CN112973882A - Metal ceramic composite steel slag grinding roller and manufacturing method thereof - Google Patents
Metal ceramic composite steel slag grinding roller and manufacturing method thereof Download PDFInfo
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- CN112973882A CN112973882A CN202110175049.0A CN202110175049A CN112973882A CN 112973882 A CN112973882 A CN 112973882A CN 202110175049 A CN202110175049 A CN 202110175049A CN 112973882 A CN112973882 A CN 112973882A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 93
- 239000002184 metal Substances 0.000 title claims abstract description 93
- 239000002131 composite material Substances 0.000 title claims abstract description 74
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 67
- 239000010959 steel Substances 0.000 title claims abstract description 67
- 239000002893 slag Substances 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000002245 particle Substances 0.000 claims description 38
- 239000000843 powder Substances 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
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- 238000000576 coating method Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
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- 238000003723 Smelting Methods 0.000 claims description 7
- 229910001018 Cast iron Inorganic materials 0.000 claims description 6
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
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- 238000003754 machining Methods 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000617 Mangalloy Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
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- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
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- 238000011049 filling Methods 0.000 claims description 3
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- 239000000377 silicon dioxide Substances 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
- B22D23/04—Casting by dipping
-
- 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
- B22F3/11—Making porous workpieces or articles
- B22F3/1103—Making porous workpieces or articles with particular physical characteristics
- B22F3/1115—Making porous workpieces or articles with particular physical characteristics comprising complex forms, e.g. honeycombs
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a metal ceramic composite steel slag grinding roller and a manufacturing method thereof, wherein the metal ceramic composite steel slag grinding roller comprises a grinding roller base body and a grinding roller wear-resistant body, and further comprises a honeycomb-shaped metal ceramic composite prefabricated part arranged on the surface of the grinding roller wear-resistant layer, the grinding roller wear-resistant body is sleeved on the grinding roller base body, one end of the grinding roller wear-resistant body is fixedly positioned through a step of the grinding roller base body, and the other end of the grinding roller wear-resistant body is fixedly connected with the end face of the grinding roller base body through pre; has the advantages of low cost, long service life and the like.
Description
Technical Field
The invention relates to the field of manufacturing of metal ceramic grinding rollers, in particular to a metal ceramic composite steel slag grinding roller and a manufacturing method thereof.
Background
China is a big country for steel production, the steel industry is the prop industry of China, and the discharge amount of steel slag continuously increases along with the continuous increase of the steel yield of China. The steel slag is industrial solid waste generated in the steel smelting process, and the discharge amount of the steel slag is about 15 to 20 weight percent of the yield of crude steel. According to the relevant data issued by the authorities, the yield of crude steel reaches 10.53 hundred million tons in 2020 year of China, which means that the annual steel slag discharge amount is up to 1.58 million tons, while the utilization rate of the steel slag in China is only about 25 percent, and the comprehensive utilization rate of the steel slag in developed countries, America, Japan, Germany and the like is nearly 100 percent. A large amount of untreated steel slag is piled up like a mountain, which not only occupies a field, but also seriously pollutes the environment.
In the aspect of steel slag recycling, cement production is an important application of steel slag. The steel slag contains a large amount of mineral substances such as calcium oxide, silicon oxide, iron oxide and the like, and is easy to abrade, so that the yield of the steel slag micro powder is influenced.
At present, the steel slag grinding roller is generally used for grinding steel slag and is a core component of a vertical mill, the types of the grinding roller mainly comprise HRM, TRM, ATOX, UBE and the like, the steel slag grinding roller is generally made of surfacing wear-resistant materials, the service life is only about 2000 hours, a wear area is generally close to one end, the length of the wear area is about 1/2 of the roller surface, after the use time exceeds 2000 hours, the powder yield is reduced by more than 20%, the yield is sharply reduced, the power consumption is increased, and the production benefit of enterprises is seriously influenced. The steel slag grinding roller made of the surfacing wear-resistant material is used for surfacing 3-4 times a year, the surfacing period is about 7 days, and the grinding yield is severely limited.
