CN221208112U - Accelerated aging test box for printed board - Google Patents
Accelerated aging test box for printed board Download PDFInfo
- Publication number
- CN221208112U CN221208112U CN202323124458.1U CN202323124458U CN221208112U CN 221208112 U CN221208112 U CN 221208112U CN 202323124458 U CN202323124458 U CN 202323124458U CN 221208112 U CN221208112 U CN 221208112U
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- Prior art keywords
- pipe
- test box
- accelerated aging
- water tank
- box body
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- 238000012360 testing method Methods 0.000 title claims abstract description 83
- 230000032683 aging Effects 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 14
- 239000001301 oxygen Substances 0.000 claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 37
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 19
- 239000008236 heating water Substances 0.000 claims description 12
- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to the field of inspection and detection, in particular to the field of inspection and detection of printed boards, and more particularly relates to an accelerated aging test box for printed boards. According to the technical scheme disclosed by the invention, steam, oxygen and nitrogen can be controllably introduced into the test box body as required, the printed board is accelerated to age and rotate in the test box body, meanwhile, the liquid level display in the collection of condensed water is utilized, the generation amount of the steam in the test can be effectively regulated and controlled through the formation speed of the condensed water, and the energy is saved on the premise that the test is smoothly carried out, so that the automatic completion of the accelerated aging test of the printed board is realized.
Description
Technical Field
The invention relates to the field of inspection and detection, in particular to the field of inspection and detection of printed boards, and more particularly relates to a printed board accelerated aging test box in a steam oxygen aging test of the printed board.
Background
Printed boards, also called printed wiring boards, are one of the important components of the electronics industry. Almost every electronic device, as small as electronic watches, calculators, as large as computers, communication electronics, military weapon systems, will use printed boards as long as there are electronic components such as integrated circuits.
In the process of manufacturing the printed board, the quality of welding can directly influence the quality of the whole product. The accelerated aging test of the printed board predicts the influence of the storage of the printed board on the solderability by a short-term accelerated aging process.
The accelerated aging process of the printed board is carried out by placing the printed board in a steam or (and) oxygen environment. In operation, the printed board is clamped by the clamp and placed in the test box body, then the test box body is rotated according to the set speed, steam and nitrogen are introduced into the test box body until the set temperature is reached, then nitrogen-oxygen mixed gas and steam with a specific proportion are introduced, the printed board is continuously rotated until the set time of the aging test is reached, and the accelerated aging of the printed board is completed.
Disclosure of Invention
The invention aims to provide a printed board accelerated aging test box, so that an automatic accelerated aging printed board can be realized, and the automatic accelerated aging printed board is used as a basis for subsequent detection.
In order to achieve the aim of the invention, the invention discloses a printed board accelerated aging test box which comprises a test box body, a clamp assembly, a vapor condensation assembly, a vapor generator, a test gas flow pipeline and a gas mixing and supplying device; the test box body is a closed space with a box door; the fixture assembly comprises a fixture, a connecting rod and an adjustable speed rotating motor fixed on the connecting rod of the fixture, one end of the connecting rod is rotatably connected with the top of the test box body, and the other end of the connecting rod is fixed with the fixture; the water vapor condensation assembly comprises a water vapor condenser, a cooling water circulation pipeline and a condensate water collector, wherein the water vapor condenser is a condensation pipe, an opening at the upper end of the water vapor condenser is connected into the test box body, an opening at the lower end of the water vapor condenser is connected into the condensate water collector, the cooling water circulation pipeline is wrapped outside the condensation pipe, and the bottom of the condensate water collector is communicated with a condensate water drain pipe; the steam generator mainly comprises two communicated water tanks, namely a heating water tank and a buffer water tank, wherein the bottom end of the heating water tank is communicated with the side wall of the buffer water tank through a first communicating pipe, the upper part of the heating water tank is communicated with the side wall of the buffer water tank through a second communicating pipe, the liquid adding amount of water is higher than that of the first communicating pipe and lower than that of the second communicating pipe, a heater is arranged in the heating water tank, and a steam pipe is arranged on the buffer water tank; the test gas flow pipeline comprises an oxygen pipe and a nitrogen pipe, the oxygen pipe and the nitrogen pipe are collected to a gas mixing and supplying device, an air outlet pipe is further arranged on the gas mixing and supplying device, the air outlet pipe is connected with a steam pipe into a test box body air inlet pipe, and the test box body air inlet pipe is led into the test box body; the nitrogen pipe is also provided with a branch gas pipe which is connected into the buffer water tank, and a nitrogen gas flowmeter is arranged on a pipeline which is led into the buffer water tank;
And a liquid level display is also arranged in the condensed water collector.
