CN102744517A - Method for manufacturing dual-phase stainless steel hollow sandwich structure element - Google Patents
Method for manufacturing dual-phase stainless steel hollow sandwich structure element Download PDFInfo
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- CN102744517A CN102744517A CN2012102330011A CN201210233001A CN102744517A CN 102744517 A CN102744517 A CN 102744517A CN 2012102330011 A CN2012102330011 A CN 2012102330011A CN 201210233001 A CN201210233001 A CN 201210233001A CN 102744517 A CN102744517 A CN 102744517A
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Abstract
The invention discloses a method for manufacturing a dual-phase stainless steel hollow sandwich structure element and belongs to the field of the processing of material. The method comprises the steps of: firstly, preparing dual-phase stainless steel super-plastic plates with different cold rolling reductions by a cold rolling method, wherein the range of the cold rolling reduction is 40-90%, and processing a plurality of layers of dual-phase stainless steel super-plastic plates with different cold rolling reductions into the hollow sandwich structure elements according to a common super-plastic forming/diffusing connection method, wherein the cold rolling reductions are different under the same diffusion connection temperature; the structure transformation rule of each dual-phase stainless steel super-plastic plate is different, and the surface chemical activation of the dual-phase stainless steel plate can be improved by utilizing the difference of interface structure change of two layers of dual-phase stainless steel super-plastic plates, therefore, the purpose of improving the super-plastic forming/diffusing connection performance of the dual-phase stainless steel plate is achieved. The method has wide application prospect in the aspect of manufacturing the lightweight hollow sandwich structure element.
Description
Technical field
The invention belongs to material processing field, particularly the manufacturing of metal hollow sandwich structure and application.
Background technology
Two phase stainless steel is widely used in fields such as petrochemical industry, paper industry, chemical fertilizer industry, the energy and environment-protecting industrial, medicine equipment, briny environment, building decorations with its excellent corrosion-proof performance, suitable intensity and good toughness.Especially in recent years, along with the specific (special) requirements of fields such as ocean development machinery, boats and ships, naval vessels to anti-chloride stress cracking corrosive nature material, the two-phase stainless steel has obtained paying attention to widely.
Two phase stainless steel under given conditions; Have good superplasticity property, and the superplasticity property of two phase stainless steel is superior to traditional superplastic materials such as titanium alloy, aluminium alloy, therefore; Employing superplasticforming technology, the high-quality that can be shaped, high-precision complicated shape goods.But, to compare with titanium alloy, two phase stainless steel superplastic forming/diffusion connects (SPF/ DB) poor-performing, thereby has limited the application of two phase stainless steel superplastic forming/diffusion interconnection technique.Owing to adopt superplastic forming/diffusion interconnection technique; Can make the manufacturing of two phase stainless steel interlayer spare; Can make is the riveted joint and the fastening sub-assembly of screw of main manufacture methods with machining in the past; Replaced by large-scale hollow structural members,, and will build and urban beautification Art Design and manufacturing generation tremendous influence naval vessel and coastal cities for the weight that reduces cost, alleviates mechanized equipment provides effective means.Therefore, two phase stainless steel superplastic forming/diffusion interconnection technique is the problem that domestic and international this field is paid close attention to always.
Summary of the invention
The purpose of this invention is to provide a kind of two phase stainless steel hollow sandwich structural member manufacturing approach, solve two phase stainless steel superplastic forming/relatively poor difficult problem of diffusion switching performance.At present two phase stainless steel is ultra moulds/is shaped/spread that to connect needed connection pressure bigger, and connection pressure is big, can cause than the bigger distortion of large interface generation, thus limited the development and the application of two phase stainless steel superplastic forming/diffusion interconnection technique.
