CN105945537A - Forging technology for idle gear for automobile engine - Google Patents
Forging technology for idle gear for automobile engine Download PDFInfo
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- CN105945537A CN105945537A CN201610389187.8A CN201610389187A CN105945537A CN 105945537 A CN105945537 A CN 105945537A CN 201610389187 A CN201610389187 A CN 201610389187A CN 105945537 A CN105945537 A CN 105945537A
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Gears, Cams (AREA)
Abstract
The invention provides a forging technology for an idle gear for an automobile engine. The forging technology comprises the first step of blank manufacturing, the second step of normalizing, the third step of turning, the fourth step of carbonizing and quenching, the fifth step of tempering, the sixth step of grinding and the seventh step of phosphorous saponification treatment, cleaning, polishing and rust-preventing oil coating. The forging technology is reasonable in step design, and the obtained idle gear is high in hardness, good in abrasion resistance and high in corrosion resistance, the forging cost is low, and the forging technology is friendly to the environment.
Description
Technical field
The present invention relates to a kind of automobile engine idle gear Forging Technology.
Background technology
Automobile engine is to provide the electromotor of power for automobile, is the heart of automobile, affects automobile
Dynamic property, economy and the feature of environmental protection.Different according to power resources, automobile engine can be divided into bavin
Oil turbine, petrol engine, electric automobile motor and hybrid power etc..
Idle gear is the one in automobile engine assembly in numerous gears, also known as sloth wheel gear, is
The gear of transmission effect is played, simultaneously with the two gear in the middle of the travelling gear that two do not contact with each other
Engagement, is used for changing the rotation direction of driven gear, is allowed to identical with driving gear.Its effect
Simply change turns to and can not change gear ratio, referred to as sloth wheel gear.
Gear Production uses Forging Technology mostly, and forging is that one utilizes metal forming machinery to metal stock
Apply pressure so that it is produce plastic deformation, to obtain, there is certain mechanical performance, definite shape and chi
The processing method of very little forging, one of two big ingredients of forging and stamping (forging and punching press).By forging
Make and can eliminate the defects such as cast condition that metal produces in smelting process is loose, optimize heterogeneous microstructure,
Simultaneously because save complete metal streamline, the mechanical performance of forging generally to be preferred over same material
Foundry goods.The strength member that in associated mechanical, load is high, working condition is severe, except shape is better simply
Outside sheet material, section bar or the weldment of available rolling, use forging more.
Wherein, forging materials are mainly carbon steel and the steel alloy of various composition, next to that aluminum, magnesium,
Copper, titanium etc. and alloy thereof.The initial condition of material has bar, ingot casting, metal dust and liquid gold
Belong to.The ratio of area of section after metal area of section before being deformed and deformation is referred to as forging ratio.Just
Really select forging ratio, rational heating-up temperature and temperature retention time, rational initial forging temperature and finish-forging
Temperature, rational deflection and deformation velocity have much relations to raising product quality, reduction cost.
For the forging of automobile engine gear, the most domestic it is primarily present such as Publication about Document:
Patent publication No.: CN102218500A, discloses a kind of automobile gearbox reverse idler gear essence
Forging forming process method, cuts into satisfactory material section by raw material rod iron；Will material section spraying profit
Lubrication prescription is also dried；By blank heating to 700-750 DEG C, on warm forging forcing press, warm forging becomes with leading
Enter the pre-forging stock of angle and profile of tooth；To pre-forging stock isothermal normalizing process, sandblasting, surface lubricating polymer
Process；By pre-forging stock cold extrusion profile of tooth on a hydraulic press；Put in tooth form final finishing mould, cold-finishing
Import angle；Put in tooth profile back taper die, cold-finishing reversed cone angle.The method of the present invention, band protective atmosphere
The method of heating warm forging forges prefabricated blank, and higher than the profile accuracy of forge hot, surface roughness is good；?
