CN107604278A - A kind of technique for controlling high temperature alloy product heat treatment cooling velocity - Google Patents
A kind of technique for controlling high temperature alloy product heat treatment cooling velocity Download PDFInfo
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- CN107604278A CN107604278A CN201710941505.1A CN201710941505A CN107604278A CN 107604278 A CN107604278 A CN 107604278A CN 201710941505 A CN201710941505 A CN 201710941505A CN 107604278 A CN107604278 A CN 107604278A
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Abstract
The invention discloses a kind of technique for controlling high temperature alloy product heat treatment cooling velocity, the heat-insulation layer that can be moved first is set, pushing meanss are set, it is more than or equal to 1200 DEG C of insulation material heat-insulation layer in the output end setting hollow-core construction and heatproof of pushing meanss, and the hollow position of heat-insulation layer is be able to will can to need to control the high temperature alloy product of cooling velocity to be coated when pushing meanss promote, and pushing meanss are externally provided with overcoat；High temperature alloy product cladding is got up and is heated to temperature as defined in solution heat treatment by pushing meanss Work Promote heat-insulation layer, and then the hardening constituent γ ' of held for some time to high temperature alloy product partly or entirely dissolves；After insulation terminates, the high temperature alloy product for coating heat-insulation layer is cooled down, after being cooled to design temperature；Then pushing meanss are set back, and Ageing Treatment is carried out to the high temperature alloy product for removing heat-insulation layer.The present invention solves the problems, such as that existing heat treatment cooling velocity is too fast or causes high temperature alloy performance deficiency slowly excessively.
Description
Technical field
The present invention relates to a kind of high temperature alloy manufacture field, especially a kind of control high temperature alloy product heat treatment cooling speed
The technique of degree.
Background technology
High temperature alloy is also known as heat strong alloy, heat-resisting alloy or superalloy, as modern age Aviation Industry gets up
A kind of novel fire resistant metal material, this material can under 600~1100 DEG C of hot environment long-term stable operation, in high temperature
Under bear corrosion, oxidation and complex stress without fail.High temperature alloy can be substantially divided into iron-base superalloy, Ni-based by composition
High temperature alloy and cobalt base superalloy, solution strengthening type, precipitation hardenable and dispersion strengthening type can be divided into by schedule of reinforcement.
The heat treatment of current high temperature alloy is realized by two ways, is first dissolved then timeliness, when high temperature alloy heats
To after solid solubility temperature and held for some time section, the hardening constituent in alloy has wholly or largely been dissolved in austenitic matrix,
Certain amount hardening constituent is had in cooling procedure to separate out again.The hardening constituent γ ' separated out in solid solution cooling procedure quantity, shape
Shape, size and distribution can be to the precipitation generation significant impacts of hardening constituent γ ' in follow-up ag(e)ing process, and then influence high temperature alloy system
The performance of product.With stepping up for high temperature alloy product alloying level, the cooling velocity after solution heat treatment is strong to precipitating
The influence that change mutually goes out precipitation can be more notable.Therefore for heat treatment, cooling procedure directly affects the final effect of product,
Such as current several cooling means：1st, furnace cooling：Obtained tissue hardness is low, plasticity good toughness；2nd, cooled down in air：Than
Furnace cooling tissue hardness is slightly higher, but plasticity toughness is slightly worse 3, quick cooling：Quench, cool down in a liquid, obtain martensite
Tissue, hardness is high and plasticity poor toughness, therefore it is particularly important how to change heat treatment cooling velocity.
The content of the invention
A kind of control high temperature alloy product heat is provided the invention aims to solve above-mentioned the deficiencies in the prior art
The technique for handling cooling velocity.It can obtain good combination property, so as to solve existing solution heat treatment cooling velocity mistake
The problem of causing soon or slowly high temperature alloy performance deficiency excessively.
To achieve these goals, the work of a kind of control high temperature alloy product heat treatment cooling velocity designed by the present invention
Skill, specifically include following steps：
The heat-insulation layer that S1, setting can move, first sets pushing meanss, and hollow-core construction is set in the output end of pushing meanss
Heat-insulation layer, and the hollow position of the heat-insulation layer be can when pushing meanss promote can will need control cooling velocity height
Temperature alloy product is coated, and heat-insulation layer is that insulation material of the heatproof more than or equal to 1200 DEG C is prepared；And the promotion
Device is externally provided with the overcoat that material of the heatproof more than or equal to 1200 DEG C forms；
S2, when needing to be incubated high temperature alloy product, pushing meanss Work Promote heat-insulation layer is by high temperature alloy system
Product cladding is got up, and is then heated to temperature as defined in solution heat treatment, then held for some time to the high temperature alloy product
Hardening constituent γ ' partly or entirely dissolve；
After S3, the insulation terminate, the high temperature alloy product for coating the heat-insulation layer is cooled down, is cooled to setting temperature
After degree；Then pushing meanss set back, and remove the heat-insulation layer on the high temperature alloy product；
S4, Ageing Treatment is carried out to the high temperature alloy product for removing heat-insulation layer.