In order to prolong the service life of the steel slag mill, some domestic manufacturers try the metal ceramic composite material mill rolls, the service life is prolonged to about 2 times of the original service life, the mill rolls cannot be repaired after being used, and the repeated purchase cost is too high. Especially for the toper grinding roller, can not the turn-ups use, use the metal ceramic composite grinding roller cost performance lower.
The invention provides a metal ceramic composite steel slag grinding roller and a manufacturing method thereof, which solve the problems.
Disclosure of Invention
The invention aims to solve the technical problems that the service life of the existing grinding roller is short, and the abrasion loss is large, so that the invention provides a metal ceramic composite steel slag grinding roller and a manufacturing method thereof, wherein the metal ceramic composite steel slag grinding roller comprises the following components:
the grinding roller wear-resistant structure comprises a grinding roller base body, a grinding roller wear-resistant body and a honeycomb-shaped metal ceramic composite prefabricated part arranged on the surface of the grinding roller wear-resistant layer, wherein the grinding roller wear-resistant body is sleeved on the grinding roller base body, one end of the grinding roller wear-resistant body is fixedly positioned through a step of the grinding roller base body, and the other end of the grinding roller wear-resistant body is fixedly connected with the end face of the grinding roller base body through.
Furthermore, the grinding roller wear-resistant body is in interference fit with the grinding roller base body, the length of the grinding roller wear-resistant body accounts for 1/3-1/2 of the total length of the metal ceramic composite steel slag grinding roller, and the thickness of the grinding roller wear-resistant body accounts for 1/2-3/5 of the total thickness of the metal ceramic composite steel slag grinding roller.
Further, the width of each block of the honeycomb metal ceramic composite prefabricated member is 90-130 mm; the honeycomb metal ceramic composite prefabricated part and the grinding roller wear-resistant body are formed by metal casting at one time.
In another aspect, the present invention also provides a method for manufacturing a grinding roller for a metal ceramic composite steel slag, the method for manufacturing the grinding roller for a metal ceramic composite steel slag comprising:
s1, carrying out surface coating pretreatment on ceramic particles with the particle size of 10-18 meshes;
s2, uniformly mixing the ceramic particles and a binder in proportion to obtain a first mixture, wherein the mass of the binder is 2-6% of that of the ceramic particles;
s3, adding a certain proportion of metal powder into the first mixture and uniformly mixing to obtain a particle mixture, wherein the particle size of the metal powder is 200-300 meshes, and the mass of the added metal powder is 1-3% of the mass of the mixture;
s4, uniformly filling the particle mixture in the step (A) into a mould, compacting, putting the whole mould into a drying oven at 50-80 ℃ for drying for 48-72 hours, taking out of the drying oven, and demoulding to obtain a honeycomb-shaped metal ceramic composite prefabricated part;
s5, sequentially assembling and fixing the pre-embedded chill and the honeycomb metal ceramic composite prefabricated part on the end surface and the working surface of the grinding roller wear-resistant body casting cavity, smelting and pouring molten metal of the grinding roller wear-resistant body to obtain a metal ceramic composite steel slag grinding roller wear-resistant body with a honeycomb metal ceramic composite material compounded on the surface;
s6, quenching and tempering the wear-resistant body to ensure that the working surface hardness reaches 58-62 HRC;
s7, smelting and pouring the metal melt of the grinding roller substrate to obtain the metal ceramic composite steel slag grinding roller substrate;
s8, respectively machining the grinding roller wear-resistant body and the grinding roller base body assembly surface, then sleeving the wear-resistant body at the outer end of the grinding roller base body in a heating state, wherein one end of the wear-resistant body is positioned and fixed through the grinding roller base body step, and the other end of the wear-resistant body is welded and fixed with the grinding roller base body end surface to obtain the metal ceramic composite steel slag grinding roller.
Further, the ceramic particles are one of alumina, zirconia toughened alumina or carbide ceramics.
Further, the surface coating pretreatment of the ceramic particles with the particle size of 10-18 meshes comprises the following steps:
coating the surface of ceramic particles with the grain diameter of 10-18 meshes with SiO2Powder, TiO2Powder or B4And C, powder.
Further, the binder is one or a combination of any several of silica sol, water glass, aluminum sol and phenolic resin.
Further, the metal powder material is one of an iron-based self-fluxing alloy, a nickel-based self-fluxing alloy or a cobalt-based self-fluxing alloy.
