CN115449697A - Ceramic particle reinforced high manganese steel-based composite material hammerhead and preparation method thereof - Google Patents
Ceramic particle reinforced high manganese steel-based composite material hammerhead and preparation method thereof Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 170
- 239000002245 particle Substances 0.000 title claims abstract description 150
- 229910000617 Mangalloy Inorganic materials 0.000 title claims abstract description 52
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 241000251131 Sphyrna Species 0.000 title description 3
- 229910017060 Fe Cr Inorganic materials 0.000 claims abstract description 60
- 229910002544 Fe-Cr Inorganic materials 0.000 claims abstract description 60
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 51
- 239000000956 alloy Substances 0.000 claims abstract description 51
- 239000011159 matrix material Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims description 30
- 238000005266 casting Methods 0.000 claims description 29
- 239000011651 chromium Substances 0.000 claims description 27
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 22
- 244000035744 Hura crepitans Species 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 19
- 238000005303 weighing Methods 0.000 claims description 19
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 18
- 239000010936 titanium Substances 0.000 claims description 17
- 239000010949 copper Substances 0.000 claims description 16
- 239000011572 manganese Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
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- 238000000034 method Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 229910052787 antimony Inorganic materials 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 238000010079 rubber tapping Methods 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 239000011574 phosphorus Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 229910001566 austenite Inorganic materials 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims 1
- 229910000599 Cr alloy Inorganic materials 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
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- 230000002776 aggregation Effects 0.000 description 1
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- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
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- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
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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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
-
- 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
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
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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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention discloses a ceramic particle reinforced high manganese steel-based composite material hammer and a preparation method thereof, wherein the hammer comprises goldBelongs to a matrix, ZTA ceramic particles, B 2 C layer, fe-Cr alloy layer, ZTA ceramic layer, and B 2 The C layer and the Fe-Cr alloy layer are integrally used as a wear-resistant body and are positioned on the working side of the hammer head, the ZTA ceramic layer and the B layer 2 A layer C and a Fe-Cr alloy layer embedded in the metal matrix, B 2 The layer C is coated on the outer side of the ZTA ceramic layer, and the layer B is coated with the Fe-Cr alloy layer 2 And (4) the outer side of the layer C. Compared with the high manganese steel hammer head in the prior art, the high manganese steel hammer head has the characteristics of high hardness, excellent wear resistance, long service life and the like under the working condition of high impact load; the high manganese steel hammer head is lower in cost and higher in cost performance.
Description
Technical Field
The invention relates to a hammer head, in particular to a ceramic particle reinforced high manganese steel-based composite material hammer head and a preparation method thereof.
Background
In the fields of mines, metallurgy, building materials, cement, etc., crushers (hammer crushers, impact crushers, etc.) are widely used as indispensable equipment for crushing materials, wherein a hammer is an important component and a wearing part in the crusher. Conventionally, a hammer head of a crusher is poor in wear resistance, frequent in replacement and short in service life, so that the crushing efficiency of materials is limited. According to incomplete statistics, the consumption of the hammer head of the hammer crusher is over 50 ten thousand tons every year in China, and the hammer head tends to rise year by year, so that the development of novel hammer head materials and a processing and forming technology thereof and the improvement of the service life of the hammer head become problems to be solved urgently.
For some large-sized material crushing equipment, the crusher hammer head not only needs excellent wear resistance, but also needs to bear the impact force generated by the material, and the crusher hammer head is often failed due to breakage in the process. So that the microscopic shadow effect of the reinforcing particles in the composite material layer can not be fully exerted.
Disclosure of Invention
The invention aims to: the invention aims to overcome the defects in the prior art and provides a ceramic particle reinforced high manganese steel base composite material hammer and a preparation method thereof.
The technical scheme is as follows: the invention isThe ceramic particle reinforced high manganese steel base composite material hammer comprises a metal matrix, ZTA ceramic particles and B 2 C layer and Fe-Cr alloy layer, the ZTA ceramic particles, B 2 The C layer and the Fe-Cr alloy layer are integrally used as a wear-resistant body and positioned on the working side of the hammer head, and the ZTA ceramic particles and the B layer 2 A layer C and a Fe-Cr alloy layer embedded in the metal matrix, the layer B 2 The layer C is coated on the outer side of the ZTA ceramic layer, and the Fe-Cr alloy layer is coated on the layer B 2 And (4) the outer side of the layer C.
Furthermore, the metal matrix is made of high manganese steel material.