The printed board is pressed from both sides in the test box by anchor clamps, steam gets into the test box together with nitrogen gas, at this in-process test box intensifies, nitrogen gas prevents simultaneously that the printed board from being oxidized when rising the temperature, after reaching the temperature of settlement, close nitrogen gas flowmeter, nitrogen gas and oxygen mix in gas mixing air feeder, and all let in the test box with steam, the printed board begins to contact with oxygen and steam under the settlement temperature, accomplish ageing test, after the test, stop nitrogen gas and oxygen gas mixture and supply, and open nitrogen gas flowmeter, provide nitrogen gas at the in-process that test box cooled down, prevent that the printed board from continuing ageing, guarantee ageing test result accuracy.
Further preferably, the clamp is composed of two opposite clamping pieces, and further comprises a bolt penetrating through the clamping pieces and a nut fixed on the bolt and positioned outside the clamping pieces. The distance between two oppositely arranged clamping pieces can be adjusted through the matching of the nuts and the bolts, and then the printed board can be clamped.
Further preferably, the water vapor condenser is a serpentine condenser tube formed by continuously bending a condenser tube.
Further preferably, the liquid level display is a floating ball liquid level meter, and the floating ball liquid level meter is fixedly connected with the bottom of the condensed water collector.
Further preferably, a mixed gas flowmeter is arranged on the gas outlet pipe of the gas mixed gas supply device.
Further preferably, a temperature sensor is also arranged in the test box body.
In a preferred embodiment, the heater is a heating rod.
Further preferably, a control panel is also included. The control panel is respectively connected with the speed-adjustable rotating motor, the temperature sensor, the mixed gas flowmeter, the nitrogen gas flowmeter, the heater, the liquid level display, the gas mixed gas supply device and the valve on each vent pipeline, so that the opening and closing of each component can be facilitated, and the test efficiency is improved.
By adopting the technical scheme disclosed by the invention, steam, oxygen and nitrogen can be controllably introduced into the test box body as required, the printed board is accelerated to age and rotate in the test box body, meanwhile, the liquid level display in the collection of condensed water is utilized, the generation amount of steam in the test can be effectively regulated and controlled through the formation speed of the condensed water, and the energy is saved on the premise of ensuring the smooth performance of the test, so that the automatic completion of the accelerated aging test of the printed board is realized.
Drawings
FIG. 1 is a schematic diagram of a test box for accelerated aging of printed boards.
Detailed Description
For a better understanding of the present invention, we will further describe the present invention with reference to specific examples.
Example 1
The structure and workflow of the present invention is further described below in conjunction with fig. 1.
