CN104399930A - Method for centrifugally casting vertical mill roller made of ceramic-metal honeycomb composite materials - Google Patents
Method for centrifugally casting vertical mill roller made of ceramic-metal honeycomb composite materials Download PDFInfo
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- CN104399930A CN104399930A CN201410610902.7A CN201410610902A CN104399930A CN 104399930 A CN104399930 A CN 104399930A CN 201410610902 A CN201410610902 A CN 201410610902A CN 104399930 A CN104399930 A CN 104399930A
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- grinding roller
- vertical mill
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 81
- 239000002184 metal Substances 0.000 title claims abstract description 80
- 239000002131 composite material Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000005266 casting Methods 0.000 title claims abstract description 25
- 239000000919 ceramic Substances 0.000 claims abstract description 120
- 239000002245 particle Substances 0.000 claims abstract description 100
- 238000009750 centrifugal casting Methods 0.000 claims abstract description 47
- 239000011148 porous material Substances 0.000 claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 18
- 238000000227 grinding Methods 0.000 claims description 62
- 230000001413 cellular effect Effects 0.000 claims description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 21
- 239000011230 binding agent Substances 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 19
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 18
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 13
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 12
- 229910001018 Cast iron Inorganic materials 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000004567 concrete Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 8
- 150000004645 aluminates Chemical class 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 7
- 229910052845 zircon Inorganic materials 0.000 claims description 7
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 6
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 5
- 229920002223 polystyrene Polymers 0.000 claims description 5
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920006324 polyoxymethylene Polymers 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 229910052580 B4C Inorganic materials 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims description 3
- 235000013877 carbamide Nutrition 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 5
- 239000007767 bonding agent Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 241000264877 Hippospongia communis Species 0.000 description 16
- 238000010586 diagram Methods 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000000956 alloy Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 7
- 238000005245 sintering Methods 0.000 description 7
- 239000000428 dust Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005215 recombination Methods 0.000 description 5
- 230000006798 recombination Effects 0.000 description 5
- 229910000599 Cr alloy Inorganic materials 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000000788 chromium alloy Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000011195 cermet Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001325 element alloy Inorganic materials 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 2
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910000756 V alloy Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
-
- 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
Abstract
The invention relates to a method for centrifugally casting a vertical mill roller made of ceramic-metal honeycomb composite materials, and belongs to the technical field of metal-based composite materials. According to the method, firstly, ceramic particles, pore forming agents and bonding agents are filled into a mold for preparation, and ceramic particle prefabricated bodies provided with embedding posts, embedding holes, sand mold contact surfaces and lug bosses are obtained; the embedding posts of every two ceramic particle prefabricated bodies in a plurality of ceramic particle prefabricated bodies are embedded into the embedding holes for splicing joint, and then, the ceramic particle prefabricated bodies subjected to the splicing joint are fixedly arranged in a loose piece metal mold; the loose piece metal mold is fixedly arranged in centrifugal casting equipment after being integrally preheated, high-temperature molten metal is cast, and after the heat treatment is carried out, the vertical mill roller made of ceramic-metal honeycomb composite materials is prepared. The method has the advantages that a plurality of small-block honeycomb porous ceramic prefabricated bodies are spliced into the whole prefabricated body, small blocks with defects can be replaced, the defect that the whole prefabricated body cannot be used due to local defects in the preparation process of the whole prefabricated body is avoided, the finished product rate is improved, and the production cost is reduced.
Description
Technical field
The present invention relates to a kind of method of centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill, belong to metal-base composites technical field.
Background technology
The anti-wear performance of ceramic-metal cellular composite material excellence, be widely used in cement, mine, metallurgy, power station or various similar industry, grinding roller of vertical mill application ceramic-metal cellular composite material, service life and abrasive dust efficiency all will be highly improved, the ductile metal post that ceramic-metal cellular composite material working face is surrounded by wear-resistant ceramic metal composite district and recombination region forms, there is following technical barrier in centrifugal casting ceramic honeycomb-metallic composite grinding roller of vertical mill, first how to prepare high strength, is easy to cast the honeycomb porous ceramic preforms oozed; Next how to splice fixed cellular porous ceramic preforms; Finally spun casting technique and Technology for Heating Processing.
