CN104087867A - High wearing resistance anti-oxidation wear-resisting ball for ball mill - Google Patents
High wearing resistance anti-oxidation wear-resisting ball for ball mill Download PDFInfo
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- CN104087867A CN104087867A CN201410376984.3A CN201410376984A CN104087867A CN 104087867 A CN104087867 A CN 104087867A CN 201410376984 A CN201410376984 A CN 201410376984A CN 104087867 A CN104087867 A CN 104087867A
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- 230000003064 anti-oxidating effect Effects 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 47
- 230000008569 process Effects 0.000 claims abstract description 40
- 238000005121 nitriding Methods 0.000 claims abstract description 19
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 18
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 10
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 9
- 229910052786 argon Inorganic materials 0.000 claims abstract description 9
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 9
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 9
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 9
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 9
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 9
- 238000005253 cladding Methods 0.000 claims description 54
- 238000009413 insulation Methods 0.000 claims description 49
- 238000002203 pretreatment Methods 0.000 claims description 40
- 238000002844 melting Methods 0.000 claims description 37
- 230000008018 melting Effects 0.000 claims description 37
- 230000003078 antioxidant effect Effects 0.000 claims description 30
- 239000003963 antioxidant agent Substances 0.000 claims description 29
- 238000005299 abrasion Methods 0.000 claims description 28
- 238000007669 thermal treatment Methods 0.000 claims description 26
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 24
- 238000010791 quenching Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 20
- 238000000576 coating method Methods 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 229910045601 alloy Inorganic materials 0.000 claims description 17
- 239000000956 alloy Substances 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 17
- 239000008187 granular material Substances 0.000 claims description 17
- 238000005496 tempering Methods 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000001291 vacuum drying Methods 0.000 claims description 14
- 238000004372 laser cladding Methods 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 8
- 239000010955 niobium Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 6
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 6
- 229910000592 Ferroniobium Inorganic materials 0.000 claims description 6
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 6
- 108010038629 Molybdoferredoxin Proteins 0.000 claims description 6
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 6
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 claims description 6
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 238000010849 ion bombardment Methods 0.000 claims description 6
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 6
- ZFGFKQDDQUAJQP-UHFFFAOYSA-N iron niobium Chemical compound [Fe].[Fe].[Nb] ZFGFKQDDQUAJQP-UHFFFAOYSA-N 0.000 claims description 6
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 abstract 4
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 abstract 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 235000006708 antioxidants Nutrition 0.000 description 20
- 239000000463 material Substances 0.000 description 8
- 239000013078 crystal Substances 0.000 description 7
- 239000011575 calcium Substances 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- 238000003672 processing method Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- 238000004381 surface treatment Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a high wearing resistance anti-oxidation wear-resisting ball for a ball mill. The ball comprises C, Mn, Si, Ni, Cr, Mo, V, Nb, Ca, Zr, Cu, S, P and the balance of Fe and inevitable impurities. Laser fusion covering and nitriding processes are adopted to modify the surface of the wear-resisting ball; the fusion covering powder comprises Mn, Cr, Si, Al2O3, Al, Co, Fe and nano CeO2; the fusion covering process comprises parameters that single-pass scanning is performed, argon is adopted to protect a laser pond, the power is 1.5-2.0KW, the diameter of a light panel is 0.2-0.7mm, and the fusion covering speed is 2-4mm/s; the nitriding process comprises parameters that the glow voltage is 0.2-0.58KV, the duty cycle is 35-45%, the ammonia flow is 0.05-0.08m<3>/h, the furnace pressure is 220-250Pa, the temperature is 400-450 DEG C and the time is 3-5 hours. The wear-resisting ball disclosed by the invention is excellent in oxidation resistance, wearing resistance and toughness.
Description
Technical field
The present invention relates to high-abrasive material technical field, relate in particular to high abrasion antioxidant wear-resistant ball for a kind of ball mill.
Background technology
Wear-resistant ball is a kind of crushing medium for ball mill, material for crushing mill, has been widely used in the industry ball mills such as metallurgical mine, cement building material, thermal power generation, flue gas desulfurization, magneticsubstance, chemical industry, coal water slurry, pellet, slag, ultrafine powder, flyash, calcium carbonate, quartz sand at present.
Wear-resistant ball should have following character as a kind of lost material: the hardness that (1) is high, and the matrix of high rigidity can be resisted the micro cutting effect of abrasive particle to matrix, has embodied to a certain extent the wear resistance of material; (2) higher plasticity and toughness, strain fatigue drag, brittle failure drag and delamination fatigue resistance, high plasticity and toughness can reduce or suppress germinating and the expansion of crackle, particularly under the operating mode of HI high impact effect, have excellent anti-rupture failure ability; (3) high hardening capacity, the high guarantee of hardening capacity material monolithic homogeneous microstructure, stable performance under large size condition of material, wear resistance must be given assurance.
