Ukuhlola ukushaqeka okushisayo kuvame ukubizwa ngokuthi ukuhlola ukushaqeka kwezinga lokushisa noma ukuhamba ngebhayisikili kwezinga lokushisa, izinga lokushisa eliphezulu neliphansi lokuhlola ukushaqeka kwe-thermal.
Izinga lokushisa/ukupholisa alikho ngaphansi kuka-30℃/ngomzuzu.
Ibanga lokushintsha kwezinga lokushisa likhulu kakhulu, futhi ubunzima bokuhlolwa buyanda ngokunyuka kwezinga lokushisa lokushintsha.
Umehluko phakathi kokuhlolwa kokushaqeka kwezinga lokushisa nokuhlolwa komjikelezo wezinga lokushisa ngokuyinhloko kuyindlela ehlukene yomthwalo wokucindezeleka.
Ukuhlolwa kokushaqeka kwezinga lokushisa kuhlola ikakhulukazi ukwehluleka okubangelwa ukulimala kokukhasa nokukhathala, kuyilapho umjikelezo wezinga lokushisa uhlola ngokuyinhloko ukwehluleka okubangelwa ukukhathala kwe-shear.
Ukuhlolwa kokushaqeka kwezinga lokushisa kuvumela ukusetshenziswa kwedivayisi yokuhlola enezikhala ezimbili; ukuhlolwa komjikelezo wezinga lokushisa kusebenzisa idivayisi yokuhlola yesikhala esisodwa. Ebhokisini elinezikhala ezimbili, izinga lokushisa kufanele libe likhulu kuno-50℃/ngomzuzu.
Izimbangela zokushaqeka kwezinga lokushisa: ukushintsha kwezinga lokushisa okukhulu phakathi nezinqubo zokukhiqiza nokulungisa njengokuphinda kufakwe i-solder, ukomisa, ukucutshungulwa kabusha, nokulungisa.
Ngokusho kwe-GJB 150.5A-2009 3.1, ukushaqeka kwezinga lokushisa kuwushintsho olubukhali kuzinga lokushisa elizungezile lemishini, futhi izinga lokushisa lokushintsha lingaphezu kuka-10 degrees/min, okuwukushaqeka kwezinga lokushisa. I-MIL-STD-810F 503.4 (2001) inombono ofanayo.
Kunezizathu eziningi zokushintsha kwezinga lokushisa, ezishiwo kumazinga afanelekile:
I-GB/T 2423.22-2012 Ukuhlolwa Kwemvelo Ingxenye 2 Ukuhlolwa N: Ukushintsha Kwezinga Lokushisa
Izimo zenkundla zokushintsha kwezinga lokushisa:
Ukushintsha kwezinga lokushisa kuvamile ezintweni zikagesi nasezintweni. Uma okokusebenza kungavuliwe, izingxenye zayo zangaphakathi zithola ukushintsha kwezinga lokushisa okunensa kunezingxenye ezingaphandle kwayo.
Ukushintsha kwezinga lokushisa okusheshayo kungalindelwa ezimeni ezilandelayo:
1. Uma okokusebenza kudluliswa kusuka endaweni efudumele yasendlini kuya endaweni ebandayo yangaphandle, noma okuphambene nalokho;
2. Uma izinto zokusebenza zichayeka emvuleni noma zicwiliswa emanzini abandayo futhi kungazelelwe kuphole;
3. Ifakwe kumishini yangaphandle ehamba emoyeni;
4. Ngaphansi kwezimo ezithile zokuhamba nezokugcina.
Ngemuva kokusetshenziswa kwamandla, ama-gradients okushisa aphezulu azokhiqizwa kumishini. Ngenxa yokushintsha kwezinga lokushisa, izingxenye zizogcizelelwa. Isibonelo, eduze kwe-resistor enamandla amakhulu, imisebe izobangela ukuthi izinga lokushisa elingaphezulu lezingxenye eziseduze likhuphuke, kuyilapho ezinye izingxenye zihlala zibanda.
Uma isistimu yokupholisa ivuliwe, izingxenye ezipholiswe ngokwenziwa zizothola izinguquko ezisheshayo zezinga lokushisa. Ukushintsha kwezinga lokushisa okusheshayo kwezingxenye nakho kungabangelwa ngesikhathi sokwenziwa kwemishini. Inombolo nobukhulu bokushintsha kwezinga lokushisa kanye nesikhathi sokuphumula kubalulekile.
I-GJB 150.5A-2009 Izindlela Zokuhlola Imvelo Zaselabhorethri Yezisetshenziswa Zamasosha Ingxenye 5:Temperature Shock Test:
3.2 Isicelo:
3.2.1 Imvelo Ejwayelekile:
Lokhu kuhlola kusebenza kumishini engase isetshenziswe ezindaweni lapho izinga lokushisa lomoya lingashintsha ngokushesha. Lokhu kuhlola kusetshenziselwa kuphela ukuhlola imiphumela yoshintsho olusheshayo lwezinga lokushisa endaweni yangaphandle yezinto zokusebenza, izingxenye ezibekwe endaweni engaphandle, noma izingxenye zangaphakathi ezifakwe eduze kwendawo yangaphandle. Izimo ezijwayelekile zimi kanje:
A) Izinto ezisetshenziswayo zidluliswa phakathi kwezindawo ezishisayo nezingamazinga okushisa aphansi;
B) Iphakanyiswa endaweni yokushisa ephezulu emhlabathini iye endaweni ephakeme (kuyashisa kuya kubanda nje) ngumthwali osebenza kahle kakhulu;
C) Lapho kuhlolwa izinto zangaphandle kuphela (ukupakishwa noma okokusebenza kwendawo), yehliswa egobolondweni lendiza eshisayo evikelayo ngaphansi kokuphakama okuphezulu nezimo eziphansi zokushisa.
