- Ndodo yopakira pansi yokhala ndi zigawo ziwiri imagwiritsa ntchito zolumikizira zokhala ndi ulusi kuti zigwirizane ndi zigawo za 1.2 m, zomwe zimathandiza kuti kuyika kukhale mamita 3, 6, 10 kapena kuposerapo popanda chowongolera cha ndodo chofanana.
- Ndodo za chidutswa chimodzi zimachepetsedwa ndi kutalika kwa mayendedwe (1.2–3.0 m). Pa malo osaya kwambiri zimagwira ntchito; poyendetsa mozama mu nthaka yolimba kwambiri, njira yokhayo ndiyo yogwiritsira ntchito.
- Cholumikiziracho ndiye chofooka kwambiri. Cholumikizira chathu cha mkuwa chokhala ndi ulusi wa mbali ziwiri (≥580 N/mm2 tensile strength, ISO 9001:2008) chimapangidwa ndi ulusi wopindika titapeza 70% ya kulephera kwa minda chifukwa cha ulusi wopingasa.
- Ndodo zachitsulo zokhala ndi mkuwa (mkuwa ≥0.254 mm, kuyera ≥99.95%, kulunjika ≤1 mm/m) zimakhala ndi moyo wautumiki wa zaka ≥50 pamene chomangiracho chapambana mayeso athu opindika madigiri 180.
- Mu pulojekiti ya ku Abuja, Nigeria ya 2023, ndodo zathu zogawanika zinafika pa 4.2 ohms pa kuya kwa 6 m mu nthaka ya laterite yolemera 800 ohm-m, kuchokera pa 28 ohms pa 1.5 m ndi ndodo za chidutswa chimodzi.
- Kulephera kwakukulu komwe timakuona ndi kulumikiza ma coupler m'malo amatope. Kusintha kwathu kwa chamfered-entry kunachepetsa kulephera kumeneku ndi pafupifupi 70% mu deta yathu yothandizira ya 2022-2024.
Kumayambiriro kwa chaka cha 2023, tinalandira foni kuchokera kwa kontrakitala wamagetsi ku Abuja, Nigeria. Iye anayendetsa ndodo zinayi za 2.4 m zachitsulo chimodzi zophimbidwa ndi mkuwa m'nthaka ya laterite pamalo atsopano a nsanja ya telecom. Zonse zinayi zinali ndi ma ohms opitilira 25—pamwamba kwambiri pa cholinga cha 5-ohm chomwe amafunikira. Analibe chowongolera ndodo chomwe chingathe kugwira ntchito yayitali kuposa mamita 3, ndipo wogulitsa ndodo zazitali kwambiri anali ku Lagos, mtunda wa makilomita 700. Tinamutumizira zida za ndodo zachitsulo ndi zolumikizira zamkuwa. Patatha milungu iwiri, gulu lake linayendetsa ndodo zomwezo mpaka mamita 6 kuya pogwiritsa ntchito hammer yozungulira, ndipo kukana koyesedwa kunali 4.2 ohms. Ntchito imeneyo inasintha momwe timaganizira za chisankho cha chitsulo chimodzi motsutsana ndi chitsulo: si nkhani yokonda, ndi nkhani ya zomwe nthaka yanu, zida zanu, ndi mwayi wopeza malo anu.
- Gawo vs. Chigawo Chimodzi: Chisankho Sichokhudza Zokonda
- Chifukwa Chake Tinakonzanso Cholumikizira Chathu Pambuyo pa Mliri Wophatikizana
- Chitsulo Chokhala ndi Mkuwa: Mafotokozedwe Omwe Timayesa ndi Kulephera Komwe Timapeza
- Kukhazikitsa Ndodo Yozama Pansi: Zimene Tinaphunzira Kuchokera ku Zolakwa Zakumunda
- Njira Zinayi Zolephera Kuchokera pa Zaka 17 Zokhazikitsa Kupanga Zinthu
- Deta Yokhudza Kukhazikika kwa Dothi Kuchokera ku Mapulojekiti Enieni: Chifukwa Chake Kuzama Kumasintha Chilichonse
- Mtengo Wonse Woyikidwa: Pamene Gawo Likugonjetsa Chidutswa Chimodzi Pachinthu Chanu Chachikulu
- Mapeto
- Mafunso Ofunsidwa Kawirikawiri
Gawo vs. Chigawo Chimodzi: Chisankho Sichokhudza Zokonda
Mfundo ya ndodo ya chidutswa chimodzi ndi yosavuta komanso yolondola: palibe malo olumikizirana omwe amatanthauza kuti palibe malo ofooka. Ndodo imodzi yokhala ndi mkuwa ya mamita 2.4 yomwe imakokedwa molunjika mu dongo lonyowa idzakhala yolimba kuposa nyumba yanu, ndipo imadula mtengo wocheperako kuposa malo olumikizirana a kutalika komweko. Timagulitsabe ndodo zambiri za chidutswa chimodzi kuposa zida zolumikizirana, ndipo pazifukwa zomveka: poyika zinthu zosaya kwambiri m'nthaka yosalimba kwambiri, ndiye chisankho choyenera.
