CN109593922A - Fine module gear monodentate induction hardening process - Google Patents
Fine module gear monodentate induction hardening process Download PDFInfo
- Publication number
- CN109593922A CN109593922A CN201910036294.6A CN201910036294A CN109593922A CN 109593922 A CN109593922 A CN 109593922A CN 201910036294 A CN201910036294 A CN 201910036294A CN 109593922 A CN109593922 A CN 109593922A
- Authority
- CN
- China
- Prior art keywords
- inductor
- hardening process
- induction hardening
- quenching
- fine module
- 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
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Classifications
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of fine module gear monodentate induction hardening process, belong to heat treatment process field.It includes the following steps: step 1: stationary induction apparatus, and to the depth of parallelism and verticality of inductor be adjusted and inductor in each flow channel for liquids clear up；Step 2: coolant liquid inlet tube and outlet tube and quenching liquid liquid supply pipe on connection inductor；Step 3: after gear workpieces carry out removing surface, tooth position being adjusted；Step 4: starting quenching program；Step 5: cooling, tempering.The technical program is gradually quenched between cog by being protruded between adjacent teeth by inductor, and can effectively be quenched to tooth root, reinforces gear surface overall structural strength effectively.
Description
Technical field
The invention belongs to technical field of heat treatment, are a kind of fine module gear monodentate induction hardening process specifically.
Background technique
Since heating speed is fast, the time is short when gear high-frequency induction hardening, structural transformation only occurs on surface, so distortion
Measure typically small, base tangent length variation is in diminution trend, hole size generally shrinks less.High-frequency heating speed is fast, is heated
Position expands always compressed stress, and compression distortion can be generated when being heated to a certain mecystasis.Subsequent cooled
Cheng Zhong, base tangent length are shunk, and generate compression to unheated inner hole, so that inner hole and outer diameter be made to shrink.Shrinkage and wall
Thick related, the shrinkage usually at wall thickness is greater than shrinkage at thin-walled.This is because thermal stress plays leading make when wall thickness is larger
With surface is compression；When wall thickness reduces, then structural stress gradually plays a leading role, and surface is shunk to tensile stress state transition
Amount reduces；, may be substantially diathermanous when wall thickness is small arrives certain value, then become swelling.
Then the pinion gear less for modulus is sprayed water generally using more than induction heating to phase transition temperature of full tooth
It is cooling.Although such case is only teeth portion heating, heating time is very short, and equally there is also structural stresses and heat to answer after hardening
The influence of power, not only teeth portion can generate distortion, but also inner hole is also affected, still, the above method can not to root portion into
Row quenching treatment.
Summary of the invention
Object of the present invention is to be intended to provide a kind of solution insufficient fine module gear monodentate impewdance matching work in the prior art
Skill.To realize the above-mentioned technical purpose, The technical solution adopted by the invention is as follows:
A kind of fine module gear monodentate induction hardening process, includes the following steps:
Step 1: stationary induction apparatus, and to the depth of parallelism and verticality of inductor be adjusted and inductor in each flow channel for liquids
It is cleared up；
Step 2: coolant liquid inlet tube and outlet tube and quenching liquid liquid supply pipe on connection inductor；
Step 3: after gear workpieces carry out removing surface, tooth position being adjusted；
Step 4: starting quenching program；
Step 5: cooling, tempering.
It further limits, inductor operating amperage 360A-460A, operating voltage intensity 220V-3200V, frequency
5300Hz-5500Hz, heating time 2.5s-4.5s, quenching liquid injecting time 1s-5s.
It further limits, residual temperature is greater than 70 DEG C after quenching.
It further limits, inductor and space width are 0.8-1.2mm.
It further limits, dye penetrant inspection detection is carried out to workpiece after cooling, by smearing colorant, is soaked by colorant
Crackle existing for workpiece is dyed thoroughly.
It further limits, is at the uniform velocity moved with inductor in parallel during workpiece quenching, movement speed 170-190mm/
min。
It further limits, 140-180 DEG C of natural cooling after 5-6h is kept the temperature of tempering temperature.
