CN102179617A - Explosive welding process for internal or external explosion of composite pipe joint - Google Patents
Explosive welding process for internal or external explosion of composite pipe joint Download PDFInfo
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- CN102179617A CN102179617A CN2011101391526A CN201110139152A CN102179617A CN 102179617 A CN102179617 A CN 102179617A CN 2011101391526 A CN2011101391526 A CN 2011101391526A CN 201110139152 A CN201110139152 A CN 201110139152A CN 102179617 A CN102179617 A CN 102179617A
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Abstract
The invention relates to an explosive welding process for internal or external explosion of a composite pipe joint. The process comprises the following steps of: performing polishing treatment on the internal surface of a basic pipe and the external surface of a composite pipe; assembling the basic pipe with the composite pipe, wherein the basic pipe is arranged outside, the composite pipe is arranged inside, and the gap between the basic pipe and the composite pipe is 1 mm; putting the assembled basic pipe and composite pipe in an external medicine box of which the bottom is provided with a base plate, wherein an internal medicine box is arranged in the middle of the composite pipe; filling 10 mass percent of heavy diesel fuel into the space between the composite pipe and the internal medicine box and the space between the basic pipe and the external medicine box; fully mixing; sealing; storing powdery extrusion ammonium oil low-velocity explosives for 48 hours; arranging powdery extrusion ammonium oil high-velocity explosives without the heavy diesel oil above the low-velocity explosives; and detonating the high-velocity explosives by using a detonator to finish welding and form a clad pipe. In the subsequent machining and welding processes, interface cracking and layering phenomena can be prevented.
Description
Technical field
The present invention relates to the explosive welding metallic composite and make the field, be specifically related to execute quick-fried explosion weld process inside and outside a kind of multiunit tube joint that welds zirconium 60702/ stainless steel 321.
Background technology
Zirconium 60702 has good nuclearity energy, is the indispensable structural material of atomic energy industry.In order in nuclear engineering is built, to save this rare and valuable metal material to reduce construction costs, can in nuclear reactor, use zirconium alloy pipe, and use relatively inexpensive stainless steel tube out-of-pile, so just produced the tubing Welding Problems of two kinds of different physics and chemical property.Explosive welding zirconium/stainless steel composite pipe joint can address this problem effectively: the zirconium tube portion welding of the zirconium Guan Keyu multiunit tube joint in the nuclear reactor; And the outer stainless steel tube of nuclear reactor can weld with the stainless steel joint for pipeline of multiunit tube joint, thereby realizes in the nuclear reactor outer by the purpose of zirconium tube transitions to stainless steel tube to nuclear effectively.
As everyone knows, the generally multiple layer of explosive welding metal composite pipe is thin, basic unit is thicker, adopts outer quick-fried or internal explosion process production usually, when multiple layer during at inwall, should adopt internal explosion process, otherwise then should adopt external explosion process.The metal composite pipe that is used to make pipe joint is shorter, generally adopts internal explosion process.When adopting internal explosion process, because the instantaneous pressure of explosive detonation ripple is very big, the pipe joint that explode after compound very easily ftractures, and then becomes the blast fragment in the time of seriously, causes irremediable economic loss and serious security incident.So outer tube need be used to absorb and transmits the dump energy of detonation wave according to calculate making the privacy protection mould, guarantees that multiple tube has set size and dimension, prevent that explosive welding multiple tube or pipe joint are out of shape excessive or burst.Because explosion velocity of explosive increases with the increase of density, to multiple tube or pipe joint cloth medicine the time, the situation that the bottom explosive density is far longer than the top explosive density inevitably appears, will occur explosion velocity of explosive or the detonation wave pressure application of force difference to multiple tube or pipe joint top and bottom like this, undesirable taper dimensions appears in multiple tube after the explosive welding or pipe joint.In order to prevent that taper dimensions appears in multiple tube and pipe joint after the explosive welding, usually make pipe mold in the positive taper according to charge depth, also promptly reduce the explosive payload of multiple tube or pipe joint bottom, with the explosion velocity that guarantees explosive or detonation wave pressure upper end to lower end unanimity from pipe as far as possible.Like this, though can guarantee the welding quality and the preliminary dimension of explosive welding multiple tube or pipe joint to a certain extent, but on inner and outer pipe Mold Making and cloth prescription formula, seem comparatively complicated, not only the Mold Making cycle is long, cost is big, and the inner and outer pipe mould is out of shape serious even broken after explosive welding, not reproducible utilization has strengthened the explosive welding cost of multiple tube or pipe joint.For this reason, must seek the explosive welding that effective method is more economically realized metal composite pipe or pipe joint.