Further, the heat-insulation layer is three-decker, and outer layer and internal layer are that insulation of the heatproof more than or equal to 1200 DEG C applies
Material, the internal layer are hard material of the heatproof more than or equal to 1200 DEG C as support.
Further, the high temperature alloy product after being dissolved in step s 4 passes through micro air-cooled 20~24 at 835~855 DEG C
Hour, then it is furnace-cooled to 710~730 DEG C and 19-20 hours is cooled down by air cooling, carries out secondary ageing, the nickel after being heat-treated
Based precipitation hardening type high temperature alloy finished product.
Further, in step s 4 be dissolved after high temperature alloy product at 840 DEG C by micro air-cooled 24 hours, then
It is furnace-cooled to 720 DEG C to cool down 19.5 hours by air cooling, carries out secondary ageing, the Ni-based precipitation hardenable high temperature after being heat-treated
Alloy finished product.
Further, the overcoat is alumina silicate fiber felt of the heatproof more than or equal to 1200 DEG C as overcoat.
A kind of technique of control high temperature alloy product that the present invention obtains heat treatment cooling velocity, by need to control it is cold
But insulation material of the one layer of removable and heatproof more than or equal to 1200 DEG C is coated on the high temperature alloy product of speed as heat-insulation layer,
Using heat-insulation layer control high temperature alloy product heat treatment cooling velocity, so as to control hardening constituent γ ' Precipitation Behavior, sky is eliminated
The intensity that the notch sensitivity and stove cold belt that cold belt comes are come significantly decays, and obtains high temperature alloy product good comprehensive
Can, and when that need not be incubated, the heat-insulation layer is quickly removed, therefore the method for the present invention is easy to operate, cheap, and can
Enough solves problem of the prior art.
Brief description of the drawings：
Fig. 1 is a kind of concrete structure for controlling high temperature alloy product heat treatment cooling velocity heat-insulation layer to set in embodiment 1
Schematic diagram.
In reference：Pushing meanss 1；Heat-insulation layer 2；Overcoat 3.
Embodiment
With reference to embodiment, the present invention is further described.
Embodiment 1：
As shown in figure 1, a kind of technique for control high temperature alloy product heat treatment cooling velocity that the present embodiment provides, specifically
Comprise the following steps：
The heat-insulation layer 2 that S1, setting can move, pushing meanss 1 are first set, set in the output end of pushing meanss 1 hollow
The heat-insulation layer 2 of structure, and the hollow position of the heat-insulation layer 2 is be able to will can to need to control cooling when pushing meanss 1 promote
The high temperature alloy product of speed is coated, and heat-insulation layer is that insulation material of the heatproof more than or equal to 1200 DEG C is prepared；And
The pushing meanss 1 are externally provided with the overcoat 3 that material of the heatproof more than or equal to 1200 DEG C forms；
S2, when needing to be incubated high temperature alloy product, the Work Promote heat-insulation layer 2 of pushing meanss 1 is by high temperature alloy
Product cladding is got up, and is then heated to temperature as defined in solution heat treatment, then held for some time to the high temperature alloy system
The hardening constituent γ ' of product partly or entirely dissolves；
After S3, the insulation terminate, the high temperature alloy product for coating the heat-insulation layer 2 is cooled down, is cooled to setting
After temperature；Then pushing meanss 1 set back, and remove the heat-insulation layer 2 on the high temperature alloy product；
S4, Ageing Treatment is carried out to the high temperature alloy product for removing heat-insulation layer 2.
Further, the heat-insulation layer 2 is three-decker, and outer layer and internal layer are that insulation of the heatproof more than or equal to 1200 DEG C applies
Material, the internal layer are hard material of the heatproof more than or equal to 1200 DEG C as support.
Further, the high temperature alloy product after being dissolved in step s 4 passes through micro air-cooled 20~24 at 835~855 DEG C
Hour, then it is furnace-cooled to 710~730 DEG C and 19-20 hours is cooled down by air cooling, carries out secondary ageing, the nickel after being heat-treated
Based precipitation hardening type high temperature alloy finished product.
Further, in step s 4 be dissolved after high temperature alloy product at 840 DEG C by micro air-cooled 24 hours, then
It is furnace-cooled to 720 DEG C to cool down 19.5 hours by air cooling, carries out secondary ageing, the Ni-based precipitation hardenable high temperature after being heat-treated
Alloy finished product.
Further, the overcoat 3 is alumina silicate fiber felt of the heatproof more than or equal to 1200 DEG C as overcoat 3.
