CN113289727A - Ceramic rod set-high chromium cast iron composite board hammer - Google Patents
Ceramic rod set-high chromium cast iron composite board hammer Download PDFInfo
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- CN113289727A CN113289727A CN202110586944.1A CN202110586944A CN113289727A CN 113289727 A CN113289727 A CN 113289727A CN 202110586944 A CN202110586944 A CN 202110586944A CN 113289727 A CN113289727 A CN 113289727A
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- cast iron
- hammer
- ceramic
- plate
- ceramic rod
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- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 75
- 239000000919 ceramic Substances 0.000 title claims abstract description 73
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 40
- 239000011651 chromium Substances 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 36
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 25
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 8
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 5
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910000617 Mangalloy Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HWSFXRVYHOGTFX-UHFFFAOYSA-N [C].[Mo].[Ni].[Cr] Chemical compound [C].[Mo].[Ni].[Cr] HWSFXRVYHOGTFX-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Images
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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses a ceramic rod set-high chromium cast iron composite board hammer, wherein two sides of a working area of the board hammer comprise a plurality of sets of board hammer unit components which are symmetrically arranged; the plate hammer unit component comprises two heat-resistant cast iron plates which are arranged in parallel; an alumina ceramic bar group and a ZTA ceramic bar group are fixed between the two heat-resistant cast iron plates. The invention adopts an alumina ceramic bar group and a ZTA ceramic bar group as reinforcement bodies to be compounded with a heat-resistant cast iron plate to prepare the plate hammer of the crusher; the heat-resistant cast iron plate is used as a base material to connect the alumina ceramic rod group and the ZTA ceramic rod group and transmit and bear impact load in the service process of the plate hammer, and the alumina ceramic rod group and the ZTA ceramic rod group improve the integral wear resistance of the plate hammer; the invention has the advantages that the ceramic material has the characteristics of high hardness, good wear resistance, wide sources, low price and the like, and the composite board hammer prepared by taking the ceramic material as the reinforcement has good comprehensive performance and industrialization prospect.
Description
Technical Field
The invention relates to the technical field of plate hammers of crushers, in particular to a ceramic rod set-high-chromium cast iron composite plate hammer.
Background
Along with the development of national economy, various matched infrastructures such as road building and real estate building are continuously improved, and as the quantity of natural gravels is continuously reduced, the machine-made gravels can meet the industrial requirements and effectively improve the performance of building materials, and are widely applied to various building fields. According to statistics, the development prospect of the machine-made sand industry in a long time, at least ten years, is very considerable. The crusher plate hammer is an important component of the crusher and also a main consumption part of a crushing process link of the crusher, and the consumption of the crusher plate hammer can reach 5% -15% of the production cost of machine-made sand and stone generally. Therefore, the quality of the service performance of the plate hammer of the crusher is directly related to the working efficiency of the crusher and is also a key problem concerned by the industry.
The plate hammer rotating at high speed of the crusher under the actual working condition violently impacts materials to crush the materials, and meanwhile, the plate hammer of the crusher is also seriously abraded. At present, materials used for manufacturing the plate hammer of the crusher at home and abroad comprise different types of wear-resistant materials such as novel wear-resistant cast steel (low alloy steel, high manganese steel and high carbon chromium nickel molybdenum alloy steel) and novel high manganese steel (high chromium high wear-resistant alloy cast iron and high vanadium high wear-resistant alloy cast iron), and the casting process of the plate hammer of the crusher generally comprises the traditional integral casting and the bimetal composite forming process.
Although the crusher plate hammer adopts relatively novel wear-resistant materials and processes, the service life of the crusher plate hammer is only about 1 ten thousand tons or even lower under actual working conditions, and the service life of the crusher plate hammer with relatively excellent quality is about 2 ten thousand tons; generally, the weight of a set of plate hammers of the crusher reaches about 1.4 tons, the market price is 1.4-1.8 ten thousand, the cost of the set of plate hammers of the crusher is about 2-2.5 ten thousand in a conversion way, and the cost is relatively high. If the service life of the plate hammer of the crusher is doubled, hundreds of thousands of abrasion costs can be saved in one year, meanwhile, the time of production line interruption times caused by maintenance and replacement of the plate hammer of the crusher can be greatly saved, and the cost loss is saved.
The invention patent of CN104690231A proposes a method for enhancing the wear resistance of high-chromium cast iron by using high-hardness ceramic particles in a composite plate hammer working area, so as to improve the comprehensive wear resistance of the plate hammer, but does not consider the problem of falling off of the particle ceramic caused by different material characteristics of the particle ceramic and the high-chromium cast iron in actual working conditions; the utility model CN209333848U provides a high-chromium-based ceramic board hammer structure which comprises a first board body arranged at the top end and a second board body fixedly provided with a ceramic block and fixed by bolts, but the risk caused by insufficient strength of the bolts under the actual working condition of high impact of the first board body and the second board body is not considered; CN202860629U proposes a high-wear-resistance composite plate hammer of a rotor of a counterattack crusher, wherein a hard alloy rod with the diameter of 5-30mm is embedded on the working surface of a plate hammer body, but the hard alloy is usually very expensive and the cost burden is heavy.
