CN108842041A - A kind of multi-layer wear-resistant ball and preparation method thereof can be used for grinding strong oxidizing property material - Google Patents
A kind of multi-layer wear-resistant ball and preparation method thereof can be used for grinding strong oxidizing property material Download PDFInfo
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- CN108842041A CN108842041A CN201810768958.3A CN201810768958A CN108842041A CN 108842041 A CN108842041 A CN 108842041A CN 201810768958 A CN201810768958 A CN 201810768958A CN 108842041 A CN108842041 A CN 108842041A
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- resistant ball
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- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
-
- 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
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
-
- 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
- C21D5/00—Heat treatments of cast-iron
-
- 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
- C21D5/00—Heat treatments of cast-iron
- C21D5/04—Heat treatments of cast-iron of white cast-iron
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/067—Metallic material containing free particles of non-metal elements, e.g. carbon, silicon, boron, phosphorus or arsenic
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/123—Spraying molten metal
Abstract
A kind of multi-layer wear-resistant ball can be used for grinding strong oxidizing property material, including wear-resistant ball matrix and alloy coat, the ingredient of wear-resistant ball matrix are made of following mass fraction：Cr 16.5-19.0%, C 2.3-3.5%, Mn 1.2-1.8%, Si 0.63-0.80%, Mo 0.11-0.15%, Cu 0.01-0.03%, Ni 0.25-0.48%, V 0.13-0.28%, Al 0.4-1.2%, Nb 0.28-0.46%, Bi 0.08-0.14%, S≤0.028%, P≤0.033%, surplus are Fe and inevitable impurity；Wear-resistant ball of the invention is heat-treated six big steps and is made by raw material melting, cast molding, matrix heat treatment, preparation injection aluminium alloy, injection alloy-layer, coating, the present invention is while mill ball matrix has high-intensitive, high rigidity property, a laminated gold plate is sprayed in wear-resistant ball, the drawbacks of alloy-layer effectively prevents mill ball inner base to be oxidized when grinding strong oxidizing property material and leads to material too fast loss greatly improves service life when mill ball grinding strong oxidizing property material.
Description
Technical field
The present invention relates to wear-resistant ball technical field more particularly to a kind of multi-layer wear-resistants that can be used for grinding strong oxidizing property material
Ball and preparation method thereof.
Background technique
Wear-resistant ball, a kind of crushing medium in ball mill, for the material in crushing mill, mill ball is broadly divided into
Two major classes, one is using chromium as the white cast-iron abbreviation chrome alloy cast iron of main alloy element, using chrome alloy cast iron as material
Cast grinding ball is known as chromium alloy iron casting abrading ball；Another kind is to be known as spheroidal graphite cast-iron mill by the cast grinding ball of material of spheroidal graphite cast-iron
Ball, wherein by being heat-treated the ductile iron abrading-ball abbreviation martensite nodular cast iron grinding ball that the matrix obtained is mainly bainite；
It is mainly the ductile iron abrading-ball abbreviation martensite nodular cast iron grinding ball of martensite by the matrix that heat treatment obtains.
A kind of high-strength abrasion-proof ball and preparation method thereof that Patent No. CN104099531B is disclosed, its composition of the invention
Include by mass fraction：C:0.02-0.06%, Mn:0.38-0.86%, W:0.01-0.03%, Si：0.53-0.81%, Ni：
0.21-0.45%, Cr：5-9.8%, Mo：0.11-0.15%, V：0.7-1.0%, Nb:0.2-0.5%, Ca：0.01-
0.038%, Zr：0.01-0.015%, Cu：0.01-0.03%, Zn：0.01-0.035%, S≤0.028%, P≤0.033%,
Surplus is Fe and inevitable impurity, and the preparation method of the high-strength abrasion-proof ball is divided into melting, heat treatment, pretreatment reaction nitrogen
The big step of arc cladding four, the invention make wear-resistant material hardness strength using TiCN as a kind of coating material of excellent combination property
Performance is further improved.Then wear-resistant ball is widely used in metallurgical mine, cement building material, thermal power generation, flue gas desulfurization, magnetic
The industries ball mills such as property material, chemical industry, water-coal-slurry, pellet, slag, superfine powder, flyash, calcium carbonate, quartz sand, some are waited for
The material of grinding contains strong oxidizing property, is oxidized easily when common mill ball is ground in air in the market, the iron on surface
Oxide layer wears no resistance, and makes mill ball when grinding strong oxidizing property material, material loss is big, and service life is short.How to solve
Loss when grinding strong oxidizing property material is big, and the short problem of service life is a technical barrier to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of multi-layer wear-resistant ball that can be used for grinding strong oxidizing property material and its preparation sides
Method, the present invention are achieved by the following technical programs：
A kind of multi-layer wear-resistant ball can be used for grinding strong oxidizing property material, including wear-resistant ball matrix and alloy coat are wear-resisting
The ingredient of ball matrix is made of following mass fraction：Cr 16.5-19.0%, C 2.3-3.5%, Mn 1.2-1.8%, Si
0.63-0.80%, Mo 0.11-0.15%, Cu 0.01-0.03%, Ni 0.25-0.48%, V 0.13-0.28%, Al
0.4-1.2%, Nb 0.28-0.46%, Bi 0.08-0.14%, S≤0.028%, P≤0.033%, surplus are Fe and can not
The impurity avoided.
