CN105689882A - Composite board resistant to high-temperature seawater corrosion and production method thereof - Google Patents
Composite board resistant to high-temperature seawater corrosion and production method thereof Download PDFInfo
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- CN105689882A CN105689882A CN201410712572.2A CN201410712572A CN105689882A CN 105689882 A CN105689882 A CN 105689882A CN 201410712572 A CN201410712572 A CN 201410712572A CN 105689882 A CN105689882 A CN 105689882A
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Abstract
The invention discloses a composite board resistant to high-temperature seawater corrosion. The composite board resistant to high-temperature seawater corrosion comprises a covering board and a base board. The covering board and the base board are made of different metals. The combined shearing strength of the composite interface of the composite board reaches 231 MPa. The invention further provides a production method for manufacturing the composite board resistant to high-temperature seawater corrosion through explosive cladding. The thickness of covering titanium in the composite board is about 12 mm and breaks through the regulation of 2-10 mm in the national standard. The combined shearing strength of the composite interface of the composite board is larger than 231 MPa, so that the requirement for the strength in the using process is met. The two materials of the covering board and the base board are both good in corrosion resistance and can resist corrosion of higher-corrosivity seawater-like media and high-corrosivity seawater-like media. With the arrival of ocean economy, more and more causes related to ocean emerge, and therefore development of the special material resistant to high-temperature seawater corrosion working conditions is more and more meaningful, and the composite board is supposed to have good application prospects.
Description
Technical field
The present invention relates to a kind of composite plate, be specifically related to a kind of explosive clad plate and the production method of this composite plate。
Background technology
Oxidation solution cooling heat exchanger is the equipment that chemical field is conventional, and coke-stove gas absorbs through desulfurization, the hydrogen sulfide in coal gas, Blausure (German) and ammonia etc. is absorbed。Absorbing liquid is containing minute quantity 1,4 naphthoquinone 2 sodium sulfonates (are called for short 1,4NQ) and the ammonia spirit of organic phenol, it carries out desulfuration and decyanation using the ammonia in coal gas as alkali source, absorb hydrogen sulfide, the liquid that absorbs of Blausure (German) extracts the bottom of cooled device entrance oxidizing tower out, bottom oxidizing tower, it is simultaneously fed into compression air carries out Oxidation to absorbing liquid, the most of oxidation solution gravity flow discharged from oxidizing tower top flows into absorption tower top spray, forming the blood circulation of desulfuration and decyanation, fraction oxidation solution send wet oxidation device。These solution corrosion performances are extremely strong, require significantly high to the decay resistance of equipment and materials。Simultaneously as technological reason, temperature, pressure are also of a relatively high, respectively 250～272 DEG C, 7.50 ± 0.30MPa, thus the requirement of strength of material is also significantly high。
Tube sheet in this heat exchanger is positioned at the heat exchanger first half, and tube sheet needs to use composite metal plate, and this tube sheet needs to reach high temperature resistant seawater corrosion。But all more difficult requirement meeting heat exchanger use environment such as current composite plate its decay resistance, interface binding power etc.。
Summary of the invention
Therefore, the technical problem to be solved in the present invention be to provide one can be high temperature resistant, corrosion-resistant, it is possible to the composite plate of seawater corrosion resistance。Another technical problem that the invention solves the problems that is to provide the production method of this composite plate。
The technical scheme is that the composite plate of a kind of high temperature resistant seawater corrosion is dissimilar metal including cladding plate and substrate, described cladding plate and substrate；Described composite plate compound interface reach 231MPa in conjunction with shear strength。Namely shear strength is more than 231MPa。
The composite plate of the high temperature resistant seawater corrosion according to the present invention, it is preferred that described cladding plate is titanium plate, described substrate is 2205 two-way rustless steels；The thickness of described titanium plate is 12mm ± 0.5mm。
Present invention also offers the production method of the composite plate of a kind of high temperature resistant seawater corrosion, including the cladding plate of the substrate on top and bottom, the method includes:
(1) sand drift or sand heap have been piled on the ground；
(2) substrate of surface cleaning is put on sand drift or sand heap；
(3) on to be combined of substrate, place the metal gap post of some, shape and size uniformly；
(4) cladding plate after cleaning is placed on described substrate；Described substrate and cladding plate are not same metal；
(5) smearing buffer protection layer at described cladding plate upper surface, described buffer protection layer is made up of lubricating oil or water-soluble binder；
(6) medicine frame is placed on the buffer protection layer of described cladding plate；Placing main explosive in described medicine frame, described main explosive thickness in medicine frame is essentially identical；
(7) in the geometric center position of cladding plate or close to geometric center position, the ignition charge of 50～200g is laid；Or first place ignition charge, then place main explosive；
(8) insert detonator in ignition charge position, and detonator is contacted with cladding plate surface；
(9) when using electric cap, the payment to a porter of electric cap is connected with the wire of detonating cord；Through one or many explosion, obtain explosive clad plate。
The thickness of buffer protection layer is preferably 0.1～0.9mm.