Chinese invention patent CN103252268A discloses a kind of super abrasive centrifugal composite casting fetalism grinding roller and manufacture method thereof, its skin is high alloy wear-resistance layer, internal layer is graphitic steel ductile layers, its alloy-layer comprises Cr, Ni, Mo, W and V alloy, grinding roller manufactured by the method has wearability and toughness concurrently, but the wearability of high alloy wear-resistance layer has certain limit, and the application of high alloy material also improves production cost.Chinese invention patent CN102211048A discloses a kind of medium-speed pulverizer roller shell with cermet compositions, its method is netted for being mutually bonded to by ceramic particle, the overall compound of casting casting metals liquid, but there is following shortcoming in the method, first it to rely on merely between ceramic particle bonding mutually and the hole casting that produces is oozed, limit molten metal and cast the thickness oozed, thus make ceramet composite bed thickness very thin, and decentralization between ceramic particle is little, between ceramic particle, metal cannot effectively be played a supporting role, in wear process, ceramic particle easily peels off, wearability reduces greatly, secondly the method is by one-tenth adhered to one another for ceramic particle cancellated ceramic layer, then carries out casting to whole ceramic layer and oozes, and in casting cycle, whole ceramic layer is easy to cave in because a certain regio defect or molten metal impact can not use, and yield rate reduces greatly, in addition its grinding roller body and high-chromium alloy and ceramic particle are linked into an integrated entity by casting mode, because the thermal coefficient of expansion of three kinds of materials and thermal conductivity differ greatly, grinding roller is cast in rear cooling or heat treatment process, the metallurgical binding of its high-chromium alloy, ceramet recombination region and grinding roller body causing the crackle produced at faying face place to be expanded at whole grinding roller, increases the possibility of grinding roller cracking by easy.Chinese invention patent CN103769563A discloses the preparation method of a kind of active element sintering ZTA particle enhanced steel iron-based composite grinding roll and mill, its method is after being mixed by various active element powders, add appropriate binding agent and ZTA particle fully stirs, active metallic element powder is made evenly to be coated on particle surface, insert graphite jig heating post-drying, sintering obtains porous preforming block, prefabricated section is fixed on casting mold ad-hoc location and casting metals liquid, composite grinding roll or mill is obtained after cooling and demolding, the method uses active element powder for Ni, the metal dusts such as Cr, expensive, production cost is high, in addition Ni is relied on merely, the metal dusts such as Cr promote that the casting of molten metal is oozed, casting will be made to ooze recombination region finite thickness, and the decentralization of ceramic particle is little, metal between ceramic particle cannot play effective supporting role to ceramic particle.And the splicing fixing means between prefabricated section is particularly crucial in composite casting technology, this patent does not solve this technical problem, compared with centrifugal casting technique of the present invention, its common technology of infiltration casting can not ensure that molten metal casting is oozed thoroughly and obtains complete good recombination region.Chinese invention patent CN1367270A discloses a kind of production technology of centrifugal casting high wear-resistant alloy cast-iron composite wear-resisting roll collar, composite anti-wear roll ring skin is containing vanadium and multiple oligo-element alloy cast iron, internal layer is high-strength ductile cast iron, owing to containing vanadium and multiple oligo-element alloy, the hardness of the grinding roller manufactured by the method is higher, wearability is stronger, but because alloy species is more, addition is little, be difficult to during molten alloy accurately control its composition, and the hardness of outer layer alloys has certain limitation, too high hardness is very large by causing the toughness of outer layer alloys to reduce, affect serviceability.Chinese invention patent CN103736549A discloses a kind of preparation method of vertical mill metal matrix ceramic composites grinding roller, the