CN101780574A - Welding method of ribs of plate layer of freeze dryer - Google Patents
Welding method of ribs of plate layer of freeze dryer Download PDFInfo
- Publication number
- CN101780574A CN101780574A CN 201010125353 CN201010125353A CN101780574A CN 101780574 A CN101780574 A CN 101780574A CN 201010125353 CN201010125353 CN 201010125353 CN 201010125353 A CN201010125353 A CN 201010125353A CN 101780574 A CN101780574 A CN 101780574A
- Authority
- CN
- China
- Prior art keywords
- temperature
- welding method
- ribs
- flaggy
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a welding method of ribs of a plate layer of a freeze dryer, which is characterized in that the welding method comprises the following specific steps: placing brazing materials between the ribs and an upper panel and a lower panel, placing the components in the middle of the clamp, then placing into a vacuum furnace, keeping the vacuum degree in the furnace at 2*10<-3>Pa-2*10<-2>Pa, increasing the temperature in the furnace to 900-1200 DEG C at the temperature increase rate of 0.5 DEG C/min-1 DEG C/min, keeping the temperature for 10-180min, naturally drop the temperature in the furnace to 400-500 DEG C, introducing inert gas, carrying out quenching, and cooling down to room temperature. The welding method has the advantages of small welding deformation, small impacts on physical and chemical performances of matrix metal, simple process, material conversion and high overall performance of a product.
Description
Technical field
The present invention relates to a kind of welding method of ribs of plate layer of freeze dryer,, belong to the vacuum freeze drier technical field especially for the flaggy of vacuum freeze drier.
Background technology
The freeze dryer flaggy is positioned at freeze drying box, and its function is to place freeze-drying prods (for example biologics or the bottle of biologics is housed) to carry out freeze-drying.Flaggy is positioned in the vertical liftable mechanism and is used for bottle is carried out tamponade.
Another function of flaggy is to carry out the heat exchange of refrigerant (ethylene glycol, alcohol, silicone oil etc.) and freeze-drying prods.In the pre-freeze process, the moisture content in the freeze-drying prods is at first frozen.After pre-freeze was finished, freeze drying box was evacuated the moisture content that makes in the freeze-drying prods and is elevated.In order to finish this process, an external refrigeration system is used to provide cold to refrigerant and freeze-drying prods.The heat that provides sublimation process required is provided for electric heater.
Because freeze-drying process occurs in the vacuum environment, the heat transmission that therefore occurs between freeze-drying prods and the refrigerant is the heat conduction.The flaggy surface should smoothly as much as possible make heat conduction reduction as far as possible between flaggy and the freeze-drying prods.Excellent contact can improve the thermal conduction effect of freeze-drying prods and flaggy and refrigerant.
Tradition freeze dryer flaggy is made up of two panels, ribs up and down and the protection structure all around that is used to seal.Solid rib is arranged in and is used to form the passage that refrigerant flows between two panels.The type that combines with flaggy of rib has two kinds in general: one type is the hook weldering, is exactly that rib is designed to the snap close form and is welded on respectively on two panels.Another kind of type is plug welding, is exactly that rib at first is welded on the panel, and in the boring plug welding of the position of the corresponding rib of another panel, the crator that exceeds is by grinding and buffing then.
The shortcoming of above-mentioned two kinds of layer structures is can cause having thermal stress near pad, and welding deformation amount is bigger.In order to reduce this thermal stress, need to use thicker panel and solid rib.This makes flaggy have very big thermal mass, thereby wastes lot of energy in pre-freeze or lyophilization process.Simultaneously in order to reduce the influence that welding deformation amount causes the flaggy flatness greatly, so finish in the flaggy welding, must carry out preliminary shaping, the flaggy whole processing of Mechanical Processing Center on the whole then, two panels up and down to flaggy carry out machined, the cutting output of each face about about 1mm, has so not only been wasted material greatly, has more increased the cycle that flaggy is made.No matter be hook weldering or plug welding, all be to belong to manual welding, welding quality depends on directly whether the height of welder's level and working attitude be conscientious, and the flaggy quality of stability is poor.
Summary of the invention
The objective of the invention is to invent the welding method that a kind of welding deformation amount is little, save the high ribs of plate layer of freeze dryer of material and product stability, this welding method can be applicable to the flaggy of virtually any size size.Soldering is a kind of metal fever method of attachment.Vacuum brazing is meant and under vacuum protection atmosphere temperature risen to the solder fusion temperature, utilize liquid phase solidify and and mother metal between diffusion realize intermetallic connection.