Laser melting coating refers to that with different adding material modes, place selecteed coated material on by cladding matrix surface makes it to melt with matrix surface skim through laser irradiation simultaneously, and it is extremely low after rapid solidification, to form extent of dilution, become the top coat of metallurgical binding with matrix, significantly improve the wear-resisting of substrate surface, anti-corrosion, heat-resisting, the processing method of anti-oxidant and electrical specification, thereby reach the object of surface modification or reparation, both met the requirement to material surface specified property, saved again a large amount of noble elements, be applied in wear-resistant ball field and can improve the wear-resisting of wear-resistant ball, anti-corrosion, heat-resisting, oxidation-resistance.
Nitriding is in certain medium, to make nitrogen-atoms infiltrate the chemical heat treatment process of workpiece surface at a certain temperature.Common have liquid nitriding, gas nitriding, an ionitriding.Conventional is gas nitriding and ionitriding.The nitrogen infiltrating in steel from outward appearance to inner essence forms the nitrided iron of different nitrogen contents on the one hand from iron, alloying element in steel is combined and is formed various alloy nitrides on the one hand, these nitride have very high hardness, thermostability and very high dispersity, thereby can make the steel part after nitriding obtain high surface hardness, wear resistance, fatigue strength, seizure resistance, Chinese People's Anti-Japanese Military and Political College's gas and superheated vapour corrosive power, anti-temper softening ability, and reduce notch sensitivity.Be applied in surface hardness, wear resistance, the fatigue strength that in wear-resistant ball, can improve wear-resistant ball, improve the performance of wear-resistant ball.
The oxidation-resistance of existing wear-resistant ball is not good enough, can not meet the requirement of modern society to wear-resistant ball, and therefore, it is the hot issue of studying at present that the technological process of selecting suitable composition, control to prepare obtains the wear-resistant ball that antioxidant property is good, over-all properties is strong.
Summary of the invention
The present invention proposes high abrasion antioxidant wear-resistant ball for a kind of ball mill, this wear-resistant ball has excellent oxidation-resistance, has good wear resistance, hardness and impelling strength simultaneously.
The present invention proposes high abrasion antioxidant wear-resistant ball for a kind of ball mill, its moiety comprises by massfraction: C:1.3-2.0%, Mn:0.12-0.46%, Si:0.53-0.81%, Ni:0.21-0.45%, Cr:4.2-5.95%, Mo:1.1-1.5%, 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%, S≤0.028%, P≤0.033%, surplus is Fe and inevitable impurity;
According to above-mentioned moiety proportioning, ball mill is prepared according to following technique with high abrasion antioxidant wear-resistant ball:
S1, melting: steel scrap is joined in medium frequency induction melting furnace, and be heated to 1500-1520 ℃, after insulation 20-45min, add ferrochrome, molybdenum-iron, vanadium iron, ferro-niobium, add until completely melted ferrosilicon and ferromanganese, be warming up to 1530-1570 ℃ and add nickelalloy, silicocalcium, ferrozirconium after being heated to melt completely, each raw material obtains molten steel after melting skim completely, cast, die sinking after molten steel solidifies completely, stove is chilled to room temperature and obtains wear-resistant ball base;
S2, thermal treatment: the wear-resistant ball base obtaining in S1 is processed through normalizing, quenching and high tempering successively; In normalizing treatment, temperature is risen to 980-1030 ℃, insulation 50-80min, air cooling is to room temperature; In quench treatment, temperature is risen to 800-820 ℃, insulation 30-75min, water-cooled is to room temperature; In high tempering is processed, temperature is risen to 500-530 ℃, insulation 130-150min, water-cooled is to room temperature, thereby obtains thermal treatment ball base;
S3, the pre-treatment of thermal treatment ball base: by after the thermal treatment ball base sandblast obtaining in S2, with polishing with abrasive paper for metallograph after washing with acetone, after cleaning with acetone, with dehydrated alcohol, clean again, be positioned in vacuum drying oven, regulating the temperature of loft drier is 55-75 ℃, after insulation 3-4h, obtains pre-treatment ball base;
Pre-treatment before S4, cladding: add 1-3wt% nano Ce O in powdered alloy
2after put into ball mill ball milling 3-5h, put into afterwards vacuum drying oven, regulating the temperature of loft drier is 50-85 ℃, insulation 3-5h obtains composite granule; With plasma, composite granule is sprayed on to the surface of pre-treatment ball base, thickness is that 0.1-0.2mm obtains the front pre-treatment ball base of cladding; Described powdered alloy comprises by weight: the Mn of 10-15 part, the Si of the Cr of 5-10 part, 1-3 part, the Al of 0.5-1.3 part
2o
3, the Al of 2-3 part is, the Co of 1-2 part, 75-82 part Fe;
S5, cladding: pre-treatment ball base before the cladding obtaining in S4 is put into laser cladding equipment and carry out laser melting coating, obtain cladding wear-resistant ball after cooling; Wherein the processing parameter of laser melting coating is as follows: single-channel scanning, use argon shield laser cell, and laser power is set to 1.5-2.0KW, and tabula rasa diameter is 0.2-0.7mm, and cladding speed is 2-4mm/s;
S6, nitriding: the cladding wear-resistant ball obtaining in S5 is put into Double-heating multi-functional ion-bombardment and carry out nitridation process and obtain described wear-resistant ball, the parameter of described nitridation process is specific as follows: glow voltage: 0.2-0.58KV, dutycycle: 35-45%, ammonia flow: 0.05-0.08m
3/ h, furnace pressure: 220-250Pa, temperature: 400-450 ℃, time: 3-5h.
