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Dacromet kunja sikisi
Dacromet galvanized Grade 8.8 ndi 10.9 high - tensile B7 hex head bolts ndi mtedza makamaka zimagwiritsa ntchito chitsulo champhamvu cha alloy ngati maziko.
Kufotokozera
chikhomo
Zogulitsa
Dacromet galvanized Grade 8.8 ndi 10.9 high - tensile B7 hex head bolts ndi mtedza makamaka amagwiritsa ntchito chitsulo champhamvu cha alloy ngati maziko. Matchulidwe a B7 akuwonetsa kuti zinthuzo zimakwaniritsa miyezo ya ASTM A193, yomwe imadziwika kwambiri chifukwa cha makina awo komanso zofunikira zamakina pamakina opanikizika kwambiri.
Kwa ma bolt ndi mtedza wa Giredi 8.8, chitsulo cha alloy chimakhala ndi zinthu monga kaboni, manganese, ndi silicon. Pambuyo pa chithandizo choyenera cha kutentha, zigawozi zimagwirira ntchito limodzi kuti zikwaniritse mphamvu zochepa za 800 MPa ndi mphamvu zokolola za 640 MPa. Izi zimawapangitsa kukhala oyenera ntchito zanthawi zonse - mpaka zapakatikati - zolemetsa - zomwe zimafunikira kumangiriza odalirika pansi pazolemetsa zazikulu.
Komano, mitundu ya giredi 10.9 yapamwamba kwambiri, imapangidwa kuchokera ku chitsulo cha alloy chokhala ndi mphamvu zowongolera bwino pamapangidwe amankhwala komanso njira yochiritsira yotentha kwambiri. Amatha kukhala ndi mphamvu zocheperako za 1000 MPa ndi mphamvu zokolola za 900 MPa, zomwe zimawathandiza kuti athe kupirira katundu wokwera kwambiri, kugwedezeka, komanso kupsinjika kwamakina. Gulu lamphamvu lamphamvuli nthawi zambiri limagwiritsidwa ntchito polumikizana ndi makonzedwe ovuta pomwe kulephera sikungatheke.
Chodziwika bwino cha mankhwalawa ndi Dacromet galvanization. Kupaka kwa Dacromet ndi mankhwala oletsa dzimbiri omwe amapangidwa makamaka ndi zinc flakes, aluminium flakes, chromates, ndi organic binders. Akagwiritsidwa ntchito pamwamba pazitsulo zazitsulo za alloy ndi mtedza, zimapanga filimu yowonjezereka, yofanana, komanso yotsatizana yomwe imapereka kukana kwa dzimbiri kwapamwamba poyerekeza ndi njira zachikhalidwe zopangira malata.
Zitsanzo Zamalonda
Mzere wazogulitsa wa Dacromet galvanized Grade 8.8 ndi 10.9 high - tensile B7 hex head bolts ndi mtedza umaphatikizapo mitundu yosiyanasiyana yogawidwa ndi kukula, kutalika, ndi zofunikira zenizeni zogwiritsira ntchito:
Ma Standard Metric ndi Imperial Models: Imapezeka mumitundu yambiri yama metric ndi ma imperial. Mu dongosolo la metric, ma diameter a bawuti nthawi zambiri amachokera ku M6 mpaka M36, pomwe mu ufumu wachifumu, amaphimba 1/4 "mpaka 1 - 1/2". Kutalika kwa mabawuti kumatha kusiyana ndi 20mm (kapena 3/4 ") mpaka 300mm (kapena 12") kapena kupitilira apo, kutengera zosowa zenizeni zama projekiti osiyanasiyana. Mitundu yodziwika bwino imatsata miyezo yapadziko lonse lapansi komanso yadziko lonse yama bolts ndi mtedza wa hex, kuwonetsetsa kuti ikugwirizana ndi ma wrenches, soketi, ndi zida zina zomangira.
