CN109261865A - A kind of quasi- β forging deformation control method of TC18 titanium alloy die forging part - Google Patents
A kind of quasi- β forging deformation control method of TC18 titanium alloy die forging part Download PDFInfo
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- CN109261865A CN109261865A CN201811153064.XA CN201811153064A CN109261865A CN 109261865 A CN109261865 A CN 109261865A CN 201811153064 A CN201811153064 A CN 201811153064A CN 109261865 A CN109261865 A CN 109261865A
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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
- B21J5/002—Hybrid process, e.g. forging following casting
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
This application discloses a kind of quasi- β forging deformation control methods of TC18 titanium alloy die forging part, two fire are not allowed more than in the quasi- β forging of TC18 titanium alloy die forging part, heating method is as follows: blank is heated to 20 DEG C~40 DEG C of beta transformation point temperature or less in resistance furnace first, soaking time=heating coefficient × blank maximum gauge, according to blank maximum gauge, heating coefficient is chosen between 0.6~0.8；Then it is kept the temperature after being warming up to 10 DEG C~30 DEG C of beta transformation point temperature or more with furnace, soaking time=heating coefficient × blank maximum gauge, according to blank maximum gauge, heating coefficient is chosen between 0.2~0.5, heating 20 DEG C~40 DEG C progress below beta transformation point temperature of fire time, fire time must not be more than two fire after quasi- β forging.
Description
Technical field
The present invention relates to a kind of methods of the quasi- β forging deformation control of TC18 titanium alloy die forging part, are especially directed at β forging times
And the method that heating method is controlled.
Background technique
TC18 titanium alloy is a kind of high-intensitive, high tenacity near β titanium alloy material, nominal composition Ti-5Al-
5Mo-5V-1Cr-1Fe, alloying level is high, and intensity with higher and good integrated performance index are suitable for manufacture
Various large-scale bearing members in airframe and landing gear structure, are usually supplied with forging.With the continuous hair of aircraft industry
Exhibition requires to also improve to the fracture toughness of aircraft titanium alloy forging.TC18 titanium alloy forging fracture toughness is to microscopic structure
It is more sensitive, and microscopic structure is affected by forging technology, therefore obtains ideal tissue by research forging technology
It is very necessary.TC18 titanium alloy forging now mostly uses quasi-beta forging process, and this technique is to determine forging performance, structural homogenity
Key link, provide Process ba- sis for high tough, the long-life aircraft structure manufacture.Quasi-beta forging process is in β phase transformation
Or more forged after heating, if heating fire time and heating means control it is proper can obtain have compared with high-fracture toughness and
The mesh basket tissue of preferable comprehensive performance.Currently, in the actual production process, fire time is excessive or heating method is improper is easy to cause change
Shape is excessive to make mesh basket tissue be destroyed, and causes the fracture toughness of alloy lower, bright band tissue occurs and happen occasionally, therefore
Fire time and heating temperature in quasi- β forging process are studied to control deformation to guarantee that mesh basket tissue is very necessary.
Summary of the invention
In order to obtain the mesh basket tissue having compared with high-fracture toughness and preferable comprehensive performance, the present invention provides a kind of TC18
The method that deformation is controlled by control fire time and heating temperature when the quasi- β of titanium alloy die forging part is forged.
A kind of method of the quasi- β forging deformation control of TC18 titanium alloy die forging part, includes the following steps:
1 blank is heated to 20 DEG C~40 DEG C of beta transformation point temperature or less in resistance furnace first, soaking time=heating coefficient
× blank maximum gauge, according to blank maximum gauge, heating coefficient is chosen between 0.6~0.8；
2 be warming up to 10 DEG C~30 DEG C of beta transformation point temperature or more with furnace after keep the temperature, soaking time=heating coefficient × blank is most
Big thickness, according to blank maximum gauge, heating coefficient is chosen between 0.2~0.5；
3 carry out quasi- β forging, using air-cooled after forging；
4 when deforming inadequate, then carries out the quasi- β forging of fire time, and repeat the above steps 1-3；
5 when needing shaping, can carry out die forging again, heating temperature need below beta transformation point temperature 20 DEG C~40 DEG C into
Row, using air-cooled, fire time not more than two fire after forging.
The invention has the advantages that can control quasi- β forging deformation amount to obtain with compared with high-fracture toughness and preferably
The mesh basket tissue of comprehensive performance.