Koma m'zaka 17 zopangira zinthu zomangira pansi, taona njira yofanana: mapulojekiti omwe amabwerera kwa ife omwe ali ndi mavuto olimbana kwambiri nthawi zambiri amakhala okhazikika m'nthaka youma, yamiyala, kapena yamchenga komwe kontrakitala amakankhira ndodoyo kutalika kwake konse ndikuyima—chifukwa analibe njira yoti apitirire mozama.ndodo yoyambira pansichimachotsa choletsa ichi. Gawo lililonse ndi lalitali mamita 1.2, lolumikizidwa ndizolumikizira za ulusi, ndipo mukupitiriza kuwonjezera magawo mpaka mita yoyezera kukana ifike pansi pa cholinga chanu. Tili ndi makasitomala ku Saudi Arabia omwe alumikiza ndodo za sectional kufika mamita 9 mu mchenga wa m'chipululu, ndi makasitomala ku Democratic Republic of Congo omwe afika mamita 12 mu tropical laterite.
TheMuyezo wa IEEE 80Kukhazikitsa pansi pa siteshoni sikukakamiza kapangidwe kamodzi kuposa kam'modzi. Kumafotokoza zotsatira zake: kukana pansi kotsika mokwanira kuti zitsimikizire chitetezo panthawi yamavuto. Momwe mungakwaniritsire kukana kumeneko ndi chisankho chaukadaulo cha malo enieni, osati chanzeru.
Funso lofunika kwambiri si lakuti “ndi chiyani chabwino” koma “nchiyani chimachitika ndodo yanu imodzi ikapanda kutalika mokwanira?” Ku Abuja, yankho linali: mumataya milungu iwiri mukafuna ndodo zazitali kuchokera ku Lagos. Ku Riyadh, yankho linali: mumayitanitsa zida zogwiritsira ntchito zigawo kuchokera kwa ife ndikupitiliza kuyendetsa tsiku lomwelo. Kapangidwe ka zigawo kamakupangitsani kukhala osinthasintha, ndipo malinga ndi zomwe takumana nazo, kusinthasintha ndiko komwe kumasiyanitsa mapulojekiti omwe amakwaniritsa zolinga zawo zotsutsa ndi mapulojekiti omwe sakwaniritsa zolinga zawo.
Chifukwa Chake Tinakonzanso Cholumikizira Chathu Pambuyo pa Mliri Wophatikizana
Mu 2021, gulu lathu lothandizira linaona kuwonjezeka kwa madandaulo okhudzana ndi ma coupler. Tinalemba zochitika 47 zolumikizana m'maiko 14 m'chaka chimodzi. Kachitidwe kake kanali kofanana: wokhazikitsayo anali kugwira ntchito mu ngalande yamatope, anayambitsa ulusi wolumikizira pang'ono, ndipo ulusi wa mkuwa unasintha ulusi wa ndodo yachitsulo usanachite. Mkuwa ndi wofewa malinga ndi kapangidwe kake (tikufuna kuti coupler iperekedwe nsembe isanayambe ndodo, kuti ndodoyo igwiritsidwenso ntchito), koma kusankha kwa kapangidwe kameneka kunapanga njira yolephera yomwe sitinali kuyembekezera.
Tinafufuza chomwe chimayambitsa vutoli kuchokera ku geometry yolowera ulusi. Ulusi wamba wa V pa ndodo ndi cholumikizira unali ndi m'mphepete wakuthwa wolowera womwe unkapangitsa kuti zikhale zosavuta kuyambitsa ulusiwo pa ngodya, makamaka pamene ulusiwo unali woipitsidwa ndi dothi. Chomwe tinakonza: tinadula ulusi woyamba pa ndodo ndi cholumikizira, ndikupanga ngodya yokulirapo yolowera yomwe imadziyika yokha pakati pa cholumikiziracho ngakhale itayamba molakwika pang'ono. Tinawonjezeranso chizindikiro chowongolera (mzere wojambulidwa ndi laser pa thupi la cholumikizira) chomwe chimasonyeza chokhazikitsa pamene ulusiwo walumikizidwa bwino.
