Ndodo yachitsulo chosapanga dzimbiri vs. Bar vs. Shaft: Kodi kusiyana kwake ndi kotani?

Chiyambi

Ndodo yachitsulo chosapanga dzimbiri vs bala vs shaftNdi funso lofala kwambiri pogula chifukwa mawu awa nthawi zina amagwiritsidwa ntchito mosinthana, koma nthawi zina samatanthauza chinthu chomwecho. Kawirikawiri, ndodo yachitsulo chosapanga dzimbiri ndi chinthu chozungulira, chaching'ono cham'mimba mwake. Mzere wachitsulo chosapanga dzimbiri ndi gulu lalikulu lomwe lingakhale ndi mzere wozungulira, mzere wosalala, mzere wa sikweya ndi mzere wa hex. Mzere wachitsulo chosapanga dzimbiri nthawi zambiri ndi mzere wozungulira wopangidwa mwaluso kapena wozungulira wopangidwa mwaluso wopangidwira kuzungulira, kutumiza katundu, kulumikizana kapena kuthandizira ma bearing.

Kwa ogula, kusiyana kwakukulu si dzina lokha, komanso kugwiritsidwa ntchito komaliza. Ngati zinthuzo zidulidwa, kuwotcherera, kupindika kapena kupangidwa kukhala zigawo zonse, ndodo yachitsulo chosapanga dzimbiri kapena bala ikhoza kukhala yokwanira. Ngati zinthuzo ziyenera kuyenda mkati mwa mabearing, kuthandizira kuzungulira, kuwongolera kukhazikika kapena kukwaniritsa zofunikira pakuwongoka komanso pamwamba, ziyenera kutchulidwa ngati shaft yachitsulo chosapanga dzimbiri kapena shaft yolondola.

Malangizo abwino kwambiri ogwiritsira ntchito:

• Sankhani ndodo yachitsulo chosapanga dzimbiri ya zinthu zazing'ono zozungulira, mapini, kuwotcherera, kupanga ndi kukonza zinthu zopepuka.

• Sankhani zitsulo zosapanga dzimbiri ngati mukufuna zinthu zozungulira, zathyathyathya, za sikweya kapena za hexadecimal zogwirira ntchito yopangira, yomanga, zomangira, ma valve ndi zida zamafakitale.

• Sankhani shaft yachitsulo chosapanga dzimbiri ngati pakufunika kuwongoka, kuzungulira, kutha kwa pamwamba, kukwanira kwa bearing, kuzungulira kapena kutumiza katundu.

• Sankhani 304 kuti mupewe dzimbiri, 316L kuti mupewe chloride kapena kukhudzana ndi madzi a m'nyanja, 410/420/431 kuti mupewe mphamvu ndi kuuma kwambiri, ndi 17-4PH kuti mupewe zida zolondola kwambiri.

• Nthawi zonse tchulani kalasi, muyezo, m'mimba mwake, kulekerera, kutalika, kumalizidwa kwa pamwamba, kuwongoka, kutentha ndi zofunikira za satifiketi musanayitanitse.

Kuyerekeza Mbali ndi Mbali: Ndodo vs Bar vs Shaft

Chinthu Ndodo Yopanda Chitsulo Chosapanga Chitsulo Chosapanga Dzimbiri Shaft ya Chitsulo Chosapanga Dzimbiri
Tanthauzo Loyamba Chogulitsa chozungulira, nthawi zambiri chimakhala chocheperako Zogulitsa zazitali zambiri kuphatikiza mawonekedwe ozungulira, athyathyathya, a sikweya ndi a hex Mzere wozungulira wokonzedwa kuti ugwiritsidwe ntchito ndi shaft yamakina
Mawonekedwe Ofanana Chozungulira Ma profiles ozungulira, athyathyathya, a sikweya, a hex ndi apadera Zozungulira, zolunjika bwino kapena zopingasa
Cholinga Chachikulu Chogulira M'mimba mwake, kalasi, kutalika ndi pamwamba poyambira Mawonekedwe, kukula, muyezo, gawo lothandizira makina ndi katundu wa makina Kulekerera kwa m'mimba mwake, kuwongoka, kuzungulira, kuuma kwa pamwamba ndi kuuma
Malo Odziwika Zakuda, zokhuthala, zowala kapena zopukutidwa Wakuda, wosenda, wopindika, wowala, wopukutidwa kapena wophwanyika Yopindidwa, yophwanyika, yopukutidwa kapena yolondola
Kagwiritsidwe Ntchito Kawirikawiri Mapini, zida zojambulira waya, kuwotcherera, kupanga ndi zida zowunikira Zipangizo zomangira, zomangira, ma valve, zolumikizira, zothandizira ndi zomangamanga zopangidwa ndi makina Ma shaft a pampu, ma shaft a mota, ma shaft operekera ma bearing, ma shaft oyendetsera ndi ndodo zotsogolera
Malangizo a Mtengo Kawirikawiri zimakhala zochepa ngati kulekerera koyenera kuli kovomerezeka Zimadalira mawonekedwe, kukula ndi momwe pamwamba pake palili Kawirikawiri zimakhala zapamwamba chifukwa cha kukonza ndi kuyang'anira molondola

