CN106086728A - A kind of powder metallurgy transmission gear - Google Patents
A kind of powder metallurgy transmission gear Download PDFInfo
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- CN106086728A CN106086728A CN201610601639.4A CN201610601639A CN106086728A CN 106086728 A CN106086728 A CN 106086728A CN 201610601639 A CN201610601639 A CN 201610601639A CN 106086728 A CN106086728 A CN 106086728A
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- Prior art keywords
- powder
- transmission gear
- agent
- parts
- powder metallurgy
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/08—Iron group metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
-
- 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
- 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
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/34—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in more than one step
Abstract
The invention discloses a kind of powder metallurgy transmission gear, it is made up of following raw material: water-atomized iron powder, copper powder, molybdenum powder, vanadium powder, nikel powder, yttrium powder, aluminum powder, magnesium powder, cobalt powder, Hydrocerussitum (Ceruse), steel-making slag powder, cupola furnace ground-slag, ferroalloy ground-slag, modified tree ash powder, graphite powder, unsaturated polyester resin, silicone oil, carboxymethyl cellulose, aluminium stearate, Polyethylene Glycol, ethylene bis stearic acid amide, fatty acid, carbon fibre, glass fibre, boron nitride, glycidoxy-propyltrimethoxy silane, silicon dioxide, Manganese monosulfide., acrylate, inhibitor, binding agent, hardening agent, cutting agent, lubricant, coupling agent, dispersant.The powder metallurgy transmission gear of the present invention, by specific composition proportion so that powder metallurgy transmission gear global density is uniform, consistency is high, and elongation percentage and the contraction percentage of area are big, and wearability, intensity and hardness are good, stock utilization is high, is suitable to high-volume and quickly produces High-performance gear.
Description
[technical field]
The invention belongs to powder metallurgical technology, be specifically related to a kind of powder metallurgy transmission gear.
[background technology]
Gear be dependent on that the engagement of tooth is reliable and noiseless transmit the colyliform machine components of torque, gear by with other dentation
Machine components transmission, can realize changing rotating speed and moment of torsion, changing the direction of motion and change the functions such as forms of motion.Gear passes at present
Move and become the most widely used kind of drive.
PM technique, it is possible to the shape production requirement high dimensional accuracy the most close with article shape, complicated
The parts of shape, it is possible to reduce cutting cost significantly.Especially in gear manufacture field, it is one that powder metallurgic method manufactures gear
Plant efficient, precision, flexibly metal working process, be suitable to high-volume low-cost production high intensity, the gear of high tolerance.Greatly
Decrease greatly tradition steel and machine quality, the deficiency of poor performance caused.
But, existing powdered metal parts, owing to formula is the most perfect, batch mixing is uneven, cause stock utilization low,
The green compact being pressed into uneven, the global density by the part of heat treatment gained is uneven, and consistency is low, elongation percentage and disconnected
Face shrinkage factor is little, and wearability, intensity and hardness are poor.
[summary of the invention]
The present invention provides a kind of powder metallurgy transmission gear, uneven to solve existing powder metallurgy transmission gear global density,
Consistency is low, and elongation percentage and the contraction percentage of area are little, and wearability, intensity and hardness are poor, and stock utilization is low, and preparation cost is high
Problem.The powder metallurgy transmission gear of the present invention, by specific composition proportion so that powder metallurgy transmission gear global density
Uniformly, consistency is high, and elongation percentage and the contraction percentage of area are big, and wearability, intensity and hardness are good, and stock utilization is high, is suitable to large quantities of
Amount quickly produces High-performance gear.
For solve above technical problem, the present invention by the following technical solutions:
A kind of powder metallurgy transmission gear, in units of weight, is made up of following raw material: water-atomized iron powder 282-846 part, copper powder
2-6 part, molybdenum powder 2-5 part, vanadium powder 3-5 part, nikel powder 1-3 part, yttrium powder 2-3 part, aluminium powder 2-3 part, magnesium powder 1-2 part, cobalt powder 1-1.5
Part, Hydrocerussitum (Ceruse) 1-1.8 part, steel-making slag powder 1.5-2.5 part, cupola furnace ground-slag 1-2 part, ferroalloy ground-slag 1-2 part, modified tree ash powder
0.8-1.2 part, graphite powder 0.6-1.2 part, unsaturated polyester resin 0.6-1 part, silicone oil 0.4-0.9 part, carboxymethyl cellulose
0.6-0.8 part, aluminium stearate 0.3-1 part, Polyethylene Glycol 0.4-0.8 part, ethylene bis stearic acid amide 0.2-0.4 part, fatty acid
0.5-0.8 part, carbon fibre 0.4-0.7 part, glass fibre 0.3-0.5 part, boron nitride 0.2-0.3 part, epoxypropoxy three
Methoxy silane 0.1-0.2 part, silicon dioxide 0.05-0.1 part, Manganese monosulfide. 0.03-0.05 part, acrylate 0.01-0.03 part,
Inhibitor 0.02-0.04 part, binding agent 0.06-0.08 part, hardening agent 0.04-0.08 part, cutting agent 0.08-0.12 part, lubrication
Agent 0.12-0.15 part, coupling agent 0.1-0.14 part, dispersant 0.1-0.12 part；
In described powder stock, the particle diameter of various metal dusts is 200-400 mesh；
Described glycidoxy-propyltrimethoxy silane is viscosifier；
Described silicon dioxide is antiwear additive；
Described Manganese monosulfide. is processing aid；
Described acrylate is regulator；
Described inhibitor, in units of weight portion, is made up of following raw material: tungsten carbide 12-16 part, niobium carbide 10-14 part, carbonization
Tantalum 10-12 part, tungsten nitride 8-10 part, titanium carbide 10-15 part, molybdenum sulfide 6-8 part, cerium fluoride 5-9 part, carbon 8-15 part；
Described binding agent, in units of weight portion, is made up of following raw material: nickel aluminide 9-15 part, Titanium Trialuminum 8-14 part, nitridation