Summary of the invention
Execute quick-fried explosion weld process inside and outside the realization zirconium 60702 of the object of the present invention is to provide that a kind of technology is simple, production cost is low, the process-cycle is short and the multiunit tube joint of stainless steel 321 multiunit tube joint metallurgical binding.
Technical scheme of the present invention is to realize like this: execute quick-fried explosion weld process inside and outside a kind of multiunit tube joint, its processing step is as follows:
1) parent tube is managed processing again: parent tube inner surface and multiple tube outer surface are carried out polishing, polish standard be parent tube and multiple pipe treat faying face roughness≤0.0016mm, burnishing surface with gasoline cleaning parent tube and multiple pipe uses clean packaging wrapper burnishing surface then;
2) parent tube explosive welding: with 1) and manage not burnishing surface brushing butter layer again, assemble parent tube and multiple pipe then, parent tube outside, multiple pipe is interior, gap between parent tube and the multiple pipe is 1mm, be provided with in the outer medicine box of backing plate with the parent tube after the assembling with bottom pipe is positioned over again, multiple pipe middle part is provided with interior medicine box, filling adds by mass ratio and seals the oily low velocity explosive of the expanded ammonium of the powdery of depositing 48 hours after 10% heavy diesel fuel also fully mixes between multiple pipe and interior medicine box and between parent tube and the outer medicine box, above low velocity explosive, arrange the expanded ammonium innage speed of the powdery that does not add heavy diesel fuel explosive then, use the cap sensitive detonating explosive, finish welding, form multiple tube;
3) turning processing is handled: with 2) in the good multiple tube two ends turning of welding remove 2.5mm, then with the multiple pipe turning on the multiple tube to the compound cross-section place, turning length is 30mm, to the compound cross-section place, turning length is 30mm with the parent tube turning on the multiple tube.
Described 1) parent tube is selected 321 stainless steel pipes for use in, and its wall thickness 4mm, internal diameter are 50mm, and length is 145mm, and described multiple pipe adopts 60702 zirconium pipe tubing, and its wall thickness 1.5mm, internal diameter are 45mm, and length is 145mm.
Described 2) the medicine box external diameter is 15mm, highly is 145mm in, and described outer medicine box internal diameter is 88mm, highly is 160mm.
Described 2) butter layer thickness 0.1 mm to 0.2mm in.
Described 2) detonator is No. 8 electric caps in.
The present invention has following good effect: the present invention orders and executes quick-fried explosion weld process inside and outside the employing with parent tube 321 stainless steel pipes with manage 60702 zirconium pipe tubing again and combine, through follow-up machining, final a kind of stainless steel, the zirconium transit joint material of forming, execute quick-fried method inside and outside the employing, make inside and outside multiunit tube joint in the explosive welding process, the inside and outside stressed unanimity in top and bottom has avoided the compound back of product blast to produce the possibility of centrum; Traditional relatively explosive welding multiunit tube joint technology is saved and has been simplified the inside and outside Mold Making of very complicated and cloth pharmaceutical worker skill, and life cycle of the product is shortened, and cost reduces greatly; Adopt powder charge explosion velocity in top to be higher than the inside and outside powder charge explosion velocity of multiunit tube joint, be beneficial to the eliminating fully of gas in the faying face, realize the metallurgical binding of inside and outside multiunit tube joint.In follow-up machining and welding, interface cracking and lamination can not appear.
Description of drawings
Fig. 1 is for the present invention inside and outside medicine box and parent tube and manage the arrangement schematic diagram again,
Fig. 2 is the composite pipe structure schematic diagram.
