CN107287404A - A kind of GH159 bolt heads processing method - Google Patents
A kind of GH159 bolt heads processing method Download PDFInfo
- Publication number
- CN107287404A CN107287404A CN201710528852.1A CN201710528852A CN107287404A CN 107287404 A CN107287404 A CN 107287404A CN 201710528852 A CN201710528852 A CN 201710528852A CN 107287404 A CN107287404 A CN 107287404A
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- China
- Prior art keywords
- bolt
- frequency induction
- processing method
- head
- solid solution
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Classifications
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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
- C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
-
- 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
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of GH159 bolt heads processing method, this method is first to need the position being molded to use high-frequency induction heating solid solution water-cooled process on bolt, then using the shaping of high-frequency induction low-temperature heat upsetting pressure head, head shaping rear bolt carries out Ageing Treatment by standard.The present invention is successfully solved using hot upsetting processing method after a conventional high-frequency induction heating it cannot be guaranteed that the mechanical properties of 1795Mpa ranks GH159 (MP159) bolt tension experiment σ b >=relatively thin bolt of 1795MPa, particularly head thickness technical barrier not up to standard.Therefore, the present invention can be manufactured manufacture field and be promoted in aviation with GH159 (MP159) bolt.
Description
Technical field
The present invention relates to aviation 1795MPa ranks GH159 (MP159) bolt manufacturing processing technic field.
Background technology
Modern high temperature alloy, including iron-based, Ni-based, cobalt base superalloy, wherein GH159 are multiphase cobalt-based high-temperatures abroad
A kind of novel high-strength multiphase cobalt base superalloy grown up on the basis of alloy (MP alloys), it is the trade mark to be equivalent to U.S.A
MP159.It is mainly characterized by：The sheet ε for producing cross network distribution is induced first in face-centered cubic matrix using cold deformation
Reinforcing mutually is produced to prevent the long range motion of dislocation, then the Ni through Wetted constructures diffusion-precipitation3X phases supplement reinforcing.The conjunction
Gold utensil has a superhigh intensity, the combination property such as good plasticity toughness and high stress corrosion, and is remained at a high temperature of 593 DEG C
Keep the characteristic of its high intensity.The alloy can be widely used for the parts such as the high temperature fastener bolt of aero-engine, and the alloy is former
Material is main to be supplied with (solid solution+cold drawn) state, by intensity σ b >=1795MPa after standard institution of prescription timeliness.
Aviation provides that bolt head must use performing hot-heading forming with 1795MPa rank GH159 bolts manufacturing standard, obtains good
Good metal streamline integrates performance to improve it.But, in actual production, after a conventional high-frequency induction heating
The head upsetting processing method of hot upsetting timeliness again, bolt head end hardness only has HRC38~40, it is impossible to be completely secured
1795Mpa ranks GH159 (MP159) bolt tension experiment σ b >=relatively thin bolt of 1795MPa, particularly head thickness, by normal
Mechanical properties when carrying out tension test after hot upsetting timeliness are advised just not occur head up to 1795MPa and pull phenomenon.To find out its cause,
The alloy material mainly strengthens the dual schedule of reinforcement that means are cold deformation strengthening+ageing strengthening, using a conventional high frequency
The head processing method of hot upsetting timeliness again after sensing heating, because heating-up temperature is high, leading edge deformation position is sent out during hot upsetting
Recovery and recrystallization is given birth to, cold deformation strengthening is seriously undermined, the hardness on its head, intensity are well below bar portion after timeliness
Hardness, intensity.Ultimately result in and head occur when tensile test at room temperature tensile strength does not reach 1795Mpa and raise one's hat phenomenon.
The content of the invention
The technical problems to be solved by the invention are the head processing using hot upsetting after a conventional high-frequency induction heating
Method is it cannot be guaranteed that 1795Mpa ranks GH159 (MP159) bolt can integrally bear σ b >=1795MPa technical requirements, especially
The relatively thin bolt of head thickness.
What the present invention was realized in：
The present invention proposes a kind of GH159 bolt heads processing method, is first to need the position being molded using high to bolt
Frequency sensing heating solid solution water-cooled process, then using the shaping of high-frequency induction low-temperature heat upsetting pressure head, head shaping rear bolt is pressed
The processing method that standard carries out Ageing Treatment.It can ensure that GH159 (MP159) bolt head can bear 1795MPa tensions, it is ensured that
Bolt meets σ b >=1795MPa when doing tension test.
Further, the heating temperature for high-frequency induction of solid solution water-cooled process should control 1050 DEG C~1100 DEG C, the line of induction
Internal diameter, heat time and heated current is enclosed to be determined according to bolt specification size；High-frequency induction low-temperature heat temperature during upsetting pressure should
Control is kept not at 800 DEG C~900 DEG C when induction coil internal diameter and heat time are with high-frequency induction heating solid solution water-cooled process
Become, 2/3 when heated current is solid solution high-frequency induction heating.