Further, the high manganese steel material comprises the following components in percentage by weight: c, carbon C:1.05 to 1.25 percent; manganese Mn:15.0 to 17.0 percent; silicon Si:0.7 to 1.0 percent; chromium Cr:2.6 to 2.9 percent; nickel Ni:2 to 3 percent; titanium Ti:0.3 to 0.6 percent; antimony Sb:0.4 to 0.55 percent; copper (Cu): 0.5 to 0.8 percent; v, V:0.6 to 0.9 percent; the balance being Fe.
Further, the weight percentage of chromium Cr in the high manganese steel material is 2.6 to 2.8 percent; the weight percentage of the phosphorus is as follows: less than or equal to 0.05%; the sulfur comprises the following components in percentage by weight: less than or equal to 0.05%.
Further, the high manganese steel material comprises the following components in percentage by weight: c, carbon C:1.1 to 1.25 percent; manganese Mn:16.0 to 17.0 percent; silicon Si:0.7 to 0.85 percent; chromium Cr:2.8 to 2.9 percent; nickel Ni:2 to 3 percent; titanium Ti:0.5 to 0.6 percent; antimony Sb:0.4 to 0.55 percent; copper Cu:0.5 to 0.6 percent; v, V:0.8 to 0.9 percent; the balance being Fe.
Further, the particle size of the ZTA ceramic particles is 2-3mm; b is 2 In layer C, layer B 2 C, the grain diameter of the ceramic particles is 0.5 to 1 mu m, and the thickness of the ceramic particles is 12 to 16 mu m; the content of Cr in the Fe-Cr alloy layer is 62%, the particle size is 30-70 mu m, and the thickness is 20-24 mu m.
The invention also discloses a preparation method of the ceramic particle reinforced high manganese steel-based composite material hammer, which comprises the following steps:
(1) Cleaning ZTA ceramic particles with alcohol, removing oil and ash on the surfaces of the ZTA ceramic particles, and then placing the ZTA ceramic particles in an oven for later use;
(2) Weighing ZTA ceramic particles with a certain mass,weighing the silica sol solution according to 15-20% of the mass of the ZTA ceramic particles, and weighing the B according to 6-10% of the mass of the ZTA ceramic particles 2 C ceramic particles, mixing the silica sol solution with B 2 Mixing the ceramic particles C to prepare B 2 C ceramic particle slurry; b is sprayed by a spraying device at a pressure of 0.02MPa 2 C, uniformly spraying the ceramic particle slurry to the surfaces of ZTA ceramic particles, and then putting the ZTA ceramic particles into a resistance wire furnace to be cured for 20 to 50 minutes at the temperature of between 100 and 200 ℃;
(3) Mixing the silica sol solution and the Fe-Cr alloy powder according to the proportion of 2 2 Coating the ZTA ceramic particle preform with C/Fe-Cr, and curing in a resistance wire furnace at 200-300 deg.C for 30-50 min;
(4) Preparing a disappearing mould and making the grid B 2 Fixing the C/Fe-Cr coated ZTA ceramic particles to one side of a working surface of a mold, brushing a coating, and drying in a drying room at 60 to 70 ℃;
(5) Smelting a metal matrix alloy raw material, wherein the tapping temperature is 1610 to 1670 ℃;
(6) Molding by casting, wherein negative pressure equipment is continuously used for vacuumizing the cavity in the casting process, and the vacuum load is unloaded 20-50 minutes after casting;
(7) Cooling in a sand box for 10-15 hours, opening the box, and then moving to a heat treatment furnace;
(8) Discharging and carrying out water toughening treatment.
Further, the tapping temperature in the step (5) is 1620 to 1630 ℃.
Further, the negative pressure casting process in the step (6) specifically comprises the following steps: fixing the lost foam into a sand box, compacting by using a compacting table, and then placing the sand box into a negative pressure system, wherein the negative pressure system is vacuumized to be 3-6 MPa; after casting for 20-50 minutes, the vacuum pressure was relieved.
Further, the water toughening treatment in the step (8) specifically includes: heating to 240 ℃ at a speed of 50 ℃/h, and preserving heat for 1 hour; heating to 560 ℃ at a speed of 50 ℃/h, and keeping the temperature for 1.5h; heating to 830 ℃ at the speed of 30 ℃/h, and preserving heat for 2.5h; heating to 1105 ℃ at the speed of 25 ℃/h, and preserving heat for 3h; then taking out the casting and quickly placing the casting into cooling water at 20 ℃ to ensure that the casting is completely immersed and compressed gas is continuously blown into the bottom of the cooling water, and ensuring that the temperature of the cooling water does not exceed 40 ℃. By the process, a large amount of high-temperature austenite is generated in the casting, and the integral impact resistance of the casting is improved.