method ceramic on metal reinforcement used material is formed by 10 ~ 40% corundum and 60 ~ 90% iron powder sinterings, high-chromium alloy liner plate and ceramic lining plate, one is cast into by molten steel between roller shell and grinding roller matrix, the method utilizes sintering process to prepare composite bed, because ceramic particle and iron powder proportion differ greatly, be difficult to ceramic particle is mixed with iron powder, and after molten iron is melting, ceramic particle will swim in molten iron top layer, it will be extremely uneven for being molded into the distribution of ceramic particle after mould, tissue after this is externally sintered does not have metal and melts post crystallization completely to form metal structure performance good, the molten steel of casting makes roller shell and grinding roller matrix consolidation be integrated, crackle in use procedure is easy to expand in whole grinding roller.Chinese invention patent CN103418790 discloses a kind of Anti-abrasion metal-ceramic composite product and preparation method thereof, it is characterized by and to mix with ceramic particle the cermet particles prefabricated component obtaining mixture and metal dust and make with metal dust used additives, the Anti-abrasion metal-ceramic composite product formed after high temperature sintering heat treatment, the method utilizes auxiliary agent Homogeneous phase mixing ceramic particle and metal dust, but after sintering after metal melting, ceramic particle upwards floats than metal dust young pathbreaker because of its proportion, thus cause ceramic particle skewness, and the metallic crystal formative tissue that the structure property after sintering compares melting is poor.
Summary of the invention
For above-mentioned prior art Problems existing and deficiency, the invention provides a kind of method of centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill.The method utilizes multiple fritter honeycomb porous ceramic preforms to be spliced into integral prefabricated body, defective fritter can be replaced, avoid in integral prefabricated production procedure, local defect causes the non-serviceable shortcoming of whole precast body, improve yield rate, reduce production cost, the present invention is achieved through the following technical solutions.
A method for centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill, its concrete steps are as follows:
Step 1, first ceramic particle, pore creating material and binding agent are mixed by 100:0.5 ~ 10:1 ~ 20 prepare precast body, then precast body is inserted mould and prepare ceramic particle precast body with inlaying post 1, inlaid hole 2 and sand mold contact surface and be provided with boss 3;
In step 2, some ceramic particle precast bodies of step 1 being obtained, the post 1 of inlaying of every ceramic particle precast body is between two embedded in inlaid hole 2 and splices, then be fixed on by the ceramic particle precast body spliced in the loose piece permanent mo(u)ld 7 scribbling 5 ~ 40mm thickness fireproof coating, the boss 3 on ceramic particle precast body makes ceramic particle precast body and loose piece permanent mo(u)ld 7 inner surface keep the gap of 5 ~ 10mm;
Step 3, loose piece permanent mo(u)ld 7 entirety in step 2 is preheated to 100 ~ 600 DEG C, then be secured by bolts in centrifugal casting apparatus, control 100 ~ 700 turns per minute of centrifugal casting apparatus, casting high-temperature liquid metal, treats that temperature is down to 800 ~ 1100 DEG C, and grinding roller is taken out in the demoulding, then about air cooling to 100 DEG C, heat up with 20 ~ 50 DEG C/h, to 250 ~ 500 DEG C of insulations 2 ~ 4 hours, last air cooling to room temperature obtained ceramic-metal cellular composite material grinding roller of vertical mill again.
In described step 1, ceramic particle is one or more the arbitrary proportion mixtures in fused alumina zirconia, aluminium oxide, zirconia, silicon nitride, carborundum, boron carbide, titanium carbide, tungsten carbide, titanium boride, and granularity is 0.1 ~ 4mm.
In described step 1, pore creating material is one or more the arbitrary proportion mixtures in polystyrene, polyethylene, polyvinyl alcohol, polyformaldehyde, carbonyl diamide, and granularity is 0.1 ~ 2mm.
In described step 1, binding agent is one or more the arbitrary proportion mixtures in boric acid, aluminate cement, sodium metasilicate, phenolic resins, Ludox.
Loose piece permanent mo(u)ld 7 metal shell thickness in described step 2 is 5 ~ 20mm.