A kind of two phase stainless steel hollow sandwich structural member manufacturing approach, concrete processing step is:
(1) two phase stainless steel superplasticity preparation of plates
Two phase stainless steel superplasticity sheet material adopts common preparation method to obtain, and according to requirement of the present invention, chooses 2～4 blocks of two phase stainless steel superplasticity sheet materials that cold rolling reduction is different, and these sheet materials are cut becomes to have certain-length and width.Selected two phase stainless steel superplasticity sheet material thickness of slab is 0.2～3mm; Two-phase stainless steel board cold rolling reduction is minimum to be 40%, and the highest cold rolling reduction is 90%, adopts common surface treatment method that the surface of superplasticity two-phase stainless steel board is cleaned.
(2) assembling of sheet material
Adopt usual way to apply interleaving agent, and carry out welding assembly.Can be assembled into bilayer, three layers or four-sheet structure.The cold rolling reduction difference of adjacent two two-phase stainless steel boards is 10～50%.Welding assembly and vacuumize and handle to adopt usual way to carry out.
(3) dress mould and put into heater
With the multilayer two-phase stainless steel materials that assembles, in the mould of packing into, and put into heater.Two phase stainless steel superplastic forming/diffusion connects adopts common mould structure and heater.
(4) two phase stainless steel superplastic forming/diffusion connects
Mould to the different two-phase stainless steel board of the multilayer cold rolling reduction of packing into carries out heat temperature raising, and insulation 5～15min feeds argon gas, and argon pressure 5～10MPa carries out superplastic forming/diffusion and connects.
(5) cooling and depanning
After adopting the mode of water-cooled or air cooling to be shaped the taking-up of two phase stainless steel sandwich products.
Characteristics of the present invention be; Because the cold rolling reduction of adjacent two layers two-phase stainless steel board is different; In superplastic forming/diffusion connection procedure, the speed that two-phase proportion and phase structure form is different, formed a kind of organize formation speed graded; Can increase the chemism on two phase stainless steel superplastic material surface thus, thereby reach the purpose that improves two-phase stainless steel board superplastic forming/diffusion switching performance.
Description of drawings
Fig. 1 is a kind of process chart of two phase stainless steel hollow sandwich structural member manufacturing approach.
The specific embodiment
The invention provides a kind of two phase stainless steel hollow sandwich structural member manufacturing approach, the specific embodiment is following.
Embodiment
1, the manufacturing of SAF2205 two phase stainless steel three-ply sandwich structure
SAF2205 two phase stainless steel superplasticity sheet material adopts common preparation method to obtain, and cuts 3 blocks of SAF2205 two phase stainless steel superplasticity sheet materials, and length is 800mm, and width is 600mm, and thickness of slab is 1.5mm.Wherein the cold rolling reduction of two boards is 80%, and the cold rolling reduction of another piece sheet material is 50%.Adopt common acid washing method that the surface of superplasticity two-phase stainless steel board is cleaned.Adopting yittrium oxide interleaving agent commonly used to carry out local coating, is 50% the sheet material centre that to be placed on two cold rolling reductions be 80% sheet material with cold rolling reduction, carries out soldering group and dresses up the three ply board structure.With three layers of two phase stainless steel superplasticity sheet material that assemble, in the mould of packing into, and put into heater.The mould of the three layers of two-phase stainless steel board of packing into is carried out heat temperature raising to 1000 ℃, and insulation 10min feeds argon gas, and argon pressure 5MPa carries out superplastic forming/diffusion and connects, water-cooled then, taking-up member.
2, the manufacturing of SAF2507 two phase stainless steel three-ply sandwich structure
SAF2507 two phase stainless steel superplasticity sheet material adopts common preparation method to obtain, and cuts 3 blocks of SAF2507 two phase stainless steel superplasticity sheet materials, and length is 1000mm, and width is 500mm, and thickness of slab is 1.5mm.Wherein the cold rolling reduction of two boards is 85%, and the cold rolling reduction of another piece sheet material is 50%.Adopt common acid washing method that the surface of superplasticity two-phase stainless steel board is cleaned.Adopting yittrium oxide interleaving agent commonly used to carry out local coating, is 50% the sheet material centre that to be placed on two cold rolling reductions be 85% sheet material with cold rolling reduction, carries out soldering group and dresses up the three ply board structure.With three layers of two phase stainless steel superplasticity sheet material that assemble, in the mould of packing into, and put into heater.The mould of the three layers of two-phase stainless steel board of packing into is carried out heat temperature raising to 1000 ℃, and insulation 10min feeds argon gas, and argon pressure 5MPa carries out superplastic forming/diffusion and connects, water-cooled then, taking-up member.