Has the advantages that: the invention has the following beneficial effects:
(1) In the metal matrix material, the added Cr, mn and Ni can form stable compounds, and the overall wear resistance and hardness of the hammer head are increased through water toughening treatment;
(2) In the metal matrix material, the added elements such as Sb and Ti can generate synergistic action with other elements in the alloy, so that firstly, the matrix structure is refined, the aggregation of cementite is inhibited, the austenite structure is strengthened, and the comprehensive mechanical property of the hammer head is improved;
(3) In the invention, ZTA ceramic layer and B are adopted 2 C/Fe-Cr to promote the bonding of the metal matrix to B 2 A transition metallurgical bonding interface with high hardness and wear resistance is formed among the C/Fe-Cr coated ZTA ceramic particles, and the positive promotion effect on improving the overall wear resistance of the hammer is achieved;
(4) Compared with the high manganese steel hammer head in the prior art, the high manganese steel hammer head has the characteristics of high hardness, excellent wear resistance, long service life and the like under the working condition of high impact load; the high manganese steel hammer head is lower in cost and higher in cost performance.
Drawings
FIG. 1 is a cross-sectional view of a structure of one embodiment of the invention;
fig. 2 is a diagram of a hammerhead of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships that are shown merely for convenience in describing the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention is described in further detail below by means of specific embodiments and with reference to the attached drawings.
Example 1
As shown in figures 1 and 2, the ceramic particle reinforced high manganese steel based composite material hammer comprises a metal matrix 1, a ZTA ceramic layer 2 and a B 2 A C layer 3 and an Fe-Cr alloy layer 4, the ZTA ceramic layer 2, B 2 The C layer 3 and the Fe-Cr alloy layer 4 are integrally used as wear-resistant bodies and positioned on the working side of the hammer head, and the ZTA ceramic layers 2 and B 2 A C layer 3 and an Fe-Cr alloy layer 4 embedded in the metal matrix 1, the B 2 The layer C3 is coated on the outer side of the ZTA ceramic layer 2, and the Fe-Cr alloy layer 4 is coated on the layer B 2 Outside layer 3.
In the hammer head in the embodiment, the wear-resistant part is formed by combining ZTA ceramic layers 2 and B 2 C/Fe-Cr to promote the combination of the metal matrix 1 and B 2 A transition metallurgical bonding interface with high hardness and wear resistance is formed among the C/Fe-Cr coated ZTA ceramic particles, and the positive promotion effect on improving the whole wear resistance of the hammer is achieved.
Example 2
As shown in fig. 1 and 2The ceramic particle reinforced high manganese steel base composite material hammer comprises a metal matrix 1, a ZTA ceramic layer 2 and a B 2 A C layer 3 and an Fe-Cr alloy layer 4, the ZTA ceramic layer 2, B 2 The C layer 3 and the Fe-Cr alloy layer 4 are integrally used as wear-resistant bodies and positioned on the working side of the hammer head, and the ZTA ceramic layer 2 and the B ceramic layer 2 A C layer 3 and an Fe-Cr alloy layer 4 embedded in the metal matrix 1, the B 2 The layer C3 is coated on the outer side of the ZTA ceramic layer 2, and the Fe-Cr alloy layer 4 is coated on the layer B 2 Outside layer 3.
In the embodiment, in order to improve the wear resistance and hardness of the matrix, the metal matrix 1 is made of high manganese steel.
In this embodiment, preferably, the high manganese steel material includes the following components by weight percent: c, carbon C:1.05 percent; manganese Mn:15.0 percent; silicon Si:0.7 percent; chromium Cr:2.6 percent; nickel Ni:2 percent; titanium (Ti): 0.3 percent; antimony Sb:0.4 percent; copper Cu:0.5 percent; v, V:0.6 percent; the balance being Fe.
In this embodiment, preferably, the high manganese steel material contains phosphorus in the following weight percentage: less than or equal to 0.05%; the sulfur comprises the following components in percentage by weight: less than or equal to 0.05%.
In the embodiment, the diameter of the ZTA ceramic particles is preferably 2 to 3mm; b is 2 In layer C, layer B 2 C, the grain diameter of the ceramic particles is 0.5 to 1 mu m, and the thickness of the ceramic particles is 12 to 16 mu m; the content of Cr in the Fe-Cr alloy layer is 62%, the particle size is 30-70 mu m, and the thickness is 20-24 mu m.