Preferably, high abrasion antioxidant wear-resistant ball for above-mentioned ball mill, its moiety comprises by massfraction: C:1.5%, Mn:0.35%, Si:0.73%, Ni:0.42%, Cr:5.56%, Mo:1.36%, V:0.79%, Nb:0.36%, Ca:0.026%, Zr:0.014%, Cu:0.02%, S:0.02%, P:0.031%, surplus is Fe and inevitable impurity.
Preferably, in S2, in normalizing treatment, temperature is risen in the process of 980-1030 ℃, temperature rise rate reduces with the rising of temperature.
Preferably, in S2, in quench treatment, temperature is risen to 800-820 ℃, insulation 30-75min, water-cooled is to the process of room temperature, and speed of cooling reduces with the reduction of temperature
Preferably, in S2, in normalizing treatment, temperature is risen to 1015 ℃, insulation 66min, air cooling is to room temperature; In quench treatment, temperature is risen to 815 ℃, insulation 63min, water-cooled is to room temperature; In high tempering process, temperature is risen to 521 ℃, insulation 138min, water-cooled is to room temperature.
Preferably, in S4, in powdered alloy, add 2wt% nano Ce O
2after put into ball mill ball milling 4h, put into afterwards vacuum drying oven, regulating the temperature of loft drier is 80 ℃, insulation 4h obtains composite granule; With plasma, composite granule is sprayed on to the surface of pre-treatment ball base, thickness is that 0.15mm obtains the front pre-treatment ball base of cladding; Described powdered alloy comprises by weight: the Mn of 14 parts, the Cr of 8 parts, the Si of 2.5 parts, the Al of 1.0 parts
2o
3, Al, the Co of 1.3 parts, the Fe of 78 parts of 2.2 parts.
Preferably, in S5, the processing parameter of laser melting coating is as follows: single-channel scanning, use argon shield laser cell, and laser power is set to 1.7KW, and tabula rasa diameter is 0.5mm, and cladding speed is 4mm/s.
Preferably, in S6, the parameter of described nitridation process is specific as follows: glow voltage: 0.5KV, and dutycycle: 40%, ammonia flow: 0.06m
3/ h, furnace pressure: 235Pa, temperature: 440 ℃, the time: 4h.
Ball mill of the present invention, with in high abrasion antioxidant wear-resistant ball thermal treatment process, first carries out normalizing treatment, refinement crystal grain, make microstructure homogenization simultaneously, eliminated treeing and overheated structure, removed the internal stress of wear-resistant ball, the hardness of wear-resistant ball is provided; Carried out afterwards quenching technology, in the process of quench cooled, the cooling initial stage, in the most unsettled scope of supercooled austenite, carry out fast cooling, adopt afterwards the rate of temperature fall reducing, guarantee to obtain the martensitic internal stress simultaneously reducing in wear-resistant ball, prevent distortion and cracking; After quenching, carry out high tempering, eliminate the residual stress producing when wear-resistant ball quenches, reduce fragility, improve its toughness, prevent its distortion and cracking.
In the preparation technology of ball mill of the present invention with high abrasion antioxidant wear-resistant ball, adopted two kinds of techniques of laser melting coating and nitriding to carry out surface modification treatment to wear-resistant ball.In the process of laser melting coating, in composite granule used, added nano Ce O
2, on the one hand, nano Ce O
2under the stirring action in molten bath, evenly, being distributed in the liquid metal that cladding forms of disperse, as the core of heterogeneous nucleation, increased substantially liquid metal nucleation rate; On the one hand, nano Ce O
2there is large specific surface area, be attached to liquid-solid interface forward position, hindered the crystal growth after forming core, refinement laser cladding layer tissue; On the one hand, add nano Ce O
2after, changed the weave construction of cladding layer, refinement crystal grain, reduced a large amount of precipitates that the inner crystal boundary of microstructure of surface cladding layer occurs; On the other hand, under the condition of high temperature, nano Ce O
2the selective oxidation that can accelerate Cr element in microstructure of surface cladding layer, has effectively suppressed Cr
2o
3volatilization, improved the tack of microstructure of surface cladding layer and wear-resistant ball, in cladding layer, the refinement of crystal grain is conducive to the release of thermal stresses and growth stress, has improved the antistripping ability of cladding layer, at high temperature reduce the interior oxidation of wear-resistant ball, strengthened the high thermal resistance of wear-resistant ball.