The specific embodiment
As shown in Figure 1, 2, execute quick-fried explosion weld process inside and outside a kind of multiunit tube joint, its processing step is as follows:
1) parent tube is managed processing again: to parent tube 3 inner surfaces with manage 4 outer surfaces again and carry out polishing, polish standard be parent tube 3 and manage again 4 treat faying face roughness≤0.0016mm, burnishing surface with gasoline cleaning parent tube and multiple pipe uses clean packaging wrapper burnishing surface then;
2) parent tube 3 explosive welding: with 1) and manage 4 burnishing surface brushing butter layers not again, assemble parent tube 3 then and manage 4 again, parent tube 3 outside, manage 4 again interior, parent tube 3 and the gap of managing again between 4 are 1mm, with the parent tube 3 after the assembling with manage 4 again and be provided with in the outer medicine box 1 of backing plate 6 bottom being positioned over, manage 4 middle parts again and be provided with interior medicine box 7, manage again 4 with interior medicine box 7 between and parent tube 3 with outside fill between the medicine box 1 add 10% heavy diesel fuel by mass ratio and fully mix after seal the oily low velocity explosive 2 of the expanded ammonium of the powdery of depositing 48 hours, above low velocity explosive, arrange the expanded ammonium innage speed of the powdery that does not add heavy diesel fuel explosive 8 then, use detonator 5 to ignite detonating explosive 8, finish welding, form multiple tube;
3) turning processing is handled: with 2) in the good multiple tube two ends turning of welding remove 2.5mm, then with the multiple pipe turning on the multiple tube to the compound cross-section place, turning length is 30mm, to the compound cross-section place, turning length is 30mm with the parent tube turning on the multiple tube.
Described 1) parent tube 3 is selected 321 stainless steel pipes for use in, and its wall thickness 4mm, internal diameter are 50mm, and length is 145mm, described 4 employings, the 60702 zirconium pipe tubing of managing again, and its wall thickness 1.5mm, internal diameter are 45mm, length is 145mm.Described 2) medicine box 7 external diameters are 15mm, highly are 145mm in, and described outer medicine box 1 internal diameter is 88mm, highly is 160mm.Described 2) butter layer thickness 0.1 mm to 0.2mm in.Described 2) detonator 5 is No. 8 electric caps in.
The present invention orders and executes quick-fried explosion weld process inside and outside the employing with parent tube 321 stainless steel pipes with manage 60702 zirconium pipe tubing again and combine, through follow-up machining, final a kind of stainless steel, the zirconium transit joint material of forming, execute quick-fried method inside and outside the employing, make inside and outside multiunit tube joint in the explosive welding process, the inside and outside stressed unanimity in top and bottom has avoided the compound back of product blast to produce the possibility of centrum; Traditional relatively explosive welding multiunit tube joint technology is saved and has been simplified the inside and outside Mold Making of very complicated and cloth pharmaceutical worker skill, and life cycle of the product is shortened, and cost reduces greatly; Adopt powder charge explosion velocity in top to be higher than the inside and outside powder charge explosion velocity of multiunit tube joint, be beneficial to the eliminating fully of gas in the faying face, realize the metallurgical binding of inside and outside multiunit tube joint.In follow-up machining and welding, interface cracking and lamination can not appear.
Claims (5)
1. execute quick-fried explosion weld process inside and outside a multiunit tube joint, it is characterized in that, its processing step is as follows:
1) parent tube is managed processing again: parent tube inner surface and multiple tube outer surface are carried out polishing, polish standard be parent tube and multiple pipe treat faying face roughness≤0.0016mm, burnishing surface with gasoline cleaning parent tube and multiple pipe uses clean packaging wrapper burnishing surface then;
2) parent tube explosive welding: with 1) and manage not burnishing surface brushing butter layer again, assemble parent tube and multiple pipe then, parent tube outside, multiple pipe is interior, gap between parent tube and the multiple pipe is 1mm, be provided with in the outer medicine box of backing plate with the parent tube after the assembling with bottom pipe is positioned over again, multiple pipe middle part is provided with interior medicine box, filling adds by mass ratio and seals the oily low velocity explosive of the expanded ammonium of the powdery of depositing 48 hours after 10% heavy diesel fuel also fully mixes between multiple pipe and interior medicine box and between parent tube and the outer medicine box, above low velocity explosive, arrange the expanded ammonium innage speed of the powdery that does not add heavy diesel fuel explosive then, use the cap sensitive detonating explosive, finish welding, form multiple tube;
3) turning processing is handled: with 2) in the good multiple tube two ends turning of welding remove 2.5mm, then with the multiple pipe turning on the multiple tube to the compound cross-section place, turning length is 30mm, to the compound cross-section place, turning length is 30mm with the parent tube turning on the multiple tube.
2. execute quick-fried explosion weld process inside and outside the multiunit tube joint according to claim 1, it is characterized in that: parent tube is selected 321 stainless steel pipes for use described 1), its wall thickness 4mm, internal diameter is 50mm, length is 145mm, and described multiple pipe adopts 60702 zirconium pipe tubing, its wall thickness 1.5mm, internal diameter is 45mm, and length is 145mm.
