CN106244939A - A kind of abrasion-proof backing block and preparation method thereof - Google Patents
A kind of abrasion-proof backing block and preparation method thereof Download PDFInfo
- Publication number
- CN106244939A CN106244939A CN201610736212.5A CN201610736212A CN106244939A CN 106244939 A CN106244939 A CN 106244939A CN 201610736212 A CN201610736212 A CN 201610736212A CN 106244939 A CN106244939 A CN 106244939A
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- Prior art keywords
- abrasion
- ceramal
- backing block
- metallic matrix
- proof backing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/04—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one layer
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a kind of abrasion-proof backing block and manufacture method thereof, abrasion-proof backing block is made up of two-layer composite, and outer layer is metallic matrix, and internal layer is ceramal, and metallic matrix includes following components: C；Si；Mn；Cr；Mo；Ni；Cu；La；Re；S；P；Fe；Ceramal includes following components: aluminum oxide ceramic granule；Silicon carbide ceramics granule；Iron powder；Graphite；Silane coupler；Binding agent；Auxiliary agent.Production cost of the present invention is low, toughness is high, and wearability is good, and service life is the longest, while improving wearability, impact toughness is also greatly improved, and meets the impact resistance of large-sized grinder liner plate, decreases factory and changes the frequency of liner plate, reduce labor intensity, raw material of the present invention is easy to get, and manufacture method is simple, is effectively saved the energy.
Description
Technical field
The present invention relates to a kind of liner plate, be specifically related to a kind of abrasion-proof backing block and preparation method thereof.
Background technology
The bulk cargos such as industrial iron ore, sintering deposit, coke, coal, limestone are serious due to abrasive wear, corresponding broken
Broken, sieve, carry, store, need to use abrasion-proof backing block (also referred to as lining), with the use longevity of extension device on conveying equipment
Life, such as, store material and use feed bin liner plate, conveying material to use chute, pipeline, truck liner plate etc..People are initially use resistance to
Mill iron casting liner plate, but anti-wear performance is poor；People used hard alloy overlay welding wearing layer or brazing hard alloy resistance to later
The method of abrading block makes abrasion-proof backing block, although wearability has obtained certain raising, but, hard alloy overlay welding wearing layer anti-impact
Hitting property and resistance to elevated temperatures are poor；Brazing hard alloy wear-resistant block consumes non-ferrous metal-copper, and cost is high.Further, since soldering hard
There is a plurality of laterally consecutive soft ribbons in the backing surface of alloy wearable block, when material is laterally moved, continuous soft ribbons is easy to
It is worn, affects the service life of whole abrasion-proof backing block.
Summary of the invention
For solving the problems referred to above, the invention discloses a kind of abrasion-proof backing block and preparation method thereof.
In order to reach object above, the present invention provides following technical scheme:
A kind of abrasion-proof backing block, abrasion-proof backing block is made up of two-layer composite, and outer layer is metallic matrix, and internal layer is ceramal,
Described metallic matrix includes the component of following mass percent: C 2.0～3.3%；Si 0.8～1.2%；Mn 0.8～
2.0%；Cr 14～30%；Mo 0.15～3.0%；Ni 1.2～2.5%；Cu 0.8～2.0%；La 0.01～0.05%；Re
0.05～0.12%；S≤0.06%；P≤0.1%；Surplus is Fe；
Described ceramal includes the component of following mass fraction: aluminum oxide ceramic granule 10～25 parts；Silicon carbide ceramics
Granule 15～30 parts；Iron powder 30～60 parts；Graphite 1～3 parts；Silane coupler 1～3 parts；Binding agent 5～10 parts；Auxiliary agent 0.8～
2.5 part.
As preferably, described auxiliary agent is one or more in ethanol, zinc stearate, lithium stearate or synthetic wax.
As preferably, described binding agent is epoxy resin or phenolic resin.