In this embodiment, the preparation method of the ceramic particle reinforced high manganese steel-based composite material hammer head includes the following steps:
(1) Cleaning ZTA ceramic particles by using alcohol, performing oil and ash removal treatment on the surfaces of the ZTA ceramic particles, and then placing the ZTA ceramic particles in an oven for later use;
(2) Weighing ZTA ceramic particles in a certain mass, weighing silica sol solution 15% of ZTA ceramic particles in mass, and weighing B6% of ZTA ceramic particles in mass 2 C ceramic particles, mixing the silica sol solution with B 2 Mixing the ceramic particles C to prepare B 2 C, ceramic particle slurry; b is sprayed by a spraying device at a pressure of 0.02MPa 2 C ceramic particle slurry is uniformly sprayed toThe ZTA ceramic particle surface is put into a resistance wire furnace to be solidified for 20 minutes at 100 ℃;
(3) Mixing the silica sol solution and the Fe-Cr alloy powder according to the proportion of 2 2 Coating the ZTA ceramic particle preform with C/Fe-Cr, and curing in a resistance wire furnace at 200 ℃ for 30 minutes;
(4) Preparing a disappearing mould and forming a grid B 2 C/Fe-Cr coated ZTA ceramic particles are fixed to one side of the working surface of a mould, coated with paint and dried in a drying room at 60 ℃;
(5) Smelting a metal matrix alloy raw material, wherein the tapping temperature is 1610 ℃;
(6) Casting and molding, wherein in the casting process, negative pressure equipment is continuously used for vacuumizing the cavity, the lost foam is fixed in a sand box and tamped by using a jolt ramming table, and then the sand box is placed in a negative pressure system, wherein the vacuum pumping of the negative pressure system is 3MPa; after casting for 20 minutes, unloading the vacuum pressure;
(7) Cooling the sand box for 10 hours, opening the box, and then moving the box into a heat treatment furnace;
(8) Discharging from the furnace, and carrying out water toughening treatment: heating to 240 ℃ at a speed of 50 ℃/h, and preserving heat for 1 hour; heating to 560 ℃ at a speed of 50 ℃/h, and keeping the temperature for 1.5h; heating to 830 ℃ at a speed of 30 ℃/h, and preserving heat for 2.5h; heating to 1105 ℃ at the speed of 25 ℃/h, and preserving heat for 3h; then taking out and putting into cold water quickly.
Example 3
As shown in figures 1 and 2, the ceramic particle reinforced high manganese steel based composite material hammer comprises a metal matrix 1, a ZTA ceramic layer 2 and a B 2 A C layer 3 and an Fe-Cr alloy layer 4, the ZTA ceramic layer 2, B 2 The C layer 3 and the Fe-Cr alloy layer 4 are integrally used as wear-resistant bodies and positioned on the working side of the hammer head, and the ZTA ceramic layer 2 and the B ceramic layer 2 A C layer 3 and an Fe-Cr alloy layer 4 embedded in the metal matrix 1, the B 2 The layer C3 is coated on the outer side of the ZTA ceramic layer 2, and the Fe-Cr alloy layer 4 is coated on the layer B 2 Outside the C layer 3.
In the embodiment, in order to improve the wear resistance and hardness of the base body, the metal base body is made of high manganese steel material.
In this embodiment, preferably, the high manganese steel material includes the following components by weight: c, carbon C:1.1 percent; manganese Mn:16.0 percent; silicon Si:0.8 percent; chromium Cr:2.7 percent; nickel Ni:2.5 percent; titanium Ti:0.5 percent; antimony Sb:0.45 percent; copper (Cu): 0.6 percent; v, V:0.7 percent; the balance being Fe.
In this embodiment, the phosphorus preferably comprises the following components in percentage by weight: less than or equal to 0.05%; the sulfur comprises the following components in percentage by weight: less than or equal to 0.05%.
In the embodiment, the diameter of the ZTA ceramic particles is preferably 2 to 3mm; b is 2 In layer C, layer B 2 C, the grain diameter of the ceramic particles is 0.5 to 1 mu m, and the thickness of the ceramic particles is 12 to 16 mu m; the content of Cr in the Fe-Cr alloy layer is 62%, the particle size is 30-70 mu m, and the thickness is 20-24 mu m.