As shown in fig. 1, the accelerated aging test box for the printed board comprises a test box body 1, a clamp assembly, a water vapor condensation assembly, a vapor generator, a test gas flow pipeline and a gas mixing and supplying device; the test box body is a closed space with a box door; the fixture assembly comprises a fixture 2, a connecting rod 3 and an adjustable speed rotating motor 4 fixed on the connecting rod of the fixture, in the embodiment, as shown in fig. 1, the fixture consists of two opposite clamping pieces, namely a first clamping piece 201 and a second clamping piece 202, bolts 203 and 204 penetrating through the clamping pieces and nuts 205 and 206 fixed on the bolts and positioned outside the clamping pieces, and in combination with fig. 1, one end of the connecting rod 3 is rotatably connected with the top of the test box 1, and the other end of the connecting rod is fixed with the fixture 2; the steam condensing assembly comprises a steam condenser 5, a cooling water circulating pipeline 6 and a condensate water collector 7, wherein the steam condenser 5 is a condensing pipe, preferably, in the embodiment, as shown in fig. 1, the steam condenser is formed by continuously bending the condensing pipe into a serpentine condensing pipe, an upper end opening of the condensing pipe is connected into the test box 1, a lower end opening of the condensing pipe is connected into the condensate water collector 7, the cooling water circulating pipeline 6 is wrapped outside the condensing pipe, two ports of the cooling water circulating pipeline 6 are respectively a water inlet 601 and a water outlet 602, and the bottom of the condensate water collector 7 is communicated with a condensate water drain pipe 701; the steam generator mainly comprises two communicated water tanks, namely a heating water tank 801 and a buffer water tank 802, wherein the bottom end of the heating water tank 801 is communicated with the side wall of the buffer water tank 802 through a first communicating pipe 803, the upper part of the heating water tank 801 is communicated with the side wall of the buffer water tank 802 through a second communicating pipe 804, the liquid adding amount of water is higher than that of the first communicating pipe and lower than that of the second communicating pipe, and as shown in fig. 1, a heater is arranged in the heating water tank 801, preferably, the heater is a heating rod 9 in the embodiment, and a steam pipe 10 is arranged on the buffer water tank 802; the test gas flow pipeline comprises an oxygen pipe 11 and a nitrogen pipe 12, wherein the oxygen pipe and the nitrogen pipe are collected to a gas mixing and supplying device 13, an air outlet pipe 14 is further arranged on the gas mixing and supplying device, the air outlet pipe 14 and a steam pipe 10 are connected into a test box air inlet pipe 15, the test box air inlet pipe 15 is communicated into the test box 1, the nitrogen pipe 12 is further connected into a buffer water tank 802 through a branch air pipe and is positioned below the liquid level, and a nitrogen flow meter 20 is arranged on the pipeline which is connected into the buffer water tank through the nitrogen pipe.
In this embodiment, it can be seen that preferably a liquid level display is also provided in the condensate collector. The liquid level display is a floating ball liquid level meter 16 which is fixedly connected with the bottom of the condensed water collector 7.
Further preferably, in this embodiment, a mixed gas flowmeter 18 is further disposed on the outlet pipe of the gas mixing and supplying device.
It is further preferred that in this embodiment a temperature sensor 19 is also provided in the test chamber.
Preferably, a control panel is also included. The control panel is respectively connected with the speed-adjustable rotating motor 4, the temperature sensor 19, the mixed gas flowmeter 18, the nitrogen gas flowmeter 20, the heating rod 9, the floating ball liquid level meter 16, the gas mixed gas supply device and the valve on each vent pipeline, so that the opening and closing of each component can be facilitated, and the test efficiency is improved.
Based on the above structure, how the accelerated aging test box for the printed board disclosed by the invention performs the accelerated aging test for the printed board is further described.
Firstly, a printed board is placed between two clamping pieces of a clamp, and then a nut is screwed so that the distance between the two clamping pieces is continuously shortened until the printed board is stably fixed between the two clamping pieces of the clamp. Then, according to the test requirement, the speed-adjustable rotating motor is started, so that the printed board rotates at a preset speed under the drive of the connecting rod.
Then, open nitrogen gas flowmeter, nitrogen gas gets into steam generator's buffer tank, steam generator's heating rod is opened simultaneously, steam produces, and get into the test box together with nitrogen gas, in this in-process test box intensifies, the printed board is oxidized when nitrogen gas prevents to intensify simultaneously, when reaching the temperature of settlement, close nitrogen gas flowmeter, nitrogen gas and oxygen mix in gas mixing air feeder, and all let in the test box with steam, the printed board begins to contact with oxygen and steam at the settlement temperature, the timing, after reaching the time of settlement, finish ageing test, after the test, close gas mixture flowmeter, stop the work of heating rod, and open nitrogen gas flowmeter, provide nitrogen gas at the in-process that test box cooled down, prevent that the printed board from continuing ageing, guarantee ageing test result accuracy.
