CN207358319U - Microwave circuit substrate large-area welding device - Google Patents
Microwave circuit substrate large-area welding device Download PDFInfo
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- CN207358319U CN207358319U CN201721234514.9U CN201721234514U CN207358319U CN 207358319 U CN207358319 U CN 207358319U CN 201721234514 U CN201721234514 U CN 201721234514U CN 207358319 U CN207358319 U CN 207358319U
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- adjustment block
- heating plate
- heating adjustment
- circuit substrate
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Abstract
The utility model discloses a kind of microwave circuit substrate large-area welding device, including the first heating plate, the second heating plate, the first heating adjustment block, the second heating adjustment block and two nitrogen sparge tubes；The first heating adjustment block is placed in first heating plate, the second heating adjustment block is placed in the second heating plate, the nozzle of nitrogen sparge tube is respectively aligned to the position of the first heating adjustment block and the second heating adjustment block.Weldment is first placed on to the first heating adjustment block to be preheated, to activate scaling powder, flows to behind metal surface and removes the oxide layer on surface, heated being placed on the second heating adjustment block, solder is changed into liquid from solid-state, under surface tension effects, wetting, completes welding.The utility model overcomes the too fast volatilization of scaling powder caused by welding process steep temperature excursion, and soldering paste is spilt, the problems of welded quality such as element cracking.
Description
Technical field
Welding technology field is the utility model is related to, more particularly to a kind of microwave circuit substrate large-area welding device.
Background technology
Microwave circuit substrate large-area welding technology is primarily referred to as being grounded welding manner microwave circuit substrate with large area
Installed in the face welding technique of microwave susceptor ground plane, the ground connection welding of microwave circuit substrate large area reduces circuit crosstalk and damage
Consumption, it is suppressed that interference, improves microwave components Performance And Reliability, is one of the key technology of micro-group dress.Microwave current circuit
The large-area welding of substrate typically uses air flue device in hot air reflow welding machine to realize.But be welded by air flue device in hot air reflow welding machine,
In the too fast volatilization of scaling powder caused by welding process steep temperature excursion meeting, cause boiling, soldering paste to spill, form tin sweat(ing), element cracking
Etc. problems of welded quality, and still high performance large-scale Re-current welder needs to take larger place and fund.
Utility model content
The technical problems to be solved in the utility model is how to lift the welding quality of microwave circuit.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：
A kind of microwave circuit substrate large-area welding device, including the adjustment of the first heating plate, the second heating plate, the first heating
Block, the second heating adjustment block and two nitrogen sparge tubes；Place the first heating adjustment block in first heating plate, described
The second heating adjustment block is placed in two heating plates, the nozzle of the nitrogen sparge tube is respectively aligned to the first heating adjustment block
And it is described second heating adjustment block position, the first heating adjustment block and it is described second heating adjustment block by different materials
It is made.
Preferably：Coldplate and cooling adjustment block are further included, the cooling adjustment block is positioned on the coldplate.
Preferably：Cooling fan is further included, the air outlet of the cooling fan is directed at the cooling adjustment block.
Preferably：The first heating adjustment block, the second heating adjustment block and the cooling adjustment block are by metal material
Material is made.
Preferably：Further include two adjustable electric heater units, first heating plate and second heating plate respectively with
One adjustable electric heater unit connection.
Using above-mentioned technical proposal, carried out in advance since weldment to be welded is first placed in the first heating adjustment block
Heat so that scaling powder melts the oxide layer for removing metal surface, then is placed on being heated in the second heating adjustment block, welds
Connect, oxygen isolation is carried out while heating.The utility model by the first heating adjustment block and second heating adjustment block, effectively
Have adjusted the heating slope of weldment, avoid welding temperature lifting it is too fast, scolding tin sputtering, element cracking, improve microwave
The quality of circuit.
Brief description of the drawings
Fig. 1 is the structure diagram of one embodiment of the utility model microwave circuit substrate large-area welding device；
Fig. 2 is the coldplate of the utility model, cooling adjustment block diagram, the structure diagram of cooling fan.
In figure, the first heating plates of 110-, 120- the first heating adjustment blocks, 130- nitrogen sparge tubes, the second heating plates of 210-,
The heating adjustment blocks of 220- second, 310- coldplates, 320- cooling adjustment blocks, 330- cooling fans.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.It should be noted that
It is used to help understand the utility model for the explanation of these embodiments, but does not form the restriction to the utility model.This
Outside, as long as technical characteristic involved in each embodiment of the utility model disclosed below does not form conflict each other
It can be mutually combined.
