CN102284587A - Heat radiating plate pair expansion forming process - Google Patents
Heat radiating plate pair expansion forming process Download PDFInfo
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- CN102284587A CN102284587A CN2011101012040A CN201110101204A CN102284587A CN 102284587 A CN102284587 A CN 102284587A CN 2011101012040 A CN2011101012040 A CN 2011101012040A CN 201110101204 A CN201110101204 A CN 201110101204A CN 102284587 A CN102284587 A CN 102284587A
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Abstract
The invention discloses a heat radiating plate pair expansion forming process, which contains the following steps that: step A, an expansion tool is obtained; step B, a first plate and a second plate are paired to be welded into a plate pair intermediate product; step C, a first process hole and a second process hole are arranged on the plate pair intermediate product; step D, the plate pair intermediate product which is obtained in the step C is arranged inside an accommodating space of the expansion tool, and a first press plate and a second press plate are utilized to hold down the circumference of the plate pair intermediate product; and step E, water pressure expansion is undertaken on the plate pair intermediate product through the first process hole and the second process hole, and the plate pair intermediate product is expanded by the water pressure to be deformed inside the accommodating space so as to form the plate pair product. Due to the adoption of the heat radiating plate pair expansion forming process, not only can the expense on the design and the manufacturing of a mold can be saved, and can the production period of the product be shortened, but also the diversity characteristics of the structure of the heat radiating plate pair can be satisfied.
Description
Technical field
The present invention relates to the heat transmission equipment technical field, particularly relate to the right production method of a kind of heat radiation plate plate.
Background technology
Heat radiation plate is right as a kind of heat exchanger plates of special structure form, not only can under limited volume, very little pressure drop, obtain very high heat transfer efficiency, and can immerse vessel in heating or cooling mediums such as various grooves, jar, still according to different technology, working condition requirement.The right structural design of heat radiation plate plate is very flexible, therefore is widely used in industries such as plating, medal polish, petrochemical industry, weaving, wine brewing, pharmacy, food, papermaking, freezing, dry, heat treatment.
Traditional heat radiation plate is at first the plate of two sheet of planar to be struck out certain bellows-shaped respectively to processing technology, and then with both carry out spot welding in contact portion, the seam postwelding forms plate to finished product.Because the very variation of structural design that plate is right, therefore difform plate needs to come punch forming with the mould that uses difformity, specification.Therefore the template of a kind of heat radiation plate of every design just needs the punching press mould of design respective shapes, and the design of every mold, manufacturing expense are all very high, and this has increased the manufacturing cost of enterprise greatly.Simultaneously, because the plate of different bellows-shaped need can not satisfy the flexible and changeable characteristics of heat radiation plate with different mould punch formings, therefore directly influenced the productivity effect and the economic benefit of enterprise.
Therefore those skilled in the art are devoted to improve the applicability of heat radiation plate processing technology always, to satisfy the flexible and changeable specification requirement of heat radiation plate plate corrugated form.
Summary of the invention
The technical problem to be solved in the present invention is in order to overcome the relatively poor defective of processing technology applicability of prior art, to provide the good heat radiation plate plate of a kind of applicability right bulging contour machining procedure.
The present invention solves above-mentioned technical problem by following technical proposals:
The bulging contour machining procedure that a kind of heat radiation plate plate is right comprises at least: step 1 obtains the bulging frock; Described bulging frock comprises that at least first pressure strip and second pressure strip reach an accommodation space that is made of described first pressure strip and described second pressure strip; Step 2 forming a plate to middle product, described is welded as first direct welding, back seam weldering with first plate, the second plate welding; Step 3 is offered first, second fabrication hole at described plate on to middle product; Step 4, the described plate that step 3 is obtained is put into the described accommodation space of the frock of bulging described in the step 1 to middle product, utilizes described first pressure strip, described second pressure strip that the periphery of described plate to middle product compressed; Step 5 is done hydraulic pressure bulging operation to described plate to middle product by described first, second fabrication hole, and described plate is subjected to the hydraulic pressure bulging to middle product and is out of shape in described accommodation space, form a plate to finished product.
Preferably, described bulging frock also comprises some compressing members.Further, the thickness of described compressing member and described plate highly are complementary to the moulding of Chen Pin.
Preferably, the position of solder joint described in the step 2 is provided with and depends on the external form of plate described in the step 5 to finished product.
Preferably, the described plate that obtains when step 2 during greater than 1mm, increases by a smoothing work step to the unevenness of middle product.
