CN106435322B - A kind of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring - Google Patents
A kind of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring Download PDFInfo
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- CN106435322B CN106435322B CN201610944921.2A CN201610944921A CN106435322B CN 106435322 B CN106435322 B CN 106435322B CN 201610944921 A CN201610944921 A CN 201610944921A CN 106435322 B CN106435322 B CN 106435322B
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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
- C22C29/06—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 based on carbides, but not containing other metal compounds
- C22C29/08—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 based on carbides, but not containing other metal compounds based on tungsten carbide
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
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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
- C22C29/02—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
- C22C29/06—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 based on carbides, but not containing other metal compounds
- C22C29/067—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 based on carbides, but not containing other metal compounds comprising a particular metallic binder
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Abstract
The invention discloses a kind of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring, alloying components are as follows: WC:70 ~ 92wt.%, Fe:3.2 ~ 24wt.%, Ni:3 ~ 12wt.%, Co:1 ~ 9wt.%, Cr:0.2 ~ 1.0wt.%.The Fe for containing 26 ~ 44.2wt.% in alloy adhesive is austenite when the Co of 10 ~ 30wt.%, contains the Fe of 44.2 ~ 58.7wt.%, and when Co of 10 ~ 30wt.% is austenite+martensite, contains the Fe of 58.7 ~ 79.4wt.%, and when Co of 10 ~ 30wt.% is martensite.The present invention changes austenite and martensite quantity and form in binder and prepares with low cost, the high-performance carbide collars of high service life, intensity, toughness and wearability by adjusting Fe and Co content in alloy adhesive.
Description
Technical field
The present invention relates to a kind of carbide roll ring more particularly to a kind of low-cost and high-performance WC-Fe-Ni-Co-Cr
Carbide roll ring.
Background technique
With the fast development of China's rolling industry, the requirement to collars quality and precision is also being continuously improved, and tradition is high
Ferrochrome, high chrome and high speed steel material collars have been unable to satisfy the rapid development of steel industry.Carbide roll ring is due to having
Hardness is high, wearability is good, high mechanical strength, good impact resistance, elasticity modulus are high, linear expansion coefficient is small, corrosion resistance and resistant to high temperatures
The features such as oxidation susceptibility is good.78 ~ 94HRA of hardness at room temperature of carbide roll ring, and room temperature is rigidly good, and no obvious plasticity becomes
Shape, Young's modulus are 2 ~ 3 times of steel, and high temperature red hardness is good, and 600 DEG C are more than high-speed steel, and 1000 DEG C hard more than the room temperature of carbon steel
Angle value is current, mainly uses the carbide roll ring of two kinds of materials of WC-Co and WC-Co-Ni in the market.Carbide roll ring material
The content of middle bonding phase generally adjusts between 8~25wt.%, to meet the different toughness of collars and wearability requirement.
Carbide roll ring has been widely used in the Rolling Productions such as high-speed rod, bar, screw-thread steel, seamless steel pipe, and
And there is broad mass market prospect.But carbide roll ring is expensive compared with traditional steel knot collars, limits to a certain extent
The use and development of carbide roll ring are made.Co is a kind of extremely important and rare strategic resource, global reserves pole simultaneously
Its is limited, expensive and go up year by year, and pollutes environment, has toxicity.Reduce Co's in carbide roll ring production
It uses, can reduce cost, reduce consuming excessively for resource, be conducive to the sustainable health development of collars manufacturing enterprise.
The novel product that Co does bonding phase can partly or completely be substituted by developing, and can with use in the market
Carbide roll ring performance quite or it is higher be current scientific worker's main direction of studying.Using Fe, Ni and Cr metal portion
Divide and Co is replaced to do the use for being bonded and mutually capable of substantially saving Co, the addition of Cr can strengthen binder, improve wearability, corrosion resistance
And high temperature oxidation resistance.The WC-Fe-Ni-Co-Cr carbide roll ring developed can be in the service life and property for improving collars
The production cost of collars is greatly reduced on the basis of energy.
The WC-Fe-Ni-Co-Cr carbide roll ring of exploitation, according to specific rolling operating condition and different use environments to rolling
The requirement of roller performance, different finishing rolling mills and pre-finishing mill frame need to select the carbide roll ring of different binder tissues, with
Realize the best match of each rack trade mark.Austenitic structure has high toughness in collars, and martensite has high hardness and resistance to
Mill property, austenite+martensitic structure is with high toughness and wearability.By WC-Fe-Ni-Co-Cr to carbide roll ring
The special designing of ingredient is greatly reduced the production cost of collars and collars is made to have high intensity, toughness and wearability.It makes
It can be compared favourably with external import collars with service life, product quality, cheap, cost performance is high, is particularly suitable for promoting and applying.
