CN109680243A - The asymmetric revolution class titanium alloy component of thin-walled small-medium size nitrogenizes deformation control method - Google Patents
The asymmetric revolution class titanium alloy component of thin-walled small-medium size nitrogenizes deformation control method Download PDFInfo
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- CN109680243A CN109680243A CN201811479928.7A CN201811479928A CN109680243A CN 109680243 A CN109680243 A CN 109680243A CN 201811479928 A CN201811479928 A CN 201811479928A CN 109680243 A CN109680243 A CN 109680243A
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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
- C23C8/06—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
- C23C8/36—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 using ionised gases, e.g. ionitriding
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- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
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Abstract
The invention belongs to technical field of metal heat treatment, are related to a kind of lower superfinishing control method deformed of asymmetric revolution labyrinth titanium alloy component High temperature ion nitridation of thin-walled small-medium size.Part, tooling are overlapped with the effective workspace three geometric center of ion nitriding furnace by stainless steel pipe, the titanium alloy Auxiliary support column of TC4 material using the tubular tooling of TC4 material.800~950 DEG C of the high temperature anneals are carried out before part nitridation, with the heating of 0.5~4 DEG C/min and 300~450 DEG C of rate of temperature fall progress, 500~650 DEG C of steps heatings, heat preservation and cooling.Nitridation uses the special equipment with auxiliary thermal source, start Heated by Glow Discharge system when being warming up to 300~400 DEG C, 780~900 DEG C of 2~20h of nitridation, the lower superfinishing control deformed of size revolution labyrinth titanium alloy component High temperature ion nitridation asymmetric no more than the thin-walled of 100mm, 2~5mm of effective thickness is realized, deflection is no more than 0.010mm.
Description
Technical field
The invention belongs to technical field of metal heat treatment, are related to a kind of asymmetric revolution labyrinth titanium of thin-walled small-medium size
The lower superfinishing control method deformed of alloy part High temperature ion nitridation.
Background technique
Requirement after traditional part ionic nitriding to Deformation control is lower, as long as infiltration layer meets technique after part ionic nitriding
It is required that.Titanium alloy ionic nitriding needs carried out at a high temperature of 780 DEG C or more, currently, by ionic nitriding equip and it is existing
The limitation of technical conditions, titanium alloy thin wall parts with complex structures, especially asymmetric revolution class thin-walled parts, difficulty are very big.
For aerospace field under the double requirements that loss of weight and specific strength design, some labyrinth thin-walled small-medium sizes are non-
Symmetrical rotary part proposes high requirement to deformation, and deflection is no more than 0.01mm after ionic nitriding, at present prior art
Technology is unable to reach this technical requirements.
Summary of the invention
The object of the present invention is to provide a kind of asymmetric revolution labyrinth titanium alloy component high temperature of thin-walled small-medium size from
The lower superfinishing control method deformed of son nitridation.
Technical solution of the invention are as follows: a kind of asymmetric revolution labyrinth titanium alloy component of thin-walled small-medium size is high
The superfinishing control method deformed under warm ionic nitriding builds equipotential office using auxiliary mould cathode in ion nitriding furnace
Domain negative glow space.
The titanium alloy ionic nitriding special tooling is tubular construction, and tool structure is as shown in attached drawing 1.It is led by stainless steel
Pipe support, is connected with cathode disc, and is in the geometric center of the effective workspace of titanium alloy ionic nitriding special equipment.
The titanium alloy thin-wall part is put into titanium alloy ionic nitriding special tooling.
The Auxiliary support column that the titanium alloy component is made using titanium alloy TC 4 material, makes part axle center and tooling shaft
The heart is coaxial.
The Auxiliary support column, to improve current density of part during ionic nitriding, with feature contacts position
It sets within downward 30mm, column diameter cannot be greater than φ 5mm, and column needs to be distributed in tubular tooling bottom and in sustained height
It is horizontal.
The tooling material is TC4.
The titanium alloy ionic nitriding special equipment needs cathode pan bottom temperature-control heat couple passing through tubular tooling bottom
It is led near titanium alloy component on hole.
The titanium alloy component size is not more than 100mm, 2~5mm of effective thickness, and part outer diameter and tubular tooling inner wall are most
Small unilateral distance is greater than 20mm.
The titanium alloy component deformation superfinishing control needs to carry out 800~950 DEG C of high temperature to part before ionic nitriding to move back
Fire processing.
The titanium alloy component deformation superfinishing control, ion nitriding technology temperature is 780~900 DEG C, temperature retention time of nitrogenization
For 2~20h.
The titanium alloy component deformation superfinishing control, needs to carry out ladder-elevating temperature, heat preservation and cooling in ionic nitriding, rise
Temperature is 0.5~4 DEG C/min with rate of temperature fall.
The titanium alloy component deformation superfinishing control, ladder-elevating temperature and cooling temperature range are respectively 300~450 DEG C, 500
~650 DEG C.