Kodi Ndodo Yosapanga Chitsulo Chosapanga Chitsulo N'chiyani?

Ndodo yachitsulo chosapanga dzimbiri nthawi zambiri imatanthauza chinthu chozungulira cholimba chachitali. M'misika yambiri, mawu oti "ndodo" amagwiritsidwa ntchito ponena za kukula kozungulira kochepa kapena zinthu zomwe zimaperekedwa kuti zigwiritsidwe ntchito mobwerezabwereza, kupangira zinthu zopepuka, mapini, zothandizira, kuwotcherera, kupanga kapena kupanga. Komabe, palibe lamulo lapadziko lonse lapansi lomwe limasiyanitsa ndodo ndi mtanda wozungulira ndi mainchesi okha, kotero ogula nthawi zonse ayenera kupereka kukula kwenikweni ndi kulekerera.

Ndodo zosapanga dzimbiri nthawi zambiri zimaperekedwa mu 304, 316, 316L, 410, 420, 430, 17-4PH ndi zina. Zitha kukhala zotenthedwa, zokokedwa ozizira, zowala bwino, zopukutidwa kapena zodulidwa kutalika kutengera momwe zagwiritsidwira ntchito.

Kugwiritsa Ntchito Bwino Kwambiri Ndodo Yosapanga Chitsulo

• Zigawo zazing'ono zopangidwa ndi makina ndi mapini.

• Kupanga, zothandizira ndi mabulaketi.

• Kulukira ndi kupanga zinthu.

• Ndodo ndi mafelemu okongoletsera.

• Zigawo zonse za mafakitale zomwe sizikufunika kupirira shaft yolimba.

Kodi Chitsulo Chosapanga Dzimbiri Chotani?

Chitsulo chosapanga dzimbiri ndi gulu lalikulu la zinthu. Chimaphatikizapo chitsulo chozungulira, chitsulo chosalala, chitsulo cha sikweya, chitsulo cha hex, chitsulo cha ngodya ndi chitsulo cha mbiri yapadera. Chitsulo chozungulira ndi njira yodziwika kwambiri yogwiritsira ntchito popanga makina, zomangira, ma valve, ma flange, zolumikizira, ma shaft ndi zida zina zamakanika.

Mipiringidzo imatha kuperekedwa yotenthedwa, yopangidwa, yosenda, yozunguliridwa, yokokedwa ozizira, yophwanyidwa kapena yopukutidwa. Pa ntchito zomangira, ogula ayenera kusamala ndi kupirira kwa dayamita, kulunjika, zolakwika pamwamba, kulimba kwa mkati, kuuma ndi chithandizo cha kutentha.

Mitundu Yodziwika Yopanda Zitsulo Zosapanga Zitsulo

Mtundu wa Bala Kagwiritsidwe Ntchito Kawirikawiri Cheke cha Wogula
Mpiringidzo Wozungulira Zigawo zopangidwa ndi makina, shafts, mabolts, zigawo za ma valve ndi zolumikizira M'mimba mwake, kulolerana, pamwamba, kulunjika ndi muyezo.
Bala Lathyathyathya Mabulaketi, mafelemu, zothandizira, masamba ndi ziwalo zomangira M'lifupi, makulidwe, m'mphepete mwake komanso kusalala.
Malo Oimikapo Mbali Mabuloko, makiyi, mafelemu ndi zida zamafakitale zopangidwa ndi makina Kukula kwa mbali, utali wa ngodya, kulunjika ndi pamwamba.
Hex Bar Mtedza, zomangira, zolumikizira ndi zida zokonzedwa bwino Kukula konse, kulolerana ndi makina.

