CN103668027A - Quasi beta forging process for TC25 titanium alloy - Google Patents

Quasi beta forging process for TC25 titanium alloy Download PDF

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Publication number
CN103668027A
CN103668027A CN201310679705.6A CN201310679705A CN103668027A CN 103668027 A CN103668027 A CN 103668027A CN 201310679705 A CN201310679705 A CN 201310679705A CN 103668027 A CN103668027 A CN 103668027A
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China
Prior art keywords
forging
heating
temperature
blank
die
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Pending
Application number
CN201310679705.6A
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Chinese (zh)
Inventor
刘铭理
李晓婷
仲惟光
魏丽
黄继凤
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Wuxi Turbine Blade Co Ltd
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Wuxi Turbine Blade Co Ltd
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Publication date
Application filed by Wuxi Turbine Blade Co Ltd filed Critical Wuxi Turbine Blade Co Ltd
Priority to CN201310679705.6A priority Critical patent/CN103668027A/en
Publication of CN103668027A publication Critical patent/CN103668027A/en
Pending legal-status Critical Current

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Abstract

The invention provides a forging technology. Through the adoption of the technology, the purposes that a TC25 alloy forged piece can be produced on a high power screw press, and the mechanical property, the metallographic structure and the ultrasonic wave of the forged piece can satisfy the standard requirements of a certain type of engine made of the TC25 alloy can be achieved. The technology comprises the following processing steps: firstly blanking, then manufacturing blanks, heating the manufactured blanks before forging, putting the blanks heated before forging in a die for die forging, and finally performing heat treatment on the forged piece molded through forging so as to obtain the TC25 alloy. The technology is characterized in that the high power screw press is adopted to perform die forging on the blanks heated before forging.