Wear-resistant ball after having adopted nitridation process to laser melting coating in the preparation technology of ball mill of the present invention with high abrasion antioxidant wear-resistant ball has carried out surface treatment, laser cladding layer grain refining after nitriding, crystal boundary and dislocation increase, for the formation of nitride provides extra motivating force, reduced the standard free energy that nitrogenize forms mutually, thereby make laser cladding layer form nitride in the temperature rise period of nitriding, increased the degree of depth of nitriding, in the process of nitriding, it is lower that N atoms along grain boundary spreads required activation energy, the diffusion that the crystal boundary of laser cladding layer is N atom provides more diffusion admittance, improved the velocity of diffusion of N atom, nitriding is had to certain katalysis, make the coating structure densification obtaining, inner flawless and hole, be combined with wear-resistant ball well, improved the oxidation-resistance of wear-resistant ball, improved the shock resistance of wear-resistant ball simultaneously, thermotolerance and hardness.
Ball mill of the present invention is with in high abrasion antioxidant wear-resistant ball, by selecting suitable raw material and proportioning, optimize thermal treatment process, and adopt laser melting coating and nitridation process to carry out modification to the surface of wear-resistant ball, obtained the high abrasion antioxidant wear-resistant ball for ball mill of good combination property.
Embodiment
Below by specific embodiment, technical scheme of the present invention is elaborated; should understand; embodiment is only for the present invention is described, rather than for the present invention is limited, and any modification of making on basis of the present invention, is equal to replacement etc. all in protection scope of the present invention.
Embodiment 1
High abrasion antioxidant wear-resistant ball for ball mill of the present invention, its moiety comprises by massfraction: C:1.3%, Mn:0.33%, Si:0.53%, Ni:0.32%, Cr:4.2%, Mo:1.3%, V:1.0%, Nb:0.3%, Ca:0.038%, Zr:0.013%, Cu:0.03%, S:0.022%, P:0.031%, surplus is Fe and inevitable impurity;
According to above-mentioned moiety proportioning, ball mill is prepared according to following technique with high abrasion antioxidant wear-resistant ball:
S1, melting: steel scrap is joined in medium frequency induction melting furnace, and be heated to 1520 ℃, after insulation 20min, add ferrochrome, molybdenum-iron, vanadium iron, ferro-niobium, add until completely melted ferrosilicon and ferromanganese, be warming up to 1570 ℃ and add nickelalloy, silicocalcium, ferrozirconium after being heated to melt completely, each raw material obtains molten steel after melting skim completely, cast, die sinking after molten steel solidifies completely, stove is chilled to room temperature and obtains wear-resistant ball base;
S2, thermal treatment: the wear-resistant ball base obtaining in S1 is processed through normalizing, quenching and high tempering successively; In normalizing treatment, temperature is risen to 1006 ℃, insulation 70min, air cooling is to room temperature; In quench treatment, temperature is risen to 806 ℃, insulation 71min, water-cooled is to room temperature; In high tempering is processed, temperature is risen to 530 ℃, insulation 130min, water-cooled is to room temperature, thereby obtains thermal treatment ball base;
S3, the pre-treatment of thermal treatment ball base: by after the thermal treatment ball base sandblast obtaining in S2, with after washing with acetone with the abrasive paper for metallograph 15min that polishes, with acetone, clean 3 times, with dehydrated alcohol, clean 2 times, be positioned in vacuum drying oven, regulating the temperature of loft drier is 55 ℃, after insulation 4h, obtains pre-treatment ball base;
Pre-treatment before S4, cladding: add 2wt% nano Ce O in powdered alloy
2after put into ball mill ball milling 3h, put into afterwards vacuum drying oven, regulating the temperature of loft drier is 72 ℃, insulation 4.3h obtains composite granule; With plasma, composite granule is sprayed on to the surface of pre-treatment ball base, thickness is that 0.16mm obtains the front pre-treatment ball base of cladding; Described powdered alloy comprises by weight: the Mn of 10 parts, the Cr of 8.3 parts, the Si of 1 part, the Al of 1.0 parts
2o
3, Al, the Co of 1 part, 75 parts of Fe of 3 parts;
S5, cladding: pre-treatment ball base before the cladding obtaining in S4 is put into laser cladding equipment and carry out laser melting coating, obtain cladding wear-resistant ball after cooling; Wherein the processing parameter of laser melting coating is as follows: single-channel scanning, use argon shield laser cell, and laser power is set to 1.7KW, and tabula rasa diameter is 0.2mm, and cladding speed is 3mm/s;
S6, nitriding: the cladding wear-resistant ball obtaining in S5 is put into Double-heating multi-functional ion-bombardment and carry out nitridation process and obtain described wear-resistant ball, the parameter of described nitridation process is specific as follows: glow voltage: 0.58KV, dutycycle: 45%, ammonia flow: 0.08m
3/ h, furnace pressure: 220Pa, temperature: 450 ℃, the time: 3h.
