CN115646600B - An assembled wear-resistant hammer head and a preparation method thereof - Google Patents
An assembled wear-resistant hammer head and a preparation method thereof Download PDFInfo
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- CN115646600B CN115646600B CN202211243470.1A CN202211243470A CN115646600B CN 115646600 B CN115646600 B CN 115646600B CN 202211243470 A CN202211243470 A CN 202211243470A CN 115646600 B CN115646600 B CN 115646600B
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Abstract
本发明公开了一种组装式耐磨锤头及其制备方法，组装式耐磨锤头包括锤柄、压紧块、硬质合金棒，所述硬质合金棒包括多个，且均安装在所述压紧块的沉孔中，所述压紧块整体与所述锤柄底部固定连接，所述硬质合金棒为真空烧结而成的刚结硬质合金，所述硬质合金棒一侧端面设有凸台；所述硬质合金棒中的成分为：TiC：88~90wt.%、B2C:1~1.5wt.%、余量为Fe‑Ni合金，其中Ni含量为12wt.%。
The invention discloses an assembled wear-resistant hammer head and a preparation method thereof. The assembled wear-resistant hammer head comprises a hammer handle, a pressing block and a cemented carbide rod. The cemented carbide rod comprises a plurality of cemented carbide rods, which are all installed in countersunk holes of the pressing block. The pressing block is fixedly connected to the bottom of the hammer handle as a whole. The cemented carbide rod is a rigid cemented carbide formed by vacuum sintering. A boss is arranged on one end surface of the cemented carbide rod. The cemented carbide rod comprises the following components: TiC: 88-90wt.%, B2C : 1-1.5wt.%, and the remainder is Fe-Ni alloy, wherein the Ni content is 12wt.%.
Description
Technical Field
The invention relates to a wear-resistant hammer head, in particular to an assembled wear-resistant hammer head and a preparation method thereof.
Background
The crusher hammer is a wear-resistant structural material used under the working condition of contact friction and wear for receiving strong impact hard materials. The method is a quick-wear part with high wear and consumption, and various materials and methods for manufacturing the composite hammer head are appeared because of frequent and troublesome hammer replacement, but the method for manufacturing the composite wear-resistant hammer head by using the high Wen Xiangzhu hard alloy is not seen.
The hammer materials used in the present crusher industry are mainly high manganese steel, high chromium cast iron, low alloy wear-resistant steel and the like. The high manganese steel hammer has good toughness, is not easy to break in the hammering and impacting process, has a work hardening effect, but has low hardness and extremely poor wear resistance. In order to improve the wear resistance and prolong the service life, steel bonded hard alloy bars or blocks and other hard materials are embedded on the working surface of the hammer head to form a composite wear-resistant piece. The method comprises the steps of prefabricating the hammer handle, prefabricating the cast alloy in the hammer handle and the hammer head, and casting the molten steel of the hammer head into the composite hammer head. In these casting methods, the cavity is not limited to a sand mold, a resin sand mold, a lost foam, and the like. The advantage of these mould cavities is that it is convenient to pre-embed alloy bars or blocks and hammer handles, but its casting quality is difficult to guarantee. Because it belongs to the chill casting, when factors such as molten steel temperature and pouring speed are unmatched, cold alloy stick or hammer handle just is equivalent to molten steel nucleation's crystal nucleus, makes molten steel quick condensation and crystallization, obstructs molten steel flow, appears hole and cold shut around alloy stick or hammer handle, leads to the foundry goods to scrap. If the defect is invisible to the inner eye, when the matrix of the hammer head is worn in the running process, the hard alloy block or the hammer handle can fall off, so that the service life is influenced, the user is also greatly lost, the crusher is damaged, the shutdown is caused, and the loss of customers is also common.
The hammer head is used as a vulnerable component of the impact crusher, and the wear resistance and the service life of the hammer head directly determine the crushing efficiency and the economic benefit of the crusher. At present, most hammerheads are made of high-chromium cast iron, high-manganese steel and other materials, but the hammerheads have the defects of short service life, insufficient wear resistance and the like, and particularly the hammerheads prepared from pure high-chromium cast iron materials have the danger of fracture under high impact load due to brittleness of the hammerheads. So that the crushing quality of the crusher is lowered, thereby indirectly causing an increase in cost.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provide an assembled wear-resistant hammer and a preparation method thereof.
