CN108856609A - A kind of heavy wall 718Plus alloy annular forging milling method - Google Patents
A kind of heavy wall 718Plus alloy annular forging milling method Download PDFInfo
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- CN108856609A CN108856609A CN201810749263.0A CN201810749263A CN108856609A CN 108856609 A CN108856609 A CN 108856609A CN 201810749263 A CN201810749263 A CN 201810749263A CN 108856609 A CN108856609 A CN 108856609A
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- blank
- bar
- ring
- preserving agent
- rolling
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/10—Piercing billets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K29/00—Arrangements for heating or cooling during processing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Forging (AREA)
Abstract
The present invention relates to a kind of heavy wall 718Plus alloy annular forging milling method, specific embodiment includes：Smear heat preserving agent, heating, base, blank isothermal holding, blank heating and ring rolling, in above-mentioned steps, by the amount of feeding, rolling time and the deflection etc. that optimize blank, the final deformation velocity of mill speed and ring is controlled, improve ring cracking and crystal grain problem bigger than normal in forging process, the mechanical property of ring after ring is rolled with raising；Using the problem of package heat-preservation cotton is kept the temperature blank, effective can prevent forging from being led to cracking due to fast cooling in subsequent process forging process outside blank in blank isothermal holding.
Description
Technical field
The present invention relates to high-temperature alloy forging technology field, especially a kind of heavy wall 718Plus alloy annular forging rolling
Method.
Background technique
718Plus alloy is a kind of novel nickel base superalloy, has splendid high-temperature behavior and high-temperature stability, is navigating
It is widely used in empty engine, but due to its complicated component, alloying level is high, therefore exist in forging each
Kind is difficult, causes stock utilization low, the high problem of product rejection rate, especially heavy wall annular 718Plus forging, due to its knot
The problems such as structure reason, there are forging crack, crystallite dimension are bigger than normal, and performance is not able to satisfy requirement in production process, using biography
System manufacturing process has been unable to meet the batch production requirements of 718Plus alloy annular forging.
Summary of the invention
The applicant provides a kind of heavy wall 718Plus alloy annular forging for the disadvantage in above-mentioned existing production technology
Milling method, by improving process conditions, mill speed and ring by the way of jacket heat preservation while during controlled rolling
Final deformation velocity, prevent during the rolling process fast cooling lead to that crystallite dimension is bigger than normal and crystal grain is uneven and ring cracking
The problems such as.
The technical solution adopted in the present invention is as follows：
A kind of heavy wall 718Plus alloy annular forging milling method, specific process step are as follows：
Step 1：Smear heat preserving agent：718Plus alloy bar is placed in heat preservation 30min in 100 DEG C -200 DEG C of electric furnace to go out
Furnace, uniformly smears heat preserving agent in billet surface, so that heat preserving agent is freezed solidly on billet surface using bar own temperature, dry to bar
Afterwards, it repeats to smear heat preserving agent twice；
Step 2：Heating：The bar handled well in step 1 is placed in 1060 DEG C of electric furnace and heats T minutes, wherein T=
Bar outer diameter × 0.8, the unit of the bar outer diameter are mm；
Step 3：Base：The bar heated in step 2 is subjected to jumping-up in quick forging machine, make its deflection >=
50%, the bar height after jumping-up guarantee be the ring reserved 10% of subsequent roll forming deflection, punching after jumping-up is made
Circular material blank with holes；
Step 4：Blank isothermal holding：The circular material blank with holes processed in step 3 is placed in 100 DEG C -200 DEG C of electricity
It comes out of the stove after keeping the temperature 30min in furnace, uniformly smears heat preserving agent in blank surface, so that heat preserving agent is freezed solidly on it using blank own temperature
Glass binder is smeared after blank is dry in surface, when glass binder is moisture state, wraps up the whole of blank with heat-preservation cotton
A outer surface；
Step 5：Blank heating：The blank that step 4 is handled well, which is placed in 1060 DEG C of electric furnace, heats T minutes, wherein T
=sotck thinkness × 1.0, the sotck thinkness are the wall degree of circular material blank with holes, unit mm；
Step 6：Ring rolling：The blank heated in step 5 is rolled after taking out in heating furnace, wherein when shifting
Between≤10s, the amount of feeding is 0.10-0.15mm/s when rolling, and repeat-rolling is multiple, and total rolling time≤60s rolls for the last time
The deflection of system with it is preceding it is primary compared with >=30%.
Its further technical solution is：
In the step 2, furnace temperature is set as 180 DEG C.
In the step 4, furnace temperature is set as 180 DEG C.
