CN104999240A - Gear machining and treating process - Google Patents
Gear machining and treating process Download PDFInfo
- Publication number
- CN104999240A CN104999240A CN201510462171.0A CN201510462171A CN104999240A CN 104999240 A CN104999240 A CN 104999240A CN 201510462171 A CN201510462171 A CN 201510462171A CN 104999240 A CN104999240 A CN 104999240A
- Authority
- CN
- China
- Prior art keywords
- gear
- carry out
- machining
- meshbeltfurnace
- carbon potential
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
-
- 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
- C23C8/08—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 only one element being applied
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a gear machining and treating process. The gear machining and treating process includes the steps that blanking and blank manufacturing are carried out; a gear blank is machined; rough machining and semi-finish machining of a tooth form are conducted, i.e., according to a precision requirement, tooth grooves are cut in the whole blank and a corresponding allowance for finish machining is reserved on the groove side at the same; the gear end is chamfered and burrs are removed; heat treatment is carried out; tooth form machining is carried out on an unfinished product subjected to heat treatment by adopting the method of gear grinding or gear honing or gear lapping again; strengthened shot peening is carried out so as to improve the endurance bending strength and contact fatigue strength of a gear; and cleaning is carried out. Through the gear machining and treating process, the content of retained austenite on the surface of the gear and the thickness of a non-martensite layer on the surface of the gear are reduced; by the adoption of the high-temperature carbon potential changing method, production efficiency is improved; thus, the tissue performance of the tissue surface is greatly improved, and the phenomenon of tooth breakage cannot occur.
Description
Technical field
the present invention relates to casting technology field, particularly relate to a kind of Gear Processing treatment process.
Background technology
The application of gear in machine driving and whole mechanical field is extremely extensive, but the processing technology of prior art middle gear imperfection, and cause the gear quality produced undesirable, do not reach instructions for use, percent defective is high, causes unnecessary waste to enterprise.Traditional carburization process oozes by force in 920 ~ 930 DEG C, carbon potential 1.2%CP, is incubated 7 ~ 9 hours, then carry out diffusion temperature 920 ~ 930 DEG C, carbon potential 0.8%CP, be incubated 5 ~ 7 hours, be cooled to hardening heat afterwards to quench, the process time is long, and efficiency is low.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Gear Processing treatment process, ensures the quality of gear, rate of reducing the number of rejects and seconds, the effective problem of resource waste solving enterprise, and adopts high temperature change carbon potential method to enhance productivity.
For solving the problems of the technologies described above, the present invention relates to a kind of Gear Processing treatment process, comprising:
1) blanking, blank manufacture: adopt forging or casting method processing and manufacturing gear blank;
2) tooth base processing: processing spline, keyway, screw thread, selects to draw, insert, car, mill method processes;
3) profile of tooth roughing and semifinishing: according to required precision, cut out teeth groove from integral workblank, reserves corresponding allowance for finish in groove side simultaneously;
4) end relief deburring: increment is trimmed to definite shape on request, removes tooth both sides sharp edge, burr simultaneously;
5) heat treatment: adopt modified, carburizing and quenching or high-frequency quenching processing method;
6) method of roll flute, gear honing or gear lapping is adopted again to carry out tooth Profile Machining to the unfinished work after heat treatment;
7) strengthened shot peening is in order to improve bending fatigue strength and the contact fatigue strength of gear;
8) clean: the first step, to be used by gear gasoline to carry out immersions 1-5 hour, after taking out, use degreaser carries out cleaning of deoiling;
Second step, gear is carried out magnetization treatment, use weak caustic solution to soak after magnetization, then wash weak base off with boiling water molten
Liquid; 3rd step, employing ultrasonic equipment carry out ultrasonic cleaning; Carry out after taking-up putting into pond, carry out high pressure with high pressure water spray gun
Rinse; When high pressure water spray gun carries out high pressure washing, the angle of rotatable high pressure water spray gun carries out flushing in all directions; Carry out annealing in process, temperature 200-300 degree Celsius after 4th step, flushing, then gear is demagnetized; 5th step, uses running water to carry out rinsing, then uses air inducing equipment to dry up, dries up rear effects on surface and carry out electrodeposited chromium; Plating afterwash is dried.
