CN205008044U - Compound grinding roller of detachable ceramal - Google Patents
Compound grinding roller of detachable ceramal Download PDFInfo
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- CN205008044U CN205008044U CN201520658299.XU CN201520658299U CN205008044U CN 205008044 U CN205008044 U CN 205008044U CN 201520658299 U CN201520658299 U CN 201520658299U CN 205008044 U CN205008044 U CN 205008044U
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Abstract
The utility model discloses a compound grinding roller of detachable ceramal, include the grinding roller roller core that forms by the casting of metal substrate material, grinding roller roller core surface mounting has sectional type roller leather sheet board, roller leather sheet board is formed with the ceramic prefab complex of casting by wear -resistant alloy material, roller leather sheet board terminal surface is equipped with the bolt hole, be equipped with in the bolt hole with the bolt that the grinding roller roller core is connected, the grinding roller roller core pass through the bolt with roller leather sheet board fixed connection, inlay on bolt hole upper portion has the ceramic body. The utility model discloses roller leather sheet board foot cun little, light in weight, casting quality, thermal treatment technology are easily controlled, and the finished product qualification rate is high, roller leather sheet board surface is formed with abrasion -resistant alloy is compound by the ceramic prefab of high abrasion, has dual wear resistance, also has metal material's toughness simultaneously, because of roller leather sheet board terminal surface adopts the bolt fastening, can carry out the scene and dismantle, then change new system roller leather sheet board.
Description
Technical field
The utility model relates to a kind of detachable ceramal composite grinding roll, is applicable to the grinding roller of the various Vertical Mills of industry such as thermal power generation, cement, metallurgy, mine.
Background technology
In industries such as electric power, cement, metallurgy, mines, pulverized coal preparation system uses a large amount of grinding rollers, and it is as main wearing piece, the quality of its quality, and particularly anti-wear performance directly has influence on the operating rate of powder process, quality of pc, grinding roller consumption and production cost.Due to any grinding roller material, under powder process working condition, have comparatively serious wearing and tearing, after more serious pit, groove appear in wearing and tearing, coal pulverizer coal dust efficiency declines, and pulverizer capacity is not enough.
Current thermal power plant grinding roller major part used is cast-in-block rich chromium cast iron, after service wear, build-up wear-resistant alloy-layer can improve the service life of grinding roller repeatedly in the above, but cast-in-block high-chromium alloy grinding roller run into ature of coal poor time wear process in easily occur fracture.In addition, although built-up welding can improve service life, easily occur overlay cladding obscission, in addition, built-up welding cost is higher, and after built-up welding once, service life can extend 1 year at most, and power plant frequently maintenance down causes great economic loss.
The composite grinding roll that Vega company of India produces have employed second casting technique, first high chromium alloy material casting wear-resistant ceramic grid body is adopted to prepare ceramal composite liner, and then second casting is carried out to ceramal composite liner prepare composite grinding roll, it is short that this technique solves the overall high-chromium alloy grinding roller life-span, a price high difficult problem, but there is the not wear-resisting defect of nodular cast iron between whole roll surface every block liner plate and liner plate, once serious wear will accelerate ceramal wear liner, in addition, whole grinding roller can not be repaired after scrapping, directly scrap, a large amount of maintenance costs is added to power plant.The ceramal composite grinding roll that Magotteaux company of Belgium produces adopts high chromium alloy material once to cast ceramic central layer (being composited by ceramic particle) to form, meet the service life of coal pulverizer, but after this grinding roller uses and scraps, roller core cannot carry out Bead weld repair, again buys the funds expenditure that grinding roller adds power plant.In addition, this technology rests in abroad, and the after-sale service cycle is longer, cannot in time for power plant solves quality problems.
Utility model content
Utility model object: the purpose of this utility model is to solve deficiency of the prior art, there is provided a kind of roller surface lining plate size little, lightweight, casting quality, Technology for Heating Processing are easy to control, and product qualified rate is high, the detachable ceramal composite grinding roll of convenient disassembly.
Technical scheme: a kind of detachable ceramal composite grinding roll, comprise the grinding roller roller core of being cast by metal matrix material, described grinding roller roller core surface is provided with sectional type roller surface lining plate, described roller surface lining plate is composited by wear resistant alloy material and cast ceramic prefabricated component, described roller surface lining plate end face is provided with bolt hole, the bolt be connected with described grinding roller roller core is housed in described bolt hole, described grinding roller roller core is fixedly connected with described roller surface lining plate by bolt, and described bolt hole top is inlaid with ceramic body.
Further, described metal matrix material is spheroidal graphite cast-iron or medium carbon steel.