Rear process decomposition becomes cold extrusion profile of tooth, cold-finishing to import angle, cold-finishing reversed cone angle three process, has
It is beneficial to step up profile accuracy, reduces " hereditary " effect that pre-forging stock profile accuracy is brought；Ratio
Machining efficiency is high, and material-saving is energy-conservation, saves time.But, the forging method that this patent is provided,
It is mainly used in automobile gearbox, and for the idle pulley that reverses gear, its structure and electromotor of the present invention are with lazy
There is significant difference in gear, applicable Forging Technology is also had any different.
Summary of the invention
For solving the problem of above-mentioned existence, it is an object of the invention to provide a kind of automobile engine and use
Idle gear Forging Technology, described Forging Technology step is reasonable in design, and gained idle gear hardness is high, resistance to
Mill property is good, and rotproofness is high, forges and presses low cost, and Forging Technology is environmentally friendly.
For reaching above-mentioned purpose, the technical scheme is that
A kind of automobile engine idle gear Forging Technology, comprises the steps:
1) base
The pinion steel being used for manufacturing idle gear is put in hotdie forging press and forges, forging pressure
Power is 800～1000MPa, and forging ratio is 2～3, initial forging temperature 1100～1200 DEG C, final forging temperature
950～1050 DEG C, obtaining described idle gear blank, between blank height and blank diameter, ratio is
1.5～2.5；
2) normalizing
Described blank is placed in normalizing furnace, with the ramp of 1.5～2 DEG C/min to 680～700 DEG C,
Again with the ramp of 1.0～1.5 DEG C/min to 960～1050 DEG C, it is incubated and comes out of the stove for 2～2.5 hours, empty
It is cooled to room temperature, rate of cooling 10～15 DEG C/min；
3) turnery processing
Use numerically controlled lathe that the blank after normalized treatment is carried out turnery processing, carry out trimming, punching,
Synchronously completing the processing of blank aperture, end face and cylindrical, aperture, end face and cylindrical are reserved respectively
The allowance of 1～2mm, integral surface roughness is Ra5～6 μm；
4) carburizing, quenching
Blank after turnery processing is placed in heating furnace, with 15～20 DEG C/min's in carburizer
Ramp carries out carburizing to 900～950 DEG C, and carburizing time 2～4 hours, by the gear after carburizing
Being cooled to 810～850 DEG C, samming 1～1.5 hours, then at 80～100 DEG C of oil quenchings that quench；
5) tempering
Blank after quenching is sent into tempering furnace carries out temper, temperature 500～550 DEG C,
After insulation 2～4h, it is cooled to room temperature with the speed of 10 DEG C/min；
6) grinding
Aperture, end face and the cylindrical of the blank after temper is carried out grinding, and grinding is removed
Excircle machining surplus to surface roughness is Ra0.6～0.8 μm, and grinding removes aperture allowance extremely
Surface roughness is Ra0.6～0.8 μm, and grinding is removed end face allowance and to surface roughness is
Ra0.6～0.8 μm；
7) phospholeumization processes, clears up, polishes, is coated with antirust oil
Blank after grinding being processed carries out phospholeum process, and surface scale is removed in cleaning,
Feeding gear burnishing machine polishes, and coats antirust oil, is dried, obtains described automobile engine idle gear.
Further, its chemical composition mass percent of described idle gear pinion steel is: C:
0.16～0.21%, Si:0.10～0.12%, Mn:0.80～1.15%, Cr:1.20～1.21%, P:
0.015～0.018%, Al:0.05～0.07%, Ni:0.01～0.25%, Mo:0.15～0.35%,
W:0.08～0.15%, Nb:0.08～0.15%, N:0.001～0.002%, O:0.001～0.0015%,
Surplus is Fe and inevitable impurity.