Further, preparation method includes the following steps：
(1) raw material melting：The component materials for taking above-mentioned mass fraction composition, add raw materials into melting in middle frequency furnace, control
System refining smelting temperature is at 1620 DEG C -1640 DEG C；
(2) cast molding：After raw material all melting, the molten steel of melting is poured into ladle, and inovulant is added, sufficiently
When being reduced to 1440 DEG C -1460 DEG C to molten iron temperature after reaction, the molten iron injection wear-resistant ball mold in ladle is cast, is obtained
To wear-resistant ball matrix；
(3) matrix is heat-treated：When being air-cooled to 950 DEG C -980 DEG C after the completion of casting, it is put into holding furnace and carries out artificial aging
Wear-resistant ball matrix is quenched after artificial aging processing, is quickly quenching into 140 DEG C -160 DEG C, then by processing 4-5 hours
Tempering is heated to 480 DEG C -500 DEG C for the first time, and double tempering is then air-cooled to 430 DEG C -440 DEG C after being air-cooled to 160 DEG C -190 DEG C
It to room temperature, then is cleaned after being polished with sand paper with acetone and ethyl alcohol, takes out drying；
(4) preparation injection aluminium alloy：It takes during silumin is put into jet deposition intermediate frequency furnace, is heated to 2080
DEG C -2230 DEG C melt silumin；
(5) alloy-layer is sprayed：It, will be from leading using high pressure pure nitrogen gas by the silumin melt of fusing injection catheter
The silumin melt of liquid pipe outflow is crushed, is atomized, on the wear-resistant ball matrix after high speed deposition to heat treatment；
(6) coating is heat-treated：Wear-resistant ball after spraying coating is put into holding furnace, is 220-240 DEG C in temperature
Quenching obtains the multi-layer wear-resistant ball that can be used for grinding strong oxidizing property material after ageing treatment 3-4 hours.
Further, inovulant described in step 2 be 75SiFe inovulant, Ca-Ba inovulant, Ca-Ba-Sb inovulant wherein
One kind.
Further, it is 6%-8% nitric acid sodium salt solution that hardening media described in step 3, which is mass fraction, temperature before quenching
Degree is 40 DEG C, and average hardening heat is 680-720 DEG C/S.
Further, the silumin by following mass fraction at being grouped as：22%Si, 4.5%Fe, 4.5%
The Al of Cu, 1.5%Mg and surplus.
Further, jet deposition described in step 5 is completed on high vacuum high-temperature injection former, and atomization gas is
High pressure pure nitrogen gas, atomizing pressure 1.5-2.5MPa, receiving distance is 350-450mm, coating layer thickness 0.3-1.2mm.