In the step 6, total rolling time is 50s.
Beneficial effects of the present invention are as follows：
The present invention passes through the process conditions during optimization ring rolling：By the amount of feeding, the rolling time that optimize blank
With deflection etc., the final deformation velocity of mill speed and ring is controlled, improves in forging process ring cracking and brilliant
Grain problem bigger than normal, the mechanical property of ring after ring is rolled with raising；It is used in blank isothermal holding and wraps up heat preservation outside blank
Cotton keeps the temperature blank, effective can prevent forging from leading to rolling crack due to fast cooling in subsequent forging process.
Specific embodiment
Illustrate a specific embodiment of the invention below.
The heavy wall 718Plus alloy annular forging milling method of the present embodiment, specific process step are as follows：
Step 1：Smear heat preserving agent：718Plus alloy bar is placed in heat preservation 30min in 100 DEG C -200 DEG C of electric furnace to go out
Furnace, uniformly smears heat preserving agent in billet surface, so that heat preserving agent is freezed solidly on billet surface using bar own temperature, dry to bar
Afterwards, it repeats to smear heat preserving agent twice；
Step 2：Heating：The bar handled well in step 1 is placed in 1060 DEG C of electric furnace and heats T minutes, wherein T=
Bar outer diameter × 0.8, the unit of bar outer diameter are mm；
Step 3：Base：The bar heated in step 2 is subjected to jumping-up in quick forging machine, make its deflection >=
50%, the bar height after jumping-up guarantee be the ring reserved 10% of subsequent roll forming deflection, punching after jumping-up is made
Circular material blank with holes；
Step 4：Blank isothermal holding：The circular material blank with holes processed in step 3 is placed in 100 DEG C -200 DEG C of electricity
It comes out of the stove after keeping the temperature 30min in furnace, uniformly smears heat preserving agent in blank surface, so that heat preserving agent is freezed solidly on it using blank own temperature
Glass binder is smeared after blank is dry in surface, when glass binder is moisture state, wraps up the whole of blank with heat-preservation cotton
A outer surface；
Step 5：Blank heating：The blank that step 4 is handled well, which is placed in 1060 DEG C of electric furnace, heats T minutes, wherein T
=sotck thinkness × 1.0, sotck thinkness are the wall degree of circular material blank with holes, unit mm；
Step 6：Ring rolling：The blank heated in step 5 is rolled after taking out in heating furnace, wherein when shifting
Between≤10s, the amount of feeding is 0.10-0.15mm/s when rolling, and repeat-rolling is multiple, and total rolling time≤60s rolls for the last time
The deflection of system with it is preceding it is primary compared with >=30%.
In step 2, furnace temperature is set as 180 DEG C.
In step 4, furnace temperature is set as 180 DEG C.
In step 6, total rolling time is 50s.
Embodiment one：
The heavy wall 718Plus alloy annular forging milling method of the present embodiment, specific process step are as follows：
Step 1：Smear heat preserving agent：718Plus alloy bar is placed in heat preservation 30min in 180 DEG C of electric furnace to come out of the stove,
Billet surface uniformly smears heat preserving agent, so that heat preserving agent is freezed solidly on billet surface using bar own temperature, after bar is dry, weight
Heat preserving agent twice is smeared in overcoating；
Step 2：Heating：The bar handled well in step 1 is placed in 1060 DEG C of electric furnace and heats T minutes, wherein T=
Bar outer diameter × 0.8, the unit of bar outer diameter are mm；
Step 3：Base：The bar heated in step 2 is subjected to jumping-up in quick forging machine, make its deflection >=
50%, the bar height after jumping-up guarantee be the ring reserved 10% of subsequent roll forming deflection, punching after jumping-up is made
Circular material blank with holes；
Step 4：Blank isothermal holding：The circular material blank with holes processed in step 3 is placed in 180 DEG C of electric furnace and is protected
It comes out of the stove after warm 30min, uniformly smears heat preserving agent in blank surface, so that heat preserving agent is freezed solidly on its surface using blank own temperature,
Glass binder is smeared after blank is dry, when glass binder is moisture state, wraps up the entire outer of blank with heat-preservation cotton
Surface；
Step 5：Blank heating：The blank that step 4 is handled well, which is placed in 1060 DEG C of electric furnace, heats T minutes, wherein T
=sotck thinkness × 1.0, sotck thinkness are the wall degree of circular material blank with holes, unit mm；
Step 6：Ring rolling：The blank heated in step 5 is rolled after taking out in heating furnace, wherein when shifting
Between≤10s, the amount of feeding is 0.10-0.15mm/s when rolling, and repeat-rolling is multiple, and total rolling time is 50s, is rolled for the last time
The deflection of system with it is preceding it is primary compared with >=30%.