Separately, described idle gear pinion steel production method comprises the steps:
1) smelt, cast
Electric furnace is used to carry out smelting, casting by following chemical composition: C:0.16～0.21%, Si:
0.10～0.12%, Mn:0.80～1.15%, Cr:1.20～1.21%, P:0.015～0.018%,
Al:0.05～0.07%, Ni:0.01～0.25%, Mo:0.15～0.35%, W:0.08～0.15%,
Nb:0.08～0.15%, N:0.001～0.002%, O:0.001～0.0015%, surplus be Fe and
Inevitably impurity；Carry out smelting and being cast into strand by mentioned component；
2) strand heating
Gained strand is delivered to heating furnace heating, strand time inside furnace 1.2～1.5min/mm, strand
Tapping temperature 1230～1265 DEG C；
3) roll, cool down
Roll after gained strand is incubated, finishing temperature 1000～1050 DEG C, treat after rolling temperature to 830～
860 DEG C, then water-cooled is to room temperature, pickling, obtains described idle gear pinion steel.
Separately have, step 1) used by hotdie forging press be 1600T hotdie forging press or 4000T heat
Drop press.
Again, step 1) described in forging use closed type hot die forging.
Further, step 4) used by carburizer be kerosene.
And, step 4) in described carburization step, carburizing is divided into initial period, oozes stage and diffusion by force
In the stage, the carbon potential CP of initial period is 0.8～0.9C%, oozes by force the carbon potential CP in stage and is
0.9～1.02C%；The carbon potential 0.75～0.5C% of diffusion phase, the time of initial period is 0.5～0.8
Hour, ooze by force the time 1.2～2.5 hours in stage, the time of diffusion phase is 0.3～0.7 hour.
Separately, the described phospholeumization process time is 1～2 hour.
The beneficial effects of the present invention is:
Described Forging Technology combines automobile engine idle gear structure specialized designs, it is not necessary to shaving
Etc. operation, processing step is reasonable in design, with strong points, and described idle gear uses the forging of special pinion steel
Pressure forms, and tooth surface hardness is 60～65HRC；The Available Hardened Depth HV550；Core hardness
40～45HRC, adapt to the characteristic that automobile engine runs up, tensile strength is up to
900～1000MPa, yield strength is up to 800～900MPa, in relieving fatigue round-robin basis
N=5 × 107Time, idle gear bending fatigue limit σflimUp to 490～510MPa, by phospholeum
Processing, clear up, polish, be coated with antirust oil process, idle gear surface gloss is high, both artistic and practical,
And corrosion resistance is strong.
Accompanying drawing explanation
Fig. 1 is a kind of automobile engine idle gear lazy tooth of Forging Technology gained provided by the present invention
The structural representation of wheel.
Detailed description of the invention
Following example are used for illustrating the present invention, but can not be used for limiting the scope of the present invention.Implement
The implementation condition used in example can be for further adjustments according to the condition of producer, unaccounted enforcement
Condition is usually conventional laboratory conditions.
See Fig. 1, a kind of automobile engine idle gear Forging Technology gained provided by the present invention
Idle gear 100 be shaped as an annulus, set an annular groove 101 in the middle part of ring textures, annular is recessed
Groove 101 surface is circumferentially spaced offers 7 through holes 102.