Summary of the invention
The purpose of the present invention is mention for the characteristic that existing carbide roll ring is at high cost, performance is poor and the service life is low at present
More less expensive than existing carbide roll ring price for a kind of cost, performance is more excellent, the high property of a kind of low cost that the service life is longer
Energy WC-Fe-Ni-Co-Cr carbide roll ring, to meet the rolling requirements of high-speed rod.
To achieve the above object, the invention adopts the following technical scheme:
A kind of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring, the specific ingredient of the carbide roll ring are as follows:
WC:70 ~ 92wt.%, Fe:3.2 ~ 24wt.%, Ni:3 ~ 12wt.%'s, Co:1 ~ 9wt.%, Cr:0.2 ~ 1.0wt.%.
Ratio shared by Fe is 26 ~ 79.4wt.% in binder, and ratio shared by Co is 10 ~ 30wt.% in binder.
The ingredient in binder is adjusted, is provided to change austenite and martensite quantity and form, preparation in binder
There are low production cost, high service life, high intensity, the high-performance WC-Fe-Ni-Co-Cr hard of toughness and wearability
Alloy collars.
The binder tissue of carbide roll ring as the Fe for containing 26 ~ 44.2wt.% in binder, the Co of 10 ~ 30wt.%
For austenite, which has high toughness and resistance to crack extension ability.
As the Fe for containing 44.2 ~ 58.7wt.% in the binder of alloy, the Co of 10 ~ 30wt.%, carbide roll ring is viscous
Knot agent group becomes austenite+martensite and tissue coexists, and alloy has preferable toughness and moderate wearability, and versatility is best.
The binder group of carbide roll ring as the Fe for containing 58.7 ~ 79.4wt.% in binder, the Co of 10 ~ 30wt.%
It is woven to martensite, alloy has highest intensity and wearability.
It is 2.5-15 μm of WC powder (carbon content is 6.01 ~ 6.25wt.%) that average grain size is selected when ingredient, and clay diameter is
0.5-2.0 μm of Fe powder, the Ni powder that partial size is 0.5-2.0 μm, the Co powder and partial size that partial size is 1.0-2.0 μm are 1.0-2.0
μm Cr powder.
A kind of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring of the present invention, by the WC of certain particle size
Powder, Fe, Ni, Co and Cr powder match according to a certain percentage, and according to properties of product needs, Fe's and Co contains in adjustment bonding phase
Amount achievees the purpose that change austenite and martensite quantity and form in binder, through ball milling, dry, compacting, and low pressure sintering system
Corresponding carbide roll ring is obtained, the specific process steps are as follows:
(1) ball mill mixing: the WC powder of certain content, Fe powder, Ni powder, Co powder and Cr powder are disposably mixed by a certain percentage
It completes, using gasoline as ball-milling medium, wherein the gasoline of 200 ~ 400ml is added in per kilogram mixture, the use of diameter is 6 ~ 12mm
YG8 sintered carbide ball, wherein the mass ratio of sintered carbide ball and mixture be (3 ~ 5): 1, rotational speed of ball-mill be 60 ~ 250rpm,
12 ~ 48h of ball mill mixing on tumbling ball mill, after ball mill mixing, slurry in vacuum environment dry 2 at 60 ~ 180 DEG C ~
12h；
(2) it mixes glue: doing forming agent using synthetic rubber, mix rubber by account for mixture quality percentage 0.75 ~ 1.5%,
In mixture after ball milling drying is added, it is dried, pelletizes after evenly mixing；
(3) compression moulding: will the mixed powder as made from above-mentioned technique, be fitted into the mold for being used to prepare collars, lead to
It crosses press and is pressed into carbide roll ring green compact under 10 ~ 250MPa pressure；
(4) dumping and sintering: the good carbide roll ring green compact of compression moulding is placed in draft glue discharging furnace at 450 ~ 750 DEG C
60 ~ 80min of dumping, dumping is placed in gas pressure sintering furnace 60 ~ 120 min of sintering at 1350 ~ 1440 DEG C later, in sintering process
In be filled with 4.5 ~ 6.0MPa pressure argon gas carry out pressure sintering.