In order to achieve the above object, technical scheme of the present invention provides a kind of welding method of ribs of plate layer of freeze dryer, it is characterized in that, concrete steps are: solder is placed between rib and the upper and lower surfaces plate, said modules is placed in the middle of the anchor clamps, put into a vacuum drying oven then, vacuum is 2x10 in the stove
-3Pa-2x10
-2Pa is elevated to 900-1200 ℃ with the programming rate of 0.5 ℃/min-1 ℃/min with temperature in the stove, and insulation 10-180min drops to 400-500 ℃ naturally with temperature in the stove, feeds that inert gas quenches and cool to room temperature.
Advantage of the present invention is that welding deformation is little, and little to the physical and chemical performance influence of parent metal, technology is simple, saves material, product overall performance height.
Description of drawings
Fig. 1 is a freeze dryer layer structure schematic diagram;
Fig. 2 is an A-A profile among a kind of Fig. 1;
Fig. 3 is an A-A profile among another kind of Fig. 1.
The specific embodiment
Specify the present invention below in conjunction with drawings and Examples.
Embodiment 1
A kind of welding method of ribs of plate layer of freeze dryer, concrete steps are: solder 4 is placed between rib 3 and the upper and lower surfaces plate 5, said modules is placed in the middle of the anchor clamps, put into a vacuum drying oven then, vacuum is 2x10 in the stove
-2Pa is elevated to 1100 ℃ with the programming rate of 0.5 ℃/min with temperature in the stove, and insulation 120min drops to 400 ℃ with natural cooling rate with temperature in the stove, feeds inert gas and quenches and be cooled fast to room temperature.Described solder 4 can be the Ni-based weld tabs of BNI2 type that Shanghai big magnificent novel brazing material factory produces.
After rib 3 welding well, again left and right sides square steel 1 and front and back square steel 2 are welded sealing.As shown in Figure 1, be freeze dryer layer structure schematic diagram.Because vacuum brazing is adopted in welding, therefore in order to reduce thermal inertia, rib 3 can be made into hollow form, as shown in Figure 2, is A-A profile among a kind of Fig. 1, and described rib 3 adopts the form of I-steel.This form not only greatly reduces the consumption of material, reduces cost; Improved the heat transfer efficiency of the inner refrigerant of flaggy especially, improved the uniformity of flaggy temperature, tangible help arranged for the raising of freeze dryer overall performance.
Embodiment 2
A kind of welding method of ribs of plate layer of freeze dryer, concrete steps are: solder 4 is placed between rib 3 and the upper and lower surfaces plate 5, said modules is placed in the middle of the anchor clamps, put into a vacuum drying oven then, vacuum is 2x10 in the stove
-3Pa is elevated to 900 ℃ with the programming rate of 0.5 ℃/min with temperature in the stove, and insulation 10min drops to 400 ℃ naturally with temperature in the stove, feeds that inert gas quenches and cool to room temperature.Described solder 4 can be the Ni-based weld tabs of BNI2 type that Shanghai big magnificent novel brazing material factory produces.
After rib 3 welding well, again left and right sides square steel 1 and front and back square steel 2 are welded sealing.As shown in Figure 1, be freeze dryer layer structure schematic diagram.Because vacuum brazing is adopted in welding, therefore in order to reduce thermal inertia, rib 3 can be made into hollow form, as shown in Figure 2, is A-A profile among a kind of Fig. 1, and described rib 3 adopts the form of I-steel.This form not only greatly reduces the consumption of material, reduces cost; Improved the heat transfer efficiency of the inner refrigerant of flaggy especially, improved the uniformity of flaggy temperature, tangible help arranged for the raising of freeze dryer overall performance.
A kind of welding method of ribs of plate layer of freeze dryer, concrete steps are: solder 4 is placed between rib 3 and the upper and lower surfaces plate 5, said modules is placed in the middle of the anchor clamps, put into a vacuum drying oven then, vacuum is 2x10 in the stove
-2Pa is elevated to 1200 ℃ with the programming rate of 1 ℃/min with temperature in the stove, and insulation 180min drops to 500 ℃ naturally with temperature in the stove, feeds that inert gas quenches and cool to room temperature.Described solder 4 can be the Ni-based weld tabs of BNI2 type that Shanghai big magnificent novel brazing material factory produces.
After rib 3 welding well, again left and right sides square steel 1 and front and back square steel 2 are welded sealing.As shown in Figure 1, be freeze dryer layer structure schematic diagram.Because vacuum brazing is adopted in welding, therefore in order to reduce thermal inertia, rib 3 can be made into hollow form, as shown in Figure 3, is A-A profile among another kind of Fig. 1, and described rib 3 adopts the form of hollow square steel.This form not only greatly reduces the consumption of material, reduces cost; Improved the heat transfer efficiency of the inner refrigerant of flaggy especially, improved the uniformity of flaggy temperature, tangible help arranged for the raising of freeze dryer overall performance.