Further, the hardening media of quenching described in step 6 be No. 3 bobbin oil, average cooling rate be 120-160 DEG C/
S。
The present invention reduces what wear-resistant ball cast iron crystal boundary nocuousness was mingled with by the way that wear-resistant ball is carried out Metamorphism treatment and quenching treatment
Segregation improves the form, size and distribution of field trash, reduces stress collection and neutralizes formation of crack, improves the bond strength of crystal boundary, reach
The effect of intercrystalline strengthening makes the crystal grain being refined obtain thermal energy and grow up, generation office then by ageing treatment and double tempering
Portion's surrender, makes crystals generate microcosmic sliding, causes micro plastic deformation, and a part that promotes largely to misplace is pinned at point
On scattered impurity, another part is gathered on crystal grain boundary, so that combination is stronger between the crystal boundary of refinement.From macroscopically seeing not
Mill ball matrix is only set to have high-intensitive, high rigidity property, and its toughness is greatly improved.Pass through elevated pressure nitrogen again
It sprays and forms one layer of fine and close silumin layer on silumin to wear-resistant ball matrix, which not only effectively prevents
Mill ball inner base is grind strong oxidizing property material when, the drawbacks of being oxidized and lead to material too fast loss, and
Alloy-layer after Overheating Treatment also has stronger wearability and high rigidity, is carrying out the same of ageing treatment to alloyed layer
When, so that inner base is obtained the process of a lonneal, improves the intensity of wear-resistant ball and toughness further.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
Embodiment 1：
(1) raw material melting：By following weight constituent Cr 16.5%, C 2.3%, Mn 1.2%, Si 0.63%, Mo
0.11, Cu 0.01%, Ni 0.25%, V 0.138%, Al 0.4%, Nb 0.28%, Bi 0.08%, S 0.028%, P
0.033%, take the material compositions such as scrap iron, carburant, useless ferrochrome, useless manganese iron, metallic copper that melting in middle frequency furnace, control refining is added
Smelting temperature is at 1620 DEG C；
(2) cast molding：After raw material all melting, the molten steel of melting is poured into ladle, and 75SiFe is added and breeds
Agent when being sufficiently reduced to 1440 DEG C to molten iron temperature after reaction, the molten iron injection wear-resistant ball mold in ladle is cast, is obtained
To wear-resistant ball matrix；
(3) matrix is heat-treated：When being air-cooled to 950 DEG C after the completion of casting, it is small to be put into progress artificial aging processing 4 in holding furnace
When, by wear-resistant ball matrix with 40 DEG C after artificial aging processing, mass fraction is that 6% nitric acid sodium salt solution is quenched, and control is flat
Equal hardening heat is 680 DEG C/S, is quickly quenching into 140 DEG C, and then tempering is heated to 480 DEG C for the first time, two after being air-cooled to 160 DEG C
It is secondary to be tempered to 430 DEG C, it is then air-cooled to room temperature, then cleaned after being polished with sand paper with acetone and ethyl alcohol, takes out drying；
(4) preparation injection aluminium alloy：Taking mass fraction is 22%Si, 4.5%Fe, 4.5%Cu, 1.5%Mg and surplus
The silumin of Al be put into jet deposition intermediate frequency furnace, be heated to 2080 DEG C and melt silumin；
(5) alloy-layer is sprayed：It, will be from leading using high pressure pure nitrogen gas by the silumin melt of fusing injection catheter
The silumin melt of liquid pipe outflow is crushed, is atomized in the case where atomizing pressure is 1.5MPa, and jet port is from mill ball matrix
Distance be 350mm under, carry out high speed deposition to heat treatment after wear-resistant ball matrix on, obtain with a thickness of 0.3mm alloy apply
Layer；
(6) coating is heat-treated：Wear-resistant ball after spraying coating is put into holding furnace, is 220 DEG C of timeliness in temperature
Processing is quenched after 3 hours with No. 3 bobbin oil, and controlling average cooling rate is 120 DEG C/S to get to can be used for grinding strong oxygen
The multi-layer wear-resistant ball of the property changed material.