3. execute quick-fried explosion weld process inside and outside the multiunit tube joint according to claim 1, it is characterized in that: the medicine box external diameter is 15mm, highly is 145mm in described 2), and described outer medicine box internal diameter is 88mm, highly is 160mm.
4. execute quick-fried explosion weld process inside and outside the multiunit tube joint according to claim 1, it is characterized in that: butter layer thickness 0.1 mm to 0.2mm described 2).
5. execute quick-fried explosion weld process inside and outside the multiunit tube joint according to claim 1, it is characterized in that: detonator is No. 8 electric caps described 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110139152 CN102179617B (en) | 2011-05-27 | 2011-05-27 | Explosive welding process for internal or external explosion of composite pipe joint |
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| CN 201110139152 CN102179617B (en) | 2011-05-27 | 2011-05-27 | Explosive welding process for internal or external explosion of composite pipe joint |
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| CN102179617A true CN102179617A (en) | 2011-09-14 |
| CN102179617B CN102179617B (en) | 2013-04-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290602A (en) * | 2015-11-19 | 2016-02-03 | 中钢集团马鞍山矿山研究院有限公司 | Method for preparing explosive cladding metal bar |
| CN105436689A (en) * | 2014-08-21 | 2016-03-30 | 中国科学技术大学 | Explosive press fitting method for surface-roughened pipes |
| CN111085769A (en) * | 2019-12-18 | 2020-05-01 | 安徽建筑大学 | Manufacturing process of explosive composite pipe with negative pressure cavity based on liquid explosive |
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| JPH03210978A (en) * | 1990-01-16 | 1991-09-13 | Hitachi Ltd | Titanium or titanium alloy/stainless steel pipe joint and its manufacture |
| CN1513637A (en) * | 2003-08-08 | 2004-07-21 | 西研稀有金属新材料股份有限公司 | Production method of fully-coated copper core composite rod |
| CN101474717A (en) * | 2009-02-16 | 2009-07-08 | 中国人民解放军理工大学工程兵工程学院 | Explosive welding technique of nuclear power equipment composite pipe fitting |
| CN101837512A (en) * | 2010-05-19 | 2010-09-22 | 南京三邦金属复合材料有限公司 | Explosive welding method for zirconium-steel-zirconium three layer pipe |
| CN102049626A (en) * | 2010-11-26 | 2011-05-11 | 西安天力金属复合材料有限公司 | Preparation method of ultra-thick titanium/steel composite tube plate with large area and high properties |
-
2011
- 2011-05-27 CN CN 201110139152 patent/CN102179617B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03210978A (en) * | 1990-01-16 | 1991-09-13 | Hitachi Ltd | Titanium or titanium alloy/stainless steel pipe joint and its manufacture |
| CN1513637A (en) * | 2003-08-08 | 2004-07-21 | 西研稀有金属新材料股份有限公司 | Production method of fully-coated copper core composite rod |
| CN101474717A (en) * | 2009-02-16 | 2009-07-08 | 中国人民解放军理工大学工程兵工程学院 | Explosive welding technique of nuclear power equipment composite pipe fitting |
| CN101837512A (en) * | 2010-05-19 | 2010-09-22 | 南京三邦金属复合材料有限公司 | Explosive welding method for zirconium-steel-zirconium three layer pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436689A (en) * | 2014-08-21 | 2016-03-30 | 中国科学技术大学 | Explosive press fitting method for surface-roughened pipes |
| CN105290602A (en) * | 2015-11-19 | 2016-02-03 | 中钢集团马鞍山矿山研究院有限公司 | Method for preparing explosive cladding metal bar |
| CN105290602B (en) * | 2015-11-19 | 2017-06-06 | 中钢集团马鞍山矿山研究院有限公司 | A kind of preparation method of Explosion composite metal bar |
| CN111085769A (en) * | 2019-12-18 | 2020-05-01 | 安徽建筑大学 | Manufacturing process of explosive composite pipe with negative pressure cavity based on liquid explosive |
| CN111085769B (en) * | 2019-12-18 | 2021-08-03 | 安徽建筑大学 | Manufacturing process of explosive composite pipe with negative pressure cavity based on liquid explosive |
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| CN102179617B (en) | 2013-04-03 |
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Granted publication date: 20130403 Termination date: 20200527 |