In the above-mentioned technical solutions, it is necessary to strict control mold temperature and the temperature of water, to ensure the consistent of cooling procedure
Property, so as to ensure the uniformity of mechanical performance.
Compared with GH159 (MP159) bolt head processing method of hot upsetting after a conventional high-frequency induction heating, this hair
Bright use first needs the position being molded to use high-frequency induction heating solid solution water-cooled process, then high-frequency induction low-temperature heat on bolt
Upsetting pressure head is molded, the processing method that head shaping rear bolt is carried out Ageing Treatment by standard.It is preceding to needing by warm upsetting heating
The position of shaping uses high-frequency induction heating solid solution water-cooled process, needs the hardness for being molded position to be down to HRC30 raw material left
The right side, is made type for follow-up bolt head upsetting and provides good plasticity.Then carry out high-frequency induction low-temperature heat upsetting pressure head into
Type, temperature selection strengthens effect in GH159 deformation and recrystallizations temperature the following is in order to retain low temperature deformation, strong with reference to last timeliness
Change the dual reinforcing effect that processing forms " working hardening+ageing strengthening ", and the deflection of head upsetting is higher than GH159 former materials
Expect cold-drawing deformation.Bolt head intensity is set to be improved significantly, hardness reaches more than HRC46, head strength is strong close to bar portion
Degree, so as to ensure that GH159 (MP159) bolt head can carry 1795MPa tensions, it is ensured that bolt can integrally bear σ b >=
1795MPa technical requirements.
The present invention successfully solve using hot upsetting processing method after a conventional high-frequency induction heating it cannot be guaranteed that
The room temperature of 1795Mpa ranks GH159 (MP159) bolt tension experiment σ b >=relatively thin bolt of 1795MPa, particularly head thickness is drawn
Stretch intensity technical barrier not up to standard.Therefore, the present invention can manufacture manufacture field progress in aviation with GH159 (MP159) bolt
Promote.
Brief description of the drawings
Fig. 1 is the GH159 bolt arrangement schematic diagrames of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
The present invention is a kind of GH159 (MP159) bolt head processing method, and the bolt is needed first to needing what is be molded during implementation
Position uses high-frequency induction heating solid solution water-cooled process, then using the shaping of high-frequency induction low-temperature heat upsetting pressure head, head into
Type rear bolt is carried out the warm upsetting processing method of Ageing Treatment by standard.It can ensure that GH159 (MP159) bolt head can be carried
1795MPa tensions, it is ensured that bolt meets σ b >=1795MPa when doing tensile test at room temperature.
Wherein, the heating temperature for high-frequency induction of solid solution water-cooled process should be controlled at 1050 DEG C~1100 DEG C；In induction coil
Footpath, heat time and heated current are determined according to bolt specification size.Heating temperature for high-frequency induction during upsetting pressure should be controlled 800
DEG C~900 DEG C；It is consistent when induction coil internal diameter and heat time are with high-frequency induction heating solid solution water-cooled process, heated current
2/3 during for solid solution high-frequency induction heating.
Test example：
Testing inspection data are as follows：
1st, bolt head end face center hardness
2nd, bolt room temperature tensile properties
Embodiment：
GH159 bolts to the position for needing to be molded as shown in figure 1, use high-frequency induction heating first, heated current 120A,
1080 DEG C of heating-up temperature, 9.5 seconds heat times, water cooling immediately after heating terminates；Then high-frequency induction low-temperature heat, heating are carried out
Electric current 80A, 850 DEG C of heating-up temperature, 9.5 seconds heat times, upsetting head shaping immediately after heating terminates；Then provided by standard
System carry out Ageing Treatment；Finally it is processed into finished product.Mold temperature and the temperature of water must be strictly controlled during warm upsetting,
To ensure the uniformity of cooling procedure, so as to ensure the uniformity of mechanical performance.
Certainly, it is the concrete application example of the present invention above, the present invention also has other embodiments, all using equivalent
Replacement or the technical scheme of equivalent transformation formation, all fall within protection domain of the presently claimed invention.
Claims (3)
1. a kind of GH159 bolt heads processing method, it is characterised in that：First the position being molded is needed to use high-frequency induction on bolt
Solid solution water-cooled process is heated, then using the shaping of high-frequency induction low-temperature heat upsetting pressure head, head shaping rear bolt is entered by standard
Row Ageing Treatment.
2. GH159 bolt heads processing method according to claim 1, it is characterised in that：The high frequency of solid solution water-cooled process
Induction heating temperature should be controlled at 1050 DEG C~1100 DEG C.
