CN1345644A - Method for making explosion cladding board with large width - Google Patents
Method for making explosion cladding board with large width Download PDFInfo
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- CN1345644A CN1345644A CN 00123052 CN00123052A CN1345644A CN 1345644 A CN1345644 A CN 1345644A CN 00123052 CN00123052 CN 00123052 CN 00123052 A CN00123052 A CN 00123052A CN 1345644 A CN1345644 A CN 1345644A
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Abstract
The method for making large-breadth explosion composition plate is mainly characterized by that an initiator bar with high detonation velosity and stable initiation function is arranged along a long edge of cladding plate, and then the mainly-charged explosive for explosive welding can be detonated by said initiator bar along the length direction of the plate, so that it can avoid the unsatable detonation and unexplosive problem. At the same time its initiation mode and detonation direction are changed so as to shorten the discharge distance of welding yet current between base plate and cladding plate, so that said invented method can be used for welding various long composite plate, and can raise quality of large-breadth composite plate product.
Description
The invention belongs to the manufacturing field of composite metal plate, specially refer to the method for the big plate width of cloth of explosion welding technique production composite plate.
At present, explosive welding (or it is compound to explode) method is the main method of producing various composite metal plates.Adopt explosion welding method can produce various composite boards such as stainless steel-steel, aluminium-steel, titanium-steel, copper-steel.These composite boards are mainly used in the container of industries such as chemical industry, oil, hydraulic engineering and the manufacturing of equipment.In the manufacturing of these equipment, especially for tun, require to adopt the composite plate of the big plate width of cloth of trying one's best, can reduce fusion length so in large quantities, reduce the welding expense, reduce the defective that produces in the welding and shorten the device fabrication cycle.For example, the shell ring that adopts one weld seam to roll 3 meters of diameters just requires composite plate to reach 9.42 meters, pressure container standard requires again in the long two ends blanking experimental material of plate performance, therefore composite plate blanks length will reach more than 10 meters, if adopt the composite plate below 10 meters just must weld weld seam one, welding that doubles and survey fees are used more.And existing explosive welding (EW) connection, the general mid point method of ignition that adopts when making composite plate is an example with stainless steel clad plate commonly used, 7～8 meters long is the upper limit.This performance mainly due to the civilian nitrolite of low explosion velocity that adopts determines, the steady detonation length of general nitrolite has only about 4 meters, adopt the mid point detonation mode can only produce 7～8 meters long composite plates, near quick-fried problem usually occurring putting out, form not recombination region of large tracts of land at two ends with the plate that surpasses this length.And low density materials such as titanium plate, aluminium sheet are carried out explosive welding, and because the compound plate quality of materials is lighter, above-mentioned detonation instability problem is just more outstanding, the long upper limit of the plate of explosive welding only is about 5～6 meters usually.Simultaneously, when adopting single-point to detonate, can stay the not recombination region of detonating under the fire point, can not reach 100% recombination rate, for requiring the high composite plate of quality also usually to need to carry out the fire point repair welding, this has not only increased manufacturing procedure, and also comparatively difficult for a lot of material process of patch weld.When 15CrMoV is the stainless steel clad plate repair welding of basic unit, be easy to occur weld crack, need strict preheating, retarded cooling process; For titanium, aluminium is the clad steel plate of multiple layer, because the reaction of unmanageable intermetallic almost can't be used the conventional method repair welding.For above-mentioned reasons, limited the explosive clad plate production of big plate panel height quality.
The objective of the invention is, a kind of explosion welding method of big plate width of cloth composite plate is provided, when solving explosive welding the detonation of explosive unstable with put out quick-fried problem, eliminate the not recombination region of detonating in the composite plate, reduce to weld jet and discharge distance between basic compound plate.
Realize that technical scheme of the present invention is, parallel method according to routine carries out the explosive welding layout, but do not adopt the single-point detonation mode, change into and arrange the high explosion velocity of the steady detonation medicinal strip that detonates along the long limit of composite plate, with this medicinal strip the main blasting charge of explosive welding is implemented long limit and detonate.The detonation stability of main like this explosive just can not influence the explosive welding of plate length direction, and just influences the weld width direction.Discharge distance between basic compound plate for reducing to weld jet, the steady detonation of the medicinal strip that guarantees to detonate, the explosion velocity of the medicinal strip that detonates is between 4800 meter per seconds to 9000 meter.The medicinal strip that detonates is arranged on compound edges of boards portion, detonates not that the land does not overlap the land with the edge effect of general explosive clad plate, can excise after explosive welding, does not influence the quality of explosive welding composite plate.