Furthermore, the grinding roller wear-resistant body is made of one of high-chromium cast iron, nickel hard cast iron or high-manganese steel, and the grinding roller substrate is made of carbon steel.
Further, the hole pattern of the honeycomb metal ceramic composite prefabricated part is hexagonal or circular, the thickness of the honeycomb metal ceramic composite prefabricated part is 20-40mm, and the ratio of the rib thickness to the hole diameter of the honeycomb metal ceramic composite prefabricated part is 1: 0.8.
the implementation of the invention has the following beneficial effects:
1. after the surface of the steel slag grinding roller is worn, the grinding roller wear-resistant body can be taken down by cutting and polishing a welding line, a tool is used and heating expansion is carried out, then a new wear-resistant body is replaced, the grinding roller base body can be reused, and the repairability of the metal ceramic composite steel slag grinding roller is realized.
2. The steel slag grinding roller substrate of the invention adopts common carbon steel, has low hardness and easy processing, and greatly reduces the processing cost of the machine.
3. The surfaces of the particles are subjected to coating pretreatment, so that the interface forms good wettability, and meanwhile, a small amount of low-melting-point self-fluxing alloy powder is added into the mixture of the particles and the binder, so that a casting infiltration channel can be formed, metallurgical bonding between the metal of the cast wear-resistant body and the ceramic particles is facilitated, and the particles are prevented from falling off;
4. compared with the prior surfacing wear-resistant steel slag grinding roller, the service life of the surfacing wear-resistant steel slag grinding roller is 2-3 times of that of the prior surfacing wear-resistant steel slag grinding roller due to the high hardness and high wear resistance of the ceramic particles, and compared with the metal ceramic composite steel slag grinding roller, the surfacing wear-resistant steel slag grinding roller also has repairability and greatly reduces purchase and production costs.
Drawings
FIG. 1 is a front view of the metal ceramic composite steel slag grinding roller of the present invention;
FIG. 2 is a top view of the cermet composite slag grinding roller of the present invention;
FIG. 3 is a front elevational view of the grinding roll substrate of the present invention;
FIG. 4 is a front elevational view of the abrasive resistant body of the grinding roll of the present invention;
FIG. 5 is a schematic structural view of a honeycomb-shaped cermet composite wear part according to the present invention;
fig. 6 is a flow chart of the present invention.
Wherein the reference signs shall correspond to: 1-grinding roller wear-resistant body, 2-honeycomb metal ceramic composite prefabricated part, 3-grinding roller base body and 4-embedded part.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to the attached drawings 1-6 of the specification, the technical problem to be solved in this embodiment is to provide a metal ceramic composite steel slag grinding roller and a manufacturing method thereof, wherein the metal ceramic composite steel slag grinding roller comprises:
the grinding roller wear-resistant structure comprises a grinding roller base body, a grinding roller wear-resistant body and a honeycomb-shaped metal ceramic composite prefabricated part arranged on the surface of a grinding roller wear-resistant layer, wherein the grinding roller wear-resistant body is sleeved on the grinding roller base body, one end of the grinding roller wear-resistant body is fixedly positioned through a step of the grinding roller base body, and the other end of the grinding roller wear-resistant body is fixedly connected with the end face of the grinding.
The grinding roller wear-resistant body is in interference fit with the grinding roller base body, the length of the grinding roller wear-resistant body accounts for 1/3-1/2 of the total length of the metal ceramic composite steel slag grinding roller, and the thickness of the grinding roller wear-resistant body accounts for 1/2-3/5 of the total thickness of the metal ceramic composite steel slag grinding roller.
The width of each block of the honeycomb metal ceramic composite prefabricated part is 90-130 mm; the honeycomb metal ceramic composite prefabricated part and the grinding roller wear-resistant body are formed by metal one-time casting.
