CN1236086A - Directly cooled full liquid plate type evaporator for milk tank and its spot welding technology - Google Patents
Directly cooled full liquid plate type evaporator for milk tank and its spot welding technology Download PDFInfo
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- CN1236086A CN1236086A CN 99113560 CN99113560A CN1236086A CN 1236086 A CN1236086 A CN 1236086A CN 99113560 CN99113560 CN 99113560 CN 99113560 A CN99113560 A CN 99113560A CN 1236086 A CN1236086 A CN 1236086A
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Abstract
The present invention adopts new design with two sheets of stainless steel plate with higher specific thickness and increased weld spots, and the double-sided spot welding is carried out at working electrode pressure greatly lower than that of conventional welding. Therefore, there is no spot weld notch on the side of directly contacting with milk of the thick stainless steel plate, and this makes the mirror polishing of inner surface of the milk tank easy and fast. The said technological process results in high quality welding and can save expensive thin stainless steel plate.
Description
The invention relates to the evaporimeter of refrigeration plant, especially directly cooled full liquid plate type evaporator for milk tank and its spot-welding technology.
Milk is the food that a kind of rich joint venture is supported.It is not only one of main food of baby of lactation, also is normal children, adult or the elderly's health food.Particularly the westerner regards milk as daily beverage.China's also constantly rising of milk consumption figure per capita in recent years, the milk cattle cultivating industry of various places is also flourish.But after fresh milk was gathered from parent, if untimely its processing is handled, then breed bacteria and going bad very easily caused great waste.General cattle farm does not possess the condition of purchasing the dairy produce process equipment because raising scale is limited.Therefore the fresh milk of gathering in time being stored in 4 ℃ cold-storage jar, is an excellent measure.Along with the continuous development of Refrigeration Technique and welding procedure, external, particularly the U.S. has produced a kind of direct-cooling type milk container, and it is that the evaporimeter of refrigeration and tank body are united two into one, and promptly evaporimeter sidewall directly contacts with milk still for the part of milk tank.This evaporimeter is that two thickness are respectively the spot welding of the corrosion resistant plate of 2-2.5mm and 1.5-1.2mm with the arrangement of 60 * 60mm dot matrix way, all around again with behind the seam weldering welded seal, with inflating stressed way, makes outwards outstanding the heaving of steel plate of thin thickness.Thereby between the different corrosion resistant plate of two thickness of above-mentioned welding, a series of continuous passages have been formed, swell refrigeration when cold-producing medium (fluorine Lyons) just flows through in these passages to thin-walled one lateral process.This advantage of evaporimeter as a tank body part is directly to contact with milk, refrigerating speed is fast, can in time fresh milk be reduced to temperature requiredly, and energy consumption is low.But the tank body as storage milk requires its inner wall smooth such as mirror, so that jar interior cleaning.And with after the existing spot-welding technology standard welding, the solder joint place does not leave pit unavoidably.Though the equal thickness stainless steel is not symmetrical in interface for making nugget when spot welding, guarantee the quality of welding, use the pit depth of the favourable minimizing inner tank wall of larger-diameter electrode in the thick side of material.But the standard of conventional stainless steel spot welding during to the 2-2.5mm plate thickness is: electrode diameter 7-8mm, and electrode pressure reaches 7.5-10kN, weld interval 0.22-0.32 welding current second 8-11kN; To the 1.2mm thickness of slab be: electrode diameter 6mm, electrode pressure 4-4.5kN, 0.14-0.18 second weld interval, welding current 6-7kA.(HB/Z78-84) visible under so high electrode pressure, the pit of spot welding is inevitable, and the bigger degree of depth is arranged.So in that to polish the difficulty that adds man-hour be self-evident as a sheer plank of milk tank to evaporation.In addition, when inflation was shaped, indivedual solder joints were understood explosions and are done over again.For this reason, be necessary the design and the spot-welding technology of existing directly cooled full liquid plate type evaporator for milk tank are done new discussion.
The object of the present invention is to provide design and its spot-welding technology of a kind of new directly cooled full liquid plate type evaporator for milk tank, make its welding back, be beneficial to the milk container inwall and polish and reach the bright and clean requirement of minute surface at slab one this nothings of side group spot welding pit.
The object of the present invention is achieved like this:
A kind of directly cooled full liquid plate type evaporator for milk tank, it is to be tightly connected by the seam weldering all around by the stainless sheet steel that two thickness do not wait, middle by a series of spot welding connections, and through inflation pressurization the stainless sheet steel of thin thickness is outwards expanded to bloat, form the evaporimeter of a series of passages that are interconnected to a lateral process between above-mentioned two corrosion resistant plates, it is characterized in that: their thickness of stainless sheet steel that described two thickness do not wait is respectively 2-2.5mm and 0.8-1mm; Described spot welding is arranged apart from two dot matrix that are 50mm by line-spacing and row, and the solder joint in the above-mentioned dot matrix is arranged in another dot matrix solder joint intersection of diagonal place.
The direct welding technology of above-mentioned directly cooled full liquid plate type evaporator for milk tank is characterized in that: slab lateral electrode working diameter is 16-18mm, and thin plate side pole working diameter is 7-9mm; Electrode operating pressure 13-2.6kN, welding current 6.6-8.5kA, 1-1.25 second weld interval.