Fireproof coating in described step 2 is one or more the arbitrary proportion mixtures in quartz sand, zircon sand, emergy, magnesia.
In described step 3, high-temperature liquid metal is potassium steel, ni-hard cast iron, one or both arbitrary proportion mixed liquors in rich chromium cast iron, spheroidal graphite cast-iron, graphitic steel.
The invention has the beneficial effects as follows:
1, prepared high strength, be easy to cast the honeycomb porous ceramic preforms oozed, volatilizable pore creating material is added in honeycomb porous ceramic preforms, improve the decentralization that composite bed thickness and ceramic particle are oozed in casting, and cost is low, and the present invention's binding agent used can make precast body have higher intensity;
2, the present invention utilizes multiple fritter honeycomb porous ceramic preforms to be spliced into integral prefabricated body, defective fritter can be replaced, and avoids in integral prefabricated production procedure, and local defect causes the non-serviceable shortcoming of whole precast body, improve yield rate, reduce production cost;
3, outer portion jig can be disobeyed, utilize precast body own structural characteristics, multiple ceramic honey comb precast body splicing be integrally fixed, honeycomb porous ceramic preforms side is provided with boss, make precast body and sand mold retain certain interval, be convenient to the comprehensive casting of molten metal and ooze;
4, solve the problem of the how overall preheating of honeycomb porous preform, and then improve the effect of casting and oozing;
5, effect is oozed in the casting utilizing centrifugal force to improve molten metal, is cooled to uniform temperature and directly takes out air cooling, simplify the quenching process of grinding roller, shorten heat treatment time after spun casting molten metal;
6, manufactured ceramic honeycomb-metallic composite grinding roller of vertical mill cost performance, wearability are high.
Accompanying drawing explanation
Fig. 1 is honeycomb porous preform connecting method schematic diagram of the present invention;
Fig. 2 is centrifugal casting apparatus structural representation of the present invention;
Fig. 3 is ceramic honeycomb of the present invention-metallic composite grinding roller of vertical mill structural representation;
Fig. 4 is the embodiment of the present invention 1 ceramic honeycomb-metallic composite partial duty face pictorial diagram.
In figure: 1-inlays post, 2-inlaid hole, 3-boss, the wear-resisting recombination region of 4-, 5-metallic matrix, 6-fireproof coating, 7-loose piece permanent mo(u)ld, 8-tapping hole, 9-cover plate.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment 1
The method of this centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill, its concrete steps are as follows:
Step 1, first ceramic particle, pore creating material and binding agent are mixed by 100:3:15 prepare precast body, then precast body is inserted mould and prepare ceramic particle precast body with inlaying post 1, inlaid hole 2 and sand mold contact surface and be provided with boss 3; Wherein ceramic particle is fused alumina zirconia, and granularity is 2mm; Pore creating material is polyformaldehyde, and granularity is 0.5mm; Aluminate cement and the Ludox of binding agent to be mass ratio be 10:5;
In step 2, some ceramic particle precast bodies of step 1 being obtained, the post 1 of inlaying of every ceramic particle precast body is between two embedded in inlaid hole 2 and splices, honeycomb porous preform connecting method schematic diagram as shown in Figure 1, then be fixed on by the ceramic particle precast body spliced in the loose piece permanent mo(u)ld 7 scribbling 5mm thickness fireproof coating, the boss 3 on ceramic particle precast body makes ceramic particle precast body and loose piece permanent mo(u)ld 7 inner surface keep the gap of 5mm; Wherein metal pattern 7 metal shell thickness is 5mm; Fireproof coating is quartz sand;
Step 3, loose piece permanent mo(u)ld 7 entirety in step 2 is preheated to 400 DEG C, then be secured by bolts in centrifugal casting apparatus, centrifugal casting apparatus structural representation as shown in Figure 2, control 200 turns per minute of centrifugal casting apparatus, to cast 1520 DEG C of high-temperature liquid metals, treat that temperature is down to 900 DEG C, grinding roller is taken out in the demoulding, then about air cooling to 100 DEG C, heat up with 40 DEG C/h again, to 450 DEG C of insulations 2 hours, last air cooling to room temperature obtains ceramic-metal cellular composite material grinding roller of vertical mill, ceramic-metal cellular composite material grinding roller of vertical mill structural representation as shown in Figure 3, partial duty face pictorial diagram as shown in Figure 1, wherein high-temperature liquid metal is potassium steel liquid.