Kodi Shaft ya Chitsulo Chosapanga Dzimbiri N'chiyani?

Shaft yachitsulo chosapanga dzimbiri nthawi zambiri imakhala yozungulira yomwe yasankhidwa kapena kukonzedwa kuti igwiritsidwe ntchito pa shaft yamakina. Ikhoza kuzunguliridwa, kuphwanyidwa, kupukutidwa, kuwongoledwa, kutenthedwa kapena nthaka yopanda pakati kuti ikwaniritse zofunikira pa bearing, kuzungulira, kutsetsereka kapena kulinganizidwa.

Mosiyana ndi mzere wozungulira wamba, mzere wozungulira nthawi zambiri umafuna kupirira kwa dayamita yolimba, kuwongoka bwino, kukhwima kwa pamwamba kolamulidwa, kuzungulira kwakukulu, kuuma kapena kutentha kwapadera. Pa ma shaft opompa, ma shaft a mota, ndodo zotsogolera ndi ma bearing shaft, kufotokozera kwa mzerewo kuyenera kukhala kwatsatanetsatane kwambiri kuposa dongosolo la mzere wozungulira wamba.

Kugwiritsa Ntchito Bwino Kwambiri Chitsulo Chosapanga Dzimbiri

• Ma shaft a pampu ndi ma valvu.

• Ma shaft a mota ndi ma shaft oyendetsera.

• Ndodo zowongolera zolunjika ndi mipata yoperekera ma bearing.

• Mipando ya m'madzi ndi zigawo za mipando ya propeller.

• Makina ophikira chakudya, makina opangira nsalu, zida zachipatala ndi makina odzipangira okha.

Kuyerekeza kwa dzimbiri, Mphamvu ndi Mtengo

Mawu akuti ndodo, bala ndi shaft amafotokoza mtundu wa chinthu kapena kagwiritsidwe ntchito kake, osati kukana dzimbiri kokha. Kukana dzimbiri kumadalira kwambiri mtundu wa chitsulo chosapanga dzimbiri, kumalizidwa kwa pamwamba, malo ndi kukonza. Mphamvu zimadalira mtundu, kutentha, kuzizira komanso mphamvu zofunika zamakina.

Giredi Malangizo a dzimbiri Mphamvu / Kuuma Malangizo Malangizo a Mtengo Kugwiritsa Ntchito Kawirikawiri
304 Zabwino kwambiri pa ntchito zamkati komanso zamafakitale Wocheperako Chochepera kuposa 316L Ndodo zambiri, mipiringidzo, mipata, zida zophikira chakudya ndi zopangira.
316 / 316L Kuposa 304 mu ma chloride ndi mlengalenga wa m'nyanja Wocheperako Zoposa 304 Ndodo za m'madzi, zitsulo zoyezera mankhwala, mipiringidzo yopopera ndi makina ophikira chakudya.
410/420 Zochepera 304 ndi 316L Zingaumitsidwe Kawirikawiri zimakhala zotsika mtengo pa magiredi olimba Zipangizo zovalidwa, mivi, zida, zida za ma valavu ndi zida zamakina.
431 Zabwino kuposa magiredi ambiri a martensitic Mphamvu yayikulu pambuyo pa chithandizo cha kutentha Nthawi zambiri, kuposa 410/420 Mipando yamphamvu kwambiri, zida za ndege, mipando ya m'madzi ndi zomangira.
17-4PH Zabwino m'malo ambiri amafakitale Kuuma kwamphamvu pambuyo pa mvula Magiredi apamwamba kuposa a 300-series wamba Mipando yolondola, zida zoyendera ndege, ndodo zolimba kwambiri ndi zida zopangidwa ndi makina.