Aluminum 6-12 part, zinc 5-10 part；
The preparation method of described powder metallurgy transmission gear, comprises the following steps:
S1: the iron powder that makes water fogging, copper powder, molybdenum powder, vanadium powder, nikel powder, yttrium powder, aluminium powder, magnesium powder, cobalt powder, Hydrocerussitum (Ceruse), graphite powder, poly-second
Glycol, fatty acid, carbon fibre, glass fibre join in blender, stir 10-under rotating speed is 100-200r/min
14min, prepares mixture A；
S2: unsaturated polyester resin, carboxymethyl cellulose, aluminium stearate, ethylene bis stearic acid amide, boron nitride are added stirring
Machine stirs under rotating speed is 200-300r/min 12-16min, prepares mixture B；
S3: by step S1 prepare mixture A, step S2 prepare mixture B, steel-making slag powder, cupola furnace ground-slag, ferroalloy slag
Powder, modified tree ash powder, silicone oil, glycidoxy-propyltrimethoxy silane, silicon dioxide, Manganese monosulfide., esters of acrylic acid are adjusted
Joint agent, inhibitor, binding agent, hardening agent, cutting agent, lubricant, coupling agent, dispersant join in blender, in temperature are
200-280 DEG C, rotating speed is stirring 2-4h under 300-400r/min, prepares mixture C；
S4: the mixture C that step S3 prepares is put into press, is sent in the product mold preset by press by described mixture C,
And it is pressed into green part under pressure is 560-620MPa；
S5: the green part that step S4 prepares be placed in sintering furnace, in the protective atmosphere of hydrogen and nitrogen mixed gas, first exists
At 680-700 DEG C, presintering 45-50min, wherein the volume ratio of hydrogen and nitrogen is 1.8-2.2:97.8-98.2, then by with
Lower liter of mild temperature is sintered:
1) with heating rate 18-22 DEG C/min, it is warming up to 900-940 DEG C from 680-700 DEG C, and is incubated 8-12 min；
2) with heating rate 23-27 DEG C/min, it is warming up to 1050-1080 DEG C from 900-940 DEG C, and is incubated 14-16min；
3) with heating rate 12-16 DEG C/min, it is warming up to 1180-1200 DEG C from 1050-1080 DEG C, and sinters at this temperature
145-150min, prepares workpiece；
S6: being quenched by the workpiece that step S5 prepares, hardening heat is 810-830 DEG C, and the cool time is 40-50min, then
Being warming up to 920-930 DEG C with heating rate 8-12 DEG C/min, be incubated 70-80min, then be tempered, temperature is 220-
230 DEG C, tempering insulation time is 80-85min, prepares the powder metallurgy transmission gear after lonneal；
S7: the powder metallurgy transmission gear after the lonneal prepare step S6 is in carburizer, at the carburizing medium of gaseous state
In be heated to 820-860 DEG C, be incubated 5.5-6h, be then cooled to 125-128 DEG C, be incubated 6-7h, followed by being cooled to room temperature, system
Obtain the powder metallurgy transmission gear after carburizing；
S8: the powder metallurgy transmission gear after the carburizing prepare step S7 is sent in steam oven, carries out steam process, steam temperature
Degree, for 720-740 DEG C, is incubated 2.5-2.8h, is then incubated 3.5-4h at 170-185 DEG C, finally naturally cools to room temperature, system
Obtain powder metallurgy transmission gear product.
Further, described modified tree ash powder is prepared by the following method and forms: tree ash is first used 28%-32%
Soak with sulphuric acid 20-25min, then neutralize with sodium hydroxide solution, then wash with deionized water miscellaneous, then with NDZ-311 titanium
Acid esters coupling agent mixes, the 1.2%-1.8% that consumption is tree ash weight of described NDZ-311 titanate coupling agent, with spraying
Form adds in high speed mixer, discharging after stirring 16-18min, dries, pulverized 500-600 mesh sieve, prepares modified trees
Ashes powder.
Further, described hardening agent is 701 powder hardening agents.
Further, described cutting agent, in units of weight, is made up of following raw material: cutting oil 12-14 part, tricresyl phosphate third
Ester 8-10 part, dinonylnaphthalene sulfonic acid calcium 4-6 part, 2,6 ditertiary butyl p cresol 5-9 part, dodecenylsuccinic acid 5-7 part, three second
Hydramine borate 8-10 part, polyacrylamide 6-10 part, dodecylbenzene sodium sulfonate 7-9 part, benzoic acid 5-8 part, oleamide
3-7 part, tetrasodium ethylenediamine tetraacetate 2-6 part, amino carboxylic acid quasi-chelate compound 1-2 part, Polyethylene Glycol 7-13 part.
Further, described lubricant, in units of weight, it is made up of following raw material: polyvinyl isobutyl ether 18-38
Part, chlorinated paraffin 6-12 part, magnesium oxide particle 4-8 part, aluminium stearate 6-19 part, carboxylic acid amide 8-12 part, acetate butyl 12-14
Part, boric acid 6-10 part, N-Methyl pyrrolidone 7-10 part, dimethylformamide 6-9 part.
Further, described coupling agent is epoxy silane class coupling agent.
Further, described dispersant is hexenyl bis-stearamides.
The method have the advantages that
(1) powder metallurgy transmission gear that the present invention prepares has good combination property, and wherein percentage elongation has reached 17.95%
Above, the contraction percentage of area has reached more than 51.27%, and tensile strength has reached more than 828.94MPa, and yield strength reaches
More than 543.01MPa, hardness has reached more than 109.54HRC, and stock utilization has reached more than 92.11%, and consistency reaches
More than 91.63%；
(2) powder metallurgy transmission gear of the present invention, using steel-making slag powder, cupola furnace ground-slag, ferroalloy ground-slag, tree ash powder as
The specific components of powder metallurgy transmission gear uses, recycling garbage, effectively reduces cost；
(3) powder metallurgy transmission gear of the present invention, by specific composition proportion so that powder metallurgy transmission gear entirety is close
Uniformly, consistency is high for degree, and elongation percentage and the contraction percentage of area are big, and wearability, intensity and hardness are good, and stock utilization is high, is suitable to big
Batch quickly produces High-performance gear.
[detailed description of the invention]
For ease of being more fully understood that the present invention, being illustrated by following example, these embodiments belong to the protection of the present invention
Scope, but it is not intended to protection scope of the present invention.
