CN105032973A - TC4 titanium alloy plate machining method - Google Patents
TC4 titanium alloy plate machining method Download PDFInfo
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- CN105032973A CN105032973A CN201510460936.7A CN201510460936A CN105032973A CN 105032973 A CN105032973 A CN 105032973A CN 201510460936 A CN201510460936 A CN 201510460936A CN 105032973 A CN105032973 A CN 105032973A
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Abstract
The invention discloses a TC4 titanium alloy plate machining method. The method includes the following steps that firstly, sponge titanium, aluminum powder, vanadium powder and iron powder are mixed according to the mass percent and extruded to form titanium blank, and then the titanium blank is welded, smelted and scalped to form a titanium ingot; secondly, cogging and forging are carried out on the titanium ingot to form a titanium slab, and then a smooth titanium slab with the thickness being smaller than or equal to 100 mm is formed through sawing and milling; thirdly, the smooth titanium slab is hot-rolled and ground at least three times after hot rolling to form a titanium plate with the thickness being smaller than or equal to 2 mm, annealing is conducted at the temperature of 800 DEG C, and heat is preserved for 0.8-1.2 hours to form a smooth titanium plate without cracks; and fourthly, cold rolling is conducted, and the smooth titanium plate is cold-rolled into the titanium plate with the thickness being smaller than or equal to 0.4 mm under at least three times of different annealing temperature conditions. The method reduces oxide skin formed during heating, has the advantages of being good in corrosion resistance, small in density, high in specific strength and good in toughness and welding performance, and is widely used in aerospace, petrifaction, shipbuilding and the automobile industry.
Description
Technical field
The invention belongs to metal material processing technical field, relate to titanic alloy machining, be specifically related to a kind of TC
4the processing method of alloy sheets.
Background technology
People utilize the feature such as high strength and strong corrosion resistant of titanium plate, in the exterior materials such as Transport Machinery component and home appliance such as the civil goods such as heat exchanger component, camera body, cooking apparatus, motorcycle, automobile, use titanium plate.Along with the raising of people's quality of life, for using, the heat-exchangers of the plate type of high heat exchanger effectiveness is more and more extensive.But if high heat exchanger effectiveness will be met, just must molding by extrusionly be processed into wavyly increases surface area.Therefore, titanium plate is processed into the component of various goods, has just had higher requirement to its formability and washing down property.
Chinese patent (CN102675952A) discloses a kind of aviation TC
4the manufacture process of titanium plate, mainly through forging, surface strips off the skin, remove surface contamination, the several step of hot rolling completes.The rolling temperature of the method at 450 DEG C ~ 1150 DEG C, and is easy to send out oxygenic reaction with air, forms TiO
2and Ti
2o
3these two kinds of compounds, wherein, directly penetrate into the top layer of titanium greatly, the degree of depth can reach 2mm, this pollution is that titanium slab surface in the operation of rolling occurs obviously and wider crackle to the injury that product causes, the degree of depth of crackle reaches 2mm ~ 3mm, and this situation appears in whole plate face 30%, causes product quality degradation.
Summary of the invention
Based on the problems referred to above, the invention provides a kind of TC
4the processing method of titanium alloy sheet, its process mainly at high temperature by the hot rolling of at least three phases and cold rolling, decreases the oxide skin on titanium plate surface, hot rolling and cold rolling at the end of, cool, repeatedly reconditioning, make final products TC
4titanium plate surface flawless, significantly improves the quality of product.Concrete technical scheme is:
A kind of TC
4the processing method of titanium alloy sheet, is characterized in that, comprises the following steps: the first step, and according to mass percent by titanium sponge, aluminium powder, vanadium powder, iron powder mixing, extruding forms titanium base, then welds titanium base, melting and strip off the skin and form titanium ingot; Second step, forms titanium slab to the cogging of titanium ingot, forging, then forms the titanium slab of thickness≤100mm light through sawing, milling face; 3rd step, carries out hot rolling to the titanium slab of light, forms the titanium plate of thickness≤2mm after hot rolling again through at least three reconditionings, and then 800 DEG C of annealing, insulation 0.8h ~ 1.2h forms flawless, bright titanium plate; 4th step, carries out cold rolling, at least three different annealing temperature condition by cold rolling for the titanium plate of the light titanium plate making thickness≤0.4mm.
