CN107138241A - A kind of wear-resisting composite liner and preparation method thereof - Google Patents
A kind of wear-resisting composite liner and preparation method thereof Download PDFInfo
- Publication number
- CN107138241A CN107138241A CN201710355112.2A CN201710355112A CN107138241A CN 107138241 A CN107138241 A CN 107138241A CN 201710355112 A CN201710355112 A CN 201710355112A CN 107138241 A CN107138241 A CN 107138241A
- Authority
- CN
- China
- Prior art keywords
- wear
- mold insert
- main body
- wearing coat
- prefabricated mold
- 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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims abstract description 56
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002245 particle Substances 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000004576 sand Substances 0.000 claims description 18
- 238000005553 drilling Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000005498 polishing Methods 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 229910001651 emery Inorganic materials 0.000 description 3
- 235000000396 iron Nutrition 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/22—Lining for containers
Abstract
A kind of wear-resisting composite liner and preparation method thereof, is related to liner plate manufacture field.Including high chrome lining main body and ceramic wearing coat, prefabricated mold insert is provided with the ceramic wearing coat, the prefabricated mold insert is provided with screwed hole, the high chrome lining main body is provided with the connecting hole consistent with screw thread centerline hole, the high chrome lining main body and prefabricated mold insert are connected by dormant bolt, and the dormant bolt is located in connecting hole and screwed hole.Wear-resisting composite liner separates ceramic wearing coat and high chrome lining main body, is connected by dormant bolt, easy disassembly, replacing；Ceramic wearing coat is directly changed after abrasion, operation and maintenance cost is relatively low.Ceramic wearing coat by setting prefabricated mold insert, filling wear-resistant ceramic particle and Ti powder in die cavity, then pours into molten iron shaping, technique is simple and convenient, wear-resisting, reliable, improves service life in preparation process.
Description
Technical field
The present invention relates to liner plate manufacture field, more particularly to a kind of wear-resisting composite liner and preparation method thereof.
Background technology
In industries such as electric power, cement, metallurgy, mines, largely using abrasion-proof backing block, as the main wearing piece of coal pulverizer,
Its anti-wear performance directly influences the production efficiency and operation cost of coal pulverizer.Current research ratio both at home and abroad for abrasion-proof backing block
It is more, there is integral casting forming, have using prefabricated component produced by insert molding, continue to make after also having on worn-out casting built-up welding again
.Integral casting forming cost is very high, and the anti-wear performance of casting is not ideal enough, and service life is limited.Using prefabricated wear-resisting
What ceramic block was poured into a mould, complex procedures often cause in wear process because of first being worn and torn to the metal being connected with ceramics
Entirety is needed to scrap after the phenomenon that ceramic block bursts apart, and ceramic wearing coat abrasion, use cost is higher.Using the side of secondary built-up welding
Although method can save some costs, overlay cladding easily comes off when running into the poor working environment of ature of coal.Production maintenance and make
It is relatively high with cost.
The content of the invention
The present invention, there is provided the convenient processing of one kind, saves cost, the reliable wear-resisting composite liner of dismounting for problem above
And preparation method thereof.
The technical scheme is that：Including high chrome lining main body and ceramic wearing coat, it is provided with the ceramic wearing coat
Prefabricated mold insert, the prefabricated mold insert is provided with screwed hole, and the high chrome lining main body is provided with consistent with screw thread centerline hole
Connecting hole, the high chrome lining main body and prefabricated mold insert are connected by dormant bolt, and the dormant bolt is located at connecting hole and spiral shell
In pit.
The prefabricated mold insert is up-small and down-big stepped cylinder body, the bottom surface of the prefabricated mold insert and ceramic wearing coat
Bottom surface is concordant.
The bottom of the prefabricated mold insert is provided with some embedding bars, and the embedding bar stretches out the bottom surface of ceramic wearing coat, the Gao Ge
The top surface of liner plate main body is provided with some caulking grooves, and the embedding bar is corresponded with caulking groove, and the embedding bar is adaptedly located in caulking groove.
The prefabricated mold insert has at least two.