Know-why of the present invention is as follows:
Can only adopt the substantially parallel explosive welding of basic compound plate to arrange for the explosive clad plate production of the big plate width of cloth.Simultaneously, mechanism decision by explosive welding, parallel basic compound plate is arranged, guarantee the success of explosive welding, the explosive welding master blasting charge that is adopted must be the low explosive that is lower than materials to be welded volume wave sound speed, explosive mainly adopts ammonium nitrate explosive, and its explosion velocity is in 2000～4000 meter per second scopes.Yet the steady detonation length of this class explosive is shorter, and this explosive steady detonation length of general 20～50 millimeters thickness only is 3～4 meters, near or surpass the detonation meeting unstability of this length explosive or put out quick-fried.On the other hand, RDX (RDX), Tai'an (PETN) class detonating explosive all can be kept stable detonation, on detonation length without limits.For example, 12 gram/Mi Taian powder charge primacords commonly used, its explosion velocity is about 6900 meter per seconds, can keep the steady detonation more than 100 meters.But the explosion velocity of this class detonating explosive is higher than the materials to be welded velocity of sound again, therefore can not be used for explosive welding.If be arranged in the long limit of compound plate with high explosion velocity medicinal strip, after detonating more arbitrarily on the medicinal strip length of detonating, the detonation of the medicinal strip that detonates is with stable propagation; Under the drive of the medicinal strip that detonates, but the main dress low explosive of whole composite plate equal steady detonation along its length, and the detonation wave that welds main blasting charge is just with chevron expansion, propagation (as among Fig. 2 6).The compound plate and the substrate of detonation driven bump, and impingement area is to move with the detonation wave similar shapes, and promptly impingement area also is with the chevron expansion, and impingement area is identical with the normal velocity of detonation wave chevron expansion, is the explosion velocity of main charge.Just with the ejection of chevron normal direction, the major part of jet can spray along plate width direction Han Jie interface jet like this.The finished product composite plate of Zhi Zaoing also has feature in this way, and the interface ripple direction in the composite plate is similar to detonation wave, also is the chevron expansion.
As to establish the medicinal strip explosion velocity that detonates be D
H, main blasting charge explosion velocity D, the detonation corrugated in the main blasting charge can be with the expansion of mountain type, and the welding jet is with the normal direction ejection on detonation corrugated.As the plate length and width is W, and the θ angle is before the detonation wave and the angle of plate length direction, then has:
sinθ＝D/D
H
If the detonation length of detonation wave also is the movement length L that jet is discharged
J, have:
W≤L
J≤W/cosθ
If the steady detonation length of main blasting charge is 4 meters,, promptly be W/cos θ=4 meter, as D/D by the top notion of setting forth
H=3, just can obtain the wide W=3.77 rice of the welding plate of the inventive method; As D/D
H=1.2, but the wide W=2.21 rice of welded plate.This shows that the high explosion velocity medicinal strip explosion velocity that the uses height of should trying one's best so not only can weld the composite plate of broad in the welding method of being invented, and the welding jet is discharged along short path.So the high explosion velocity medicinal strip explosion velocity that is adopted is not less than 4800 meter per seconds, between 9000 meter per seconds, should adopt the good RDX of steady detonation performance, Tai'an, trinitrotoluene or their mixture at 4800 meter per seconds as far as possible.
Advantage of the present invention is, the instability problem of having avoided the detonation of explosive overlength with put out quick-fried problem, realize the explosive welding of overlength, super large plate width of cloth composite plate smoothly.Compare with the common single-point explosion welding technique that detonates, because the change of detonation direction, shortened the welding jet and discharged distance between basic compound plate, help the eliminating of jet, can improve the welding quality of composite plate.Because the technology that this invention is adopted is that fire point is arranged in beyond the substrate, the land of detonating on the composite plate after the welding not can be excised easily, so need not to carry out the fire point repair welding, is more suitable for the manufacturing of high recombination rate composite plate.
Description of drawings is as follows:
Fig. 1 is that sectional view is arranged in explosive welding of the present invention.
Among the figure, 1. detonating capsule; 2. high explosion velocity medicinal strip; 3. the main blasting charge of explosive welding; 4. complex laminate; 5. basal plate.
Fig. 2 is the vertical view that explosive welding of the present invention is arranged.
Among the figure, the oblique line shown in 6 is a detonation wave wave surface in the main blasting charge, has also represented impingement area and EXPLOSIVE WELDING INTERFACE ripple direction between basic compound plate simultaneously; The θ angle is before the detonation wave or the angle of boundary wave and plate length direction; The medicinal strip explosion velocity that detonates is D
HMain blasting charge explosion velocity D.
Below be described in detail the inventive method and make the most preferred embodiment of explosion cladding board with large width.
Example 1:
Weld the powdered ammonium nitrate-fuel oil explosive that main blasting charge uses 30 millimeters, explosion velocity D=2960 meter per second, 11.04 meters medicinal strips that detonate of length are along long arrange (as the Fig. 2) of plate, and explosive is that 5 * 20 millimeters RDX is main plastic explosive, explosion velocity D
H=6500 meter per seconds, fire point are placed on the mid point of the medicinal strip that detonates.Compound plate is 0Cr19Ni9Ti (304L) corrosion resistant plate of 3 millimeters thick, and plate is wide 2.46 meters, long 11.04 meters of plate; Substrate is the 15CrMoR steel plate, and thickness is 40 millimeters, and is wide 2.44 meters, and plate is long 11.04 meters, 6 millimeters in basic compound plate gap, and compound plate is arranged in the medicinal strip limit (as Fig. 1) of detonating than wide 20 millimeters of going out of substrate.After the explosive welding, excise 20 millimeters slab edge, composite plate is 2.4 meters wide, and 11 meters long, and carrying out the ultrasonic inspection inspection by GB/T8165-1997 is 1 grade of composite plate (recombination rate is 100%).The afterbody of composite plate checks that through dissecting its explosive welding ripple and plate length direction are 20 °～30 °
About angle.