With reference to Fig. 1, the utility model proposes a kind of microwave circuit substrate large-area welding device, including the first heating plate
110th, the second heating plate 210, the heating adjustment block 220 of the first heating adjustment block 120, second and two nitrogen sparge tubes 130；First adds
The first heating adjustment block 120 is placed on hot plate 110,210 place the second heating adjustment block 220, nitrogen sparge tube in the second heating plate
130 nozzle is respectively aligned to the position of the heating adjustment block 220 of the first heating adjustment block 120 and second, the first heating adjustment
Block 120 and the second heating adjustment block 220 are made from a different material.
Using above-mentioned technical proposal, carried out since weldment to be welded is first placed in the first heating adjustment block 120
Preheating so that scaling powder melts the oxide layer for removing metal surface, then is placed on being added in the second heating adjustment block 220
Heat, welding, oxygen isolation is carried out while heating.The utility model is heated up by the first heating adjustment block 120 and second and adjusted
Block 220, effectively have adjusted the heating slope of weldment, avoid that the temperature lifting of welding is too fast, and scolding tin sputtering, element opens
Split, improve the quality of microwave circuit.
Reference Fig. 2, specifically：Coldplate 310 and cooling adjustment block 320 are further included, cooling adjustment block 320 is positioned over cooling
On plate 310.
Specifically：Further include cooling fan 330, the air outlet alignment cooling adjustment block 320 of cooling fan 330.
Specifically：The heating adjustment block 220 of the first heating adjustment block 120, second and cooling adjustment block 320 are by metal material system
Into.
Specifically：Further include two adjustable electric heater units, the first heating plate 110 and the second heating plate 210 are respectively with one
Adjustable electric heater unit connection.
The technical solution of the utility model uses the hot plate of two different temperatures.The heating-up temperature of first heating plate 110 is
120 DEG C~180 DEG C, can reasonably it be selected by soldering paste fusing point difference.Preheating time was controlled at 60~120 seconds.First heating plate
110 effect is activation scaling powder, removes the oxide layer on surface after flowing to the metal surface of weldment, and prevent oxide again
Secondary formation.
The set temperature of second heating plate 210 is higher by 20 DEG C~25 DEG C than the fusing point of soldering paste.It is such selection be allow it is all
Element have preferable infiltration, it is ensured that all areas element soldering paste exceed solder condensing temperature.Solder is changed into liquid from solid-state
State, under surface tension effects, wetting, intermetallic compound is formed by the processed metal surface of scaling powder.Reflux
Time was at 30~60 seconds.Time is too short to cause rosin joint, and overlong time reduces the reliability of solder joint.
The effect of the wherein heating of the first heating adjustment block 120 and second adjustment block 220 is adjustment heating slope.The first heating
Adjustment block 120 adjusts the heating slope from room temperature state to 110 preheating temperature of the first heating plate.Heating rate is less than 3 DEG C/S.Second
Heating adjustment block 220 adjusts the heating slope that 210 temperature of the second heating plate is raised to from the temperature of the first heating plate 110.Pass through choosing
Different thermal capacity adjustment blocks are selected, hinder slow welded part steep temperature excursion.Heating slope adjustment metal derby and welded part with being placed in hot plate
On.
Liquid solder cooling solidification is changed into solid-state by the effect of coldplate 310, forms reliable welding.Fast cooling can obtain
Glossiness solder joint.The effect of cooling adjustment block 320 and cooling fan 330 is also adjustment descending temperature ramp back down.
Nitrogen sparge tube 130, resistance oxygen nitrogen environment is formed above the hot plate of welding section to be helped to improve welding quality.
Microwave circuit substrate large-area welding method, including step：
S10：The first heating adjustment block 120 of metal is positioned in the first heating plate 110, and weldment is positioned over
In one heating adjustment block 120；
S20：First heating plate 110 is warming up to the first preset temperature to carry out welding preheating, the first preset temperature is to help
The melt temperature of solder flux；
S30：The second of metal heating adjustment block 220 is positioned in the second heating plate 210, and by the second heating plate 210
The second preset temperature is heated to, the firing rate of the first heating plate 110 is different from the firing rate of the second heating plate 210；
S40：Weldment is positioned over the second heating adjustment block 220；
S50：Second heating plate 210 is heated to the second preset temperature, weldment is welded, the second preset temperature is high
Go out 20 DEG C -25 DEG C of the fusing point of scolding tin.