The production method of the composite plate of the high temperature resistant seawater corrosion according to the present invention, it is preferred that step (4) described gap post is pad。For example, it is possible to be copper backing。
The production method of the composite plate of the high temperature resistant seawater corrosion according to the present invention, it is preferred that step (5) described lubricating oil is selected from butter；Described water-soluble binder is selected from waterglass。
The production method of the composite plate of the high temperature resistant seawater corrosion according to the present invention, it is preferred that the thickness of the described main explosive of step (6) is 100-200mm。Further, the thickness of the described main explosive of step (6) is 120-150mm。
Or, the described main explosive of step (6) is low blasting speed brisant explosive。
Further, described main explosive parameter: explosion velocity 2300～2500m/s, brisance >=10mm, induced detonation >=3cm。
The production method of the composite plate of the high temperature resistant seawater corrosion according to the present invention, it is preferred that it is ammonium nitrate 88-96wt%, diesel oil 2-6wt% and silicates regulator 2-6wt% that described low blasting speed height brisance includes Main Ingredients and Appearance。
Preferably, in the method, cladding plate is titanium plate, and substrate is 2205 two-way rustless steels。
The production method of the composite plate of the high temperature resistant seawater corrosion according to the present invention, it is preferred that step (7) described ignition charge is detonating explosive。The explosion velocity of detonating explosive is 1.2-1.8 times of main explosive。
Connect initiator, when be placed in the explosive on cladding plate by cap sensitive after, explosive blast chemical reaction through acceleration after a while, just propagate forward on cladding plate with detonation rate。Along with the sharply expansion of the propelling of detonation wave and explosion product, chemistry of explosives can major part just convert the detonation wave of high-speed motion and the kinetic energy of explosion product to, a part for this kinetic energy passes to cladding plate subsequently, thus promoting cladding plate to substrate high-speed motion。While the rapid and whole discharge of gas between two plates, cladding plate and substrate clash on the contact point successively。In this process, on two plate contact surfaces, by the formation of ripple, there is strong plastic deformation due to the effect of oblique impact and tangential stress in a thin layer metal。In the process by the heat effect of metal plastic deformation, convert heat energy to by the 90%～95% of cladding plate high-speed motion kinetic energy。Such substantial amounts of heat energy is when near adiabatic, raise promoting the temperature of metal after plastic deformation, after this temperature reaches the fusing point of metal, the a thin layer plastic deforming metal against interface will be made to melt, when, after its rapidly cooling, just being formed on interface and include the land of diffusion characteristic between metal plastic deformation feature, fusing feature and atom。Its process schematic is as shown in Figure 2。
Blast welding is that chemistry of explosives can after repeatedly continuous print transmits, absorbs, changes and distributes, the metal interface in district to be combined is formed a thin layer there is plastic deformation, fusing and diffusion, and the welding transition district of wave character, thus cause new technology and the new technique of a kind of metal solder of strong combination。
This new technology and new technique can explode welding except same metal, its maximum advantage is in that the blast welding between dissimilar metal, such as rustless steel-steel, copper-steel, nickel-steel, some material such as titanium-steel, aluminum-steel cannot realize by other traditional welding method, except blast welding。The bond strength of dissimilar metal is usually less than in base material relatively weak person, and therefore this kind of composite can stand follow-up smoothing, reel, punching press, spinning, drawing, rolling and turning, the processing of boring equal pressure and machining。
The invention has the beneficial effects as follows:
The obtained composite plate of the present invention presses NB/T47002.3-2009 " pressure vessel Explosive Welding Composite Plates: titanium-steel composite board " one-level (B1), qualified。Wherein coating titanium material thickness is about 12mm, breaches the regulation of 2～10mm of this standard, is pioneering；Composite plate compound interface in conjunction with shear strength more than 231MPa, meet the requirement of intensity in using；Bi-material decay resistance is all fine, is resistant to the corrosion of the similar sea water of highly corrosive and the medium compared with the similar sea water of highly corrosive respectively。