On the other hand, the embodiment also provides a manufacturing method for the metal ceramic composite steel slag grinding roller, and the manufacturing method for the metal ceramic composite steel slag grinding roller comprises the following steps:
s1, carrying out surface coating pretreatment on ceramic particles with the particle size of 10-18 meshes;
s2, uniformly mixing the ceramic particles and a binder in proportion to obtain a first mixture, wherein the mass of the binder is 2-6% of that of the ceramic particles;
s3, adding a certain proportion of metal powder into the first mixture and uniformly mixing to obtain a particle mixture, wherein the particle size of the metal powder is 200-300 meshes, and the mass of the added metal powder is 1-3% of the mass of the mixture;
s4, uniformly filling the particle mixture in the step (A) into a mould, compacting, putting the whole mould into a drying oven at 50-80 ℃ for drying for 48-72 hours, taking out of the drying oven, and demoulding to obtain a honeycomb-shaped metal ceramic composite prefabricated part;
s5, sequentially assembling and fixing the pre-embedded chill and the honeycomb metal ceramic composite prefabricated part on the end surface and the working surface of the grinding roller wear-resistant body casting cavity, smelting and pouring molten metal of the grinding roller wear-resistant body to obtain a metal ceramic composite steel slag grinding roller wear-resistant body with a honeycomb metal ceramic composite material compounded on the surface;
s6, quenching and tempering the wear-resistant body to ensure that the working surface hardness reaches 58-62 HRC;
s7, smelting and pouring the metal melt of the grinding roller substrate to obtain the metal ceramic composite steel slag grinding roller substrate;
s8, respectively machining the grinding roller wear-resistant body and the grinding roller base body assembly surface, then sleeving the wear-resistant body at the outer end of the grinding roller base body in a heating state, wherein one end of the wear-resistant body is positioned and fixed through the grinding roller base body step, and the other end of the wear-resistant body is welded and fixed with the grinding roller base body end surface to obtain the metal ceramic composite steel slag grinding roller.
The ceramic particles are one of alumina, zirconia toughened alumina or carbide ceramics.
The surface coating pretreatment of the ceramic particles with the particle size of 10-18 meshes comprises the following steps:
coating the surface of ceramic particles with the grain diameter of 10-18 meshes with SiO2Powder, TiO2Powder or B4And C, powder.
The binder is one or the combination of any more of silica sol, water glass, aluminum sol and phenolic resin.
The metal powder material is one of iron-based self-fluxing alloy, nickel-based self-fluxing alloy or cobalt-based self-fluxing alloy.
The grinding roller wear-resistant body is made of one of high-chromium cast iron, nickel hard cast iron or high-manganese steel, and the grinding roller substrate is made of carbon steel.
The hole pattern of the honeycomb metal ceramic composite prefabricated part is hexagonal or circular, the thickness of the honeycomb metal ceramic composite prefabricated part is 20-40mm, and the ratio of the rib thickness to the hole diameter of the honeycomb metal ceramic composite prefabricated part is 1: 0.8.
the grinding roller wear-resistant body of the grinding roller is replaceable, the grinding roller base body can be reused, the grinding roller wear-resistant body is sleeved at the outer end of the grinding roller base body, one end of the wear-resistant body is fixed by the base body step, and the other end of the wear-resistant body is welded and fixed with the base body end face by the pre-buried chill, so that the tapping slag grinding roller is manufactured.
After the steel slag grinding roller is worn in use, the replacement process is as follows:
(1) grinding and cutting the welding part, separating the grinding roller wear-resistant body from the grinding roller substrate, and taking down the grinding roller wear-resistant body;
(2) preparing a new grinding roller wear-resistant body, and after quenching, tempering heat treatment and machining, sleeving and fixing the wear-resistant body and the used grinding roller base body again to prepare a new metal ceramic composite steel slag grinding roller;
(3) only the abrasion-resistant area of the grinding roller is replaced, so that the grinding roller can be repaired, the service life of the grinding roller is consistent with that of the whole metal ceramic composite material of the roller surface, and the production and purchase costs are saved.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The metal ceramic composite steel slag grinding roller is characterized by comprising the following components:
the grinding roller wear-resistant structure comprises a grinding roller base body, a grinding roller wear-resistant body and a honeycomb-shaped metal ceramic composite prefabricated part arranged on the surface of the grinding roller wear-resistant layer, wherein the grinding roller wear-resistant body is sleeved on the grinding roller base body, one end of the grinding roller wear-resistant body is fixedly positioned through a step of the grinding roller base body, and the other end of the grinding roller wear-resistant body is fixedly connected with the end face of the grinding roller base body through.