The titanium alloy component deformation superfinishing control, the titanium alloy ionic nitriding special equipment used have auxiliary thermal source,
And start Heated by Glow Discharge system at 300~400 DEG C.
The solution have the advantages that: the asymmetric revolution labyrinth titanium alloy component high temperature of thin-walled small-medium size of the present invention
The superfinishing control method deformed under ionic nitriding constructs equipotential local negative glow space using auxiliary cathode tubular tooling, leads to
Cross part, the tooling mode Chong Die with workspace three's geometric center effective in ion nitriding furnace, when ionic nitriding takes ladder
Heating, heat preservation and cooling, under the premise of titanium alloy component nitration case meets design requirement, it is non-right to realize thin-walled small-medium size
Claim the nitridation of revolution labyrinth titanium alloy component High temperature ion the lower superfinishing control deformed, deflection is no more than 0.010mm.
Detailed description of the invention
Fig. 1 is tubular tooling side wall schematic diagram；
Fig. 2 is tubular tooling base schematic diagram；
Fig. 3 is asymmetric rotary thin-wall titanium alloy component schematic diagram；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the charging mode schematic diagram for certain size titanium alloy part during ionic nitriding；
Fig. 6 is Fig. 5 top view,
Wherein, 1- tubular construction tooling, 2- titanium alloy component, the automatically controlled thermocouple of 3-, 4- Auxiliary support column, 5- ionic nitrogen
Change furnace.
Specific embodiment
Below with reference to embodiment, the present invention will be further described:
Fig. 1 and Fig. 2 are please referred to, the asymmetric revolution class titanium alloy component of thin-walled small-medium size of the present invention nitrogenizes Deformation control side
Method utilizes auxiliary mould cathode, and equipotential local negative glow space is built in ion nitriding furnace.Wherein, the auxiliary mould
Cathode is tubular construction tooling, is supported by stainless steel pipe, is connected with cathode disc, and is in that titanium alloy ionic nitriding is dedicated sets
Have the geometric center of effect workspace.
The present invention is shown in Fig. 3 and Fig. 4, effective thickness is only by taking certain size titanium alloy thin-walled parts parts with complex structures as an example
For 3mm.
The titanium alloy ionic nitriding special equipment for having auxiliary thermal source is chosen, it is uniform that geometric space furnace temperature in furnace can be improved
Property, furnace temperature fluctuation is reduced, part deformation degree caused by reducing because of furnace temperature fluctuation.
It is supported by using stainless steel pipe, is connected with cathode disc, using tubular auxiliary cathode tooling, in ion nitriding furnace
Inside build equipotential negative glow geometric space.In the geometric space, electrification cation is influenced by equipotential, to tubular
Part bombardment uniformity in tooling is substantially improved, and macro manifestations are that the being heated evenly property of part is improved.
Part outer diameter and tubular tooling inner wall minimum range 35mm, have prevented the generation of hollow cathode effect.
The use of Auxiliary support column diameter is φ 5mm, is used to support part, can effectively improve ion nitriding furnace inner cathode
Disk can effectively reduce aura thickness degree by current strength of the auxiliary strut to parts transport.
By cathode pan bottom temperature-control heat couple by leading near titanium alloy component in tubular tooling base apertures, zero is improved
Technological temperature monitoring capacity of the part in nitridation process.The equal hole of bottom surface in tubular tooling is convenient for charged particle from tooling
Part is bombarded in upper and lower two sides simultaneously, and both direction is heated evenly part up and down.By the present invention in that part, tubular tooling and ion
Nitriding furnace effective workspace three geometric center overlapping, greatly improve part in ionic nitriding all directions by band electrochondria
The consistency of sub- heat bombardment, that is, being heated evenly property are effectively ensured.
When the asymmetric revolution class titanium alloy component nitridation deformation control method of thin-walled small-medium size of the present invention is embodied:
After carrying out 900 DEG C of high annealing 6h before part nitridation, then carry out High temperature ion nitridation；
Part takes step-wise manner heating and cooling, and being raised to 400 DEG C of heating rates from room temperature is 2 DEG C/min, is warming up to 300 DEG C
When, start Heated by Glow Discharge system, continue to heat up, keeps the temperature 2h after 400 DEG C to temperature, be then warming up to 550 DEG C with 1.5 DEG C/min, arrive
1.5h is kept the temperature after temperature, is continued to be warming up to 850 DEG C with 1 DEG C/min, is kept the temperature 10h.Then 550 DEG C are cooled to 1 DEG C/min, to after temperature
Keep the temperature 1.5h, then be cooled to 400 DEG C with 1.5 DEG C/min, to temperature after keep the temperature 2h, stop Heated by Glow Discharge system, finally with 2 DEG C/min
After being down to 200 DEG C, blow-on simultaneously takes out titanium alloy component；
By taking high annealing, so that the thermal structure stability of part is guaranteed, be aided with ladder-elevating temperature, heat preservation, cooling
Mode, keep part thermal stress in heating, heat preservation and temperature-fall period relatively small.