The assembled wear-resistant hammer comprises a hammer handle, a compression block and hard alloy rods, wherein the hard alloy rods comprise a plurality of counter bores and are all arranged in the compression block, the whole compression block is fixedly connected with the hammer handle, the hard alloy rods are rigid hard alloy formed by vacuum sintering, and a boss is arranged on one side end face of each hard alloy rod;
The hard alloy rod comprises 88-90 wt.% of TiC, 1-1.5 wt.% of B 2 C and the balance of Fe-Ni alloy, wherein the Ni content is 12wt.%.
Further, the section of the hard alloy rod is circular, and the diameter of the hard alloy rod is 10-15 mm.
Further, the compacting block adopts a U-shaped structure, the shape of the compacting block is consistent with the bottom of the hammer handle, and a plurality of counter bores are formed in the compacting block and are used for installing the hard alloy rod.
Furthermore, the compaction block is made of high-chromium cast iron.
Further, the ratio of the diameter of the hard alloy rod to the wall thickness of the grid metal matrix processed by the compaction block is 3:1-1.5:1.
Furthermore, the hard alloy rod and the compaction block are in transition fit.
Further, the whole compressing block is fixedly connected with the bottom of the hammer handle through a fixing screw.
The invention also discloses a preparation method of the assembled wear-resistant hammer head, which comprises the following steps:
Preparing a hard alloy rod by a vacuum sintering process, namely preparing the hard alloy rod, weighing powder with the weight, wherein the particle size of the powder is 1200 meshes, wet-milling the powder for 4-5 hours by using a planetary ball mill at the rotating speed of 120-150 r/min, heating the sintered powder to 300 ℃ at 50 DEG/h, preserving heat for 1.5 hours, heating the sintered powder to 720 ℃ at 30 DEG/h, preserving heat for 2 hours, heating the sintered powder to 1100 ℃ at 30 DEG/h, preserving heat for 2.5 hours, heating the sintered powder to 1350 ℃ at 20 DEG/h, preserving heat for 1 hour, cooling the sintered powder to 830 ℃ at 25 DEG/h, preserving heat for 1.5 hours, and cooling the sintered powder to room temperature along with a furnace;
the hammer handle is prepared by sand casting or lost foam casting by using common low-carbon steel;
The concrete assembly operation is as follows:
(1) Heating the compaction block to 200-250 ℃, and then sequentially inserting the hard alloy rods into the holes at the temperature;
(2) And then the assembly body of the compression block and the hard alloy rod is installed along the groove slideway of the hammer handle and is fixed by using bolts.
The beneficial effects of the invention are as follows:
(1) B 2 C in the hard alloy rod plays a role of pinning in the hard alloy, is uniformly dispersed among TiC particles on one hand, increases the toughness of the whole hard alloy, and is fused with Fe-Ni alloy at high temperature on the other hand, and increases the hardness and wear resistance of a bonding phase;
(2) The diameter of the hard alloy rod and the wall thickness of the grid metal matrix processed by the compaction block are reasonably distributed, and the impact-resistant hard alloy rod can be used as a main wear-resistant medium in the impact direction, has strong impact resistance and is not easy to break;
(2) The boss is arranged on the end face of one side of the hard alloy rod, and has the advantages that the hard alloy rod is prevented from falling off under the repeated vibration action, the contact area of the hard alloy and the hammer handle is increased, and the stress generated by material impact is dispersed;
(3) The preparation process can save the cost, improve the overall impact resistance of the hammer head, and avoid the breakage of the hammer head caused by material impact and influence on production and use;
(4) The TiC hard alloy is used as a main wear-resistant medium, so that the hammerhead and the wear resistance are improved, and the service life is prolonged;
(5) The invention increases the integral impact resistance of the hammer head and prevents the hammer head from breaking in the using process;
(6) The invention is convenient to assemble and disassemble, saves cost, reduces energy consumption of production enterprises and achieves the purposes of energy conservation and emission reduction.
