CN102009326B - Method for manufacturing thin nickel-titanium composite material - Google Patents
Method for manufacturing thin nickel-titanium composite material Download PDFInfo
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- CN102009326B CN102009326B CN2010105381660A CN201010538166A CN102009326B CN 102009326 B CN102009326 B CN 102009326B CN 2010105381660 A CN2010105381660 A CN 2010105381660A CN 201010538166 A CN201010538166 A CN 201010538166A CN 102009326 B CN102009326 B CN 102009326B
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Abstract
The invention discloses a method for manufacturing a thin nickel-titanium composite material, which comprises the following steps of: compounding a base titanium plate and a composite nickel plate together by explosive welding to obtain a nickel-titanium composite material, wherein the base titanium plate is made of industrial pure titanium, and the composite nickel plate is made of industrial pure nickel; putting the nickel-titanium composite material obtained by explosive welding into a step heating furnace for heating and preserving the heat; arranging a heat preservation layer and a heating device on four sides of a guide roller, and heating the guide roller by adopting the heating device before rolling; and then thermally rolling the heated nickel-titanium composite material to obtain the high-quality thin nickel-titanium composite material. The method can manufacture the large-area thin nickel-titanium composite material by one-time thermal rolling, is convenient to produce and improves the efficiency; and the composite material has high composite interface bonding strength and bonding rate and good flatness, and is easy to level.
Description
Technical field
The present invention relates to a kind of metallic composite manufacturing technology, particularly a kind of manufacturing approach of thin NiTi composite.
Background technology
Explosive welding is the energy with the explosive exactly, the method for metal working that plied timber high velocity impact parent metal also links together strongly under the effect of explosive charge load.The Ni-Ti composite material concurrent that adopts explosive welding to produce has the advantage of titanium and nickel; Rolling technique can be with the Ni-Ti thickness of composite material attenuation of explosive welding; It is big that area becomes, and therefore adopts the thin Ni-Ti composite of explosive welding+Rolling Production at chemical industry and metallurgy industry wide application development prospect to be arranged.Yet because titanium can undergo phase transition more than 880 ℃; Therefore the rolling temperature of Ni-Ti composite can not be higher than this temperature, because the temperature reduction in the operation of rolling of Ni-Ti composite is very fast, makes the Ni-Ti composite cold rolling through also carrying out after the hot rolling; In cold-rolled process; Because the deformation coefficient of titanium and nickel is different, make Ni-Ti composite bond strength and the problems such as the combination rate is low, plate shape is poor, difficult smoothing that obtain after rolling to cause product rejection.Therefore, common explosive welding+milling method is difficult to produce high-quality thin Ni-Ti composite.
Summary of the invention
Technical problem to be solved by this invention provides a kind of manufacturing approach of thin NiTi composite; Solving Ni-Ti composite temperature in the operation of rolling reduces very fast; Make the Ni-Ti composite cold rolling through also carrying out after the hot rolling; In cold-rolled process; Because the deformation coefficient of titanium and nickel is different, make to make Ni-Ti composite bond strength and the problems such as the combination rate is low, plate shape is poor, difficult smoothing that obtain after rolling and utilize the thin Ni-Ti composite of this method manufacturing to have good quality.
For the purpose that realizes solving the problems of the technologies described above, the present invention has adopted following technical scheme:
The manufacturing approach of thin NiTi composite of the present invention obtains the Ni-Ti composite with basic unit's titanium plate and multiple layer nickel plate through the compound one of explosive welding earlier, and wherein, the material of basic unit's titanium plate is an industrially pure titanium, and the material of multiple layer nickel plate is an industrial pure ni; The Ni-Ti composite that again explosive welding is obtained is put into walking beam furnace and is heated to 820 ~ 875 ℃, is preferably in 850 ℃, then insulation; Be provided with heat-insulation layer and heater around the deflector roll, before rolling, adopt heater that deflector roll is heated to 820 ~ 875 ℃, be preferably in 850 ℃; Ni-Ti composite after will heating then carries out hot rolling, obtains high-quality thin Ni-Ti composite.
The manufacturing approach of described thin NiTi composite, heating furnace and milling train be 8 ~ 12 meters apart from the best.