Description

A kind of quasi-beta forging process of TC25 titanium alloy
Technical field
The present invention relates to the forging manufacture field of aircraft engine wheel disc forging, be specially a kind of quasi-beta forging process of TC25 titanium alloy.
Background technology
TC25 alloy belongs to martensite type alpha+beta two-phase distortion thermal strength titanium alloy, and this alloy has good heat resistance and thermotolerance.Though this alloy has adopted the technique of isothermal forging to manufacture experimently production on oil press, this kind of explained hereafter cost is larger, and the production cycle is long, but domesticly not yet has a precedent of producing this alloy forged piece on high power screw press.
Summary of the invention
For the problems referred to above, the invention provides a kind of quasi-beta forging process of TC25 titanium alloy, can realize the production of TC25 alloy forged piece on high power screw press, guarantee that mechanical property, metallographic structure and the ultrasonic wave of forging all can full scale alignment request.
Its technical scheme is such, it comprises following procedure of processing, first blanking, then base, again the blank making is forged to front heating, blank after heating before described forging is put into mould and carry out die forging, finally the forging of forging molding is heat-treated, it is characterized in that: it adopts high power screw press to carry out die forging to the blank through forging after front heating.
Its further feature exists:
Described blank forge before heating comprise middle temperature heating and heat, the temperature that described middle temperature heats is T β-30 ℃~T β-10 ℃, heating coefficient 0.6~1.0min/mm that described middle temperature heats;
The temperature of described heat is T β-10 ℃~T β+20 ℃, and heating coefficient is 0.4 min/mm~0.6min/mm, and described T β is the phase point temperature of TC25 alloy;
In described die forging process, forging deflection is 40%~70%, forges hammer time 2~4 hammers, and transfer time≤60s, controls hammering time slot≤60s, air cooling or water-cooled after forging.
Compare with existing TC25 titanium alloy forging moulding process, beneficial effect of the present invention is: it adopts high power screw press to realize die-forging forming to TC25 titanium alloy forging, because high power screw press hammering speed is fast, thereby adopt high power screw press to carry out die forging can to make forging obtain comparatively excellent structural state and mechanical property, and meet the standard performance requirement of this alloy engine; And by controlling Heating temperature and the die forging deflection of the front blank of die forging, can further guarantee that forging obtains comparatively excellent structural state.
Accompanying drawing explanation
Fig. 1 is a kind of TC25 alloy wheel disc forging structural representation in embodiment.
Embodiment
A kind of TC25 alloy wheel disc forging shown in working diagram 1 of take is below example, specifically describes the implementation process of technique of the present invention:
Embodiment mono-:
Process a kind of TC25 alloy wheel disc forging, it comprises following processing step:
(1) blanking: bar seamed edge is polished into fillet;
(2) base: bar is heated and adopt flat-die forging mode to carry out jumping-up processing to bar, then at blank surface spraying Ti-1 protective material;
(3) blank heats before forging: blank enters middle temperature heating, and middle temperature Heating temperature is T β-30 ℃, middle temperature heating coefficient 0.8min/mm; Then blank enters heat, and heat temperature is T β+20 ℃, and heat coefficient is that heating coefficient is 0.5min/mm;
(4) die forging: forging mold is assemblied in to high power screw press, the blank after heating before forging is put into forging mold, by high power screw press, blank is carried out to die-forging forming; In die forging process, forging deflection is 70%, and transfer time, 40 ± 3s, forged hammer time 2 hammers, hammering gap 45 ± 3s, air cooling after forging;
(5) thermal treatment.
Embodiment bis-:
Process a kind of TC25 alloy wheel disc forging, it comprises following processing step:
(1) blanking: bar seamed edge is polished into fillet;
(2) base: bar is heated and adopt flat-die forging mode to carry out jumping-up processing to bar, then at blank surface spraying Ti-1 protective material;
(3) blank heats before forging: blank enters middle temperature heating, and middle temperature Heating temperature is T β-10 ℃, middle temperature heating coefficient 0.6min/mm; Then blank enters heat, and heat temperature is T β+5 ℃, and heat coefficient is that heating coefficient is 0.6min/mm;
(4) die forging: forging mold is assemblied in to high power screw press, the blank after heating before forging is put into forging mold, by high power screw press, blank is carried out to die-forging forming; In die forging process, forging deflection is 55%, forges hammer time 3 hammers, and transfer time, 60 ± 3s, controlled hammering gap 50 ± 3s, water-cooled after forging.
Embodiment tri-:
Process a kind of TC25 alloy wheel disc forging, it comprises following processing step:
(1) blanking: bar seamed edge is polished into fillet;
(2) base: bar is heated and adopt flat-die forging mode to carry out jumping-up processing to bar, then at blank surface spraying Ti-1 protective material;
(3) blank heats before forging: blank enters middle temperature heating, and middle temperature Heating temperature is T β-20 ℃, middle temperature heating coefficient 1.0min/mm; Then blank enters heat, and heat temperature is T β-10 ℃, and heat coefficient is that heating coefficient is 0.4 min/mm;
(4) die forging: forging mold is assemblied in to high power screw press, the blank after heating before forging is put into forging mold, by high power screw press, blank is carried out to die-forging forming; In die forging process, forging deflection is 40%, forges hammer time 4 hammers, and transfer time, 50 ± 3s, controlled hammering gap 60 ± 3s, air cooling or water-cooled after forging.

Claims (4)