In conjunction with Fig. 1, a kind of automobile engine idle gear Forging Technology provided by the present invention, bag
Include following steps:
1) base
The pinion steel being used for manufacturing idle gear is put in hotdie forging press and forges, forging pressure
Power is 800～1000MPa, and forging ratio is 2～3, initial forging temperature 1100～1200 DEG C, final forging temperature
950～1050 DEG C, obtaining described idle gear blank, between blank height and blank diameter, ratio is
1.5～2.5；
2) normalizing
Described blank is placed in normalizing furnace, with the ramp of 1.5～2 DEG C/min to 680～700 DEG C,
Again with the ramp of 1.0～1.5 DEG C/min to 960～1050 DEG C, it is incubated and comes out of the stove for 2～2.5 hours, empty
It is cooled to room temperature, rate of cooling 10～15 DEG C/min；
3) turnery processing
Use numerically controlled lathe that the blank after normalized treatment is carried out turnery processing, carry out trimming, punching,
Synchronously completing the processing of blank aperture, end face and cylindrical, aperture, end face and cylindrical are reserved respectively
The allowance of 1～2mm, integral surface roughness is Ra5～6 μm；
4) carburizing, quenching
Blank after turnery processing is placed in heating furnace, with 15～20 DEG C/min's in carburizer
Ramp carries out carburizing to 900～950 DEG C, and carburizing time 2～4 hours, by the gear after carburizing
Being cooled to 810～850 DEG C, samming 1～1.5 hours, then at 80～100 DEG C of oil quenchings that quench；
5) tempering
Blank after quenching is sent into tempering furnace carries out temper, temperature 500～550 DEG C,
After insulation 2～4h, it is cooled to room temperature with the speed of 10 DEG C/min；
6) grinding
Aperture, end face and the cylindrical of the blank after temper is carried out grinding, and grinding is removed
Excircle machining surplus to surface roughness is Ra0.6～0.8 μm, and grinding removes aperture allowance extremely
Surface roughness is Ra0.6～0.8 μm, and grinding is removed end face allowance and to surface roughness is
Ra0.6～0.8 μm；
7) phospholeumization processes, clears up, polishes, is coated with antirust oil
Blank after grinding being processed carries out phospholeum process, and surface scale is removed in cleaning,
Feeding gear burnishing machine polishes, and coats antirust oil, is dried, obtains described automobile engine idle gear.
Further, its chemical composition mass percent of described idle gear pinion steel is: C:
0.16～0.21%, Si:0.10～0.12%, Mn:0.80～1.15%, Cr:1.20～1.21%, P:
0.015～0.018%, Al:0.05～0.07%, Ni:0.01～0.25%, Mo:0.15～0.35%,
W:0.08～0.15%, Nb:0.08～0.15%, N:0.001～0.002%, O:0.001～0.0015%,
Surplus is Fe and inevitable impurity.
Separately, described idle gear pinion steel production method comprises the steps:
1) smelt, cast
Electric furnace is used to carry out smelting, casting by following chemical composition: C:0.16～0.21%, Si:
0.10～0.12%, Mn:0.80～1.15%, Cr:1.20～1.21%, P:0.015～0.018%,
Al:0.05～0.07%, Ni:0.01～0.25%, Mo:0.15～0.35%, W:0.08～0.15%,
Nb:0.08～0.15%, N:0.001～0.002%, O:0.001～0.0015%, surplus be Fe and
Inevitably impurity；Carry out smelting and being cast into strand by mentioned component；
2) strand heating
Gained strand is delivered to heating furnace heating, strand time inside furnace 1.2～1.5min/mm, strand
Tapping temperature 1230～1265 DEG C；
3) roll, cool down
Roll after gained strand is incubated, finishing temperature 1000～1050 DEG C, treat after rolling temperature to 830～
860 DEG C, then water-cooled is to room temperature, pickling, obtains described idle gear pinion steel.
Separately have, step 1) used by hotdie forging press be 1600T hotdie forging press or 4000T heat
Drop press.
Again, step 1) described in forging use closed type hot die forging.
Further, step 4) used by carburizer be kerosene.
And, step 4) in described carburization step, carburizing is divided into initial period, oozes stage and diffusion by force
In the stage, the carbon potential CP of initial period is 0.8～0.9C%, oozes by force the carbon potential CP in stage and is
0.9～1.02C%；The carbon potential 0.75～0.5C% of diffusion phase, the time of initial period is 0.5～0.8
Hour, ooze by force the time 1.2～2.5 hours in stage, the time of diffusion phase is 0.3～0.7 hour.
Separately, the described phospholeumization process time is 1～2 hour.
Wherein, a kind of automobile engine idle gear that table 1 is provided by each embodiment of the present invention
The ingredient lists of pinion steel used in Forging Technology.Table 2 carried by each embodiment of the present invention one
Plant the automobile engine mechanical performance list of idle gear Forging Technology gained idle gear.