Though the present invention has increased the quantity of spot welding, but, only, therefore there is not the spot welding pit to occur in its slab one side for having now about half of standard owing to greatly reduced the operating pressure of electrode, make polishing process thereafter very convenient, just the milk container inwall can be polished to smooth minute surface easily.Therefore shorten machining period widely, reduced production cost.Be to guarantee the quality of solder joint, when reducing electrode pressure, prolonged weld interval, for the 3-11 of existing standard doubly.And the thinner stainless steel materials of a side employing, the thickness that has enlarged original material compares: this has saved material consumption on the one hand, also helps inflation on the other hand and is shaped, and solder joint does not have the explosion phenomenon, and product does not have does over again and waste product.
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the directly cooled full liquid plate type evaporator for milk tank structural representation.
Fig. 2 is that C shows view to the part among Fig. 1.
Fig. 3 is a D-D partial sectional view among Fig. 2.
Fig. 4 is a process flow diagram.
Embodiment 1, directly cooled full liquid plate type evaporator for milk tank 1 (Fig. 1) by thickness be the corrosion resistant plate 2 of 2.5mm and corrosion resistant plate 3 welding that thickness is 1mm, roll bending is crooked and inflation (being generally industrial nitrogen) cydariform forms.Its technological process as shown in Figure 4.After corrosion resistant plate 2 and 3 is cut material by required size, their side is polished respectively.Clean above-mentioned side with acetone through polishing.Corrosion resistant plate 2 and 3 is harmonious through two sides of above-mentioned polishing, cleaning, sends into mash welder and carry out direct welding.The top electrode working diameter of mash welder is 9mm, bottom electrode working diameter 18mm (corrosion resistant plate 3 is last, and corrosion resistant plate 2 is following) electrode operating pressure 2.3-2.6kN, welding current 8-8.5kA, 1.25 seconds weld intervals.Solder joint is arranged as shown in Figure 2, arranges apart from two dot matrix A (representing with chain-dotted line) that are 50mm and B (representing with double dot dash line) by line-spacing and row.The solder joint 5 of dot matrix B is positioned on the diagonal crosspoint of the quick-fried point 4 of dot matrix A.The row, column quantity of above-mentioned dot matrix A and B is decided by the film-cooled heat of directly cooled full liquid plate type evaporator for milk tank 1.The point postwelding, the stain of polishing point postwelding.Enter veneer reeling machine, arc on request (R1 and R2) bending makes its arc with the milk tank consistent.Again above-mentioned processing component is placed on the mould,, around corrosion resistant plate 3, stitch sealing limit formation one circle weld seam 6 with argon arc welding with around the ketone oil corrosion resistant plate 3 zone that will weld being cleaned.Charge into industrial nitrogen, gradually intensified pressure.Corrosion resistant plate 3 outwards expands gradually under the pressure of gas and heaves except that spot welding place and seam weldering place all around.After cydariform finishes, a series of passages that are interconnected 7 (Fig. 3) between corrosion resistant plate 2 and 3, have been formed.After waiting to hunt leak, just can weld, make it become a milk tank part with other tank body part of milk container.
Claims (2)
1, a kind of directly cooled full liquid plate type evaporator for milk tank, it is to be tightly connected by the seam weldering all around by the stainless sheet steel that two thickness do not wait, middle by a series of spot welding connections, and through inflation pressurization the corrosion resistant plate of thin thickness is outwards expanded to bloat, between above-mentioned two corrosion resistant plates, form the evaporimeter of a series of passages that are interconnected to a lateral process, it is characterized in that: the stainless sheet steel that described two thickness do not wait its thickness be respectively 2-2.5mm and 0.8-1mm; The solder joint of described spot welding is arranged apart from dot matrix A that is 50mm and B by line-spacing and row; The solder joint of above-mentioned dot matrix B is positioned on the diagonal crosspoint of dot matrix A solder joint.
2, the direct welding technology of directly cooled full liquid plate type evaporator for milk tank according to claim 1, it is characterized in that: the electrode working diameter of slab side is 16-18mm, the electrode working diameter of thin plate side is 7-9mm, electrode operating pressure 1.3-2.6kN, welding current 6.6-8.5kA, 1-1.25 second weld interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113560 CN1236086A (en) | 1999-03-26 | 1999-03-26 | Directly cooled full liquid plate type evaporator for milk tank and its spot welding technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113560 CN1236086A (en) | 1999-03-26 | 1999-03-26 | Directly cooled full liquid plate type evaporator for milk tank and its spot welding technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1236086A true CN1236086A (en) | 1999-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99113560 Pending CN1236086A (en) | 1999-03-26 | 1999-03-26 | Directly cooled full liquid plate type evaporator for milk tank and its spot welding technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN1236086A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737073A (en) * | 2009-10-26 | 2010-06-16 | 大连亿斯德制冷设备有限公司 | Mobile cooling and refrigerating unit |
| CN104507616A (en) * | 2012-08-02 | 2015-04-08 | 埃尔塞乐公司 | Method for manufacturing of a metal part |
-
1999
- 1999-03-26 CN CN 99113560 patent/CN1236086A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737073A (en) * | 2009-10-26 | 2010-06-16 | 大连亿斯德制冷设备有限公司 | Mobile cooling and refrigerating unit |
| CN104507616A (en) * | 2012-08-02 | 2015-04-08 | 埃尔塞乐公司 | Method for manufacturing of a metal part |
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Addressee: Jinzhuang Industrial Co., Ltd., Shanghai Document name: Notice of first review |
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