Embodiment 2：
(1) raw material melting：By following weight constituent Cr 19%, C 3.5%, Mn 1.8%, Si 0.8%, Mo
0.15%, Cu 0.03%, Ni 0.48%, V 0.28%, Al 1.2%, Nb 0.46%, Bi 0.14%, S 0.020%, P
0.030%, take the material compositions such as scrap iron, carburant, useless ferrochrome, useless manganese iron, metallic copper that melting in middle frequency furnace, control refining is added
Smelting temperature is at 1620 DEG C；
(2) cast molding：After raw material all melting, the molten steel of melting is poured into ladle, and 75SiFe is added and breeds
Agent when being sufficiently reduced to 1440 DEG C to molten iron temperature after reaction, the molten iron injection wear-resistant ball mold in ladle is cast, is obtained
To wear-resistant ball matrix；
(3) matrix is heat-treated：When being air-cooled to 950 DEG C after the completion of casting, it is small to be put into progress artificial aging processing 4 in holding furnace
When, by wear-resistant ball matrix with 40 DEG C after artificial aging processing, mass fraction is that 6% nitric acid sodium salt solution is quenched, and control is flat
Equal hardening heat is 680 DEG C/S, is quickly quenching into 140 DEG C, and then tempering is heated to 480 DEG C for the first time, two after being air-cooled to 160 DEG C
It is secondary to be tempered to 430 DEG C, it is then air-cooled to room temperature, then cleaned after being polished with sand paper with acetone and ethyl alcohol, takes out drying；
(4) preparation injection aluminium alloy：Taking mass fraction is 22%Si, 4.5%Fe, 4.5%Cu, 1.5%Mg and surplus
The silumin of Al be put into jet deposition intermediate frequency furnace, be heated to 2080 DEG C and melt silumin；
(5) alloy-layer is sprayed：It, will be from leading using high pressure pure nitrogen gas by the silumin melt of fusing injection catheter
The silumin melt of liquid pipe outflow is crushed, is atomized in the case where atomizing pressure is 1.5MPa, and jet port is from mill ball matrix
Distance be 350mm under, carry out high speed deposition to heat treatment after wear-resistant ball matrix on, obtain with a thickness of 0.3mm alloy apply
Layer；
(6) coating is heat-treated：Wear-resistant ball after spraying coating is put into holding furnace, is 220 DEG C of timeliness in temperature
Processing is quenched after 3 hours with No. 3 bobbin oil, and controlling average cooling rate is 120 DEG C/S to get to can be used for grinding strong oxygen
The multi-layer wear-resistant ball of the property changed material.
Embodiment 3：
(1) raw material melting：By following weight constituent Cr 16.5%, C 2.3%, Mn 1.2%, Si 0.63%, Mo
0.11, Cu 0.01%, Ni 0.25%, V 0.138%, Al 0.4%, Nb 0.28%, Bi 0.08%, S 0.028%, P
0.033%, take the material compositions such as scrap iron, carburant, useless ferrochrome, useless manganese iron, metallic copper that melting in middle frequency furnace, control refining is added
Smelting temperature is at 1640 DEG C；
(2) cast molding：After raw material all melting, the molten steel of melting is poured into ladle, and 75SiFe is added and breeds
Agent when being sufficiently reduced to 1460 DEG C to molten iron temperature after reaction, the molten iron injection wear-resistant ball mold in ladle is cast, is obtained
To wear-resistant ball matrix；
(3) matrix is heat-treated：When being air-cooled to 980 DEG C after the completion of casting, it is small to be put into progress artificial aging processing 5 in holding furnace
When, by wear-resistant ball matrix with 40 DEG C after artificial aging processing, mass fraction is that 8% nitric acid sodium salt solution is quenched, and control is flat
Equal hardening heat is 720 DEG C/S, is quickly quenching into 160 DEG C, and then tempering is heated to 500 DEG C for the first time, two after being air-cooled to 190 DEG C
It is secondary to be tempered to 440 DEG C, it is then air-cooled to room temperature, then cleaned after being polished with sand paper with acetone and ethyl alcohol, takes out drying；
(4) preparation injection aluminium alloy：Taking mass fraction is 22%Si, 4.5%Fe, 4.5%Cu, 1.5%Mg and surplus
The silumin of Al be put into jet deposition intermediate frequency furnace, be heated to 2230 DEG C and melt silumin；
(5) alloy-layer is sprayed：It, will be from leading using high pressure pure nitrogen gas by the silumin melt of fusing injection catheter
The silumin melt of liquid pipe outflow is crushed, is atomized in the case where atomizing pressure is 2.5MPa, and jet port is from mill ball matrix
Distance be 350mm under, carry out high speed deposition to heat treatment after wear-resistant ball matrix on, obtain with a thickness of 1.2mm alloy apply
Layer；
(6) coating is heat-treated：Wear-resistant ball after spraying coating is put into holding furnace, is 240 DEG C of timeliness in temperature
Processing is quenched after 4 hours with No. 3 bobbin oil, and controlling average cooling rate is 160 DEG C/S to get to can be used for grinding strong oxygen
The multi-layer wear-resistant ball of the property changed material.