Example 2:
Compound plate is 0Cr19Ni9Ti (304L) corrosion resistant plate of 3 millimeters thick, and plate is wide 2.46 meters, long 9.64 meters; Substrate is the 15CrMoR steel plate, and thickness is 42 millimeters, and is wide 2.44 meters, long 9.64 meters.The layout of base compound plate is welded the powdered ammonium nitrate-fuel oil explosive that main explosive adopts 30 millimeters, explosion velocity D with example 1
H=3000 meter per seconds, the medicinal strip that detonates that length is 9.64 meters arranges that along plate is long the medicinal strip that detonates is 10 * 30 millimeters powdery RDX and an ammonium oil mixture, the middle part is installed with 9.64 meters primacord, primacord explosion velocity D
H=6900 meter per seconds, fire point are placed on the head of the medicinal strip that detonates.After the explosive welding, through cutting edge 20 millimeters, composite plate is 9.6 * 2.4 meters, and it is 1 grade of composite plate that composite plate is carried out the ultrasonic inspection inspection by GB/T8165-1997.The afterbody of composite plate checks that through dissecting its explosive welding ripple and plate length direction are 20 °～30 °
About angle.
Claims (1)
1. the manufacture method of an explosion cladding board with large width, it is characterized in that, the high explosion velocity that steady detonation is set along the long limit of the compound plate medicinal strip that detonates, along the plate length direction main blasting charge of welding that detonates, the explosion velocity of the medicinal strip that detonates is 4800 meter per second to 9000 meter per seconds by the medicinal strip that detonates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123052 CN1242867C (en) | 2000-09-29 | 2000-09-29 | Method for making explosion cladding board with large width |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123052 CN1242867C (en) | 2000-09-29 | 2000-09-29 | Method for making explosion cladding board with large width |
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| Publication Number | Publication Date |
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| CN1345644A true CN1345644A (en) | 2002-04-24 |
| CN1242867C CN1242867C (en) | 2006-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 00123052 Expired - Fee Related CN1242867C (en) | 2000-09-29 | 2000-09-29 | Method for making explosion cladding board with large width |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308463A (en) * | 2014-08-26 | 2015-01-28 | 西安天力金属复合材料有限公司 | Preparation method of super-long titanium/pipeline steel composite plate for oil-gas pipeline |
| CN104690411A (en) * | 2015-03-13 | 2015-06-10 | 安徽宝泰特种材料有限公司 | Explosive cladding structure of aluminum-titanium steel composite board and method for preparing aluminum-titanium steel composite board |
| CN105458625A (en) * | 2015-12-11 | 2016-04-06 | 舞钢神州重工金属复合材料有限公司 | Production process for large-thickness Cr and Mo hydrogenating steel explosive welding composite plate for pressure vessel |
| CN107470770A (en) * | 2017-08-10 | 2017-12-15 | 冯健 | A kind of explosive welding production technology of over-long specification composite metal plate |
-
2000
- 2000-09-29 CN CN 00123052 patent/CN1242867C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308463A (en) * | 2014-08-26 | 2015-01-28 | 西安天力金属复合材料有限公司 | Preparation method of super-long titanium/pipeline steel composite plate for oil-gas pipeline |
| CN104690411A (en) * | 2015-03-13 | 2015-06-10 | 安徽宝泰特种材料有限公司 | Explosive cladding structure of aluminum-titanium steel composite board and method for preparing aluminum-titanium steel composite board |
| CN105458625A (en) * | 2015-12-11 | 2016-04-06 | 舞钢神州重工金属复合材料有限公司 | Production process for large-thickness Cr and Mo hydrogenating steel explosive welding composite plate for pressure vessel |
| CN107470770A (en) * | 2017-08-10 | 2017-12-15 | 冯健 | A kind of explosive welding production technology of over-long specification composite metal plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1242867C (en) | 2006-02-22 |
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Assignee: Dalian Explosive Working Research Instit Assignor: Dalian University of Technology Contract fulfillment period: 2007.1.10 to 2012.1.10 contract change Contract record no.: 2008210000041 Denomination of invention: Method for making explosion cladding board with large width Granted publication date: 20060222 License type: Exclusive license Record date: 2008.11.3 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.1.10 TO 2012.1.10; CHANGE OF CONTRACT Name of requester: DALIAN EXPLOSION PROCESS RESEARCH INSTITUTE Effective date: 20081103 |
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