Zinthu Zabwino Kwambiri Pogwiritsa Ntchito

Kugwiritsa ntchito Chogulitsa Chovomerezeka Malangizo Ovomerezeka a Giredi Chifukwa
Kupanga Zonse Ndodo kapena bala 304 Kupezeka bwino, kukana dzimbiri komanso ndalama zomwe zimagwiritsidwa ntchito.
Mpampu wa Pampu ya M'madzi Shaft yolondola 316L, 431 kapena duplex mutawunikanso Imafunika kukana dzimbiri, mphamvu komanso kulunjika bwino.
Shaft ya Makina Opangira Chakudya Mzere wapansi 304 kapena 316L Kuyera bwino komanso kukana dzimbiri ndikofunikira.
Zomangira ndi Mtedza Mzere wozungulira kapena mzere wa hex 304, 316, 410 kapena 17-4PH Kuchuluka kumadalira dzimbiri, mphamvu ndi kufunikira kwa makina.
Ndodo Yotsogolera Yonyamula Shaft yolondola kwambiri 304, 316L, 420 kapena 17-4PH Kumapeto kwa pamwamba, kuzungulira ndi kuuma kwake kungalamulire magwiridwe antchito.
Tsinde la Valavu Shaft kapena bala lozungulira 316L, 410, 431 kapena 17-4PH Imafunika mphamvu, kukana kuwonongeka komanso kukana dzimbiri.

Miyezo Yofanana ndi Zofunikira za Satifiketi

Ndodo yosapanga dzimbiri, mipiringidzo ndi zitsulo zitha kuyitanidwa motsatira ASTM, ASME, EN, JIS, GB kapena zomwe makasitomala akufuna. Muyezo woyenera umadalira mtundu wa chinthucho, mtundu wake, kufunikira kwa ntchito yokakamiza komanso kugwiritsidwa ntchito komaliza.

Chofunikira Zimene Zimatsimikizira
ASTM A276 Mipiringidzo ndi mawonekedwe achitsulo chosapanga dzimbiri wamba kuti agwiritsidwe ntchito nthawi zonse.
ASTM A479 / ASME SA479 Mipiringidzo yogwiritsira ntchito boiler ndi zotengera zopanikizika ngati kuli kofunikira.
Mndandanda wa EN 10088 Chitsulo chosapanga dzimbiri cha ku Ulaya ndi zofunikira zake.
EN 10204 3.1 MTC Chiwerengero cha kutentha, kapangidwe ka mankhwala, mawonekedwe a makina, muyezo ndi kutsata.
Lipoti la PMI Kuzindikira zinthu zabwino komanso kupewa kusakaniza kwa magiredi.
Lipoti Loyerekeza M'mimba mwake, m'lifupi, makulidwe, kutalika, kulolerana, kulunjika ndi momwe pamwamba pake palili.
Kuyang'anira UT kapena Surface Kulimba kwamkati kapena khalidwe la pamwamba pa shafts zofunika kwambiri ndi mipiringidzo yayikulu.

Momwe Mungatchulire Ndodo, Mpiringidzo kapena Shaft Yosapanga Chitsulo

RFQ yomveka bwino iyenera kufotokoza zomwe zimafunika pa chinthucho m'malo mongodalira mawu oti ndodo, bala kapena shaft.

✅ Dzina la chinthu: ndodo yachitsulo chosapanga dzimbiri, bala lozungulira, bala lathyathyathya, bala la hex, bala lalikulu kapena shaft yolondola.

✅ Giredi: 304, 316L, 410, 420, 431, 17-4PH kapena zinthu zina zofunika.

✅ Muyezo: ASTM A276, ASTM A479, EN 10088 kapena tsatanetsatane wa kasitomala.

✅ Kukula: m'mimba mwake, m'lifupi, makulidwe, kukula kopingasa, kutalika ndi kuchuluka.

✅ Kulekerera: kulekerera kwachizolowezi, h9, h8, h7 kapena kulekerera kwa kasitomala komwe kukufunika.

✅ Pamwamba: wakuda, wothira, wowala, wosenda, wozunguliridwa, wosenda, wopukutidwa kapena womalizidwa ndi galasi.

✅ Zofunikira pa shaft: kuongoka, kuzungulira, kukhwima, kuuma, chamfer, keyway kapena bowo lapakati.

✅ Chithandizo cha kutentha: chophimbidwa, chophimbidwa, chozimitsidwa ndi chotenthetsera, H900, H1025 kapena chokonzedwa mwamakonda.

✅ Kuyesa: mankhwala, kukoka, kuuma, PMI, UT, kuyang'anira miyeso kapena kuyang'anira pamwamba.

✅ Satifiketi: EN 10204 3.1, 3.2 kapena kuyang'aniridwa ndi munthu wina ngati pakufunika.