Table 1 (unit: wt%)
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| C | 0.18 | 0.16 | 0.20 | 0.21 | 0.17 |
| Si | 0.05 | 0.18 | 0.10 | 0.11 | 0.12 |
| Mn | 1.08 | 1.05 | 0.80 | 1.12 | 1.15 |
| Cr | 1.20 | 1.21 | 1.21 | 1.20 | 1.20 |
| P | 0.016 | 0.018 | 0.017 | 0.015 | 0.016 |
| Al | 0.06 | 0.05 | 0.07 | 0.07 | 0.05 |
| Ni | 0.08 | 0.05 | 0.01 | 0.20 | 0.25 |
| Mo | 0.20 | 0.18 | 0.35 | 0.15 | 0.33 |
| W | 0.10 | 0.15 | 0.12 | 0.08 | 0.13 |
| Nb | 0.12 | 0.09 | 0.15 | 0.08 | 0.10 |
| N | 0.001 | 0.002 | 0.002 | 0.0015 | 0.002 |
| O | 0.0012 | 0.001 | 0.0013 | 0.0015 | 0.0014 |
Table 2
A kind of automobile engine idle gear Forging Technology provided by the present invention, described Forging Technology
In conjunction with automobile engine idle gear structure specialized designs, it is not necessary to the operations such as shaving, processing step
Reasonable in design, with strong points, gained idle gear uses the forging and stamping of special pinion steel to form, and tooth surface is hard
Degree is HRC60～65HRC；The Available Hardened Depth HV550；Core hardness HRC40～45HRC,
Adapting to the characteristic that automobile engine runs up, tensile strength is up to 900～1000MPa, and surrender is strong
Degree up to 800～900MPa, in relieving fatigue round-robin basis N=5 × 107Time, idle gear bending is tired
Labor limit σflimUp to 490～510MPa, processed by phospholeumization, clear up, polish, be coated with antirust
Oil processing, idle gear surface gloss is high, both artistic and practical, and corrosion resistance is strong.
It should be noted that above example is only in order to illustrate technical scheme rather than limit
System.Although the present invention being described in detail with reference to preferred embodiment, the ordinary skill of this area
Personnel should be appreciated that and can modify the technical scheme of invention or equivalent, and do not take off
From the scope of technical solution of the present invention, it all should be contained in scope of the presently claimed invention.
Claims (8)
1. an automobile engine idle gear Forging Technology, it is characterised in that comprise the steps:
1) base
Being put in hotdie forging press by the pinion steel being used for manufacturing idle gear and forge, forging pressure is 800 ~ 1000MPa, and forging ratio is 2 ~ 3, initial forging temperature 1100 ~ 1200 DEG C, final forging temperature 950 ~ 1050 DEG C, obtains described idle gear blank, and between blank height and blank diameter, ratio is 1.5 ~ 2.5；
2) normalizing
Described blank is placed in normalizing furnace, with the ramp of 1.5 ~ 2 DEG C/min to 680 ~ 700 DEG C, then with the ramp of 1.0 ~ 1.5 DEG C/min to 960 ~ 1050 DEG C, is incubated and comes out of the stove for 2 ~ 2.5 hours, air cooling to room temperature, 10 ~ 15 DEG C/min of rate of cooling；
3) turnery processing
Using numerically controlled lathe that the blank after normalized treatment is carried out turnery processing, carry out trimming, punching, synchronously complete the processing of blank aperture, end face and cylindrical, aperture, end face and cylindrical reserve the allowance of 1 ~ 2mm respectively, and integral surface roughness is Ra5 ~ 6 μm；
4) carburizing, quenching
Blank after turnery processing is placed in heating furnace, in carburizer, the ramp with 15 ~ 20 DEG C/min carries out carburizing, carburizing time 2 ~ 4 hours to 900 ~ 950 DEG C, and the gear after carburizing is cooled to 810 ~ 850 DEG C, samming 1 ~ 1.5 hour, then at 80 ~ 100 DEG C of oil quenchings that quench；
5) tempering
Blank after quenching is sent into tempering furnace carries out temper, temperature 500 ~ 550 DEG C, after insulation 2 ~ 4h, it is cooled to room temperature with the speed of 10 DEG C/min；
6) grinding
Aperture, end face and the cylindrical of the blank after temper is carried out grinding, it is Ra0.6 ~ 0.8 μm that Excircle machining surplus to surface roughness is removed in grinding, it is Ra0.6 ~ 0.8 μm to surface roughness that aperture allowance is removed in grinding, and it is Ra0.6 ~ 0.8 μm that end face allowance to surface roughness is removed in grinding；
7) phospholeumization processes, clears up, polishes, is coated with antirust oil
Blank after grinding being processed carries out phospholeum process, and surface scale is removed in cleaning, sends into gear burnishing machine polishing, coats antirust oil, is dried, obtains described automobile engine idle gear.
