CN106555153A - A kind of blade mounting seat heat treatment method - Google Patents

A kind of blade mounting seat heat treatment method Download PDF

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Publication number
CN106555153A
CN106555153A CN201510631204.XA CN201510631204A CN106555153A CN 106555153 A CN106555153 A CN 106555153A CN 201510631204 A CN201510631204 A CN 201510631204A CN 106555153 A CN106555153 A CN 106555153A
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China
Prior art keywords
mounting seat
blade mounting
workpiece
incubated
carburizing
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CN201510631204.XA
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Chinese (zh)
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CN106555153B (en
Inventor
利淑琴
吉宜勇
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CHANGZHOU LANXIANG MACHINERY CO LTD
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CHANGZHOU LANXIANG MACHINERY CO LTD
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    • 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
    • C23C8/04Treatment of selected surface areas, e.g. using masks
    • 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
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • C21D1/19Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/22Martempering
    • 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
    • C23C8/06Solid 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
    • C23C8/08Solid 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
    • C23C8/20Carburising
    • C23C8/22Carburising of ferrous surfaces
    • 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/008Martensite

Abstract

The present invention relates to a kind of blade mounting seat heat treatment method, the copper plate on carburized zone surface is needed including all carrying out removing using machining after copper plating treatment to blade mounting seat surface of the work, then Carburization Treatment is carried out, can reach only carries out the purpose of carburizing in regional area.Protected using solid carburizer when Quench heating is carried out; carburizing layer surface is avoided oxidation and decarbonization occur; after Quenching Treatment; replace original salt bath heat-treatment furnace using moveable thermostatic oil bath; the convergence time of inter process can be reduced; contact during reduction workpiece high temperature with air, it is to avoid decarburization occurs in carburizing layer surface;Workpiece surface of the work spot temperature in quenching transfer process can be avoided simultaneously to be down to Ms points(180℃)Below;Workpiece after isothermal hardening inserts the Temperer vanning equipped with protection medium, can be incubated, it is to avoid surface of the work spot temperature drops to Ms points(180℃)Hereinafter, while conduction of heat can be accelerated in follow-up tempering, reduce energy loss.