A kind of preparation method of wear-resisting composite liner, comprises the following steps：
1）It is prepared by ceramic wearing coat：
1.1）Using phenolic sand molding, prefabricated mold insert is placed inside die cavity, mold insert material is 45 steel；
1.2）From particle diameter 18-25mm wear-resistant ceramic particle, 0.5-1wt%Ti powder is added, is equably laid on inside die cavity,
Until filling up whole die cavity；
1.3）Sand mold is preheated to 250-300 DEG C, molten iron is heated to 1480-1530 DEG C and poured into a mould；
1.4）After sand removal polishing, ceramic wearing coat is heat-treated, its technique is：At 800-1000 DEG C of temperature, 2- is incubated
4h；Air cooling processing；At 200-250 DEG C of temperature, 3-5h is incubated；Air cooling is handled again；
1.5）The drilling thread mill drilling on prefabricated mold insert；
2）Connecting hole is reserved in high chrome lining main body；
3）High chrome lining main body and ceramic wearing coat are connected using dormant bolt；
4）Complete.
Molten iron is that C content is 2.0-3.3wt%, and Cr contents are 18-23 wt% wear resistant cast iron.
Step 1.4）Hardness is HRC55-60 after ceramic wearing coat heat treatment.
Step 1.4）Temperature after hollow cold treatment is 15-30 DEG C.
Beneficial effects of the present invention are：Wear-resisting composite liner separates ceramic wearing coat and high chrome lining main body, by heavy
Hook bolt is connected, easy disassembly, replacing；Ceramic wearing coat is directly changed after abrasion, operation and maintenance cost is relatively low.Ceramics
Wearing layer by setting prefabricated mold insert, filling wear-resistant ceramic particle and Ti powder in die cavity, then pours into molten iron in preparation process
Shaping, technique is simple and convenient, wear-resisting, reliable, improves service life.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the optimal enforcement mode of the present invention；
1 is high chrome lining main body in figure, and 2 be ceramic wearing coat, and 20 be wear-resistant ceramic particle, and 3 be prefabricated mold insert, and 4 be countersunk head spiral shell
Bolt, 5 be embedding bar.
Embodiment
Term used in the present invention is unless otherwise specified, typically logical with those of ordinary skill in the art
The implication understood.With reference to specific embodiment, the present invention is described in further detail.It should be understood that these embodiments are
In order to demonstrate the invention, rather than in any way the scope of the present invention is limited.Below in an example, it is not described in detail
Various processes and method be conventional method as known in the art.
As shown in Figure 1-2, including high chrome lining main body 1 and ceramic wearing coat 2 are provided with the ceramic wearing coat present invention
Prefabricated mold insert 3, the prefabricated mold insert is provided with screwed hole, and the high chrome lining main body is provided with consistent with screw thread centerline hole
Connecting hole, the high chrome lining main body and prefabricated mold insert are connected by dormant bolt 4, and the dormant bolt is located at connecting hole and spiral shell
In pit.
The prefabricated mold insert 3 is up-small and down-big stepped cylinder body, the bottom surface of the prefabricated mold insert and ceramic wearing coat
Bottom surface it is concordant, be easy to high chrome lining main body of fitting so that prefabricated mold insert is connected reliably with high chrome lining main body.
The bottom of the prefabricated mold insert 3 is provided with some embedding bars 5, and the embedding bar stretches out the bottom surface of ceramic wearing coat, the height
The top surface of chrome lining main body is provided with some caulking grooves, and the embedding bar is corresponded with caulking groove, and the embedding bar is adaptedly located in caulking groove；
On the one hand, for reliable location；On the other hand, both tightness are improved；Embedding bar can be set to cone, improve tightness.
The prefabricated mold insert 3 has at least two, and dormant bolt is identical with the quantity of prefabricated mold insert, improves high chrome lining master
Body and the reliability of ceramic wearing coat connection.
Opposite face between the high chrome lining main body 1 and ceramic wearing coat 2 is also connected by embedded structure, embedded structure
For：Sawtooth is respectively equipped with high chrome lining main body 1 and the opposite face of ceramic wearing coat 2, it is chimeric by sawtooth, tightness is improved, is kept away
Exempt from both to misplace.
A kind of preparation method of wear-resisting composite liner, with following examples：
Embodiment 1
1）Using phenolic sand molding, prefabricated mold insert 3 is placed as needed inside die cavity, mold insert material is 45 steel, to be convenient to
Later stage drilling screwed hole；2）From particle diameter 18mm wear-resistant ceramic particle 20,0.5wt%Ti powder is added, sand mold is uniformly laid on
Inside die cavity, until filling up whole die cavity；3）Sand mold is preheated to 250 DEG C, molten iron is heated to 1480 DEG C and poured into a mould；4）Sand removal
After polishing, ceramic wearing coat is heat-treated, Technology for Heating Processing is at 800 DEG C of temperature, to be incubated 2h；Air cooling processing；In temperature
At 200 DEG C of degree, 3h is incubated；Air cooling is handled again；5）The drilling thread mill drilling on prefabricated mold insert；6）Reserved in high chrome lining main body
Connecting hole； 7）High chrome lining main body and ceramic wearing coat are connected using dormant bolt；8）Complete.