High - Katundu - Mphamvu Zapadera Zitsanzo: Kwa ntchito zolemetsa zamakampani, ma projekiti akuluakulu omanga, ndi kukhazikitsa kofunikira, zitsanzo zapadera zamphamvu zimaperekedwa. Ma bolts ndi mtedza nthawi zambiri amakhala ndi mainchesi akulu ndi mitu yayikulu ya hex kuti athe kuthana ndi mphamvu zolimba komanso zometa ubweya. Amapangidwa makamaka kuti agwiritsidwe ntchito ngati makina olemera, kumanga mlatho, ndi zomanga zokwera kwambiri, komwe kutha kupirira zolemetsa zambiri ndikofunikira.
Kuwonongeka - Mitundu Yosasinthika Yowonjezera: Kupatula kuphatikizika kwamphamvu kwa Dacromet, mitundu ina imatha kuthandizidwa ndi mankhwala oletsa dzimbiri kapena kugwiritsa ntchito zida zapamwamba za zokutira za Dacromet. Mitundu yokhazikika yolimbana ndi dzimbiriyi imapangidwa kuti ikhale malo ovuta kwambiri, monga nsanja zakunyanja, malo opangira mankhwala, komanso malo okhala ndi mpweya wambiri komanso chinyezi. Atha kupereka chitetezo chotalikirapo ku dzimbiri lalikulu, kuwonetsetsa kudalirika kwanthawi yayitali kwa dongosolo lomanga.
Njira Yopangira
Kupanga kwa Dacromet galvanized Grade 8.8 ndi 10.9 high - tensile B7 hex head bolts ndi mtedza kumaphatikizapo njira zingapo zolondola komanso njira zowongolera - zowongolera:
Kukonzekera Zinthu Zakuthupi: Zida zamtengo wapatali za alloy zitsulo zimasungidwa mosamala kuti zikwaniritse zofunikira za ASTM A193 B7 ndi kalasi yamphamvu yeniyeni (Giredi 8.8 kapena 10.9). Kuyang'ana mozama kumachitika pamakina opangidwa ndi mankhwala, zida zamakina, komanso mawonekedwe apamwamba achitsulo. Mipiringidzo kapena ndodozo zimadulidwa mu utali woyenerera malinga ndi kukula kwake kwa mabawuti ndi mtedza.
Kupanga: Chitsulo cha alloy chimapangidwa kukhala mutu wa hex ndi shank (wa ma bolt) kapena mawonekedwe a hex nati kudzera kuzizira - mutu kapena kutentha - kupanga njira. Cold - mutu umagwiritsidwa ntchito popanga ma bawuti ang'onoang'ono ndi mtedza, womwe umagwira bwino ntchito popanga zambiri ndipo umatha kupanga mawonekedwe ake molondola ndikusunga zolondola. Hot - forging umagwiritsidwa ntchito zazikulu - m'mimba mwake kapena mkulu - mphamvu mabawuti ndi mtedza, kumene zitsulo ndi usavutike mtima kuti malleable boma ndiyeno zoumbidwa pansi pa kupsyinjika kwambiri kukwaniritsa chofunika mphamvu ndi miyeso yeniyeni.
Ulusi: Pambuyo kupanga, ma bolts amapita ku ntchito yolumikizira. Kugudubuza ulusi ndiyo njira yomwe imakonda chifukwa imapanga ulusi wolimba kwambiri ndi kuzizira - kugwira ntchito yachitsulo, kumapangitsa kuti ma bolt asatope. Ulusi wa ulusi wapadera umagwiritsidwa ntchito kuwonetsetsa kuti ulusi, mbiri yake, ndi kukula kwake zikukwaniritsa zofunikira, kutsimikizira kufanana koyenera ndi mtedza. Kwa mtedza, ulusi wamkati umadulidwa mosamala kapena kupangidwa kuti zitsimikizire kuti zimagwirizana bwino ndi mabawuti ogwirizana.