Drawings
FIG. 1 is a cross-sectional view of one embodiment of the present invention;
fig. 2 is a side view of fig. 1.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. are the directions or positional relationships shown, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
Example 1
As shown in fig. 1 and 2, an assembled wear-resistant hammer comprises a hammer handle 1, a compression block 2 and a hard alloy rod 3, wherein the hard alloy rod 3 comprises a plurality of hard alloy rods and is arranged in counter bores of the compression block 2, the whole compression block 2 is fixedly connected with the hammer handle 1, the hard alloy rod 3 is made of rigid hard alloy formed by vacuum sintering, and a boss 4 is arranged on one side end face of the hard alloy rod 3;
The hard alloy rod 3 comprises 88wt.% of TiC, 1wt.% of B 2 C and the balance of Fe-Ni alloy, wherein the Ni content is 12wt.%.
Example 2
As shown in fig. 1 and 2, an assembled wear-resistant hammer comprises a hammer handle 1, a compression block 2 and a hard alloy rod 3, wherein the hard alloy rod 3 comprises a plurality of hard alloy rods and is arranged in counter bores of the compression block 2, the whole compression block 2 is fixedly connected with the hammer handle 1, the hard alloy rod 3 is made of rigid hard alloy formed by vacuum sintering, and a boss 4 is arranged on one side end face of the hard alloy rod 3;
The hard alloy rod 3 comprises 88.5wt.% of TiC, 1.2wt.% of B 2 C and the balance of Fe-Ni alloy, wherein the Ni content is 12wt.%.
In the embodiment, the section of the hard alloy rod is circular, and the diameter of the hard alloy rod is 10-15 mm.
In this embodiment, as shown in fig. 1, the compacting block 2 adopts a "U" structure, the shape of which is consistent with the bottom of the hammer handle, and a plurality of counter bores are provided in the compacting block 2 for installing the cemented carbide rod 3.
In this embodiment, the compaction block is preferably made of high chromium cast iron.
In this embodiment, the ratio of the diameter of the cemented carbide rod 3 to the wall thickness of the grid metal matrix processed by the compaction block 2 is 3:1-1.5:1. The hard alloy rod 3 is prepared by vacuum sintering, and the diameter of the hard alloy rod is 10-15 mm. The diameter of the hard alloy is preferably 13mm, the wall thickness of the base body of the compaction block is 7.5mm, so that the hard alloy column can be used as a main wear-resistant medium in the striking direction, the impact resistance is high, breakage is not easy to occur, and meanwhile, under the protection effect of the side face of the hard alloy column, the compaction block cannot fail due to excessive wear and cannot break due to repeated striking of materials.
In this embodiment, preferably, the cemented carbide rod and the compaction block are in transition fit.
In this embodiment, as shown in fig. 2, the whole compression block 2 is fixedly connected with the bottom of the hammer handle 1 through a fixing screw 5.
The preparation method of the assembled wear-resistant hammer head comprises the following steps:
Preparing a hard alloy rod by a vacuum sintering process, namely preparing the hard alloy rod, weighing powder with the weight, wherein the particle size of the powder is 1200 meshes, using a planetary ball mill for wet grinding for 4 hours, the rotating speed is 120 r/min, heating up to 300 ℃ at 50 DEG/h for 1.5 hours, heating up to 720 ℃ at 30 DEG/h for 2 hours, heating up to 1100 ℃ at 30 DEG/h for 2.5 hours, heating up to 1350 ℃ at 20 DEG/h for 1 hour, cooling down to 830 ℃ at 25 DEG/h for 1.5 hours, and cooling down to room temperature along with a furnace;
The hammer handle is prepared from common low-carbon steel through sand casting or lost foam casting, the main purpose of the hammer is to save cost, improve the overall impact resistance of the hammer, prevent the hammer from being broken due to material impact and influence production and use, and the compaction block is prepared from high-chromium cast iron through lost foam casting. Preferably BTMCr components are used. Holes in net-shaped arrangement are preset in the lost foam, so that the subsequent assembly of the hard alloy is facilitated.
The concrete assembly operation is as follows:
(1) Heating the compaction block to 200 ℃, and then sequentially inserting the hard alloy rods into the holes at the temperature;
(2) And then the assembly body of the compression block and the hard alloy rod is installed along the groove slideway of the hammer handle and is fixed by using bolts.