Embodiment 2：
A kind of technique for control high temperature alloy product heat treatment cooling velocity that the present embodiment provides, specifically includes following step
Suddenly：
The heat-insulation layer 2 that S1, setting can move, pushing meanss 1 are first set, set in the output end of pushing meanss 1 hollow
The heat-insulation layer 2 of structure, and the hollow position of the heat-insulation layer 2 is be able to will can to need to control cooling when pushing meanss 1 promote
The high temperature alloy product of speed is coated, and heat-insulation layer is that insulation material of the heatproof more than or equal to 1200 DEG C is prepared；And
The pushing meanss 1 are externally provided with the overcoat 3 that material of the heatproof more than or equal to 1200 DEG C forms；
S2, when needing to be incubated high temperature alloy product, the Work Promote heat-insulation layer 2 of pushing meanss 1 is by high temperature alloy
Product cladding is got up, and is then heated to temperature as defined in solution heat treatment, then held for some time to the high temperature alloy system
The hardening constituent γ ' of product partly or entirely dissolves；
After S3, the insulation terminate, the high temperature alloy product for coating the heat-insulation layer 2 is cooled down, is cooled to setting
After temperature；Then pushing meanss 1 set back, and remove the heat-insulation layer 2 on the high temperature alloy product；
S4, Ageing Treatment is carried out to the high temperature alloy product for removing heat-insulation layer 2, concrete mode is：High temperature after solid solution closes
Golden product, by micro air-cooled 20 hours, is then furnace-cooled to 710 DEG C and cooled down 19 hours by air cooling, carried out secondary at 835 DEG C
Timeliness, the Ni-based precipitation hardenable high temperature alloy finished product after being heat-treated.
Further, the heat-insulation layer 2 is three-decker, and outer layer and internal layer are that insulation of the heatproof more than or equal to 1200 DEG C applies
Material, the internal layer are hard material of the heatproof more than or equal to 1200 DEG C as support.
Further, the overcoat 3 is alumina silicate fiber felt of the heatproof more than or equal to 1200 DEG C as overcoat 3.
Embodiment 3：
A kind of technique for control high temperature alloy product heat treatment cooling velocity that the present embodiment provides, specifically includes following step
Suddenly：
The heat-insulation layer 2 that S1, setting can move, pushing meanss 1 are first set, set in the output end of pushing meanss 1 hollow
The heat-insulation layer 2 of structure, and the hollow position of the heat-insulation layer 2 is be able to will can to need to control cooling when pushing meanss 1 promote
The high temperature alloy product of speed is coated, and heat-insulation layer is that insulation material of the heatproof more than or equal to 1200 DEG C is prepared；And
The pushing meanss 1 are externally provided with the overcoat 3 that material of the heatproof more than or equal to 1200 DEG C forms；
S2, when needing to be incubated high temperature alloy product, the Work Promote heat-insulation layer 2 of pushing meanss 1 is by high temperature alloy
Product cladding is got up, and is then heated to temperature as defined in solution heat treatment, then held for some time to the high temperature alloy system
The hardening constituent γ ' of product partly or entirely dissolves；
After S3, the insulation terminate, the high temperature alloy product for coating the heat-insulation layer 2 is cooled down, is cooled to setting
After temperature；Then pushing meanss 1 set back, and remove the heat-insulation layer 2 on the high temperature alloy product；
S4, Ageing Treatment is carried out to the high temperature alloy product for removing heat-insulation layer 2, concrete mode is：High temperature after solid solution closes
Golden product, by micro air-cooled 24 hours, is then furnace-cooled to 730 DEG C and cooled down 20 hours by air cooling, carried out secondary at 855 DEG C
Timeliness, the Ni-based precipitation hardenable high temperature alloy finished product after being heat-treated.
Embodiment 4：
The technique for a kind of control high temperature alloy product heat treatment cooling velocity that the present embodiment provides, in step s 4 to going
Except the high temperature alloy product of heat-insulation layer 2 carries out Ageing Treatment, concrete mode is：High temperature alloy product after solid solution is at 845 DEG C
By micro air-cooled 22 hours, then it is furnace-cooled to 725 DEG C and is cooled down 19.8 hours by air cooling, carry out secondary ageing, obtain hot place
Ni-based precipitation hardenable high temperature alloy finished product after reason.
The present embodiment is by the way that one layer of cladding is removable on the high temperature alloy product for needing to control cooling velocity and heatproof is big
In the insulation material equal to 1200 DEG C as heat-insulation layer, using heat-insulation layer control high temperature alloy product heat treatment cooling velocity, from
And hardening constituent γ ' Precipitation Behavior is controlled, eliminate the notch sensitivity that air cooling brings and the intensity that stove cold belt comes significantly declines
Subtract, high temperature alloy product is obtained good combination property, and when that need not be incubated, the heat-insulation layer is quickly removed, because
This method of the invention is easy to operate, cheap, can solve the problem that problem of the prior art again.