3, the manufacturing of SAF2507 two phase stainless steel four layer interlayer structures
SAF2507 two phase stainless steel superplasticity sheet material adopts common preparation method to obtain, and cuts 4 blocks of SAF2507 two phase stainless steel superplasticity sheet materials, and length is 1000mm, and width is 500mm, and thickness of slab is 1.5mm.Wherein the cold rolling reduction of two boards is 85%, and the cold rolling reduction of two boards material is 50% in addition.Adopt common acid washing method that the surface of superplasticity two-phase stainless steel board is cleaned.Adopting yittrium oxide interleaving agent commonly used to carry out local coating, is that sheet material and two cold rolling reductions of 50% are the alternate placement of 85% sheet material with cold rolling reduction, carries out soldering group and dresses up four-sheet structure.With four layers of two phase stainless steel superplasticity sheet material that assemble, in the mould of packing into, and put into heater.The mould of the four layers of two-phase stainless steel board of packing into is carried out heat temperature raising to 1000 ℃, and insulation 10min feeds argon gas, and argon pressure 5MPa carries out superplastic forming/diffusion and connects, water-cooled then, taking-up member.
Claims (1)
1. two phase stainless steel hollow sandwich structural member manufacturing approach is characterized in that concrete processing step is:
(1) two phase stainless steel superplasticity preparation of plates:
Two phase stainless steel superplasticity sheet material adopts common preparation method to obtain, and chooses 2～4 blocks of two phase stainless steel superplasticity sheet materials that cold rolling reduction is different, and these sheet materials are cut becomes to have certain-length and width; Selected two phase stainless steel superplasticity sheet material thickness of slab is 0.2～3mm; Two-phase stainless steel board cold rolling reduction is minimum to be 40%, and the highest cold rolling reduction is 90%, adopts common surface treatment method that the surface of superplasticity two-phase stainless steel board is cleaned;
(2) assembling of sheet material:
Adopt usual way to apply interleaving agent, and carry out welding assembly; Be assembled into bilayer, three layers or four-sheet structure; The cold rolling reduction difference of adjacent two two-phase stainless steel boards is 10～50%; Welding assembly and vacuumize and handle to adopt usual way to carry out;
(3) dress mould and put into heater:
With the multilayer two-phase stainless steel materials that assembles, in the mould of packing into, and put into heater;
Two phase stainless steel superplastic forming/diffusion connects adopts common mould structure and heater;
(4) two phase stainless steel superplastic forming/diffusion connects:
Mould to the different two-phase stainless steel board of the multilayer cold rolling reduction of packing into carries out heat temperature raising, and insulation 5～15min feeds argon gas, and argon pressure 5～10MPa carries out superplastic forming/diffusion and connects;
(5) cooling and depanning:
After adopting the mode of water-cooled or air cooling to be shaped the taking-up of two phase stainless steel sandwich products.