3.2.2 Ukuhlola Ukuphepha Nokucindezeleka Kwendawo:
Ngokungeziwe kulokho okuchazwe ku-3.3, lokhu kuhlolwa kuyasebenza ukuze kubonise izinkinga zokuphepha kanye nokukhubazeka okungenzeka kuvame ukwenzeka lapho okokusebenza kuvezwe izinga lokushisa eliphansi elingaphansi kwezinga lokushisa elidlulele (inqobo nje uma izimo zokuhlola zingeqi idizayini. umkhawulo wezinto zokusebenza). Nakuba lokhu kuhlolwa kusetshenziswa njengokuhlola ukucindezeleka kwemvelo (ESS), kungase futhi kusetshenziswe njengokuhlolwa kokuhlola (usebenzisa ukushaqeka kwezinga lokushisa lokushisa okwedlulele kakhulu) ngemva kokwelashwa okufanelekile kobunjiniyela ukuze kuvele amaphutha okungenzeka angenzeka lapho okokusebenza kuvezwa izimo. ngaphansi kwezinga lokushisa elidlulele.
Imithelela yokushaqeka kwezinga lokushisa: GJB 150.5A-2009 Indlela Yokuhlola Imvelo Yaselabhorethri Yezisetshenziswa Zamasosha Ingxenye 5: Ukuhlola Ukushaqeka Kwezinga lokushisa:
4.1.2 Imithelela Yemvelo:
Ukushaqeka kwezinga lokushisa kuvame ukuba nomthelela omubi kakhulu engxenyeni eseduze nendawo yangaphandle yezinto zokusebenza. Ukuqhela kude nendawo yangaphandle (yebo, ihlobene nezici zezinto ezifanele), ukuguquka kokushisa kuhamba kancane kanye nomphumela ongabonakali. Amabhokisi okuthutha, okokufaka, njll. nakho kuzonciphisa umthelela wokushaqeka kwezinga lokushisa ezintweni ezivalekile. Ukushintsha kwezinga lokushisa okusheshayo kungase kuthinte okwesikhashana noma unomphela ukusebenza kwemishini. Okulandelayo yizibonelo zezinkinga ezingase ziphakame lapho okokusebenza kuchayeke endaweni yokushaqeka kwezinga lokushisa. Ukucabangela izinkinga ezilandelayo ezijwayelekile kuzosiza ekunqumeni ukuthi ingabe lokhu kuhlola kuyilungele yini imishini engaphansi kokuhlolwa.
A) Imiphumela yomzimba ejwayelekile yilena:
1) Ukuphahlazeka kweziqukathi zengilazi nezinsimbi ezibonakalayo;
2) Izingxenye ezihambayo ezinamathele noma ezixegayo;
3) Imifantu kuma-pellets aqinile noma amakholomu eziqhumeni;
4) Amazinga ahlukene okuncipha noma okunwetshwa, noma amazinga obunzima ezinto ezahlukahlukene;
5) Ukuguqulwa noma ukuphuka kwezingxenye;
6) Ukuqhekeka kwezingubo ezingaphezulu;
7) Ukuvuza ezindlini ezivaliwe;
8) Ukwehluleka kokuvikela ukufakwa kwe-insulation.
B) Imiphumela yamakhemikhali ejwayelekile yilena:
1) Ukuhlukaniswa kwezingxenye;
2) Ukwehluleka kokuvikelwa kwe-reagent yamakhemikhali.
C) Imiphumela kagesi ejwayelekile yilena:
1) Izinguquko ezingxenyeni zikagesi neze-elekthronikhi;
2) Ukujiya ngokushesha kwamanzi noma isithwathwa okubangela ukwehluleka kwe-electronic noma kwemishini;
3) Ugesi omile ngokweqile.
Inhloso yokuhlolwa kokushaqeka kwezinga lokushisa: Ingasetshenziselwa ukuthola ukwakheka komkhiqizo kanye nokucubungula amaphutha ngesikhathi sesigaba sokuthuthukisa ubunjiniyela; ingasetshenziswa ukuze kuqinisekiswe ukuguquguquka kwemikhiqizo ezindaweni ezishaqisayo zezinga lokushisa ngesikhathi sokuphothulwa komkhiqizo noma ukuhlonzwa komklamo kanye nezigaba zokukhiqiza ngobuningi, futhi inikeze isisekelo sokuphothulwa komklamo kanye nezinqumo zokwamukela ukukhiqizwa ngobuningi; uma isetshenziswa njengokuhlola ukucindezeleka kwemvelo, inhloso iwukuqeda ukwehluleka komkhiqizo kusenesikhathi.
Izinhlobo zokuhlolwa kokushintsha kwezinga lokushisa zihlukaniswe ngezinhlobo ezintathu ngokuya nge-IEC namazinga kazwelonke:
1. Inombolo Yokuhlola: Ukushintsha kwezinga lokushisa okusheshayo ngesikhathi sokuguqulwa esicacisiwe; umoya;
2. Hlola I-Nb: Ukushintsha kwezinga lokushisa ngezinga elishiwo lokushintsha; umoya;
3. Test Nc: Ukushintsha kwezinga lokushisa okusheshayo ngamathangi amabili awuketshezi; uketshezi;
Ezivivinyweni ezintathu ezingenhla, u-1 no-2 zisebenzisa umoya njengomthombo, kanti okwesithathu zisebenzisa uketshezi (amanzi noma olunye uketshezi) njengomthombo. Isikhathi sokuguqulwa sika-1 no-2 side, futhi isikhathi sokuguqulwa sika-3 sifushane.
Isikhathi sokuthumela: Sep-05-2024