CN107900129A - A kind of processing method of improvement TA5 A titanium alloy wide medium-thick plate templates - Google Patents
A kind of processing method of improvement TA5 A titanium alloy wide medium-thick plate templates Download PDFInfo
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- CN107900129A CN107900129A CN201711106046.1A CN201711106046A CN107900129A CN 107900129 A CN107900129 A CN 107900129A CN 201711106046 A CN201711106046 A CN 201711106046A CN 107900129 A CN107900129 A CN 107900129A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
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- 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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Abstract
The invention discloses a kind of processing method of improvement TA5 A titanium alloy wide medium-thick plate templates, this method comprises the following steps：First, by TA5 A titanium alloy slabs heats forged at a temperature of more than transformation temperature, 3 fire time hot rollings are then carried out, then once aligned；Step 2: the TA5 A titanium alloy slabs after once aligning to be carried out to heat treatment and secondary aligning successively, the big specification medium-thick plate of TA5 A titanium alloy wides of unevenness≤8mm/m is obtained；The size (thickness × width x length) of the TA5 A titanium alloy wide medium-thick plates is (10mm~30mm) × (2000mm~2500mm) × (5000mm~7000mm).The present invention by high temperature it is great-deformation hot-rolled and commutation hot rolling be combined, reasonable distribution roll reduction and rolling pass, improve rolling efficiency, reduce the anisotropy of slab, so as to improve the deformation non-uniform phenomenon during slab rolling, the unevenness of slab is effectively reduced, finally obtains the good TA5 A titanium alloy wide medium-thick plates of template.
Description
Technical field
The invention belongs to technical field of board processing, and in particular to one kind improves TA5-A titanium alloy wide medium-thick plate plates
The processing method of type.
Background technology
Titanium alloy has good physical property, machining property and sea water corrosion resistant, is a kind of preferable warship
Marine metal structural material.Russia, the U.S. and the research of Japan and other countries marine titanium alloy and actual application level belong to the world
Forefront, and possess the special purpose ship of oneself titanium alloy system, such as п T-XM series, Ti-Mo-Ni series and Ti-Al-V series.
With the development of shipping industry technology and the development of aircraft carrier manufacturing planning, China naval vessel field to the demand of titanium material increasingly
Increase.China's Titanium Alloy for Ship amount is relatively external less at present, is mainly used in submarine and underawater ordnance, the typical trade mark has
TA5-A, Ti31, Ti80 and Ti75.
Ship is a kind of full alpha titanium alloy with TA5-A titanium alloys, has moderate strength, good welding performance and resistance to sea
Aqueous corrosion performance, applied to the primary structure member of underawater ordnance, bolt, axis and pressure hull.With the development of shipbuilding industry, institute
The TA5-A titanium alloys medium-thick plate of demand gradually develops to the big specification of wide cut.Deformation of the TA5-A titanium alloys in hot procedure
Drag is larger, and to rolling temperature is very sensitive, Applicable temperature scope is relatively narrow, therefore milling method and rolling temperature can influence
The template of TA5-A titanium alloy plates.When finished width is less than 2000mm, conventional milling method is to TA5-A titanium alloy plates
Template have well control, but when production size for (10mm~30mm) × (2000mm~2200mm) × (5000mm~
During TA5-A titanium alloy wide cut deals 7000mm), the template shadow of milling method and rolling temperature to TA5-A titanium alloy plates
Sound is larger, and conventional milling method has not been suitable for the preparation of TA5-A titanium alloy wide medium-thick plates.
The content of the invention
The technical problems to be solved by the invention are in view of the above shortcomings of the prior art, there is provided one kind improves TA5-
The processing method of A titanium alloy wide medium-thick plate templates.This method first adds TA5-A titanium alloys at a temperature of more than transformation temperature
Warm and hot forging, then using time different hot rolling technologies of 3 fire, the high temperature large deformation rolling that rolls and commutate is combined, reasonable distribution
Roll reduction and rolling pass, improve rolling efficiency, reduce the anisotropy of slab, so as to improve slab rolling mistake
Deformation non-uniform phenomenon in journey, finally obtains the TA5-A titanium alloy wide medium-thick plates of unevenness≤8mm/m.