Embodiment 2
High abrasion antioxidant wear-resistant ball for ball mill of the present invention, its moiety comprises by massfraction: C:2.0%, Mn:0.46%, Si:0.81%, Ni:0.21%, Cr:5.95%, Mo:1.5%, V:0.7%, Nb:0.2%, Ca:0.023%, Zr:0.015%, Cu:0.02%, S:0.02%, P:0.033%, surplus is Fe and inevitable impurity;
According to above-mentioned moiety proportioning, ball mill is prepared according to following technique with high abrasion antioxidant wear-resistant ball:
S1, melting: steel scrap is joined in medium frequency induction melting furnace, and be heated to 1500 ℃, after insulation 45min, add ferrochrome, molybdenum-iron, vanadium iron, ferro-niobium, add until completely melted ferrosilicon and ferromanganese, be warming up to 1560 ℃ and add nickelalloy, silicocalcium, ferrozirconium after being heated to melt completely, each raw material obtains molten steel after melting skim completely, cast, die sinking after molten steel solidifies completely, stove is chilled to room temperature and obtains wear-resistant ball base;
S2, thermal treatment: the wear-resistant ball base obtaining in S1 is processed through normalizing, quenching and high tempering successively; In normalizing treatment, temperature is risen to 980 ℃, insulation 80min, air cooling is to room temperature; In quench treatment, temperature is risen to 800 ℃, insulation 75min, water-cooled is to room temperature; In high tempering is processed, temperature is risen to 523 ℃, insulation 134min, water-cooled is to room temperature, thereby obtains thermal treatment ball base; Wherein, in normalizing treatment, temperature is risen in the process of 980 ℃, temperature rise rate reduces with the rising of temperature and average temperature rise rate is 5 ℃/min; In quench treatment, temperature is risen to 800 ℃, insulation 75min, water-cooled is to the process of room temperature, and speed of cooling reduces with the reduction of temperature;
S3, the pre-treatment of thermal treatment ball base: by after the thermal treatment ball base sandblast obtaining in S2, with after washing with acetone with the abrasive paper for metallograph 20min that polishes, with acetone, clean 3 times, with dehydrated alcohol, clean 2 times, be positioned in vacuum drying oven, regulating the temperature of loft drier is 63 ℃, after insulation 3.6h, obtains pre-treatment ball base;
Pre-treatment before S4, cladding: add 1wt% nano Ce O in powdered alloy
2after put into ball mill ball milling 5h, put into afterwards vacuum drying oven, regulating the temperature of loft drier is 50 ℃, insulation 5h obtains composite granule; With plasma, composite granule is sprayed on to the surface of pre-treatment ball base, thickness is that 0.1mm obtains the front pre-treatment ball base of cladding; Described powdered alloy comprises by weight: the Mn of 12 parts, the Cr of 5 parts, the Si of 2.6 parts, the Al of 1.3 parts
2o
3, Al, the Co of 1.6 parts, 82 parts of Fe of 2.3 parts;
S5, cladding: pre-treatment ball base before the cladding obtaining in S4 is put into laser cladding equipment and carry out laser melting coating, obtain cladding wear-resistant ball after cooling; Wherein the processing parameter of laser melting coating is as follows: single-channel scanning, use argon shield laser cell, and laser power is set to 2.0KW, and tabula rasa diameter is 0.7mm, and cladding speed is 2mm/s;
S6, nitriding: the cladding wear-resistant ball obtaining in S5 is put into Double-heating multi-functional ion-bombardment and carry out nitridation process and obtain described wear-resistant ball, the parameter of described nitridation process is specific as follows: glow voltage: 0.38KV, dutycycle: 35%, ammonia flow: 0.065m
3/ h, furnace pressure: 250Pa, temperature: 400 ℃, the time: 5h.