Embodiment 2
The method of this centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill, its concrete steps are as follows:
Step 1, first ceramic particle, pore creating material and binding agent are mixed by 100:1:20 prepare precast body, then precast body is inserted mould and prepare ceramic particle precast body with inlaying post 1, inlaid hole 2 and sand mold contact surface and be provided with boss 3; Wherein ceramic particle is titanium carbide, and granularity is 1mm; Pore creating material is polystyrene, and granularity is 0.1mm; Aluminate cement and the boric acid of binding agent to be mass ratio be 5:15;
In step 2, some ceramic particle precast bodies of step 1 being obtained, the post 1 of inlaying of every ceramic particle precast body is between two embedded in inlaid hole 2 and splices, honeycomb porous preform connecting method schematic diagram as shown in Figure 1, then be fixed on by the ceramic particle precast body spliced in the loose piece permanent mo(u)ld 7 scribbling 40mm thickness fireproof coating, the boss 3 on ceramic particle precast body makes ceramic particle precast body and loose piece permanent mo(u)ld 7 inner surface keep the gap of 10mm; Wherein metal pattern 7 metal shell thickness is 20mm; Fireproof coating is zircon sand;
Step 3, loose piece permanent mo(u)ld 7 entirety in step 2 is preheated to 400 DEG C, then be secured by bolts in centrifugal casting apparatus, centrifugal casting apparatus structural representation as shown in Figure 2, control 300 turns per minute of centrifugal casting apparatus, to cast 1520 DEG C of high-temperature liquid metals, treat that temperature is down to 950 DEG C, grinding roller is taken out in the demoulding, then about air cooling to 100 DEG C, heat up with 40 DEG C/h again, to 450 DEG C of insulations 2 hours, last air cooling to room temperature obtains ceramic-metal cellular composite material grinding roller of vertical mill, ceramic-metal cellular composite material grinding roller of vertical mill structural representation as shown in Figure 3, wherein high-temperature liquid metal is ni-hard cast iron liquid.
Embodiment 3
The method of this centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill, its concrete steps are as follows:
Step 1, first ceramic particle, pore creating material and binding agent are mixed by 100:4:15 prepare precast body, then precast body is inserted mould and prepare ceramic particle precast body with inlaying post 1, inlaid hole 2 and sand mold contact surface and be provided with boss 3; Wherein ceramic particle is titanium carbide, and granularity is 1mm; Pore creating material is polystyrene, and granularity is 0.1mm; Aluminate cement and the boric acid of binding agent to be mass ratio be 3:12;
In step 2, some ceramic particle precast bodies of step 1 being obtained, the post 1 of inlaying of every ceramic particle precast body is between two embedded in inlaid hole 2 and splices, honeycomb porous preform connecting method schematic diagram as shown in Figure 1, then be fixed on by the ceramic particle precast body spliced in the loose piece permanent mo(u)ld 7 scribbling 20mm thickness fireproof coating, the boss 3 on ceramic particle precast body makes ceramic particle precast body and loose piece permanent mo(u)ld 7 inner surface keep the gap of 8mm; Wherein metal pattern 7 metal shell thickness is 10mm; Fireproof coating is emergy and the magnesia mixture of quality 1:1;
Step 3, loose piece permanent mo(u)ld 7 entirety in step 2 is preheated to 400 DEG C, then be secured by bolts in centrifugal casting apparatus, centrifugal casting apparatus structural representation as shown in Figure 2, control 200 turns per minute of centrifugal casting apparatus, to cast 1520 DEG C of high-temperature liquid metals, treat that temperature is down to 950 DEG C, grinding roller is taken out in the demoulding, then about air cooling to 100 DEG C, heat up with 30 DEG C/h again, to 450 DEG C of insulations 2 hours, last air cooling to room temperature obtains ceramic-metal cellular composite material grinding roller of vertical mill, ceramic-metal cellular composite material grinding roller of vertical mill structural representation as shown in Figure 3, wherein high-temperature liquid metal is rich chromium cast iron liquid.