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| CN201210233001.1A CN102744517B (en) | 2012-07-05 | 2012-07-05 | Method for manufacturing dual-phase stainless steel hollow sandwich structure element |
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| CN201210233001.1A CN102744517B (en) | 2012-07-05 | 2012-07-05 | Method for manufacturing dual-phase stainless steel hollow sandwich structure element |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103027506A (en) * | 2012-10-29 | 2013-04-10 | 冯中宇 | Stainless steel cabinet board and forming mould |
| CN103302414A (en) * | 2013-05-22 | 2013-09-18 | 西北工业大学 | Vacuum connecting method for stainless steel pieces |
| CN103331513A (en) * | 2013-07-03 | 2013-10-02 | 北京科技大学 | Manufacturing method of superplasticity duplex stainless steel sandwich structure |
| CN103753119A (en) * | 2013-12-09 | 2014-04-30 | 北京航星机器制造有限公司 | Lightweight wall panel superplastic forming production method |
| CN104175065A (en) * | 2014-06-30 | 2014-12-03 | 贵州安大航空锻造有限责任公司 | Superplastic forming method of 1Cr21Ni5Ti duplex stainless steel complex section ring piece |
| CN107962099A (en) * | 2017-11-21 | 2018-04-27 | 航天材料及工艺研究所 | A kind of four layers of thin-walled grid accessory and its superplastic forming/diffusion connection method containing entity structure |
| CN108746312A (en) * | 2018-05-25 | 2018-11-06 | 北京航星机器制造有限公司 | A method of it eliminating superplastic forming/diffusion and connects four-layer structure surface grooves |
| CN108817867A (en) * | 2018-08-20 | 2018-11-16 | 中国航空制造技术研究院 | A kind of closed manufacturing process with muscle hollow unit |
| CN110064834A (en) * | 2019-04-25 | 2019-07-30 | 北京航星机器制造有限公司 | A method of realizing the connection of aluminum alloy plate materials local diffusion |
| CN112272591A (en) * | 2018-06-07 | 2021-01-26 | 诺芝集团有限公司 | Superplastic forming apparatus and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103331513A (en) * | 2013-07-03 | 2013-10-02 | 北京科技大学 | Manufacturing method of superplasticity duplex stainless steel sandwich structure |
| CN103753119A (en) * | 2013-12-09 | 2014-04-30 | 北京航星机器制造有限公司 | Lightweight wall panel superplastic forming production method |
| CN104175065A (en) * | 2014-06-30 | 2014-12-03 | 贵州安大航空锻造有限责任公司 | Superplastic forming method of 1Cr21Ni5Ti duplex stainless steel complex section ring piece |
| CN104175065B (en) * | 2014-06-30 | 2016-08-24 | 贵州安大航空锻造有限责任公司 | The super plastic forming method of 1Cr21Ni5Ti two phase stainless steel complex section annular element |
| CN107962099A (en) * | 2017-11-21 | 2018-04-27 | 航天材料及工艺研究所 | A kind of four layers of thin-walled grid accessory and its superplastic forming/diffusion connection method containing entity structure |
| CN107962099B (en) * | 2017-11-21 | 2019-04-30 | 航天材料及工艺研究所 | A kind of four containing entity structure layer thin-walled grid accessory and its superplastic forming/diffusion connection method |
| CN108746312B (en) * | 2018-05-25 | 2020-06-19 | 北京航星机器制造有限公司 | Method for eliminating surface groove of superplastic forming/diffusion bonding four-layer structure |
| CN108746312A (en) * | 2018-05-25 | 2018-11-06 | 北京航星机器制造有限公司 | A method of it eliminating superplastic forming/diffusion and connects four-layer structure surface grooves |
| CN112272591A (en) * | 2018-06-07 | 2021-01-26 | 诺芝集团有限公司 | Superplastic forming apparatus and method |
| CN112272591B (en) * | 2018-06-07 | 2023-03-10 | 诺芝集团有限公司 | Superplastic forming apparatus and method |
| CN108817867A (en) * | 2018-08-20 | 2018-11-16 | 中国航空制造技术研究院 | A kind of closed manufacturing process with muscle hollow unit |
| CN108817867B (en) * | 2018-08-20 | 2021-03-05 | 中国航空制造技术研究院 | Forming method of closed ribbed hollow component |
| CN110064834A (en) * | 2019-04-25 | 2019-07-30 | 北京航星机器制造有限公司 | A method of realizing the connection of aluminum alloy plate materials local diffusion |
| CN110064834B (en) * | 2019-04-25 | 2021-12-07 | 北京航星机器制造有限公司 | Method for realizing local diffusion connection of aluminum alloy plates |
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