Embodiment 3
High abrasion antioxidant wear-resistant ball for ball mill of the present invention, its moiety comprises by massfraction: C:1.7%, Mn:0.12%, Si:0.69%, Ni:0.45%, Cr:5.21%, Mo:1.1%, V:0.9%, Nb:0.5%, Ca:0.01%, Zr:0.01%, Cu:0.01%, S:0.028%, P:0.03%, surplus is Fe and inevitable impurity;
According to above-mentioned moiety proportioning, ball mill is prepared according to following technique with high abrasion antioxidant wear-resistant ball:
S1, melting: steel scrap is joined in medium frequency induction melting furnace, and be heated to 1506 ℃, after insulation 40min, add ferrochrome, molybdenum-iron, vanadium iron, ferro-niobium, add until completely melted ferrosilicon and ferromanganese, be warming up to 1530 ℃ and add nickelalloy, silicocalcium, ferrozirconium after being heated to melt completely, each raw material obtains molten steel after melting skim completely, cast, die sinking after molten steel solidifies completely, stove is chilled to room temperature and obtains wear-resistant ball base;
S2, thermal treatment: the wear-resistant ball base obtaining in S1 is processed through normalizing, quenching and high tempering successively; In normalizing treatment, temperature is risen to 1030 ℃, insulation 50min, air cooling is to room temperature; In quench treatment, temperature is risen to 820 ℃, insulation 30min, water-cooled is to room temperature; In high tempering process, temperature is risen to 500 ℃, insulation 150min, water-cooled is to room temperature, thereby obtains thermal treatment ball base; Wherein, in normalizing treatment, temperature is risen in the process of 1030 ℃, temperature rise rate reduces with the rising of temperature and average temperature rise rate is 8 ℃/min; In quench treatment, temperature is risen to 820 ℃, insulation 30min, water-cooled is to the process of room temperature, and speed of cooling reduces with the reduction of temperature;
S3, the pre-treatment of thermal treatment ball base: by after the thermal treatment ball base sandblast obtaining in S2, with after washing with acetone with the abrasive paper for metallograph 18min that polishes, with acetone, clean 3 times, with dehydrated alcohol, clean 2 times, be positioned in vacuum drying oven, regulating the temperature of loft drier is 75 ℃, after insulation 3h, obtains pre-treatment ball base;
Pre-treatment before S4, cladding: add 3wt% nano Ce O in powdered alloy
2after put into ball mill ball milling 4h, put into afterwards vacuum drying oven, regulating the temperature of loft drier is 85 ℃, insulation 3h obtains composite granule; With plasma, composite granule is sprayed on to the surface of pre-treatment ball base, thickness is that 0.2mm obtains the front pre-treatment ball base of cladding; Described powdered alloy comprises by weight: the Mn of 15 parts, the Cr of 10 parts, the Si of 3 parts, the Al of 0.5 part
2o
3, Al, the Co of 2 parts, 79 parts of Fe of 2 parts;
S5, cladding: pre-treatment ball base before the cladding obtaining in S4 is put into laser cladding equipment and carry out laser melting coating, obtain cladding wear-resistant ball after cooling; Wherein the processing parameter of laser melting coating is as follows: single-channel scanning, use argon shield laser cell, and laser power is set to 1.5KW, and tabula rasa diameter is 0.4mm, and cladding speed is 4mm/s;
S6, nitriding: the cladding wear-resistant ball obtaining in S5 is put into Double-heating multi-functional ion-bombardment and carry out nitridation process and obtain described wear-resistant ball, the parameter of described nitridation process is specific as follows: glow voltage: 0.2KV, dutycycle: 40%, ammonia flow: 0.08m
3/ h, furnace pressure: 230Pa, temperature: 435 ℃, the time: 4.3h.
Embodiment 4
High abrasion antioxidant wear-resistant ball for ball mill of the present invention, its moiety comprises by massfraction: C:1.5%, Mn:0.35%, Si:0.73%, Ni:0.42%, Cr:5.56%, Mo:1.36%, V:0.79%, Nb:0.36%, Ca:0.026%, Zr:0.014%, Cu:0.02%, S:0.02%, P:0.031%, surplus is Fe and inevitable impurity;
According to above-mentioned moiety proportioning, ball mill is prepared according to following technique with high abrasion antioxidant wear-resistant ball:
S1, melting: steel scrap is joined in medium frequency induction melting furnace, and be heated to 1515 ℃, after insulation 34min, add ferrochrome, molybdenum-iron, vanadium iron, ferro-niobium, add until completely melted ferrosilicon and ferromanganese, be warming up to 1556 ℃ and add nickelalloy, silicocalcium, ferrozirconium after being heated to melt completely, each raw material obtains molten steel after melting skim completely, cast, die sinking after molten steel solidifies completely, stove is chilled to room temperature and obtains wear-resistant ball base;
S2, thermal treatment: the wear-resistant ball base obtaining in S1 is processed through normalizing, quenching and high tempering successively; In normalizing treatment, temperature is risen to 1015 ℃, insulation 66min, air cooling is to room temperature; In quench treatment, temperature is risen to 815 ℃, insulation 63min, water-cooled is to room temperature; In high tempering process, temperature is risen to 521 ℃, insulation 138min, water-cooled is to room temperature, thereby obtains thermal treatment ball base; Wherein, in normalizing treatment process, temperature is risen in the process of 1015 ℃, temperature rise rate reduces with the rising of temperature and average temperature rise rate is 7 ℃/min; In quenching process, temperature is risen to 815 ℃, insulation 63min, water-cooled is to the process of room temperature, and speed of cooling reduces with the reduction of temperature;
S3, the pre-treatment of thermal treatment ball base: by after the thermal treatment ball base sandblast obtaining in S2, with after washing with acetone with the abrasive paper for metallograph 17min that polishes, with acetone, clean 3 times, with dehydrated alcohol, clean 2 times, be positioned in vacuum drying oven, regulating the temperature of loft drier is 59 ℃, after insulation 3.8h, obtains pre-treatment ball base;
Pre-treatment before S4, cladding: add 2wt% nano Ce O in powdered alloy
2after put into ball mill ball milling 4h, put into afterwards vacuum drying oven, regulating the temperature of loft drier is 80 ℃, insulation 4h obtains composite granule; With plasma, composite granule is sprayed on to the surface of pre-treatment ball base, thickness is that 0.15mm obtains the front pre-treatment ball base of cladding; Described powdered alloy comprises by weight: the Mn of 14 parts, the Cr of 8 parts, the Si of 2.5 parts, the Al of 1.0 parts
2o
3, Al, the Co of 1.3 parts, the Fe of 78 parts of 2.2 parts;
S5, cladding: pre-treatment ball base before the cladding obtaining in S4 is put into laser cladding equipment and carry out laser melting coating, obtain cladding wear-resistant ball after cooling; Wherein the processing parameter of laser melting coating is as follows: single-channel scanning, use argon shield laser cell, and laser power is set to 1.7KW, and tabula rasa diameter is 0.5mm, and cladding speed is 4mm/s;
S6, nitriding: the cladding wear-resistant ball obtaining in S5 is put into Double-heating multi-functional ion-bombardment and carry out nitridation process and obtain described wear-resistant ball, the parameter of described nitridation process is specific as follows: glow voltage: 0.5KV, dutycycle: 40%, ammonia flow: 0.06m
3/ h, furnace pressure: 235Pa, temperature: 440 ℃, the time: 4h.