Compare with original traditional flaggy welding method, vacuum brazing has the advantage of highly significant, and the concrete table of comparisons is as follows:
| Parameter and explanation | Vacuum brazing | Manual welding (hook weldering, plug welding) |
| Distortion | In brazing process, parent metal does not melt, so can guarantee the original shape of part after the soldering | Welding produces a large amount of heats, and bulk deformation is big |
| The physical and chemical performance of parent metal | The matrix heating-up temperature is lower, and the physical and chemical performance of parent metal does not make a difference or influences very little | The heating-up temperature of matrix is higher, so the physical and chemical performance of parent metal makes a difference |
| Heat treatment | Vacuum brazing and anneal of material, quenching technical can carry out simultaneously | Heat treatment must be carried out separately |
| Cost | Because full weld, intensity are adopted in vacuum brazing | Tradition flaggy design upper and lower panel thickness is logical |
| Height, the flaggy upper and lower panel can adopt 3mm | Often select 4-8mm for use according to the size of flaggy area, materials increase greatly | |
| Refrigerant (silicone oil) consumption | Because the hypotelorism between the upper and lower panel, refrigerant (silicone oil) saves about 20% | The upper and lower panel spacing is big, and refrigerant (silicone oil) expense is big |
| The flaggy temperature homogeneity | ??±0.5℃ | ??±1℃ |
| Heat conduction efficiency | Office | Low |
| Parameter and explanation | Vacuum brazing | Manual welding (hook weldering, plug welding) |
| The flaggy flatness | ??±0.3mm/m | ??±0.5mm/m |
Claims (1)
1. the welding method of a ribs of plate layer of freeze dryer is characterized in that, concrete steps are:
Solder (4) is placed between rib (3) and the upper and lower surfaces plate (5), said modules is placed in the middle of the anchor clamps, put into a vacuum drying oven then, vacuum is 2x10 in the stove
-3Pa-2x10
-2Pa is elevated to 900-1200 ℃ with the programming rate of 0.5 ℃/min-1 ℃/min with temperature in the stove, and insulation 10-180min drops to 400-500 ℃ naturally with temperature in the stove, feeds that inert gas quenches and cool to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010125353 CN101780574A (en) | 2010-03-16 | 2010-03-16 | Welding method of ribs of plate layer of freeze dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010125353 CN101780574A (en) | 2010-03-16 | 2010-03-16 | Welding method of ribs of plate layer of freeze dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101780574A true CN101780574A (en) | 2010-07-21 |
Family
ID=42520781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010125353 Pending CN101780574A (en) | 2010-03-16 | 2010-03-16 | Welding method of ribs of plate layer of freeze dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101780574A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029477A (en) * | 2010-12-01 | 2011-04-27 | 上海共和真空技术有限公司 | Welding structure and welding method for ply of freeze dryer |
| CN103386526A (en) * | 2013-08-02 | 2013-11-13 | 无锡市普尔换热器制造有限公司 | Thin-panel thick-panel soldering assembly structure |
| CN103862124A (en) * | 2014-04-01 | 2014-06-18 | 哈尔滨工业大学 | Vacuum brazing method for prearranging brazing filler material on single side of H-shaped structure and forming brazing seams on double faces of H-shaped structure |
| CN103949764A (en) * | 2014-04-23 | 2014-07-30 | 唐山开元焊接自动化技术研究所有限公司 | Welding method of partitioning strips of plate layer of freeze-drying machine |
| CN104162737A (en) * | 2014-07-23 | 2014-11-26 | 王松松 | Vacuum diffusion welding process for vacuum freeze drier plate layers |
| CN104708176A (en) * | 2013-12-16 | 2015-06-17 | 楚天科技股份有限公司 | Welding method for freeze drier board layer and freeze drier board layer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5519946A (en) * | 1992-03-12 | 1996-05-28 | The Boc Group, Inc. | Freeze dryer shelf |
| CN1833805A (en) * | 2005-03-18 | 2006-09-20 | 中国国际海运集装箱(集团)股份有限公司 | Welding method of container inner side plate and appts thereof |
| CN1997484A (en) * | 2004-02-27 | 2007-07-11 | 派克汉尼芬有限公司 | Cooling apparatus comprising metal tubes connected through soldered lap joints |