Prefabricated mold insert 3 is up-small and down-big stepped cylinder body, improves the contact surface of prefabricated mold insert and wear-resistant ceramic particle
Product, improves the tightness of both connections.
Molten iron is that C content is 2.0-3.3wt%, and Cr contents are 18-23 wt% wear resistant cast irons.After ceramic wearing coat heat treatment
Hardness is HRC55-60.Temperature after air cooling processing is 15-30 DEG C.
Wear-resistant ceramic particle such as corundum, adds Ti powder, improves bonding strength, meanwhile, improve the wearability of ceramic wearing coat.
Polishing machine contrast is carried out to the composite liner after heat treatment and common liner plate using emery wheel, found in uniform pressure
（15kg）Lower 30min abrasions, the wear extent of composite liner is only the 33% of common wear liner amount.
Embodiment 2
1）Using phenolic sand molding, prefabricated mold insert 3 is placed as needed inside die cavity, mold insert material is 45 steel, to be convenient to
Later stage drilling screwed hole；2）From particle diameter 20mm wear-resistant ceramic particle 20,0.8wt%Ti powder is added, sand mold is uniformly laid on
Inside die cavity, until filling up whole die cavity；3）Sand mold is preheated to 275 DEG C, molten iron is heated to 1505 DEG C and poured into a mould；4）Sand removal
After polishing, ceramic wearing coat is heat-treated, Technology for Heating Processing is at 900 DEG C of temperature, to be incubated 3h；Air cooling processing；In temperature
At 220 DEG C of degree, 4h is incubated；Air cooling is handled again；5）The drilling thread mill drilling on prefabricated mold insert；6）Reserved in high chrome lining main body
Connecting hole；7）High chrome lining main body and ceramic wearing coat are connected using dormant bolt；8）Complete.
Molten iron is that C content is 2.0-3.3wt%, and Cr contents are 18-23 wt% wear resistant cast irons.After ceramic wearing coat heat treatment
Hardness is HRC55-60.Temperature after air cooling processing is 15-30 DEG C.
Polishing machine contrast is carried out to the composite liner after heat treatment and common liner plate using emery wheel, found in uniform pressure
（15kg）Lower 30min abrasions, the wear extent of composite liner is only the 35% of common wear liner amount.
Embodiment 3
Using phenolic sand molding, prefabricated mold insert with flange is placed as needed inside die cavity（1.2）, mold insert material is 45
Steel, to be convenient to later stage drilling screwed hole；2）From particle diameter 25mm wear-resistant ceramic particle 20,1wt%Ti powder is added, uniformly
It is laid on inside sand mold die cavity, until filling up whole die cavity；3）Sand mold is preheated to 300 DEG C, molten iron is heated to 1530 DEG C of progress
Cast；4）After sand removal polishing, ceramic wearing coat is heat-treated, Technology for Heating Processing is at 1000 DEG C of temperature, to be incubated 4h；It is empty
Cold treatment；At 250 DEG C of temperature, 5h is incubated；Air cooling is handled again；5）The drilling thread mill drilling on prefabricated mold insert；6）High chromium lining
Connecting hole is reserved in plate main body；7）High chrome lining main body and ceramic wearing coat are connected using dormant bolt；8）Complete.
Molten iron is that C content is 2.0-3.3wt%, and Cr contents are 18-23 wt% (i.e. mass percent) wear resistant cast iron.Ceramics
Hardness is HRC55-60 after wearing layer heat treatment.Temperature after air cooling processing is 15-30 DEG C.
Polishing machine contrast is carried out to the composite liner after heat treatment and common liner plate using emery wheel, found in uniform pressure
（15kg）Lower 30min abrasions, the wear extent of composite liner is only the 30% of common wear liner amount.
Claims (8)
1. a kind of wear-resisting composite liner, it is characterised in that：Including high chrome lining main body and ceramic wearing coat, the ceramic wearing coat
Interior to be provided with prefabricated mold insert, the prefabricated mold insert is provided with screwed hole, and the high chrome lining main body is provided with and screw thread centerline hole
Consistent connecting hole, the high chrome lining main body and prefabricated mold insert are connected by dormant bolt, and the dormant bolt is located at connection
In hole and screwed hole.
