CN106555153B - A kind of blade mounting base heat treatment method - Google Patents

A kind of blade mounting base heat treatment method Download PDF

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Publication number
CN106555153B
CN106555153B CN201510631204.XA CN201510631204A CN106555153B CN 106555153 B CN106555153 B CN 106555153B CN 201510631204 A CN201510631204 A CN 201510631204A CN 106555153 B CN106555153 B CN 106555153B
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Prior art keywords
workpiece
temperature
mounting base
blade mounting
carburizing
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CN106555153A (en
Inventor
利淑琴
吉宜勇
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Changzhou Hangfa China Lanxiang Machinery LLC
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Changzhou Hangfa China Lanxiang Machinery LLC
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Priority to CN201810924700.8A priority Critical patent/CN109023221B/en
Priority to CN201810924698.4A priority patent/CN108913850B/en
Priority to CN201510631204.XA priority patent/CN106555153B/en
Priority to CN201810925322.5A priority patent/CN108950466B/en
Publication of CN106555153A publication Critical patent/CN106555153A/en
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    • 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
    • C23C8/04—Treatment of selected surface areas, e.g. using masks
    • 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
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/22—Martempering
    • 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
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The present invention relates to a kind of blade mounting base heat treatment methods, it include the copper plate for needing carburized zone surface after all carrying out copper plating treatment to blade mounting base workpiece surface using machining removal, then Carburization Treatment is carried out, can achieve the purpose that only to carry out carburizing in regional area.It is protected using solid carburizer when carrying out Quench heating; carburizing layer surface is avoided oxidation and decarbonization occur; after quenching treatment; original salt bath heat-treatment furnace is replaced using moveable thermostatic oil bath; the convergence time of inter process can be reduced; contact when reducing workpiece high temperature with air, avoids carburizing layer surface from decarburization occur；It can avoid workpiece workpiece surface spot temperature in quenching transfer process simultaneously and be down to Ms points（180℃）Below；Temperer vanning of the workpiece merging equipped with protection medium after isothermal hardening, can be kept the temperature, workpiece surface spot temperature is avoided to drop to Ms points（180℃）Hereinafter, heat transfer can be accelerated in subsequent tempering simultaneously, energy loss is reduced.