Kutentha Chithandizo: Kuti mukwaniritse zofunikira za Grade 8.8 kapena 10.9 zamakina, ma bolts opangidwa ndi mtedza amatsatiridwa ndi njira zingapo zochitira kutentha. Izi nthawi zambiri zimaphatikizapo kufewetsa chitsulo ndikuchotsa kupsinjika kwamkati, kuzimitsa kukulitsa kuuma ndi mphamvu, komanso kutenthetsa kuti musinthe kuuma ndi kulimba kuti mufike mulingo woyenera. Kutentha - njira yochizira imayendetsedwa bwino kuti zitsimikizire kuti mabawuti ndi mtedza zimakwaniritsa mphamvu zolimba komanso zofunikira pamakalasi awo.
Dacromet Coating Application: Choyamba, ma bolts ndi mtedza amatsukidwa bwino kuti achotse zodetsa zilizonse, mafuta, kapena sikelo pamwamba. Kenako, amamizidwa mumtsuko wa Dacromet kapena wokutidwa ndi kupopera mbewu mankhwalawa, omwe amagawira mofanana yankho lomwe lili ndi zinc flakes, ma aluminium flakes, ma chromates, ndi zomangira pamalo awo. Pambuyo pakuphimba, zigawozo zimachiritsidwa pa kutentha kwakukulu (nthawi zambiri pafupifupi 300 ° C). Panthawi yochiritsa, zigawo za yankho la Dacromet zimachita kupanga zokutira wandiweyani, zowonongeka - zosagwirizana ndi zomatira ku gawo lapansi lachitsulo cha alloy.
Assembly ndi Quality Inspection: Maboti amaphatikizidwa ndi mtedza wofanana. Gulu lililonse lazinthu limayang'aniridwa mosamalitsa. Macheke amtundu amachitidwa kuti awonetsetse kuti m'mimba mwake, kutalika, mawonekedwe a ulusi, ndi kukula kwa mutu wa bolts ndi mtedza kumakwaniritsa miyezo. Kuyesa kwamakina, monga kulimba kwamphamvu, kuchuluka kwa umboni, ndi kuyezetsa kwa torque - kumayesedwa kuti zitsimikizire katundu - kunyamula mphamvu ndi magwiridwe antchito a bolt - awiriawiri a nati. Kuyang'anira kowoneka kumachitidwanso kuti awone zolakwika zapamtunda, kuphimba koyenera kwa Dacromet, komanso kusatsata zofunikira za mawonekedwe. Zogulitsa zokha zomwe zimapambana mayeso onse apamwamba ndizovomerezeka kuti zisungidwe ndi kutumiza.
Njira Yochizira Pamwamba
Chithandizo cha Dacromet galvanization ndi chinthu chofunikira kwambiri pakuchita bwino kwa mabawuti ndi mtedza:
Pre - chithandizo: Pamaso pa zokutira za Dacromet, ma bolts ndi mtedza zimakonzedweratu kuti zitsimikizidwe kuti zokutira bwino kumamatira. Izi zisanachitike - mankhwala amayamba ndi degreasing, kumene zigawo zake zimatsukidwa ndi zosungunulira kapena zamchere zothetsera kuchotsa mafuta, mafuta, ndi zina zowononga organic. Kenako, pickling ikuchitika pogwiritsa ntchito njira ya asidi kuchotsa dzimbiri, sikelo, ndi zonyansa zopanda organic kuchokera pamwamba. Pambuyo pa pickling, ma bolts ndi mtedza amatsukidwa bwino kuti athetse asidi otsalira, ndipo pamapeto pake, amawuma kukonzekera zokutira za Dacromet.
Njira Yopangira Dacromet: Pali njira ziwiri zogwiritsira ntchito zokutira Dacromet: kumizidwa ndi kupopera mbewu mankhwalawa. Mu njira yomiza, ma bolts okonzedweratu ndi mtedza amamizidwa kwathunthu mu njira ya Dacromet, zomwe zimalola kuti yankholo litseke mokwanira pamwamba. Mu njira yopopera mbewu mankhwalawa, yankho la Dacromet limapopera mbewu mankhwalawa mofananamo pamwamba pogwiritsa ntchito zida zopopera. Pambuyo kupaka, zigawozi zimayikidwa mu uvuni kuti zichiritsidwe. Panthawi yochiritsa, madzi a mu Dacromet solution amasanduka nthunzi, ndipo zinc flakes, aluminium flakes, chromates, ndi zomangira zimachita zinthu ndi mankhwala kuti apange zokutira mosalekeza, wandiweyani komanso wokhazikika wokhala ndi makulidwe pafupifupi 5 - 15 microns.
