CN106521300B - High hardness wear-resisting clad steel plate and preparation method thereof - Google Patents

High hardness wear-resisting clad steel plate and preparation method thereof Download PDF

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Publication number
CN106521300B
CN106521300B CN201611252087.7A CN201611252087A CN106521300B CN 106521300 B CN106521300 B CN 106521300B CN 201611252087 A CN201611252087 A CN 201611252087A CN 106521300 B CN106521300 B CN 106521300B
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wear
resisting
steel plate
substrate
alloy
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CN106521300A (en
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冮彪
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Beijing Yidejia Thermoelectric Engineering Equipment Co Ltd
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Beijing Yidejia Thermoelectric Engineering Equipment Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/06—Cast-iron alloys containing chromium
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/10—Cast-iron alloys containing aluminium or silicon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
    • C23C24/106—Coating with metal alloys or metal elements only

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention relates to a kind of wearing plate, specifically discloses a kind of high hardness wear-resisting clad steel plate, and the high hardness wear-resisting clad steel plate, including substrate and the alloy wear-resisting layer positioned at substrate surface, the alloy wear-resisting layer include the component of following weight percentage：C：5 12%, Cr：25 42%, Si：0.15 1.5%, Mn：0.3 1.0%, Co：0.5 1%, V：1.0 1.5%, Mo：0.8 1.3%, Y：0.6 0.8%, W：1.2 2.0%, Fe：Surplus.The invention also discloses the preparation method of high hardness wear-resisting clad steel plate.The high hardness wear-resisting clad steel plate of the present invention passes through each component and its content in optimized alloy wearing layer, the interphase interaction of each element, obtained clad steel plate has the characteristics of surface is smooth, wearability is good, wear-resisting area top layer and bottom hardness are close, service life is long, and possesses good metallurgical binding intensity, impact resistance, high temperature resistant and decay resistance.