The preparation method of above-mentioned abrasion-proof backing block, comprises the following steps:
(1) preparation of metallic matrix
(1.1) according to chemical constituent and the proportions raw material of metallic matrix, the raw material prepared is put into electric furnace melting, warp
Deoxidation treatment, comes out of the stove to 1550～1650 DEG C, obtains molten iron；
(1.2) injecting in ingot mould by molten iron, pouring temperature is 1400～1450 DEG C；
(1.3) when cast(ing) surface temperature is less than 600 DEG C, the demoulding, after foundry goods is cooled to room temperature, carry out at the beginning of surface quality
Inspection；
(1.4) foundry goods obtaining step (1.3) carries out heat treatment, foundry goods is put into muffle electric furnace and is heated to 800～900 DEG C, protects
Temperature 1～2 hour, temperature is down to when 700～800 DEG C come out of the stove, and carries out Quenching Treatment with water-based hardening liquid, then at 200～250 DEG C
It is tempered 5～7 hours, cooling of coming out of the stove, obtains metallic matrix；
(2) preparation of ceramal prefabricated component
(2.1) according to the ratio of each component of ceramal, aluminum oxide ceramic granule, silicon carbide ceramics granule, iron powder, stone are taken
Mix homogeneously in container put into by ink, silane coupler, binding agent, auxiliary agent, obtains mixture；
(2.2) pour the mixed material that step (2.1) obtains into mould molding, obtain just type prefabricated component；
(2.3) first type prefabricated component is put into atmosphere furnace sintering, and sintering temperature is 1100～1250 DEG C, and sintering time is 20
～50 minutes, obtain ceramal prefabricated component after cooling；
(3) preparation of abrasion-proof backing block
(3.1) respectively metallic matrix and ceramal prefabricated component are carried out removing surface；
(3.2) ceramal prefabricated component is welded on metallic matrix, obtains abrasion-proof backing block.
What the present invention obtained has the beneficial effect that
Abrasion-proof backing block in the present invention is made up of metal collective and ceramal, has a dual anti-wear performance, and ceramal with
Fix by the way of welding between metallic matrix, after ceramal layer weares and teares, the ceramal layer of abrasion can be pulled down, change
Upper new ceramal prefabricated component, the problem solving liner plate unrepairable, thus reduce production cost.The present invention produces into
This is low, and toughness is high, and wearability is good, and service life is the longest, and while improving wearability, impact toughness is also greatly improved, and meets
The impact resistance of large-sized grinder liner plate, decreases factory and changes the frequency of liner plate, reduce labor intensity, and raw material of the present invention is easy
, manufacture method is simple, is effectively saved the energy.
Detailed description of the invention
Below in conjunction with detailed description of the invention, it is further elucidated with the present invention, it should be understood that following detailed description of the invention is only used for
The bright present invention rather than restriction the scope of the present invention.
Embodiment 1
A kind of abrasion-proof backing block, abrasion-proof backing block is made up of two-layer composite, and outer layer is metallic matrix, and internal layer is ceramal,
Metallic matrix includes the component of following mass percent: C 3.3%；Si 1.2%；Mn 0.8%；Cr 14%；Mo 3.0%；Ni
2.5%；Cu 2.0%；La 0.05%；Re 0.05%；S≤0.06%；P≤0.1%；Surplus is Fe；
Ceramal includes the component of following mass fraction: aluminum oxide ceramic granule 10 parts；Silicon carbide ceramics granule 30 parts；
Iron powder 60 parts；3 parts of graphite；Silane coupler 1 part；Epoxy resin 10 parts；Zinc stearate 2.5 parts.
The preparation method of above-mentioned abrasion-proof backing block, comprises the following steps:
(1) preparation of metallic matrix
(1.1) according to chemical constituent and the proportions raw material of metallic matrix, the raw material prepared is put into electric furnace melting, warp
Deoxidation treatment, comes out of the stove to 1550 DEG C, obtains molten iron；
(1.2) injecting in ingot mould by molten iron, pouring temperature is 1400 DEG C；
(1.3) when cast(ing) surface temperature is less than 600 DEG C, the demoulding, after foundry goods is cooled to room temperature, carry out at the beginning of surface quality
Inspection；
(1.4) foundry goods obtaining step (1.3) carries out heat treatment, foundry goods is put into muffle electric furnace and is heated to 800 DEG C, and insulation 2 is little
Time, temperature is down to when 700 DEG C come out of the stove, and carries out Quenching Treatment with water-based hardening liquid, then is tempered 7 hours at 200 DEG C, comes out of the stove cold
But, metallic matrix is obtained；
(2) preparation of ceramal prefabricated component
(2.1) according to the ratio of each component of ceramal, aluminum oxide ceramic granule, silicon carbide ceramics granule, iron powder, stone are taken
Mix homogeneously in container put into by ink, silane coupler, binding agent, auxiliary agent, obtains mixture；
(2.2) pour the mixed material that step (2.1) obtains into mould molding, obtain just type prefabricated component；
(2.3) first type prefabricated component is put into atmosphere furnace sintering, and sintering temperature is 1250 DEG C, and sintering time is 20 minutes,
Ceramal prefabricated component is obtained after cooling；
(3) preparation of abrasion-proof backing block
(3.1) respectively metallic matrix and ceramal prefabricated component are carried out removing surface；
(3.2) ceramal prefabricated component is welded on metallic matrix, obtains abrasion-proof backing block.