Zotsatira zake zinali zofunika kwambiri. Mu 2022, madandaulo okhudza kuyika zinthu m'magawo osiyanasiyana adatsika kufika pa 19. Mu 2023, kufika pa 11. Mu theka loyamba la 2024, kufika pa 3. Kumeneko ndi kuchepetsa kwa pafupifupi 70 peresenti, ndipo sikunatiwonongere kalikonse—chamfer ndi kusintha kwa zida, osati kusintha kwakukulu. Uku ndi kusintha pang'onopang'ono komwe zaka 17 za mayankho opanga zinthu zimakupatsani mwayi wochita.
Zipangizo zolumikizira zokha zimapangidwa ndi zitsulo zolimba za mkuwa (osati zotayidwa). Tinasankha mkuwa m'malo mwa chitsulo pazifukwa zitatu. Choyamba, mkuwa suchita dzimbiri m'dothi monga momwe chitsulo chosavuta chimachitira—tafukula zolumikizira kuchokera ku zipangizo zakale 15 ku Saudi Arabia zomwe zinkaoneka ngati zatsopano. Chachiwiri, kusiyana kwa mphamvu ya galvanic pakati pa mkuwa ndi chitsulo chophimbidwa ndi mkuwa ndi kochepa (kochepera 50 mV), zomwe zikutanthauza kuti dzimbiri la electrochemical pamalo olumikizira ulusi ndi lochepa. Chachitatu, makina a mkuwa amalimbana ndi ulusi kwambiri kuposa chitsulo, zomwe ndizofunikira mukamagwiritsa ntchito ulusi ndi dzanja mu ngalande yamatope ndipo zimafunika kuti cholumikiziracho chigwirizane bwino.
Mphamvu yokoka ya cholumikizira chathu cha mkuwa (≥580 N/mm2) imaposa mphamvu yotulutsa ya chitsulo chapakati m'magawo a ndodo. Timatsimikiza izi pa gulu lililonse lopanga: timakoka ma assemblies atatu kuti awonongeke pa choyesera chokoka cha hydraulic. Ndodo nthawi zonse imasweka pafupifupi 25 mm kuchokera kumaso kwa cholumikizira—osati pa cholumikizira chokha. Izi ndi kapangidwe kake: tikufuna kuti ndodo ilephereke chisanachitike cholumikizira, chifukwa ndodo yolephera ikhoza kuchotsedwa ndikusinthidwa, pomwe cholumikizira cholephera chingasiye gawo litagwidwa pansi pa nthaka.
Chitsulo Chokhala ndi Mkuwa: Mafotokozedwe Omwe Timayesa ndi Kulephera Komwe Timapeza
Wopanga aliyense amalemba zinthu zomwezo: makulidwe a mkuwa, kuyera, mphamvu yokoka, kulunjika. Kusiyana kwake ndi ngati zinthuzo zayesedwa kapena kuganiziridwa. Ku fakitale yathu ku Xinchang, timayesa chilichonse chomwe chimapangidwira, ndipo timakana zinthu zomwe sizingapambane. Izi ndi zomwe timayesa, momwe timayesera, ndi zomwe tagwira.
Kukhuthala kwa mkuwa: ≥0.254 mm. Uwu ndiyeUL 467osachepera. Timayesa ndi geji yoyezera makulidwe a ultrasonic yolinganizidwa bwino pa mfundo zitatu pa ndodo iliyonse (nsonga, pakati, maziko). Avereji yathu yopanga ndi 0.28 mm, yokhala ndi mtunda wa 0.254 mpaka 0.32 mm. Mu 2022, tinakana gulu lonse la cathode yamkuwa lomwe likubwera kuchokera kwa wogulitsa watsopano pomwe mayeso oyamba adawonetsa makulidwe apakati a 0.22 mm. Wogulitsa adati cathode idakwaniritsa zofunikira; geji yathu ya ultrasonic idanena zosiyana. Tinasintha ogulitsa.
Kuyera kwa mkuwa: ≥99.95 peresenti. Timatsimikizira izi ndi kusanthula kwa spark-OES (optical emission spectrometry) pa gulu lililonse la mkuwa lomwe likubwera. Zoipa zoposa 0.05%—makamaka sulfure ndi phosphorous—zimathandizira dzimbiri mu nthaka ya acidic. Mu 2023, gulu landodo yachitsulo yokutidwa ndi mkuwakuchokera ku mzere wathu wopanga womwe unayesedwa pa kuyera kwa 99.91%. Tinafufuza vutoli ku anode yamkuwa yoipitsidwa mu thanki ya electroplating. Tinachotsa gulu lonse (pafupifupi ndodo 2,000) m'malo motumiza zinthu zomwe zingawonongeke msanga m'munda.