Description

High hardness wear-resisting clad steel plate and preparation method thereof
Technical field
The present invention relates to a kind of wearing plate, and in particular to a kind of high hardness wear-resisting clad steel plate and preparation method thereof.
Background technology
High-abrasive material is widely used in the industries such as electric power, coal, engineering machinery, cement, metallurgy and mine.The kind of high-abrasive material Class is various, widely used.High-abrasive material in the market mainly has：Cast stone, polymeric liner and steel alloy etc..With society Development, requirement of the people to high-abrasive material also more and more higher.
The content of Cr27C5 in the relatively low therefore prepared high-abrasive material of Cr contents in traditional high-abrasive material compared with It is few, the Cr27C5 skewness in high-abrasive material is easily caused, the hardness of high-abrasive material is small, wears no resistance.
Chinese patent application 201310756251.8 discloses a kind of high abrasion-resistant bimetal abrasion-proof composite plate, including mild steel Plate or low-carbon alloy steel plate, wear-resistant alloy layer is welded with low carbon steel plate or the low-carbon alloy steel plate, it is characterised in that：Account for resistance to The percentages of break-in layer gold gross mass, each component content is as follows in the wear-resistant alloy layer：C：0.35~0.55%；Si：2~ 2.4%；Mn：2.7~3.2%；Cr：11~12.5%；Mo：2.5~2.9%；V：0.7~1.8%；W：2.2~3.6%；B：0.7~ 1.1%；Remaining is iron.The advantages of invention is：The present invention can ensure the flat smooth of wear-resisting plate surface, but wear-resistant alloy layer C and Cr content it is all relatively low, influence the anti-wear performance of wearing plate.
Chinese patent application 201510274219.5 disclose the chemical composition of V-Ti semi-autogenous mill abrasion-proof backing block by Percentage by weight is respectively：0.48%≤C≤0.65%, 0.10%≤Si≤0.85%, 0.10%≤Mn≤0.85%, S ＜ 0.05%th, P ＜ 0.05%, 0.30%≤Mo≤1.0%, 1.0%≤Cr≤5.5%, 0.50%≤Ni≤1.0%, 0.10% ≤ V≤0.45%, 0.1.%≤Ti≤0.45%, remaining be Fe.This application is rationally added by reducing the phosphorus content of liner plate Refinement and the alloying element of impact resistance, the ability of shock resistance and the abrasion of liner plate is set to reach optimal balance point.But liner plate Hardness and abrasive capacity are relatively low.
Mainly obtained in the preparation process of traditional high-abrasive material by quenching and low-temperature tempering heat treatment mode, but in height The hardness of high-abrasive material, which has, during temperature processing declines to a great extent, and then reduces the wearability of material, influences the use of material Life-span.
Chinese patent application 201410301934.9 discloses a kind of middle chromium abrasion-proof backing block, belongs to abrasion-proof backing block technology neck Domain, each composition and its percentage by weight are：C：0.65-0.8%, Mn：0.6-0.8%, Si：0.6-0.8%, Cr：5.6- 6.2%th, Mo：0.6-0.7%, B：0.03-0.05%, Cu：≤ 0.2%, P：≤ 0.01%, Re：0.02-0.1%；Surplus is Fe.The abrasion-proof backing block of this application is obtained by quenching and low-temperature tempering heat treatment mode, the wear-resisting material during high-temperature process The hardness of material can decline, and then influence the anti-wear performance of material.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of smooth high rigidity in surface Wear-Resistant Compound Steel Plate and preparation method thereof.
The technical scheme is that：High hardness wear-resisting clad steel plate, including substrate and resistance to positioned at the alloy of substrate surface Layer is ground, the alloy wear-resisting layer includes the component of following weight percentage：
C 5-12%,
Cr 25-42%,
Si 0.15-1.5%,
Mn 0.3-1.0%,
Co 0.5-1%,
V 1.0-1.5%,
Mo 0.8-1.3%,
Y 0.6-0.8%,
W 1.2-2.0%,
Fe surpluses.
Further, C weight percentage is 5-7% in the alloy wear-resisting layer.
Further, Cr weight percentage is 25-32% in the alloy wear-resisting layer.
Further, Si weight percentage is 0.15-0.7% in the alloy wear-resisting layer.
Further, the weight percentage of the alloy wear-resisting layer Mn is 0.6-1.0%.
Further, the weight percentage of the alloy wear-resisting layer Co is 0.5-0.65%.
Further, the weight percentage of the alloy wear-resisting layer W is 1.2-1.5%.
Further, the alloy wear-resisting layer includes the component of following weight percentage：
C 6%,
Cr 26%,
Si 0.4%,
Mn 0.8%,
Co 0.7%,
V 1.3%,
Mo 1.2%,
Y 0.7%,
W 1.4%,
Fe surpluses.
Further, the substrate is one kind in mild steel and stainless steel.
Further, the alloy wear-resisting layer cladding is in being metallurgical junction on the substrate, between alloy wear-resisting layer and substrate Close.
The preparation method of high hardness wear-resisting clad steel plate, comprises the following steps：
（1）Substrate derusts；
（2）The each component of alloy wear-resisting layer is taken, ball milling, crosses 200-280 mesh sieves, adds in batch mixer and is well mixed, obtain mixed Close powder materials；
（3）Binding agent is added into mixed-powder material, is stirred with 60-80r/min speed, obtains compound；
（4）3-6h is dried at a temperature of compound is placed in into 40-50 DEG C, 1-1.5h is dried at a temperature of 160-175 DEG C, must close Bronze block；
（5）By alloy powder block cladding on the substrate after derusting；
（6）Shaping is smoothed, obtains high hardness wear-resisting clad steel plate.
Further, the binding agent accounts for the 7-11wt% of the mixed-powder material.
Further, the binding agent is polytetrafluoroethylene (PTFE) and waterglass, and the mass ratio of the two is 1：3-4.
Further, the method for the deposition is high-frequency induction, plasma arc or tungsten argon arc.
Due to the addition of the alloying elements such as cobalt, vanadium and molybdenum in alloy wear-resisting layer of the present invention, and its content is rationally controlled, thus 1000 DEG C of high temperature wear can be withstood up to.