Therefore, it is an urgent need to solve the problem of providing a plate hammer with high wear resistance and impact resistance and further reducing the loss cost.
Disclosure of Invention
In view of the above, the present invention provides a ceramic rod set-high chromium cast iron composite board hammer, which aims to solve the above technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a ceramic rod group-high chromium cast iron composite board hammer, wherein two sides of a working area of the board hammer comprise a plurality of groups of board hammer unit components which are symmetrically arranged;
the plate hammer unit component comprises two heat-resistant cast iron plates which are arranged in parallel; and an alumina ceramic bar group and a ZTA ceramic bar group are fixed between the two heat-resistant cast iron plates.
According to the technical scheme, the aluminum oxide ceramic rod group and the ZTA ceramic rod group are used as reinforcements and are compounded with the heat-resistant cast iron plate to prepare the plate hammer of the crusher; the heat-resistant cast iron plate is used as a base material to connect the alumina ceramic rod group and the ZTA ceramic rod group and transmit and bear impact load in the service process of the plate hammer, and the alumina ceramic rod group and the ZTA ceramic rod group improve the integral wear resistance of the plate hammer.
Preferably, in the ceramic rod set-high chromium cast iron composite plate hammer, the alumina ceramic rod set comprises a plurality of alumina ceramic rods, and the ZTA ceramic rod set comprises a plurality of ZTA ceramic rods; the diameter of the alumina ceramic rod is smaller than that of the ZTA ceramic rod.
Preferably, in the ceramic rod set-high chromium cast iron composite board hammer, a plurality of the alumina ceramic rods are connected to the end of the heat-resistant cast iron board to form three wavy lines; the plurality of ZTA ceramic rods are connected to the ends of the heat-resistant cast iron plate in a linear type, and the plurality of ZTA ceramic rods are positioned among the plurality of alumina ceramic rods.
Preferably, in the ceramic rod set-high-chromium cast iron composite board hammer, the diameter of the lower end of the alumina ceramic rod is 12mm, the drawing angle is 0.5 degrees, and the length is 110 mm; the diameter of the lower end of the ZTA ceramic rod is 22mm, the drawing angle is 0.5 degree, and the length is 110 mm.
Preferably, in the ceramic bar set-high chromium cast iron composite board hammer, the heat-resistant cast iron plate is high chromium cast iron.
Preferably, in the ceramic rod set-high chromium cast iron composite board hammer, the heat-resistant cast iron plate is provided with fixing holes for connecting the alumina ceramic rod and the ZTA ceramic rod. The dimensions of the fixing holes are 22.5mm and 12.5mm, respectively.
Preferably, in the ceramic rod set-high-chromium cast iron composite board hammer, the surface of the alumina ceramic rod is uniformly provided with a plurality of first bulges; the surface of the ZTA ceramic rod is uniformly provided with a plurality of second bulges. After gravity casting, the contact area between the cast iron and the high-chromium cast iron of the matrix is increased, and the anti-falling and fixing effects are achieved
Preferably, in the ceramic rod set-high chromium cast iron composite board hammer, the size of the heat-resistant cast iron plate is 240mm by 83mm by 2 mm.
Preferably, in the ceramic rod set-high-chromium cast iron composite plate hammer, the plate hammer unit assemblies on one side of the working area of the plate hammer are 5 sets.
Preferably, in the ceramic bar set-high chromium cast iron composite plate hammer, the heat-resistant cast iron plate opposite to the one-side end plate of the plate hammer is embedded inside the one-side end plate of the plate hammer and is flush with the plate surface of the heat-resistant cast iron plate.
The alumina ceramic, the ZTA ceramic rod and the high-chromium cast iron adopted by the invention have great difference in physical and chemical properties, and if the alumina, ZTA rod ceramic group and the high-chromium cast iron composite plate hammer are formed by forming an effective connection interface, a special process is required, so that great challenges exist in the aspects of technical difficulty and design cost. The linear expansion coefficient of ceramic materials such as alumina, ZTA and the like is greatly different from that of metal materials such as high-chromium cast iron and the like, and the joint area can generate residual stress by adopting thermal connection, so that the mechanical property of the joint is weakened. In addition, the actual service state of the plate hammer of the crusher is a high-extrusion and large-impact working condition, and the difference of the plastic toughness of the interface connection joint area under the conditions of high extrusion and high impact causes cracks to be generated, so that the plate hammer is failed. The ceramic rod provided by the invention is designed into rods with different sizes and specifications and with characteristic forms, the problem of falling-off failure of the ceramic rod in the actual working condition service process of the composite board hammer caused by low interface bonding strength and poor comprehensive performance of the ceramic rod and the high-chromium cast iron composite material is solved in a mechanical anti-falling mode, and meanwhile, the technical difficulty and the price cost of ceramic-metal compounding are greatly reduced.