Embodiment two：
The heavy wall 718Plus alloy annular forging milling method of the present embodiment, specific process step are as follows：
Step 1：Smear heat preserving agent：718Plus alloy bar is placed in heat preservation 30min in 200 DEG C of electric furnace to come out of the stove,
Billet surface uniformly smears heat preserving agent, so that heat preserving agent is freezed solidly on billet surface using bar own temperature, after bar is dry, weight
Heat preserving agent twice is smeared in overcoating；
Step 2：Heating：The bar handled well in step 1 is placed in 1060 DEG C of electric furnace and heats T minutes, wherein T=
Bar outer diameter × 0.8, the unit of bar outer diameter are mm；
Step 3：Base：The bar heated in step 2 is subjected to jumping-up in quick forging machine, make its deflection >=
50%, the bar height after jumping-up guarantee be the ring reserved 10% of subsequent roll forming deflection, punching after jumping-up is made
Circular material blank with holes；
Step 4：Blank isothermal holding：The circular material blank with holes processed in step 3 is placed in 200 DEG C of electric furnace and is protected
It comes out of the stove after warm 30min, uniformly smears heat preserving agent in blank surface, so that heat preserving agent is freezed solidly on its surface using blank own temperature,
Glass binder is smeared after blank is dry, when glass binder is moisture state, wraps up the entire outer of blank with heat-preservation cotton
Surface；
Step 5：Blank heating：The blank that step 4 is handled well, which is placed in 1060 DEG C of electric furnace, heats T minutes, wherein T
=sotck thinkness × 1.0, sotck thinkness are the wall degree of circular material blank with holes, unit mm；
Step 6：Ring rolling：The blank heated in step 5 is rolled after taking out in heating furnace, wherein when shifting
Between≤10s, the amount of feeding is 0.10-0.15mm/s when rolling, and repeat-rolling is multiple, and total rolling time is 45s, is rolled for the last time
The deflection of system with it is preceding it is primary compared with >=30%.
Embodiment three：
The heavy wall 718Plus alloy annular forging milling method of the present embodiment, specific process step are as follows：
Step 1：Smear heat preserving agent：718Plus alloy bar is placed in heat preservation 30min in 100 DEG C of electric furnace to come out of the stove,
Billet surface uniformly smears heat preserving agent, so that heat preserving agent is freezed solidly on billet surface using bar own temperature, after bar is dry, weight
Heat preserving agent twice is smeared in overcoating；
Step 2：Heating：The bar handled well in step 1 is placed in 1060 DEG C of electric furnace and heats T minutes, wherein T=
Bar outer diameter × 0.8, the unit of bar outer diameter are mm；
Step 3：Base：The bar heated in step 2 is subjected to jumping-up in quick forging machine, make its deflection >=
50%, the bar height after jumping-up guarantee be the ring reserved 10% of subsequent roll forming deflection, punching after jumping-up is made
Circular material blank with holes；
Step 4：Blank isothermal holding：The circular material blank with holes processed in step 3 is placed in 100 DEG C of electric furnace and is protected
It comes out of the stove after warm 30min, uniformly smears heat preserving agent in blank surface, so that heat preserving agent is freezed solidly on its surface using blank own temperature,
Glass binder is smeared after blank is dry, when glass binder is moisture state, wraps up the entire outer of blank with heat-preservation cotton
Surface；
Step 5：Blank heating：The blank that step 4 is handled well, which is placed in 1060 DEG C of electric furnace, heats T minutes, wherein T
=sotck thinkness × 1.0, sotck thinkness are the wall degree of circular material blank with holes, unit mm；
Step 6：Ring rolling：The blank heated in step 5 is rolled after taking out in heating furnace, wherein when shifting
Between≤10s, the amount of feeding is 0.10-0.15mm/s when rolling, and repeat-rolling is multiple, and total rolling time is 60s, is rolled for the last time
The deflection of system with it is preceding it is primary compared with >=30%.
Using in above-mentioned processing step, by optimizing the amount of feeding, rolling time and the deflection of blank, to mill speed and
The final deformation velocity of ring is controlled, and is improved ring cracking and crystal grain problem bigger than normal in forging process, is rolled ring to improve
The mechanical property of ring afterwards；The package heat-preservation cotton outside blank is used to keep the temperature blank in blank isothermal holding, it can be effective
Fruit prevents forging from leading to rolling crack due to fast cooling in subsequent forging process.
