CN107217131A - A kind of processing technology of camshaft - Google Patents

A kind of processing technology of camshaft Download PDF

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Publication number
CN107217131A
CN107217131A CN201710355770.1A CN201710355770A CN107217131A CN 107217131 A CN107217131 A CN 107217131A CN 201710355770 A CN201710355770 A CN 201710355770A CN 107217131 A CN107217131 A CN 107217131A
Authority
CN
China
Prior art keywords
carburizing
camshaft
normalizing
processing technology
constant
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.)
Pending
Application number
CN201710355770.1A
Other languages
Chinese (zh)
Inventor
吴光武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Hengtong Zhaoye Precision Machinery Co Ltd
Original Assignee
Chengdu Hengtong Zhaoye Precision Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chengdu Hengtong Zhaoye Precision Machinery Co Ltd filed Critical Chengdu Hengtong Zhaoye Precision Machinery Co Ltd
Priority to CN201710355770.1A priority Critical patent/CN107217131A/en
Publication of CN107217131A publication Critical patent/CN107217131A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/14Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • C21D1/28Normalising
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/30Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C8/00Solid 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

Abstract

The invention discloses a kind of processing technology of camshaft, including rough forging, carburizing, normalizing, corase grind, hole milling, fine grinding, the carburizing is the 36h of carburizing 24 at 900 1000 DEG C, it is constant-speed heating to after 1,100 1200 DEG C directly to carry out normalizing, at the uniform velocity it is cooled to 650 DEG C, 30 50min are incubated again, carry out the processing of subsequent step.Carburizing and normalizing are carried out ingenious cooperation, the problem of improving the intensity and underbraced of camshaft by the present invention.

Description

A kind of processing technology of camshaft
Technical field
The present invention relates to automobile manufacture field, and in particular to a kind of processing technology of camshaft.
Background technology
Camshaft is a part in piston engine.Its effect is unlatching and the closed action for controlling valve.Though So the rotating speed of camshaft is the half of bent axle (in the rotating speed and bent axle of two stroke engine convexity wheel shaft four-stroke engine It is identical), but generally its rotating speed is still very high, and need to bear in very big moment of torsion, therefore design to camshaft strong Requirement in terms of degree and support is very high, and its material is usually superior alloy steel or steel alloy.Because valve motion rule is related to The power and service performance of one engine, thus camshaft in the design process of engine in occupation of highly important Position.
Camshaft is improper due to processing technology in the fabrication process, and asking for intensity and underbraced occurs in application Topic.
The content of the invention
It is an object of the invention to provide a kind of processing technology of camshaft, carburizing and normalizing are subjected to ingenious cooperation, changed The problem of being apt to the intensity and underbraced of camshaft.
The present invention is achieved through the following technical solutions:
A kind of processing technology of camshaft, including rough forging, carburizing, normalizing, corase grind, hole milling, fine grinding, the carburizing is The carburizing 24-36h at 900-1000 DEG C, it is constant-speed heating to after 1100-1200 DEG C directly to carry out normalizing, is at the uniform velocity cooled to 650 DEG C, then 30-50min is incubated, carry out the processing of subsequent step.
Constant-speed heating speed is 3-6 DEG C/min in normalizing.
The case carbon that blank is controlled after carburizing is 1.0-1.25%.
At the uniform velocity cooling rate is 5-10 DEG C/min.
Carburizing time is 32h.
Inventive conception is that:Carburizing and normalizing are subjected to ingenious cooperation, and then improve intensity and the support of camshaft Not enough the problem of, carburizing and normalizing can be lifted to the intensity of camshaft, and the fine next time of camshaft is repaired, whole Body combines the intensity and support performance for improving camshaft.Be conducive to the intensity of camshaft to the control of carburized surface phosphorus content Lifting.
The present invention compared with prior art, has the following advantages and advantages:
Carburizing and normalizing are carried out ingenious cooperation, the problem of improving the intensity and underbraced of camshaft by the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment, to present invention work Further to describe in detail, exemplary embodiment and its explanation of the invention is only used for explaining the present invention, is not intended as to this The restriction of invention.
Embodiment 1
A kind of processing technology of camshaft, including rough forging, carburizing, normalizing, corase grind, hole milling, fine grinding, the carburizing is The carburizing 24h at 900 DEG C, it is constant-speed heating to after 1200 DEG C directly to carry out normalizing, is at the uniform velocity cooled to 650 DEG C, then be incubated 30min, carries out the processing of subsequent step.
Constant-speed heating speed is 3 DEG C/min in normalizing.
The case carbon that blank is controlled after carburizing is 1.0-1.25%.
At the uniform velocity cooling rate is 5 DEG C/min.
Embodiment 2
A kind of processing technology of camshaft, including rough forging, carburizing, normalizing, corase grind, hole milling, fine grinding, the carburizing is The carburizing 32h at 950 DEG C, it is constant-speed heating to after 1100 DEG C directly to carry out normalizing, is at the uniform velocity cooled to 650 DEG C, then be incubated 50min, carries out the processing of subsequent step.
Constant-speed heating speed is 5 DEG C/min in normalizing.
The case carbon that blank is controlled after carburizing is 1.0-1.25%.
At the uniform velocity cooling rate is 7 DEG C/min.
Embodiment 3
A kind of processing technology of camshaft, including rough forging, carburizing, normalizing, corase grind, hole milling, fine grinding, the carburizing is The carburizing 36h at 71000 DEG C, it is constant-speed heating to after 1100 DEG C directly to carry out normalizing, is at the uniform velocity cooled to 650 DEG C, then protect Warm 35min, carries out the processing of subsequent step.
Constant-speed heating speed is 6 DEG C/min in normalizing.
The case carbon that blank is controlled after carburizing is 1.0-1.25%.
At the uniform velocity cooling rate is 10 DEG C/min.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included Within protection scope of the present invention.