Embodiment 2
A kind of abrasion-proof backing block, abrasion-proof backing block is made up of two-layer composite, and outer layer is metallic matrix, and internal layer is ceramal,
Metallic matrix includes the component of following mass percent: C 2.0%；Si 0.8%；Mn 2.0%；Cr 30%；Mo 0.15%；
Ni 1.2%；Cu 0.8%；La 0.01%；Re 0.12%；S≤0.06%；P≤0.1%；Surplus is Fe；
Ceramal includes the component of following mass fraction: aluminum oxide ceramic granule 25 parts；Silicon carbide ceramics granule 15 parts；
Iron powder 30 parts；1 part of graphite；Silane coupler 3 parts；5 parts of phenolic resin；Lithium stearate 0.8 part.
The preparation method of above-mentioned abrasion-proof backing block, comprises the following steps:
(1) preparation of metallic matrix
(1.1) according to chemical constituent and the proportions raw material of metallic matrix, the raw material prepared is put into electric furnace melting, warp
Deoxidation treatment, comes out of the stove to 1650 DEG C, obtains molten iron；
(1.2) injecting in ingot mould by molten iron, pouring temperature is 1450 DEG C；
(1.3) when cast(ing) surface temperature is less than 600 DEG C, the demoulding, after foundry goods is cooled to room temperature, carry out at the beginning of surface quality
Inspection；
(1.4) foundry goods obtaining step (1.3) carries out heat treatment, foundry goods is put into muffle electric furnace and is heated to 900 DEG C, and insulation 1 is little
Time, temperature is down to when 800 DEG C come out of the stove, and carries out Quenching Treatment with water-based hardening liquid, then is tempered 5 hours at 250 DEG C, comes out of the stove cold
But, metallic matrix is obtained；
(2) preparation of ceramal prefabricated component
(2.1) according to the ratio of each component of ceramal, aluminum oxide ceramic granule, silicon carbide ceramics granule, iron powder, stone are taken
Mix homogeneously in container put into by ink, silane coupler, binding agent, auxiliary agent, obtains mixture；
(2.2) pour the mixed material that step (2.1) obtains into mould molding, obtain just type prefabricated component；
(2.3) first type prefabricated component is put into atmosphere furnace sintering, and sintering temperature is 1100 DEG C, and sintering time is 50 minutes,
Ceramal prefabricated component is obtained after cooling；
(3) preparation of abrasion-proof backing block
(3.1) respectively metallic matrix and ceramal prefabricated component are carried out removing surface；
(3.2) ceramal prefabricated component is welded on metallic matrix, obtains abrasion-proof backing block.
Embodiment 3
A kind of abrasion-proof backing block, abrasion-proof backing block is made up of two-layer composite, and outer layer is metallic matrix, and internal layer is ceramal,
Metallic matrix includes the component of following mass percent: C 2.8%；Si 1.0%；Mn 1.4%；Cr 20%；Mo 0.23%；
Ni 1.8%；Cu 1.5%；La 0.03%；Re 0.09%；S≤0.06%；P≤0.1%；Surplus is Fe；
Ceramal includes the component of following mass fraction: aluminum oxide ceramic granule 18 parts；Silicon carbide ceramics granule 24 parts；
Iron powder 45 parts；2 parts of graphite；Silane coupler 2 parts；Epoxy resin 8 parts；Ethanol 1.8 parts.