In an embodiment, described powder metallurgy transmission gear, in units of weight, it is made up of following raw material: water atomization ferrum
Powder 282-846 part, copper powder 2-6 part, molybdenum powder 2-5 part, vanadium powder 3-5 part, nikel powder 1-3 part, yttrium powder 2-3 part, aluminium powder 2-3 part, magnesium powder
1-2 part, cobalt powder 1-1.5 part, Hydrocerussitum (Ceruse) 1-1.8 part, steel-making slag powder 1.5-2.5 part, cupola furnace ground-slag 1-2 part, ferroalloy ground-slag 1-2
Part, modified tree ash powder 0.8-1.2 part, graphite powder 0.6-1.2 part, unsaturated polyester resin 0.6-1 part, silicone oil 0.4-0.9
Part, carboxymethyl cellulose 0.6-0.8 part, aluminium stearate 0.3-1 part, Polyethylene Glycol 0.4-0.8 part, ethylene bis stearic acid amide
0.2-0.4 part, fatty acid 0.5-0.8 part, carbon fibre 0.4-0.7 part, glass fibre 0.3-0.5 part, boron nitride 0.2-0.3
Part, glycidoxy-propyltrimethoxy silane 0.1-0.2 part, silicon dioxide 0.05-0.1 part, Manganese monosulfide. 0.03-0.05 part, third
Olefin(e) acid ester 0.01-0.03 part, inhibitor 0.02-0.04 part, binding agent 0.06-0.08 part, hardening agent 0.04-0.08 part, cutting
Agent 0.08-0.12 part, lubricant 0.12-0.15 part, coupling agent 0.1-0.14 part, dispersant 0.1-0.12 part；
In described powder stock, the particle diameter of various metal dusts is 200-400 mesh；
Described modified tree ash powder is prepared by the following method and forms: by tree ash first with the soak with sulphuric acid 20-of 28%-32%
25min, then neutralizes with sodium hydroxide solution, then washes with deionized water miscellaneous, then mix with NDZ-311 titanate coupling agent
Close, the 1.2%-1.8% that consumption is tree ash weight of described NDZ-311 titanate coupling agent, add at a high speed with Sprayable
In batch mixer, discharging after stirring 16-18min, dry, pulverized 500-600 mesh sieve, prepare modified tree ash powder；
Described glycidoxy-propyltrimethoxy silane is viscosifier；
Described silicon dioxide is antiwear additive；
Described Manganese monosulfide. is processing aid；
Described acrylate is regulator；
Described inhibitor, in units of weight portion, is made up of following raw material: tungsten carbide 12-16 part, niobium carbide 10-14 part, carbonization
Tantalum 10-12 part, tungsten nitride 8-10 part, titanium carbide 10-15 part, molybdenum sulfide 6-8 part, cerium fluoride 5-9 part, carbon 8-15 part；
Described binding agent, in units of weight portion, is made up of following raw material: nickel aluminide 9-15 part, Titanium Trialuminum 8-14 part, nitridation
Aluminum 6-12 part, zinc 5-10 part；
Described hardening agent is 701 powder hardening agents；
Described cutting agent, in units of weight, is made up of following raw material: cutting oil 12-14 part, tricresyl phosphate propyl ester 8-10 part, two nonyls
Base LOMAR PWA EINECS 246-676-2 calcium 4-6 part, 2,6 ditertiary butyl p cresol 5-9 part, dodecenylsuccinic acid 5-7 part, triethanolamine borate 8-
10 parts, polyacrylamide 6-10 part, dodecylbenzene sodium sulfonate 7-9 part, benzoic acid 5-8 part, oleamide 3-7 part, ethylenediamine
Tetraacethyl four sodium 2-6 part, amino carboxylic acid quasi-chelate compound 1-2 part, Polyethylene Glycol 7-13 part；The preparation method of described cutting agent, bag
Include following steps:
Step 1, will cutting oil, tricresyl phosphate propyl ester, dinonylnaphthalene sulfonic acid calcium, 2,6 ditertiary butyl p cresol, laurylene base fourth two
Acid, triethanolamine borate, polyacrylamide, dodecylbenzene sodium sulfonate, benzoic acid mix homogeneously, then heat mixture
To 52-58 DEG C；
Step 2, adds remaining ingredient in step 1 gained mixture, continues to be heated to 76-92 DEG C, and be incubated 2.5-3.5h, system
Obtain cutting agent；
Described lubricant, in units of weight, is made up of following raw material: polyvinyl isobutyl ether 18-38 part, chlorinated paraffin 6-12
Part, magnesium oxide particle 4-8 part, aluminium stearate 6-19 part, carboxylic acid amide 8-12 part, acetate butyl 12-14 part, boric acid 6-10 part,
N-Methyl pyrrolidone 7-10 part, dimethylformamide 6-9 part；Described lubricant is prepared by following preparation method:
The raw material components of lubricant is joined in reactor and react 11-19h in 420-480 DEG C, then use grain after solidification
Son has the cone mill of clipping power as mechanical dispersion equipment, is ground dispersion, prepares lubricant；
Described coupling agent is epoxy silane class coupling agent；
Described dispersant is hexenyl bis-stearamides；
The preparation method of described powder metallurgy transmission gear, comprises the following steps:
S1: the iron powder that makes water fogging, copper powder, molybdenum powder, vanadium powder, nikel powder, yttrium powder, aluminium powder, magnesium powder, cobalt powder, Hydrocerussitum (Ceruse), graphite powder, poly-second
Glycol, fatty acid, carbon fibre, glass fibre join in blender, stir 10-under rotating speed is 100-200r/min
14min, prepares mixture A；
S2: unsaturated polyester resin, carboxymethyl cellulose, aluminium stearate, ethylene bis stearic acid amide, boron nitride are added stirring
Machine stirs under rotating speed is 200-300r/min 12-16min, prepares mixture B；
S3: by step S1 prepare mixture A, step S2 prepare mixture B, steel-making slag powder, cupola furnace ground-slag, ferroalloy slag
Powder, modified tree ash powder, silicone oil, glycidoxy-propyltrimethoxy silane, silicon dioxide, Manganese monosulfide., esters of acrylic acid are adjusted
Joint agent, inhibitor, binding agent, hardening agent, cutting agent, lubricant, coupling agent, dispersant join in blender, in temperature are
200-280 DEG C, rotating speed is stirring 2-4h under 300-400r/min, prepares mixture C；
S4: the mixture C that step S3 prepares is put into press, is sent in the product mold preset by press by described mixture C,
And it is pressed into green part under pressure is 560-620MPa；
S5: the green part that step S4 prepares be placed in sintering furnace, in the protective atmosphere of hydrogen and nitrogen mixed gas, first exists
At 680-700 DEG C, presintering 45-50min, wherein the volume ratio of hydrogen and nitrogen is 1.8-2.2:97.8-98.2, then by with
Lower liter of mild temperature is sintered:
1) with heating rate 18-22 DEG C/min, it is warming up to 900-940 DEG C from 680-700 DEG C, and is incubated 8-12 min；
2) with heating rate 23-27 DEG C/min, it is warming up to 1050-1080 DEG C from 900-940 DEG C, and is incubated 14-16min；
3) with heating rate 12-16 DEG C/min, it is warming up to 1180-1200 DEG C from 1050-1080 DEG C, and sinters at this temperature
145-150min, prepares workpiece；
S6: being quenched by the workpiece that step S5 prepares, hardening heat is 810-830 DEG C, and the cool time is 40-50min, then
Being warming up to 920-930 DEG C with heating rate 8-12 DEG C/min, be incubated 70-80min, then be tempered, temperature is 220-
230 DEG C, tempering insulation time is 80-85min, prepares the powder metallurgy transmission gear after lonneal；
S7: the powder metallurgy transmission gear after the lonneal prepare step S6 is in carburizer, at the carburizing medium of gaseous state
In be heated to 820-860 DEG C, be incubated 5.5-6h, be then cooled to 125-128 DEG C, be incubated 6-7h, followed by being cooled to room temperature, system
Obtain the powder metallurgy transmission gear after carburizing；
S8: the powder metallurgy transmission gear after the carburizing prepare step S7 is sent in steam oven, carries out steam process, steam temperature
Degree, for 720-740 DEG C, is incubated 2.5-2.8h, is then incubated 3.5-4h at 170-185 DEG C, finally naturally cools to room temperature, system
Obtain powder metallurgy transmission gear product.