Description

A kind of blade mounting seat heat treatment method
Technical field
The present invention relates to 18Cr2Ni4WA heat treatment of workpieces technical fields, a kind of particularly 18Cr2Ni4WA materials blade mounting seat heat treatment method.
Background technology
18Cr2Ni4WA has good processability and anti-fatigue performance, and with ideal quenching degree, obdurability and preferable carburizing controllability, it is the irreplaceable material of production heavy load driving member, there is extensive purposes in aircraft industry, the method that carburizing, Nitrizing Treatment are conventional raising surface of the work hardness during manufacture, is carried out to its surface.
Blade mounting seat case hardness used in aero-engine has particular/special requirement, as which uses characteristic requirements local carburzing, as shown in Figure 1, a kind of blade mounting seat, material is 18Cr2Ni4WA, in requirement figure, Q, R, H, G region carries out Carburization Treatment, case hardness is not less than 58HRC, for non-carburized zone, hardness requirement is not less than 33-37HRC, in the quenching process after Carburization Treatment is completed, surface oxidation decarburization easily occurs, infiltration layer forms the problem of tempered sorbite, and the case hardness in blade mounting seat carburizing face cannot meet requirement.
It is those skilled in the art's urgency technical issues that need to address that carburized layer not decarburization how is protected after the completion of carburizing is carried out to designated area and tempered sorbite is not formed.
The content of the invention
The technical problem to be solved is to provide a kind of easily operated, blade mounting seat heat treatment method for effectively realizing regional area anti-carburizi ng, protecting carburized layer not decarburization and do not form tempered sorbite.
A kind of blade mounting seat heat treatment method, including:
A. blade mounting seat surface of the work is all carried out into copper plating treatment.
B. the region to requiring carburizing is machined out, and removes the copper plate on carburized zone surface, realizes regional area carburizing.
C. the workpiece Jing after above-mentioned process is placed in the multipurpose furnace of sealing, is passed through gas carburzier, is heated to 890 DEG C~910 DEG C, is incubated 10~14 hours, and air cooling after coming out of the stove carries out Carburization Treatment to blade mounting seat, and the region that surface does not have copper plate obtains carburizing.
D. workpiece is taken out after the completion of carburizing, is tempered, 640 DEG C~660 DEG C of temperature is incubated 5~6 hours, and stove is come out of the stove after being cooled to less than 350 DEG C air cooling.
E. Quenching Treatment is carried out to blade mounting seat workpiece, temperature is 830 DEG C~850 DEG C, is incubated 105~135 minutes, is protected using solid carburizer vanning embedding in the process;After coming out of the stove, workpiece is inserted thermostatic oil bath carries out isothermal hardening rapidly, it is to avoid carburizing face temperature is down to below Ms points(180℃), form quenched martensite, while avoid workpiece and air contact excessive, cause workpiece carbonization emaciated face carbon, 220 DEG C~240 DEG C of temperature, 8~15 minutes time, after the completion of blade mounting seat is inserted into the Temperer vanning equipped with protection medium.
F. Temperer vanning is proceeded to chamber type annealing stove carries out first time temper to blade mounting seat workpiece, and temperature is 510 DEG C~570 DEG C, is incubated 1.5~2 hours, subsequently carries out ice-cold, -75 DEG C~-85 DEG C of temperature, is incubated 2~3 hours.
G. second temper is carried out to blade mounting seat workpiece, temperature is 150 DEG C~170 DEG C, is incubated 2.5~3.5 hours.
H. workpiece carbonization face and non-carburizing surface hardness are detected, detects the qualified rear copper plate for removing the non-carburized zone of blade mounting seat.
Further, mixed gas of the gas carburzier in step C for acetone, methanol and nitrogen, can be high with effective control carburizing quality, production efficiency.
Further, the protection medium in step E is sand, can be incubated, it is to avoid workpiece surface temperature in transfer process is down to surface portion Ms point(180℃)Below, it is to avoid carburizing face surface forms quenched martensite, while conduction of heat can be accelerated in follow-up tempering, reduce energy loss.
All carry out removing using machining to blade mounting seat surface of the work the copper plate for needing carburized zone surface after copper plating treatment, then carry out Carburization Treatment, can reach only carries out the purpose of carburizing in regional area.Protected using solid carburizer when Quench heating is carried out; carburizing layer surface is avoided oxidation and decarbonization occur; after Quenching Treatment; replace original salt bath heat-treatment furnace using moveable thermostatic oil bath; the convergence time of inter process can be reduced; contact during reduction workpiece high temperature with air, it is to avoid decarburization occurs in carburizing layer surface;Workpiece surface of the work spot temperature in quenching transfer process can be avoided simultaneously to be down to Ms points(180℃)Below, it is to avoid carburizing face surface forms quenched martensite, so as to form tempered sorbite in follow-up drawing process;Workpiece after isothermal hardening inserts the vanning of the Temperer equipped with sand, can be incubated, it is to avoid surface of the work spot temperature drops to Ms points(180℃)Hereinafter, while conduction of heat can be accelerated in follow-up tempering, reduce energy loss.By said method, carburized layer not decarburization and do not form tempered sorbite after the completion of effectively can realizing carburizing, carburizing being carried out to blade mounting seat designated area, it is easy to produce in batches, it is with low cost.
Description of the drawings
The present invention is described in further detail with reference to Figure of description:
Fig. 1 is the schematic diagram that blade mounting seat is required to carburizing face.
Specific embodiment
Embodiment 1
The blade mounting seat heat treatment method of the present embodiment, carries out machining to the blade mounting seat after modifier treatment, removes surface scale;Copper plating treatment is carried out to blade mounting seat surface of the work, it is ensured that surface of the work all covers plating Cu protective film;Blade mounting seat is machined out, the plating Cu protective film of Q, R, H, G region surface attachment is removed, is easy to follow-up carburizing.
Blade mounting seat workpiece is placed in the multipurpose furnace of sealing, acetone and each accounting of ethanol 50% is passed through(Volume ratio)Gas carburzier, 900 DEG C ± 10 DEG C of temperature, be incubated 12 hours, air cooling after coming out of the stove carries out Carburization Treatment to blade mounting seat, the workpiece for obtaining need carburized zone surface carburized (case) depth be 1.25~1.35mm;Carry out high tempering to blade mounting seat workpiece, 650 DEG C ± 10 DEG C of temperature is incubated 5 hours, stove is come out of the stove after being cooled to 350 DEG C air cooling, can eliminate inside workpiece transformation hardening.Quenching Treatment is carried out to blade mounting seat workpiece, temperature is 840 ± 10 DEG C, is incubated 75 minutes, protected using solid carburizer embedding vanning in the process;After coming out of the stove, workpiece is inserted thermostatic oil bath carries out isothermal hardening rapidly, it is to avoid workpiece is excessive with air contact, causes workpiece carbonization emaciated face carbon, while avoiding workpiece surface of the work spot temperature in quenching transfer process from being down to Ms points(180℃)Below so that surface formed quenched martensite, so as to avoid that tempered sorbite is formed in follow-up drawing process, 230 ± 10 DEG C of temperature, be incubated 12 minutes, after the completion of immediately by blade mounting seat insert equipped with sand Temperer vanning.Can be incubated, it is to avoid surface of the work spot temperature drops to Ms points(180℃)Hereinafter, while conduction of heat can be accelerated in follow-up tempering, reduce energy loss;Temperer vanning is proceeded to chamber type annealing stove carries out first time temper to blade mounting seat workpiece, and temperature is 540 ± 30 DEG C, is incubated 2 hours, subsequently carries out ice-cold, -75 DEG C~-85 DEG C of temperature, is incubated 3 hours.Second temper is carried out to blade mounting seat workpiece, temperature is 160 ± 10 DEG C, is incubated 3 hours, and the workpiece to obtaining is detected, the hardness of carburized zone reaches 60HRC, and the hardness of non-carburized zone is 35HRC, can meet the demand for using.
By all carrying out copper facing to blade mounting seat surface of the work before carburizing; protected using solid carburizer when Quench heating is carried out; carburizing layer surface is avoided oxidation and decarbonization occur; after Quenching Treatment; replace original salt bath heat-treatment furnace using moveable thermostatic oil bath; the convergence time of inter process, contact during reduction workpiece high temperature with air, it is to avoid decarburization occurs in carburizing layer surface can be reduced;Workpiece surface of the work spot temperature in quenching transfer process can be avoided simultaneously to be down to Ms points(180℃)Below so that surface forms quenched martensite, so as to form tempered sorbite in follow-up drawing process;Workpiece after isothermal hardening inserts the Temperer vanning equipped with protection medium, can be incubated, it is to avoid surface of the work spot temperature drops to Ms points(180℃)Hereinafter, while conduction of heat can be accelerated in follow-up tempering, reduce energy loss.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.There is no need to be exhaustive to all of embodiment.And these belong to the present invention spirit it is extended obvious change or variation still in protection scope of the present invention.