Embodiment 4：
(1) raw material melting：By following weight constituent Cr 16.5%, C 2.3%, Mn 1.2%, Si 0.63%, Mo
0.11, Cu 0.01%, Ni 0.25%, V 0.138%, Al 0.4%, Nb 0.28%, Bi 0.08%, S 0.028%, P
0.033%, take the material compositions such as scrap iron, carburant, useless ferrochrome, useless manganese iron, metallic copper that melting in middle frequency furnace, control refining is added
Smelting temperature is at 1640 DEG C；
(2) cast molding：After raw material all melting, the molten steel of melting is poured into ladle, and 75SiFe is added and breeds
Agent when being sufficiently reduced to 1460 DEG C to molten iron temperature after reaction, the molten iron injection wear-resistant ball mold in ladle is cast, is obtained
To wear-resistant ball matrix；
(3) matrix is heat-treated：When being air-cooled to 980 DEG C after the completion of casting, it is small to be put into progress artificial aging processing 5 in holding furnace
When, by wear-resistant ball matrix with 40 DEG C after artificial aging processing, mass fraction is that 8% nitric acid sodium salt solution is quenched, and control is flat
Equal hardening heat is 720 DEG C/S, is quickly quenching into 160 DEG C, and then tempering is heated to 500 DEG C for the first time, two after being air-cooled to 190 DEG C
It is secondary to be tempered to 440 DEG C, it is then air-cooled to room temperature, then cleaned after being polished with sand paper with acetone and ethyl alcohol, takes out drying；
(4) preparation injection aluminium alloy：Taking mass fraction is 22%Si, 4.5%Fe, 4.5%Cu, 1.5%Mg and surplus
The silumin of Al be put into jet deposition intermediate frequency furnace, be heated to 2230 DEG C and melt silumin；
(5) alloy-layer is sprayed：It, will be from leading using high pressure pure nitrogen gas by the silumin melt of fusing injection catheter
The silumin melt of liquid pipe outflow is crushed, is atomized in the case where atomizing pressure is 2.5MPa, and jet port is from mill ball matrix
Distance be 450mm under, carry out high speed deposition to heat treatment after wear-resistant ball matrix on, obtain with a thickness of 0.3mm alloy apply
Layer；
(6) coating is heat-treated：Wear-resistant ball after spraying coating is put into holding furnace, is 240 DEG C of timeliness in temperature
Processing is quenched after 3 hours with No. 3 bobbin oil, and controlling average cooling rate is 160 DEG C/S to get to can be used for grinding strong oxygen
The multi-layer wear-resistant ball of the property changed material.
Embodiment 5：
(1) raw material melting：By following weight constituent Cr 16.5%, C 2.3%, Mn 1.2%, Si 0.63%, Mo
0.11, Cu 0.01%, Ni 0.25%, V 0.138%, Al 0.4%, Nb 0.28%, Bi 0.08%, S 0.028%, P
0.033%, take the material compositions such as scrap iron, carburant, useless ferrochrome, useless manganese iron, metallic copper that melting in middle frequency furnace, control refining is added
Smelting temperature is at 1640 DEG C；
(2) cast molding：After raw material all melting, the molten steel of melting is poured into ladle, and 75SiFe is added and breeds
Agent when being sufficiently reduced to 1460 DEG C to molten iron temperature after reaction, the molten iron injection wear-resistant ball mold in ladle is cast, is obtained
To wear-resistant ball matrix；
(3) matrix is heat-treated：When being air-cooled to 980 DEG C after the completion of casting, it is small to be put into progress artificial aging processing 4 in holding furnace
When, by wear-resistant ball matrix with 40 DEG C after artificial aging processing, mass fraction is that 6% nitric acid sodium salt solution is quenched, and control is flat
Equal hardening heat is 680 DEG C/S, is quickly quenching into 160 DEG C, and then tempering is heated to 500 DEG C for the first time, two after being air-cooled to 190 DEG C
It is secondary to be tempered to 440 DEG C, it is then air-cooled to room temperature, then cleaned after being polished with sand paper with acetone and ethyl alcohol, takes out drying；
(4) preparation injection aluminium alloy：Taking mass fraction is 22%Si, 4.5%Fe, 4.5%Cu, 1.5%Mg and surplus
The silumin of Al be put into jet deposition intermediate frequency furnace, be heated to 2230 DEG C and melt silumin；
(5) alloy-layer is sprayed：It, will be from leading using high pressure pure nitrogen gas by the silumin melt of fusing injection catheter
The silumin melt of liquid pipe outflow is crushed, is atomized in the case where atomizing pressure is 2.5MPa, and jet port is from mill ball matrix
Distance be 350mm under, carry out high speed deposition to heat treatment after wear-resistant ball matrix on, obtain with a thickness of 1.2mm alloy apply
Layer；
(6) coating is heat-treated：Wear-resistant ball after spraying coating is put into holding furnace, is 220 DEG C of timeliness in temperature
Processing is quenched after 3 hours with No. 3 bobbin oil, and controlling average cooling rate is 120 DEG C/S to get to can be used for grinding strong oxygen
The multi-layer wear-resistant ball of the property changed material.