Embodiment 1
A kind of powder metallurgy transmission gear, in units of weight, is made up of following raw material: water-atomized iron powder 560 parts, copper powder 4 parts,
Molybdenum powder 4 parts, vanadium powder 4 parts, nikel powder 2 parts, 2.5 parts of yttrium powder, aluminium powder 2.5 parts, magnesium powder 1.5 parts, cobalt powder 1.2 parts, 1.4 parts of Hydrocerussitum (Ceruse), steel
Ground-slag 2 parts, cupola furnace ground-slag 1.5 parts, ferroalloy ground-slag 1.5 parts, modified 1 part of tree ash powder, graphite powder 0.9 part, unsaturation
0.8 part of polyester resin, silicone oil 0.7 part, carboxymethyl cellulose 0.7 part, aluminium stearate 0.7 part, Polyethylene Glycol 0.6 part, ethylene are double
Stearic amide 0.3 part, fatty acid 0.7 part, carbon fibre 0.6 part, glass fibre 0.4 part, boron nitride 0.2 part, epoxy the third oxygen
Propyl trimethoxy silicane 0.1 part, silicon dioxide 0.08 part, Manganese monosulfide. 0.04 part, acrylate 0.02 part, inhibitor 0.03
Part, binding agent 0.07 part, hardening agent 0.06 part, cutting agent 0.1 part, lubricant 0.14 part, coupling agent 0.12 part, dispersant 0.11
Part；
In described powder stock, the particle diameter of various metal dusts is 200-400 mesh；
Described modified tree ash powder is prepared by the following method and forms: by tree ash first with 30% soak with sulphuric acid 22min,
Then neutralize with sodium hydroxide solution, then wash with deionized water miscellaneous, then mix with NDZ-311 titanate coupling agent, described
The consumption of NDZ-311 titanate coupling agent is the 1.5% of tree ash weight, adds in high speed mixer with Sprayable, stirring
Discharging after 17min, dries, pulverized 550 mesh sieve, prepares modified tree ash powder；
Described glycidoxy-propyltrimethoxy silane is viscosifier；
Described silicon dioxide is antiwear additive；
Described Manganese monosulfide. is processing aid；
Described acrylate is regulator；
Described inhibitor, in units of weight portion, is made up of following raw material: tungsten carbide 14 parts, niobium carbide 12 parts, ramet 10
Part, tungsten nitride 9 parts, titanium carbide 12 parts, molybdenum sulfide 7 parts, cerium fluoride 7 parts, 12 parts of carbon；
Described binding agent, in units of weight portion, is made up of following raw material: nickel aluminide 12 parts, Titanium Trialuminum 11 parts, aluminium nitride 9
Part, 8 parts of zinc；
Described hardening agent is 701 powder hardening agents；
Described cutting agent, in units of weight, is made up of following raw material: cutting oil 13 parts, tricresyl phosphate propyl ester 9 parts, dinonyl naphthalene sulphur
Acid calcium 5 parts, 2,6 ditertiary butyl p cresol 7 parts, dodecenylsuccinic acid 6 parts, triethanolamine borate 9 parts, polyacrylamide 8
Part, dodecylbenzene sodium sulfonate 8 parts, 6 parts of benzoic acid, oleamide 5 parts, tetrasodium ethylenediamine tetraacetate 4 parts, aminocarboxylic acids chela
1 part of mixture, Polyethylene Glycol 5 parts；The preparation method of described cutting agent, comprises the following steps:
Step 1, will cutting oil, tricresyl phosphate propyl ester, dinonylnaphthalene sulfonic acid calcium, 2,6 ditertiary butyl p cresol, laurylene base fourth two
Acid, triethanolamine borate, polyacrylamide, dodecylbenzene sodium sulfonate, benzoic acid mix homogeneously, then heat mixture
To 55 DEG C；
Step 2, adds remaining ingredient in step 1 gained mixture, continues to be heated to 85 DEG C, and be incubated 3h, prepare cutting agent；
Described lubricant, in units of weight, is made up of following raw material: 28 parts of polyvinyl isobutyl ether, chlorinated paraffin 9 parts, oxygen
Change magnesium microgranule 6 parts, aluminium stearate 12 parts, carboxylic acid amide 10 parts, acetate butyl 13 parts, boric acid 8 parts, N-Methyl pyrrolidone 8 parts,
Dimethylformamide 7 parts；Described lubricant is prepared by following preparation method:
The raw material components of lubricant is joined in reactor and react 15h in 450 DEG C, then use after solidification particle is had and cut
The cone mill of shearing, as mechanical dispersion equipment, is ground dispersion, prepares lubricant；
Described coupling agent is epoxy silane class coupling agent；
Described dispersant is hexenyl bis-stearamides；
The preparation method of described powder metallurgy transmission gear, comprises the following steps:
S1: the iron powder that makes water fogging, copper powder, molybdenum powder, vanadium powder, nikel powder, yttrium powder, aluminium powder, magnesium powder, cobalt powder, Hydrocerussitum (Ceruse), graphite powder, poly-second
Glycol, fatty acid, carbon fibre, glass fibre join in blender, stir 12min, prepare under rotating speed is 150r/min
Mixture A；
S2: unsaturated polyester resin, carboxymethyl cellulose, aluminium stearate, ethylene bis stearic acid amide, boron nitride are added stirring
Machine stirs under rotating speed is 250r/min 14min, prepares mixture B；
S3: by step S1 prepare mixture A, step S2 prepare mixture B, steel-making slag powder, cupola furnace ground-slag, ferroalloy slag
Powder, modified tree ash powder, silicone oil, glycidoxy-propyltrimethoxy silane, silicon dioxide, Manganese monosulfide., esters of acrylic acid are adjusted
Joint agent, inhibitor, binding agent, hardening agent, cutting agent, lubricant, coupling agent, dispersant join in blender, in temperature are
240 DEG C, rotating speed is stirring 3h under 350r/min, prepares mixture C；
S4: the mixture C that step S3 prepares is put into press, is sent in the product mold preset by press by described mixture C,
And it is pressed into green part under pressure is 590MPa；
S5: the green part that step S4 prepares be placed in sintering furnace, in the protective atmosphere of hydrogen and nitrogen mixed gas, first exists
At 690 DEG C, presintering 48min, wherein hydrogen is 2:98 with the volume ratio of nitrogen, then burns by following liter of mild temperature
Knot:
1) with 20 DEG C/min of heating rate, it is warming up to 920 DEG C from 690 DEG C, and is incubated 10 min；
2) with 25 DEG C/min of heating rate, it is warming up to 1065 DEG C from 920 DEG C, and is incubated 15min；
3) with 14 DEG C/min of heating rate, it is warming up to 1180 DEG C from 1065 DEG C, and sinters 150min at this temperature, prepare work
Part；
S6: being quenched by the workpiece that step S5 prepares, hardening heat is 820 DEG C, and the cool time is 45min, then to heat up
10 DEG C/min of speed is warming up to 925 DEG C, is incubated 75min, then is tempered, and temperature is 225 DEG C, and tempering insulation time is
82min, prepares the powder metallurgy transmission gear after lonneal；
S7: the powder metallurgy transmission gear after the lonneal prepare step S6 is in carburizer, at the carburizing medium of gaseous state
In be heated to 840 DEG C, be incubated 5.8h, be then cooled to 126 DEG C, be incubated 6.5h, followed by being cooled to room temperature, prepare after carburizing
Powder metallurgy transmission gear；
S8: the powder metallurgy transmission gear after the carburizing prepare step S7 is sent in steam oven, carries out steam process, steam temperature
Degree is 730 DEG C, is incubated 2.6h, is then incubated 3.8h at 178 DEG C, finally naturally cools to room temperature, prepare powder metallurgy transmission
Gear product.