Description

A kind of blade mounting base 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 base heat treatment method.
Background technology
18Cr2Ni4WA has good processability and anti-fatigue performance, and has ideal quenching degree, obdurability With preferable carburizing controllability, it is to produce the irreplaceable material of heavy load driving member, there is extensive use in aircraft industry On the way, it is the method for conventional raising workpiece surface hardness to the progress carburizing of its surface, Nitrizing Treatment when manufacture.
The blade mounting base case hardness used in aero-engine has particular/special requirement, since it uses characteristic requirements office Portion's carburizing, as shown in Figure 1, a kind of blade mounting base, material 18Cr2Ni4WA, it is desirable that the region Q, R, H, G carries out carburizing in figure Processing, case hardness are not less than 58HRC, and for non-carburized zone, hardness requirement is not less than 33-37HRC, completes Carburization Treatment In quenching process afterwards, it is susceptible to surface oxidation decarburization, the problem of infiltration layer forms tempered sorbite, blade mounting base carburizing face Case hardness cannot be satisfied requirement.
Specified region is carried out carburizing how to protect carburized layer not decarburization after the completion and do not form tempered sorbite being ability Field technique personnel are badly in need of technical problems to be solved.
Invention content
Technical problem to be solved by the invention is to provide a kind of easily operated, effective realization regional area anti-carburizi ng, protect Shield carburized layer not decarburization and the blade mounting base heat treatment method for not forming tempered sorbite.
A kind of blade mounting base heat treatment method, including：
A. blade mounting base workpiece surface is all subjected to copper plating treatment.
B. the region for requiring carburizing is machined out, the copper plate on removal carburized zone surface realizes that regional area oozes Carbon.
C. be placed in the multipurpose furnace of sealing through treated workpiece, be passed through gas carburzier, be heated to 890 DEG C~ 910 DEG C, 10~14 hours are kept the temperature, it is air-cooled after coming out of the stove, Carburization Treatment is carried out to blade mounting base, surface does not have the region of copper plate Obtain carburizing.
D. workpiece is taken out after the completion of carburizing, is tempered, 640 DEG C~660 DEG C of temperature, kept the temperature 5~6 hours, be furnace-cooled to It comes out of the stove after 350 DEG C or less air-cooled.
E. quenching treatment being carried out to blade mounting base workpiece, temperature is 830 DEG C~850 DEG C, keeps the temperature 105~135 minutes, It is protected using solid carburizer vanning embedding during this；Workpiece merging thermostatic oil bath isothermal is carried out rapidly after coming out of the stove to quench Fire, the carburizing face temperature of avoiding are down to Ms points or less（180℃）, quenched martensite is formed, while workpiece being avoided to be contacted with air It is more, cause workpiece carbonization emaciated face carbon, 220 DEG C~240 DEG C of temperature, 8~15 minutes time to be placed in blade mounting base fill after the completion There is the Temperer vanning of protection medium.
F. Temperer vanning is transferred to chamber type annealing stove and first time temper, temperature is carried out to blade mounting base workpiece It is 510 DEG C~570 DEG C, keeps the temperature 1.5~2 hours, then carry out ice-cold, -75 DEG C~-85 DEG C of temperature, keeps the temperature 2~3 hours.
G. second of temper is carried out to blade mounting base workpiece, temperature is 150 DEG C~170 DEG C, heat preservation 2.5~3.5 Hour.
H. workpiece carbonization face and non-carburizing surface hardness are detected, the non-cemented zone of blade mounting base is removed after detection is qualified The copper plate in domain.
Further, the gas carburzier in step C is the mixed gas of acetone, methanol and nitrogen, can effectively control and ooze Carbonaceous amount, production efficiency are high.
Further, the protection medium in step E is sand, can be kept the temperature, avoid workpiece surface in transfer process Temperature is down to surface portion Ms points（180℃）Hereinafter, the carburizing face of avoiding surface forms quenched martensite, while in subsequent tempering In can accelerate heat transfer, reduce energy loss.