Due to the crome metal containing high percentage in the alloy wear-resisting layer of the present invention, Cr in its metallographic structure27C5Carbide Volume fraction reach more than 50%, hardness is uniform up and down for alloy wear-resisting layer, and wearability is good.Simultaneously as contain high percentage Crome metal, also there is certain antirust and corrosion resistance in clad steel plate.
The substrate of the present invention and alloy wear-resisting layer are metallurgical binding, it is not necessary to worry the problem of alloy wear-resisting layer comes off, therefore The clad steel plate of the present invention has good impact resistance.
The surface smooth degree of wear-resistant composite board influences the uniformity of the wearability of clad steel plate, while can also influence compound The frictional resistance of steel plate, and then influence the life-span of clad steel plate.The high hardness wear-resisting clad steel plate of the present invention passes through optimized alloy Each component and its content in wearing layer, the interphase interaction of each element, while the addition of binding agent in preparation process is controlled, select With the compound binding agent of polytetrafluoroethylene (PTFE) and waterglass composition and its proportioning is controlled, improves what each component in alloy wear-resisting layer disperseed Uniformity.Obtained clad steel plate has that surface is smooth, wearability is good, wear-resisting area top layer and bottom hardness are close, makes The characteristics of with long lifespan, and possess good metallurgical binding intensity, impact resistance, high temperature resistant and decay resistance.
Embodiment
Embodiment 1
High hardness wear-resisting clad steel plate, including substrate and the alloy wear-resisting layer positioned at substrate surface, the alloy wear-resisting layer Include the component of following weight percentage：
C 6%,
Cr 26%,
Si 0.4%,
Mn 0.8%,
Co 0.7%,
V 1.3%,
Mo 1.2%,
Y 0.7%,
W 1.4%,
Fe surpluses.
Wherein, substrate is mild steel.Alloy wear-resisting layer cladding is in being smelting on the substrate, between alloy wear-resisting layer and substrate Gold combines.
The preparation method of high hardness wear-resisting clad steel plate, comprises the following steps：
（1）Substrate derusts；
（2）The each component of alloy wear-resisting layer is taken, ball milling, crosses 250 mesh sieves, adds in batch mixer and is well mixed, obtain mixed powder End material；
（3）Binding agent is added into mixed-powder material, is stirred with 75r/min speed, obtains compound；
（4）Compound is placed at a temperature of 45 DEG C and dries 4h, 1.2h is dried at a temperature of 165 DEG C, obtains alloy powder block；
（5）By alloy powder block cladding on the substrate after derusting；
（6）Shaping is smoothed, obtains high hardness wear-resisting clad steel plate.
Wherein, binding agent is polytetrafluoroethylene (PTFE) and waterglass, and the mass ratio of the two is 1：4, binding agent accounts for the mixed powder The 9wt% of end material.
The method of deposition is high-frequency induction.
Embodiment 2
High hardness wear-resisting clad steel plate, including substrate and the alloy wear-resisting layer positioned at substrate surface, the alloy wear-resisting layer Include the component of following weight percentage：
C 7%,
Cr 32%,
Si 0.7%,
Mn 0.6%,
Co 0.65%,
V 1.2%,
Mo 1.0%,
Y 0.7%,
W 1.5%,
Fe surpluses.
Wherein, substrate is stainless steel.Alloy wear-resisting layer cladding is in being smelting on the substrate, between alloy wear-resisting layer and substrate Gold combines.
The preparation method of high hardness wear-resisting clad steel plate, comprises the following steps：
（1）Substrate derusts；
（2）The each component of alloy wear-resisting layer is taken, ball milling, crosses 270 mesh sieves, adds in batch mixer and is well mixed, obtain mixed powder End material；
（3）Binding agent is added into mixed-powder material, is stirred with 70r/min speed, obtains compound；
（4）Compound is placed at a temperature of 40 DEG C and dries 5h, 1.1h is dried at a temperature of 170 DEG C, obtains alloy powder block；
（5）By alloy powder block cladding on the substrate after derusting；
（6）Shaping is smoothed, obtains high hardness wear-resisting clad steel plate.
Wherein, binding agent is polytetrafluoroethylene (PTFE) and waterglass, and the mass ratio of the two is 1：3, binding agent accounts for the mixed powder The 8wt% of end material.
The method of deposition is plasma arc.
Embodiment 3
High hardness wear-resisting clad steel plate, including substrate and the alloy wear-resisting layer positioned at substrate surface, the alloy wear-resisting layer Include the component of following weight percentage：
C 5%,
Cr 25%,
Si 0.15%,
Mn 0.3%,
Co 0.5%,
V 1.0%,
Mo 0.8%,
Y 0.6%,
W 1.2%,
Fe surpluses.
Wherein, substrate is mild steel.Alloy wear-resisting layer cladding is in being smelting on the substrate, between alloy wear-resisting layer and substrate Gold combines.
The preparation method of high hardness wear-resisting clad steel plate, comprises the following steps：
（1）Substrate derusts；
（2）The each component of alloy wear-resisting layer is taken, ball milling, crosses 200 mesh sieves, adds in batch mixer and is well mixed, obtain mixed powder End material；
（3）Binding agent is added into mixed-powder material, is stirred with 60r/min speed, obtains compound；
（4）Compound is placed at a temperature of 40 DEG C and dries 6h, 1h is dried at a temperature of 175 DEG C, obtains alloy powder block；
（5）By alloy powder block cladding on the substrate after derusting；
（6）Shaping is smoothed, obtains high hardness wear-resisting clad steel plate.
Wherein, binding agent is polytetrafluoroethylene (PTFE) and waterglass, and the mass ratio of the two is 1：3, binding agent accounts for the mixed powder The 7wt% of end material.
The method of deposition is tungsten argon arc.