Kulimba kwa chigwirizano: Kuyesa kupindika kwa madigiri 180. Chigawo cha mkuwa sichiyenera kusweka kapena kusweka pamene ndodo yapindika madigiri 180 pa 100 mm radius. Kuyesaku kumatsanzira mphamvu zogundana poyendetsa. Timachichita pa malo aliwonse opangira. Ngati mkuwa utuluka, kuchuluka kwa magetsi opikira kunali kochepa kwambiri ndipo chigwirizanocho ndi chamakina, osati chachitsulo. Talephera mayesowa kawiri m'zaka zitatu zapitazi, nthawi zonse ziwirizi zikutsatiridwa ndi kuchepa kwa magetsi mu chingwe chopikira magetsi chomwe chimayambitsidwa ndi basi yopasuka.
Kuwongoka: ≤1 mm/m. Timawongola ndodo iliyonse pa hydraulic press titamaliza kuyika electroplating, kenako timayang'ana poyigubuduza pa flat granite surface plate. Ndodo zokhala ndi kupotoka kopitilira 1 mm/m zimakanidwa. Izi ndizofunikira kwambiri kuposa momwe anthu ambiri amaganizira: ndodo yokhala ndi uta wa 3 mm/m sidzayendetsa molunjika, ndipo ndodo yomwe imachoka pa yoyima sidzafika ku kuya komwe mukufuna popanda dzenje loyesera. Tawona ndodo zochokera kumayiko ena zopangidwa ndi uta wa 4 mpaka 5 mm/m, zomwe zimapangitsa kuti zisagwiritsidwe ntchito poyendetsa mozama.
Kukhazikitsa Ndodo Yozama Pansi: Zimene Tinaphunzira Kuchokera ku Zolakwa Zakumunda
Njira yokhazikitsirandodo yoyambira pansiSizovuta, koma gawo lililonse lili ndi njira zolephera zomwe taphunzira movutikira—kudzera mu kuyimba mafoni kwa makasitomala, zopempha chitsimikizo, ndi kupita patsamba.
Dzenje loyendetsa: sitepe yomwe akatswiri ambiri amalephera. Mu nthaka yopapatiza kapena yamiyala, nthawi zonse yambani ndi dzenje loyendetsa pogwiritsa ntchito chotsukira pansi chocheperako pang'ono kuposa kukula kwa ndodo. Mu 2022, kontrakitala ku Dammam, Saudi Arabia, adayendetsa magawo atatu a ndodo mumchenga wachipululu wopanda dzenje loyendetsa. Nsonga ya ndodo inapatuka pamwala wobisika pa 1.8 m, ndikupindika ndodoyo madigiri 15 kuchokera molunjika. Anayenera kuchotsa gawo lopindika (ntchito ya mphindi 45 ndi jeke) ndikuyambanso ndi dzenje loyendetsa. Dzenje loyendetsa linatenga mphindi 5 ndipo linaletsa mavuto onse opindika pambuyo pake.
Mphamvu yolumikizira: yolimba kwambiri komanso yolimba kwambiri zonse zimalephera. Tidasankha 50 mpaka 80 Nm pa ndodo za mainchesi 5/8 ndi 60 mpaka 100 Nm pa ndodo za mainchesi 3/4. Mu pulojekiti ya 2023 ku Dar es Salaam, Tanzania, okhazikitsa adamanga ma coupler ndi manja popanda wrench. Pakuyendetsa, ma coupler awiri adamasuka, ndipo magawo adagawikana pansi pa nthaka. Gawo lapamwamba lidapitiliza kuyendetsa, koma gawo la pansi lidakhalabe lakuya kwa mamita 2. Anayenera kusiya magawo onse awiri ndikuyamba dzenje latsopano pamtunda wa masentimita 30. Kuyambira pamenepo, taphatikiza khadi lofotokozera mphamvu mu bokosi lililonse la zida.
Kuyeretsa ulusi: Masekondi 20 omwe amaletsa kusokonezeka kwa mphindi 20. Musanapange ulusi pa cholumikizira, tsukani dothi kuchokera pa ulusi wa ndodo. M'malo amatope (omwe amapezeka nthawi zambiri m'malo otentha), dothi lopakidwa mu ulusi limagwira ntchito ngati losakhwima ndipo lingapangitse cholumikizira kugwira pakati. Takhala ndi zitsimikizo zitatu kuchokera ku Southeast Asia komwe wokhazikitsayo adakakamiza cholumikizira chodzaza ndi dothi ndikuchotsa ulusi wa mkuwa. Burashi yolimba (yomwe tsopano tikuiyika mu zida zathu zoyikira) imathetsa izi mumasekondi 20.
