CN104525283B - A kind of chamber and test method thereof with superhigh temperature microenvironment Reliability Enhancement Testing function - Google Patents
A kind of chamber and test method thereof with superhigh temperature microenvironment Reliability Enhancement Testing function Download PDFInfo
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- CN104525283B CN104525283B CN201410849753.XA CN201410849753A CN104525283B CN 104525283 B CN104525283 B CN 104525283B CN 201410849753 A CN201410849753 A CN 201410849753A CN 104525283 B CN104525283 B CN 104525283B
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Abstract
Present invention is disclosed a kind of chamber with superhigh temperature microenvironment Reliability Enhancement Testing function, for do Reliability Enhancement Testing test casing in be provided with microenvironment chamber, be provided with heat-generating pipe and thermostat probe in described microenvironment chamber.The present invention has expanded the function of existing HALT/HASS case, can adapt to the Reliability Enhancement Testing of superhigh temperature microenvironment, and structure is simple, and result of use is good, easy to use, adds the function of existing test equipment.
Description
Technical field
The present invention relates to Reliability Enhancement Testing field, particularly relate to method and device that a kind of HALT/HASS of utilization chamber completes High-Temperature Strengthening experiment.
Background technology
Reliability Enhancement Testing is the high efficient and reliable growth test technology that development in recent years is got up.By the efficient exposing product defect of accelerated test, Curve guide impeller, improves product inherent reliability level.Reliability Enhancement Testing is a class provocative test, acceleration environment stress is adopted to excite product latent defect fast, make it show with failure mode, eliminate defect by failure reason analysis, failure mode analysis (FMA) and corrective measure, reach the object of reliability growth.Therefore, how to realize efficiently exciting to defect the key issue just becoming this new test technology.
At present mostly HALT/HASS chamber is adopted for reliability intensifying experiment, it is a kind of for Reliability Enhancement Testing, will vibrate, temperature, electricity and humidity iso-stress, carries out various different integration, and in the mode of ladder stress, sequentially or be simultaneously applied to the equipment above object under test.The temperature range of HALT/HASS case general is on the market-100 ~ 200 DEG C, and some special device test requirements document reaches the acceleration environment of superhigh temperature, therefore need to carry out some to existing HALT/HASS to improve, thus complete the Reliability Enhancement Testing of superhigh temperature.
Summary of the invention
Technical problem to be solved by this invention realizes method and the device that a kind of HALT/HASS of utilization chamber realizes the Reliability Enhancement Testing of superhigh temperature microenvironment.
To achieve these goals, the technical solution used in the present invention is: a kind of chamber with superhigh temperature microenvironment Reliability Enhancement Testing function, for do Reliability Enhancement Testing test casing in be provided with microenvironment chamber, be provided with heat-generating pipe and thermostat probe in described microenvironment chamber.
Described test casing is HALT case or HASS case, is provided with weep hole in described test casing.
Vibration table is provided with in described test casing, described microenvironment chamber is fixed on vibration table, described microenvironment chamber is provided with diffusion cavity, described diffusion cavity is by being communicated with microenvironment chamber inside with diffusion hole, described diffusion cavity is communicated with chamber external body by pipeline, or is communicated with by the blower fan of pipeline with chamber external body.
Described heat-generating pipe is positioned at the top of microenvironment chamber, and described heat-generating pipe takes the shape of the letter U, and is wrapped with stainless helical heat spreader fin at heat-generating pipe.
Described heat-generating pipe has six, and each heat-generating pipe power is 800W, and the power supply wire harness of described heat-generating pipe is drawn by resistant to elevated temperatures magnetic bead line.
Described microenvironment chamber outside has the insulation of high-density ultra-fine glass fibre cotton, and inner side adopts stainless steel materials.
Described microenvironment chamber high-density ultra-fine glass fibre cotton insulation thickness is greater than 60mm, and described diffusion cavity is the cavity that 3mm is high.
Described microenvironment chamber is provided with control panel, the data record that described control panel is provided with for set temperature operation curve temperature controller, display Current Temperatures can be real-time, and the temperature alarming lamp of display present behavior, power lights, running indicator and stopping light.