Example 3
As shown in fig. 1 and 2, an assembled wear-resistant hammer comprises a hammer handle 1, a compression block 2 and a hard alloy rod 3, wherein the hard alloy rod 3 comprises a plurality of hard alloy rods and is arranged in counter bores of the compression block 2, the whole compression block 2 is fixedly connected with the hammer handle 1, the hard alloy rod 3 is made of rigid hard alloy formed by vacuum sintering, and a boss 4 is arranged on one side end face of the hard alloy rod 3;
The hard alloy rod 3 comprises 88.5wt.% of TiC, 1.3wt.% of B 2 C and the balance of Fe-Ni alloy, wherein the Ni content is 12wt.%.
In the embodiment, the section of the hard alloy rod is circular, and the diameter of the hard alloy rod is 10-15 mm.
In this embodiment, as shown in fig. 1, the compacting block adopts a "U" structure, its shape is consistent with the bottom of the hammer handle, and a plurality of counter bores are provided in the compacting block for installing the cemented carbide rod.
In this embodiment, the compaction block is made of high chromium cast iron.
In the embodiment, the ratio of the diameter of the hard alloy rod to the wall thickness of the grid metal matrix processed by the compaction block is 3:1-1.5:1. The hard alloy rod 3 is prepared by vacuum sintering, and the diameter of the hard alloy rod is 10-15 mm. The diameter of the hard alloy is preferably 13mm, the wall thickness of the base body of the compaction block is 7.5mm, so that the hard alloy column can be used as a main wear-resistant medium in the striking direction, the impact resistance is high, breakage is not easy to occur, and meanwhile, under the protection effect of the side face of the hard alloy column, the compaction block cannot fail due to excessive wear and cannot break due to repeated striking of materials.
In this embodiment, the cemented carbide rod and the compaction block are in transition fit.
In this embodiment, as shown in fig. 2, the whole compression block is fixedly connected with the bottom of the hammer handle through a fixing screw 5.
The preparation method of the assembled wear-resistant hammer head comprises the following steps:
Preparing a hard alloy rod by a vacuum sintering process, namely preparing the hard alloy rod, weighing powder with the weight, wherein the particle size of the powder is 1200 meshes, using a planetary ball mill for wet grinding for 4.5 hours, the rotating speed is 135 revolutions per minute, heating up to 300 ℃ at 50 DEG/h, preserving heat for 1.5 hours, heating up to 720 ℃ at 30 DEG/h, preserving heat for 2 hours, heating up to 1100 ℃ at 30 DEG/h, preserving heat for 2.5 hours, heating up to 1350 ℃ at 20 DEG/h, preserving heat for 1 hour, cooling down to 830 ℃ at 25 DEG/h, preserving heat for 1.5 hours, and cooling down to room temperature along with a furnace;
The hammer handle is prepared from common low-carbon steel through sand casting or lost foam casting, the main purpose of the hammer is to save cost, improve the overall impact resistance of the hammer, prevent the hammer from being broken due to material impact and influence production and use, and the compaction block is prepared from high-chromium cast iron through lost foam casting. Preferably BTMCr components are used. Holes in net-shaped arrangement are preset in the lost foam, so that the subsequent assembly of the hard alloy is facilitated.
The concrete assembly operation is as follows:
(1) Heating the compaction block to 210 ℃, and then sequentially inserting the hard alloy rods into the holes at the temperature;
(2) And then the assembly body of the compression block and the hard alloy rod is installed along the groove slideway of the hammer handle and is fixed by using bolts.
Example 4
As shown in fig. 1 and 2, an assembled wear-resistant hammer comprises a hammer handle 1, a compression block 2 and a hard alloy rod 3, wherein the hard alloy rod 3 comprises a plurality of hard alloy rods and is arranged in counter bores of the compression block 2, the whole compression block 2 is fixedly connected with the hammer handle 1, the hard alloy rod 3 is made of rigid hard alloy formed by vacuum sintering, and a boss 4 is arranged on one side end face of the hard alloy rod 3;
The hard alloy rod 3 comprises 88.8wt.% of TiC, 1.4wt.% of B 2 C and the balance of Fe-Ni alloy, wherein the Ni content is 12wt.%.