The heat treatment of step 5) comprises three carburizings and triple diffusion, and concrete steps are as follows:
First time oozes by force, and furnace temperature maintains 960-968 DEG C, is incubated as 160-180min, in meshbeltfurnace, carbon potential is in 1.54-1.57%CP, first time diffusion, and furnace temperature maintains 950-958 DEG C, insulation 110-135min, in meshbeltfurnace, carbon potential is 1.20-1.23%CP; Second time is oozed by force, and furnace temperature maintains 950-958 DEG C, insulation 80-85min, and in meshbeltfurnace, carbon potential is 1.28-1.35%CP, second time diffusion, and furnace temperature maintains 940-948 DEG C, insulation 80-95min, and in meshbeltfurnace, carbon potential is 0.95-1.2%CP; Third time oozes by force, and furnace temperature maintains 938-943 DEG C, insulation 45-50min, and in meshbeltfurnace, carbon potential is 1.17-1.33% CP, third time diffusion, and furnace temperature maintains 925-940 DEG C, and insulation 45-60min, in meshbeltfurnace, carbon potential is 0.95-0.98%CP.
Beneficial effect of the present invention is: by providing a kind of Gear Processing treatment process, and gear surface residual austenite content and non-martensite layer thickness are reduced; Adopt high temperature to become carbon potential method to enhance productivity; Tissue surface structure property is improved greatly, tooth can not be produced and collapse phenomenon.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.
The present invention relates to a kind of Gear Processing treatment process, comprise the steps:
1) blanking, blank manufacture: adopt forging or casting method processing and manufacturing gear blank;
2) tooth base processing: processing spline, keyway, screw thread, selects to draw, insert, car, mill method processes;
3) profile of tooth roughing and semifinishing: according to required precision, cut out teeth groove from integral workblank, reserves corresponding allowance for finish in groove side simultaneously;
4) end relief deburring: increment is trimmed to definite shape on request, removes tooth both sides sharp edge, burr simultaneously;
5) heat treatment: adopt modified, carburizing and quenching or high-frequency quenching processing method;
6) method of roll flute, gear honing or gear lapping is adopted again to carry out tooth Profile Machining to the unfinished work after heat treatment;
7) strengthened shot peening is in order to improve bending fatigue strength and the contact fatigue strength of gear;
8) clean: the first step, to be used by gear gasoline to carry out immersions 1-5 hour, after taking out, use degreaser carries out cleaning of deoiling;
Second step, gear is carried out magnetization treatment, use weak caustic solution to soak after magnetization, then wash weak base off with boiling water molten
Liquid; 3rd step, employing ultrasonic equipment carry out ultrasonic cleaning; Carry out after taking-up putting into pond, carry out high pressure with high pressure water spray gun
Rinse; When high pressure water spray gun carries out high pressure washing, the angle of rotatable high pressure water spray gun carries out flushing in all directions; Carry out annealing in process, temperature 200-300 degree Celsius after 4th step, flushing, then gear is demagnetized; 5th step, uses running water to carry out rinsing, then uses air inducing equipment to dry up, dries up rear effects on surface and carry out electrodeposited chromium; Plating afterwash is dried.
The heat treatment of step 5) comprises three carburizings and triple diffusion, and concrete steps are as follows:
First time oozes by force, and furnace temperature maintains 960-968 DEG C, is incubated as 160-180min, in meshbeltfurnace, carbon potential is in 1.54-1.57%CP, first time diffusion, and furnace temperature maintains 950-958 DEG C, insulation 110-135min, in meshbeltfurnace, carbon potential is 1.20-1.23%CP; Second time is oozed by force, and furnace temperature maintains 950-958 DEG C, insulation 80-85min, and in meshbeltfurnace, carbon potential is 1.28-1.35%CP, second time diffusion, and furnace temperature maintains 940-948 DEG C, insulation 80-95min, and in meshbeltfurnace, carbon potential is 0.95-1.2%CP; Third time oozes by force, and furnace temperature maintains 938-943 DEG C, insulation 45-50min, and in meshbeltfurnace, carbon potential is 1.17-1.33% CP, third time diffusion, and furnace temperature maintains 925-940 DEG C, and insulation 45-60min, in meshbeltfurnace, carbon potential is 0.95-0.98%CP.