According to the technical scheme, compared with the prior art, the ceramic rod set-high-chromium cast iron composite board hammer has the advantages that the ceramic material has the characteristics of high hardness, good wear resistance, wide sources, low price and the like, and the composite board hammer prepared by taking the ceramic material as the reinforcement has good comprehensive performance and industrialization prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a ceramic rod set-high chromium cast iron composite board hammer provided by the invention;
fig. 2 is a schematic structural diagram of a plate hammer unit assembly provided by the invention.
Wherein:
1-a plate hammer;
2-a plate hammer unit assembly;
21-heat resistant cast iron plate; 211-fixation holes; 22-alumina ceramic rod; 221-a first projection; 23-ZTA ceramic rod; 231-second projection.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1 and 2, the embodiment of the invention discloses a ceramic rod set-high chromium cast iron composite board hammer, wherein two sides of a working area of the board hammer 1 comprise a plurality of sets of board hammer unit assemblies 2 which are symmetrically arranged;
the plate hammer unit assembly 2 comprises two heat-resistant cast iron plates 21 arranged in parallel; an alumina ceramic bar group and a ZTA ceramic bar group are fixed between the two heat-resistant cast iron plates 21.
In order to further optimize the technical scheme, the alumina ceramic rod group comprises a plurality of alumina ceramic rods 22, and the ZTA ceramic rod group comprises a plurality of ZTA ceramic rods 23; the diameter of the alumina ceramic rod 22 is smaller than the diameter of the ZTA ceramic rod 23.
In order to further optimize the technical scheme, a plurality of alumina ceramic rods 22 are connected to the end of the heat-resistant cast iron plate 21 to form three wavy lines; the plurality of ZTA ceramic rods 23 are connected to the end of the heat-resistant cast iron plate 21 in a linear type, and the plurality of ZTA ceramic rods 23 are positioned among the plurality of alumina ceramic rods 22.
In order to further optimize the technical scheme, the diameter of the lower end of the alumina ceramic rod 22 is 12mm, the drawing angle is 0.5 degrees, and the length is 110 mm; the diameter of the lower end of the ZTA ceramic rod 23 is 22mm, the drawing angle is 0.5 degree, and the length is 110 mm.
In order to further optimize the above solution, the heat-resistant cast iron plate 21 is a high-chromium cast iron.
In order to further optimize the technical scheme, the heat-resistant cast iron plate 21 is provided with a fixing hole 211 for connecting the alumina ceramic rod 22 and the ZTA ceramic rod 23.
In order to further optimize the above technical solution, the surface of the alumina ceramic rod 22 is uniformly provided with a plurality of first protrusions 221; the surface of the ZTA ceramic rod 23 is uniformly provided with a plurality of second protrusions 231.
In order to further optimize the above solution, the dimensions of the heat-resistant cast iron plates 21 are 240mm 83mm 2 mm.
In order to further optimize the technical scheme, the number of the plate hammer unit assemblies 2 on one side of the working area of the plate hammer 1 is 5 groups.
In order to further optimize the technical scheme, the heat-resistant cast iron plate 21 opposite to the single-side end plate of the plate hammer 1 is embedded inside the single-side end plate of the plate hammer 1 and is flush with the plate surface of the heat-resistant cast iron plate 21.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The ceramic rod group-high-chromium cast iron composite board hammer is characterized in that two sides of a working area of a board hammer (1) comprise a plurality of groups of board hammer unit components (2) which are symmetrically arranged;
the plate hammer unit component (2) comprises two heat-resistant cast iron plates (21) which are arranged in parallel; an alumina ceramic bar group and a ZTA ceramic bar group are fixed between the two heat-resistant cast iron plates (21).
2. A ceramic rod set-high chromium cast iron composite board hammer as claimed in claim 1, wherein said alumina ceramic rod set includes a plurality of alumina ceramic rods (22), said ZTA ceramic rod set includes a plurality of ZTA ceramic rods (23); the diameter of the alumina ceramic rod (22) is smaller than the diameter of the ZTA ceramic rod (23).
3. The ceramic rod set-high chromium cast iron composite board hammer as claimed in claim 2, wherein a plurality of said alumina ceramic rods (22) are connected to the ends of said heat-resistant cast iron plate (21) in a three-wave line pattern; the plurality of ZTA ceramic rods (23) are connected to the end of the heat-resistant cast iron plate (21) in a linear type, and the plurality of ZTA ceramic rods (23) are positioned among the plurality of alumina ceramic rods (22).