In order to solve the above technical problems, the technical solution adopted by the present invention is：One kind improves thick in TA5-A titanium alloy wides
The processing method of plate template, it is characterised in that this method comprises the following steps：
Step 1: by TA5-A titanium alloy slabs at a temperature of more than transformation temperature heats forged, then carry out 3 fire time heat
Roll, then once aligned；The thickness of TA5-A titanium alloy slabs is 90mm~200mm after the heats forged；3 fire
The finishing temperature of hot rolling is not less than 700 DEG C；
The process of wherein the 1st fire time hot rolling is：TA5-A titanium alloy slabs are subjected to 5~7 passage hot rollings, it is then online to mend
Warm 30min~40min, then carry out 5~7 passage hot rollings；The overall reduction of 1st fire time hot rolling is 50%~55%；1st fire time heat
The beginning rolled rolls temperature for 950 DEG C~980 DEG C；
The process of 2nd fire time hot rolling is：TA5-A titanium alloy slabs after the 1st fire time hot rolling are cut, then will
TA5-A titanium alloy slabs after cutting are rotated by 90 ° relative to the 1st fire time hot rolling direction, then carry out 8~12 passage hot rollings；2nd fire
The overall reduction of secondary hot rolling is 50%~55%；The beginning of 2nd fire time hot rolling rolls temperature for 940 DEG C~960 DEG C；
The process of 3rd fire time hot rolling is：TA5-A titanium alloy slabs after the 2nd fire time hot rolling are subjected to 6~8 passages heat
Roll；The overall reduction of 3rd fire time hot rolling is 40%~45%；The beginning of 3rd fire time hot rolling rolls temperature for 920 DEG C~940 DEG C；
Rectified Step 2: the TA5-A titanium alloy slabs in step 1 after once aligning to be carried out to heat treatment successively with secondary
Directly, the TA5-A titanium alloy wide medium-thick plates of unevenness≤8mm/m are obtained；The ruler of the TA5-A titanium alloy wides medium-thick plate
Very little is (10mm~30mm) × (2000mm~2500mm) × (5000mm~7000mm).
A kind of processing method of above-mentioned improvement TA5-A titanium alloy wides medium-thick plate template, it is characterised in that step 1
Described in the finishing temperatures of 3 fire time hot rollings be 700 DEG C~800 DEG C.
A kind of processing method of above-mentioned improvement TA5-A titanium alloy wides medium-thick plate template, it is characterised in that step 2
Described in the temperature that is heat-treated be 800 DEG C~850 DEG C, the time is 60min~90min.
The present invention has the following advantages compared with prior art：
1st, the present invention using 3 fire time different parameters hot rolling technology, after when the 1st fire time hot rolling, makes heats forged using high temperature
TA5-A titanium alloy slabs occur moderate finite deformation, not only reduce rolling pass, improve rolling efficiency, also effectively reduce into
Face checking phenomenon during shape, improves product quality；Take commutation to roll during the 2nd fire time hot rolling, reduce slab
Anisotropy, so that the deformation non-uniform phenomenon during improving slab rolling；Reasonable distribution rolling road during the 3rd fire time hot rolling
It is secondary, the unevenness of slab is effectively reduced, finally obtains the good TA5-A titanium alloy wide medium-thick plates of template.
2nd, the present invention control hot rolling finishing temperature be not less than 700 DEG C, it is hot rolled after TA5-A titanium alloy slabs using eventually
Roll waste heat once to be aligned, not only effectively eliminate the residual stress of hot rolling generation, but also greatly reduce aligning drag, carry
The high efficiency and quality of aligning, saves the energy.
3rd, present invention employs the method for thermal straightening twice before and after heat treatment, make the cooling velocity of slab slack-off, after aligning
The residual stress of slab is smaller and is evenly distributed, and slab is not flexible and deforms, and avoids TA5-A titanium alloy wide medium-thick plates
The flatness defect produced in the operation of rolling.
4th, the present invention can be effectively improved size for (10mm~30mm) × (2000mm~2500mm) × (5000mm~
The template of TA5-A titanium alloy wide medium-thick plates 7000mm), finally obtains the TA5-A titanium alloys production of unevenness≤8mm/m
Product, substantially reduce the production cycle, improve production efficiency.
5th, the method for the present invention is simple, easy to operate, easily realizes industrialized production.
Technical scheme is described in further detail below by embodiment.