Be more than better embodiment of the present invention, but protection scope of the present invention is not limited thereto.Any those of ordinary skill in the art are in the technical scope disclosed by the present invention, and the conversion expected without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore the protection domain that protection scope of the present invention should limit with claim is as the criterion.
Claims (2)
1. a Gear Processing treatment process, is characterized in that, comprises the steps
Blanking, blank manufacture: adopt forging or casting method processing and manufacturing gear blank;
Tooth base is processed: processing spline, keyway, screw thread, selects to draw, insert, car, mill method process;
Profile of tooth roughing and semifinishing: according to required precision, cut out teeth groove from integral workblank, reserves corresponding allowance for finish in groove side simultaneously;
End relief deburring: increment is trimmed to definite shape on request, removes tooth both sides sharp edge, burr simultaneously;
Heat treatment: adopt modified, carburizing and quenching or high-frequency quenching processing method;
The method of roll flute, gear honing or gear lapping is adopted again to carry out tooth Profile Machining to the unfinished work after heat treatment;
Strengthened shot peening is in order to improve bending fatigue strength and the contact fatigue strength of gear;
Cleaning: the first step, to be used by gear gasoline to carry out immersions 1-5 hour, after taking out, use degreaser carries out cleaning of deoiling;
Second step, gear is carried out magnetization treatment, use weak caustic solution to soak after magnetization, then wash weak base off with boiling water molten
Liquid; 3rd step, employing ultrasonic equipment carry out ultrasonic cleaning; Carry out after taking-up putting into pond, carry out high pressure with high pressure water spray gun
Rinse; When high pressure water spray gun carries out high pressure washing, the angle of rotatable high pressure water spray gun carries out flushing in all directions; Carry out annealing in process, temperature 200-300 degree Celsius after 4th step, flushing, then gear is demagnetized; 5th step, uses running water to carry out rinsing, then uses air inducing equipment to dry up, dries up rear effects on surface and carry out electrodeposited chromium; Plating afterwash is dried.
2. Gear Processing treatment process as claimed in claim 1, it is characterized in that, described heat treatment comprises three carburizings and triple diffusion, and concrete steps are as follows:
First time oozes by force, and furnace temperature maintains 960-968 DEG C, is incubated as 160-180min, in meshbeltfurnace, carbon potential is in 1.54-1.57%CP, first time diffusion, and furnace temperature maintains 950-958 DEG C, insulation 110-135min, in meshbeltfurnace, carbon potential is 1.20-1.23%CP; Second time is oozed by force, and furnace temperature maintains 950-958 DEG C, insulation 80-85min, and in meshbeltfurnace, carbon potential is 1.28-1.35%CP, second time diffusion, and furnace temperature maintains 940-948 DEG C, insulation 80-95min, and in meshbeltfurnace, carbon potential is 0.95-1.2%CP; Third time oozes by force, and furnace temperature maintains 938-943 DEG C, insulation 45-50min, and in meshbeltfurnace, carbon potential is 1.17-1.33% CP, third time diffusion, and furnace temperature maintains 925-940 DEG C, and insulation 45-60min, in meshbeltfurnace, carbon potential is 0.95-0.98%CP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510462171.0A CN104999240A (en) | 2015-07-31 | 2015-07-31 | Gear machining and treating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510462171.0A CN104999240A (en) | 2015-07-31 | 2015-07-31 | Gear machining and treating process |