Claims (3)

1. a kind of blade mounting seat heat treatment method, it is characterised in that include:
A. blade mounting seat surface of the work is all carried out into copper plating treatment;
B. the region to requiring carburizing is machined out, and removes the copper plate on carburized zone surface;
C. the workpiece Jing after above-mentioned process is placed in the multipurpose furnace of sealing, is passed through gas carburzier, is heated to 890 DEG C~910 DEG C, is incubated 10~14 hours, and air cooling after coming out of the stove carries out Carburization Treatment to blade mounting seat, and the region that surface does not have copper plate obtains carburizing;
D. workpiece is taken out after the completion of carburizing, is tempered, 640 DEG C~660 DEG C of temperature is incubated 5~6 hours, and stove is come out of the stove after being cooled to less than 350 DEG C air cooling;
E. Quenching Treatment is carried out to blade mounting seat workpiece, temperature is 830 DEG C~850 DEG C, is incubated 105~135 minutes, in the process workpiece is protected using solid carburizer vanning embedding;It is rapid after coming out of the stove workpiece is inserted into thermostatic oil bath to carry out isothermal hardening, 220 DEG C~240 DEG C of temperature, 8~15 minutes time, after the completion of blade mounting seat is inserted into the Temperer vanning equipped with protection medium;
F. Temperer vanning is proceeded to chamber type annealing stove carries out first time temper to blade mounting seat workpiece, and temperature is 510 DEG C~570 DEG C, is incubated 1.5~2 hours, subsequently carries out ice-cold, -75 DEG C~-85 DEG C of temperature, is incubated 2~3 hours;
G. second temper is carried out to blade mounting seat workpiece, temperature is 150 DEG C~170 DEG C, is incubated 2.5~3.5 hours;
H. workpiece carbonization face and non-carburizing surface hardness are detected, detects the qualified rear copper plate for removing the non-carburized zone of blade mounting seat.
2. blade mounting seat heat treatment method according to claim 1, it is characterised in that mixed gas of the gas carburzier in step C for acetone, methanol and nitrogen.
3. blade mounting seat heat treatment method according to claim 1, it is characterised in that the protection medium in step E is sand.
CN201510631204.XA 2015-09-29 2015-09-29 A kind of blade mounting base heat treatment method Active CN106555153B (en)