Detailed description of the invention
Fig. 1 mesh basket tissue
There is the unqualified tissue of bright band in Fig. 2
Specific embodiment
A kind of method of the quasi- β forging deformation control of TC18 titanium alloy die forging part:
1) blank is heated to 20 DEG C~40 DEG C of beta transformation point temperature or less in resistance furnace first, soaking time (min)=add
Hot coefficient × blank maximum gauge (mm), according to blank maximum gauge, heating coefficient is chosen between 0.6~0.8；
2) it is kept the temperature after being warming up to 10 DEG C~30 DEG C of beta transformation point temperature or more with furnace, soaking time (min)=heating coefficient ×
Blank maximum gauge (mm), according to blank maximum gauge, heating coefficient is chosen between 0.2~0.5；
3) quasi- β forging is carried out, using air-cooled after forging；
4) when deforming inadequate, then the quasi- β forging of fire time is carried out, repeats the above steps 1) -3)；
5) when needing shaping, die forging can be carried out again, heating temperature need below beta transformation point temperature 20 DEG C~40 DEG C into
Row, using air-cooled, fire time not more than two fire after forging.
Fig. 1 is the mesh basket tissue obtained using above-mentioned quasi- β forging method；Fig. 2, which is that deformation is excessive, causes mesh basket to destroy to be formed
The unqualified tissue of bright band.
Claims (1)
1. a kind of method of the quasi- β forging deformation control of TC18 titanium alloy die forging part, it is characterised in that include the following steps:
1-1 blank is heated to 20 DEG C~40 DEG C of beta transformation point temperature or less in resistance furnace first, soaking time=heating coefficient
× blank maximum gauge, according to blank maximum gauge, heating coefficient is chosen between 0.6~0.8；
1-2 is kept the temperature after being warming up to 10 DEG C~30 DEG C of beta transformation point temperature or more with furnace, and soaking time=heating coefficient × blank is most
Big thickness, according to blank maximum gauge, heating coefficient is chosen between 0.2~0.5；
1-3 carries out quasi- β forging, using air-cooled after forging；
1-4 is when deforming inadequate, then carries out the quasi- β forging of fire time, and repeat the above steps 1-3；
1-5 can carry out die forging when needing shaping again, heating temperature need below beta transformation point temperature 20 DEG C~40 DEG C into
Row, using air-cooled, fire time not more than two fire after forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811153064.XA CN109261865A (en) | 2018-09-29 | 2018-09-29 | A kind of quasi- β forging deformation control method of TC18 titanium alloy die forging part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811153064.XA CN109261865A (en) | 2018-09-29 | 2018-09-29 | A kind of quasi- β forging deformation control method of TC18 titanium alloy die forging part |
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| Publication Number | Publication Date |
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| CN109261865A true CN109261865A (en) | 2019-01-25 |
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| CN201811153064.XA Pending CN109261865A (en) | 2018-09-29 | 2018-09-29 | A kind of quasi- β forging deformation control method of TC18 titanium alloy die forging part |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865787A (en) * | 2019-02-15 | 2019-06-11 | 湖南金天钛业科技有限公司 | A kind of forging method obtaining uniform mesh basket tissue T C18 forging |
| CN112355214A (en) * | 2020-10-20 | 2021-02-12 | 湖南金天钛业科技有限公司 | Preparation method of large-size forging for heavy rocket binding support |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403622A (en) * | 2001-09-04 | 2003-03-19 | 北京航空材料研究院 | Titanium alloy quasi-beta forging process |
| CN103071744A (en) * | 2011-12-16 | 2013-05-01 | 陕西宏远航空锻造有限责任公司 | Forging method for improving quasi-beta forging uniformity of slender rod-like TC18 titanium alloy forged piece |
| CN104480416A (en) * | 2014-11-29 | 2015-04-01 | 无锡透平叶片有限公司 | Cross-phase region forging process of TC18 titanium alloy on screw press |
| CN105483586A (en) * | 2015-12-11 | 2016-04-13 | 陕西宏远航空锻造有限责任公司 | Forging method for improving TC18 titanium alloy structure property |
-
2018
- 2018-09-29 CN CN201811153064.XA patent/CN109261865A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403622A (en) * | 2001-09-04 | 2003-03-19 | 北京航空材料研究院 | Titanium alloy quasi-beta forging process |
| CN103071744A (en) * | 2011-12-16 | 2013-05-01 | 陕西宏远航空锻造有限责任公司 | Forging method for improving quasi-beta forging uniformity of slender rod-like TC18 titanium alloy forged piece |
| CN104480416A (en) * | 2014-11-29 | 2015-04-01 | 无锡透平叶片有限公司 | Cross-phase region forging process of TC18 titanium alloy on screw press |
| CN105483586A (en) * | 2015-12-11 | 2016-04-13 | 陕西宏远航空锻造有限责任公司 | Forging method for improving TC18 titanium alloy structure property |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865787A (en) * | 2019-02-15 | 2019-06-11 | 湖南金天钛业科技有限公司 | A kind of forging method obtaining uniform mesh basket tissue T C18 forging |
| CN112355214A (en) * | 2020-10-20 | 2021-02-12 | 湖南金天钛业科技有限公司 | Preparation method of large-size forging for heavy rocket binding support |
| CN112355214B (en) * | 2020-10-20 | 2022-06-10 | 湖南金天钛业科技有限公司 | Preparation method of large-size forging for heavy rocket binding support |
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