In the embodiment, the section of the hard alloy rod is circular, and the diameter of the hard alloy rod is 10-15 mm.
In this embodiment, as shown in fig. 1, the compacting block 2 adopts a "U" structure, the shape of which is consistent with the bottom of the hammer handle, and a plurality of counter bores are provided in the compacting block 2 for installing the cemented carbide rod 3.
In this embodiment, the compaction block is preferably made of high chromium cast iron.
In this embodiment, the ratio of the diameter of the cemented carbide rod 3 to the wall thickness of the grid metal matrix processed by the compaction block 2 is 3:1-1.5:1. The hard alloy rod 3 is prepared by vacuum sintering, and the diameter of the hard alloy rod is 10-15 mm. The diameter of the hard alloy is preferably 13mm, the wall thickness of the base body of the compaction block is 7.5mm, so that the hard alloy column can be used as a main wear-resistant medium in the striking direction, the impact resistance is high, breakage is not easy to occur, and meanwhile, under the protection effect of the side face of the hard alloy column, the compaction block cannot fail due to excessive wear and cannot break due to repeated striking of materials.
In this embodiment, preferably, the cemented carbide rod and the compaction block are in transition fit.
In this embodiment, as shown in fig. 2, the whole compression block 2 is fixedly connected with the bottom of the hammer handle 1 through a fixing screw 5.
The preparation method of the assembled wear-resistant hammer head comprises the following steps:
Preparing a hard alloy rod by a vacuum sintering process, namely preparing the hard alloy rod, weighing powder with the weight, wherein the particle size of the powder is 1200 meshes, using a planetary ball mill for wet grinding for 4.6 hours, the rotating speed is 140 revolutions per minute, heating up to 300 ℃ at 50 DEG/h, preserving heat for 1.5 hours, heating up to 720 ℃ at 30 DEG/h, preserving heat for 2 hours, heating up to 1100 ℃ at 30 DEG/h, preserving heat for 2.5 hours, heating up to 1350 ℃ at 20 DEG/h, preserving heat for 1 hour, cooling down to 830 ℃ at 25 DEG/h, preserving heat for 1.5 hours, and cooling down to room temperature along with a furnace;
The hammer handle is prepared from common low-carbon steel through sand casting or lost foam casting, the main purpose of the hammer is to save cost, improve the overall impact resistance of the hammer, prevent the hammer from being broken due to material impact and influence production and use, and the compaction block is prepared from high-chromium cast iron through lost foam casting. Preferably BTMCr components are used. Holes in net-shaped arrangement are preset in the lost foam, so that the subsequent assembly of the hard alloy is facilitated.
The concrete assembly operation is as follows:
(1) Heating the compaction block to 240 ℃, and then sequentially inserting the hard alloy rods into the holes at the temperature;
(2) And then the assembly body of the compression block and the hard alloy rod is installed along the groove slideway of the hammer handle and is fixed by using bolts.
Example 5
As shown in fig. 1 and 2, an assembled wear-resistant hammer comprises a hammer handle 1, a compression block 2 and a hard alloy rod 3, wherein the hard alloy rod 3 comprises a plurality of hard alloy rods and is arranged in counter bores of the compression block 2, the whole compression block 2 is fixedly connected with the hammer handle 1, the hard alloy rod 3 is made of rigid hard alloy formed by vacuum sintering, and a boss 4 is arranged on one side end face of the hard alloy rod 3;
The hard alloy rod 3 comprises 90wt.% of TiC, 1.5wt.% of B 2 C and the balance of Fe-Ni alloy, wherein the Ni content is 12wt.%.
In the embodiment, the section of the hard alloy rod is circular, and the diameter of the hard alloy rod is 10-15 mm.
In this embodiment, as shown in fig. 1, the compacting block 2 adopts a "U" structure, the shape of which is consistent with the bottom of the hammer handle, and a plurality of counter bores are provided in the compacting block 2 for installing the cemented carbide rod 3.
In this embodiment, the compaction block is preferably made of high chromium cast iron.