Embodiment 2
A kind of powder metallurgy transmission gear, in units of weight, is made up of following raw material: water-atomized iron powder 282 parts, copper powder 2 parts,
Molybdenum powder 2 parts, vanadium powder 3 parts, nikel powder 1 part, 2 parts of yttrium powder, aluminium powder 2 parts, magnesium powder 1 part, cobalt powder 1 part, 1 part of Hydrocerussitum (Ceruse), steel-making slag powder 1.5 parts,
Cupola furnace ground-slag 1 part, ferroalloy ground-slag 1 part, modified 0.8 part of tree ash powder, graphite powder 0.6 part, unsaturated polyester resin 0.6
Part, silicone oil 0.4 part, carboxymethyl cellulose 0.6 part, aluminium stearate 0.3 part, Polyethylene Glycol 0.4 part, ethylene bis stearic acid amide
0.2 part, fatty acid 0.5 part, carbon fibre 0.4 part, glass fibre 0.3 part, boron nitride 0.2 part, epoxypropoxy trimethoxy
Base silane 0.1 part, silicon dioxide 0.05 part, Manganese monosulfide. 0.03 part, acrylate 0.01 part, inhibitor 0.02 part, binding agent
0.06 part, hardening agent 0.04 part, cutting agent 0.08 part, lubricant 0.12 part, coupling agent 0.1 part, dispersant 0.1 part；
In described powder stock, the particle diameter of various metal dusts is 200-400 mesh；
Described modified tree ash powder is prepared by the following method and forms: by tree ash first with 28% soak with sulphuric acid 25min,
Then neutralize with sodium hydroxide solution, then wash with deionized water miscellaneous, then mix with NDZ-311 titanate coupling agent, described
The consumption of NDZ-311 titanate coupling agent is the 1.2% of tree ash weight, adds in high speed mixer with Sprayable, stirring
Discharging after 16min, dries, pulverized 500 mesh sieve, prepares modified tree ash powder；
Described glycidoxy-propyltrimethoxy silane is viscosifier；
Described silicon dioxide is antiwear additive；
Described Manganese monosulfide. is processing aid；
Described acrylate is regulator；
Described inhibitor, in units of weight portion, is made up of following raw material: tungsten carbide 12 parts, niobium carbide 10 parts, ramet 10
Part, tungsten nitride 8 parts, titanium carbide 10 parts, molybdenum sulfide 6 parts, cerium fluoride 5 parts, 8 parts of carbon；
Described binding agent, in units of weight portion, is made up of following raw material: nickel aluminide 9 parts, Titanium Trialuminum 8 parts, aluminium nitride 6 parts,
5 parts of zinc；
Described hardening agent is 701 powder hardening agents；
Described cutting agent, in units of weight, is made up of following raw material: cutting oil 12 parts, tricresyl phosphate propyl ester 8 parts, dinonyl naphthalene sulphur
Acid calcium 4 parts, 2,6 ditertiary butyl p cresol 5 parts, dodecenylsuccinic acid 5 parts, triethanolamine borate 8 parts, polyacrylamide 6
Part, dodecylbenzene sodium sulfonate 7 parts, 5 parts of benzoic acid, oleamide 3 parts, tetrasodium ethylenediamine tetraacetate 2 parts, aminocarboxylic acids chela
1 part of mixture, Polyethylene Glycol 7 parts；The preparation method of described cutting agent, comprises the following steps:
Step 1, will cutting oil, tricresyl phosphate propyl ester, dinonylnaphthalene sulfonic acid calcium, 2,6 ditertiary butyl p cresol, laurylene base fourth two
Acid, triethanolamine borate, polyacrylamide, dodecylbenzene sodium sulfonate, benzoic acid mix homogeneously, then heat mixture
To 52 DEG C；
Step 2, adds remaining ingredient in step 1 gained mixture, continues to be heated to 76 DEG C, and be incubated 3.5h, prepare cutting
Agent；
Described lubricant, in units of weight, is made up of following raw material: 18 parts of polyvinyl isobutyl ether, chlorinated paraffin 6 parts, oxygen
Change magnesium microgranule 4 parts, aluminium stearate 6 parts, carboxylic acid amide 8 parts, acetate butyl 12 parts, boric acid 6 parts, N-Methyl pyrrolidone 7 parts, two
Methylformamide 6 parts；Described lubricant is prepared by following preparation method:
The raw material components of lubricant is joined in reactor and react 19h in 420 DEG C, then use after solidification particle is had and cut
The cone mill of shearing, as mechanical dispersion equipment, is ground dispersion, prepares lubricant；
Described coupling agent is epoxy silane class coupling agent；
Described dispersant is hexenyl bis-stearamides；
The preparation method of described powder metallurgy transmission gear, comprises the following steps:
S1: the iron powder that makes water fogging, copper powder, molybdenum powder, vanadium powder, nikel powder, yttrium powder, aluminium powder, magnesium powder, cobalt powder, Hydrocerussitum (Ceruse), graphite powder, poly-second
Glycol, fatty acid, carbon fibre, glass fibre join in blender, stir 14min, prepare under rotating speed is 100r/min
Mixture A；
S2: unsaturated polyester resin, carboxymethyl cellulose, aluminium stearate, ethylene bis stearic acid amide, boron nitride are added stirring
Machine stirs under rotating speed is 200r/min 16min, prepares mixture B；
S3: by step S1 prepare mixture A, step S2 prepare mixture B, steel-making slag powder, cupola furnace ground-slag, ferroalloy slag
Powder, modified tree ash powder, silicone oil, glycidoxy-propyltrimethoxy silane, silicon dioxide, Manganese monosulfide., esters of acrylic acid are adjusted
Joint agent, inhibitor, binding agent, hardening agent, cutting agent, lubricant, coupling agent, dispersant join in blender, in temperature are
200 DEG C, rotating speed is stirring 4h under 300r/min, prepares mixture C；
S4: the mixture C that step S3 prepares is put into press, is sent in the product mold preset by press by described mixture C,
And it is pressed into green part under pressure is 560MPa；
S5: the green part that step S4 prepares be placed in sintering furnace, in the protective atmosphere of hydrogen and nitrogen mixed gas, first exists
At 680 DEG C, presintering 50min, wherein hydrogen is 1.8:98.2 with the volume ratio of nitrogen, then carries out by following liter of mild temperature
Sintering:
1) with 18 DEG C/min of heating rate, it is warming up to 900 DEG C from 680 DEG C, and is incubated 12 min；
2) with 23 DEG C/min of heating rate, it is warming up to 1050 DEG C from 900 DEG C, and is incubated 16min；