A kind of test method with the chamber of superhigh temperature microenvironment Reliability Enhancement Testing function:
1) microenvironment chamber is placed in the function completing HALT/HASS case in test casing;
2) microenvironment chamber internal heat generation, and stablize the high-set setting condition of high temperature;
3) test casing and microenvironment chamber data are read respectively after superhigh temperature microenvironment Reliability Enhancement Testing;
4) test casing and microenvironment chamber power-off, and radiating treatment is carried out in microenvironment chamber.
The present invention has expanded the function of existing HALT/HASS case, can adapt to the Reliability Enhancement Testing of superhigh temperature microenvironment, and structure is simple, and result of use is good, easy to use, adds the function of existing test equipment.
Accompanying drawing explanation
Mark in the content expressed every width accompanying drawing in description of the present invention below and figure is briefly described:
Fig. 1,2 is chamber structural representation;
Fig. 3 is heating pipe structure schematic diagram;
Fig. 4 is chamber control panel;
Fig. 5 is chamber temperature operation curve;
Mark in above-mentioned figure is: 1, test casing; 2, microenvironment chamber; 3, diffusion hole; 4, wire harness; 5, vibration table; 6, weep hole; 7, cavity is spread; 8, heat-generating pipe; 9, thermostat probe.
Detailed description of the invention
As shown in Figure 1, 2, for do Reliability Enhancement Testing test casing 1 in be provided with microenvironment chamber 2, test casing 1 is HALT case or HASS case, and being provided with weep hole 6, microenvironment chamber 2 is of a size of 400mm × 450mm × 250mm, in handstand barrel-like structure, high-density ultra-fine glass fibre is adopted in sidewall, thickness at more than 60mm, thus guarantees heat-insulating property, and microenvironment chamber 2 inner surface adopts 312 stainless steel materials.
Heat-generating pipe 8 is positioned at the top of microenvironment chamber 2, six heat-generating pipes 8 are preferably set, divide two rows, often row arranges three, as shown in Figure 3, heat-generating pipe 8 surface is 312 stainless steel materials of heat-resisting more than 600 DEG C, and at the stainless helical heat spreader fin of heat-generating pipe 8 outer wrap 312, heating properties can be improved, each heat-generating pipe 8 power is 800W, 4800W altogether, the heating rate of 20 DEG C/min can be reached, as shown in Figure 5, the internal temperature of microenvironment chamber 2 can reach 400 DEG C, after temperature stabilization, error is ± 1 DEG C, the power supply wire harness 4 of heat-generating pipe 8 is drawn by resistant to elevated temperatures magnetic bead line.Being provided with thermostat probe 9 in microenvironment chamber 2, for measuring the temperature in microenvironment chamber 2, and by controlling the operating power of heat-generating pipe 8, regulating internal temperature.
Vibration table 5 is provided with in test casing 1, microenvironment chamber 2 is fixed on vibration table 5, may be used for environmental simulation, microenvironment chamber 2 is provided with diffusion cavity 7, diffusion cavity 7 is the cavity that 3mm is high, diffusion cavity 7 is communicated with microenvironment chamber 2 inside by diffusion hole 3, to be disperseed from outside small pipeline by pipeline or blast gentle breeze by compressed air, heat is slowly depressed into tank outlet, blower fan or compressed air adopt adjustable, gentle breeze during normal work, high wind when off-test will be lowered the temperature.
Microenvironment chamber 2 electric appliance control box is stand-alone configuration, and operation in convenient test, adopts intelligent temperature controller; solid-state relay, timer, arranges 450 DEG C of temperature protection switch in exit; at internal arrangement 500 DEG C of temperature protection switch, thermostat probe 9 adopts PT100 platinum to pop one's head in.Microenvironment chamber 2 is provided with control panel, as shown in Figure 4, the data record that this control panel is provided with for set temperature operation curve temperature controller, display Current Temperatures can be real-time, and the temperature alarming lamp of display present behavior, power lights, running indicator and stopping light.The temperature controller of microenvironment chamber 2 adopts the intelligent controller of belt current (4-20mA) or voltage (0-10V) conversion output and adds a data sampling recorder, and recorder can be analyzed on computers by USB flash disk sense data.