Embodiment 4
High hardness wear-resisting clad steel plate, including substrate and the alloy wear-resisting layer positioned at substrate surface, the alloy wear-resisting layer Include the component of following weight percentage：
C 12%,
Cr 42%,
Si 1.5%,
Mn 1.0%,
Co 1%,
V 1.5%,
Mo 1.3%,
Y 0.8%,
W 2.0%,
Fe surpluses.
Wherein, substrate is stainless steel.Alloy wear-resisting layer cladding is in being smelting on the substrate, between alloy wear-resisting layer and substrate Gold combines.
The preparation method of high hardness wear-resisting clad steel plate, comprises the following steps：
（1）Substrate derusts；
（2）The each component of alloy wear-resisting layer is taken, ball milling, crosses 280 mesh sieves, adds in batch mixer and is well mixed, obtain mixed powder End material；
（3）Binding agent is added into mixed-powder material, is stirred with 80r/min speed, obtains compound；
（4）Compound is placed at a temperature of 50 DEG C and dries 3h, 1.5h is dried at a temperature of 160 DEG C, obtains alloy powder block；
（5）By alloy powder block cladding on the substrate after derusting；
（6）Shaping is smoothed, obtains high hardness wear-resisting clad steel plate.
Wherein, binding agent is polytetrafluoroethylene (PTFE) and waterglass, and the mass ratio of the two is 1：4, binding agent accounts for the mixed powder The 11wt% of end material.
The method of deposition is high-frequency induction.
Embodiment 5
High hardness wear-resisting clad steel plate, including substrate and the alloy wear-resisting layer positioned at substrate surface, the alloy wear-resisting layer Include the component of following weight percentage：
C 6%,
Cr 20%,
Si 0.4%,
Mn 0.8%,
Co 0.7%,
V 1.3%,
Mo 1.2%,
Y 0.7%,
W 1.4%,
Fe surpluses.
Wherein, substrate is mild steel.Alloy wear-resisting layer cladding is in being smelting on the substrate, between alloy wear-resisting layer and substrate Gold combines.
The preparation method of high hardness wear-resisting clad steel plate, comprises the following steps：
（1）Substrate derusts；
（2）The each component of alloy wear-resisting layer is taken, ball milling, crosses 250 mesh sieves, adds in batch mixer and is well mixed, obtain mixed powder End material；
（3）Binding agent is added into mixed-powder material, is stirred with 75r/min speed, obtains compound；
（4）Compound is placed at a temperature of 45 DEG C and dries 4h, 1.2h is dried at a temperature of 165 DEG C, obtains alloy powder block；
（5）By alloy powder block cladding on the substrate after derusting；
（6）Shaping is smoothed, obtains high hardness wear-resisting clad steel plate.
Wherein, binding agent is polytetrafluoroethylene (PTFE) and waterglass, and the mass ratio of the two is 1：4, binding agent accounts for the mixed powder The 9wt% of end material.
The method of deposition is high-frequency induction.
Embodiment 6
High hardness wear-resisting clad steel plate, including substrate and the alloy wear-resisting layer positioned at substrate surface, the alloy wear-resisting layer Include the component of following weight percentage：
C 6%,
Cr 26%,
Si 0.4%,
Mn 0.8%,
Co 1.3%,
V 0.8%,
The % of Mo 0.5,
Y 0.7%,
W 1.4%,
Fe surpluses.
Wherein, substrate is mild steel.Alloy wear-resisting layer cladding is in being smelting on the substrate, between alloy wear-resisting layer and substrate Gold combines.
The preparation method of high hardness wear-resisting clad steel plate, comprises the following steps：
（1）Substrate derusts；
（2）The each component of alloy wear-resisting layer is taken, ball milling, crosses 250 mesh sieves, adds in batch mixer and is well mixed, obtain mixed powder End material；
（3）Binding agent is added into mixed-powder material, is stirred with 75r/min speed, obtains compound；
（4）Compound is placed at a temperature of 45 DEG C and dries 4h, 1.2h is dried at a temperature of 165 DEG C, obtains alloy powder block；
（5）By alloy powder block cladding on the substrate after derusting；
（6）Shaping is smoothed, obtains high hardness wear-resisting clad steel plate.
Wherein, binding agent is polytetrafluoroethylene (PTFE) and waterglass, and the mass ratio of the two is 1：4, binding agent accounts for the mixed powder The 9wt% of end material.
The method of deposition is high-frequency induction.
Performance test is carried out to the compound just plate prepared by embodiment 1-6, test result is listed in Table 1 below.
Table 1
There is excellent mechanical property by the clad steel plate prepared by the present invention it can be seen from the data in table 1, have compared with High hardness, intensity and good toughness.The clad steel plate of the present invention has more preferable on the premise of with excellent wearability Impact flexibility.In embodiment 5 when alloy wear-resisting layer chromium content drops to 20wt%, the hardness of clad steel plate substantially reduces, and says The performance of clad steel plate prepared by the bright present invention is had a great influence by alloy wear-resisting layer chromium content.When alloy is resistance in embodiment 6 When the content of mill layer cobalt, vanadium and molybdenum changes, the hardness and tensile strength of clad steel plate have obvious reduction, explanation The content of alloy wear-resisting layer cobalt, vanadium and molybdenum has more important influence to the wearability of clad steel plate.
High hardness wear-resisting clad steel plate provided above the embodiment of the present invention and preparation method thereof, detailed Jie is carried out Continue, specific case used herein is set forth to the principle and embodiment of the present invention, and the explanation of above example is only It is the method and its core concept for being used to help understand the present invention；Meanwhile for those of ordinary skill in the art, according to this hair Bright thought, there will be changes in specific embodiments and applications, in summary, this specification content should not manage Solve as limitation of the present invention.