3) with 12 DEG C/min of heating rate, it is warming up to 1200 DEG C from 1050 DEG C, and sinters 150min at this temperature, prepare work
Part；
S6: being quenched by the workpiece that step S5 prepares, hardening heat is 810 DEG C, and the cool time is 50min, then to heat up
8 DEG C/min of speed is warming up to 920 DEG C, is incubated 80min, then is tempered, and temperature is 220 DEG C, and tempering insulation time is
85min, prepares the powder metallurgy transmission gear after lonneal；
S7: the powder metallurgy transmission gear after the lonneal prepare step S6 is in carburizer, at the carburizing medium of gaseous state
In be heated to 820 DEG C, be incubated 6h, be then cooled to 125 DEG C, be incubated 7h, followed by being cooled to room temperature, prepare the powder after carburizing
Metallurgical travelling gear；
S8: the powder metallurgy transmission gear after the carburizing prepare step S7 is sent in steam oven, carries out steam process, steam temperature
Degree is 720 DEG C, is incubated 2.8h, is then incubated 4h at 170 DEG C, finally naturally cools to room temperature, prepare powder metallurgy driving cog
Wheel product.
Embodiment 3
A kind of powder metallurgy transmission gear, in units of weight, is made up of following raw material: water-atomized iron powder 846 parts, copper powder 6 parts,
Molybdenum powder 5 parts, vanadium powder 5 parts, nikel powder 3 parts, 3 parts of yttrium powder, aluminium powder 3 parts, magnesium powder 2 parts, cobalt powder 1.5 parts, 1.8 parts of Hydrocerussitum (Ceruse), steel-making slag powder 2.5
Part, cupola furnace ground-slag 2 parts, ferroalloy ground-slag 2 parts, modified 1.2 parts of tree ash powder, graphite powder 1.2 parts, unsaturated polyester resin
1 part, silicone oil 0.9 part, carboxymethyl cellulose 0.8 part, aluminium stearate 1 part, Polyethylene Glycol 0.8 part, the double stearic acid acyl 0.2-of ethylene
0.4 part, fatty acid 0.8 part, carbon fibre 0.7 part, glass fibre 0.5 part, boron nitride 0.3 part, epoxypropoxy trimethoxy
Base silane 0.2 part, silicon dioxide 0.1 part, Manganese monosulfide. 0.05 part, acrylate 0.03 part, inhibitor 0.04 part, binding agent 0.08
Part, hardening agent 0.08 part, cutting agent 0.12 part, lubricant 0.15 part, coupling agent 0.14 part, dispersant 0.12 part；
In described powder stock, the particle diameter of various metal dusts is 200-400 mesh；
Described modified tree ash powder is prepared by the following method and forms: by tree ash first with 32% soak with sulphuric acid 20min,
Then neutralize with sodium hydroxide solution, then wash with deionized water miscellaneous, then mix with NDZ-311 titanate coupling agent, described
The consumption of NDZ-311 titanate coupling agent is the 1.8% of tree ash weight, adds in high speed mixer with Sprayable, stirring
Discharging after 18min, dries, pulverized 600 mesh sieve, prepares modified tree ash powder；
Described glycidoxy-propyltrimethoxy silane is viscosifier；
Described silicon dioxide is antiwear additive；
Described Manganese monosulfide. is processing aid；
Described acrylate is regulator；
Described inhibitor, in units of weight portion, is made up of following raw material: tungsten carbide 16 parts, niobium carbide 14 parts, ramet 12
Part, tungsten nitride 10 parts, titanium carbide 15 parts, molybdenum sulfide 8 parts, cerium fluoride 9 parts, 15 parts of carbon；
Described binding agent, in units of weight portion, is made up of following raw material: nickel aluminide 15 parts, Titanium Trialuminum 14 parts, aluminium nitride 12
Part, 10 parts of zinc；
Described hardening agent is 701 powder hardening agents；
Described cutting agent, in units of weight, is made up of following raw material: cutting oil 14 parts, tricresyl phosphate propyl ester 10 parts, dinonyl naphthalene
Sulfoacid calcium 6 parts, 2,6 ditertiary butyl p cresol 9 parts, dodecenylsuccinic acid 7 parts, triethanolamine borate 10 parts, polyacrylamide
Amine 10 parts, dodecylbenzene sodium sulfonate 9 parts, 8 parts of benzoic acid, oleamide 7 parts, tetrasodium ethylenediamine tetraacetate 6 parts, amino carboxylic acid
Quasi-chelate compound 2 parts, Polyethylene Glycol 13 parts；The preparation method of described cutting agent, comprises the following steps:
Step 1, will cutting oil, tricresyl phosphate propyl ester, dinonylnaphthalene sulfonic acid calcium, 2,6 ditertiary butyl p cresol, laurylene base fourth two
Acid, triethanolamine borate, polyacrylamide, dodecylbenzene sodium sulfonate, benzoic acid mix homogeneously, then heat mixture
To 58 DEG C；
Step 2, adds remaining ingredient in step 1 gained mixture, continues to be heated to 92 DEG C, and be incubated 2.5h, prepare cutting
Agent；
Described lubricant, in units of weight, is made up of following raw material: 38 parts of polyvinyl isobutyl ether, chlorinated paraffin 12 parts, oxygen
Change magnesium microgranule 8 parts, aluminium stearate 19 parts, carboxylic acid amide 12 parts, acetate butyl 14 parts, boric acid 10 parts, N-Methyl pyrrolidone 10
Part, dimethylformamide 9 parts；Described lubricant is prepared by following preparation method:
The raw material components of lubricant is joined in reactor and react 11h in 480 DEG C, then use after solidification particle is had and cut
The cone mill of shearing, as mechanical dispersion equipment, is ground dispersion, prepares lubricant；
Described coupling agent is epoxy silane class coupling agent；
Described dispersant is hexenyl bis-stearamides；
The preparation method of described powder metallurgy transmission gear, comprises the following steps:
S1: the iron powder that makes water fogging, copper powder, molybdenum powder, vanadium powder, nikel powder, yttrium powder, aluminium powder, magnesium powder, cobalt powder, Hydrocerussitum (Ceruse), graphite powder, poly-second
Glycol, fatty acid, carbon fibre, glass fibre join in blender, stir 10min, prepare under rotating speed is 200r/min
Mixture A；
S2: unsaturated polyester resin, carboxymethyl cellulose, aluminium stearate, ethylene bis stearic acid amide, boron nitride are added stirring
Machine stirs under rotating speed is 300r/min 12min, prepares mixture B；
S3: by step S1 prepare mixture A, step S2 prepare mixture B, steel-making slag powder, cupola furnace ground-slag, ferroalloy slag
