CN105750465B - A kind of method for reducing high-temperature alloy material forging crack tendency - Google Patents
A kind of method for reducing high-temperature alloy material forging crack tendency Download PDFInfo
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- CN105750465B CN105750465B CN201610272023.7A CN201610272023A CN105750465B CN 105750465 B CN105750465 B CN 105750465B CN 201610272023 A CN201610272023 A CN 201610272023A CN 105750465 B CN105750465 B CN 105750465B
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- forging
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
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Abstract
The invention discloses a kind of methods for reducing high-temperature alloy material forging crack tendency, belong to high-temperature alloy material technical field, this method includes the following steps：Steel ingot to be forged is wrapped up with asbestos cloth first；Then the steel ingot that step (1) bandages is heated, keeps the temperature 10 16h, make steel ingot temperature uniform, then take out；The steel ingot that finally forging step (2) is taken out, during forging, the deformation amount controlling per fire time is 20% or so；Method using the present invention, the yield rate of forging are promoted to more than 60% by original 20% or so, are especially suitable for the forging of GH4049, can preferably forge and become a useful person, and deliver user and use.
Description
Technical field
The present invention relates to a kind of alloy material more particularly to high-property heat resistant steel, preparation method and its applications.
Background technology
With greatly developing for aerospace, some high temperature alloys obtain extensively as the main material of engine turbine blade
General application, and dosage increases year by year.
Among these, it is a kind of Ni-based male sportsman using more such as GH4049.GH4049 is typically chemical
Constituent, by mass percentage for：C 0.04-0.10%, Cr 9.5-11.0%, Co 14.0-16.0%, W 5.0-
6.0%th, Al 3.7-4.4%, Ti 1.4-1.8%, V 0.2-0.5%, B≤0.025%, Fe≤1.50%, Mn≤0.50%,
Si≤0.50, P≤0.10%, S≤0.10%, Bi≤0.0001%, Sn≤0.0012%, Cu≤0.07%, Sb≤0.0025,
Ce≤0.02, Pb≤0.001, surplus Ni；This high-temperature alloy material has preferable mechanical behavior under high temperature.
But this high-temperature alloy material has a feature that difficult deformation, forging are easily cracked, yield rate is very low during production,
Generally 20% or so so that production cost is very high, and larger difficulty is caused to production.
Invention content
The purpose of the present invention, which is that, provides a kind of method for reducing high-temperature alloy material forging crack tendency, in solution
State problem.
To achieve these goals, the technical solution adopted by the present invention is such：A kind of reduction high-temperature alloy material forging
The method for making tearing tendency, includes the following steps：
(1) steel ingot to be forged is wrapped up with asbestos cloth first；
(2) steel ingot that step (1) bandages is heated, keeps the temperature 10-16h at 1160 DEG C, make steel ingot temperature uniform, so
After take out；
(3) steel ingot that forging step (2) is taken out, forging 4-5 fire is secondary, and the deformation amount controlling per fire time is 15%-20%, is made
Into steel billet；
(4) by steel billet made of step (3), 1180 DEG C of reheating in furnace keeps the temperature 40-50h, then takes out；
(5) steel billet for taking out step (4), is forged, and the deformation amount controlling per fire time is 20%-25%, until forging
Cause material.
Present inventor pass through experimental results demonstrate：Since high-temperature alloy material forging range is smaller, stone is used
Cotton wrapping can reduce the heat loss in forging process；In addition, since high-temperature alloy material usually will appear Laves phases,
The presence of this phase seriously affects its Forging Plasticity, can dissolve part Laves phases using the above method, make its Forging Plasticity apparent
It improves, so as to which its forging crack tendency be greatly reduced so that yield rate greatly improves, and can reach more than 60%.
As preferred technical solution：In step (2), heat and carried out in bell furnace.
As preferred technical solution：In step (2), feeding vehicle is used during taking-up.
As preferred technical solution：In step (3), forged using 2000T quick forging machines.
As preferred technical solution：In step (3), the deflection per fire time is 20%.
Compared with prior art, the advantage of the invention is that：Using this method forging high-temperature alloy material, forging crack inclines
To there is larger improvement, the yield rate of forging is promoted to more than 60% by original 20% or so, is especially suitable for the forging of GH4049,
It can preferably forge and become a useful person, deliver user and use.
Specific embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1：
(1) steel ingot to be forged is wrapped up with asbestos cloth first；
(2) steel ingot that step (1) bandages in bell furnace is heated, keeps the temperature 10h, make steel ingot temperature uniform, so
It is taken out afterwards using feeding vehicle；
(3) steel ingot that forging step (2) is taken out, forging 4-5 fire, the deformation amount controlling per fire time is 15%, and steel is made
Base；
(4) by steel billet made of step (3), 1180 DEG C of reheating in furnace keeps the temperature 40h, then takes out；
(5) steel billet for taking out step (4), is forged, and the deformation amount controlling per fire time is 20%, until being forged into
Material；
The yield rate of the present embodiment is 62%.