The present invention compared with prior art, is protruded between adjacent teeth by inductor and is gradually quenched between cog, and
Tooth root can effectively be quenched, reinforce gear surface overall structural strength effectively.
Detailed description of the invention
The present invention can be further illustrated by the nonlimiting examples that attached drawing provides；
Fig. 1 is the structural schematic diagram of inductor of the present invention；
Fig. 2 is the structural schematic diagram of the first tube body；
Fig. 3 is the structural schematic diagram of the second tube body；
Main element symbol description is as follows:
First tube body 1, the second tube body 2, silicon steel clamping plate 3, first partition 4, second partition 5, quenching jet pipe 6, inclined surface 7, pedestal
8。
Specific embodiment
In order to make those skilled in the art that the present invention may be better understood, with reference to the accompanying drawings and examples to this hair
Bright technical solution further illustrates.
A kind of fine module gear monodentate induction hardening process, includes the following steps:
Step 1: stationary induction apparatus, and to the depth of parallelism and verticality of inductor be adjusted and inductor in each flow channel for liquids
It is cleared up；
Step 2: coolant liquid inlet tube and outlet tube and quenching liquid liquid supply pipe on connection inductor；
Step 3: after gear workpieces carry out removing surface, tooth position being adjusted；
Step 4: starting quenching program；
Step 5: cooling, tempering.
Inductor operating amperage 360A-460A, operating voltage intensity 220V-3200V, frequency 5300Hz-5500Hz,
Heating time 2.5s-4.5s, quenching liquid injecting time 1s-5s.
Residual temperature is greater than 70 DEG C after quenching.
Inductor and space width are 0.8-1.2mm.
Dye penetrant inspection detection is carried out to workpiece after cooling, by smearing colorant, is impregnated with by colorant and workpiece is deposited
Crackle dyed.
It is at the uniform velocity moved with inductor in parallel during workpiece quenching, movement speed 170-190mm/min.
140-180 DEG C of natural cooling after 5-6h is kept the temperature of tempering temperature.
As shown in Figure 1, Figure 2, Figure 3 shows, the first tube body 1 and 2 upper end of the second tube body are used for by the connection conducting of silicon steel clamping plate 3
By frequency conversion current induced magnetic field, be placed between two gear teeth, by two adjacent teeth tooth shoulder and tooth root add
First tube body 1 is divided into two runners that top is connected to by heat, first partition 4, and coolant liquid passes through in the first tube body 1 and the second tube body
It is flowed through in two runners in 2 to the first tube body 1 and the cooling of the second tube body 2；Setting silicon steel clamping plate 3 can effectively improve local
Induced magnetic field intensity, and flash quenching liquid is carried out to corresponding tooth shoulder and tooth root by quenching 6 upper end of jet pipe, it is quenched
Processing；Protruded between adjacent tooth by the first tube body 1 and the second tube body 2, can tooth shoulder to adjacent teeth and tooth root add
Heat, and be quenched by quenching jet pipe 6, effectively tooth shoulder and tooth root can be handled, it is whole to improve gear surface
Structural strength.The silicon steel clamping plate 3 is multilayer single plate overlay structure, and multilayer single plate is overlapped, can be advised according to gear difference
Lattice are increased and decreased to adjust thickness, facilitate adjusting.First tube body 1 and 2 upper end two sides of the second tube body are equipped with inclined surface 7,
The tooth root that can be more bonded between adjacent teeth.Two runner lower ends difference in first tube body 1 and the second tube body 2
To different directions horizontal buckling, right angle is formed, it is more convenient to use convenient for fixed and installation.First tube body, 1 lower end and
Two tube bodies, 2 lower end is fixedly connected to pedestal 8, and setting pedestal 8 can be installed more firm when in use.
The technical program compared with prior art, is protruded between adjacent teeth by inductor and is carried out at gradually quenching between cog
Reason, and tooth root can effectively be quenched, reinforce gear surface overall structural strength effectively.