In this embodiment, the preparation method of the ceramic particle reinforced high manganese steel-based composite material hammer head includes the following steps:
(1) Cleaning ZTA ceramic particles with alcohol, removing oil and ash on the surfaces of the ZTA ceramic particles, and then placing the ZTA ceramic particles in an oven for later use;
(2) Weighing ZTA ceramic particles with a certain mass, weighing silica sol solution according to 17% of ZTA ceramic particles, weighing B according to 7% of ZTA ceramic particles 2 C ceramic particles, mixing the silica sol solution with B 2 C mixing the ceramic particles to prepare B 2 C ceramic particle slurry; b is sprayed by a spraying device at a pressure of 0.02MPa 2 C, uniformly spraying the ceramic particle slurry to the surfaces of ZTA ceramic particles, and then putting the ZTA ceramic particles into a resistance wire furnace to be cured for 25 minutes at 120 ℃;
(3) Mixing the silica sol solution and the Fe-Cr alloy powder according to the proportion of 2 2 Coating the ZTA ceramic particle preform with C/Fe-Cr, and then putting the ZTA ceramic particle preform into a resistance wire furnace to be solidified for 35 minutes at 220 ℃;
(4) Preparing a disappearing mould and forming a grid B 2 Fixing the C/Fe-Cr coated ZTA ceramic particles to one side of the working surface of the die, coating the ceramic particles with paint and drying the ceramic particles in a drying room at 65 ℃;
(5) Smelting a metal matrix alloy raw material, wherein the tapping temperature is 1630 ℃;
(6) Casting and molding, wherein in the casting process, negative pressure equipment is continuously used for vacuumizing the cavity, the lost foam is fixed in a sand box and tamped by using a jolt ramming table, and then the sand box is placed in a negative pressure system, wherein the vacuum pumping of the negative pressure system is 4MPa; after pouring for 30 minutes, unloading the vacuum pressure;
(7) Cooling the sand box for 12 hours, opening the box, and then moving the sand box into a heat treatment furnace;
(8) Discharging from the furnace, and carrying out water toughening treatment: heating to 240 ℃ at a speed of 50 ℃/h, and preserving heat for 1 hour; heating to 560 ℃ at a speed of 50 ℃/h, and preserving heat for 1.5h; heating to 830 ℃ at a speed of 30 ℃/h, and preserving heat for 2.5h; heating to 1105 ℃ at the speed of 25 ℃/h, and preserving heat for 3h; then taking out and putting into cold water quickly.
Example 4
As shown in figures 1 and 2, the ceramic particle reinforced high manganese steel-based composite material hammer comprises a metal matrix 1, a ZTA ceramic layer 2 and a B 2 A C layer 3 and an Fe-Cr alloy layer 4, the ZTA ceramic layer 2, B 2 The C layer 3 and the Fe-Cr alloy layer 4 are integrally used as wear-resistant bodies and positioned on the working side of the hammer head, and the ZTA ceramic layers 2 and B 2 A C layer 3 and an Fe-Cr alloy layer 4 embedded in the metal matrix 1, the B 2 The layer C3 is coated on the outer side of the ZTA ceramic layer 2, and the Fe-Cr alloy layer 4 is coated on the layer B 2 Outside the C layer 3.
In the embodiment, in order to improve the wear resistance and hardness of the base body, the metal base body is made of high manganese steel material.
In this embodiment, preferably, the high manganese steel material includes the following components by weight: c, carbon C:1.2 percent; manganese Mn:16.5 percent; silicon Si:0.85 percent; chromium Cr:2.8 percent; nickel Ni:2.8 percent; titanium Ti:0.5 percent; antimony Sb:0.5 percent; copper (Cu): 0.6 percent; v, V:0.7 percent; the balance being Fe.
In this embodiment, the phosphorus preferably comprises the following components in percentage by weight: less than or equal to 0.05%; the sulfur comprises the following components in percentage by weight: less than or equal to 0.05%.
In the embodiment, the diameter of the ZTA ceramic particles is preferably 2 to 3mm; b is 2 In layer C, layer B 2 C, the grain diameter of the ceramic particles is 0.5 to 1 mu m, and the thickness of the ceramic particles is 12 to 16 mu m; the content of Cr in the Fe-Cr alloy layer is 62%, the particle size is 30-70 mu m, and the thickness is 20-24 mu m.