Preferably, after the described step 5, the described plate that obtains is done the water pressure test to finished product, test pressure is 1.3 times of design pressure, pressurize 1 hour, and not having any leakage is certified products.
Preferably, the electric current of described welding is between 7000A-9800A, and conduction time, pressure was between 6-8MPa between 300-800ms.
Preferably, after the described step 5, can also do surface sand-blasting, application processing to finished product to described plate.
Preferably, before the described step 2, adopt earlier the lath of a plurality of and described first plate, the identical material of second plate to do soldering test, solder joint is that metal true qualities or golden yellow and solder joint depth of cup are qualified less than 15% of described lath thickness.Further, also comprise a tear test after the described welding experiment, each tears effective fusion diameter of solder joint greater than 5 (t)
1/2And solder joint tear the position in the mother metal position rather than be qualified during solder joint itself.
Positive progressive effect of the present invention is:
The position of processing method of the present invention by spot welding is provided with satisfies the right shape need of bulging distortion back plate, and do not need earlier the plate on plane to be cooked the punching press deformation process, thereby needs have been save in the prior art to diel, improved the applicability of processing technology greatly, reduce processing cost, improved working (machining) efficiency.
The present invention provides a kind of new processing method for the heat radiation plate plate to moulding, not only saved the expense of enterprise design, mfg. moulding die, shortened life cycle of the product, also satisfied the flexible and changeable characteristic of heat radiation plate simultaneously, for enterprise has created bigger interests space.
Description of drawings
Fig. 1 is the structural representation of bulging frock in one embodiment of the invention;
Fig. 2 be in one embodiment of the invention plate to the structural representation of middle product;
Fig. 3 is for putting into plate shown in Figure 2 the structural representation of bulging frock shown in Figure 1 to middle product;
The plate that Fig. 4 obtains for one embodiment of the invention is to the planar structure schematic diagram of finished product;
Fig. 5 looks the partial structurtes schematic diagram for plate shown in Figure 4 to the left side of finished product.
The specific embodiment
Provide the specific embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention and beneficial effect in detail.
Bulging contour machining procedure one specific embodiment that heat radiation plate plate of the present invention is right may further comprise the steps at least:
As shown in Figure 1, the bulging frock among the present invention comprises one first pressure strip 1, one second pressure strip 2, and some compressing members 3.Compressing member 3 is arranged between first pressure strip 1 and second pressure strip 2, the position is in the edge, and, help first pressure strip 1 and second pressure strip 2 to constitute one and be used for the accommodation space (not shown in figure 1) of placing plate middle product by being arranged on a plurality of bolt nut combinations 4 of periphery.
The thickness of compressing member 3 and plate highly are complementary to the moulding of finished product.Herein, so-called " being complementary " numerical value of meaning both does not equate not strictly.But from absolute value, plate is high highly more to the moulding of finished product, and the thickness of selected compressing member 3 is also thick more.Plate has highly determined the height of accommodation space, the height of accommodation space to determine the choosing of thickness value of compressing member 3 again to the moulding of finished product.The width of compressing member 3 with can pressure strip to middle product, and can avoid plate again shaping position is got final product.The quantity of compressing member 3 does not have absolute requirement, can get surely according to the parameter reality such as specification of section bar.
In concrete enforcement, the design pressure of bulging frock generally exceeds several MPa than plate to product required pressure when the moulding, and selected fishbolt specification required when plate is exerted pressure to middle product, quantity etc.In addition, the design of bulging frock also should have the certain rigid requirement except that satisfying requirement of strength, and plate is answered≤1mm bulging frock maximum immunity value in the forming process.Otherwise bulging frock deflection value is crossed conference and is had influence on plate to Forming Quality.
In concrete enforcement, above-mentioned first plate 5, second plate (being arranged in the below of Fig. 2 first plate 5, not shown) are the metallic plate on a plane, and both diagonal deviations preferably are controlled in the 2mm.Material all can be corrosion resistant plate, or carbon steel plate 304 steel plates etc. for example.In general, both materials are identical.
In order to guarantee the flatness of whole plate face, first direct welding is adopted in above-mentioned welding, the processing arrangement of back seam weldering, to avoid because the negative effect that the welding stress that the seam weldering is brought can't discharge.
A plurality of solder joints 51 are distributed on the outer surface of first plate 5, second plate, and its position is provided with depends on that plate is to the external form of finished product in the following steps five.Its principle is, solder joint is not set will producing bulging distortion place.Paper rear side first plate and second plate at solder joint 51 among Fig. 2 are welded as a whole.