Further, the mixing quality percentage of described titanium sponge, aluminium powder, vanadium powder, iron powder is titanium sponge 80% ~ 84%, aluminium powder is 4% ~ 8%, iron powder is 6% ~ 8%, vanadium powder 2% ~ 6%.
Further, described hot rolling comprises the following steps:
A, by the titanium slab of thickness≤100mm light at 1000 DEG C of insulation 4h ~ 5h, then roll compacting is to 80mm, and and then roll compacting is to 65mm, the thick titanium plate of continuation roll compacting formation 50mm; Then cool, carry out first time reconditioning;
The titanium plate that B, 50mm first time reconditioning obtained are thick is incubated 4h ~ 5h at 1000 DEG C, and then roll compacting is to 35mm, and and then roll compacting is to 25mm, continues roll compacting and forms the thick titanium plate of 20mm; Then cool, carry out second time reconditioning;
C, the titanium plate of 20mm thickness that second time reconditioning obtained are at 1000 DEG C of insulation 4h ~ 5h, and then roll compacting is to 12mm, and and then roll compacting is to 7mm, and continuation roll compacting is to 4mm, and swaging of rerolling becomes the titanium plate of thickness≤2mm; Then cool, carry out third time reconditioning.
Further, describedly cold rollingly to comprise the following steps:
A, by thickness≤2mm light titanium plate 800 DEG C insulation 1h, be cold rolled to 1mm; Cool again, carry out first time reconditioning;
The titanium plate that B, 1mm first time reconditioning obtained are thick is incubated 1h at 760 DEG C, is cold rolled to 0.6mm; Cool again, carry out second time reconditioning;
The titanium plate that C, 0.6mm second time reconditioning obtained are thick is incubated 1h at 760 DEG C, is cold rolled to thickness≤0.4mm; Cool again, carry out third time reconditioning.
The technique effect that the present invention is useful is: TC provided by the invention
4thickness≤the 0.4mm of titanium plate, achieves ultra-thin TC
4the production of titanium plate.This titanium plate has the advantages such as density is low, specific strength is high, corrosion resistance is good, thermoplasticity is good, processing performance is good, is ideal aerospace engineering structural material.Weldability is good, and it can carry out various forms of welding, and its strength of welded joint can reach parent metal intensity 90%, also has corrosion resisting property good, the feature of Heat stability is good.
Accompanying drawing explanation
Fig. 1 is process route chart of the present invention.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in detail.
A kind of TC
4the processing method of titanium alloy sheet, comprises the following steps: the first step is according to a certain percentage by titanium sponge, aluminium powder, vanadium powder, iron powder mixing, and extruding forms titanium base, then welds titanium base, melting and strip off the skin and form titanium ingot; Second step to the thickness of the cogging of titanium ingot, forging formation 100mm, then forms bright titanium slab through sawing, milling face; 3rd step is hot rolling, is finally the thick titanium plate of 2mm through three reconditionings, then anneals at 800 DEG C, and insulation 1h forms flawless, bright titanium plate; 4th step is cold rolling, under three different annealing temperatures by cold rolling for titanium plate be that 0.4mm is thick.
According to mass percent proportioning, wherein titanium sponge is 82%, and aluminium is 6%, and iron is 8%, the mixing of vanadium 4% 4 kind of raw material, and extruding forms titanium base, welds, melting, stripping off the skin forms titanium ingot to titanium base.Cogging, forge titanium slab titanium ingot shape being become 100mm, make through sawing, milling face six of slab faces all form bright of light.