Zolakwa Zofala kwa Ogula

Kuyitanitsa "shaft" koma kungotchula kukula ndi kutalika:Dongosolo lenileni la shaft liyenera kuphatikizapo kulolerana, kuwongoka, kukhwima kwa pamwamba, kuuma ndi zofunikira pakupanga.

Kugwiritsa ntchito ndodo, bala ndi shaft ngati mawu ofanana:Zingatanthauze milingo yosiyanasiyana yogwirira ntchito, kulekerera, ndi zofunikira zowunikira.

Kusankha 304 pa malo aliwonse:316L ingafunike kuti ikhudze chloride kapena madzi a m'nyanja, pomwe 410, 431 kapena 17-4PH ingafunike kuti ikhale yolimba komanso yolimba.

Kuyerekeza mtengo wopanda mawonekedwe a pamwamba:Mzere wakuda, mzere wodulidwa, mzere wowala ndi shaft yophwanyika zimakhala ndi ndalama zosiyana zopangira komanso zolipirira makina.

Kuiwala kulunjika:Chitsulo chozungulira chachizolowezi sichingakhale choyenera kukhala chozungulira kapena ndodo yotsogolera.

Kunyalanyaza kuuma ndi kutentha:Kugwira ntchito kwa shaft kungadalire momwe zinthu zilili bwino pokonza kutentha, makamaka pa martensitic ndi precipitation-hardening grades.

Osapempha PMI kapena MTC:Magiredi osapanga dzimbiri angawoneke ofanana, kotero satifiketi ndi kuzindikira zinthu zabwino ndizofunikira pa ntchito zoyang'aniridwa.

FAQ

Kodi kusiyana pakati pa ndodo yachitsulo chosapanga dzimbiri ndi bala ndi kotani?

Ndodo yachitsulo chosapanga dzimbiri nthawi zambiri imatanthauza chinthu chozungulira chotalika, nthawi zambiri chocheperako. Ndodo yachitsulo chosapanga dzimbiri ndi gulu lalikulu lomwe limaphatikizapo ndodo yozungulira, ndodo yathyathyathya, ndodo ya sikweya ndi ndodo ya hex. M'misika yambiri, ndodo yozungulira ndi ndodo yozungulira zimatha kufanana, kotero kukula kwenikweni, muyezo ndi kulekerera kuyenera kufotokozedwa.

Kodi kusiyana pakati pa bala lachitsulo chosapanga dzimbiri ndi shaft ndi kotani?

Chitsulo chosapanga dzimbiri ndi chosaphika kapena chosatha chogwiritsidwa ntchito popanga ndi kupanga. Chitsulo chosapanga dzimbiri nthawi zambiri chimakhala chozungulira chomwe chimakonzedwa kuti chigwiritsidwe ntchito ndi makina okhala ndi kulunjika kolimba, kutsirizika pamwamba, kulekerera kukula kwake komanso nthawi zina kutentha.

Kodi chitsulo chosapanga dzimbiri chozungulira chingagwiritsidwe ntchito ngati shaft?

Inde, koma pokhapokha ngati ikukwaniritsa kulekerera kwa shaft, kulunjika, kukhwima kwa pamwamba, kuuma ndi mphamvu zamakina. Mzere wozungulira wokhazikika wozungulira wotentha ungafunike kuzunguliridwa, kupukutidwa, kupukutidwa kapena kutenthedwa musanagwiritse ntchito shaft.

Ndi mtundu uti wa chitsulo chosapanga dzimbiri womwe ndi wabwino kwambiri pa shafts?

304 ndi 316L ndi oyenera kugwiritsa ntchito ma shaft osapsa ndi dzimbiri komanso makina ophikira chakudya. 410, 420 ndi 431 amagwiritsidwa ntchito pamene pakufunika kuuma kapena mphamvu zambiri. 17-4PH imasankhidwa kuti ikhale ndi ma shaft olimba kwambiri komanso zida zamakina zovuta.

Kodi shaft yachitsulo chosapanga dzimbiri ndi yokwera mtengo kuposa bala lozungulira?

Kawirikawiri inde. Mzere nthawi zambiri umafuna kukonzedwa mowonjezera monga kupukuta, kutembenuza, kupukuta, kuwongola, kutentha ndi kuyang'aniridwa. Njirazi zimawonjezera mtengo poyerekeza ndi mzere wozungulira wamba.