To needing carburized zone surface using machining removal after blade mounting base workpiece surface all progress copper plating treatment Then copper plate carries out Carburization Treatment, can achieve the purpose that only to carry out carburizing in regional area.It is adopted when carrying out Quench heating It is protected with solid carburizer, carburizing layer surface is avoided oxidation and decarbonization occur, after quenching treatment, use moveable thermostatical oil Slot replaces original salt bath heat-treatment furnace, it is possible to reduce the convergence time of inter process, contact when reducing workpiece high temperature with air, Carburizing layer surface is avoided decarburization occur；It can avoid workpiece workpiece surface spot temperature in quenching transfer process simultaneously and be down to Ms points （180℃）Hereinafter, the carburizing face of avoiding surface forms quenched martensite, to form tempered sorbite in follow-up drawing process； Temperer of the workpiece merging equipped with sand after isothermal hardening is cased, and can be kept the temperature, workpiece surface spot temperature is avoided to drop To Ms points（180℃）Hereinafter, heat transfer can be accelerated in subsequent tempering simultaneously, energy loss is reduced.By the above method, It can effectively realize carburized layer not decarburization after the completion of specifying region to carry out carburizing, carburizing blade mounting base and not form tempering rope Family name's body is easy to produce in batches, of low cost.
Description of the drawings
Invention is further described in detail with reference to the accompanying drawings of the specification：
Fig. 1 is the schematic diagram that blade mounting base requires carburizing face.
Specific implementation mode
Embodiment 1
The blade mounting base heat treatment method of the present embodiment, treated that blade mounting base is machined to quenched, Remove surface scale；Copper plating treatment is carried out to blade mounting base workpiece surface, it is ensured that workpiece surface all covering copper facing protections Film；Blade mounting base is machined out, the plating Cu protective film of removal Q, R, H, G region surface attachment is convenient for follow-up carburizing.
Blade mounting base workpiece is placed in the multipurpose furnace of sealing, acetone and each accounting of ethyl alcohol 50% are passed through（Volume ratio）'s Gas carburzier, 900 DEG C ± 10 DEG C of temperature keep the temperature 12 hours, air-cooled after coming out of the stove, and carry out Carburization Treatment to blade mounting base, obtain To workpiece need carburized zone surface carburized (case) depth be 1.25~1.35mm；High temperature is carried out to blade mounting base workpiece to return Fire, 650 DEG C ± 10 DEG C of temperature keep the temperature 5 hours, come out of the stove after being furnace-cooled to 350 DEG C air-cooled, can eliminate inside workpiece transformation hardening. Quenching treatment is carried out to blade mounting base workpiece, temperature is 840 ± 10 DEG C, keeps the temperature 75 minutes, is oozed in the process using solid Carbon agent embedding vanning is protected；Workpiece merging thermostatic oil bath is subjected to isothermal hardening rapidly after coming out of the stove, avoids workpiece and air Contact is excessive, causes workpiece carbonization emaciated face carbon, while workpiece workpiece surface spot temperature in quenching transfer process being avoided to be down to Ms points（180℃）Below so that surface forms quenched martensite, to avoid forming tempering Soxhlet in follow-up drawing process Body, 230 ± 10 DEG C of temperature keep the temperature 12 minutes, and Temperer of the blade mounting base merging equipped with sand is cased immediately after the completion.It can To be kept the temperature, workpiece surface spot temperature is avoided to drop to Ms points（180℃）Hereinafter, can accelerate in subsequent tempering simultaneously Heat transfer reduces energy loss；Temperer vanning is transferred to chamber type annealing stove, first time tempering is carried out to blade mounting base workpiece Processing, temperature are 540 ± 30 DEG C, keep the temperature 2 hours, then carry out ice-cold, -75 DEG C~-85 DEG C of temperature, keep the temperature 3 hours.To blade Mounting base workpiece carries out second of temper, and temperature is 160 ± 10 DEG C, keeps the temperature 3 hours, is detected to obtained workpiece, The hardness of carburized zone reaches 60HRC, and the hardness of non-carburized zone is 35HRC, can meet the needs of using.
By all carrying out copper facing to blade mounting base workpiece surface before carburizing, solid is used when carrying out Quench heating Carburizer is protected, and carburizing layer surface is avoided oxidation and decarbonization occur, after quenching treatment, is replaced using moveable thermostatic oil bath Salt bath heat-treatment furnace originally, it is possible to reduce the convergence time of inter process, contact when reducing workpiece high temperature with air avoid oozing There is decarburization in carbon-coating surface；It can avoid workpiece workpiece surface spot temperature in quenching transfer process simultaneously and be down to Ms points（180 ℃）Below so that surface forms quenched martensite, to form tempered sorbite in follow-up drawing process；After isothermal hardening Workpiece merging equipped with protection medium Temperer vanning, can be kept the temperature, workpiece surface spot temperature is avoided to drop to Ms points （180℃）Hereinafter, heat transfer can be accelerated in subsequent tempering simultaneously, energy loss is reduced.
Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and is not to the present invention The restriction of embodiment.For those of ordinary skill in the art, it can also be made on the basis of the above description Its various forms of variation or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair The obvious changes or variations that bright spirit is extended out are still in protection scope of the present invention.