The invention patent has following remarkable advantages and substantial advance compared with existing collars:
(1) binder of Fe, Ni, Co and Cr as the carbide roll ring is used, is greatly saved rare and expensive
Cobalt resource, while reducing the production cost of carbide roll ring；
(2) by adjusting Fe and Co content in the hardmetall binder, change austenite and martensite number in binder
Amount and form make carbide roll ring meet different service performance requirements, according to specific rolling operating condition and different use ring
The needs that border requires prepare the carbide roll ring material with high-strength, high-ductility, high abrasion；
(3) hardness of WC-Fe-Ni-Co-Cr carbide roll ring be 854~1100MPa, the curved Qiang Du≤2750MPa of Kang,
Duan splits Ren≤18.97MPa.m1/2, abrasion Shuai≤1.94 × 10-7mm3The carbide roll ring of/(N.m), exploitation are comprehensive
It can be better than the carbide roll ring of the existing trade mark.
Detailed description of the invention
Fig. 1 is the XRD material phase analysis figure of WC-Fe-Ni-Co-Cr hard alloy obtained in the embodiment of the present invention 1.
Fig. 2 is the TEM transmission electron microscope photo of WC-Fe-Ni-Co-Cr hard alloy obtained in the embodiment of the present invention 1.
Fig. 3 is the XRD material phase analysis figure of WC-Fe-Ni-Co-Cr hard alloy obtained in the embodiment of the present invention 2.
Fig. 4 is the TEM transmission electron microscope photo of WC-Fe-Ni-Co-Cr hard alloy obtained in the embodiment of the present invention 2.
Fig. 5 is the XRD material phase analysis figure of WC-Fe-Ni-Co-Cr hard alloy obtained in the embodiment of the present invention 3.
Fig. 6 is the TEM transmission electron microscope photo of WC-Fe-Ni-Co-Cr hard alloy obtained in the embodiment of the present invention 3.
Specific embodiment
Embodiment 1
A kind of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring, the control of ratio shared by Fe exists in binder
42.5wt.%.Specific alloying component are as follows: Fe powder (the partial size 0.5- of 80wt.%WC powder (6-15 μm of mean grain size) 8.5wt.%
2.0 μm), 8.2wt.%Ni powder (partial size is 0.5-2.0 μm), the Co powder (partial size is 1.0-2.0 μm) of 2.7 wt.%, 0.6wt.%Cr
Powder (partial size is 1.0-2.0 μm).Above-mentioned powder is subjected to ball mill mixing as required, is closed using the YG8 hard that diameter is 6 ~ 12mm
For gold goal as abrasive body, ball material mass ratio is 4:1, and using gasoline as ball-milling medium, 200 ~ 400ml is added by per kilogram mixture
Ratio be added, rotational speed of ball-mill is 60 ~ 250rpm, the ball milling 16h on tumbling ball mill, and after ball mill mixing, slurry is in vacuum ring
4h is dried in border at 80 DEG C.0.8wt.% synthetic rubber is added and does forming agent, hard alloy roller is pressed under 120MPa pressure
Green compact is placed in draft glue discharging furnace the dumping 65min at 580 DEG C by ring green compact, after dumping, the gas pressure sintering furnace at 1385 DEG C
In, it is sintered 60 min under 5MPa pressure, prepares the carbide roll ring of high-strength, high-ductility, high abrasion.The alloy of preparation
XRD material phase analysis is shown in Fig. 1, knows that binder tissue is mainly austenite by Fig. 1.Austenite Morphology is as shown in Figure 2 in binder
TEM transmission electron microscope photo.
