)：70%, Fe：20.66%, Ni：3%, Cr：6%, Mn：
0.255%, Si：0.065% and C：0.02%；
(2) ball milling step：Raw material upon mixing is put into ball grinder, be added account for its mass percent be 1% it is anhydrous
Ethyl alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 5：1, rotational speed of ball-mill 150r/min, ball
Time consuming is 15h；
(3) drying steps：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started
Heating drying, drying temperature are 55 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding step：Powder after drying is fitted into metal die, under 100MPa pressure compression molding obtain
To molding green body, dwell time 120s；
(5) solid-phase sintering step：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 800 DEG C, vacuum degree
It is 10-2Pa, sintering time 90min, furnace cooling obtain TiB2/ Ti (C, N)-stainless steel metal ceramics hot rolling collars is prefabricated
Body；
(6) mechanical processing steps：The hot rolling collars precast body that sintering obtains is machined with lathe, ruler required for being made
Very little collars precast body；
(7) high temperature sintering step：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature
Then sintering is heated up specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min with the heating rate of 4 DEG C/min
To sintering temperature, sintering temperature is 1200 DEG C, and sintering time 1.5 hours, furnace cooling after sintering obtains cermet hot roll
Ring.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 87HRA, bending strength 1400MPa.
Embodiment 8
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing step：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder
Mixing, each component are TiB according to mass percent2:3%, Ti (C, N)：62%, Fe：24.101%, Ni：3.5%, Cr：7%,
Mn：0.2975%, Si：0.077% and C：0.0245%；
(2) ball milling step：Raw material upon mixing is put into ball grinder, be added account for its mass percent be 1% it is anhydrous
Ethyl alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 15：1, rotational speed of ball-mill 200r/min,
Ball-milling Time is 8h；
(3) drying steps：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started
Heating drying, drying temperature are 75 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding step：Powder after drying is fitted into metal die, under 400MPa pressure compression molding obtain
To molding green body, dwell time 30s；
(5) solid-phase sintering step：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 1000 DEG C, vacuum
Degree is 10-2Pa, sintering time 10min, furnace cooling obtain TiB2/ Ti (C, N)-stainless steel metal ceramics hot rolling collars is prefabricated
Body；
(6) mechanical processing steps：The hot rolling collars precast body that sintering obtains is machined with lathe, ruler required for being made
Very little collars precast body；
(7) high temperature sintering step：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature
Then sintering is heated up specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min with the heating rate of 4 DEG C/min
To sintering temperature, sintering temperature is 1500 DEG C, and sintering time 0.5 hour, furnace cooling after sintering obtains cermet hot roll
Ring.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 80HRA, bending strength 1000MPa.
Embodiment 9
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing step：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder
Mixing, each component are TiB according to mass percent2:4.979%, Ti (C, N)：70%, Fe：19.65%, Ni：1.8%, Cr：
3.345%, Mn：0.15%, Si：0.058% and C：0.018%；
(2) ball milling step：Raw material upon mixing is put into ball grinder, be added account for its mass percent be 2% it is anhydrous
Ethyl alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 20：1, rotational speed of ball-mill 250r/min,
Ball-milling Time is 4h；
(3) drying steps：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started
Heating drying, drying temperature are 60 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding step：Powder after drying is fitted into metal die, under 300MPa pressure compression molding obtain
To molding green body, dwell time 70s；
(5) solid-phase sintering step：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 900 DEG C, vacuum degree
It is 10-2Pa, sintering time 50min, furnace cooling obtain TiB2/ Ti (C, N)-stainless steel metal ceramics hot rolling collars is prefabricated
Body；
(6) mechanical processing steps：The hot rolling collars precast body that sintering obtains is machined with lathe, ruler required for being made
Very little collars precast body；
(7) high temperature sintering step：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature
Then sintering is heated up specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min with the heating rate of 4 DEG C/min
To sintering temperature, sintering temperature is 1300 DEG C, and sintering time 1 hour, furnace cooling after sintering obtains cermet hot roll
Ring.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 86.5HRA, bending strength 1400MPa.