2. a kind of wear-resisting composite liner according to claim 1, it is characterised in that：The prefabricated mold insert is up-small and down-big
Stepped cylinder body, the bottom surface of the prefabricated mold insert is concordant with the bottom surface of ceramic wearing coat.
3. a kind of wear-resisting composite liner according to claim 2, it is characterised in that：If the bottom of the prefabricated mold insert is provided with
Embedding bar is done, the embedding bar stretches out the bottom surface of ceramic wearing coat, and the top surface of the high chrome lining main body is provided with some caulking grooves, described embedding
Bar is corresponded with caulking groove, and the embedding bar is adaptedly located in caulking groove.
4. a kind of wear-resisting composite liner according to claim 1, it is characterised in that：The prefabricated mold insert has at least two
It is individual.
5. the preparation method of the wear-resisting composite liner described in a kind of claim 1, it is characterised in that comprise the following steps：
1）It is prepared by ceramic wearing coat：
1.1）Using phenolic sand molding, prefabricated mold insert is placed inside die cavity, mold insert material is 45 steel；
1.2）From particle diameter 18-25mm wear-resistant ceramic particle, 0.5-1wt%Ti powder is added, is equably laid on inside die cavity,
Until filling up whole die cavity；
1.3）Sand mold is preheated to 250-300 DEG C, molten iron is heated to 1480-1530 DEG C and poured into a mould；
1.4）After sand removal polishing, ceramic wearing coat is heat-treated, its technique is：At 800-1000 DEG C of temperature, 2- is incubated
4h；Air cooling processing；At 200-250 DEG C of temperature, 3-5h is incubated；Air cooling is handled again；
1.5）The drilling thread mill drilling on prefabricated mold insert；
2）Connecting hole is reserved in high chrome lining main body；
3）High chrome lining main body and ceramic wearing coat are connected using dormant bolt；
4）Complete.
6. a kind of preparation method of wear-resisting composite liner according to claim 5, it is characterised in that：Molten iron is that C content is
2.0-3.3wt%, Cr content are 18-23 wt% wear resistant cast iron.
7. a kind of preparation method of wear-resisting composite liner according to claim 5, it is characterised in that：Step 1.4）Ceramics are resistance to
It is HRC55-60 to grind hardness after layer heat treatment.
8. a kind of preparation method of wear-resisting composite liner according to claim 5, it is characterised in that：Step 1.4）Hollow cold
Temperature after processing is 15-30 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710355112.2A CN107138241A (en) | 2017-05-19 | 2017-05-19 | A kind of wear-resisting composite liner and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710355112.2A CN107138241A (en) | 2017-05-19 | 2017-05-19 | A kind of wear-resisting composite liner and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107138241A true CN107138241A (en) | 2017-09-08 |
Family
ID=59777771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710355112.2A Pending CN107138241A (en) | 2017-05-19 | 2017-05-19 | A kind of wear-resisting composite liner and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107138241A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588091A (en) * | 2019-08-30 | 2019-12-20 | 吴葵阳 | Super wear-resistant steel-ceramic composite wear-resistant lining plate and forming method thereof |
| CN112844638A (en) * | 2020-12-31 | 2021-05-28 | 松山湖材料实验室 | Prefabricated body and preparation method thereof, and wear-resistant part and preparation method thereof |
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| CN102310183A (en) * | 2011-09-06 | 2012-01-11 | 扬州电力设备修造厂 | High wear resisting iron-based composite material and preparation method thereof |
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| CN206746715U (en) * | 2017-05-19 | 2017-12-15 | 扬州电力设备修造厂有限公司 | Wear-resisting composite liner |
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| CN201010244Y (en) * | 2006-12-27 | 2008-01-23 | 余博 | Anti-impact abrasion-proof ceramic plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588091A (en) * | 2019-08-30 | 2019-12-20 | 吴葵阳 | Super wear-resistant steel-ceramic composite wear-resistant lining plate and forming method thereof |
| CN110588091B (en) * | 2019-08-30 | 2022-05-10 | 吴葵阳 | Super wear-resistant steel-ceramic composite wear-resistant lining plate and forming method thereof |
| CN112844638A (en) * | 2020-12-31 | 2021-05-28 | 松山湖材料实验室 | Prefabricated body and preparation method thereof, and wear-resistant part and preparation method thereof |
| CN112844638B (en) * | 2020-12-31 | 2023-05-30 | 松山湖材料实验室 | Preform and preparation method thereof, and wear-resistant part and preparation method thereof |
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Application publication date: 20170908 |
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