Contrast groups 1：
(1) raw material melting：By following weight constituent Cr 16.5%, C 2.3%, Mn 1.2%, Si 0.63%, Mo
0.11, Cu 0.01%, Ni 0.25%, V 0.138%, Al 0.4%, Nb 0.28%, Bi 0.08%, S 0.028%, P
0.033%, take the material compositions such as scrap iron, carburant, useless ferrochrome, useless manganese iron, metallic copper that melting in middle frequency furnace, control refining is added
Smelting temperature is at 1620 DEG C；
(2) cast molding：After raw material all melting, the molten steel of melting is poured into ladle, and 75SiFe is added and breeds
Agent when being sufficiently reduced to 1440 DEG C to molten iron temperature after reaction, the molten iron injection wear-resistant ball mold in ladle is cast, is obtained
To wear-resistant ball matrix；
(3) matrix is heat-treated：When being air-cooled to 950 DEG C after the completion of casting, it is small to be put into progress artificial aging processing 4 in holding furnace
When, by wear-resistant ball matrix with 40 DEG C after artificial aging processing, mass fraction is that 6% nitric acid sodium salt solution is quenched, and control is flat
Equal hardening heat is 680 DEG C/S, is quickly quenching into 140 DEG C, and then tempering is heated to 480 DEG C for the first time, two after being air-cooled to 160 DEG C
It is secondary to be tempered to 430 DEG C, it is then air-cooled to room temperature, then cleaned after being polished with sand paper with acetone and ethyl alcohol, taking-up is dried to obtain wear-resisting
Ball matrix.
It the wear-resistant ball of Example 1 to embodiment 5 and contrast groups 1 each 20, weighs to each 20 wear-resistant balls, first
Every group of wear-resistant ball is put into ball mill, 60 grindings are carried out to potassium permanganate solid, 40min is ground every time, after experiment
The wear-resistant ball for taking out every group is weighed and is recorded to 20 mill balls again after cleaning and drying, then takes the implementation of same condition
Example 1 to wear-resistant ball 20 of embodiment 5 and contrast groups 1, be put into after weighing to it in ball mill to pellet solid into
Row 60 times grindings, grind 40min every time, every group of wear-resistant ball are taken out after experiment, grind again to 20 after cleaning and drying
Ball is weighed and is recorded, the wear-resistant ball wear rate data such as the following table 1.
Table 1
| Experiment number reference quantity | Wear rate % (potassium permanganate) | Wear rate % (pellet) |
| Embodiment 1 | 0.21 | 0.20 |
| Embodiment 2 | 0.22 | 0.23 |
| Embodiment 3 | 0.17 | 0.20 |
| Embodiment 4 | 0.23 | 0.26 |
| Embodiment 5 | 0.26 | 0.14 |
| Documents 1 | 2.47 | 0.24 |
When can be seen that not by above-mentioned experimental result to its grinding strong oxidizing property material of the wear-resistant ball of alloy coat,
Wear rate is higher, and when grinding pellet (non-strong oxidizing property material), and wear rate is identical with multi-layer wear-resistant ball, therefore of the invention more
Layer wear-resistant ball can be used for grinding strong oxidizing property material.