Kodi ndi mawonekedwe otani omwe ali abwino kwambiri pa zitsulo zosapanga dzimbiri?

Pa ntchito zoyendera, zotsetsereka kapena zozungulira, malo otsetsereka kapena opukutidwa nthawi zambiri amakondedwa. Kukhwima kofunikira kuyenera kufotokozedwa ngati mtengo wa Ra kapena malinga ndi chithunzicho.

Ndi zikalata ziti zomwe ziyenera kuperekedwa ndi ndodo yachitsulo chosapanga dzimbiri, bala kapena shaft?

Zikalata wamba zimaphatikizapo EN 10204 3.1 MTC, kapangidwe ka mankhwala, mawonekedwe a makina, nambala ya kutentha, muyezo wa chinthu ndi lipoti la miyeso. PMI, mayeso olimba, UT, kuyang'anira pamwamba kapena kuyang'ana kwa chipani chachitatu kungafunike pa shafts zofunika kwambiri ndi ziwalo zokhudzana ndi kupanikizika.

Zogulitsa Zosapanga Zitsulo Zofanana

Zofanana Kugwiritsa Ntchito Zogula
Chitsulo Chozungulira Chosapanga Zitsulo Chogwirira chozungulira cha makina opangira zinthu, ma shaft, ma pini, zomangira, ma valve, zolumikizira ndi zida zonse zamafakitale.
304 Chitsulo Chosapanga Dzimbiri Chozungulira Chozungulira cholimba chomwe sichingagwe ndi dzimbiri chomwe chimagwiritsidwa ntchito popanga, kukonza makina ndi zida zophikira chakudya.
316L Chitsulo Chosapanga Dzira Chozungulira Chozungulira cha zinthu za m'madzi, mankhwala, kukonza chakudya ndi zinthu zomwe zili ndi chloride.
410 Chitsulo Chosapanga Dzimbiri Chozungulira Cholimba cha martensitic chosapanga dzimbiri cha shafts, ma valve parts, ma fasteners ndi ma mechanical components.
Chitsulo Chosapanga Dzimbiri Chozungulira cha 17-4PH Chitsulo chosapanga dzimbiri cholimba kwambiri chomwe chimathandiza kuti zipini zake zikhale zolondola komanso zogwiritsidwa ntchito ndi makina.
Chitsulo Chosapanga Dzimbiri Chopanda Lathyathyathya Chitsulo chosalala cha mafelemu, mabulaketi, zothandizira, zida zamakina ndi kapangidwe ka nyumba.

Mapeto

Ndodo yachitsulo chosapanga dzimbiri, bala ndi shaft ndi zinthu zogwirizana kwambiri, koma zimagwirira ntchito zosiyanasiyana zogulira. Ndodo nthawi zambiri imatanthauza katundu wozungulira, bala ndi gulu lalikulu lomwe limaphimba mawonekedwe osiyanasiyana, ndipo shaft imatanthauza zinthu zozungulira zomwe zimagwiritsidwa ntchito pozungulira, kulumikiza kapena kuthandizira ma bearing.

Kuti ogula agule zinthu modalirika, sayenera kungodalira dzina la chinthucho. RFQ iyenera kufotokoza mtundu, muyezo, kukula, kulekerera, pamwamba, kulunjika, kuuma, kutentha, kuyesa ndi zofunikira pa satifiketi. Izi zimatsimikizira kuti chitsulo chosapanga dzimbiri chomwe chaperekedwacho chili choyenera kupanga, kukonza kapena kukonza shaft.

Pemphani Ndodo, Mzere kapena Shaft Yosapanga Chitsulo Chosapanga Chitsulo

SAKY STEEL imapereka ndodo yachitsulo chosapanga dzimbiri, bala lozungulira, bala lathyathyathya, bala lalikulu, bala la hex ndi zida zolondola za shaft mu 304, 316L, 410, 420, 431, 17-4PH ndi zina zachitsulo chosapanga dzimbiri.

Tumizani giredi, muyezo, mawonekedwe a chinthu, kukula, kulolerana, kumalizidwa kwa pamwamba, kufunikira kwa shaft, kuchuluka, kuyesa, mtundu wa satifiketi ndi doko lopitako kuti liwunikidwenso mwaukadaulo ndi kutchulidwa.


Nthawi yotumizira: Julayi-09-2026