The 100mm titanium plate of light is incubated 4h at 1000 DEG C, then hot rolling gradually: 100mm ~ 80mm ~ 65mm ~ 50mm, the titanium plate that first time roll compacting is formed, through cooling, reconditioning; Continue to be incubated 4h at 1000 DEG C, hot rolling gradually: 50mm ~ 35mm ~ 25mm ~ 20mm again, the titanium plate that second time roll compacting is formed, through cooling, reconditioning again, third time is incubated 4h at 1000 DEG C, third time promptly hot rolling: 20mm ~ 12mm ~ 7mm ~ 4mm ~ 2mm, forms light through three hot rollings, crackless titanium plate starts from 1000 DEG C of annealing until to 800 DEG C, insulation 1h.
Titanium plate thick for the 2mm of light is incubated 1h at 800 DEG C, is then cold rolled to 1mm gradually, then cools, reconditioning, complete cold rolling for the first time; Titanium plate thick for the 1mm of light is incubated 1h at 760 DEG C, is cold rolled to 0.6mm; Then cool, reconditioning, complete secondary cold-rolling; Titanium plate thick for the 0.6mm of light is incubated 1h at 760 DEG C, is cold rolled to 0.4mm; Then cool, reconditioning, through three thick titanium plates of cold rolling formation 0.4mm, inspection finished product warehouse-in.The process route chart of concrete production as shown in Figure 1.
Present invention achieves ultra-thin TC
4the production of titanium plate, be ideal aerospace engineering structural material, its weldability is good, and can carry out various forms of welding, its strength of welded joint can reach parent metal intensity 90%, also has corrosion resisting property good, the feature of Heat stability is good.
Claims (4)
1. a TC
4the processing method of titanium alloy sheet, is characterized in that, comprises the following steps: the first step, and according to mass percent by titanium sponge, aluminium powder, vanadium powder, iron powder mixing, extruding forms titanium base, then welds titanium base, melting and strip off the skin and form titanium ingot; Second step, forms titanium slab to the cogging of titanium ingot, forging, then forms the titanium slab of thickness≤100mm light through sawing, milling face; 3rd step, carries out hot rolling to the titanium slab of light, forms the titanium plate of thickness≤2mm after hot rolling again through at least three reconditionings, and then 800 DEG C of annealing, insulation 0.8h ~ 1.2h forms flawless, bright titanium plate; 4th step, carries out cold rolling, at least three different annealing temperature condition by cold rolling for the titanium plate of the light titanium plate making thickness≤0.4mm.
2. a kind of TC according to claim 1
4the processing method of titanium alloy sheet, is characterized in that, the mixing quality percentage of described titanium sponge, aluminium powder, vanadium powder, iron powder is titanium sponge 80% ~ 84%, aluminium powder is 4% ~ 8%, iron powder is 6% ~ 8%, vanadium powder 2% ~ 6%.
3. a kind of TC according to claim 1 and 2
4the processing method of titanium alloy sheet, is characterized in that, described hot rolling comprises the following steps:
A, by the titanium slab of thickness≤100mm light at 1000 DEG C of insulation 4h ~ 5h, then roll compacting is to 80mm, and and then roll compacting is to 65mm, the thick titanium plate of continuation roll compacting formation 50mm; Then cool, carry out first time reconditioning;
The titanium plate that B, 50mm first time reconditioning obtained are thick is incubated 4h ~ 5h at 1000 DEG C, and then roll compacting is to 35mm, and and then roll compacting is to 25mm, continues roll compacting and forms the thick titanium plate of 20mm; Then cool, carry out second time reconditioning;
C, the titanium plate of 20mm thickness that second time reconditioning obtained are at 1000 DEG C of insulation 4h ~ 5h, and then roll compacting is to 12mm, and and then roll compacting is to 7mm, and continuation roll compacting is to 4mm, and swaging of rerolling becomes the titanium plate of thickness≤2mm; Then cool, carry out third time reconditioning.