Embodiment 4
The method of this centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill, its concrete steps are as follows:
Step 1, first ceramic particle, pore creating material and binding agent are mixed by 100:2:13 prepare precast body, then precast body is inserted mould and prepare ceramic particle precast body with inlaying post 1, inlaid hole 2 and sand mold contact surface and be provided with boss 3; Wherein ceramic particle is titanium carbide, and granularity is 1.5mm; Pore creating material is polystyrene, and granularity is 0.3mm; Aluminate cement and the phenolic resins of binding agent to be mass ratio be 3:10;
In step 2, some ceramic particle precast bodies of step 1 being obtained, the post 1 of inlaying of every ceramic particle precast body is between two embedded in inlaid hole 2 and splices, connecting method schematic diagram as shown in Figure 1, then be fixed on by the ceramic particle precast body spliced in the loose piece permanent mo(u)ld 7 scribbling 30mm thickness fireproof coating, the boss 3 on ceramic particle precast body makes ceramic particle precast body and loose piece permanent mo(u)ld 7 inner surface keep the gap of 6mm; Wherein metal pattern 7 metal shell thickness is 15mm; Fireproof coating is zircon sand and the magnesia mixture of quality 1:1;
Step 3, loose piece permanent mo(u)ld 7 entirety in step 2 is preheated to 400 DEG C, then be secured by bolts in centrifugal casting apparatus, heart Casting Equipment structural representation as shown in Figure 2, control 300 turns per minute of centrifugal casting apparatus, to cast 1520 DEG C of high-temperature liquid metals, treat that temperature is down to 850 DEG C, grinding roller is taken out in the demoulding, then about air cooling to 100 DEG C, heat up with 40 DEG C/h again, to 450 DEG C of insulations 2 hours, last air cooling to room temperature obtains ceramic-metal cellular composite material grinding roller of vertical mill, ceramic-metal cellular composite material grinding roller of vertical mill structural representation as shown in Figure 3, wherein high-temperature liquid metal is ni-hard cast iron liquid.
Embodiment 5
The method of this centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill, its concrete steps are as follows:
Step 1, first ceramic particle, pore creating material and binding agent are mixed by 100:3:15 prepare precast body, then precast body is inserted mould and prepare ceramic particle precast body with inlaying post 1, inlaid hole 2 and sand mold contact surface and be provided with boss 3; Wherein ceramic particle is fused alumina zirconia, and granularity is 2mm; Pore creating material is polyformaldehyde, and granularity is 0.5mm; Aluminate cement and the Ludox of binding agent to be mass ratio be 5:10;
In step 2, some ceramic particle precast bodies of step 1 being obtained, the post 1 of inlaying of every ceramic particle precast body is between two embedded in inlaid hole 2 and splices, honeycomb porous preform connecting method schematic diagram as shown in Figure 1, then be fixed on by the ceramic particle precast body spliced in the loose piece permanent mo(u)ld 7 scribbling 20mm thickness fireproof coating, the boss 3 on ceramic particle precast body makes ceramic particle precast body and loose piece permanent mo(u)ld 7 inner surface keep the gap of 8mm; Wherein metal pattern 7 metal shell thickness is 18mm; Fireproof coating is zircon sand and the emergy mixture of quality 1:1;
Step 3, loose piece permanent mo(u)ld 7 entirety in step 2 is preheated to 400 DEG C, then be secured by bolts in centrifugal casting apparatus, centrifugal casting apparatus structural representation as shown in Figure 2, control 200 turns per minute of centrifugal casting apparatus, to cast 1250 ~ 1380 DEG C of high-temperature liquid metals, treat that temperature is down to 900 DEG C, grinding roller is taken out in the demoulding, then about air cooling to 100 DEG C, heat up with 20 DEG C/h again, to 450 DEG C of insulations 2 hours, last air cooling to room temperature obtains ceramic-metal cellular composite material grinding roller of vertical mill, ceramic honeycomb-metallic composite grinding roller of vertical mill structural representation as shown in Figure 3, wherein high-temperature liquid metal is spheroidal graphite cast-iron liquid.