Powder, modified tree ash powder, silicone oil, glycidoxy-propyltrimethoxy silane, silicon dioxide, Manganese monosulfide., esters of acrylic acid are adjusted
Joint agent, inhibitor, binding agent, hardening agent, cutting agent, lubricant, coupling agent, dispersant join in blender, in temperature are
280 DEG C, rotating speed is stirring 2h under 400r/min, prepares mixture C；
S4: the mixture C that step S3 prepares is put into press, is sent in the product mold preset by press by described mixture C,
And it is pressed into green part under pressure is 620MPa；
S5: the green part that step S4 prepares be placed in sintering furnace, in the protective atmosphere of hydrogen and nitrogen mixed gas, first exists
At 700 DEG C, presintering 45min, wherein hydrogen is 2.2:97.8 with the volume ratio of nitrogen, then carries out by following liter of mild temperature
Sintering:
1) with 22 DEG C/min of heating rate, it is warming up to 940 DEG C from 700 DEG C, and is incubated 8 min；
2) with 27 DEG C/min of heating rate, it is warming up to 1080 DEG C from 940 DEG C, and is incubated 14min；
3) with 16 DEG C/min of heating rate, it is warming up to 1200 DEG C from 1080 DEG C, and sinters 145min at this temperature, prepare work
Part；
S6: being quenched by the workpiece that step S5 prepares, hardening heat is 830 DEG C, and the cool time is 40min, then to heat up
12 DEG C/min of speed is warming up to 930 DEG C, is incubated 70min, then is tempered, and temperature is 230 DEG C, and tempering insulation time is
80min, prepares the powder metallurgy transmission gear after lonneal；
S7: the powder metallurgy transmission gear after the lonneal prepare step S6 is in carburizer, at the carburizing medium of gaseous state
In be heated to 860 DEG C, be incubated 5.5h, be then cooled to 128 DEG C, be incubated 6h, followed by being cooled to room temperature, prepare the powder after carburizing
The metallurgical travelling gear in end；
S8: the powder metallurgy transmission gear after the carburizing prepare step S7 is sent in steam oven, carries out steam process, steam temperature
Degree is 740 DEG C, is incubated 2.5h, is then incubated 3.5h at 185 DEG C, finally naturally cools to room temperature, prepare powder metallurgy transmission
Gear product.
Embodiment 1-3 preparing powder metallurgy transmission gear and carries out performance test, result is as shown in the table.
| Embodiment | Percentage elongation (%) | The contraction percentage of area (%) | Tensile strength (MPa) | Yield strength (MPa) | Hardness (HRC) | Stock utilization (%) | Consistency (%) |
| 1 | 18.39 | 54.06 | 867.29 | 568.02 | 122.32 | 92.65 | 92.32 |
| 2 | 17.95 | 51.27 | 828.94 | 543.01 | 109.54 | 92.11 | 91.63 |
| 3 | 18.52 | 56.67 | 897.47 | 589.48 | 134.11 | 93.08 | 92.82 |
From upper table result it can be seen that the powder metallurgy transmission gear that the present invention prepares has good combination property, its
Middle percentage elongation has reached more than 17.95%, and the contraction percentage of area has reached more than 51.27%, and tensile strength has reached 828.94MPa
Above, yield strength has reached more than 543.01MPa, and hardness has reached more than 109.54HRC, and stock utilization reaches
More than 92.11%, consistency has reached more than 91.63%, it is seen that the powder metallurgy transmission gear global density that the present invention prepares is equal
Even, consistency is high, and elongation percentage and the contraction percentage of area are big, and wearability, intensity and hardness are preferable, and stock utilization is high.
Above content it cannot be assumed that the present invention be embodied as be confined to these explanation, technology belonging to the present invention is led
For the those of ordinary skill in territory, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace,
All should be considered as belonging to the scope of patent protection that the present invention is determined by the claims submitted to.
Claims (7)
1. a powder metallurgy transmission gear, it is characterised in that in units of weight, is made up of following raw material: water-atomized iron powder
282-846 part, copper powder 2-6 part, molybdenum powder 2-5 part, vanadium powder 3-5 part, nikel powder 1-3 part, yttrium powder 2-3 part, aluminium powder 2-3 part, magnesium powder 1-2
Part, cobalt powder 1-1.5 part, Hydrocerussitum (Ceruse) 1-1.8 part, steel-making slag powder 1.5-2.5 part, cupola furnace ground-slag 1-2 part, ferroalloy ground-slag 1-2 part, change
Property tree ash powder 0.8-1.2 part, graphite powder 0.6-1.2 part, unsaturated polyester resin 0.6-1 part, silicone oil 0.4-0.9 part, carboxylic
Methylcellulose 0.6-0.8 part, aluminium stearate 0.3-1 part, Polyethylene Glycol 0.4-0.8 part, ethylene bis stearic acid amide 0.2-0.4
Part, fatty acid 0.5-0.8 part, carbon fibre 0.4-0.7 part, glass fibre 0.3-0.5 part, boron nitride 0.2-0.3 part, epoxy third
Oxygen propyl trimethoxy silicane 0.1-0.2 part, silicon dioxide 0.05-0.1 part, Manganese monosulfide. 0.03-0.05 part, acrylate
0.01-0.03 part, inhibitor 0.02-0.04 part, binding agent 0.06-0.08 part, hardening agent 0.04-0.08 part, cutting agent 0.08-
0.12 part, lubricant 0.12-0.15 part, coupling agent 0.1-0.14 part, dispersant 0.1-0.12 part；
Described inhibitor, in units of weight portion, is made up of following raw material: tungsten carbide 12-16 part, niobium carbide 10-14 part, carbonization
Tantalum 10-12 part, tungsten nitride 8-10 part, titanium carbide 10-15 part, molybdenum sulfide 6-8 part, cerium fluoride 5-9 part, carbon 8-15 part；
Described binding agent, in units of weight portion, is made up of following raw material: nickel aluminide 9-15 part, Titanium Trialuminum 8-14 part, nitridation
Aluminum 6-12 part, zinc 5-10 part；
The preparation method of described powder metallurgy transmission gear, comprises the following steps:
S1: the iron powder that makes water fogging, copper powder, molybdenum powder, vanadium powder, nikel powder, yttrium powder, aluminium powder, magnesium powder, cobalt powder, Hydrocerussitum (Ceruse), graphite powder, poly-second
Glycol, fatty acid, carbon fibre, glass fibre join in blender, stir 10-under rotating speed is 100-200r/min