Specifically：Second heating plate 210 is heated to the second preset temperature, weldment is welded, S50：Second is pre-
If temperature further includes after being higher by the step of 20 DEG C -25 DEG C of fusing point of scolding tin：
S60：Cooling adjustment block 320 is positioned over coldplate 310, and weldment is positioned over cooling adjustment block 320.
Specifically：S60：The step of cooling adjustment block is positioned over coldplate, and weldment is positioned over cooling adjustment block
Further include afterwards：
S70：330 weldments are cooled down by cooling fan.
Specifically：The heating-up temperature of first heating plate is 120 DEG C~180 DEG C, 60~120S of preheating time；Second heating plate
220 heating-up temperature is higher by 20 DEG C -25 DEG C of the fusing point of scolding tin, and the reflow soldering time is 30~60S.
Specifically：When weldment is positioned over the heating heating of adjustment block 220 of the first heating adjustment block 120 and second, pass through nitrogen
Gas blowout pipe 130 carries out oxygen isolation to weldment.
This method overcome single hot plate welding process temperature skyrocket caused by scaling powder too fast volatilization, cause boiling, soldering paste to be splashed
Go out, form the problems of welded quality such as tin sweat(ing), element cracking.Included using improved hot plate welding technology pre- before welding fusing
Thermal process, heating slope is adjustable, has obtained similar reflow welding temperature curve, improves the accurate control of temperature and time.Welding
Quality is greatly improved.
The utility model is heated up by the first heating plate 110, the second heating plate 210, the first heating adjustment block 120, second
Adjustment block 220 and two nitrogen sparge tubes 130, form a kind of microwave circuit substrate large-area welding device.Pass through the first heating
Plate 110 and the first heating adjustment block 120, realize the preheating of weldment, and the heating slope of heating is no more than 3 DEG C/S；Pass through second
The heating adjustment block 220 of heating plate 210 and second, to weld heating, controls its slope that heats up to be no more than 4 DEG C/S.Pass through control
The programming rate of weldment, avoids the too fast volatilization of scaling powder caused by steep temperature excursion, boiling, soldering paste spills to form tin sweat(ing), member
The problems of welded quality such as part cracking.
The embodiment of the utility model is explained in detail above in association with attached drawing, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, it is right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall within the scope of protection of the utility model.
Claims (5)
- A kind of 1. microwave circuit substrate large-area welding device, it is characterised in that：Including the first heating plate, the second heating plate, One heating adjustment block, the second heating adjustment block and two nitrogen sparge tubes；The first heating tune is placed in first heating plate Monoblock, places the second heating adjustment block in second heating plate, and the nozzle of the nitrogen sparge tube is respectively aligned to described the The position of one heating adjustment block and the second heating adjustment block, the first heating adjustment block and the second heating adjustment block Be made from a different material.
- 2. microwave circuit substrate large-area welding device according to claim 1, it is characterised in that：Further include coldplate and Cool down adjustment block, and the cooling adjustment block is positioned on the coldplate.
- 3. microwave circuit substrate large-area welding device according to claim 2, it is characterised in that：Further include cooling wind Fan, the air outlet of the cooling fan are directed at the cooling adjustment block.
- 4. microwave circuit substrate large-area welding device according to claim 2, it is characterised in that：The first heating tune Monoblock, the second heating adjustment block and the cooling adjustment block are made of metal material.
- 5. microwave circuit substrate large-area welding device according to claim 1, it is characterised in that：Further include two it is adjustable Electric heater unit, first heating plate and second heating plate are connected with an adjustable electric heater unit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721234514.9U CN207358319U (en) | 2017-09-25 | 2017-09-25 | Microwave circuit substrate large-area welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721234514.9U CN207358319U (en) | 2017-09-25 | 2017-09-25 | Microwave circuit substrate large-area welding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207358319U true CN207358319U (en) | 2018-05-15 |
Family
ID=62349395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721234514.9U Active CN207358319U (en) | 2017-09-25 | 2017-09-25 | Microwave circuit substrate large-area welding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207358319U (en) |
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2017
- 2017-09-25 CN CN201721234514.9U patent/CN207358319U/en active Active
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