Embodiment 6
The method of this centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill, its concrete steps are as follows:
Step 1, first ceramic particle, pore creating material and binding agent are mixed by 100:0.5:1 prepare precast body, then precast body is inserted mould and prepare ceramic particle precast body with inlaying post 1, inlaid hole 2 and sand mold contact surface and be provided with boss 3; Wherein ceramic particle is the aluminium oxide of quality 1:1:1:1, zirconia, silicon nitride and silicon carbide blend, and granularity is 0.1mm; Pore creating material is polyvinyl alcohol, and granularity is 2mm; Binding agent is sodium metasilicate;
In step 2, some ceramic particle precast bodies of step 1 being obtained, the post 1 of inlaying of every ceramic particle precast body is between two embedded in inlaid hole 2 and splices, honeycomb porous preform connecting method schematic diagram as shown in Figure 1, then be fixed on by the ceramic particle precast body spliced in the loose piece permanent mo(u)ld 7 scribbling 30mm thickness fireproof coating, the boss 3 on ceramic particle precast body makes ceramic particle precast body and loose piece permanent mo(u)ld 7 inner surface keep the gap of 6mm; Wherein metal pattern 7 metal shell thickness is 15mm; Fireproof coating is zircon sand and the magnesia mixture of quality 1:1;
Step 3, loose piece permanent mo(u)ld 7 entirety in step 2 is preheated to 100 DEG C, then be secured by bolts in centrifugal casting apparatus, centrifugal casting apparatus structural representation as shown in Figure 2, control 700 turns per minute of centrifugal casting apparatus, to cast 1520 DEG C of high-temperature liquid metals, treat that temperature is down to 800 DEG C, grinding roller is taken out in the demoulding, then about air cooling to 100 DEG C, heat up with 50 DEG C/h again, to 250 DEG C of insulations 3 hours, last air cooling to room temperature obtains ceramic-metal cellular composite material grinding roller of vertical mill, ceramic-metal cellular composite material grinding roller of vertical mill structural representation as shown in Figure 3, wherein rich chromium cast iron and the spheroidal graphite cast-iron liquid of high-temperature liquid metal to be mass ratio be 1:1.
Embodiment 7
The method of this centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill, its concrete steps are as follows:
Step 1, first ceramic particle, pore creating material and binding agent are mixed by 100:10:15 prepare precast body, then precast body is inserted mould and prepare ceramic particle precast body with inlaying post 1, inlaid hole 2 and sand mold contact surface and be provided with boss 3; Wherein ceramic particle is the boron carbide of quality 1:1:1, tungsten carbide and titanium boride mixture, and granularity is 4mm; Polyvinyl alcohol and the carbonyl diamide mixture of pore creating material to be mass ratio be 1:1, granularity is 1.8mm; Binding agent is sodium metasilicate;
In step 2, some ceramic particle precast bodies of step 1 being obtained, the post 1 of inlaying of every ceramic particle precast body is between two embedded in inlaid hole 2 and splices, honeycomb porous preform connecting method schematic diagram as shown in Figure 1, then be fixed on by the ceramic particle precast body spliced in the loose piece permanent mo(u)ld 7 scribbling 30mm thickness fireproof coating, the boss 3 on ceramic particle precast body makes ceramic particle precast body and loose piece permanent mo(u)ld 7 inner surface keep the gap of 6mm; Wherein metal pattern 7 metal shell thickness is 15mm; Fireproof coating is zircon sand and the magnesia mixture of quality 1:1;
Step 3, loose piece permanent mo(u)ld 7 entirety in step 2 is preheated to 600 DEG C, then be secured by bolts in centrifugal casting apparatus, centrifugal casting apparatus structural representation as shown in Figure 2, control 100 turns per minute of centrifugal casting apparatus, to cast 1520 DEG C of high-temperature liquid metals, treat that temperature is down to 1100 DEG C, grinding roller is taken out in the demoulding, then about air cooling to 100 DEG C, heat up with 40 DEG C/h again, to 500 DEG C of insulations 4 hours, last air cooling to room temperature obtains ceramic-metal cellular composite material grinding roller of vertical mill, ceramic honeycomb-metallic composite grinding roller of vertical mill structural representation as shown in Figure 3, wherein high-temperature liquid metal is graphite molten steel.