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| CN104999240A true CN104999240A (en) | 2015-10-28 |
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| CN201510462171.0A Pending CN104999240A (en) | 2015-07-31 | 2015-07-31 | Gear machining and treating process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105442009A (en) * | 2015-11-30 | 2016-03-30 | 中航飞机股份有限公司西安飞机分公司 | Method for repairing metal base defect and improving galvanized coating quality |
| CN106002114A (en) * | 2016-05-25 | 2016-10-12 | 镇江市经纬工程机械有限公司 | Gear machining method |
| CN106076932A (en) * | 2016-06-28 | 2016-11-09 | 常州步速者机械制造有限公司 | A kind of cleaning equipment and technique |
| CN107127404A (en) * | 2017-06-09 | 2017-09-05 | 合肥工业大学 | A kind of method for improving internal honing wheel strength gear honing machining accuracy |
| CN107175476A (en) * | 2017-07-03 | 2017-09-19 | 泰州市东方传动技术有限公司 | A kind of automobile synchronizer exports flange machining process |
| CN108388695A (en) * | 2018-01-26 | 2018-08-10 | 昌宇应力技术（上海）有限公司 | According to the method for tooth root residual stress distribution quantitative estimation gear local fatigue intensity |
| CN109382632A (en) * | 2018-08-10 | 2019-02-26 | 镇江市华谊机械有限公司 | A kind of processing method of the crossbeam for wind power plant |
| CN111299983A (en) * | 2020-03-18 | 2020-06-19 | 中国船舶重工集团公司第七0七研究所 | Method for processing duplex gear for high-precision planetary cycloidal pin gear speed reducer |
| CN112276501A (en) * | 2020-10-23 | 2021-01-29 | 河南蒲瑞精密机械有限公司 | Machining process of gear with hard tooth surface |
| CN113478022A (en) * | 2021-08-02 | 2021-10-08 | 陕西力拓重工机械有限公司 | Gear machining process and machining equipment |
-
2015
- 2015-07-31 CN CN201510462171.0A patent/CN104999240A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105442009A (en) * | 2015-11-30 | 2016-03-30 | 中航飞机股份有限公司西安飞机分公司 | Method for repairing metal base defect and improving galvanized coating quality |
| CN106002114A (en) * | 2016-05-25 | 2016-10-12 | 镇江市经纬工程机械有限公司 | Gear machining method |
| CN106076932A (en) * | 2016-06-28 | 2016-11-09 | 常州步速者机械制造有限公司 | A kind of cleaning equipment and technique |
| CN106076932B (en) * | 2016-06-28 | 2018-09-21 | 常州步速者机械制造有限公司 | A kind of cleaning equipment and technique |
| CN107127404A (en) * | 2017-06-09 | 2017-09-05 | 合肥工业大学 | A kind of method for improving internal honing wheel strength gear honing machining accuracy |
| CN107127404B (en) * | 2017-06-09 | 2018-06-29 | 合肥工业大学 | A kind of method for improving internal honing wheel strength gear honing machining accuracy |
| CN107175476A (en) * | 2017-07-03 | 2017-09-19 | 泰州市东方传动技术有限公司 | A kind of automobile synchronizer exports flange machining process |
| CN108388695A (en) * | 2018-01-26 | 2018-08-10 | 昌宇应力技术（上海）有限公司 | According to the method for tooth root residual stress distribution quantitative estimation gear local fatigue intensity |
| CN109382632A (en) * | 2018-08-10 | 2019-02-26 | 镇江市华谊机械有限公司 | A kind of processing method of the crossbeam for wind power plant |
| CN111299983A (en) * | 2020-03-18 | 2020-06-19 | 中国船舶重工集团公司第七0七研究所 | Method for processing duplex gear for high-precision planetary cycloidal pin gear speed reducer |
| CN112276501A (en) * | 2020-10-23 | 2021-01-29 | 河南蒲瑞精密机械有限公司 | Machining process of gear with hard tooth surface |
| CN113478022A (en) * | 2021-08-02 | 2021-10-08 | 陕西力拓重工机械有限公司 | Gear machining process and machining equipment |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151028 |
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| WD01 | Invention patent application deemed withdrawn after publication |