Fine module gear monodentate induction hardening process provided by the invention is described in detail above.Specific embodiment
Explanation be merely used to help understand method and its core concept of the invention.It should be pointed out that for the common of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for technical staff, these
Improvement and modification are also fallen within the protection scope of the claims of the present invention.
Claims (7)
1. a kind of fine module gear monodentate induction hardening process, characterized by the following steps:
Step 1: stationary induction apparatus, and to the depth of parallelism and verticality of inductor be adjusted and inductor in each flow channel for liquids
It is cleared up；
Step 2: coolant liquid inlet tube and outlet tube and quenching liquid liquid supply pipe on connection inductor；
Step 3: after gear workpieces carry out removing surface, tooth position being adjusted；
Step 4: starting quenching program；
Step 5: cooling, tempering.
2. fine module gear monodentate induction hardening process according to claim 1, it is characterised in that: inductor operating current
Intensity 360A-460A, operating voltage intensity 220V-3200V, frequency 5300Hz-5500Hz, heating time 2.5s-4.5s, quenching
Liquid injecting time 1s-5s.
3. fine module gear monodentate induction hardening process according to claim 2, it is characterised in that: residual temperature is greater than after quenching
70℃。
4. fine module gear monodentate induction hardening process according to claim 3, it is characterised in that: inductor and space width
For 0.8-1.2mm.
5. fine module gear monodentate induction hardening process according to claim 4, it is characterised in that: to workpiece after cooling
Dye penetrant inspection detection is carried out, by smearing colorant, is impregnated with by colorant and crackle existing for workpiece is dyed.
6. fine module gear monodentate induction hardening process according to claim 5, it is characterised in that: during workpiece quenching
It is at the uniform velocity moved with inductor in parallel, movement speed 170-190mm/min.
7. fine module gear monodentate induction hardening process according to claim 6, it is characterised in that: tempering temperature 140-
180 DEG C of natural coolings after 5-6h is kept the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036294.6A CN109593922A (en) | 2019-01-15 | 2019-01-15 | Fine module gear monodentate induction hardening process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036294.6A CN109593922A (en) | 2019-01-15 | 2019-01-15 | Fine module gear monodentate induction hardening process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109593922A true CN109593922A (en) | 2019-04-09 |
Family
ID=65965172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910036294.6A Pending CN109593922A (en) | 2019-01-15 | 2019-01-15 | Fine module gear monodentate induction hardening process |
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| Country | Link |
|---|---|
| CN (1) | CN109593922A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112853076A (en) * | 2020-12-29 | 2021-05-28 | 郑州机械研究所有限公司 | Single-tooth induction quenching process for spiral bevel gear |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509063A (en) * | 2008-12-24 | 2009-08-19 | 中信重工机械股份有限公司 | Process for quenching hard-tooth surface canine tooth loop intermediate-frequency edge roller seating space |
| CN103710516A (en) * | 2013-12-31 | 2014-04-09 | 苏州亚太金属有限公司 | Large-diameter small-modulus gear quenching process |
| CN105755267A (en) * | 2014-12-13 | 2016-07-13 | 青岛勤德索具有限公司 | Heat treatment process for gear |
-
2019
- 2019-01-15 CN CN201910036294.6A patent/CN109593922A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509063A (en) * | 2008-12-24 | 2009-08-19 | 中信重工机械股份有限公司 | Process for quenching hard-tooth surface canine tooth loop intermediate-frequency edge roller seating space |
| CN103710516A (en) * | 2013-12-31 | 2014-04-09 | 苏州亚太金属有限公司 | Large-diameter small-modulus gear quenching process |
| CN105755267A (en) * | 2014-12-13 | 2016-07-13 | 青岛勤德索具有限公司 | Heat treatment process for gear |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112853076A (en) * | 2020-12-29 | 2021-05-28 | 郑州机械研究所有限公司 | Single-tooth induction quenching process for spiral bevel gear |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190409 |
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| RJ01 | Rejection of invention patent application after publication |