CN202570267U - Abrasion-resistant grinding roller - Google Patents
Abrasion-resistant grinding roller Download PDFInfo
- Publication number
- CN202570267U CN202570267U CN201120561903.9U CN201120561903U CN202570267U CN 202570267 U CN202570267 U CN 202570267U CN 201120561903 U CN201120561903 U CN 201120561903U CN 202570267 U CN202570267 U CN 202570267U
- Authority
- CN
- China
- Prior art keywords
- ceramic particles
- hard ceramic
- grinding roller
- roller
- base metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000227 grinding Methods 0.000 title claims abstract description 28
- 238000005299 abrasion Methods 0.000 title abstract 5
- 239000000919 ceramic Substances 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000002245 particle Substances 0.000 abstract description 30
- 239000003245 coal Substances 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract description 3
- 238000005272 metallurgy Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000002425 crystallisation Methods 0.000 abstract description 2
- 230000008025 crystallization Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000010953 base metal Substances 0.000 abstract 5
- 230000000694 effects Effects 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 10
- 229910052804 chromium Inorganic materials 0.000 description 9
- 239000011651 chromium Substances 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 229910001018 Cast iron Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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- Crushing And Grinding (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The utility model provides an abrasion-resistant grinding roller which comprises a roller sleeve and a roller core. A working surface on the roller sleeve comprises a base material layer and a composite layer, the composite layer comprises base metal and hard ceramic particles, and the hard ceramic particles are staggered to form a regular mesh spread in the base metal. The hard ceramic particles are arranged to form the regular mesh, the hard ceramic particles and the molten base metal are subjected to metallurgical combination reaction under the action of the molten base metal at high temperature, the local temperature is reduced due to the heat absorption effect of the hard ceramic particles, the course of crystallization is shortened, and further diffusion of elements in the hard ceramic particles is stopped, so that a good metallurgical transitional combination effect of the hard ceramic particles and the base metal is achieved, interface bonding is firm, abrasion resistance and tenacity are organically unified, the overall performance of the grinding roller is obviously improved, and the abrasion-resistant grinding roller can be widely applied to abrasion resistance in fields of mines, electric power, metallurgy, coal, building materials and the like.
Description
Technical field
The utility model relates to a kind of grinding roller, particularly a kind of wear-resistant grinding roller.
Background technology
In industries such as coal, metallurgy, mine, electric power, building materials, refractory material, the energy, pulverized coal preparation system uses a large amount of grinding rollers, and it is as main wear-out part, and the quality of its ruuning situation has determined economic benefit of enterprises to a certain extent.The utility model be primarily aimed at the thermal power plant medium-speed pulverizer grinding roller and research and develop, the grinding roller that uses of thermal power plant is mainly the cast-in-block rich chromium cast iron at present.Along with the raising of solder technology, after the rich chromium cast iron wearing and tearing, repair the build-up wear-resistant alloy-layer in the above repeatedly, the service life of improving grinding roller.The material of grinding roller mainly is a rich chromium cast iron at present; The blank that adopts integral casting process to cast out has run into a lot of difficulties in follow-up mechanical processing process, people are often in order to satisfy the performance that is easy to process; The normal content that reduces chromium; But after chromium content reduced, wearability and this a pair of contradiction of machining property of grinding roller had appearred in its hardness and wearability variation like this.Its shock resistance of the fragility of rich chromium cast iron decision is poor simultaneously, and chromium content is high more, and wearability is good more, and fragility is big more, and chromium content is low more, and wearability is poor more, and toughness is good more, has occurred the contradiction of impact resistance and wearability so again.Usually the grinding roller of scratch system all is in certain impact operation, and in power plants, the ature of coal difference of use is bigger, and the life-span of causing grinding roller often not reach design just lost efficacy.While cast-in-block rich chromium cast iron grinding roller, its machining property is relatively poor, is unfavorable for subsequent treatment.Though built-up welding can improve service life, surfacing equipment is expensive, built-up welding once, its life-span increases little, the frequent replacing of power plant's grinding roller simultaneously needs to shut down, and causes great economic loss.
The utility model content
The purpose of the utility model is to provide a kind of can satisfy the high performance grinding roller that uses under the complex working conditions such as various wearing and tearing, impact.
The utility model provides a kind of so wear-resistant grinding roller; Form by roller shell and roller core; Working face on the said roller shell (zone that withstands shocks and wear and tear) is made up of substrate layer and composite bed, and this composite bed is made up of the ceramic on metal particulate reinforced composite.
Said ceramic on metal particulate reinforced composite is made up of substrate metal and hard ceramic particles piece, and wherein the hard ceramic particles piece is staggered into netted being distributed in the substrate metal of rule.
The volume of the mesh portion that said hard ceramic particles piece constitutes accounts for 20～80% of composite bed volume.