Claims (8)
1. a high abrasion antioxidant wear-resistant ball for ball mill, is characterized in that, its moiety comprises by massfraction: C:1.3-2.0%, Mn:0.12-0.46%, Si:0.53-0.81%, Ni:0.21-0.45%, Cr:4.2-5.95%, Mo:1.1-1.5%, 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%, S≤0.028%, P≤0.033%, surplus is Fe and inevitable impurity;
According to above-mentioned moiety proportioning, ball mill is prepared according to following technique with high abrasion antioxidant wear-resistant ball:
S1, melting: steel scrap is joined in medium frequency induction melting furnace, and be heated to 1500-1520 ℃, after insulation 20-45min, add ferrochrome, molybdenum-iron, vanadium iron, ferro-niobium, add until completely melted ferrosilicon and ferromanganese, be warming up to 1530-1570 ℃ and add nickelalloy, silicocalcium, ferrozirconium after being heated to melt completely, each raw material obtains molten steel after melting skim completely, cast, die sinking after molten steel solidifies completely, stove is chilled to room temperature and obtains wear-resistant ball base;
S2, thermal treatment: the wear-resistant ball base obtaining in S1 is processed through normalizing, quenching and high tempering successively; In normalizing treatment, temperature is risen to 980-1030 ℃, insulation 50-80min, air cooling is to room temperature; In quench treatment, temperature is risen to 800-820 ℃, insulation 30-75min, water-cooled is to room temperature; In high tempering is processed, temperature is risen to 500-530 ℃, insulation 130-150min, water-cooled is to room temperature, thereby obtains thermal treatment ball base;
S3, the pre-treatment of thermal treatment ball base: by after the thermal treatment ball base sandblast obtaining in S2, with polishing with abrasive paper for metallograph after washing with acetone, after cleaning with acetone, with dehydrated alcohol, clean again, be positioned in vacuum drying oven, regulating the temperature of loft drier is 55-75 ℃, after insulation 3-4h, obtains pre-treatment ball base;
Pre-treatment before S4, cladding: add 1-3wt% nano Ce O in powdered alloy
2after put into ball mill ball milling 3-5h, put into afterwards vacuum drying oven, regulating the temperature of loft drier is 50-85 ℃, insulation 3-5h obtains composite granule; With plasma, composite granule is sprayed on to the surface of pre-treatment ball base, thickness is that 0.1-0.2mm obtains the front pre-treatment ball base of cladding; Described powdered alloy comprises by weight: the Mn of 10-15 part, the Si of the Cr of 5-10 part, 1-3 part, the Al of 0.5-1.3 part
2o
3, the Al of 2-3 part is, the Co of 1-2 part, 75-82 part Fe;
S5, cladding: pre-treatment ball base before the cladding obtaining in S4 is put into laser cladding equipment and carry out laser melting coating, obtain cladding wear-resistant ball after cooling; Wherein the processing parameter of laser melting coating is as follows: single-channel scanning, use argon shield laser cell, and laser power is set to 1.5-2.0KW, and tabula rasa diameter is 0.2-0.7mm, and cladding speed is 2-4mm/s;
S6, nitriding: the cladding wear-resistant ball obtaining in S5 is put into Double-heating multi-functional ion-bombardment and carry out nitridation process and obtain described wear-resistant ball, the parameter of described nitridation process is specific as follows: glow voltage: 0.2-0.58KV, dutycycle: 35-45%, ammonia flow: 0.05-0.08m
3/ h, furnace pressure: 220-250Pa, temperature: 400-450 ℃, time: 3-5h.