The preparation method of above-mentioned abrasion-proof backing block, comprises the following steps:
(1) preparation of metallic matrix
(1.1) according to chemical constituent and the proportions raw material of metallic matrix, the raw material prepared is put into electric furnace melting, warp
Deoxidation treatment, comes out of the stove to 1600 DEG C, obtains molten iron；
(1.2) injecting in ingot mould by molten iron, pouring temperature is 1430 DEG C；
(1.3) when cast(ing) surface temperature is less than 600 DEG C, the demoulding, after foundry goods is cooled to room temperature, carry out at the beginning of surface quality
Inspection；
(1.4) foundry goods obtaining step (1.3) carries out heat treatment, foundry goods is put into muffle electric furnace and is heated to 850 DEG C, is incubated 1.5
Hour, temperature is down to when 750 DEG C come out of the stove, and carries out Quenching Treatment with water-based hardening liquid, then is tempered 6 hours at 220 DEG C, comes out of the stove cold
But, metallic matrix is obtained；
(2) preparation of ceramal prefabricated component
(2.1) according to the ratio of each component of ceramal, aluminum oxide ceramic granule, silicon carbide ceramics granule, iron powder, stone are taken
Mix homogeneously in container put into by ink, silane coupler, binding agent, auxiliary agent, obtains mixture；
(2.2) pour the mixed material that step (2.1) obtains into mould molding, obtain just type prefabricated component；
(2.3) first type prefabricated component is put into atmosphere furnace sintering, and sintering temperature is 1180 DEG C, and sintering time is 40 minutes,
Ceramal prefabricated component is obtained after cooling；
(3) preparation of abrasion-proof backing block
(3.1) respectively metallic matrix and ceramal prefabricated component are carried out removing surface；
(3.2) ceramal prefabricated component is welded on metallic matrix, obtains abrasion-proof backing block.
After tested, the physical and mechanical properties of the composite pipe with ceramic lining that embodiment 1-3 prepares is as shown in table 1:
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, also include by with
The technical scheme that upper technical characteristic combination in any is formed.It should be pointed out that, for those skilled in the art,
Under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also considered as this
Bright protection domain.
Claims (4)
1. an abrasion-proof backing block, it is characterised in that abrasion-proof backing block is made up of two-layer composite, outer layer is metallic matrix, internal layer
For ceramal,
Described metallic matrix includes the component of following mass percent: C 2.0～3.3%；Si 0.8～1.2%；Mn 0.8～
2.0%；Cr 14～30%；Mo 0.15～3.0%；Ni 1.2～2.5%；Cu 0.8～2.0%；La 0.01～0.05%；Re
0.05～0.12%；S≤0.06%；P≤0.1%；Surplus is Fe；
Described ceramal includes the component of following mass fraction: aluminum oxide ceramic granule 10～25 parts；Silicon carbide ceramics
Granule 15～30 parts；Iron powder 30～60 parts；Graphite 1～3 parts；Silane coupler 1～3 parts；Binding agent 5～10 parts；Auxiliary agent 0.8～
2.5 part.
2. abrasion-proof backing block as claimed in claim 1, it is characterised in that described auxiliary agent be ethanol, zinc stearate, lithium stearate or
One or more in synthetic wax.
3. abrasion-proof backing block as claimed in claim 1, it is characterised in that described binding agent is epoxy resin or phenolic resin.