Post - chithandizo: Nthawi zina, positi - mankhwala akhoza kuchitidwa pambuyo ❖ kuyanika Dacromet. Izi zingaphatikizepo chithandizo cha passivation ndi mankhwala apadera kuti apititse patsogolo kukana kwa dzimbiri kwa zokutira, kapena kugwiritsa ntchito topcoat kuti apititse patsogolo kukana kwa abrasion ndi maonekedwe a pamwamba. Chithandizo cha Post - chimathandizira kukhathamiritsa magwiridwe antchito a Dacromet - ma bolts ndi mtedza ndikuzisintha kuti zigwirizane ndi zofunikira zosiyanasiyana.
Kuchuluka kwa Ntchito
Dacromet galvanized Grade 8.8 ndi 10.9 high - tensile B7 hex head bolts ndi mtedza amagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana ofunikira ndi zomangamanga:
Kumanga ndi Kumanga: M'ntchito zomanga zazikulu, makamaka nyumba zokwera kwambiri, milatho, ndi zomera zamakampani, magulu awiriwa amagwiritsidwa ntchito polumikiza zitsulo, mizati, ndi ma trusses. Mphamvu zawo zapamwamba zimatsimikizira kukhazikika ndi katundu - kunyamula mphamvu ya nyumba yomanga, pamene Dacromet galvanization imapereka chitetezo cha nthawi yaitali ku dzimbiri, ngakhale m'madera akunja omwe amawonekera mumlengalenga, mvula, ndi nyengo zina.
Makina Olemera ndi Kupanga Zida: Popanga makina olemera, monga zida zomangira, makina opangira migodi, ndi makina aulimi, ma bolts okwera kwambiri ndi mtedza ndizofunikira pakuphatikiza zinthu zofunika kwambiri. Amatha kupirira katundu wolemetsa, kugwedezeka, ndi kugwedezeka komwe kumachitika panthawi yogwiritsira ntchito makina. Kukaniza bwino kwa dzimbiri kwa zokutira kwa Dacromet kumatetezanso ma bolts ndi mtedza ku zovuta zogwirira ntchito, monga kukhudzana ndi dothi, chinyezi, ndi mankhwala.
Magalimoto ndi Aerospace Industries: M'makampani amagalimoto, ma giredi 8.8 ndi 10.9 apamwamba - ma bolts ndi mtedza amagwiritsidwa ntchito pomanga injini, kupanga chassis, ndi makina oyimitsa. Ma bawuti apamwamba kwambiri a 10.9 - giredi ndi ofunikira kuti ateteze zida za injini ndikuwonetsetsa kuti galimotoyo ikugwira ntchito komanso chitetezo chake pamayendedwe osiyanasiyana. M'makampani opanga ndege, komwe kumafunikira miyezo yokhazikika komanso magwiridwe antchito, mabawuti ndi mtedzawu amagwiritsidwa ntchito pophatikiza zida za ndege. Kupanga kwawo kolondola, mphamvu zambiri, komanso kukana dzimbiri kodalirika ndizofunikira pachitetezo ndi magwiridwe antchito a ndege.
Kupanga Mphamvu ndi Mphamvu: M'mafakitale amagetsi, kuphatikiza magetsi otenthetsera, nyukiliya, ndi mphamvu zongowonjezwdwa, ma bolt - nut awiriwa amagwiritsidwa ntchito pomangira zida, mapaipi, ndi zida zamapangidwe. Amatha kupirira kutentha kwambiri, kupsinjika, ndi kupsinjika kwamakina komwe kumakhalapo m'malo opangira mphamvu. Kupaka kwa Dacromet kumateteza ma bolts ndi mtedza ku dzimbiri zomwe zimayambitsidwa ndi nthunzi, mankhwala, ndi zinthu zina, kuwonetsetsa kuti zida zopangira magetsi zikugwira ntchito kwanthawi yayitali.