Claims (5)

1. a kind of processing technology of camshaft, it is characterised in that including rough forging, carburizing, normalizing, corase grind, hole milling, fine grinding, The carburizing is the carburizing 24-36h at 900-1000 DEG C, and it is constant-speed heating to after 1100-1200 DEG C directly to carry out normalizing, is carried out 650 DEG C are at the uniform velocity cooled to, then is incubated 30-50min, the processing of subsequent step is carried out.
2. the processing technology of camshaft according to claim 1, it is characterised in that constant-speed heating speed is 3-6 in normalizing ℃/min。
3. the processing technology of camshaft according to claim 1, it is characterised in that control the surface of blank carbon containing after carburizing Measure as 1.0-1.25%.
4. the processing technology of camshaft according to claim 1, it is characterised in that at the uniform velocity cooling rate be 5-10 DEG C/ min。
5. the processing technology of camshaft according to claim 1, it is characterised in that carburizing time is 32h.
CN201710355770.1A 2017-05-19 2017-05-19 A kind of processing technology of camshaft Pending CN107217131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710355770.1A CN107217131A (en) 2017-05-19 2017-05-19 A kind of processing technology of camshaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710355770.1A CN107217131A (en) 2017-05-19 2017-05-19 A kind of processing technology of camshaft

Publications (1)

Publication Number Publication Date
CN107217131A true CN107217131A (en) 2017-09-29

Family

ID=59944315

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710355770.1A Pending CN107217131A (en) 2017-05-19 2017-05-19 A kind of processing technology of camshaft

Country Status (1)

Country Link
CN (1) CN107217131A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150259771A1 (en) * 2013-11-15 2015-09-17 Gregory Vartanov High Strength Low Alloy Steel and Method of Manufacturing
CN105238911A (en) * 2015-11-16 2016-01-13 南车戚墅堰机车车辆工艺研究所有限公司 Steel grain refining heat treatment method for heavy-load locomotive gear
CN105648448A (en) * 2014-12-05 2016-06-08 青岛泰威机床有限公司 Bevel gear heat-treatment technology
CN105695685A (en) * 2014-11-28 2016-06-22 重庆伊曼环保设备有限公司 Isothermal normalizing process for alloy carburizing steel gear forging stock
CN106399818A (en) * 2016-06-03 2017-02-15 江苏保捷锻压有限公司 Liquid-state die forging process for cam shaft gear for automobile engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150259771A1 (en) * 2013-11-15 2015-09-17 Gregory Vartanov High Strength Low Alloy Steel and Method of Manufacturing
CN105695685A (en) * 2014-11-28 2016-06-22 重庆伊曼环保设备有限公司 Isothermal normalizing process for alloy carburizing steel gear forging stock
CN105648448A (en) * 2014-12-05 2016-06-08 青岛泰威机床有限公司 Bevel gear heat-treatment technology
CN105238911A (en) * 2015-11-16 2016-01-13 南车戚墅堰机车车辆工艺研究所有限公司 Steel grain refining heat treatment method for heavy-load locomotive gear
CN106399818A (en) * 2016-06-03 2017-02-15 江苏保捷锻压有限公司 Liquid-state die forging process for cam shaft gear for automobile engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
唐远志: "《机械与汽车工程认知实践》", 31 August 2013, 合肥工业大学出版社 *

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Application publication date: 20170929

RJ01 Rejection of invention patent application after publication