Further, the bottom surface of described roller surface lining plate is planar structure.
Further, the surface of described grinding roller roller core is polygon plane structure.
Further, described wear resistant alloy material is rich chromium cast iron or potassium steel.
Further, described ceramic preform is formed by ceramic particle and metal alloy powder mixed sintering.
Further, described ceramic preform is cellular or latticed, and thickness is 20-50mm.
Further, described bolt is dormant bolt.
Beneficial effect: the utility model has following beneficial effect:
(1) roller surface lining plate surface is composited by ceramic preform and the antifriction alloy of high abrasion, has dual anti-wear performance, while also there is the toughness of metal material;
(2) ceramic preform adopts cellular or latticed, and during service wear, the different high-abrasive material in surface defines difference in height, contributes to the grinding efficiency improving coal dust;
(3) roller surface lining plate floor design becomes planar structure to be easy to processing, and be the contact that polygonal roller core achieves face and face with surface, ensure that running central roll skin can not rupture, solve that roller surface lining plate bottom surface is in the past that cambered surface or spherical structure do not mate with roller core surface, the difficult problem of easy fracture in running;
(4) roller core adopts spheroidal graphite cast-iron or mild steel material, and ensure that the toughness that composite grinding roll is good and impact, foundry goods is without the need to heat-treating, and material relative wear alloy material price own is low, reduces manufacturing cost;
(5) roller surface lining plate size is little, lightweight, and casting quality, Technology for Heating Processing are easy to control, and product qualified rate is high;
(6) the composite grinding roll wearing and tearing later stage, because roller surface lining plate end face adopts bolt to fix, can field stripping be carried out, then change brand-new roller surface lining plate, solve a difficult problem for composite grinding roll unrepairable, both shortened and also saved a large amount of maintenance costs maintenance time.
Accompanying drawing explanation
Fig. 1 is the assembly structure sectional view of the utility model composite grinding roll;
Fig. 2 is the assembly structure front view of the utility model composite grinding roll;
Fig. 3 is the structural representation of the utility model ceramic preform;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is the structural representation of the utility model roller surface lining plate;
Fig. 6 is the A-A sectional view of Fig. 5;
Fig. 7 is the structural representation of the utility model roller core;
Fig. 8 is the sectional view of Fig. 7.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:
The detachable ceramal composite grinding roll of one as shown in Fig. 1 to Fig. 8, this composite grinding roll comprises the grinding roller roller core 1 of being cast by metal matrix material, described grinding roller roller core 1 surface is provided with sectional type roller surface lining plate 2, described roller surface lining plate 2 is composited by wear resistant alloy material and cast ceramic prefabricated component 3, described roller surface lining plate 2 end face is provided with bolt hole, the bolt 4 be connected with described grinding roller roller core 1 is housed in described bolt hole, described grinding roller roller core 1 is fixedly connected with described roller surface lining plate 2 by bolt 4, and described bolt hole top is inlaid with ceramic body 5.
As the further optimization of technique scheme, described metal matrix material is spheroidal graphite cast-iron or medium carbon steel.The bottom surface of described roller surface lining plate 2 is planar structure.The surface of described grinding roller roller core 1 is polygon plane structure.Described wear resistant alloy material is rich chromium cast iron or potassium steel.Described ceramic preform 3 is formed by ceramic particle and metal alloy powder mixed sintering.Described ceramic preform 3 is cellular or latticed, and thickness is 20-50mm.Described bolt 4 is dormant bolt.
During the assembling of this composite grinding roll, roller surface lining plate 2 block-by-block be composited by rich chromium cast iron cast ceramic prefabricated component 3 is arranged on grinding roller roller core 1 surface of being cast by spheroidal graphite cast-iron, roller surface lining plate end face is provided with bolt hole, the bolt 4 be connected with roller core is housed, the ceramic embedded body 5 in bolt hole top in bolt hole.