4. A ceramic rod set-high chromium cast iron composite board hammer as claimed in claim 2, wherein the lower end of the alumina ceramic rod (22) has a diameter of 12mm, a draft angle of 0.5 ° and a length of 110 mm; the diameter of the lower end of the ZTA ceramic rod (23) is 22mm, the drawing angle is 0.5 degrees, and the length is 110 mm.
5. The ceramic bar set-high chromium cast iron composite board hammer as claimed in claim 2, wherein the heat-resistant cast iron plate (21) is high chromium cast iron.
6. The composite plate hammer of ceramic rod set and high chromium cast iron as claimed in claim 2, wherein the heat-resistant cast iron plate (21) is provided with fixing holes (211) for connecting the alumina ceramic rods (22) and the ZTA ceramic rods (23).
7. A ceramic rod set-high chromium cast iron composite board hammer as claimed in claim 2, wherein the surface of the alumina ceramic rod (22) is uniformly provided with a plurality of first protrusions (221); the surface of the ZTA ceramic rod (23) is uniformly provided with a plurality of second bulges (231).
8. A ceramic bar set-high chromium cast iron composite board hammer as set forth in claim 1, characterized in that the size of the heat-resistant cast iron plate (21) is 240mm 83mm 2 mm.
9. A ceramic bar set-high chromium cast iron composite plate hammer as claimed in claim 1, wherein the number of the plate hammer unit assemblies (2) on one side of the working area of the plate hammer (1) is 5 sets.
10. A ceramic bar set-high chromium cast iron composite board hammer as set forth in claim 1, characterized in that the heat-resistant cast iron plates (21) opposite the one-side end plates of the board hammer (1) are embedded inside the one-side end plates of the board hammer (1) and are flush with the plate surfaces of the heat-resistant cast iron plates (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110586944.1A CN113289727A (en) | 2021-05-27 | 2021-05-27 | Ceramic rod set-high chromium cast iron composite board hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110586944.1A CN113289727A (en) | 2021-05-27 | 2021-05-27 | Ceramic rod set-high chromium cast iron composite board hammer |
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| Publication Number | Publication Date |
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| CN113289727A true CN113289727A (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110586944.1A Pending CN113289727A (en) | 2021-05-27 | 2021-05-27 | Ceramic rod set-high chromium cast iron composite board hammer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570483A (en) * | 2022-02-08 | 2022-06-03 | 徐州徐工矿业机械有限公司 | Martensite/bainite steel base ZTA ceramic composite material impact crusher plate hammer and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204485946U (en) * | 2015-01-22 | 2015-07-22 | 北京金煤创业进出口有限公司 | Honeycomb ZTA Ceramic Composite rich chromium cast iron grinds bottom structure |
| RU2563696C1 (en) * | 2014-07-03 | 2015-09-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Алтайский государственный аграрный университет" (ФГБОУ ВПО АГАУ) | Method of production of plate hammer of feed grinder |
| CN105107576A (en) * | 2015-09-18 | 2015-12-02 | 中建材（合肥）水泥通用设备科技有限公司 | Impact crusher plate hammer and manufacturing method thereof |
| CN106392061A (en) * | 2016-10-13 | 2017-02-15 | 广州番禺职业技术学院 | Ceramic particle reinforced wear-resisting insert and manufacturing method thereof |
| CN215429360U (en) * | 2021-05-27 | 2022-01-07 | 国千科技集团有限公司 | Ceramic rod set-high chromium cast iron composite board hammer |
-
2021
- 2021-05-27 CN CN202110586944.1A patent/CN113289727A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2563696C1 (en) * | 2014-07-03 | 2015-09-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Алтайский государственный аграрный университет" (ФГБОУ ВПО АГАУ) | Method of production of plate hammer of feed grinder |
| CN204485946U (en) * | 2015-01-22 | 2015-07-22 | 北京金煤创业进出口有限公司 | Honeycomb ZTA Ceramic Composite rich chromium cast iron grinds bottom structure |
| CN105107576A (en) * | 2015-09-18 | 2015-12-02 | 中建材（合肥）水泥通用设备科技有限公司 | Impact crusher plate hammer and manufacturing method thereof |
| CN106392061A (en) * | 2016-10-13 | 2017-02-15 | 广州番禺职业技术学院 | Ceramic particle reinforced wear-resisting insert and manufacturing method thereof |
| CN215429360U (en) * | 2021-05-27 | 2022-01-07 | 国千科技集团有限公司 | Ceramic rod set-high chromium cast iron composite board hammer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570483A (en) * | 2022-02-08 | 2022-06-03 | 徐州徐工矿业机械有限公司 | Martensite/bainite steel base ZTA ceramic composite material impact crusher plate hammer and manufacturing method thereof |
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