4. according to the preparation method of the abrasion-proof backing block described in claims 1 to 3 any one, it is characterised in that include following step
Rapid:
(1) preparation of metallic matrix
(1.1) according to chemical constituent and the proportions raw material of metallic matrix, the raw material prepared is put into electric furnace melting, warp
Deoxidation treatment, comes out of the stove to 1550～1650 DEG C, obtains molten iron；
(1.2) injecting in ingot mould by molten iron, pouring temperature is 1400～1450 DEG C；
(1.3) when cast(ing) surface temperature is less than 600 DEG C, the demoulding, after foundry goods is cooled to room temperature, carry out at the beginning of surface quality
Inspection；
(1.4) foundry goods obtaining step (1.3) carries out heat treatment, foundry goods is put into muffle electric furnace and is heated to 800～900 DEG C, protects
Temperature 1～2 hour, temperature is down to when 700～800 DEG C come out of the stove, and carries out Quenching Treatment with water-based hardening liquid, then at 200～250 DEG C
It is tempered 5～7 hours, cooling of coming out of the stove, obtains metallic matrix；
(2) preparation of ceramal prefabricated component
(2.1) according to the ratio of each component of ceramal, aluminum oxide ceramic granule, silicon carbide ceramics granule, iron powder, stone are taken
Mix homogeneously in container put into by ink, silane coupler, binding agent, auxiliary agent, obtains mixture；
(2.2) pour the mixed material that step (2.1) obtains into mould molding, obtain just type prefabricated component；
(2.3) first type prefabricated component is put into atmosphere furnace sintering, and sintering temperature is 1100～1250 DEG C, and sintering time is 20
～50 points
Clock, obtains ceramal prefabricated component after cooling；
(3) preparation of abrasion-proof backing block
(3.1) respectively metallic matrix and ceramal prefabricated component are carried out removing surface；
(3.2) ceramal prefabricated component is welded on metallic matrix, obtains abrasion-proof backing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736212.5A CN106244939B (en) | 2016-08-26 | 2016-08-26 | A kind of wear-resistant liner and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736212.5A CN106244939B (en) | 2016-08-26 | 2016-08-26 | A kind of wear-resistant liner and preparation method thereof |
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| CN106244939A true CN106244939A (en) | 2016-12-21 |
| CN106244939B CN106244939B (en) | 2018-09-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323023A (en) * | 2017-06-29 | 2017-11-07 | 扬中市第蝶阀厂有限公司 | A kind of coal bunker composite liner and preparation method thereof |
| CN114378261A (en) * | 2022-02-24 | 2022-04-22 | 德清县东旭合金钢铸造有限公司 | Casting process of bimetal alloy steel plate |
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| JP2001159496A (en) * | 1999-11-30 | 2001-06-12 | Kyocera Corp | Ceramic liner member and ceramic liner pipe using the same |
| CN103993218A (en) * | 2014-04-23 | 2014-08-20 | 中建材宁国新马耐磨材料有限公司 | Large mill high-chromium cast iron trench lining board and making method thereof |
| CN105081327A (en) * | 2015-08-28 | 2015-11-25 | 南通高欣耐磨科技股份有限公司 | High-strength and shock-resistance type metal ceramic composite lining plate and preparation method thereof |
| CN105149875A (en) * | 2015-08-28 | 2015-12-16 | 南通高欣耐磨科技股份有限公司 | Method for manufacturing low-cost and high-wear-resistance ceramal composite liner plate |
-
2016
- 2016-08-26 CN CN201610736212.5A patent/CN106244939B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001159496A (en) * | 1999-11-30 | 2001-06-12 | Kyocera Corp | Ceramic liner member and ceramic liner pipe using the same |
| CN103993218A (en) * | 2014-04-23 | 2014-08-20 | 中建材宁国新马耐磨材料有限公司 | Large mill high-chromium cast iron trench lining board and making method thereof |
| CN105081327A (en) * | 2015-08-28 | 2015-11-25 | 南通高欣耐磨科技股份有限公司 | High-strength and shock-resistance type metal ceramic composite lining plate and preparation method thereof |
| CN105149875A (en) * | 2015-08-28 | 2015-12-16 | 南通高欣耐磨科技股份有限公司 | Method for manufacturing low-cost and high-wear-resistance ceramal composite liner plate |
Non-Patent Citations (1)
| Title |
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| "《中国水泥装备制造、安装、维护与修理》" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323023A (en) * | 2017-06-29 | 2017-11-07 | 扬中市第蝶阀厂有限公司 | A kind of coal bunker composite liner and preparation method thereof |
| CN114378261A (en) * | 2022-02-24 | 2022-04-22 | 德清县东旭合金钢铸造有限公司 | Casting process of bimetal alloy steel plate |
| CN114378261B (en) * | 2022-02-24 | 2023-12-05 | 德清县东旭合金钢铸造有限公司 | Casting process of bimetal alloy steel plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106244939B (en) | 2018-09-21 |
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