In this embodiment, the preparation method of the ceramic particle reinforced high manganese steel-based composite material hammer head includes the following steps:
(1) Cleaning ZTA ceramic particles with alcohol, removing oil and ash on the surfaces of the ZTA ceramic particles, and then placing the ZTA ceramic particles in an oven for later use;
(2) Weighing ZTA ceramic particles with a certain mass, weighing silica sol solution according to 18% of ZTA ceramic particles, weighing B according to 9% of ZTA ceramic particles 2 C ceramic particles, mixing the silica sol solution with B 2 Mixing the ceramic particles C to prepare B 2 C, ceramic particle slurry; b is sprayed by a spraying device at a pressure of 0.02MPa 2 C, uniformly spraying the ceramic particle slurry to the surfaces of ZTA ceramic particles, and then putting the ZTA ceramic particles into a resistance wire furnace to be cured for 30 minutes at 160 ℃;
(3) Mixing the silica sol solution and the Fe-Cr alloy powder according to the proportion of 2 2 Coating the ZTA ceramic particle preform with C/Fe-Cr, and curing in a resistance wire furnace at 260 ℃ for 40 minutes;
(4) Preparing a disappearing mould and making the grid B 2 C/Fe-Cr coated ZTA ceramic particles are fixed to one side of the working surface of a mould, coated with paint and dried in a drying room at 68 ℃;
(5) Smelting a metal matrix alloy raw material, wherein the tapping temperature is 1630 ℃;
(6) Casting and molding, wherein in the casting process, negative pressure equipment is continuously used for vacuumizing the cavity, the lost foam is fixed in a sand box and tamped by using a jolt ramming table, and then the sand box is placed in a negative pressure system, wherein the vacuum pumping of the negative pressure system is 5MPa; after pouring for 35 minutes, unloading the vacuum pressure;
(7) Cooling the sand box for 13 hours, opening the box, and then moving the box into a heat treatment furnace;
(8) Discharging from the furnace, and carrying out water toughening treatment: heating to 240 ℃ at a speed of 50 ℃/h, and keeping the temperature for 1 hour; heating to 560 ℃ at a speed of 50 ℃/h, and preserving heat for 1.5h; heating to 830 ℃ at the speed of 30 ℃/h, and preserving heat for 2.5h; heating to 1105 ℃ at the speed of 25 ℃/h, and preserving heat for 3h; then taking out and quickly putting into cold water.
Example 5
As shown in figures 1 and 2, the ceramic particle reinforced high manganese steel based composite material hammer comprises a metal matrix 1, a ZTA ceramic layer 2 and a B 2 A C layer 3 and an Fe-Cr alloy layer 4, the ZTA ceramic layer 2, B 2 The C layer 3 and the Fe-Cr alloy layer 4 are integrally used as wear-resistant bodies and positioned on the working side of the hammer head, and the ZTA ceramic layers 2 and B 2 A C layer 3 and an Fe-Cr alloy layer 4 embedded in the metal matrix 1, the B 2 The layer C3 is coated on the outer side of the ZTA ceramic layer 2, and the Fe-Cr alloy layer 4 is coated on the layer B 2 Outside layer 3.
In the embodiment, in order to improve the wear resistance and hardness of the base body, the metal base body is made of high manganese steel material.
In this embodiment, preferably, the high manganese steel material includes the following components by weight percent: c, carbon C: 1.25 percent; manganese Mn: 17.0 percent; silicon Si: 1.0 percent; chromium Cr: 2.9 percent; nickel Ni: 3 percent; titanium (Ti): 0.6 percent; antimony Sb: 0.55 percent; copper Cu: 0.8 percent; v, V: 0.9 percent; the balance being Fe.
In this embodiment, the phosphorus preferably comprises the following components in percentage by weight: less than or equal to 0.05%; the sulfur comprises the following components in percentage by weight: less than or equal to 0.05%.
In the embodiment, the diameter of the ZTA ceramic particles is preferably 2 to 3mm; b is 2 In layer C, layer B 2 C, the grain diameter of the ceramic particles is 0.5 to 1 mu m, and the thickness of the ceramic particles is 12 to 16 mu m; the content of Cr in the Fe-Cr alloy layer is 62%, the particle size is 30-70 mu m, and the thickness is 20-24 mu m.