| CN201145471Y (en) * | 2007-12-18 | 2008-11-05 | 重庆药友制药有限责任公司 | Frame of pumping underlying type freeze-dry tray |
-
2010
- 2010-03-16 CN CN 201010125353 patent/CN101780574A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5519946A (en) * | 1992-03-12 | 1996-05-28 | The Boc Group, Inc. | Freeze dryer shelf |
| CN1997484A (en) * | 2004-02-27 | 2007-07-11 | 派克汉尼芬有限公司 | Cooling apparatus comprising metal tubes connected through soldered lap joints |
| CN1833805A (en) * | 2005-03-18 | 2006-09-20 | 中国国际海运集装箱(集团)股份有限公司 | Welding method of container inner side plate and appts thereof |
| CN201145471Y (en) * | 2007-12-18 | 2008-11-05 | 重庆药友制药有限责任公司 | Frame of pumping underlying type freeze-dry tray |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029477A (en) * | 2010-12-01 | 2011-04-27 | 上海共和真空技术有限公司 | Welding structure and welding method for ply of freeze dryer |
| CN103386526A (en) * | 2013-08-02 | 2013-11-13 | 无锡市普尔换热器制造有限公司 | Thin-panel thick-panel soldering assembly structure |
| CN104708176A (en) * | 2013-12-16 | 2015-06-17 | 楚天科技股份有限公司 | Welding method for freeze drier board layer and freeze drier board layer |
| CN104708176B (en) * | 2013-12-16 | 2017-01-18 | 楚天科技股份有限公司 | Welding method for freeze drier board layer and freeze drier board layer |
| CN103862124A (en) * | 2014-04-01 | 2014-06-18 | 哈尔滨工业大学 | Vacuum brazing method for prearranging brazing filler material on single side of H-shaped structure and forming brazing seams on double faces of H-shaped structure |
| CN103862124B (en) * | 2014-04-01 | 2016-02-17 | 哈尔滨工业大学 | The vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure |
| CN103949764A (en) * | 2014-04-23 | 2014-07-30 | 唐山开元焊接自动化技术研究所有限公司 | Welding method of partitioning strips of plate layer of freeze-drying machine |
| CN103949764B (en) * | 2014-04-23 | 2015-12-30 | 唐山开元焊接自动化技术研究所有限公司 | A kind of welding method of freeze dryer flaggy parting bead |
| CN104162737A (en) * | 2014-07-23 | 2014-11-26 | 王松松 | Vacuum diffusion welding process for vacuum freeze drier plate layers |
| CN104162737B (en) * | 2014-07-23 | 2016-04-27 | 王松松 | The vacuum diffusion welding process of vacuum freeze dryer plate layer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101780574A (en) | Welding method of ribs of plate layer of freeze dryer | |
| CN201303003Y (en) | Solar battery wafer body welding work platform | |
| CN101839621A (en) | Brazing sheet layer structure of freeze dryer | |
| CN103074471B (en) | Roller-type spheroidizing annealing production line and isothermal spheroidizing annealing method | |
| CN101782310A (en) | Brazing plate layer of freeze dryer | |
| CN101838785A (en) | Post weld vacuum heat treatment process of TC18 titanium alloy welding component | |
| CN104795469A (en) | Roller-way-type solar cell irradiation annealing furnace | |
| CN202131390U (en) | Recirculated cooling water energy saving device for polycrystal ingot casting production | |
| CN201628466U (en) | Brazing sheet layer structure of freeze dryer | |
| CN202712233U (en) | Concentrating photovoltaic heat exchange cooling device | |
| CN108300981B (en) | Preheating box for graphite boat | |
| CN201621938U (en) | Brazing sheet layer of freeze dryer | |
| CN202543391U (en) | Polysilicon ingot furnace | |
| CN205726868U (en) | A kind of Split type welded alloy air-cooled radiator | |
| CN204538071U (en) | Roller bed type solar cell radiation annealing stove | |
| CN102691110A (en) | Annealing process for ingot furnace | |
| CN203112868U (en) | After-heat-usable roller-type quick cooling furnace | |
| CN203866402U (en) | Energy-saving polycrystalline silicon ingotting thermal field structure | |
| CN201922001U (en) | Energy saving device for producing cast ingots of titanium and titanium alloy | |
| CN101280996A (en) | Reinforced heat exchanging plate layer for freeze-dry machine | |
| CN204958998U (en) | Roller gear thermal treatment special fixture | |
| CN203112875U (en) | Roller type spheroidizing annealing production line | |
| CN101280997A (en) | Slotted-plate layer for freeze-dry machine | |
| CN2428745Y (en) | Vacuum sintering gas quenching furnace | |
| CN216977507U (en) | Ceramic plate pretreatment device for multi-lifting and multi-falling refrigeration part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100721 |