Offshore ndi Marine Engineering: Kwa nsanja za m'mphepete mwa nyanja, zombo, ndi makhazikitsidwe apanyanja, komwe kumakhala madzi amchere, chinyezi chambiri, komanso malo owopsa am'madzi am'madzi nthawi zonse, mabawuti ndi mtedzawu ndi wamtengo wapatali. Kuphatikizika kwa chitsulo champhamvu cha alloy ndi Dacromet galvanization kumawathandiza kupirira kuwonongeka kwa madzi a m'nyanja, kuteteza kulephera kwapangidwe chifukwa cha dzimbiri. Amagwiritsidwa ntchito pomangirira zigawo zingapo zam'madzi, kuwonetsetsa kuti chitetezo ndi kulimba kwa zinthu zakunyanja ndi zam'madzi.
Ubwino wa Zamalonda
Mwapadera Mphamvu Zapamwamba: Ndi miyeso yamphamvu ya Giredi 8.8 ndi 10.9, mabawuti ndi mtedzawu zimapereka mphamvu zolimbikira komanso zokolola. Amatha kulumikiza molimba zigawo zamapangidwe ndikupirira katundu wolemetsa, kugwedezeka, ndi mphamvu zometa ubweya, kuonetsetsa kukhazikika ndi chitetezo cha zomangamanga muzofunikira zosiyanasiyana.
Superior Corrosion Resistance: Dacromet galvanization imapereka kukana kwa dzimbiri, kuposa njira zachikhalidwe zopangira malata. Kuphatikizika kwapadera kwa zokutira kwa Dacromet kumapanga filimu yoteteza yomwe imasiyanitsa bwino chitsulo choyambira ndi malo owononga. Iwo akhoza kukana kukokoloka kwa chinyezi, mchere, mankhwala, ndi zina zowononga zinthu, kwambiri kutalikitsa moyo utumiki wa mabawuti ndi mtedza poyerekeza ochiritsira mankhwala. Izi zimawapangitsa kukhala oyenera kugwiritsidwa ntchito m'malo ovuta pomwe dzimbiri ndizovuta kwambiri.
Kukhazikika kodalirika komanso kotetezeka: Mapangidwe a mutu wa hex wa ma bolts ndi mtedza wofananira amapereka njira yodalirika komanso yotetezeka yomangiriza. Maonekedwe a hexagonal amalola kumangiriza kosavuta ndi kumasula ndi ma wrenches kapena zitsulo, ndipo ndondomeko yolondola ya ulusi imatsimikizira kuti ikhale yolimba, yokhoza kupirira mitundu yosiyanasiyana ya katundu wamakina. Kuphatikiza kwa zinthu zamphamvu kwambiri komanso kuchitapo kanthu koyenera kwa ulusi kumatsimikizira kuti kumangirira kumakhalabe kotetezeka ngakhale pansi pazovuta kwambiri.
Kugwirizana Kwabwino ndi Kukhazikika: Maboliti ndi mtedza izi zimagwirizana ndi zofunikira zapadziko lonse lapansi komanso zamayiko, kuwonetsetsa kuti zimagwirizana bwino pama projekiti ndi mafakitale osiyanasiyana. Miyeso yokhazikika ndi mawonekedwe a ulusi amalola kusinthika kosavuta ndi kusinthasintha, kufewetsa njira zogulira, kukhazikitsa, ndi kukonza. Kukhazikika uku kumachepetsanso chiwopsezo cha zolakwika pakusonkhanitsidwa ndikuwonjezera magwiridwe antchito onse.
Kugwira Ntchito Kwanthawi yayitali: Kupyolera mu njira zokhwima zopangira, chithandizo cha kutentha kolondola, ndi zokutira za Dacromet zapamwamba, ma bolts ndi mtedza zimakhala zokhazikika pamakina ndi anti-corrosion ntchito kwa nthawi yaitali. Amatha kugwira ntchito modalirika pansi pazikhalidwe zosiyanasiyana zovuta zogwirira ntchito popanda kuwonongeka kwakukulu kwa magwiridwe antchito, kuchepetsa ndalama zolipirira ndikuchepetsa chiwopsezo cha zolephera zosayembekezereka. Kukhazikika kwanthawi yayitali kumeneku ndikofunikira pakuwonetsetsa kuti zida ndi zida zofunikira zikugwira ntchito mosalekeza.