1. the forging process of a TC25 titanium alloy, it comprises following procedure of processing, first blanking, then base, again the blank making is forged to front heating, blank after heating before described forging is put into mould and carry out die forging, finally the forging of forging molding is heat-treated, it is characterized in that: it adopts high power screw press to carry out die forging to the blank through forging after front heating.
2. the forging process of a kind of TC25 titanium alloy according to claim 1, it is characterized in that: described blank is forged front heating and comprised middle temperature heating and heat, the temperature of described middle temperature heating is T β-30 ℃~T β-10 ℃, heating coefficient 0.6~1.0min/mm that described middle temperature heats.
3. the forging process of a kind of TC25 titanium alloy according to claim 2, it is characterized in that: the temperature of described heat is T β-10 ℃~T β+20 ℃, heating coefficient is 0.4 min/mm~0.6min/mm, and described T β is the phase point temperature of TC25 alloy.
4. the forging process of a kind of TC25 titanium alloy according to claim 3, it is characterized in that: in described die forging process, forging deflection is 40%~70%, forge hammer time 2~4 hammers, transfer time≤60s, control hammering time slot≤60s, air cooling or water-cooled after forging.
CN201310679705.6A 2013-12-15 2013-12-15 Quasi beta forging process for TC25 titanium alloy Pending CN103668027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106607540A (en) * 2015-10-27 2017-05-03 陕西宏远航空锻造有限责任公司 Isothermal beta forging method for TC17 titanium alloy blade
CN106694770A (en) * 2016-12-15 2017-05-24 陕西宏远航空锻造有限责任公司 Forging method of TC21 titanium alloy
CN106862452A (en) * 2015-12-14 2017-06-20 陕西宏远航空锻造有限责任公司 A kind of isothermal β forging methods of TC17 titanium alloys blisk
CN107214207A (en) * 2017-05-22 2017-09-29 西部超导材料科技股份有限公司 A kind of processing method of high uniform beta titanium alloy bar
CN110076280A (en) * 2019-05-29 2019-08-02 遵义航天新力精密铸锻有限公司 A kind of aviation aircraft empennage processing technology
CN111235505A (en) * 2020-03-19 2020-06-05 中国科学院金属研究所 Preparation process of high-strength and high-toughness TC25G titanium alloy ring piece
CN111235506A (en) * 2020-03-19 2020-06-05 中国科学院金属研究所 Thermal processing technology of TC25G titanium alloy forging
CN111390081A (en) * 2020-03-19 2020-07-10 中国科学院金属研究所 Preparation process of TC25G titanium alloy forging with high creep resistance and high fracture toughness

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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

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WO2012044204A1 (en) * 2010-09-27 2012-04-05 Открытое Акционерное Общество "Корпорация Всмпо-Ависма" METHOD FOR MANUFACTURING DEFORMED ARTICLES FROM PSEUDO-β-TITANIUM ALLOYS
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106607540A (en) * 2015-10-27 2017-05-03 陕西宏远航空锻造有限责任公司 Isothermal beta forging method for TC17 titanium alloy blade
CN106862452A (en) * 2015-12-14 2017-06-20 陕西宏远航空锻造有限责任公司 A kind of isothermal β forging methods of TC17 titanium alloys blisk
CN106694770A (en) * 2016-12-15 2017-05-24 陕西宏远航空锻造有限责任公司 Forging method of TC21 titanium alloy
CN107214207A (en) * 2017-05-22 2017-09-29 西部超导材料科技股份有限公司 A kind of processing method of high uniform beta titanium alloy bar
CN110076280A (en) * 2019-05-29 2019-08-02 遵义航天新力精密铸锻有限公司 A kind of aviation aircraft empennage processing technology
CN111235505A (en) * 2020-03-19 2020-06-05 中国科学院金属研究所 Preparation process of high-strength and high-toughness TC25G titanium alloy ring piece
CN111235506A (en) * 2020-03-19 2020-06-05 中国科学院金属研究所 Thermal processing technology of TC25G titanium alloy forging
CN111390081A (en) * 2020-03-19 2020-07-10 中国科学院金属研究所 Preparation process of TC25G titanium alloy forging with high creep resistance and high fracture toughness
CN111235506B (en) * 2020-03-19 2022-02-15 中国科学院金属研究所 Thermal processing technology of TC25G titanium alloy forging
CN111235505B (en) * 2020-03-19 2022-02-18 中国科学院金属研究所 Preparation process of high-strength and high-toughness TC25G titanium alloy ring piece

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