The hard ceramic particles piece becomes regular net distribution in the grinding roller working region in this grinding roller that has a composite bed, improves its shock-resistant and anti-wear performance.Hard ceramic particles is a kind of in aluminium oxide, carborundum, tungsten carbide, silicon nitride, the titanium nitride or any several kinds, the hard ceramic particles piece that is formed by sintering or bonding; Substrate metal is potassium steel, steel alloy, high chrome, ordinary carbon steel, casting pig or spheroidal graphite cast-iron.
Compare with prior art, the utility model has following beneficial effect:
The utility model is arranged into the hard ceramic particles piece regular netted, and under the high temperature action of substrate metal liquid, metallurgical combination reaction takes place for hard ceramic particles and substrate metal liquid; Because the heat-absorbing action of hard ceramic particles has reduced local temperature, shortened crystallization process simultaneously; Having hindered the element in the hard ceramic particles further spreads; Combine thereby make hard ceramic particles piece and substrate metal form the excellent metallurgical transition, the interface combines firmly, wearability and toughness organic unity; Gained grinding roller overall performance significantly improves, and can be widely used in wear-resisting fields such as mine, electric power, metallurgy, coal, building materials.
Description of drawings
Fig. 1 is the structural representation of the grinding roller of the utility model;
Fig. 2 is the vertical face cross-sectional schematic of the grinding roller of the utility model;
Fig. 3 is the partial enlarged drawing of composite bed 2 among Fig. 1, Fig. 2.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.
Embodiment 1
Like Fig. 1～3; Anti abrasive grinding roller; Form by roller shell 1 and roller core; Working face on the said roller shell 1 (zone that withstands shocks and wear and tear) is made up of substrate layer and composite bed 2, and this composite bed 2 is made up of substrate metal 3 and hard ceramic particles piece 4, and wherein hard ceramic particles piece 4 is staggered into netted being distributed in the substrate metal 3 of rule; The volume of the mesh portion that the hard ceramic particles piece constitutes accounts for 20% of composite bed volume.Hard ceramic particles is an aluminium oxide; Substrate metal is a steel alloy.
Like Fig. 1～3; Anti abrasive grinding roller; Form by roller shell 1 and roller core; Working face on the said roller shell 1 (zone that withstands shocks and wear and tear) is made up of substrate layer and composite bed 2, and this composite bed 2 is made up of substrate metal 3 and hard ceramic particles piece 4, and wherein hard ceramic particles piece 4 is staggered into netted being distributed in the substrate metal 3 of rule; The volume of the mesh portion that the hard ceramic particles piece constitutes accounts for 40% of composite bed volume.Hard ceramic particles is carborundum and tungsten carbide; Substrate metal is a spheroidal graphite cast-iron.
Like Fig. 1～3; Anti abrasive grinding roller; Form by roller shell 1 and roller core; Working face on the said roller shell 1 (zone that withstands shocks and wear and tear) is made up of substrate layer and composite bed 2, and this composite bed 2 is made up of substrate metal 3 and hard ceramic particles piece 4, and wherein hard ceramic particles piece 4 is staggered into netted being distributed in the substrate metal 3 of rule; The volume of the mesh portion that the hard ceramic particles piece constitutes accounts for 80% of composite bed volume.Hard ceramic particles is tungsten carbide, silicon nitride and titanium nitride; Substrate metal is a potassium steel.
Claims (1)
1. a wear-resistant grinding roller is made up of roller shell and roller core, it is characterized in that: the working face on the said roller shell is made up of substrate layer and composite bed, and this composite bed is made up of the ceramic on metal particulate reinforced composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120561903.9U CN202570267U (en) | 2011-12-29 | 2011-12-29 | Abrasion-resistant grinding roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120561903.9U CN202570267U (en) | 2011-12-29 | 2011-12-29 | Abrasion-resistant grinding roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202570267U true CN202570267U (en) | 2012-12-05 |
Family
ID=47239723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120561903.9U Expired - Lifetime CN202570267U (en) | 2011-12-29 | 2011-12-29 | Abrasion-resistant grinding roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202570267U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105543639A (en) * | 2015-12-30 | 2016-05-04 | 河北津西钢铁集团大方重工科技有限公司 | Centrifugal ceramic composite vertical mill roller sleeve and manufacturing method thereof |
-
2011
- 2011-12-29 CN CN201120561903.9U patent/CN202570267U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105543639A (en) * | 2015-12-30 | 2016-05-04 | 河北津西钢铁集团大方重工科技有限公司 | Centrifugal ceramic composite vertical mill roller sleeve and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CHONGQING SHANGHUI MECHANICAL AND ELECTRICAL TECHNOLOGY CO., LTD. Assignor: Kunming University of Science and Technology Contract record no.: 2014530000096 Denomination of utility model: Abrasion-resistant grinding roller Granted publication date: 20121205 License type: Exclusive License Record date: 20140715 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |
|
| CX01 | Expiry of patent term |