Embodiment
Embodiment 1
The present embodiment comprises the following steps：
Step 1: TA5-A titanium alloy slabs are carried out heats forged at 1050 DEG C, 3 fire time hot rollings are then carried out, then carry out
Once align；The thickness of TA5-A titanium alloy slabs is 200mm after the heats forged；
The process of wherein the 1st fire time hot rolling is：TA5-A titanium alloy slabs are subjected to 5 passage hot rollings, obtaining thickness is
The TA5-A titanium alloy slabs of 151mm, then mend temperature 30min online, then carry out 5 passage hot rollings, and it is 100mm's to obtain thickness
TA5-A titanium alloy slabs；The overall reduction of 1st fire time hot rolling is 50%；It is 950 DEG C that the beginning of 1st fire time hot rolling, which rolls temperature, finish to gauge
Temperature is 800 DEG C；
The process of 2nd fire time hot rolling is：TA5-A titanium alloy slabs after the 1st fire time hot rolling are cut, then will
TA5-A titanium alloy slabs after cutting are rotated by 90 ° relative to the 1st fire time hot rolling direction, then carry out 8 passage hot rollings；2nd fire time heat
The overall reduction rolled is 50%；The beginning of 2nd fire time hot rolling rolls temperature for 940 DEG C, and finishing temperature is 750 DEG C；
The process of the 3rd fire time hot rolling is：TA5-A titanium alloy slabs after the 2nd fire time hot rolling are subjected to 8 passages heat
Roll；The overall reduction of the 3rd fire time hot rolling is 40%；It is 920 DEG C that the beginning of the 3rd fire time hot rolling, which rolls temperature, finishing temperature
For 700 DEG C；
Step 2: the TA5-A titanium alloy slabs in step 1 after once aligning are heat-treated 60min at 850 DEG C, then
Secondary aligning is carried out, obtains the TA5-A titanium alloy wide medium-thick plates that unevenness is 5mm/m；In the TA5-A titanium alloy wides
The size of heavy-gauge sheeting is 30mm × 2500mm × 7000mm (thickness × width x length).
Embodiment 2
The present embodiment comprises the following steps：
Step 1: TA5-A titanium alloy slabs are carried out heats forged at 1030 DEG C, 3 fire time hot rollings are then carried out, then carry out
Once align；The thickness of TA5-A titanium alloy slabs is 90mm after the heats forged；
The process of wherein the 1st fire time hot rolling is：TA5-A titanium alloy slabs are subjected to 7 passage hot rollings, obtaining thickness is
The TA5-A titanium alloy slabs of 60mm, then mend temperature 40min online, then carry out 7 passage hot rollings, and it is 40.43mm's to obtain thickness
TA5-A titanium alloy slabs；The overall reduction of 1st fire time hot rolling is 55%；It is 980 DEG C that the beginning of 1st fire time hot rolling, which rolls temperature, finish to gauge
Temperature is 799 DEG C；
The process of 2nd fire time hot rolling is：TA5-A titanium alloy slabs after the 1st fire time hot rolling are cut, then will
TA5-A titanium alloy slabs after cutting are rotated by 90 ° relative to the 1st fire time hot rolling direction, then carry out 12 passage hot rollings；2nd fire
The overall reduction of hot rolling is 55%；The beginning of 2nd fire time hot rolling rolls temperature for 960 DEG C, and finishing temperature is 800 DEG C；
The process of the 3rd fire time hot rolling is：TA5-A titanium alloy slabs after the 2nd fire time hot rolling are subjected to 8 passages heat
Roll；The overall reduction of the 3rd fire time hot rolling is 45%；It is 940 DEG C that the beginning of the 3rd fire time hot rolling, which rolls temperature, finishing temperature
For 700 DEG C；
Step 2: the TA5-A titanium alloy slabs in step 1 after once aligning are heat-treated 90min at 800 DEG C, then
Secondary aligning is carried out, obtains the TA5-A titanium alloy wide medium-thick plates that unevenness is 8mm/m；In the TA5-A titanium alloy wides
The size of heavy-gauge sheeting is 10mm × 2000mm × 5000mm (thickness × width x length).
Embodiment 3
The present embodiment comprises the following steps：
Step 1: TA5-A titanium alloy slabs are carried out heats forged at 1020 DEG C, 3 fire time hot rollings are then carried out, then carry out
Once align；The thickness of TA5-A titanium alloy slabs is 168mm after the heats forged；
The process of wherein the 1st fire time hot rolling is：TA5-A titanium alloy slabs are subjected to 6 passage hot rollings, obtaining thickness is
The TA5-A titanium alloy slabs of 120mm, then mend temperature 35min online, then carry out 6 passage hot rollings, and it is 90.85mm's to obtain thickness
TA5-A titanium alloy slabs；The overall reduction of 1st fire time hot rolling is 54%；It is 960 DEG C that the beginning of 1st fire time hot rolling, which rolls temperature, finish to gauge
Temperature is 806 DEG C；
The process of 2nd fire time hot rolling is：TA5-A titanium alloy slabs after the 1st fire time hot rolling are cut, then will
TA5-A titanium alloy slabs after cutting are rotated by 90 ° relative to the 1st fire time hot rolling direction, then carry out 10 passage hot rollings；2nd fire
The overall reduction of hot rolling is 53%；The beginning of 2nd fire time hot rolling rolls temperature for 950 DEG C, and finishing temperature is 790 DEG C；
The process of the 3rd fire time hot rolling is：TA5-A titanium alloy slabs after the 2nd fire time hot rolling are subjected to 7 passages heat
Roll；The overall reduction of the 3rd fire time hot rolling is 44%；It is 930 DEG C that the beginning of the 3rd fire time hot rolling, which rolls temperature, finishing temperature
For 745 DEG C；
Step 2: the TA5-A titanium alloy slabs in step 1 after once aligning are heat-treated 70min at 830 DEG C, then
Secondary aligning is carried out, obtains the TA5-A titanium alloy wide medium-thick plates that unevenness is 6mm/m；In the TA5-A titanium alloy wides
The size of heavy-gauge sheeting is 20mm × 2200mm × 6000mm (thickness × width x length).