In this embodiment, the preparation method of the ceramic particle reinforced high manganese steel-based composite material hammer head includes the following steps:
(1) Cleaning ZTA ceramic particles by using alcohol, performing oil and ash removal treatment on the surfaces of the ZTA ceramic particles, and then placing the ZTA ceramic particles in an oven for later use;
(2) Weighing ZTA ceramic particles in a certain mass, weighing silica sol solution according to 20% of ZTA ceramic particles in mass, and weighing B according to 10% of ZTA ceramic particles in mass 2 C ceramic particles, mixing the silica sol solution with B 2 Mixing the ceramic particles C to prepare B 2 C ceramic particle slurry; b is sprayed by a spraying device at a pressure of 0.02MPa 2 C, uniformly spraying the ceramic particle slurry to the surfaces of ZTA ceramic particles, and then putting the ZTA ceramic particles into a resistance wire furnace to be cured for 50 minutes at 200 ℃;
(3) Mixing the silica sol solution and the Fe-Cr alloy powder in a ratio of 2 2 Coating the ZTA ceramic particle preform with C/Fe-Cr, and then curing for 50 minutes at 300 ℃ in a resistance wire furnace;
(4) Preparing a disappearing mould and forming a grid B 2 C/Fe-Cr coated ZTA ceramic particles are fixed to one side of the working surface of a mould, coated with a coating and dried in a drying room at 70 ℃;
(5) Smelting a metal matrix alloy raw material, wherein the tapping temperature is 1670 ℃;
(6) Casting and molding, wherein in the casting process, negative pressure equipment is continuously used for vacuumizing the cavity, the lost foam is fixed in a sand box and tamped by using a jolt ramming table, and then the sand box is placed in a negative pressure system, wherein the vacuum pumping of the negative pressure system is 6MPa; after pouring for 50 minutes, unloading the vacuum pressure;
(7) Cooling the sand box for 15 hours, opening the box, and then moving the box into a heat treatment furnace;
(8) Discharging from the furnace, and carrying out water toughening treatment: heating to 240 ℃ at a speed of 50 ℃/h, and keeping the temperature for 1 hour; heating to 560 ℃ at a speed of 50 ℃/h, and preserving heat for 1.5h; heating to 830 ℃ at the speed of 30 ℃/h, and preserving heat for 2.5h; heating to 1105 ℃ at the speed of 25 ℃/h, and preserving heat for 3h; then taking out and quickly putting into cold water.
Compared with the high manganese steel hammer head in the prior art, the high manganese steel hammer head has the characteristics of high hardness, excellent wear resistance, long service life and the like under the working condition of high impact load; the high manganese steel hammer head is lower in cost and higher in cost performance.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a ceramic particle reinforcing high manganese steel base combined material tup which characterized in that: comprises a metal matrix, ZTA ceramic particles and B 2 A C layer and an Fe-Cr alloy layer, the ZTA ceramic particles, B 2 The C layer and the Fe-Cr alloy layer are integrally used as wear-resistant bodies and positioned on the working side of the hammer head, and the ZTA ceramic particles and the B are 2 A layer C and a Fe-Cr alloy layer embedded in the metal matrix, the layer B 2 The layer C is coated on the outer side of the ZTA ceramic layer, and the Fe-Cr alloy layer is coated on the layer B 2 And (4) the outer side of the layer C.
2. The ceramic particle reinforced high manganese steel-based composite material hammer head according to claim 1, characterized in that: the metal matrix is made of high manganese steel material.
3. The ceramic particle reinforced high manganese steel-based composite material hammer head according to claim 2, characterized in that: the high manganese steel material comprises the following components in percentage by weight: c, carbon C:1.05 to 1.25 percent; manganese Mn:15.0 to 17.0 percent; silicon Si:0.7 to 1.0%; chromium Cr:2.6 to 2.9 percent; nickel Ni:2 to 3 percent; titanium Ti:0.3 to 0.6 percent; antimony Sb:0.4 to 0.55 percent; copper Cu:0.5 to 0.8 percent; v, V:0.6 to 0.9 percent; the balance being Fe.
4. The ceramic particle reinforced high manganese steel-based composite material hammer head as claimed in claim 3, wherein: the weight percentage of chromium Cr in the high manganese steel material is 2.6 to 2.8 percent; the weight percentage of the phosphorus is as follows: less than or equal to 0.05%; the sulfur comprises the following components in percentage by weight: less than or equal to 0.05 percent.
5. The ceramic particle reinforced high manganese steel-based composite material hammer head according to claim 3, characterized in that: the high manganese steel material comprises the following components in percentage by weight: c, carbon C:1.1 to 1.25 percent; manganese Mn:16.0 to 17.0 percent; silicon Si:0.7 to 0.85 percent; chromium Cr:2.8 to 2.9 percent; nickel Ni:2 to 3 percent; titanium Ti:0.5 to 0.6 percent; antimony Sb:0.4 to 0.55 percent; copper Cu:0.5 to 0.6 percent; v, vanadium: 0.8 to 0.9 percent; the balance being Fe.