Embodiment 2：
(1) steel ingot to be forged is wrapped up with asbestos cloth first；
(2) steel ingot that step (1) bandages in bell furnace is heated, keeps the temperature 16h, make steel ingot temperature uniform, so
It is taken out afterwards using feeding vehicle；
(3) steel ingot that forging step (2) is taken out, forging 4-5 fire, the deformation amount controlling per fire time is 20%, and steel is made
Base；
(4) by steel billet made of step (3), 1180 DEG C of reheating in furnace keeps the temperature 50h, then takes out；
(5) steel billet for taking out step (4), is forged, and the deformation amount controlling per fire time is 25%, until being forged into
Material；
The yield rate of the present embodiment is 68%.
Embodiment 3：
(1) steel ingot to be forged is wrapped up with asbestos cloth first；
(2) steel ingot that step (1) bandages in bell furnace is heated, keeps the temperature 15h, make steel ingot temperature uniform, so
It is taken out afterwards using feeding vehicle；
(3) steel ingot that forging step (2) is taken out, forging 4-5 fire, the deformation amount controlling per fire time is 18%, and steel is made
Base；
(4) by steel billet made of step (3), 1180 DEG C of reheating in furnace keeps the temperature 50h, then takes out；
(5) steel billet for taking out step (4), is forged, and the deformation amount controlling per fire time is 23%, until being forged into
Material；
The yield rate of the present embodiment is 65%.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (5)
- A kind of 1. method for reducing high-temperature alloy material forging crack tendency, which is characterized in that include the following steps：(1) steel ingot to be forged is wrapped up with asbestos cloth first；(2) steel ingot that step (1) bandages is heated, keeps the temperature 10-16h at 1160 DEG C, make steel ingot temperature uniform, Ran HouquGo out；(3) steel ingot that forging step (2) is taken out, forging 4-5 fire, the deformation amount controlling per fire time is 15%-20%, and steel is madeBase；(4) by steel billet made of step (3), 1180 DEG C of reheating in furnace keeps the temperature 40-50h, then takes out；(5) steel billet for taking out step (4), is forged, and the deformation amount controlling per fire time is 20%-25%, until being forged intoMaterial；The high temperature alloy is GH4049.
- 2. a kind of method for reducing high-temperature alloy material forging crack tendency according to claim 1, it is characterised in that：StepSuddenly it in (2), heats and is carried out in bell furnace.
- 3. a kind of method for reducing high-temperature alloy material forging crack tendency according to claim 1, it is characterised in that：StepSuddenly in (2), feeding vehicle is used during taking-up.
- 4. a kind of method for reducing high-temperature alloy material forging crack tendency according to claim 1, it is characterised in that：StepSuddenly it in (3), is forged using 2000T quick forging machines.
- 5. a kind of method for reducing high-temperature alloy material forging crack tendency according to claim 1, it is characterised in that：StepSuddenly in (3), the deflection per fire time is 20%.
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| CN201610272023.7A CN105750465B (en) | 2016-04-28 | 2016-04-28 | A kind of method for reducing high-temperature alloy material forging crack tendency |
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| CN201610272023.7A CN105750465B (en) | 2016-04-28 | 2016-04-28 | A kind of method for reducing high-temperature alloy material forging crack tendency |
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| CN105750465A CN105750465A (en) | 2016-07-13 |
| CN105750465B true CN105750465B (en) | 2018-06-12 |
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| CN109622834A (en) * | 2018-11-26 | 2019-04-16 | 抚顺特殊钢股份有限公司 | A kind of forging method of powder metallurgy superalloy bar |
| CN113118354B (en) * | 2021-04-19 | 2023-03-17 | 中航上大高温合金材料股份有限公司 | Forging method of GH4049 alloy bar |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332484A (en) * | 2007-06-25 | 2008-12-31 | 宝山钢铁股份有限公司 | A kind of die forging method of superalloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05177289A (en) * | 1991-12-26 | 1993-07-20 | Daido Steel Co Ltd | Heat loss prevention method in die forging |
| CN101633029A (en) * | 2009-06-05 | 2010-01-27 | 常熟市苏南特种金属保温锻造研发中心有限公司 | Method for upsetting high-temperature alloy round ingot |
| EP2659993B1 (en) * | 2010-12-28 | 2019-05-08 | Hitachi Metals, Ltd. | Closed-die forging method and method of manufacturing forged article |
| CN104826969B (en) * | 2015-05-25 | 2016-09-21 | 无锡派克新材料科技股份有限公司 | A kind of forging method of 500Kg level GH3230 high temperature alloy |
| CN105478643A (en) * | 2015-12-24 | 2016-04-13 | 中国第二重型机械集团德阳万航模锻有限责任公司 | GH864 high-temperature alloy die forging method |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332484A (en) * | 2007-06-25 | 2008-12-31 | 宝山钢铁股份有限公司 | A kind of die forging method of superalloy |
Non-Patent Citations (1)
| Title |
|---|
| 难变形高温合金的热加工;程秀峰;《特殊钢》;19810630(第2期);第55-60页 * |
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Address after: 621700 West Section of Baolun Road, Henan Industrial Park, Jiangyou City, Mianyang City, Sichuan Province Patentee after: Sichuan Liuhe Special Metal Materials Co., Ltd. Address before: 621700 West Section of Baolun Road, Henan Industrial Park, Jiangyou City, Mianyang City, Sichuan Province Patentee before: Sichuan Liuhe Forging Company Ltd. |
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