By reference to the accompanying drawings the specific embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (7)
1. a method for centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill, is characterized in that concrete steps are as follows:
Step 1, first ceramic particle, pore creating material and binding agent are mixed by 100:0.5 ~ 10:1 ~ 20 preparing precast body, then precast body being prepared ceramic particle precast body with inlaying post (1), inlaid hole (2) and sand mold contact surface and be provided with boss (3) by inserting mould;
In step 2, some ceramic particle precast bodies of step 1 being obtained, the post (1) of inlaying of every ceramic particle precast body is between two embedded in splicing in inlaid hole (2), then be fixed on by the ceramic particle precast body spliced in the loose piece permanent mo(u)ld (7) scribbling 5 ~ 40mm thickness fireproof coating, the boss (3) on ceramic particle precast body makes ceramic particle precast body and loose piece permanent mo(u)ld (7) inner surface keep the gap of 5 ~ 10mm;
Step 3, loose piece permanent mo(u)ld (7) entirety in step 2 is preheated to 100 ~ 600 DEG C, then be secured by bolts in centrifugal casting apparatus, control 100 ~ 700 turns per minute of centrifugal casting apparatus, casting high-temperature liquid metal, treats that temperature is down to 800 ~ 1100 DEG C, and grinding roller is taken out in the demoulding, then about air cooling to 100 DEG C, heat up with 20 ~ 50 DEG C/h, to 250 ~ 500 DEG C of insulations 2 ~ 4 hours, last air cooling to room temperature obtained ceramic-metal cellular composite material grinding roller of vertical mill again.
2. the method for centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill according to claim 1, it is characterized in that: in described step 1, ceramic particle is one or more the arbitrary proportion mixtures in fused alumina zirconia, aluminium oxide, zirconia, silicon nitride, carborundum, boron carbide, titanium carbide, tungsten carbide, titanium boride, and granularity is 0.1 ~ 4mm.
3. the method for centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill according to claim 1, it is characterized in that: in described step 1, pore creating material is one or more the arbitrary proportion mixtures in polystyrene, polyethylene, polyvinyl alcohol, polyformaldehyde, carbonyl diamide, and granularity is 0.1 ~ 2mm.
4. the method for centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill according to claim 1, is characterized in that: in described step 1, binding agent is one or more the arbitrary proportion mixtures in boric acid, aluminate cement, sodium metasilicate, phenolic resins, Ludox.
5. the method for centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill according to claim 1, is characterized in that: loose piece permanent mo(u)ld (7) the metal shell thickness in described step 2 is 5 ~ 20mm.
6. the method for centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill according to claim 1, is characterized in that: the fireproof coating in described step 2 is one or more the arbitrary proportion mixtures in quartz sand, zircon sand, emergy, magnesia.
7. the method for centrifugal casting ceramic-metal cellular composite material grinding roller of vertical mill according to claim 1, it is characterized in that: in described step 3, high-temperature liquid metal is potassium steel, ni-hard cast iron, one or both arbitrary proportion mixed liquors in rich chromium cast iron, spheroidal graphite cast-iron, graphitic steel.
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