Accompanying drawing explanation
The blast process that Fig. 1 is the present invention stacks schematic diagram。
Fig. 2 is the Explosive Welding process schematic of the present invention。
In figure, 1-detonator, 2-high explosive, the main explosive of 3-, 4-medicine frame, 5-buffer protection layer, 6-cladding plate, 7-gap post, 8-substrate, 9-sand drift, 10-ground。
Detailed description of the invention
Embodiment 1
Step and the process of Explosive Welding process Installation are as follows:
1, heap moulds blast welding basis
With spade, the sand sieved heap being moulded the sand heap that top surface area as shown in Figure 1 is identical with substrate, this sand heap is the chiltern basis of blast welding。It is followed successively by from top to bottom: detonator 1, high explosive 2, main explosive 3, medicine frame 4, buffer protection layer 5, cladding plate 6, gap post 7, substrate 8, sand drift 9, ground 10。
2, substrate is laid
Substrate is lifted and puts or hang onto Sha Duishang, additionally by gauze wiping one time again of the welding surface of substrate, and with alcohol washes, to ensure the cleaning on this surface。Substrate adopts two phase stainless steel。
3, gap post is laid
To be combined of substrate places the metal gap thing of some, shape and size uniformly, so it is ensured that whole clearance distance after cladding plate stacks。
4, cladding plate is laid
First by clean to cladding plate welding surface gauze and alcohol washes, then being lifted and put or hang onto on substrate, cladding plate should uniformly, suitably than the size that substrate periphery has more。Cladding plate adopts titanium plate。
5, buffer protection layer is smeared
Waterglass spreads upon the upper surface of cladding plate with hairbrush or cylinder, and this upper surface will contact explosive, and this thin-layer substance mass-energy plays buffering blast load, protection clad surface avoids oxidation and the effect of damage。
6, medicine frame is placed
The medicine frame of wooden or other material being made ready beforehand for is put into above cladding plate, just blocks with paper slip if any gap。
7, main explosive is laid
By main explosive instrument, it is preferred to explosive shovel is used as medicine in frame by wooden instrument, then is struck off by main explosive with scraper plate, checks web everywhere at any time, ensures that web is identical everywhere as far as possible。Main explosive thickness is 120-130mm, explosion velocity 2300～2500m/s, brisance >=10mm, induced detonation >=3cm。Composition is ammonium nitrate 90wt%, diesel oil 6wt% and silicates regulator 4wt%
8, the ignition charge of high explosion velocity is laid
In order to improve ignition and the propagation of explosion ability of main explosive, in the geometric center position of cladding plate, lay the high explosion velocity ignition charge of 50～200g, it is also possible to cloth is put into precalculated position before main explosive lays。
9, detonator is assigned
Detonator is inserted on the position of primer after putting well by primer and main explosive cloth, and is inserted into the end and contacts with cladding plate surface。
10, detonating cord is connect
When using electric cap, the two of electric cap payment to a porter are connected with two strands of wires of detonating cord。So far, the process Installation of blast welding completes。
In the explosive clad plate obtained, the thickness of titanium plate is 12mm, and composite plate compound interface is 231MPa in conjunction with shear strength。
Embodiment 2
Buffer protection layer is butter composition, and main explosive thickness is 140-150mm, explosion velocity 2300～2500m/s, brisance >=10mm, induced detonation >=3cm。Composition is that ammonium nitrate 95wt%, diesel oil 3wt% and silicates regulator 2wt%. adopt 8# instant electric detonator to detonate。
In the explosive clad plate obtained, the thickness of titanium plate is 12.5mm, and composite plate compound interface is 238MPa in conjunction with shear strength。
Other are with embodiment 1.
Embodiment 3
Buffer protection layer is waterglass composition, and main explosive thickness is 135mm, explosion velocity 2300～2500m/s, brisance >=10mm, induced detonation >=3cm。Composition is ammonium nitrate 93wt%, diesel oil 4wt% and silicates regulator 3wt%.
In the explosive clad plate obtained, the thickness of titanium plate is 12.1mm, and composite plate compound interface is 242MPa in conjunction with shear strength。
Other are with embodiment 1.
Embodiment 4
Buffer protection layer is butter composition, and main explosive thickness is 130mm, explosion velocity 2300～2500m/s, brisance >=10mm, induced detonation >=3cm。Composition is ammonium nitrate 92wt%, diesel oil 4wt% and silicate 4wt%.
In the explosive clad plate obtained, the thickness of titanium plate is 12.2mm, and composite plate compound interface is 240MPa in conjunction with shear strength。
Other are with embodiment 1.