The manufacturing approach of described thin NiTi composite, Ni-Ti composite are put into walking beam furnace temperature retention time T=2 * δ, and δ is a slab thickness, and thickness unit is mm, and chronomere is min.
Through adopting technique scheme, the present invention has following beneficial effect:
1) can obtain the thin Ni-Ti composite of large tracts of land;
2) can obtain thin Ni-Ti composite composite through single hot-roll, convenient production raised the efficiency;
3) compound interface bond strength and combination rate are high, and the composite good planeness is easy to smoothing.
Description of drawings
Fig. 1 is the rolling equipment sketch map of thin Ni-Ti composite.
Among the figure, 1 walking beam furnace, 2 heat-insulation layers, 3 heaters, 4 milling trains, 5 guide rails.
The specific embodiment
In conjunction with embodiment manufacturing approach of the present invention is explained.
Earlier basic unit's titanium plate and multiple layer nickel plate are obtained the Ni-Ti composite through the compound one of explosive welding, wherein, the material of basic unit's titanium plate is an industrially pure titanium, and the material of multiple layer nickel plate is an industrial pure ni; Like Fig. 1; The Ni-Ti composite that again explosive welding is obtained is put into walking beam furnace 1 and is heated to 850 ℃; Confirm that according to the thickness of Ni-Ti composite slab (T=2 * δ, δ are slab thickness to temperature retention time T, and thickness unit is mm; Chronomere is min), the distance of heating furnace and milling train is 8 ~ 12 meters; Be provided with heat-insulation layer 2 and heater 3 around the deflector roll, before rolling, adopt heater 3 that deflector roll 5 is heated to 850 ℃; On milling train 4, carry out hot rolling then, obtain high-quality thin Ni-Ti composite.
Embodiment 1
Make a thin Ni-Ti composite, basic unit's titanium plate trade mark is TA2, is of a size of 1 * 1200 * 2000mm, and multiple layer is pure nickel N4, is of a size of 1.5 * 1200 * 2000mm.Be that basic unit's titanium plate and the thickness of 6mm is that the multiple layer nickel plate of 9mm is through the compound one acquisition of explosive welding Ni-Ti composite earlier with thickness; The Ni-Ti composite that again explosive welding is obtained is put into walking beam furnace and is heated to 850 ℃ and be incubated 30 minutes; Before rolling, adopt heater that deflector roll is heated to 850 ℃; Carry out hot rolling then, the thin Ni-Ti composite that obtains has good composite quality and plate shape preferably, carries out bond strength through sampling and detects; The proof interface combines firmly; Separation is not seen at the Ni-Ti interface, interface bond strength >=170Mpa, and recombination rate is 100%.
Make a thin Ni-Ti composite, basic unit's titanium plate trade mark is TA1, is of a size of 0.5 * 1500 * 4000mm, and multiple layer is pure nickel N7, is of a size of 3 * 1500 * 4000mm.Be that basic unit's titanium plate and the thickness of 3mm is that the multiple layer nickel plate of 18mm is through the compound one acquisition of explosive welding Ni-Ti composite earlier with thickness; The Ni-Ti composite that again explosive welding is obtained is put into heating furnace and is heated to 840 ℃ and be incubated 42 minutes; Adopt heater that deflector roll is heated to 850 ℃ then; Carry out hot rolling at last, the thin Ni-Ti composite that obtains has good composite quality and plate shape preferably, carries out bond strength through sampling and detects; The proof interface combines firmly; Separation is not seen at the Ni-Ti interface, interface bond strength >=200Mpa, and recombination rate is 100%.
Make a thin Ni-Ti composite, basic unit's titanium plate trade mark is TA2, is of a size of 2 * 400 * 3000mm, and multiple layer is pure nickel N6, is of a size of 0.2 * 400 * 3000mm.Be that basic unit's titanium plate and the thickness of 12mm is that the multiple layer nickel plate of 1.2mm is through the compound one acquisition of explosive welding Ni-Ti composite earlier with thickness; The Ni-Ti composite that again explosive welding is obtained is put into heating furnace and is heated to 850 ℃ and be incubated 26 minutes; Adopt heater that deflector roll is heated to 870 ℃ then; Carry out hot rolling at last, the thin Ni-Ti composite that obtains has good composite quality and plate shape preferably, carries out bond strength through sampling and detects; The proof interface combines firmly; Separation is not seen at the Ni-Ti interface, interface bond strength >=220Mpa, and recombination rate is 100%.