Claims (5)
- A kind of 1. technique for controlling high temperature alloy product heat treatment cooling velocity, it is characterised in that：Specifically include following steps：The heat-insulation layer (2) that S1, setting can move, pushing meanss (1) are first set, set in the output end of pushing meanss (1) empty The heat-insulation layer (2) of core structure, and the hollow position of the heat-insulation layer (2) is be able to will can be needed when pushing meanss (1) promote The high temperature alloy product of control cooling velocity is coated, and heat-insulation layer is prepared by insulation material of the heatproof more than or equal to 1200 DEG C Form；And the pushing meanss (1) are externally provided with the overcoat (3) that material of the heatproof more than or equal to 1200 DEG C forms；S2, when needing to be incubated high temperature alloy product, pushing meanss (1) Work Promote heat-insulation layer (2) is by high temperature alloy Product cladding is got up, and is then heated to temperature as defined in solution heat treatment, then held for some time to the high temperature alloy system The hardening constituent γ ' of product partly or entirely dissolves；After S3, the insulation terminate, the high temperature alloy product for coating the heat-insulation layer (2) is cooled down, is cooled to setting temperature After degree；Then pushing meanss (1) set back, and remove the heat-insulation layer (2) on the high temperature alloy product；S4, Ageing Treatment is carried out to the high temperature alloy product for removing heat-insulation layer (2).
- A kind of 2. technique for controlling high temperature alloy product heat treatment cooling velocity according to claim 1, it is characterised in that： The heat-insulation layer (2) is three-decker, and outer layer and internal layer are the thermal insulation coatings that heatproof is more than or equal to 1200 DEG C, and the internal layer is Hard material of the heatproof more than or equal to 1200 DEG C is as support.
- 3. a kind of technique for controlling high temperature alloy product heat treatment cooling velocity according to claim 1 or 2, its feature exist In：High temperature alloy product after being dissolved in step s 4 at 835~855 DEG C by micro air-cooled 20~24 hours, Ran Houlu It is cooled to 710~730 DEG C and 19-20 hours is cooled down by air cooling, carries out secondary ageing, the Ni-based precipitation hardenable after being heat-treated High temperature alloy finished product.
- A kind of 4. technique for controlling high temperature alloy product heat treatment cooling velocity according to claim 3, it is characterised in that： High temperature alloy product after being dissolved in step s 4, by micro air-cooled 24 hours, is then furnace-cooled to 720 DEG C and passed through at 840 DEG C Air cooling cools down 19.5 hours, carries out secondary ageing, the Ni-based precipitation hardenable high temperature alloy finished product after being heat-treated.
- 5. a kind of technique for controlling high temperature alloy product heat treatment cooling velocity according to claim 1 or 2, its feature exist In：The overcoat (3) is alumina silicate fiber felt of the heatproof more than or equal to 1200 DEG C as overcoat (3).
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| CN104263998A (en) * | 2014-09-18 | 2015-01-07 | 中国华能集团公司 | Heat treatment process for nickel-iron-chromium-boron high-temperature alloy |
| CN104878174A (en) * | 2014-02-28 | 2015-09-02 | 钢铁研究总院 | Method for controlling heat treatment cooling speed of high temperature alloy product |
| CN105385973A (en) * | 2015-11-27 | 2016-03-09 | 钢铁研究总院 | Thermal treatment process for nickel-based superalloy |
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2017
- 2017-10-11 CN CN201710941505.1A patent/CN107604278A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276332A (en) * | 2013-05-13 | 2013-09-04 | 沈阳黎明航空发动机(集团)有限责任公司 | Manufacturing method for improving cast K4169 high-temperature alloy welding quality |
| CN104878174A (en) * | 2014-02-28 | 2015-09-02 | 钢铁研究总院 | Method for controlling heat treatment cooling speed of high temperature alloy product |
| CN103898426A (en) * | 2014-03-26 | 2014-07-02 | 西安热工研究院有限公司 | Heat treatment process of wrought nickel-iron-chromium based high temperature alloy |
| CN104004980A (en) * | 2014-06-12 | 2014-08-27 | 航天精工股份有限公司 | Heat processing technology for nickel-base precipitation hardened high-temperature alloy |
| CN104263998A (en) * | 2014-09-18 | 2015-01-07 | 中国华能集团公司 | Heat treatment process for nickel-iron-chromium-boron high-temperature alloy |
| CN105385973A (en) * | 2015-11-27 | 2016-03-09 | 钢铁研究总院 | Thermal treatment process for nickel-based superalloy |
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Application publication date: 20180119 |