By repeatedly Explosion composite, to the composite plate obtained by NB/T47002.3-2009 " pressure vessel Explosive Welding Composite Plates: titanium-steel composite board " one-level (B1) requirement, adjust explosion technology parameter after calculating by analysis, finally give suitable explosion technology parameter, rational explosive preparation program。
According to properties of materials, repeatedly after heat treatment, by ultrasound investigation, by JB/T4730.3-2005, bonding state meets NB/47002.3-2009B1 level, the requirement of laminating rate 100%, has finally made the Technology for Heating Processing of complete set。
Along with the arrival of marine economy, the cause come into contacts with ocean gets more and more, and therefore, the material developing this special high temperature resistant corrosive properly operating mode is more and more meaningful, it should have good application prospect。
Claims (10)
1. a composite plate for high temperature resistant seawater corrosion, including cladding plate and substrate, it is characterised in that: described cladding plate and substrate are dissimilar metal；Described composite plate compound interface reach 231MPa in conjunction with shear strength。
2. the composite plate of high temperature resistant seawater corrosion according to claim 1, it is characterised in that described cladding plate is titanium plate, described substrate is 2205 two-way rustless steels；The thickness of described titanium plate is 12mm ± 0.5mm。
3. a production method for the composite plate of high temperature resistant seawater corrosion, including the cladding plate of the substrate on top and bottom, it is characterised in that the method includes:
(1) sand drift or sand heap have been piled on the ground；
(2) substrate of surface cleaning is put on sand drift or sand heap；
(3) on to be combined of substrate, place the metal gap post of some, shape and size uniformly；
(4) cladding plate after cleaning is placed on the post of gap；Described substrate and cladding plate are not same metal；
(5) smearing buffer protection layer at described cladding plate upper surface, described buffer protection layer is made up of lubricating oil or water-soluble binder；
(6) medicine frame is placed on the buffer protection layer of described cladding plate；Placing main explosive in described medicine frame, described main explosive thickness in medicine frame is essentially identical；
(7) in the geometric center position of cladding plate or close to geometric center position, the ignition charge of 50～200g is laid；Or first place ignition charge, then place main explosive；
(8) insert detonator in ignition charge position, and detonator is contacted with cladding plate surface；
(9) when using electric cap, the payment to a porter of electric cap is connected with the wire of detonating cord；Through one or many explosion, obtain explosive clad plate。
4. the production method of the composite plate of high temperature resistant seawater corrosion according to claim 3, it is characterised in that step (4) described gap post is pad。
5. the production method of the composite plate of high temperature resistant seawater corrosion according to claim 3, it is characterised in that step (5) described lubricating oil is selected from butter；Described water-soluble binder is selected from waterglass。
6. the production method of the composite plate of high temperature resistant seawater corrosion according to claim 3, it is characterised in that the thickness of the described main explosive of step (6) is 100-200mm；The thickness of the described main explosive of step (6) is 120-150mm。
7. the production method of the composite plate of high temperature resistant seawater corrosion according to claim 3, it is characterised in that the described main explosive of step (6) is low blasting speed brisant explosive。
8. the production method of the composite plate of high temperature resistant seawater corrosion according to claim 7, it is characterised in that described explosive parameter: explosion velocity 2300～2500m/s, brisance >=10mm, induced detonation >=3cm。
9. the production method of the composite plate of high temperature resistant seawater corrosion according to claim 7, it is characterised in that it is ammonium nitrate 88-96wt%, diesel oil 2-6wt% and silicates regulator 2-6wt% that described low blasting speed brisant explosive includes Main Ingredients and Appearance。
10. the production method of the composite plate of high temperature resistant seawater corrosion according to claim 3, it is characterised in that step (7) described ignition charge is detonating explosive。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410712572.2A CN105689882A (en) | 2014-11-28 | 2014-11-28 | Composite board resistant to high-temperature seawater corrosion and production method thereof |
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| CN201410712572.2A CN105689882A (en) | 2014-11-28 | 2014-11-28 | Composite board resistant to high-temperature seawater corrosion and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108145131A (en) * | 2018-02-09 | 2018-06-12 | 中国科学技术大学 | A kind of production method of heat exchanger being combined based on vacuum hot melt with Explosion composite |
| CN111215855A (en) * | 2020-02-20 | 2020-06-02 | 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 |
| CN113601000A (en) * | 2021-08-18 | 2021-11-05 | 宝鸡市钛程金属复合材料有限公司 | Explosive welding method for hard and brittle materials |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108145131A (en) * | 2018-02-09 | 2018-06-12 | 中国科学技术大学 | A kind of production method of heat exchanger being combined based on vacuum hot melt with Explosion composite |
| CN108145131B (en) * | 2018-02-09 | 2024-02-09 | 中国科学技术大学 | Manufacturing method of heat exchanger based on combination of vacuum hot melting and explosion |
| CN111215855A (en) * | 2020-02-20 | 2020-06-02 | 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 |
| 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 |
| CN113601000A (en) * | 2021-08-18 | 2021-11-05 | 宝鸡市钛程金属复合材料有限公司 | Explosive welding method for hard and brittle materials |
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