3. GH159 bolt heads processing method according to claim 1, it is characterised in that：High-frequency induction during upsetting pressure is low
Warm heating and temperature control is at 800 DEG C~900 DEG C, induction coil internal diameter and heat time and high-frequency induction heating solid solution water-cooled process
When keep constant, heated current be solid solution high-frequency induction heating when 2/3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710528852.1A CN107287404A (en) | 2017-07-01 | 2017-07-01 | A kind of GH159 bolt heads processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710528852.1A CN107287404A (en) | 2017-07-01 | 2017-07-01 | A kind of GH159 bolt heads processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107287404A true CN107287404A (en) | 2017-10-24 |
Family
ID=60099919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710528852.1A Pending CN107287404A (en) | 2017-07-01 | 2017-07-01 | A kind of GH159 bolt heads processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107287404A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110616390A (en) * | 2019-09-28 | 2019-12-27 | 贵州航天精工制造有限公司 | Heat treatment method for improving locking performance of GH4698 self-locking nut |
| CN112642987A (en) * | 2020-12-21 | 2021-04-13 | 贵州航天精工制造有限公司 | GH4169 alloy bolt forming method and alloy bolt |
| CN113199212A (en) * | 2021-04-29 | 2021-08-03 | 上海众源燃油分配器制造有限公司 | Forging process for stainless steel gasoline 350bar high-pressure oil rail |
| CN113231585A (en) * | 2021-04-29 | 2021-08-10 | 上海众源燃油分配器制造有限公司 | 500bar high-pressure oil rail forging process for stainless steel gasoline |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443946A (en) * | 2003-04-17 | 2003-09-24 | 南京汽车集团有限公司 | Production process of high strength bolt with above 1300MPa |
| CN101890618A (en) * | 2010-06-17 | 2010-11-24 | 鹏驰五金制品有限公司 | Processing method of high-strength bolts |
| CN103014551A (en) * | 2011-09-22 | 2013-04-03 | 兴化市新迅达不锈钢标准件有限公司 | Novel high-temperature alloy heat-resistant stainless steel bolt and production process thereof |
| CN104152780A (en) * | 2014-08-28 | 2014-11-19 | 航天精工股份有限公司 | Ultra-high-strength fastening connecting piece and manufacturing method thereof |
| CN203979066U (en) * | 2013-12-10 | 2014-12-03 | 中国航空工业标准件制造有限责任公司 | The spline bolt of flanged dish |
| CN105937015A (en) * | 2016-06-07 | 2016-09-14 | 江苏百德特种合金有限公司 | High-strength bolt and preparation method thereof |
| CN106011399A (en) * | 2016-06-07 | 2016-10-12 | 江苏百德特种合金有限公司 | Anticorrosion bolt and preparation method for anticorrosion bolt |
-
2017
- 2017-07-01 CN CN201710528852.1A patent/CN107287404A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443946A (en) * | 2003-04-17 | 2003-09-24 | 南京汽车集团有限公司 | Production process of high strength bolt with above 1300MPa |
| CN101890618A (en) * | 2010-06-17 | 2010-11-24 | 鹏驰五金制品有限公司 | Processing method of high-strength bolts |
| CN103014551A (en) * | 2011-09-22 | 2013-04-03 | 兴化市新迅达不锈钢标准件有限公司 | Novel high-temperature alloy heat-resistant stainless steel bolt and production process thereof |
| CN203979066U (en) * | 2013-12-10 | 2014-12-03 | 中国航空工业标准件制造有限责任公司 | The spline bolt of flanged dish |
| CN104152780A (en) * | 2014-08-28 | 2014-11-19 | 航天精工股份有限公司 | Ultra-high-strength fastening connecting piece and manufacturing method thereof |
| CN105937015A (en) * | 2016-06-07 | 2016-09-14 | 江苏百德特种合金有限公司 | High-strength bolt and preparation method thereof |
| CN106011399A (en) * | 2016-06-07 | 2016-10-12 | 江苏百德特种合金有限公司 | Anticorrosion bolt and preparation method for anticorrosion bolt |
Non-Patent Citations (1)
| Title |
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| 《2015年第二届中国航空科学技术大会论文集》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110616390A (en) * | 2019-09-28 | 2019-12-27 | 贵州航天精工制造有限公司 | Heat treatment method for improving locking performance of GH4698 self-locking nut |
| CN112642987A (en) * | 2020-12-21 | 2021-04-13 | 贵州航天精工制造有限公司 | GH4169 alloy bolt forming method and alloy bolt |
| CN113199212A (en) * | 2021-04-29 | 2021-08-03 | 上海众源燃油分配器制造有限公司 | Forging process for stainless steel gasoline 350bar high-pressure oil rail |
| CN113231585A (en) * | 2021-04-29 | 2021-08-10 | 上海众源燃油分配器制造有限公司 | 500bar high-pressure oil rail forging process for stainless steel gasoline |
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Application publication date: 20171024 |
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