The above, is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions.It is every according to invention skill
Any simple modification, change and equivalence change that art substantially makees above example, still fall within technical solution of the present invention
Protection domain in.
Claims (3)
1. a kind of processing method of improvement TA5-A titanium alloy wide medium-thick plate templates, it is characterised in that this method includes following
Step：
Step 1: by TA5-A titanium alloy slabs at a temperature of more than transformation temperature heats forged, then carry out 3 fire time hot rollings, then
Once aligned；The thickness of TA5-A titanium alloy slabs is 90mm~200mm after the heats forged；The 3 fire time hot rolling
Finishing temperature is not less than 700 DEG C；
Wherein, the process of the 1st fire time hot rolling is：TA5-A titanium alloy slabs are subjected to 5~7 passage hot rollings, it is then online to mend temperature
30min~40min, then carry out 5~7 passage hot rollings；The overall reduction of 1st fire time hot rolling is 50%~55%；1st fire time hot rolling
Beginning roll temperature for 950 DEG C~980 DEG C；
The process of 2nd fire time hot rolling is：TA5-A titanium alloy slabs after the 1st fire time hot rolling are cut, then will cutting
TA5-A titanium alloy slabs afterwards are rotated by 90 ° relative to the 1st fire time hot rolling direction, then carry out 8~12 passage hot rollings；2nd fire time heat
The overall reduction rolled is 50%~55%；The beginning of 2nd fire time hot rolling rolls temperature for 940 DEG C~960 DEG C；
The process of 3rd fire time hot rolling is：TA5-A titanium alloy slabs after the 2nd fire time hot rolling are subjected to 6~8 passage hot rollings；The
The overall reduction of 3 fire time hot rollings is 40%~45%；The beginning of 3rd fire time hot rolling rolls temperature for 920 DEG C~940 DEG C；
Step 2: the TA5-A titanium alloy slabs in step 1 after once aligning to be carried out to heat treatment and secondary aligning successively, obtain
To the TA5-A titanium alloy wide medium-thick plates of unevenness≤8mm/m；The size of the TA5-A titanium alloy wides medium-thick plate is
(10mm~30mm) × (2000mm~2500mm) × (5000mm~7000mm).
2. a kind of processing method of improvement TA5-A titanium alloy wide medium-thick plate templates according to claim 1, its feature
It is, the finishing temperature of 3 fire time hot rollings is 700 DEG C~800 DEG C described in step 1.
3. a kind of processing method of improvement TA5-A titanium alloy wide medium-thick plate templates according to claim 1, its feature
It is, the temperature being heat-treated described in step 2 is 800 DEG C~850 DEG C, and the time is 60min~90min.
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Cited By (4)
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| CN110860577A (en) * | 2019-11-26 | 2020-03-06 | 湖南湘投金天钛金属股份有限公司 | Short-process preparation method of TA5 titanium alloy wide medium plate |
| CN111441020A (en) * | 2020-04-30 | 2020-07-24 | 西安建筑科技大学 | Method for preparing TC4 titanium alloy sputtering target material at low cost |
| CN113351814A (en) * | 2021-04-29 | 2021-09-07 | 洛阳双瑞精铸钛业有限公司 | Preparation method of TA5-A titanium alloy medium plate |
| CN114226456A (en) * | 2021-12-16 | 2022-03-25 | 西部钛业有限责任公司 | Rolling method of TA12A titanium alloy plate |
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| CN114226456A (en) * | 2021-12-16 | 2022-03-25 | 西部钛业有限责任公司 | Rolling method of TA12A titanium alloy plate |
| CN114226456B (en) * | 2021-12-16 | 2023-05-05 | 西部钛业有限责任公司 | Rolling method of TA12A titanium alloy plate |
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