In this embodiment, the ratio of the diameter of the cemented carbide rod 3 to the wall thickness of the grid metal matrix processed by the compaction block 2 is 3:1-1.5:1. The hard alloy rod 3 is prepared by vacuum sintering, and the diameter of the hard alloy rod is 10-15 mm. The diameter of the hard alloy is preferably 13mm, the wall thickness of the base body of the compaction block is 7.5mm, so that the hard alloy column can be used as a main wear-resistant medium in the striking direction, the impact resistance is high, breakage is not easy to occur, and meanwhile, under the protection effect of the side face of the hard alloy column, the compaction block cannot fail due to excessive wear and cannot break due to repeated striking of materials.
In this embodiment, preferably, the cemented carbide rod and the compaction block are in transition fit.
In this embodiment, as shown in fig. 2, the whole compression block 2 is fixedly connected with the bottom of the hammer handle 1 through a fixing screw 5.
The preparation method of the assembled wear-resistant hammer head comprises the following steps:
Preparing a hard alloy rod by a vacuum sintering process, namely preparing the hard alloy rod, weighing powder with the weight, wherein the particle size of the powder is 1200 meshes, using a planetary ball mill for wet grinding for 5 hours, the rotating speed is 150 rpm, heating up to 300 ℃ at 50 DEG/h for 1.5 hours, heating up to 720 ℃ at 30 DEG/h for 2 hours, heating up to 1100 ℃ at 30 DEG/h for 2.5 hours, heating up to 1350 ℃ at 20 DEG/h for 1 hour, cooling down to 830 ℃ at 25 DEG/h for 1.5 hours, and cooling down to room temperature along with a furnace;
The hammer handle is prepared from common low-carbon steel through sand casting or lost foam casting, the main purpose of the hammer is to save cost, improve the overall impact resistance of the hammer, prevent the hammer from being broken due to material impact and influence production and use, and the compaction block is prepared from high-chromium cast iron through lost foam casting. Preferably BTMCr components are used. Holes in net-shaped arrangement are preset in the lost foam, so that the subsequent assembly of the hard alloy is facilitated.
The concrete assembly operation is as follows:
(1) Heating the compaction block to 250 ℃, and then sequentially inserting the hard alloy rods into the holes at the temperature;
(2) And then the assembly body of the compression block and the hard alloy rod is installed along the groove slideway of the hammer handle and is fixed by using bolts.
The TiC hard alloy is used as a main wear-resistant medium, so that the hammerhead and the wear resistance are increased, the service life is prolonged, the integral impact resistance of the hammerhead is increased, the hammerhead is prevented from being broken in the use process, the disassembly and assembly are convenient, the cost is saved, the energy consumption of a production enterprise is reduced, and the purposes of energy conservation and emission reduction are achieved.
The present invention is not limited to the preferred embodiments, and the present invention is described above in any way, but is not limited to the preferred embodiments, and any person skilled in the art will appreciate that the present invention is not limited to the embodiments described above, while the above disclosure is directed to various equivalent embodiments, which are capable of being modified or varied in several ways, it is apparent to those skilled in the art that many modifications, variations and adaptations of the embodiments described above are possible in light of the above teachings.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203862317U (en) * | 2014-04-30 | 2014-10-08 | 郑州鼎盛工程技术有限公司 | Novel PDC embedded brazing steel bonded hard alloy high abrasion-resistant hammer head |
| CN204602310U (en) * | 2015-04-23 | 2015-09-02 | 龙岩市泰美耐磨合金有限公司 | A kind of tup with alloy |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2799164B2 (en) * | 1996-05-31 | 1998-09-17 | 川崎重工業株式会社 | Hammer |
| CN104128231A (en) * | 2014-06-30 | 2014-11-05 | 洛阳天信重工机械有限公司 | Crusher impact hammer and production process |
| CN108456826B (en) * | 2017-08-31 | 2019-10-25 | 嘉禾县飞恒合金铸造有限公司 | The method of high temperature imbedding hard alloy manufacture composite wear-resistant hammerhead |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203862317U (en) * | 2014-04-30 | 2014-10-08 | 郑州鼎盛工程技术有限公司 | Novel PDC embedded brazing steel bonded hard alloy high abrasion-resistant hammer head |
| CN204602310U (en) * | 2015-04-23 | 2015-09-02 | 龙岩市泰美耐磨合金有限公司 | A kind of tup with alloy |
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