Comparative Examples:
Make a thin Ni-Ti composite, basic unit's titanium plate trade mark is TA2, is of a size of 1.5 * 400 * 3000mm, and multiple layer is pure nickel N6, is of a size of 1.5 * 400 * 3000mm.Be that basic unit's titanium plate and the thickness of 9mm is that the multiple layer nickel plate of 9mm is through the compound one acquisition of explosive welding Ni-Ti composite earlier with thickness; The Ni-Ti composite that again explosive welding is obtained is put into heating furnace and is heated to 850 ℃ and be incubated 36 minutes; , the Ni-Ti thickness of composite material after the hot rolling is 7.5mm, is cold rolled to 3mm then; The Ni-Ti composite panel deformation shape that obtains after rolling is serious, carries out bond strength through sampling and detects, and proves that interface bond strength is low; There is separation at the Ni-Ti interface; Interface bond strength＜140Mpa, recombination rate has only 86%, can not satisfy instructions for use.
Claims (3)
1. the manufacturing approach of a thin NiTi composite is characterized in that: earlier basic unit's titanium plate and multiple layer nickel plate are obtained the Ni-Ti composite through the compound one of explosive welding, wherein, the material of basic unit's titanium plate is an industrially pure titanium, and the material of multiple layer of nickel plate is an industrial pure ni; The Ni-Ti composite that again explosive welding is obtained is put into walking beam furnace and is heated to 820 ~ 875 ℃; Be provided with heat-insulation layer and heater around the deflector roll, before rolling, adopt heater that deflector roll is heated to 820 ~ 875 ℃; Ni-Ti composite after will heating then carries out hot rolling, obtains high-quality thin Ni-Ti composite; The distance of heating furnace and milling train is 8 ~ 12 meters; The Ni-Ti composite is put into walking beam furnace T=2 * δ heat time heating time, and δ is a slab thickness, and thickness unit is mm, and chronomere is min.
2. according to the manufacturing approach of the said thin NiTi composite of claim 1, it is characterized in that: described deflector roll heating-up temperature is 850 ℃.
3. according to the manufacturing approach of the said thin NiTi composite of claim 1, it is characterized in that: described Ni-Ti composite heating-up temperature is 850 ℃.
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| CN105058914B (en) * | 2015-07-13 | 2017-09-01 | 西安建筑科技大学 | A kind of stratiform Ti Ni composite material of shape memory and preparation method thereof |
| CN111215855B (en) * | 2020-02-20 | 2021-05-11 | 有研工程技术研究院有限公司 | Titanium/nickel alloy part based on explosive welding and laser additive manufacturing and preparation method |
| CN112975277B (en) * | 2021-02-04 | 2021-12-10 | 燕山大学 | Steel-aluminum bimetal rolling compounding method for oxidation treatment before rolling |
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| WO2004089569A1 (en) * | 2003-04-09 | 2004-10-21 | Mitsubishi Denki Kabushiki Kaisha | Device and method for processing screw rotor, and cutting tool |
| CN101683656B (en) * | 2008-09-27 | 2012-05-30 | 宝山钢铁股份有限公司 | Method for producing composite steel plate by strip continuous casting and tandem rolling |
| CN101559518A (en) * | 2008-12-08 | 2009-10-21 | 四川惊雷科技股份有限公司 | Explosive welding method of NO6625 alloy and 16MnR low alloy steel |
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Effective date of registration: 20210125 Address after: No. 169, Binhe South Road, Luolong District, Luoyang City, Henan Province Patentee after: NO.725 RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp. Address before: 471800 shuangxiang Road, Luoxin Industrial Park, Xin'an County, Luoyang City, Henan Province Patentee before: LUOYANG SHUANGRUI METAL COMPOSITE MATERIALS Co.,Ltd. |
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