From the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to aforementioned implementation
Invention is explained in detail for example, those skilled in the art should understand that：It still can be to aforementioned each reality
Technical solution documented by example is applied to modify or equivalent replacement of some of the technical features；And these modification or
Person's replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of multi-layer wear-resistant ball that can be used for grinding strong oxidizing property material, including wear-resistant ball matrix and alloy coat, feature
It is, the ingredient of wear-resistant ball matrix is made of following mass fraction：Cr 16.5-19.0%, C 2.3-3.5%, Mn 1.2-
1.8%, Si 0.63-0.80%, Mo 0.11-0.15%, Cu 0.01-0.03%, Ni 0.25-0.48%, V 0.13-
0.28%, Al 0.4-1.2%, Nb 0.28-0.46%, Bi 0.08-0.14%, S≤0.028%, P≤0.033%, surplus
For Fe and inevitable impurity.
2. the preparation method of the multi-layer wear-resistant ball according to claim 1 that can be used for grinding strong oxidizing property material, feature
It is, includes the following steps：
(1) raw material melting：The component materials for taking above-mentioned mass fraction composition add raw materials into melting in middle frequency furnace, control refining
Smelting temperature is at 1620 DEG C -1640 DEG C；
(2) cast molding：After raw material all melting, the molten steel of melting is poured into ladle, and inovulant is added, is sufficiently reacted
When being reduced to 1440 DEG C -1460 DEG C to molten iron temperature afterwards, the molten iron injection wear-resistant ball mold in ladle is cast, is obtained resistance to
Abrading-ball matrix；
(3) matrix is heat-treated：When being air-cooled to 950 DEG C -980 DEG C after the completion of casting, it is put into progress artificial aging processing in holding furnace
4-5 hours, wear-resistant ball matrix is quenched after artificial aging processing, is quickly quenching into 140 DEG C -160 DEG C, then first
Secondary tempering is heated to 480 DEG C -500 DEG C, and after being air-cooled to 160 DEG C -190 DEG C then double tempering is air-cooled to room to 430 DEG C -440 DEG C
Temperature, then cleaned after being polished with sand paper with acetone and ethyl alcohol, take out drying；
(4) preparation injection aluminium alloy：Take during silumin is put into jet deposition intermediate frequency furnace, be heated to 2080 DEG C-
2230 DEG C melt silumin；
(5) alloy-layer is sprayed：The silumin melt of fusing is injected in catheter, it will be from catheter using high pressure pure nitrogen gas
The silumin melt of outflow is crushed, is atomized, on the wear-resistant ball matrix after high speed deposition to heat treatment；
(6) coating is heat-treated：Wear-resistant ball after spraying coating is put into holding furnace, is 220-240 DEG C of timeliness in temperature
Quenching obtains the multi-layer wear-resistant ball that can be used for grinding strong oxidizing property material after processing 3-4 hours.
3. the multi-layer wear-resistant ball according to claim 2 that can be used for grinding strong oxidizing property material, which is characterized in that step 2
The inovulant is that 75SiFe inovulant, Ca-Ba inovulant, Ca-Ba-Sb inovulant are one such.
4. the multi-layer wear-resistant ball according to claim 2 that can be used for grinding strong oxidizing property material, which is characterized in that step 3
The hardening media is that mass fraction is 6%-8% nitric acid sodium salt solution, and temperature is 40 DEG C before quenching, and average hardening heat is
680-720℃/S。
5. the multi-layer wear-resistant ball according to claim 2 that can be used for grinding strong oxidizing property material, which is characterized in that the height
Silico-aluminum by following mass fraction at being grouped as：The Al of 22%Si, 4.5%Fe, 4.5%Cu, 1.5%Mg and surplus.
6. the multi-layer wear-resistant ball according to claim 2 that can be used for grinding strong oxidizing property material, which is characterized in that step 5
The jet deposition is completed on high vacuum high-temperature injection former, and atomization gas is high pressure pure nitrogen gas, and atomizing pressure is
1.5-2.5MPa, receiving distance is 350-450mm, coating layer thickness 0.3-1.2mm.
7. the cladding aluminium wear-resistant ball according to claim 2 that can be used for grinding strong oxidizing property material, which is characterized in that step
The hardening media of 6 quenchings is No. 3 bobbin oil, and average cooling rate is 120-160 DEG C/S.
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| CN112662981A (en) * | 2020-11-26 | 2021-04-16 | 安徽瑞泰新材料科技有限公司 | High-hardness coating wear-resistant ball and preparation method thereof |
| CN113699436A (en) * | 2021-08-26 | 2021-11-26 | 浙江振兴石化机械有限公司 | Processing technology of wear-resistant and corrosion-resistant ball |
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Application publication date: 20181120 |