Kuyesa kukana: yesani musanapereke kuzama kwambiri. Gawo lililonse likakhazikitsidwa, yesani kukana kwa nthaka ndi choyesera chotsika cha kuthekera, paNFPA 70 (Khodi Yamagetsi Yadziko Lonse)zofunikira. Ngati muli kale pansi pa zomwe mukufuna, siyani kuyendetsa galimoto. Tawona makontrakitala ku Nigeria akuyendetsa galimoto mpaka mamita 7 pomwe mamita 4 akanakwanira, kuwononga magawo atatu ndi ntchito yowayika. Njira yowonjezera—kuyesa, kusankha, kuyendetsa—ndiyo phindu lalikulu lazachuma la kapangidwe ka magawo.
Njira Zinayi Zolephera Kuchokera pa Zaka 17 Zokhazikitsa Kupanga Zinthu
Pambuyo popereka zinthu zoyambira kumayiko opitilira 60, tili ndi chithunzi chomveka bwino cha zomwe zalephera m'munda ndi chifukwa chake. Nazi njira zinayi zodziwika bwino zolephera, zomwe zasankhidwa malinga ndi kuchuluka kwa deta yathu yothandizira kuyambira 2018 mpaka 2024.
Kulephera 1: Kulumikizana kwa ma cross-thread (47% ya matikiti onse othandizira). Takambirana kale pamwambapa. Kukonzanso kwa chamfered-entry kwachepetsa izi kuchokera pa zochitika 47 mu 2021 kufika pa 3 mu theka loyamba la 2024.
Kulephera 2: Kugawanika kwa mkuwa poyendetsa (23% ya matikiti). Ngati mgwirizano pakati pa wosanjikiza wa mkuwa ndi pakati pa chitsulo ndi wamakina osati wachitsulo, mphamvu zobwerezabwereza zogundana poyendetsa zimatha kupangitsa mkuwa kubwereranso kumapeto. Izi zimapangitsa kuti bowa lisamayende bwino ndipo zimapangitsa kuti pakati pa chitsulocho pakhale dzimbiri. Kuyesa kwathu kopindika kwa madigiri 180 kumagwira izi ku fakitale, koma timazionabe m'ndodo kuchokera kwa opanga ena omwe makasitomala athu adagula kwina ndikusakaniza ndi ma coupler athu.
Kulephera 3: Ndodo ikupindika m'nthaka ya miyala (18% ya matikiti). Ngakhale ndi core yolimba ya 600+ N/mm2, ndodo yomwe imagunda mwala wobisika pa ngodya imapindika. Ndodo ikapindika madigiri opitilira angapo, sidzayendetsa molunjika. Kupewa: nthawi zonse gwiritsani ntchito dzenje loyesera m'nthaka yomwe ikuganiziridwa kuti ndi miyala. Takhala ndi madandaulo awa kuchokera ku mapulojekiti ku Turkey, Iran, ndi madera amapiri aku East Africa.
Kulephera 4: Kuwonongeka kwa cholumikizira mu dothi lamchere (12% ya matikiti). M'malo okhala m'mphepete mwa nyanja kapena amchere, mawonekedwe a ulusi amatha kuwonongeka mwachangu kuposa thupi la ndodo ngati zinthu zolumikizira sizikugwirizana ndi galvanic. Zolumikizira zathu za mkuwa zimachepetsa chiopsezo ichi chifukwa kusiyana kwa mphamvu ya galvanic pakati pa mkuwa ndi chitsulo chokhala ndi mkuwa ndi kochepera 50 mV. Pamalo okhala ndi mchere wambiri (m'mphepete mwa nyanja ku Saudi Arabia, Qatar, UAE), timaperekanso njira yolumikizira yachitsulo chosapanga dzimbiri.
Deta Yokhudza Kukhazikika kwa Dothi Kuchokera ku Mapulojekiti Enieni: Chifukwa Chake Kuzama Kumasintha Chilichonse
Chifukwa choyendetsa mozama ndi kukana kwa nthaka. M'mitundu yambiri ya nthaka, kukana kwa nthaka kumachepa ndi kuzama chifukwa nthaka yozama imakhala ndi chinyezi chambiri komanso mchere wambiri wosungunuka. Nazi miyeso yoyezera kukana kwa nthaka kuchokera ku mapulojekiti atatu enieni komwe tidapereka zida zogwirira ndodo:
Abuja, Nigeria (nthaka ya laterite, 800 ohm-m): 1.5 m ndodo imodzi = 28 ohms. 3 m gawo = 14 ohms. 6 m gawo = 4.2 ohms. Wopanga makonzedwe anafunika 5 ohms; anafika pa kuya pafupifupi 5.5 m ndi dongosolo la magawo.