Embodiment 2
A kind of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring, the control of ratio shared by Fe exists in binder
57.5wt.%.Specific alloying component are as follows: Fe powder (the partial size 0.5- of 80wt.%WC powder (6-15 μm of mean grain size) 11.5wt.%
2.0 μm), 5.9wt.%Ni powder (partial size is 0.5-2.0 μm), the Co powder (partial size is 1.0-2.0 μm) of 2.1 wt.%, 0.5wt.%Cr
Powder (partial size is 1.0-2.0 μm).Above-mentioned powder is subjected to ball mill mixing as required, is closed using the YG8 hard that diameter is 6 ~ 12mm
For gold goal as abrasive body, ball material mass ratio is 4:1, and using gasoline as ball-milling medium, 200 ~ 400ml is added by per kilogram mixture
Ratio be added, rotational speed of ball-mill is 60 ~ 250rpm, the ball milling 16h on tumbling ball mill, and after ball mill mixing, slurry is in vacuum ring
4h is dried in border at 80 DEG C.0.8wt.% synthetic rubber is added and does forming agent, hard alloy roller is pressed under 120MPa pressure
Green compact is placed in draft glue discharging furnace the dumping 65min at 580 DEG C by ring green compact, after dumping, the gas pressure sintering furnace at 1385 DEG C
In, it is sintered 60 min under 5MPa pressure, prepares the carbide roll ring of high-strength, high-ductility, high abrasion.The alloy of preparation
XRD material phase analysis is shown in Fig. 3, knows that binder tissue is mainly austenite+martensite by Fig. 3.Austenite and martensite in binder
The TEM transmission electron microscope photo of quantity and form as shown in Figure 4.
Embodiment 3
A kind of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring, the control of ratio shared by Fe exists in binder
71.5wt.%.Specific alloying component are as follows: Fe powder (the partial size 0.5- of 80wt.%WC powder (6-15 μm of mean grain size) 14.3wt.%
2.0 μm), 3.2wt.%Ni powder (partial size is 0.5-2.0 μm), 1.2 wt.% Co powder (partial size is 1.0-2.0 μm), 0.6wt.%Cr
Powder (partial size is 1.0-2.0 μm).Above-mentioned powder is subjected to ball mill mixing as required, is closed using the YG8 hard that diameter is 6 ~ 12mm
For gold goal as abrasive body, ball material mass ratio is 4:1, and using gasoline as ball-milling medium, 200 ~ 400ml is added by per kilogram mixture
Ratio be added, rotational speed of ball-mill is 60 ~ 250rpm, the ball milling 16h on tumbling ball mill, and after ball mill mixing, slurry is in vacuum ring
4h is dried in border at 80 DEG C.0.8wt.% synthetic rubber is added and does forming agent, hard alloy roller is pressed under 120MPa pressure
Green compact is placed in draft glue discharging furnace the dumping 65min at 580 DEG C by ring green compact, after dumping, the gas pressure sintering furnace at 1385 DEG C
In, it is sintered 60 min under 5MPa pressure, prepares the carbide roll ring of high-strength, high-ductility, high abrasion.The alloy of preparation
XRD material phase analysis is shown in Fig. 5, knows that binder tissue is mainly martensite by Fig. 5.Martensite quantity and form are shown in Fig. 6 in binder
Shown in TEM transmission electron microscope photo.
To WC-Fe-Ni-Co-Cr carbide roll ring prepared by embodiment 1, embodiment 2 and embodiment 3, carry out hard
Degree, bending strength, fracture toughness and friction and wear test.Wherein comparative example is that the WC-Co base for the same type bought in the market is hard
Matter alloy roller ring material (YG20), the performance of embodiment and comparative example are to test to obtain in identical experiment method, embodiment with it is right
The power performance of ratio is detailed in the following table 1:
| Hardness (HV10/ MPa) | Bending strength/MPa | Fracture toughness/MPa.m1/2 | Wear rate/10-7mm3/(N.m) | |
| Embodiment 1 | 854 | 2799 | 20.75 | 1.94 |
| Embodiment 2 | 958 | 2812 | 20.01 | 1.75 |
| Embodiment 3 | 1086 | 3003 | 18.97 | 1.60 |
| Comparative example YG20 | 952 | 2546 | 19.63 | 1.81 |
The hardness of WC-Fe-Ni-Co-Cr carbide roll ring is 854~1100MPa, bending strength as can be seen from Table 1
≤ 2750MPa, Duan split Ren≤18.97MPa.m1/2, abrasion Shuai≤1.94 × 10-7mm3/(N.m)。
Claims (3)
1. a kind of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring, it is characterised in that specific ingredient is as follows: WC:70
~92wt.%, Fe:3.2~24wt.%, Ni:3~12wt.%'s, Co:1~9wt.%, Cr:0.2~1.0wt.%, wherein
Shared ratio is 26~79.4wt.% to Fe in a binder, and shared ratio is 10~30wt.% to Co in a binder, is adjusted
Ingredient in whole binder changes austenite and martensite quantity and form in binder, prepares and be produced into cheap
This and high-performance collars, the content of Fe is more than or equal to 26wt.% but is less than 44.2wt.% in binder, and the content of Co is 10~
The binder tissue of carbide roll ring is austenite when 30wt.%, in binder the content of Fe be more than or equal to 44.2wt.% but
Less than 58.7wt.%, the binder of carbide roll ring is that austenite+martensite coexists when the content of Co is 10~30wt.%
It organizes, the content of Fe is more than or equal to 58.7wt.% but is less than 79.4wt.% in binder, when the content of Co is 10~30wt.%
The binder tissue of carbide roll ring is martensite.