2. The metal ceramic composite steel slag grinding roller as claimed in claim 1, wherein the grinding roller wear-resistant body is in interference fit with the grinding roller base body, the length of the grinding roller wear-resistant body accounts for 1/3-1/2 of the total length of the metal ceramic composite steel slag grinding roller, and the thickness of the grinding roller wear-resistant body accounts for 1/2-3/5 of the total thickness of the metal ceramic composite steel slag grinding roller.
3. The metal ceramic composite steel slag grinding roller as claimed in claim 2, wherein the width of each honeycomb-shaped metal ceramic composite prefabricated member is 90-130 mm; the honeycomb metal ceramic composite prefabricated part and the grinding roller wear-resistant body are formed by metal casting at one time.
4. The manufacturing method of the metal ceramic composite steel slag grinding roller is characterized by comprising the following steps of:
s1, carrying out surface coating pretreatment on ceramic particles with the particle size of 10-18 meshes;
s2, uniformly mixing the ceramic particles and a binder in proportion to obtain a first mixture, wherein the mass of the binder is 2-6% of that of the ceramic particles;
s3, adding a certain proportion of metal powder into the first mixture and uniformly mixing to obtain a particle mixture, wherein the particle size of the metal powder is 200-300 meshes, and the mass of the added metal powder is 1-3% of the mass of the mixture;
s4, uniformly filling the particle mixture in the step (A) into a mould, compacting, putting the whole mould into a drying oven at 50-80 ℃ for drying for 48-72 hours, taking out of the drying oven, and demoulding to obtain a honeycomb-shaped metal ceramic composite prefabricated part;
s5, sequentially assembling and fixing the pre-embedded chill and the honeycomb metal ceramic composite prefabricated part on the end surface and the working surface of the grinding roller wear-resistant body casting cavity, smelting and pouring molten metal of the grinding roller wear-resistant body to obtain a metal ceramic composite steel slag grinding roller wear-resistant body with a honeycomb metal ceramic composite material compounded on the surface;
s6, quenching and tempering the wear-resistant body to ensure that the working surface hardness reaches 58-62 HRC;
s7, smelting and pouring the metal melt of the grinding roller substrate to obtain the metal ceramic composite steel slag grinding roller substrate;
s8, respectively machining the grinding roller wear-resistant body and the grinding roller base body assembly surface, then sleeving the wear-resistant body at the outer end of the grinding roller base body in a heating state, wherein one end of the wear-resistant body is positioned and fixed through the grinding roller base body step, and the other end of the wear-resistant body is welded and fixed with the grinding roller base body end surface to obtain the metal ceramic composite steel slag grinding roller.
5. The method as claimed in claim 4, wherein the ceramic particles are one of alumina, zirconia toughened alumina or carbide ceramic.
6. The method for manufacturing the metal ceramic composite steel slag grinding roller according to claim 5, wherein the surface coating pretreatment of the ceramic particles with the particle size of 10-18 meshes is as follows:
coating the surface of ceramic particles with the grain diameter of 10-18 meshes with SiO2Powder, TiO2Powder or B4And C, powder.
7. The method for manufacturing the metal ceramic composite steel slag grinding roller according to claim 6, wherein the binder is one or a combination of any several of silica sol, water glass, aluminum sol and phenolic resin.
8. The method as claimed in claim 7, wherein the metal powder is one of an iron-based self-fluxing alloy, a nickel-based self-fluxing alloy and a cobalt-based self-fluxing alloy.
9. The method as claimed in claim 8, wherein the material of the wear-resistant body of the grinding roller is one of high-chromium cast iron, nickel hard cast iron and high-manganese steel, and the material of the base body of the grinding roller is carbon steel.
10. The manufacturing method of the metal ceramic composite steel slag grinding roller according to claim 9, wherein the hole patterns of the honeycomb metal ceramic composite prefabricated member are hexagonal or circular, the thickness of the honeycomb metal ceramic composite prefabricated member is 20-40mm, and the ratio of the rib thickness to the hole diameter of the honeycomb metal ceramic composite prefabricated member is 1: 0.8.
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