6. The ceramic particle reinforced high manganese steel-based composite material hammer head according to claim 1, characterized in that: the particle size of the ZTA ceramic particles is 2 to 3mm; b is 2 In layer C, layer B 2 C, the grain diameter of the ceramic particles is 0.5 to 1 mu m, and the thickness of the ceramic particles is 12 to 16 mu m; the content of Cr in the Fe-Cr alloy layer is 62%, the particle size is 30-70 mu m, and the thickness is 20-24 mu m.
7. The method for preparing the ceramic particle reinforced high manganese steel-based composite material hammer head according to any one of claims 1 to 6, wherein the method comprises the following steps: the method comprises the following steps:
(1) Cleaning ZTA ceramic particles with alcohol, removing oil and ash on the surfaces of the ZTA ceramic particles, and then placing the ZTA ceramic particles in an oven for later use;
(2) Weighing ZTA ceramic particles with a certain mass, weighing a silica sol solution according to 15-20% of the ZTA ceramic particles, and weighing B according to 6-10% of the ZTA ceramic particles 2 C ceramic particles, mixing the silica sol solution with B 2 C mixing the ceramic particles to prepare B 2 C, ceramic particle slurry; b is sprayed by a spraying device at a pressure of 0.02MPa 2 C, uniformly spraying the ceramic particle slurry to the surfaces of ZTA ceramic particles, and then putting the ZTA ceramic particles into a resistance wire furnace to be cured for 20 to 50 minutes at 100 to 200 ℃;
(3) Mixing the silica sol solution and the Fe-Cr alloy powder according to the proportion of 2Then weighing Fe-Cr alloy powder slurry accounting for 8-10 percent of the mass of the ZTA ceramic particles, adding the slurry into the ceramic particles prepared in the step (2), uniformly mixing, and putting the mixture into a latticed die to prepare latticed B 2 Coating the ZTA ceramic particle preform with C/Fe-Cr, and then curing in a resistance wire furnace at 200-300 ℃ for 30-50 minutes;
(4) Preparing a disappearing mould and forming a grid B 2 Fixing the C/Fe-Cr coated ZTA ceramic particles to one side of a working surface of a die, brushing a coating, and drying in a drying room at 60-70 ℃;
(5) Smelting a metal matrix alloy raw material, wherein the tapping temperature is 1610 to 1670 ℃;
(6) Molding by casting, wherein negative pressure equipment is continuously used for vacuumizing the cavity in the casting process, and the vacuum load is unloaded 20-50 minutes after casting;
(7) Cooling in a sand box for 10-15 hours, opening the box, and then moving to a heat treatment furnace;
(8) Discharging and carrying out water toughening treatment.
8. The method for preparing the ceramic particle reinforced high manganese steel-based composite material hammer head according to claim 7, wherein the method comprises the following steps: in the step (5), the tapping temperature is 1620 to 1630 ℃.
9. The method for preparing the ceramic particle reinforced high manganese steel-based composite material hammer head according to claim 7, wherein the method comprises the following steps: the negative pressure casting process in the step (6) specifically comprises the following steps: fixing the lost foam in a sand box, compacting by using a compacting table, and then putting the sand box into a negative pressure system, wherein the vacuum pumping of the negative pressure system is 3-6 MPa; after casting for 20-50 minutes, the vacuum pressure is relieved.
10. The method for preparing the ceramic particle reinforced high manganese steel-based composite material hammer head according to claim 7, characterized in that: the water toughening treatment in the step (8) specifically comprises the following steps: heating to 240 ℃ at a speed of 50 ℃/h, and keeping the temperature for 1 hour; heating to 560 ℃ at a speed of 50 ℃/h, and keeping the temperature for 1.5h; heating to 830 ℃ at the speed of 30 ℃/h, and preserving heat for 2.5h; heating to 1105 ℃ at the speed of 25 ℃/h, and preserving heat for 3h; then taking out the casting and quickly placing the casting into cooling water at 20 ℃ to ensure that the casting is completely immersed and compressed gas is continuously blown into the bottom of the cooling water, and ensuring that the temperature of the cooling water does not exceed 40 ℃. By the process, a large amount of high-temperature austenite is generated in the casting, and the integral impact resistance of the casting is improved.
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