The utility model has following beneficial effect:
(1) roller surface lining plate surface is composited by ceramic preform and the antifriction alloy of high abrasion, has dual anti-wear performance, while also there is the toughness of metal material;
(2) ceramic preform adopts cellular or latticed, and during service wear, the different high-abrasive material in surface defines difference in height, contributes to the grinding efficiency improving coal dust;
(3) roller surface lining plate floor design becomes planar structure to be easy to processing, and be the contact that polygonal roller core achieves face and face with surface, ensure that running central roll skin can not rupture, solve that roller surface lining plate bottom surface is in the past that cambered surface or spherical structure do not mate with roller core surface, the difficult problem of easy fracture in running;
(4) roller core adopts spheroidal graphite cast-iron or mild steel material, and ensure that the toughness that composite grinding roll is good and impact, foundry goods is without the need to heat-treating, and material relative wear alloy material price own is low, reduces manufacturing cost;
(5) roller surface lining plate size is little, lightweight, and casting quality, Technology for Heating Processing are easy to control, and product qualified rate is high;
(6) the composite grinding roll wearing and tearing later stage, because roller surface lining plate end face adopts bolt to fix, can field stripping be carried out, then change brand-new roller surface lining plate, solve a difficult problem for composite grinding roll unrepairable, both shortened and also saved a large amount of maintenance costs maintenance time.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (8)
1. a detachable ceramal composite grinding roll, it is characterized in that: comprise the grinding roller roller core (1) of being cast by metal matrix material, described grinding roller roller core (1) surface is provided with sectional type roller surface lining plate (2), described roller surface lining plate (2) is composited by wear resistant alloy material and cast ceramic prefabricated component (3), described roller surface lining plate (2) end face is provided with bolt hole, the bolt (4) be connected with described grinding roller roller core (1) is housed in described bolt hole, described grinding roller roller core (1) is fixedly connected with described roller surface lining plate (2) by bolt (4), described bolt hole top is inlaid with ceramic body (5).
2. the detachable ceramal composite grinding roll of one according to claim 1, is characterized in that: described metal matrix material is spheroidal graphite cast-iron or medium carbon steel.
3. the detachable ceramal composite grinding roll of one according to claim 1, is characterized in that: the bottom surface of described roller surface lining plate (2) is planar structure.
4. the detachable ceramal composite grinding roll of one according to claim 1, is characterized in that: the surface of described grinding roller roller core (1) is polygon plane structure.
5. the detachable ceramal composite grinding roll of one according to claim 1, is characterized in that: described wear resistant alloy material is rich chromium cast iron or potassium steel.
6. the detachable ceramal composite grinding roll of one according to claim 1, is characterized in that: described ceramic preform (3) is formed by ceramic particle and metal alloy powder mixed sintering.
7. the detachable ceramal composite grinding roll of the one according to claim 1 or 6, is characterized in that: described ceramic preform (3) is for cellular or latticed, and thickness is 20-50mm.
8. the detachable ceramal composite grinding roll of one according to claim 1, is characterized in that: described bolt (4) is dormant bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520658299.XU CN205008044U (en) | 2015-08-28 | 2015-08-28 | Compound grinding roller of detachable ceramal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520658299.XU CN205008044U (en) | 2015-08-28 | 2015-08-28 | Compound grinding roller of detachable ceramal |
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| Publication Number | Publication Date |
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| CN205008044U true CN205008044U (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520658299.XU Active CN205008044U (en) | 2015-08-28 | 2015-08-28 | Compound grinding roller of detachable ceramal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008536A (en) * | 2017-05-31 | 2017-08-04 | 南通高欣耐磨科技股份有限公司 | One kind can repair ceramet composite grinding roll and manufacture method |
| CN108855377A (en) * | 2018-07-03 | 2018-11-23 | 上海电气上重碾磨特装设备有限公司 | A kind of coal pulverizer mill roll sleeve and preparation method thereof |
| CN111590053A (en) * | 2020-04-22 | 2020-08-28 | 南通高欣耐磨科技股份有限公司 | Manufacturing method of easily-machined and repairable high-wear-resistance metal ceramic composite grinding roller |
| CN115518736A (en) * | 2022-06-30 | 2022-12-27 | 华能海南发电股份有限公司东方电厂 | Cermet grinding roller sleeve, grinding disc lining plate and casting method |
-
2015
- 2015-08-28 CN CN201520658299.XU patent/CN205008044U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008536A (en) * | 2017-05-31 | 2017-08-04 | 南通高欣耐磨科技股份有限公司 | One kind can repair ceramet composite grinding roll and manufacture method |
| CN108855377A (en) * | 2018-07-03 | 2018-11-23 | 上海电气上重碾磨特装设备有限公司 | A kind of coal pulverizer mill roll sleeve and preparation method thereof |
| CN111590053A (en) * | 2020-04-22 | 2020-08-28 | 南通高欣耐磨科技股份有限公司 | Manufacturing method of easily-machined and repairable high-wear-resistance metal ceramic composite grinding roller |
| CN111590053B (en) * | 2020-04-22 | 2021-09-03 | 南通高欣耐磨科技股份有限公司 | Manufacturing method of easily-machined and repairable high-wear-resistance metal ceramic composite grinding roller |
| CN115518736A (en) * | 2022-06-30 | 2022-12-27 | 华能海南发电股份有限公司东方电厂 | Cermet grinding roller sleeve, grinding disc lining plate and casting method |
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