Based on the above-mentioned chamber with superhigh temperature microenvironment Reliability Enhancement Testing function, its test method is as follows:
1) microenvironment chamber 2 is placed in the function completing HALT/HASS case in test casing 1;
2) microenvironment chamber 2 internal heat generation, and stablize the high-set setting condition of high temperature;
3) test casing 1 and microenvironment chamber 2 data are read respectively after superhigh temperature microenvironment Reliability Enhancement Testing;
4) test casing 1 and microenvironment chamber 2 power-off, and radiating treatment is carried out in microenvironment chamber 2.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (8)
1. there is a chamber for superhigh temperature microenvironment Reliability Enhancement Testing function, it is characterized in that: for do Reliability Enhancement Testing test casing in be provided with microenvironment chamber, be provided with heat-generating pipe and thermostat probe in described microenvironment chamber;
Vibration table is provided with in described test casing, described microenvironment chamber is fixed on vibration table, described microenvironment chamber is provided with diffusion cavity, described diffusion cavity is by being communicated with microenvironment chamber inside with diffusion hole, described diffusion cavity is communicated with chamber external body by pipeline, or is communicated with by the blower fan of pipeline with chamber external body.
2. the chamber with superhigh temperature microenvironment Reliability Enhancement Testing function according to claim 1, is characterized in that: described test casing is HALT/HASS case, is provided with weep hole in described test casing.
3. the chamber with superhigh temperature microenvironment Reliability Enhancement Testing function according to claim 2, it is characterized in that: described heat-generating pipe is positioned at the top of microenvironment chamber, described heat-generating pipe takes the shape of the letter U, and is wrapped with stainless helical heat spreader fin at heat-generating pipe.
4. the chamber with superhigh temperature microenvironment Reliability Enhancement Testing function according to claim 3, it is characterized in that: described heat-generating pipe has six, each heat-generating pipe power is 800W, and the power supply wire harness of described heat-generating pipe is drawn by resistant to elevated temperatures magnetic bead line.
5. the chamber with superhigh temperature microenvironment Reliability Enhancement Testing function according to claim 3, is characterized in that: described microenvironment chamber outside has the insulation of high-density ultra-fine glass fibre cotton, and inner side adopts stainless steel materials.
6. the chamber with superhigh temperature microenvironment Reliability Enhancement Testing function according to claim 5, is characterized in that: described microenvironment chamber high-density ultra-fine glass fibre cotton insulation thickness is greater than 60mm, and described diffusion cavity is the cavity that 3mm is high.
7. the chamber with superhigh temperature microenvironment Reliability Enhancement Testing function according to claim 6, it is characterized in that: described microenvironment chamber is provided with control panel, the data record that described control panel is provided with for set temperature operation curve temperature controller, display Current Temperatures can be real-time, and the temperature alarming lamp of display present behavior, power lights, running indicator and stopping light.
8. there is a test method for the chamber of superhigh temperature microenvironment Reliability Enhancement Testing function, it is characterized in that:
1) microenvironment chamber is placed in the function completing HALT/HASS case in test casing;
2) microenvironment chamber internal heat generation, and stablize the high-set setting condition of high temperature;
3) test casing and microenvironment chamber data are read respectively after superhigh temperature microenvironment Reliability Enhancement Testing;
4) test casing and microenvironment chamber power-off, and radiating treatment is carried out in microenvironment chamber.
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| CN201410849753.XA CN104525283B (en) | 2014-12-31 | 2014-12-31 | A kind of chamber and test method thereof with superhigh temperature microenvironment Reliability Enhancement Testing function |
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| CN104525283B true CN104525283B (en) | 2016-03-30 |
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| CN106644550B (en) * | 2017-02-16 | 2023-12-29 | 中国科学院测量与地球物理研究所 | Environment test system applied to precise instrument |
| CN109141392A (en) * | 2018-10-31 | 2019-01-04 | 中国船舶重工集团公司第七0七研究所 | A kind of big heat sink soaking method of high-precision optical fiber gyro |
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| JPH08219630A (en) * | 1995-02-15 | 1996-08-30 | Graphtec Corp | Thermostat |
| CN101462084A (en) * | 2007-12-19 | 2009-06-24 | 吴海林 | test chamber |
| CN103008033B (en) * | 2012-12-24 | 2014-12-03 | 苏州苏试试验仪器股份有限公司 | Chamber body structure of temperature control test chamber |
| CN203184037U (en) * | 2013-04-22 | 2013-09-11 | 张振发 | High-temperature test device for electronic spare and accessory parts |
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