Embodiment 10
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing step：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder
Mixing, each component are TiB according to mass percent2:1%, Ti (C, N)：59%, Fe：29.9%, Ni：1.8%, Cr：8%, Mn：
0.25%, Si：0.04% and C：0.01%；
(2) ball milling step：Raw material upon mixing is put into ball grinder, be added account for its mass percent be 1% it is anhydrous
Ethyl alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 15：1, rotational speed of ball-mill 200r/min,
Ball-milling Time is 8h；
(3) drying steps：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started
Heating drying, drying temperature are 75 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding step：Powder after drying is fitted into metal die, under 400MPa pressure compression molding obtain
To molding green body, dwell time 30s；
(5) solid-phase sintering step：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 1000 DEG C, vacuum
Degree is 10-2Pa, sintering time 10min, furnace cooling obtain TiB2/ Ti (C, N)-stainless steel metal ceramics hot rolling collars is prefabricated
Body；
(6) mechanical processing steps：The hot rolling collars precast body that sintering obtains is machined with lathe, ruler required for being made
Very little collars precast body；
(7) high temperature sintering step：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature
Then sintering is heated up specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min with the heating rate of 4 DEG C/min
To sintering temperature, sintering temperature is 1500 DEG C, and sintering time 0.5 hour, furnace cooling after sintering obtains cermet hot roll
Ring.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 75HRA, bending strength 800MPa.
Embodiment 11
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing step：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder
Mixing, each component are TiB according to mass percent2:1.53%, Ti (C, N)：79%, Fe：14%, Ni：2%, Cr：3%, Mn：
0.35%, Si：0.09% and C：0.03%；
(2) ball milling step：Raw material upon mixing is put into ball grinder, be added account for its mass percent be 2% it is anhydrous
Ethyl alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 20：1, rotational speed of ball-mill 250r/min,
Ball-milling Time is 4h；
(3) drying steps：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started
Heating drying, drying temperature are 60 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding step：Powder after drying is fitted into metal die, under 300MPa pressure compression molding obtain
To molding green body, dwell time 70s；
(5) solid-phase sintering step：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 900 DEG C, vacuum degree
It is 10-2Pa, sintering time 50min, furnace cooling obtain TiB2/ Ti (C, N)-stainless steel metal ceramics hot rolling collars is prefabricated
Body；
(6) mechanical processing steps：The hot rolling collars precast body that sintering obtains is machined with lathe, ruler required for being made
Very little collars precast body；
(7) high temperature sintering step：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature
Then sintering is heated up specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min with the heating rate of 4 DEG C/min
To sintering temperature, sintering temperature is 1300 DEG C, and sintering time 1 hour, furnace cooling after sintering obtains cermet hot roll
Ring.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 92HRA, bending strength 1730MPa.
Embodiment 12
A kind of TiB2The preparation method of/Ti (C, N)-stainless steel metal ceramics hot rolling collars, preparation sequence include batch mixing, wet
Mill, drying, compression molding, vacuum solid-phase sintering, mechanical processing, high-temperature liquid-phase sintering step, it is specific as follows：
(1) batch mixing step：Purity is selected to be not less than 99% TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder
Mixing, each component are TiB according to mass percent2:4.39%, Ti (C, N)：70%, Fe：15%, Ni：4%, Cr：6%, Mn：
0.15%, Si：0.45% and C：0.01%；
(2) ball milling step：Raw material upon mixing is put into ball grinder, be added account for its mass percent be 2% it is anhydrous
Ethyl alcohol fills argon gas as medium after being vacuumized in ball grinder, ball material mass ratio is 20：1, rotational speed of ball-mill 250r/min,
Ball-milling Time is 4h；
(3) drying steps：Slurry after ball milling is placed in Rotary Evaporators, is first vacuumized, air pressure is down to 0.09MPa and is started
Heating drying, drying temperature are 60 DEG C, and powder is sieved with 200 mesh screens after drying；
(4) compression molding step：Powder after drying is fitted into metal die, under 300MPa pressure compression molding obtain
To molding green body, dwell time 70s；
(5) solid-phase sintering step：Molding green body is put into vacuum sintering furnace and is sintered, sintering temperature is 900 DEG C, vacuum degree
It is 10-2Pa, sintering time 50min, furnace cooling obtain TiB2/ Ti (C, N)-stainless steel metal ceramics hot rolling collars is prefabricated
Body；
(6) mechanical processing steps：The hot rolling collars precast body that sintering obtains is machined with lathe, ruler required for being made
Very little collars precast body；
(7) high temperature sintering step：The collars precast body obtained after mechanical processing is put into vacuum sintering furnace and carries out high temperature
Then sintering is heated up specifically, being warming up to 1000 DEG C from room temperature with the heating rate of 8 DEG C/min with the heating rate of 4 DEG C/min
To sintering temperature, sintering temperature is 1300 DEG C, and sintering time 1 hour, furnace cooling after sintering obtains cermet hot roll
Ring.
The hardness of cermet hot rolling collars manufactured in the present embodiment is 86HRA, bending strength 1370MPa.