Claims (1)

1. high hardness wear-resisting clad steel plate, including substrate and the alloy wear-resisting layer positioned at substrate surface, it is characterised in that the conjunction Golden wearing layer includes the component of following weight percentage：
C 12%,
Cr 42%,
Si 1.5%,
Mn 1.0%,
Co 1%,
V 1.5%,
Mo 1.3%,
Y 0.8%,
W 2.0%,
Fe surpluses；
Wherein, substrate is stainless steel；Alloy wear-resisting layer cladding is in being metallurgical junction on the substrate, between alloy wear-resisting layer and substrate Close；
The high hardness wear-resisting clad steel plate is prepared in following methods, the described method comprises the following steps：
（1）Substrate derusts；
（2）The each component of alloy wear-resisting layer is taken, ball milling, crosses 280 mesh sieves, adds in batch mixer and is well mixed, obtain mixed-powder material；
（3）Binding agent is added into mixed-powder material, is stirred with 80r/min speed, obtains compound；
（4）Compound is placed at a temperature of 50 DEG C and dries 3h, 1.5h is dried at a temperature of 160 DEG C, obtains alloy powder block；
（5）By alloy powder block cladding on the substrate after derusting；
（6）Shaping is smoothed, obtains high hardness wear-resisting clad steel plate；
Wherein, binding agent is polytetrafluoroethylene (PTFE) and waterglass, and the mass ratio of the two is 1：4, binding agent accounts for the mixed-powder material 11wt%；
The method of deposition is high-frequency induction.
CN201611252087.7A 2016-12-30 2016-12-30 High hardness wear-resisting clad steel plate and preparation method thereof Expired - Fee Related CN106521300B (en)

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CN108788388A (en) * 2017-05-03 2018-11-13 北京中煤大田耐磨材料有限公司 A kind of technique that built-up welding makes high-performance abrasion-proof plate
CN109082579B (en) * 2018-08-13 2020-04-17 天津沃盾耐磨材料有限公司 Impact-resistant wear-resistant composite steel plate
CN109018747A (en) * 2018-09-29 2018-12-18 山西沁新能源集团股份有限公司 A kind of moulded coal coal bin
CN110103528A (en) * 2019-05-16 2019-08-09 肖仁德 Non-magnetic rustproof steel composite board and preparation method thereof
CN112342341A (en) * 2020-10-23 2021-02-09 湖北恩腾机械有限公司 Casting process of wear-resistant alloy sheet embedded in metal bent pipe
CN113182729B (en) * 2021-04-19 2022-09-30 湖南沃盾新材料有限公司 Powder capable of increasing weld mark strength of wear-resisting plate and preparation method thereof
CN115558843A (en) * 2021-09-08 2023-01-03 僖昴晰(上海)新材料有限公司 Alloy steel composition

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CN100519804C (en) * 2007-12-04 2009-07-29 北京工业大学 High chromium abrasion-proof cast iron abrasive disc and manufacturing method thereof
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