Above description is explanation of the invention, is not intended to limit the invention, and limited range of the present invention is referring to right
It is required that within protection scope of the present invention, any type of modification can be made.
Claims (4)
1. a kind of heavy wall 718Plus alloy annular forging milling method, it is characterised in that：Its specific process step is as follows：
Step 1：Smear heat preserving agent：718Plus alloy bar is placed in heat preservation 30min in 100 DEG C -200 DEG C of electric furnace to come out of the stove,
Heat preserving agent is uniformly smeared in billet surface, so that heat preserving agent is freezed solidly on billet surface using bar own temperature, after bar is dry,
It repeats to smear heat preserving agent twice；
Step 2：Heating：The bar handled well in step 1 is placed in 1060 DEG C of electric furnace and heats T minutes, wherein T=bar
Outer diameter × 0.8, the unit of the bar outer diameter are mm；
Step 3：Base：The bar heated in step 2 is subjected to jumping-up in quick forging machine, makes its deflection >=50%, upsetting
Bar height after thick guarantees to be that the ring of subsequent roll forming reserves 10% deflection, and band orifice ring is made in punching after jumping-up
Shape blank；
Step 4：Blank isothermal holding：The circular material blank with holes processed in step 3 is placed in 100 DEG C -200 DEG C of electric furnace
It comes out of the stove after heat preservation 30min, uniformly smears heat preserving agent in blank surface, so that heat preserving agent is freezed solidly on its table using blank own temperature
Glass binder is smeared after blank is dry in face, when glass binder is moisture state, wraps up the entire of blank with heat-preservation cotton
Outer surface；
Step 5：Blank heating：The blank that step 4 is handled well, which is placed in 1060 DEG C of electric furnace, heats T minutes, wherein T=base
Expect thickness × 1.0, the sotck thinkness is the wall degree of circular material blank with holes, unit mm；
Step 6：Ring rolling：By the blank heated in step 5 from heating furnace take out after roll, wherein transfer time≤
10s, the amount of feeding is 0.10-0.15mm/s when rolling, and repeat-rolling is multiple, total rolling time≤60s, last time rolling
Deflection with it is preceding it is primary compared with >=30%.
2. a kind of heavy wall 718Plus alloy annular forging milling method as described in claim 1, it is characterised in that：The step
In rapid two, furnace temperature is set as 180 DEG C.
3. a kind of heavy wall 718Plus alloy annular forging milling method as described in claim 1, it is characterised in that：The step
In rapid four, furnace temperature is set as 180 DEG C.
4. a kind of heavy wall 718Plus alloy annular forging milling method as described in claim 1, it is characterised in that：The step
In rapid six, total rolling time is 50s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810749263.0A CN108856609A (en) | 2018-07-10 | 2018-07-10 | A kind of heavy wall 718Plus alloy annular forging milling method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810749263.0A CN108856609A (en) | 2018-07-10 | 2018-07-10 | A kind of heavy wall 718Plus alloy annular forging milling method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001129635A (en) * | 1999-11-02 | 2001-05-15 | Nsk Warner Kk | Method of manufacturing deformed ring |
| CN105397004A (en) * | 2015-12-02 | 2016-03-16 | 贵州安大航空锻造有限责任公司 | Forming method of large GH4169 alloy die forging |
| CN105921651A (en) * | 2016-06-28 | 2016-09-07 | 中国南方航空工业(集团)有限公司 | Rolling method of high-temperature alloy high cylinder thin-walled ring part |
| CN106363352A (en) * | 2016-08-31 | 2017-02-01 | 无锡派克新材料科技股份有限公司 | Manufacturing process of high-strength aluminum alloy ring forge |
-
2018
- 2018-07-10 CN CN201810749263.0A patent/CN108856609A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001129635A (en) * | 1999-11-02 | 2001-05-15 | Nsk Warner Kk | Method of manufacturing deformed ring |
| CN105397004A (en) * | 2015-12-02 | 2016-03-16 | 贵州安大航空锻造有限责任公司 | Forming method of large GH4169 alloy die forging |
| CN105921651A (en) * | 2016-06-28 | 2016-09-07 | 中国南方航空工业(集团)有限公司 | Rolling method of high-temperature alloy high cylinder thin-walled ring part |
| CN106363352A (en) * | 2016-08-31 | 2017-02-01 | 无锡派克新材料科技股份有限公司 | Manufacturing process of high-strength aluminum alloy ring forge |
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Application publication date: 20181123 |