2. a kind of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring according to claim 1, feature exist
In: the partial size of the WC powder is 2.5-15 μm, and in 6.01~6.25wt.%, the partial size of Fe powder is the carbon content control of WC
0.5-2.0 μm, the partial size of Ni powder is 0.5-2.0 μm, and the partial size of Co powder is that the partial size of 1.0-2.0 μm and Cr powder is 1.0-2.0
μm。
3. a kind of preparation of low-cost and high-performance WC-Fe-Ni-Co-Cr carbide roll ring according to claim 1 or 2
Method, which is characterized in that using gasoline as ball-milling medium, use diameter be 6~12mm YG8 sintered carbide ball as grind
Ball, the mass ratio of ball material are (3~5): 1, rotational speed of ball-mill is 60~250rpm, and each component WC, Fe, Ni, Co and Cr powder is existed
12~48h of ball mill mixing on tumbling ball mill, after ball mill mixing, slurry in vacuum environment dry 2 at 60~180 DEG C~
12h does forming agent using 0.75~1.5wt.% synthetic rubber, carbide roll ring pressure is pressed under 10~250MPa pressure
The carbide roll ring green compact of compression moulding is placed in draft glue discharging furnace dumping 60min~80min at 450~750 DEG C by base, row
Glue is placed in gas pressure sintering furnace at 1350~1440 DEG C 60~120min of sintering later, it is filled with 4.5 during the sintering process~
The argon gas of 6.0MPa pressure carries out pressure sintering, and the carbide roll ring material of respective organization structure is made.
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| CN108085556A (en) * | 2017-12-21 | 2018-05-29 | 洛阳名力科技开发有限公司 | A kind of preparation method of WC-Fe-Ni-Co hard alloy |
| BR112022011745A2 (en) * | 2019-12-20 | 2022-11-08 | Sandvik Coromant Ab | A CUTTING TOOL |
| CN111411284A (en) * | 2020-04-29 | 2020-07-14 | 中南大学 | Cobalt-nickel-iron-based hard alloy material and preparation method thereof |
| CN111778435A (en) * | 2020-05-28 | 2020-10-16 | 南通德元机械制造有限公司 | Hard alloy roll collar and preparation method thereof |
| CN113462946A (en) * | 2021-06-03 | 2021-10-01 | 中南大学 | Cobalt-nickel-iron-chromium-based hard alloy material and preparation method thereof |
| CN113634752A (en) * | 2021-08-20 | 2021-11-12 | 河源富马硬质合金股份有限公司 | Manufacturing method of high-toughness polycrystalline hard alloy extruded round rod |
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| JPS50110909A (en) * | 1974-02-13 | 1975-09-01 | ||
| JPS609849A (en) * | 1983-06-27 | 1985-01-18 | Daijietsuto Kogyo Kk | Sintered hard alloy with high strength and oxidation resistance |
| JPS6017047A (en) * | 1983-07-09 | 1985-01-28 | Sumitomo Electric Ind Ltd | Sintered hard alloy for hot plastic working |
| JPS6089557A (en) * | 1983-10-20 | 1985-05-20 | Showa Denko Kk | Powdered material for thermal spray and its manufacture |
| JPS61194147A (en) * | 1985-02-22 | 1986-08-28 | Hitachi Metals Ltd | Sintered hard alloy |
| DE19827861A1 (en) * | 1997-06-27 | 1999-01-07 | Mitsubishi Materials Corp | Thermal shock resistant composite roll |
| US6024776A (en) * | 1997-08-27 | 2000-02-15 | Kennametal Inc. | Cermet having a binder with improved plasticity |
| CN103160724B (en) * | 2011-12-15 | 2015-11-04 | 株洲钻石切削刀具股份有限公司 | A kind of Wimet for cast iron turnery processing and hard alloy coated blade thereof |
| CN104894452B (en) * | 2015-07-03 | 2017-09-12 | 中南大学 | A kind of WC Fe Ni carbide roll rings and preparation method thereof |
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