Riyadh, Saudi Arabia (mchenga wa m'chipululu, 1,200 ohm-m): 2.4 m ndodo imodzi = 45 ohms. 3 m gawo = 32 ohms. 6 m gawo = 12 ohms. 9 m gawo = 6.8 ohms. Mafotokozedwe a polojekitiyi amafunikira 10 ohms; adafika pa kuya pafupifupi 7 m.
Dar es Salaam, Tanzania (dothi louma, 200 ohm-m): 1.5 m ndodo imodzi = 8 ohms. Chiyerekezocho chinkafuna 5 ohms. Kukulitsa kamodzi kwa 1.5 m (3 m yonse) kunabweretsa kukana kufika pa 4.8 ohms. Pankhaniyi, nthaka inali yogwirizana ndipo kukulitsa pang'ono kokha kunafunika.
TheMuyezo wa IEEE 142 (Buku Lobiriwira)imapereka njira yowerengera kukana kwa ndodo yoyendetsedwa: R = (ρ / 2πL) × (ln(4L/a) – 1), pomwe ρ ndi kukana kwa nthaka, L ndi kutalika kwa ndodo, ndipo a ndi radius ya ndodo. Fomulayi imatsimikizira zomwe deta yathu yamunda ikuwonetsa: kukana kumafanana ndi kutalika kwa ndodo. Kuwirikiza kawiri kuya nthawi zambiri kumachepetsa kukana ndi 40 mpaka 60 peresenti, kutengera momwe nthaka imakhalira.
Mfundo yothandiza ndi yosavuta. Mu nthaka yosalimba kwambiri (yosakwana 300 ohm-m), ndodo imodzi ya 1.5 mpaka 3 m nthawi zambiri imakhala yokwanira. Mu nthaka yosalimba kwambiri (300 mpaka 1,000 ohm-m), mungafunike 3 mpaka 6 m, zomwe zikutanthauza kuti yagawanika.Utsogoleri wa Chitetezo ndi Umoyo Pantchito (OSHA)imafuna olemba ntchito kuti akhazikitse mapulogalamu okhazikika a zida zomangira pansi pamalo omangira, zomwe zimaphatikizapo kukhazikitsa bwino ma electrode omangira pansi. Mu nthaka yolimba kwambiri (yoposa 1,000 ohm-m), mudzafunika mamita 6 kapena kuposerapo, ndipo njira yokhayo yothandiza yofikira kumeneko ndiyo njira yokhayo yothandiza.
Mtengo Wonse Woyikidwa: Pamene Gawo Likugonjetsa Chidutswa Chimodzi Pachinthu Chanu Chachikulu
Mtengo wa zinthu pa mita imodzi ya makina ogawa magawo ndi wokwera kuposa wa chidutswa chimodzi, chifukwa mukulipira zolumikizira ndi ma phukusi ena. Koma ndalama zonse zomwe zayikidwa zimaphatikizapo antchito, zoyendera, zinyalala, ndi zida, ndipo kufananiza kumasinthasintha momwe makina ogawa magawo amakhalira pamene kuya kwake kukukulirakulira.
Kusunga ndalama zoyendera. Mu 2023, kasitomala wina ku Kampala, Uganda, anatiuza kuti mtengo wonyamula ndodo za mamita atatu kuchokera padoko kupita kumalo ogwirira ntchito (makilomita 200 pamisewu yopanda konkire) unali pafupifupi 40% ya mtengo wa ndodo, chifukwa galimoto iliyonse inkanyamula ndodo 200 zokha chifukwa cha kutalika kwake. Atasintha kupita ku zigawo za mamita 1.2, galimoto yomweyo inkanyamula zigawo 500 paulendo uliwonse. Mtengo wonyamula pa mita imodzi ya ndodo unatsika ndi theka.
Kuchepetsa zinyalala. Mu nthaka ya miyala, ndodo za chidutswa chimodzi zomwe zimapindika poyendetsa ndi zinyalala. Makasitomala athu aku Middle East amanena kuti zinyalala zimakhala pakati pa 8 mpaka 12 peresenti ndi ndodo za chidutswa chimodzi m'nthaka ya m'chipululu cha miyala, poyerekeza ndi zosakwana 2 peresenti ndi njira zogawikana (chifukwa zigawo zazifupi ndizosavuta kuzilamulira ndipo sitepe ya dzenje loyesera imatsatiridwa nthawi zonse). Chiwopsezo cha zinyalala cha 10% pa projekiti ya ndodo 200 chimatanthauza ndodo 20 zotayika ndi ntchito yozichotsa.