Claims (10)
1. a kind of preparation method of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars, feature exist
In including the following steps：
(1) batch mixing：It is TiB according to weight percent2：1~20%, Ti (C, N)：59%~79%, Fe：14%~30%, Ni：
1.8%~4%, Cr：3%~8%, Mn：0.15%~0.35%, Si：0.04%~0.09% and C powder：0.01%~
0.03%, by TiB2, Ti (C, N), Fe, Ni, Cr, Mn, Si and C powder be uniformly mixed, then wet-milling under protection of argon gas, do
Dry, sieving obtains powder；
(2) powder is fitted into compression molding in metal die, collars shape is made；
(3) solid-phase sintering：The green body of collars shape is first put into solid-phase sintering, hot rolling collars precast body is made；
(4) it is machined：Hot rolling collars precast body is machined, the collars size needed；
(5) high temperature sintering：Hot rolling collars precast body after mechanical processing is subjected to high temperature sintering, obtains titanium diboride/carbon nitridation
Titanium-stainless cermet hot-rolling mill collars.
2. a kind of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars according to claim 1
Preparation method, which is characterized in that wet-milling detailed process is in step (1)：It is put into ball grinder, is added in uniformly mixed powder
The absolute ethyl alcohol of uniformly mixed powder quality 1%~2% is accounted for as medium, argon gas, ball are filled after being vacuumized in ball grinder
Expect that mass ratio is (5~20)：1, rotational speed of ball-mill is 150r/min~300r/min, and Ball-milling Time is 4h~20h.
3. a kind of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars according to claim 1
Preparation method, which is characterized in that dry detailed process is in step (1)：It is dried using Rotary Evaporators, drying temperature is 55 DEG C
~75 DEG C, vacuum degree 0.09MPa.
4. a kind of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars according to claim 1
Preparation method, which is characterized in that in step (2) compression molding be specially：Pressurize 30s~120s under 100~400MPa pressure.
5. a kind of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars according to claim 1
Preparation method, which is characterized in that sintering temperature is 800 DEG C~1000 DEG C in step (3), and the time is 10~90min.
6. a kind of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars according to claim 1
Preparation method, which is characterized in that vacuum degree is 10 when step (5) high temperature is sintered-2Pa。
7. a kind of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot mill roller according to claim 1 or 6
The preparation method of ring, which is characterized in that the temperature being sintered in step (5) is 1200 DEG C~1500 DEG C, sintering time be 0.5h~
1.5h。
8. a kind of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars according to claim 7
Preparation method, which is characterized in that from room temperature in step (5), 1000 DEG C or less heating rates are 8 DEG C/min, 1000 DEG C with
Upper heating rate is 4 DEG C/min.
9. a kind of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars according to claim 1
Preparation method, which is characterized in that furnace cooling after sintering in step (5).
10. a kind of multiphase titanium diboride/titanium carbonitride-stainless steel metal ceramics hot-rolling mill collars according to claim 1
Preparation method, which is characterized in that hardness number ranging from 75HRA~93HRA of the cermet hot-rolling mill collars, bending strength
For 800MPa~1800MPa.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115044819A (en) * | 2022-07-28 | 2022-09-13 | 西安稀有金属材料研究院有限公司 | High-hardness in-situ reinforced iron-based composite material and preparation method thereof |
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| CN1061907C (en) * | 1996-08-28 | 2001-02-14 | 邢台市特种冶金轧辊厂 | Cermet roller ring |
| CN1843644A (en) * | 2006-04-30 | 2006-10-11 | 宣化盛龙冶金设备制造厂 | Hard alloy composite roll collar for high-speed wire production line and method for manufacturing the same |
| WO2012146465A3 (en) * | 2011-04-27 | 2013-04-04 | Siemens Aktiengesellschaft | Method for the production of a porous element, and cell of a rechargeable oxide battery |
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2018
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| CN1061907C (en) * | 1996-08-28 | 2001-02-14 | 邢台市特种冶金轧辊厂 | Cermet roller ring |
| CN1843644A (en) * | 2006-04-30 | 2006-10-11 | 宣化盛龙冶金设备制造厂 | Hard alloy composite roll collar for high-speed wire production line and method for manufacturing the same |
| WO2012146465A3 (en) * | 2011-04-27 | 2013-04-04 | Siemens Aktiengesellschaft | Method for the production of a porous element, and cell of a rechargeable oxide battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044819A (en) * | 2022-07-28 | 2022-09-13 | 西安稀有金属材料研究院有限公司 | High-hardness in-situ reinforced iron-based composite material and preparation method thereof |
| CN115044819B (en) * | 2022-07-28 | 2022-11-18 | 西安稀有金属材料研究院有限公司 | High-hardness in-situ reinforced iron-based composite material and preparation method thereof |
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