A kind of automobile engine idle gear Forging Technology the most according to claim 1, it is characterized in that, its chemical composition mass percent of described idle gear pinion steel is: C:0.16 ~ 0.21%, Si:0.10 ~ 0.12%, Mn:0.80 ~ 1.15%, Cr:1.20 ~ 1.21%, P:0.015 ~ 0.018%, Al:0.05 ~ 0.07%, Ni:0.01 ~ 0.25%, Mo:0.15～0.35%, W:0.08 ~ 0.15%, Nb:0.08 ~ 0.15%, N:0.001 ~ 0.002%, O:0.001 ~ 0.0015%, surplus is Fe and inevitable impurity.
A kind of automobile engine idle gear Forging Technology the most according to claim 2, it is characterised in that described idle gear pinion steel production method comprises the steps:
Smelt, cast
Electric furnace is used to carry out smelting, casting by following chemical composition: C:0.16 ~ 0.21%, Si:0.10 ~ 0.12%, Mn:0.80 ~ 1.15%, Cr:1.20 ~ 1.21%, P:0.015 ~ 0.018%, Al:0.05 ~ 0.07%, Ni:0.01 ~ 0.25%, Mo:0.15 ~ 0.35%, W:0.08 ~ 0.15%, Nb:0.08 ~ 0.15%, N:0.001 ~ 0.002%, O:0.001 ~ 0.0015%, surplus is Fe and inevitable impurity；Carry out smelting and being cast into strand by mentioned component；
Strand heats
Gained strand is delivered to heating furnace heating, strand time inside furnace 1.2 ~ 1.5min/mm, strand tapping temperature 1230 ~ 1265 DEG C；
Rolling, cooling
Rolling after being incubated by gained strand, finishing temperature 1000～1050 DEG C, treat warm to 830～860 DEG C after rolling, then water-cooled is to room temperature, pickling, obtains described idle gear pinion steel.
A kind of automobile engine idle gear Forging Technology the most according to claim 1, it is characterised in that step 1) used by hotdie forging press be 1600T hotdie forging press or 4000T hotdie forging press.
A kind of automobile engine idle gear Forging Technology the most according to claim 1, it is characterised in that step 1) described in forging use closed type hot die forging.
A kind of automobile engine idle gear Forging Technology the most according to claim 1, it is characterised in that step 4) used by carburizer be kerosene.
A kind of automobile engine idle gear Forging Technology the most according to claim 1, it is characterized in that, step 4) in described carburization step, carburizing is divided into initial period, oozes stage and diffusion phase by force, the carbon potential CP of initial period is 0.8 ~ 0.9C%, and the carbon potential CP oozing by force the stage is 0.9 ~ 1.02C%；Carbon potential 0.75 ~ the 0.5C% of diffusion phase, the time of initial period is 0.5 ~ 0.8 hour, oozes by force 1.2 ~ 2.5 hours time in stage, and the time of diffusion phase is 0.3 ~ 0.7 hour.
A kind of automobile engine idle gear Forging Technology the most according to claim 1, it is characterised in that the described phospholeumization process time is 1 ~ 2 hour.