Mtengo wa zida. Ndodo imodzi yotalika kuposa 2.4 m imafuna chowongolera chapadera cha ndodo chokhala ndi chuck yayitali. Dongosolo la magawo limatha kuyendetsedwa ndi nyundo yozungulira yokhazikika yokhala ndi adaputala ya chuck—zipangizo zomwe akatswiri ambiri amagetsi ali nazo kale. Kusunga ndalama pa kubwereka zida kungathandize kuchepetsa mtengo wa ma coupler pamapulojekiti ang'onoang'ono mpaka apakatikati.
Pa malo osaya kwambiri (≤1.5 m), ndodo za chidutswa chimodzi zimakhala zotsika mtengo komanso zachangu. Pa 1.5 mpaka 3.0 m, kufananiza kumakhala kofanana ndi malo enieni. Pa chilichonse chozama kuposa 3.0 m, kapangidwe ka gawo ndiye njira yokhayo yothandiza, ndipo kufananiza mtengo sikuli bwino.
Mapeto
Kusankha pakati pa ndodo zomangira ndi zomangira chimodzi sikuti ndi zomwe zili bwino m'chidule. Koma ndi zomwe zikugwirizana ndi nthaka yanu, kukana kwanu, komanso momwe malo anu amagwirira ntchito. Ndodo zomangira ndi chimodzi zimakhala zosavuta, zotsika mtengo, komanso zolimba pa mita imodzi iliyonse. Ndodo zomangira ndi njira yokhayo yothandiza ngati mukufuna kupita mozama kuposa mamita atatu, pamene mayendedwe anu akuchepetsa kutalika kwa ndodo, kapena pamene nthaka si yodziwika bwino ndipo mukufuna kuti kusinthasintha kuwonjezere kuya pang'onopang'ono.
Ubwino wa cholumikizira umatsimikizira ngati dongosolo la magawo likugwira ntchito monga momwe linapangidwira. Pambuyo pa zochitika 47 zolumikizirana mu 2021, tidasinthanso cholumikizira chathu chokhala ndi zolemba za ulusi wopindika ndipo tidachepetsa kuchuluka kwa kulephera ndi 70 peresenti. Uwu ndi mtundu wa kusintha komwe kunachitika zaka 17 zopanga ndi mayiko opitilira 60 omwe adapereka mayankho kumunda.
Ku Xinchang Shibang New Material Co., Ltd., timapangazida zogwirira ndodo za nthaka, zolumikizira za ulusi, ndodo zachitsulo zokutidwa ndi mkuwa, ndi mitundu yonse ya zida zotetezera nthaka ndi mphezi motsatira ISO 9001:2008. Lumikizanani nafe kuti mukambirane za zofunikira pa polojekiti yanu.
Uyu ndi Jane wochokera ku Xinchang Shibang New Material Co., Ltd yomwe ndi fakitale yaukadaulo yopanga zinthu za earthing ndi lighting system kwa zaka zoposa 17. Ndine manejala wogulitsa ndipo ndakhala ndi zaka 12 ndikugwira ntchito yoteteza mphezi ndi malonda akunja. Ndimagwira ntchito yothandizira makasitomala akunja ndikupeza zinthu zoteteza mphezi ndi grounding kuchokera ku China, zomwe zimagwira ntchito zonse kuphatikiza kuyang'anira bwino, kukonza zinthu ndi zikalata zonse zotumizira kunja. Ndingakuthandizeninso kugula zinthu zina zokhudzana ndi magetsi. Ndine katswiri, wodalirika komanso wosavuta kulankhulana naye, ndili wokonzeka kukupatsani mayankho ogulira nthawi imodzi.
Mafunso Ofunsidwa Kawirikawiri
Ndodo yopakira pansi yokhala ndi gawo limodzi ndi elekitirodi yopangidwa ndi zigawo zingapo za ndodo zolumikizidwa ndi zolumikizira za ulusi. Gwiritsani ntchito imodzi pamene kuya kwa malo omwe mukufuna kukhazikitsa kukupitirira 3.0 m, pamene zoletsa zoyendera zikulepheretsa kugwiritsa ntchito ndodo zazitali pamalopo, kapena pamene nthaka siikudziwika bwino ndipo mukufuna kusinthasintha kuti muwonjezere kuya pang'onopang'ono. Mu polojekiti yathu ya Abuja, Nigeria, ndodo zopakira zinafika pa 4.2 ohms pa kuya kwa 6 m mu nthaka ya laterite pomwe ndodo za 2.4 m imodzi zinali ndi 28 ohms.