By the use of the above method, the final oval and taper of the part is below 0.005mm, meets technique requirement,
Realize the superfinishing control of the asymmetric revolution class titanium alloy component High temperature ion nitridation deformation of small-medium size.
Claims (10)
1. a kind of asymmetric revolution class titanium alloy component of thin-walled small-medium size nitrogenizes deformation control method, which is characterized in that utilize
Auxiliary mould cathode builds equipotential local negative glow space in ion nitriding furnace.
2. the asymmetric revolution class titanium alloy component of thin-walled small-medium size according to claim 1 nitrogenizes deformation control method,
It is characterized in that, the auxiliary mould cathode is tubular construction, is supported by stainless steel pipe, be connected with cathode disc, and be in
The geometric center of the effective workspace of ion nitriding furnace.
3. the asymmetric revolution class titanium alloy component of thin-walled small-medium size according to claim 1 nitrogenizes deformation control method,
It is characterized in that, the titanium alloy component is put into tubular construction, the auxiliary that titanium alloy component is made using titanium alloy TC 4 material
Support post, and keep part axle center and tooling axle center coaxial.
4. the asymmetric revolution class titanium alloy component of thin-walled small-medium size according to claim 3 nitrogenizes deformation control method,
It is characterized in that, column diameter cannot be greater than φ 5mm within the Auxiliary support column and the downward 30mm in feature contacts position,
Column needs to be distributed in tubular tooling bottom and in sustained height level.
5. the asymmetric revolution class titanium alloy component of thin-walled small-medium size according to claim 1 nitrogenizes deformation control method,
It is characterized in that, by cathode pan bottom temperature-control heat couple by being led near titanium alloy component in tubular tooling base apertures.
6. the asymmetric revolution class titanium alloy component of thin-walled small-medium size according to claim 1 nitrogenizes deformation control method,
It is characterized in that, the titanium alloy component carries out 800~950 DEG C of the high temperature anneals before ionic nitriding.
7. the asymmetric revolution class titanium alloy component of thin-walled small-medium size according to claim 6 nitrogenizes deformation control method,
It is characterized in that, ion nitriding technology temperature is 780~900 DEG C, temperature retention time of nitrogenization is 2~20h.
8. the asymmetric revolution class titanium alloy component of thin-walled small-medium size according to claim 7 nitrogenizes deformation control method,
It is characterized in that, carrying out ladder-elevating temperature, heat preservation and cooling in ionic nitriding, heating is 0.5~4 DEG C/min with rate of temperature fall,
Ladder-elevating temperature and cooling temperature range are respectively 300~450 DEG C, 500~650 DEG C.
9. the asymmetric revolution class titanium alloy component of thin-walled small-medium size according to claim 1 nitrogenizes deformation control method,
It is characterized in that, the titanium alloy component size is not more than 100mm, 2~5mm of effective thickness, part outer diameter and tooling inner wall are most
Small unilateral distance is greater than 20mm.
10. the asymmetric revolution class titanium alloy component of thin-walled small-medium size according to claim 1 nitrogenizes deformation control method,
It is characterized in that, the ion nitriding furnace has auxiliary thermal source, start Heated by Glow Discharge system at 300~400 DEG C.
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| CN201811479928.7A CN109680243B (en) | 2018-12-05 | 2018-12-05 | Thin-wall medium-small-size asymmetric rotation type titanium alloy part nitriding deformation control method |
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| CN201811479928.7A CN109680243B (en) | 2018-12-05 | 2018-12-05 | Thin-wall medium-small-size asymmetric rotation type titanium alloy part nitriding deformation control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117816978A (en) * | 2024-03-04 | 2024-04-05 | 西安赛隆增材技术股份有限公司 | Post-treatment method for thin-wall component |
| CN117816978B (en) * | 2024-03-04 | 2024-06-07 | 西安赛隆增材技术股份有限公司 | Post-treatment method for thin-wall component |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103320772A (en) * | 2013-07-04 | 2013-09-25 | 大连理工大学 | Metal inner surface modification device and method |
| CN109518121A (en) * | 2018-11-21 | 2019-03-26 | 中国航发哈尔滨东安发动机有限公司 | A method of regulating and controlling thin-wall titanium alloy part deformation using hollow cathode effect |
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2018
- 2018-12-05 CN CN201811479928.7A patent/CN109680243B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103320772A (en) * | 2013-07-04 | 2013-09-25 | 大连理工大学 | Metal inner surface modification device and method |
| CN109518121A (en) * | 2018-11-21 | 2019-03-26 | 中国航发哈尔滨东安发动机有限公司 | A method of regulating and controlling thin-wall titanium alloy part deformation using hollow cathode effect |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117816978A (en) * | 2024-03-04 | 2024-04-05 | 西安赛隆增材技术股份有限公司 | Post-treatment method for thin-wall component |
| CN117816978B (en) * | 2024-03-04 | 2024-06-07 | 西安赛隆增材技术股份有限公司 | Post-treatment method for thin-wall component |
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