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| CN201610389187.8A CN105945537A (en) | 2016-06-03 | 2016-06-03 | Forging technology for idle gear for automobile engine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881440A (en) * | 2017-03-22 | 2017-06-23 | 杭州前进锻造有限公司 | A kind of high-accuracy high intensity is reversed gear idle pulley and its forging method |
| CN107470533A (en) * | 2017-08-24 | 2017-12-15 | 山东大为齿轮传动有限公司 | A kind of idle pulley processing method and processing assembling die |
| CN108161378A (en) * | 2018-01-18 | 2018-06-15 | 连云港东睦新材料有限公司 | A kind of production technology of transmission system high-precision VCT sprocket wheels |
| CN108672645A (en) * | 2018-05-04 | 2018-10-19 | 杭州前进锻造有限公司 | Band tooth idle pulley conjunction gear no-welding teeth portion one-step moulding method |
| CN110714168A (en) * | 2019-10-18 | 2020-01-21 | 重庆函木科技有限公司 | Door manufacturing method and forming equipment thereof |
| CN111015133A (en) * | 2019-12-31 | 2020-04-17 | 江苏悍狮霸智能科技有限公司 | Processing technology and equipment for pressing plate for fixing blade |
| CN111113556A (en) * | 2019-12-25 | 2020-05-08 | 奥士康科技股份有限公司 | Quick piercing press of plastic tubing |
| CN112008340A (en) * | 2020-08-25 | 2020-12-01 | 湖北中油科昊机械制造有限公司 | Method and device for processing valve seat |
| CN112077247A (en) * | 2020-08-13 | 2020-12-15 | 伊莱特能源装备股份有限公司 | Manufacturing method of high-performance 42CrMo gear |
| CN112355210A (en) * | 2020-10-22 | 2021-02-12 | 仪征常众汽车部件有限公司 | Forging method for automobile hub |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881440B (en) * | 2017-03-22 | 2018-12-18 | 杭州前进锻造有限公司 | A kind of high-accuracy high intensity is reversed gear idle pulley and its forging method |
| CN106881440A (en) * | 2017-03-22 | 2017-06-23 | 杭州前进锻造有限公司 | A kind of high-accuracy high intensity is reversed gear idle pulley and its forging method |
| CN107470533B (en) * | 2017-08-24 | 2023-10-27 | 山东中兴汽车零部件有限公司 | Idler machining method and machining combined die |
| CN107470533A (en) * | 2017-08-24 | 2017-12-15 | 山东大为齿轮传动有限公司 | A kind of idle pulley processing method and processing assembling die |
| CN108161378A (en) * | 2018-01-18 | 2018-06-15 | 连云港东睦新材料有限公司 | A kind of production technology of transmission system high-precision VCT sprocket wheels |
| CN108672645A (en) * | 2018-05-04 | 2018-10-19 | 杭州前进锻造有限公司 | Band tooth idle pulley conjunction gear no-welding teeth portion one-step moulding method |
| CN110714168A (en) * | 2019-10-18 | 2020-01-21 | 重庆函木科技有限公司 | Door manufacturing method and forming equipment thereof |
| CN111113556A (en) * | 2019-12-25 | 2020-05-08 | 奥士康科技股份有限公司 | Quick piercing press of plastic tubing |
| CN111015133A (en) * | 2019-12-31 | 2020-04-17 | 江苏悍狮霸智能科技有限公司 | Processing technology and equipment for pressing plate for fixing blade |
| CN111015133B (en) * | 2019-12-31 | 2021-08-03 | 江苏悍狮霸智能科技有限公司 | Processing technology and equipment for pressing plate for fixing blade |
| CN112077247A (en) * | 2020-08-13 | 2020-12-15 | 伊莱特能源装备股份有限公司 | Manufacturing method of high-performance 42CrMo gear |
| CN112008340A (en) * | 2020-08-25 | 2020-12-01 | 湖北中油科昊机械制造有限公司 | Method and device for processing valve seat |
| CN112355210A (en) * | 2020-10-22 | 2021-02-12 | 仪征常众汽车部件有限公司 | Forging method for automobile hub |
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Application publication date: 20160921 |