Cholumikizira cha ndodo ya nthaka cholumikizidwa ndi ulusi (cholumikizira) ndi cholumikizira chachifupi cha mkuwa chokhala ndi ulusi wamkati mbali zonse ziwiri. Mumalumikiza gawo limodzi la ndodo kumapeto kulikonse ndikulimanga mpaka 50–80 Nm ndi wrench. Cholumikiziracho chimasamutsa mphamvu yoyendetsera kuchokera ku gawo lapamwamba kupita ku lapansi ndipo chimasunga kupitiliza kwamagetsi. Zolumikizira zathu zimagwiritsa ntchito ulusi wa metric (M16 x 2.0 pa ndodo za 5/8-inch, M20 x 2.5 pa ndodo za 3/4-inch) zokhala ndi zolembera zopindika kuti zisapitirire kupingasa—kusintha komwe kunachepetsa chiwopsezo chathu cha kulephera kwa ulusi ndi 70% titalemba zochitika 47 mu 2021.
Ndodo zokhala ndi mkuwa zimagwiritsa ntchito ma electroplating osalekeza omwe amapanga mgwirizano wa zitsulo pakati pa wosanjikiza wa mkuwa ndi pakati pa chitsulo. Ndodo zokhala ndi mkuwa zingagwiritse ntchito njira yolumikizirana yamakina. Pa kuyendetsa mozama, mgwirizano wa zitsulo umalimbana kwambiri ndi delamination ikagunda. Timayesa malo aliwonse opangira ndi mayeso opindika madigiri 180 (100 mm radius): mkuwa sayenera kusweka kapena delaminate. Talephera mayesowa kawiri pazaka zitatu, nthawi zonse ziwiri zikutsatiridwa ndi kuchepa kwa magetsi mu chingwe chathu cholumikizira magetsi.
Palibe malire a kuya kwaukadaulo malinga ngati nthaka ingalowe ndipo ma coupler joints akusunga umphumphu. Makasitomala athu afika mamita 12 mu tropical laterite (Democratic Republic of Congo) ndi mamita 9 mu mchenga wa m'chipululu (Saudi Arabia). Malire ofunikira nthawi zambiri amakhala amtundu wa nthaka—nthaka yamiyala ingafunike dzenje loyesera kapena njira ina yokhazikitsira nthaka monga ma electrode a mankhwala. Pa mapulojekiti ambiri, mamita 3 mpaka 6 ndi okwanira kuti nthaka isagwe.
50 mpaka 80 Nm pa ndodo za mainchesi 5/8 (14.2 mm); 60 mpaka 100 Nm pa ndodo za mainchesi 3/4 (17.2 mm). Nthawi zonse yeretsani ulusi musanawusonkhanitse ndikugwiritsa ntchito wrench ya torque yokhazikika ngati ilipo. Mu 2023, pulojekiti ya ku Dar es Salaam idataya magawo awiri pansi pa nthaka pamene okhazikitsa adamanga ma couplers opanda wrench - ma couplers adamasuka poyendetsa ndipo magawo adalekanitsidwa. Tsopano tikuphatikiza khadi lofotokozera torque m'bokosi lililonse la zida.
Inde, izi ndi zofala kwambiri. Yambani ndi ndodo imodzi pa 1.5 mpaka 2.4 m yoyamba, kenako onjezani magawo pogwiritsa ntchito cholumikizira ngati pakufunika kuya kokulirapo. M'mimba mwa ndodo ndi mawonekedwe a ulusi ziyenera kugwirizana ndi cholumikizira. Zolumikizira zathu zimagwirizana ndi ndodo zachitsulo za mainchesi 5/8 ndi mainchesi 3/4 zomwe zimagwiritsa ntchito njira yofanana ya ulusi, mosasamala kanthu za wopanga.
Zinthu zonse zimapangidwa motsatira ISO 9001:2008. Ndodo zathu zachitsulo zokhala ndi mkuwa zimakwaniritsa zofunikira za makulidwe a mkuwa a UL 467 (≥0.254 mm). Timapereka malipoti oyesa mphamvu yokoka, makulidwe a mkuwa, kuyera kwa mkuwa, ndi kukhulupirika kwa bond ngati tipempha. Pa mapulojekiti omwe akufuna ziphaso zinazake, timagwira ntchito ndi ma laboratories ovomerezeka kuti tipereke zikalata zofunika.
Lumikizanani ndi Jane Yang kuti mudziwe zambiri za malonda, zitsanzo, ndi mtengo wa polojekiti inayake. Zaka 17+ zaukadaulo wopanga, satifiketi ya ISO 9001:2008, kutumiza kunja kumayiko opitilira 60.
Nthawi yotumizira: Julayi-28-2026