2. high abrasion antioxidant wear-resistant ball for ball mill according to claim 1, is characterized in that, its moiety comprises by massfraction: C:1.5%, Mn:0.35%, Si:0.73%, Ni:0.42%, Cr:5.56%, Mo:1.36%, V:0.79%, Nb:0.36%, Ca:0.026%, Zr:0.014%, Cu:0.02%, S:0.02%, P:0.031%, surplus is Fe and inevitable impurity.
3. high abrasion antioxidant wear-resistant ball for ball mill according to claim 1 and 2, is characterized in that, in S2, in normalizing treatment, temperature is risen in the process of 980-1030 ℃, and temperature rise rate reduces with the rising of temperature.
4. according to high abrasion antioxidant wear-resistant ball for the ball mill described in any one in claim 1-3, it is characterized in that, in S2, in quench treatment, temperature is risen to 800-820 ℃, insulation 30-75min, water-cooled is to the process of room temperature, and speed of cooling reduces with the reduction of temperature.
5. according to high abrasion antioxidant wear-resistant ball for the ball mill described in any one in claim 1-4, it is characterized in that, in S2, in normalizing treatment, temperature is risen to 1015 ℃, insulation 66min, air cooling is to room temperature; In quench treatment, temperature is risen to 815 ℃, insulation 63min, water-cooled is to room temperature; In high tempering process, temperature is risen to 521 ℃, insulation 138min, water-cooled is to room temperature.
6. according to high abrasion antioxidant wear-resistant ball for the ball mill described in any one in claim 1-5, it is characterized in that, in S4, in powdered alloy, add 2wt% nano Ce O
2after put into ball mill ball milling 4h, put into afterwards vacuum drying oven, regulating the temperature of loft drier is 80 ℃, insulation 4h obtains composite granule; With plasma, composite granule is sprayed on to the surface of pre-treatment ball base, thickness is that 0.15mm obtains the front pre-treatment ball base of cladding; Described powdered alloy comprises by weight: the Mn of 14 parts, the Cr of 8 parts, the Si of 2.5 parts, the Al of 1.0 parts
2o
3, Al, the Co of 1.3 parts, the Fe of 78 parts of 2.2 parts.
7. according to high abrasion antioxidant wear-resistant ball for the ball mill described in any one in claim 1-6, it is characterized in that, in S5; the processing parameter of laser melting coating is as follows: single-channel scanning, use argon shield laser cell, and laser power is set to 1.7KW; tabula rasa diameter is 0.5mm, and cladding speed is 4mm/s.
8. according to high abrasion antioxidant wear-resistant ball for the ball mill described in any one in claim 1-7, it is characterized in that, in S6, the parameter of described nitridation process is specific as follows: glow voltage: 0.5KV, and dutycycle: 40%, ammonia flow: 0.06m
3/ h, furnace pressure: 235Pa, temperature: 440 ℃, the time: 4h.
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| CN104611641A (en) * | 2014-12-13 | 2015-05-13 | 广西科技大学 | Heat resistant and wear resistant steel plate |
| CN105200327A (en) * | 2015-09-29 | 2015-12-30 | 湖南电力耐磨金属制品有限公司 | Corrosion-resistant casting steel ball and heat treatment method thereof |
| CN105506619A (en) * | 2015-12-31 | 2016-04-20 | 四川腾达电梯制造有限公司 | Surface treatment process for elevator guide rail |
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| CN107779809A (en) * | 2017-10-23 | 2018-03-09 | 宁国市正兴耐磨材料有限公司 | A kind of preparation method of composite coating wear-resistant ball |
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| CN107723655A (en) * | 2017-10-23 | 2018-02-23 | 宁国市正兴耐磨材料有限公司 | A kind of Technology for Heating Processing of low chromium wear-resistant ball |
| CN107779809A (en) * | 2017-10-23 | 2018-03-09 | 宁国市正兴耐磨材料有限公司 | A kind of preparation method of composite coating wear-resistant ball |
| CN107523669A (en) * | 2017-10-23 | 2017-12-29 | 宁国市正兴耐磨材料有限公司 | A kind of handling process of high hardness high toughness high-chromium wear-resistant ball |
| CN107523669B (en) * | 2017-10-23 | 2018-12-07 | 宁国市正兴耐磨材料有限公司 | A kind for the treatment of process of high hardness high toughness high-chromium wear-resistant ball |
| CN107723655B (en) * | 2017-10-23 | 2019-06-18 | 宁国市正兴耐磨材料有限公司 | A kind of heat treatment process of low chromium wear-resistant ball |
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| CN111172449A (en) * | 2019-01-31 | 2020-05-19 | 桂林理工大学 | Wear-resistant cast steel lining plate and manufacturing method thereof |
| CN112548103A (en) * | 2020-12-23 | 2021-03-26 | 长沙理工大学 | Titanium alloy laser additive repair and surface nitriding composite treatment process |
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