Particularly, the electric current of welding is between 7000A-9800A, and conduction time, pressure was between 6-8MPa between 300-800ms.
The plate that obtains when welding back during greater than 1mm, can also increase by a smoothing work step to the unevenness of middle product, and plate is done plane arrangement to middle product.
Above-mentioned two steps can be separate, in no particular order in concrete enforcement, or carry out simultaneously.
Step 3 is offered first, second fabrication hole (not doing diagram) at above-mentioned plate on to middle product.
First, second fabrication hole can be opened in wherein on the plate, also can respectively offer a hole on two plates.The position of fabrication hole generally is the adapter position that the user provides, and welding procedure is taken on fabrication hole.
Particularly, on first pressure strip 1, place compressing member 3 earlier, then plate is placed on (only visible plate is to first plate 5 in the middle product among Fig. 3) on first pressure strip 1 to middle product, again second pressure strip 2 covered that (first pressure strip 1 as seen among Fig. 3 on to middle product at plate thereafter, second pressure strip 2 is invisible), and screw a plurality of bolt nut combination 4 (not shown among Fig. 3).So utilize first pressure strip 1, second pressure strip 2 with plate to the periphery of middle product compress, compacting and being limited in the accommodation space, to avoid plate to random displacement when the bulging, distortion.
When carrying out the bulging forming operation, generally about 4-10MPa, pressurize made first plate, second plate that sufficient plasticity take place and changes about 30 minutes the pressure of hydraulic pressure bulging, reached the bellows-shaped of technological requirement.
No any leakage between hold period, release and to take out plate right after finishing is measured height overall bellows-shaped, plate with deep throat micrometer check-out console, and deviation 1mm is required plate to finished product with interior.
After the step 5, for guaranteeing quality, can also do the water pressure test to finished product to the plate that obtains, test pressure is 1.3 times of design pressure, pressurize 1 hour, and not having any leakage is certified products.
After the step 5, can also do surface sand-blasting, application processing to finished product to plate, to improve the right heat exchange efficiency of plate.
Whole plate be to will keeping clean all the time in manufacture process and the plate face does not scratch, otherwise can have influence on welding quality, the service life of product.
In processing technology of the present invention, spot welding and seam weldering are the keys of quality.If welding quality is defective, plate will ftracture to solder joint in the bulging process, causes plate to leaking, and plate does not reach the needed real pressure of plate moulding to internal pressure, just can't guarantee the physical dimension and the technological requirement of product.For further improving and guarantee the quality of technology of the present invention, after the material of selected first plate, second plate, before step 2, can also do a welding experiment earlier.
Be specially, choose the lath with first plate, the identical material of second plate, 20 of the laths of for example long 800mm * wide 50mm * thick 1mm-2mm.
Above-mentioned group of slats is right, be respectively (20,70) rounded projections arranged by spacing in length and breadth, with the welding conditions of electric current 7000A-9800A, conduction time 300-800ms, motor pressure 6-8MPa, on multiple-spot welding machine, carry out direct welding.
After spot welding is finished, check the surface quality of solder joint.Solder joint be metal true qualities or golden yellow and solder joint depth of cup less than lath thickness 15% for qualified.
The group of slats that can also be long 200mm * wide 50mm * thick 1mm-2mm with the specification of same material is right, and 90-100ms, pressure 4-6MPa stitch weldering by electric current 12000-13000A, conduction time.After seam weldering is finished, test by the end face cutting, welding penetration be not less than thickness of slab and welding fusion width between 6-10mm, be qualified.
Further, also comprise a tear test after the above-mentioned welding experiment.Each tears effective fusion diameter of solder joint greater than 5 (t)
1/2And solder joint tear the position in the mother metal position rather than be qualified during solder joint itself.
By increasing above-mentioned welding experiment, can guarantee the quality of technology of the present invention more.
Adopt technology of the present invention not need to design special diel, only need design the hydraulic pressure bulging frock that simply satisfies technological requirement.And the expense of making this kind hydraulic pressure bulging frock is more much lower than making mould, and can promote the product diversification development, is particularly suitable for many specifications, small lot batch manufacture.
According to different needs, technology of the present invention is as long as by adjusting the specification and the bond pad locations of bulging frock, just can produce the plate of various different corrugated form.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate.Protection scope of the present invention is limited by appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite that does not deviate from principle of the present invention and essence, but these changes and modification all fall within the scope of protection of the present invention.