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CN201810924700.8A CN109023221B (en) 2015-09-29 2015-09-29 The heat treatment method of aero-engine blade mounting base
CN201810924698.4A CN108913850B (en) 2015-09-29 2015-09-29 It is easy to the aero-engine blade mounting base produced in batches
CN201810925322.5A CN108950466B (en) 2015-09-29 2015-09-29 The aero-engine blade mounting base of tempered sorbite is not will form
CN201510631204.XA CN106555153B (en) 2015-09-29 2015-09-29 A kind of blade mounting base heat treatment method

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CN201810924700.8A Division CN109023221B (en) 2015-09-29 2015-09-29 The heat treatment method of aero-engine blade mounting base
CN201810925322.5A Division CN108950466B (en) 2015-09-29 2015-09-29 The aero-engine blade mounting base of tempered sorbite is not will form

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CN201810924698.4A Active CN108913850B (en) 2015-09-29 2015-09-29 It is easy to the aero-engine blade mounting base produced in batches
CN201810925322.5A Active CN108950466B (en) 2015-09-29 2015-09-29 The aero-engine blade mounting base of tempered sorbite is not will form
CN201510631204.XA Active CN106555153B (en) 2015-09-29 2015-09-29 A kind of blade mounting base heat treatment method

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CN201810924698.4A Active CN108913850B (en) 2015-09-29 2015-09-29 It is easy to the aero-engine blade mounting base produced in batches
CN201810925322.5A Active CN108950466B (en) 2015-09-29 2015-09-29 The aero-engine blade mounting base of tempered sorbite is not will form

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Cited By (2)

* Cited by examiner, † Cited by third party
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CN107904549A (en) * 2017-10-16 2018-04-13 武汉钢铁有限公司 A kind of processing method of 1300MPa grades of gradient performance thermoformed parts and application
CN110484857A (en) * 2019-09-28 2019-11-22 贵州航天精工制造有限公司 A kind of process improving eccentric bush performance

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CN109371205A (en) * 2018-12-26 2019-02-22 溧阳福思宝高速机械有限公司 A kind of three-dimensional flow impeller quenching processing technology
CN111218639A (en) * 2019-06-25 2020-06-02 贵州航天精工制造有限公司 Technological method for improving mechanical property of certain type nut

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CN105755265A (en) * 2014-12-13 2016-07-13 重庆环德科技有限公司 Dividing head worm heat treatment process

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CN105755265A (en) * 2014-12-13 2016-07-13 重庆环德科技有限公司 Dividing head worm heat treatment process

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* Cited by examiner, † Cited by third party
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CN107904549A (en) * 2017-10-16 2018-04-13 武汉钢铁有限公司 A kind of processing method of 1300MPa grades of gradient performance thermoformed parts and application
CN110484857A (en) * 2019-09-28 2019-11-22 贵州航天精工制造有限公司 A kind of process improving eccentric bush performance

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CN108913850B (en) 2019-11-08
CN108913850A (en) 2018-11-30
CN109023221A (en) 2018-12-18
CN106555153B (en) 2018-09-21
CN109023221B (en) 2019-11-08
CN108950466A (en) 2018-12-07
CN108950466B (en) 2019-10-29

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