14min, prepares mixture A；
S2: unsaturated polyester resin, carboxymethyl cellulose, aluminium stearate, ethylene bis stearic acid amide, boron nitride are added stirring
Machine stirs under rotating speed is 200-300r/min 12-16min, prepares mixture B；
S3: by step S1 prepare mixture A, step S2 prepare mixture B, steel-making slag powder, cupola furnace ground-slag, ferroalloy slag
Powder, modified tree ash powder, silicone oil, glycidoxy-propyltrimethoxy silane, silicon dioxide, Manganese monosulfide., acrylate, suppression
Agent, binding agent, hardening agent, cutting agent, lubricant, coupling agent, dispersant join in blender, are 200-280 DEG C in temperature,
Rotating speed is stirring 2-4h under 300-400r/min, prepares mixture C；
S4: the mixture C that step S3 prepares is put into press, is sent in the product mold preset by press by described mixture C,
And it is pressed into green part under pressure is 560-620MPa；
S5: the green part that step S4 prepares be placed in sintering furnace, in the protective atmosphere of hydrogen and nitrogen mixed gas, first exists
At 680-700 DEG C, presintering 45-50min, wherein the volume ratio of hydrogen and nitrogen is 1.8-2.2:97.8-98.2, then by with
Lower liter of mild temperature is sintered:
1) with heating rate 18-22 DEG C/min, it is warming up to 900-940 DEG C from 680-700 DEG C, and is incubated 8-12 min；
2) with heating rate 23-27 DEG C/min, it is warming up to 1050-1080 DEG C from 900-940 DEG C, and is incubated 14-16min；
3) with heating rate 12-16 DEG C/min, it is warming up to 1180-1200 DEG C from 1050-1080 DEG C, and sinters at this temperature
145-150min, prepares workpiece；
S6: being quenched by the workpiece that step S5 prepares, hardening heat is 810-830 DEG C, and the cool time is 40-50min, then
Being warming up to 920-930 DEG C with heating rate 8-12 DEG C/min, be incubated 70-80min, then be tempered, temperature is 220-
230 DEG C, tempering insulation time is 80-85min, prepares the powder metallurgy transmission gear after lonneal；
S7: the powder metallurgy transmission gear after the lonneal prepare step S6 is in carburizer, at the carburizing medium of gaseous state
In be heated to 820-860 DEG C, be incubated 5.5-6h, be then cooled to 125-128 DEG C, be incubated 6-7h, followed by being cooled to room temperature, system
Obtain the powder metallurgy transmission gear after carburizing；
S8: the powder metallurgy transmission gear after the carburizing prepare step S7 is sent in steam oven, carries out steam process, steam temperature
Degree, for 720-740 DEG C, is incubated 2.5-2.8h, is then incubated 3.5-4h at 170-185 DEG C, finally naturally cools to room temperature, system
Obtain powder metallurgy transmission gear product.
Powder metallurgy transmission gear the most according to claim 1, it is characterised in that described modified tree ash powder by with
Lower section method is prepared from: by tree ash first with the soak with sulphuric acid 20-25min of 28%-32%, then with in sodium hydroxide solution
With, then wash miscellaneous with deionized water, then mix with NDZ-311 titanate coupling agent, described NDZ-311 titanate coupling agent
Consumption is the 1.2%-1.8% of tree ash weight, adds in high speed mixer with Sprayable, discharging after stirring 16-18min,
Dry, pulverized 500-600 mesh sieve, prepare modified tree ash powder.
Powder metallurgy transmission gear the most according to claim 1, it is characterised in that described hardening agent is 701 powder hardening agents.
Powder metallurgy transmission gear the most according to claim 1, it is characterised in that described cutting agent in units of weight,
Be made up of following raw material: cutting oil 12-14 part, tricresyl phosphate propyl ester 8-10 part, dinonylnaphthalene sulfonic acid calcium 4-6 part, 2, the tertiary fourth of 6-bis-
Base paracresol 5-9 part, dodecenylsuccinic acid 5-7 part, triethanolamine borate 8-10 part, polyacrylamide 6-10 part, 12
Sodium alkyl benzene sulfonate 7-9 part, benzoic acid 5-8 part, oleamide 3-7 part, tetrasodium ethylenediamine tetraacetate 2-6 part, aminocarboxylic acids
Chelating agen 1-2 part, Polyethylene Glycol 7-13 part.
Powder metallurgy transmission gear the most according to claim 1, it is characterised in that described lubricant, in units of weight,
It is made up of following raw material: polyvinyl isobutyl ether 18-38 part, chlorinated paraffin 6-12 part, magnesium oxide particle 4-8 part, aluminium stearate
6-19 part, carboxylic acid amide 8-12 part, acetate butyl 12-14 part, boric acid 6-10 part, N-Methyl pyrrolidone 7-10 part, dimethyl
Methanamide 6-9 part.
Powder metallurgy transmission gear the most according to claim 1, it is characterised in that described coupling agent is that epoxy silane class is even
Connection agent.
Powder metallurgy transmission gear the most according to claim 1, it is characterised in that described dispersant is that hexenyl is double stearic
Amide.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559930A (en) * | 2018-04-02 | 2018-09-21 | 张庆 | A kind of iron-base powder metallurgy material and preparation method thereof |
| CN112157255A (en) * | 2020-09-12 | 2021-01-01 | 天鑫精工科技(威海)有限公司 | Corrosion-resistant die material and preparation method thereof |
| CN117600459A (en) * | 2023-11-06 | 2024-02-27 | 广东凯洋新材料有限公司 | Heat dissipation bracket and preparation method thereof |
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| CN103223486A (en) * | 2013-03-30 | 2013-07-31 | 安徽省恒宇粉末冶金有限公司 | Powder metallurgy duplicate gear and preparation method thereof |
| CN103231051A (en) * | 2013-03-30 | 2013-08-07 | 安徽省恒宇粉末冶金有限公司 | Powder metallurgy bevel gear and preparation method thereof |
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| CN108559930A (en) * | 2018-04-02 | 2018-09-21 | 张庆 | A kind of iron-base powder metallurgy material and preparation method thereof |
| CN112157255A (en) * | 2020-09-12 | 2021-01-01 | 天鑫精工科技(威海)有限公司 | Corrosion-resistant die material and preparation method thereof |
| CN117600459A (en) * | 2023-11-06 | 2024-02-27 | 广东凯洋新材料有限公司 | Heat dissipation bracket and preparation method thereof |
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Application publication date: 20161109 |