4. a kind of TC according to claim 1 and 2
4the processing method of titanium alloy sheet, is characterized in that, describedly cold rollingly to comprise the following steps:
A, by thickness≤2mm light titanium plate 800 DEG C insulation 1h, be cold rolled to 1mm; Cool again, carry out first time reconditioning;
The titanium plate that B, 1mm first time reconditioning obtained are thick is incubated 1h at 760 DEG C, is cold rolled to 0.6mm; Cool again, carry out second time reconditioning;
The titanium plate that C, 0.6mm second time reconditioning obtained are thick is incubated 1h at 760 DEG C, is cold rolled to thickness≤0.4mm; Cool again, carry out third time reconditioning.
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| CN201510460936.7A CN105032973A (en) | 2015-07-29 | 2015-07-29 | TC4 titanium alloy plate machining method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392483A (en) * | 2016-11-07 | 2017-02-15 | 南昌专腾科技有限公司 | Composite titanium plate manufacturing process and system |
| CN108838208A (en) * | 2018-04-23 | 2018-11-20 | 舞阳钢铁有限责任公司 | A kind of two fiery milling methods of wide cut TC4 titanium alloy blank |
| CN109648252A (en) * | 2018-12-11 | 2019-04-19 | 陕西宏远航空锻造有限责任公司 | A kind of large titanium alloy frame forging machining deformation control method and device |
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| JPH09125215A (en) * | 1995-11-01 | 1997-05-13 | Sumitomo Metal Ind Ltd | Production of beta titanium alloy sheet |
| CN101139670A (en) * | 2007-10-17 | 2008-03-12 | 西北有色金属研究院 | Technique for processing titanium alloy sheet material |
| CN101906602A (en) * | 2010-09-10 | 2010-12-08 | 攀钢集团钢铁钒钛股份有限公司 | Method for processing metastable beta-type titanium alloy plate |
| CN102225504A (en) * | 2011-04-06 | 2011-10-26 | 宝鸡鑫泽钛镍有限公司 | Process for fabricating high precision titanium and titanium alloy plates |
| CN104152744A (en) * | 2014-07-08 | 2014-11-19 | 宁夏东方钽业股份有限公司 | Low-cost medium-high-strength corrosion-resistant titanium alloy and processing method thereof |
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2015
- 2015-07-29 CN CN201510460936.7A patent/CN105032973A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09125215A (en) * | 1995-11-01 | 1997-05-13 | Sumitomo Metal Ind Ltd | Production of beta titanium alloy sheet |
| CN101139670A (en) * | 2007-10-17 | 2008-03-12 | 西北有色金属研究院 | Technique for processing titanium alloy sheet material |
| CN101906602A (en) * | 2010-09-10 | 2010-12-08 | 攀钢集团钢铁钒钛股份有限公司 | Method for processing metastable beta-type titanium alloy plate |
| CN102225504A (en) * | 2011-04-06 | 2011-10-26 | 宝鸡鑫泽钛镍有限公司 | Process for fabricating high precision titanium and titanium alloy plates |
| CN104152744A (en) * | 2014-07-08 | 2014-11-19 | 宁夏东方钽业股份有限公司 | Low-cost medium-high-strength corrosion-resistant titanium alloy and processing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392483A (en) * | 2016-11-07 | 2017-02-15 | 南昌专腾科技有限公司 | Composite titanium plate manufacturing process and system |
| CN106392483B (en) * | 2016-11-07 | 2019-06-28 | 南昌专腾科技有限公司 | A kind of manufacturing process and system of compound titanium plate |
| CN108838208A (en) * | 2018-04-23 | 2018-11-20 | 舞阳钢铁有限责任公司 | A kind of two fiery milling methods of wide cut TC4 titanium alloy blank |
| CN109648252A (en) * | 2018-12-11 | 2019-04-19 | 陕西宏远航空锻造有限责任公司 | A kind of large titanium alloy frame forging machining deformation control method and device |
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