Claims (3)

1. a kind of blade mounting base heat treatment method, which is characterized in that including：
A. blade mounting base workpiece surface is all subjected to copper plating treatment；
B. the region for requiring carburizing is machined out, the copper plate on removal carburized zone surface；
C. it is placed in the multipurpose furnace of sealing through treated workpiece, is passed through gas carburzier, be heated to 890 DEG C~910 DEG C, Heat preservation 10~14 hours, it is air-cooled after coming out of the stove, Carburization Treatment is carried out to blade mounting base, surface does not have the region of copper plate to be oozed Carbon；
D. workpiece is taken out after the completion of carburizing, is tempered, 640 DEG C~660 DEG C of temperature, kept the temperature 5~6 hours, be furnace-cooled to 350 DEG C It comes out of the stove after below air-cooled；
E. quenching treatment is carried out to blade mounting base workpiece, temperature is 830 DEG C~850 DEG C, keeps the temperature 105~135 minutes, herein mistake Workpiece is protected using solid carburizer vanning embedding in journey；Workpiece merging thermostatic oil bath is subjected to isothermal rapidly after coming out of the stove Quenching, 220 DEG C~240 DEG C of temperature, 8~15 minutes time, after the completion by tempering of the blade mounting base merging equipped with protection medium Tooling case；
F. Temperer vanning is transferred to chamber type annealing stove and first time temper, temperature 510 is carried out to blade mounting base workpiece DEG C~570 DEG C, 1.5~2 hours are kept the temperature, ice-cold, -75 DEG C~-85 DEG C of temperature is then carried out, keeps the temperature 2~3 hours；
G. second of temper is carried out to blade mounting base workpiece, temperature is 150 DEG C~170 DEG C, keeps the temperature 2.5~3.5 hours；
H. workpiece carbonization face and non-carburizing surface hardness are detected, the removal non-carburized zone of blade mounting base after detection is qualified Copper plate.
2. blade mounting base heat treatment method according to claim 1, which is characterized in that the gas in the step C oozes Carbon agent is the mixed gas of acetone, methanol and nitrogen.
3. blade mounting base heat treatment method according to claim 1, which is characterized in that the protection in the step E is situated between Matter is sand.
CN201510631204.XA 2015-09-29 2015-09-29 A kind of blade mounting base heat treatment method Active CN106555153B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
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
CN201510631204.XA CN106555153B (en) 2015-09-29 2015-09-29 A kind of blade mounting base heat treatment method
CN201810925322.5A 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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CN201810925322.5A Division CN108950466B (en) 2015-09-29 2015-09-29 The aero-engine blade mounting base of tempered sorbite is not will form
CN201810924700.8A Division CN109023221B (en) 2015-09-29 2015-09-29 The heat treatment method of aero-engine blade mounting base

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CN201510631204.XA Active CN106555153B (en) 2015-09-29 2015-09-29 A kind of blade mounting base heat treatment method
CN201810925322.5A Active CN108950466B (en) 2015-09-29 2015-09-29 The aero-engine blade mounting base of tempered sorbite is not will form
CN201810924700.8A Active CN109023221B (en) 2015-09-29 2015-09-29 The heat treatment method of aero-engine blade mounting base

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CN107904549B (en) * 2017-10-16 2019-12-24 武汉钢铁有限公司 Processing method and application of 1300 MPa-grade gradient performance hot forming part
CN108570640A (en) * 2018-05-29 2018-09-25 沈阳飞机工业（集团）有限公司 A kind of pin local carburzing method
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
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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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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CN1110332A (en) * 1995-03-20 1995-10-18 长春市华光热处理技术研究所 Postheating treatment process after metallic cementation
CN100570006C (en) * 2008-04-30 2009-12-16 上海热处理厂有限公司 The 20CrMnMo energy-saving carburizing composite heat treating process
CN102888610A (en) * 2012-10-24 2013-01-23 哈尔滨东安发动机（集团）有限公司 Thermal treatment method for internal spline gear with small modulus
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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Publication number Publication date
CN108913850B (en) 2019-11-08
CN106555153A (en) 2017-04-05
CN109023221A (en) 2018-12-18
CN108950466B (en) 2019-10-29
CN109023221B (en) 2019-11-08
CN108950466A (en) 2018-12-07
CN108913850A (en) 2018-11-30

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