Claims (10)
1. bulging contour machining procedure that the heat radiation plate plate is right is characterized in that comprising at least:
Step 1 obtains the bulging frock; Described bulging frock comprises that at least first pressure strip and second pressure strip reach an accommodation space that is made of described first pressure strip and described second pressure strip;
Step 2 forming a plate to middle product, described is welded as first direct welding, back seam weldering with first plate, the second plate welding;
Step 3 is offered first, second fabrication hole at described plate on to middle product;
Step 4, the described plate that step 3 is obtained is put into the described accommodation space of the frock of bulging described in the step 1 to middle product, utilizes described first pressure strip, described second pressure strip that the periphery of described plate to middle product compressed;
Step 5 is done hydraulic pressure bulging operation to described plate to middle product by described first, second fabrication hole, and described plate is subjected to the hydraulic pressure bulging to middle product and is out of shape in described accommodation space, form a plate to finished product.
2. processing technology as claimed in claim 1 is characterized in that: described bulging frock also comprises some compressing members.
3. processing technology as claimed in claim 2 is characterized in that: the thickness of described compressing member and described plate highly are complementary to the moulding of Chen Pin.
4. processing technology as claimed in claim 1 is characterized in that: the position of solder joint described in the step 2 is provided with depends on the external form of plate described in the step 5 to finished product.
5. processing technology as claimed in claim 1 is characterized in that: the described plate that obtains when step 2 during greater than 1mm, increases by a smoothing work step to the unevenness of middle product.
6. processing technology as claimed in claim 1 is characterized in that: after the described step 5, the described plate that obtains is done the water pressure test to finished product, test pressure is 1.3 times of design pressure, pressurize 1 hour, and not having any leakage is certified products.
7. processing technology as claimed in claim 1 is characterized in that: the electric current of described welding is between 7000A-9800A, and conduction time, pressure was between 6-8MPa between 300-800ms.
8. processing technology as claimed in claim 1 is characterized in that: after the described step 5, can also do surface sand-blasting, application processing to finished product to described plate.
9. processing technology as claimed in claim 1, it is characterized in that: before the described step 2, adopt earlier the lath of a plurality of and described first plate, the identical material of second plate to do soldering test, solder joint is that metal true qualities or golden yellow and solder joint depth of cup are qualified less than 15% of described lath thickness.
10. processing technology as claimed in claim 9 is characterized in that: also comprise a tear test after the described welding experiment, each tears effective fusion diameter of solder joint greater than 5 (t)
1/2And solder joint tear the position in the mother metal position rather than be qualified during solder joint itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101012040A CN102284587A (en) | 2011-04-21 | 2011-04-21 | Heat radiating plate pair expansion forming process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101012040A CN102284587A (en) | 2011-04-21 | 2011-04-21 | Heat radiating plate pair expansion forming process |
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| CN102284587A true CN102284587A (en) | 2011-12-21 |
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| CN2011101012040A Pending CN102284587A (en) | 2011-04-21 | 2011-04-21 | Heat radiating plate pair expansion forming process |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6297723A (en) * | 1985-10-23 | 1987-05-07 | Moriya Minamiura | Can making method for sealed can |
| EP1306145A1 (en) * | 2001-10-27 | 2003-05-02 | Bayerische Motoren Werke Aktiengesellschaft | Method for thermal hydroforming |
| JP2004351488A (en) * | 2003-05-29 | 2004-12-16 | Calsonic Kansei Corp | Method for producing tubular member having partition plate by hydraulic forming |
| CN201644606U (en) * | 2010-02-09 | 2010-11-24 | 重庆远雄制冷成套设备有限公司 | Molding equipment of heat exchanger plate |
-
2011
- 2011-04-21 CN CN2011101012040A patent/CN102284587A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6297723A (en) * | 1985-10-23 | 1987-05-07 | Moriya Minamiura | Can making method for sealed can |
| EP1306145A1 (en) * | 2001-10-27 | 2003-05-02 | Bayerische Motoren Werke Aktiengesellschaft | Method for thermal hydroforming |
| JP2004351488A (en) * | 2003-05-29 | 2004-12-16 | Calsonic Kansei Corp | Method for producing tubular member having partition plate by hydraulic forming |
| CN201644606U (en) * | 2010-02-09 | 2010-11-24 | 重庆远雄制冷成套设备有限公司 | Molding equipment of heat exchanger plate |
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Application publication date: 20111221 |