During the test, by monitoring the height of the float gauge in the condensate collector, it can be determined whether the steam quantity is sufficient or excessive, so that the steam quantity is regulated by controlling the action of the steam generator.
What has been described above is a specific embodiment of the present invention. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (8)
1. Printed board accelerated aging test box, its characterized in that: the device comprises a test box body, a clamp assembly, a water vapor condensing assembly, a vapor generator, a test gas flow pipeline and a gas mixing and supplying device; the test box body is a closed space with a box door; the fixture assembly comprises a fixture, a connecting rod and an adjustable speed rotating motor fixed on the connecting rod of the fixture, one end of the connecting rod is rotatably connected with the top of the test box body, and the other end of the connecting rod is fixed with the fixture; the water vapor condensation assembly comprises a water vapor condenser, a cooling water circulation pipeline and a condensate water collector, wherein the water vapor condenser is a condensation pipe, an opening at the upper end of the water vapor condenser is connected into the test box body, an opening at the lower end of the water vapor condenser is connected into the condensate water collector, the cooling water circulation pipeline is wrapped outside the condensation pipe, and the bottom of the condensate water collector is communicated with a condensate water drain pipe; the steam generator mainly comprises two communicated water tanks, namely a heating water tank and a buffer water tank, wherein the bottom end of the heating water tank is communicated with the side wall of the buffer water tank through a first communicating pipe, the upper part of the heating water tank is communicated with the side wall of the buffer water tank through a second communicating pipe, the liquid adding amount of water is higher than that of the first communicating pipe and lower than that of the second communicating pipe, a heater is arranged in the heating water tank, and a steam pipe is arranged on the buffer water tank; the test gas flow pipeline comprises an oxygen pipe and a nitrogen pipe, the oxygen pipe and the nitrogen pipe are collected to a gas mixing and supplying device, an air outlet pipe is further arranged on the gas mixing and supplying device, the air outlet pipe is connected with a steam pipe into a test box body air inlet pipe, and the test box body air inlet pipe is led into the test box body; the nitrogen pipe is also provided with a branch gas pipe which is connected into the buffer water tank, and a nitrogen gas flowmeter is arranged on a pipeline which is led into the buffer water tank;
And a liquid level display is also arranged in the condensed water collector.
2. The accelerated aging test chamber of printed boards of claim 1, wherein: the clamp consists of two clamping pieces which are oppositely arranged, and further comprises a bolt penetrating through the clamping pieces and a nut which is fixed on the bolt and is positioned at the outer side of the clamping pieces.
3. The accelerated aging test chamber of printed boards of claim 1, wherein: the water vapor condenser is formed by continuously bending a condensing pipe into a serpentine condensing pipe.
4. The accelerated aging test chamber of printed boards of claim 1, wherein: the liquid level display is a floating ball liquid level meter which is fixedly connected with the bottom of the condensed water collector.
5. The accelerated aging test chamber of printed boards of claim 1, wherein: and a mixed gas flowmeter is arranged on the gas outlet pipe of the gas mixed gas supply device.
6. The accelerated aging test chamber of printed boards of claim 1, wherein: and a temperature sensor is also arranged in the test box body.
7. The accelerated aging test chamber of printed boards of claim 1, wherein: the heater is a heating rod.
8. The accelerated aging test chamber of printed boards of claim 1, wherein: also comprises a control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323124458.1U CN221208112U (en) | 2023-11-20 | 2023-11-20 | Accelerated aging test box for printed board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323124458.1U CN221208112U (en) | 2023-11-20 | 2023-11-20 | Accelerated aging test box for printed board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221208112U true CN221208112U (en) | 2024-06-25 |
Family
ID=91547174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323124458.1U Active CN221208112U (en) | 2023-11-20 | 2023-11-20 | Accelerated aging test box for printed board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221208112U (en) |
-
2023
- 2023-11-20 CN CN202323124458.1U patent/CN221208112U/en active Active
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| GR01 | Patent grant |