Wosamalira zachilengedwe: Poyerekeza ndi mankhwala ena achikhalidwe odana ndi dzimbiri omwe amatha kutulutsa zinthu zovulaza, njira yokutira ya Dacromet ndiyotetezeka ku chilengedwe. Lili ndi zitsulo zochepa zolemera kwambiri ndipo sizimapanga zinyalala zambiri panthawi yopanga, zomwe zimakwaniritsa zofunikira za zomangamanga zamakono zotetezera chilengedwe pomwe zimapereka chitetezo chapamwamba kwambiri.
tiuzeni
Zogwirizana zodziwika bwino
Zitsulo zosapanga dzimbiri zakunja za hexagon
DIN933 Ms hex nut bolts amapangidwa kuchokera kuzinthu zosiyanasiyana, ndi chitsulo cha kaboni kukhala chisankho chofala, chopezeka m'magiredi angapo amphamvu monga 4.6, 5.8, 8.8, ndi 12.9.
8.8 gawo
Maboti omangikawa amagwiritsa ntchito zitsulo zosapanga dzimbiri ngati maziko, zomwe zimawapangitsa kukhala olimba kwambiri kuti asachite dzimbiri komanso kulimba.
Mtedza wa Flange
Mtedza wa Hexagon Flange Nut Flange nthawi zambiri amapangidwa kuchokera kuzinthu zosiyanasiyana zapamwamba, chilichonse chimasankhidwa malinga ndi zofunikira za ntchito.
Ikani khoma nangula
Nangula wapadenga amapangidwa mwaluso kuchokera ku zida zapamwamba kuti zitsimikizire kuti zimagwira ntchito bwino komanso zolimba.
Mtedza wotsekera nayiloni
Mtedza wa Hex Lock nthawi zambiri umakhala wopangidwa kuchokera ku zida zapamwamba kwambiri kuti zitsimikizire kudalirika kwa anti - kumasula komanso kulimba. Chitsulo chachitsulo ndi chinthu chomwe chimagwiritsidwa ntchito nthawi zambiri, makamaka pa ntchito zolemetsa.
M10 Hexagon Socket Bolt Dacromet Carbon Steel Fasteners
https://www.hbfjrfastener.com/wp-content/uploads/Video-01-2.mp4 Ubwino: Zabwino kwambiri ...
Pepala lathyathyathya
Makina ochapira a Flat amapangidwa kuchokera kuzinthu zosiyanasiyana, chilichonse chimasankhidwa kuti chikwaniritse zofunikira zinazake. Chitsulo chofewa ndi chinthu chomwe chimagwiritsidwa ntchito nthawi zambiri pazinthu zonse.
Hexagon flange self-tapping screw
Zomangira zodzibowolera pamutu za Hex nthawi zambiri zimapangidwa kuchokera kuzinthu zosiyanasiyana zogwira ntchito kwambiri, chilichonse chimasankhidwa kuti chikwaniritse zosowa zenizeni. Mpweya wachitsulo ndi zinthu zomwe zimagwiritsidwa ntchito, makamaka m'makalasi monga 45 # ndi 65Mn.
Kukula kwapansi
Maboti okulitsa ma elevator amapangidwa kuchokera ku zida za premium - giredi kuti zitsimikizire chitetezo chokwanira, kudalirika, komanso moyo wautali m'malo oyika zikepe zopanikizika.
M'maso
Mtedza wamaso nthawi zambiri umapangidwa kuchokera ku zida zamphamvu kwambiri kuti zitsimikizire kuti zimagwira ntchito modalirika pansi pa katundu wambiri.
Zozungulira zozungulira mutu
Slotted pan head screws amapangidwa kuchokera kuzinthu zosiyanasiyana, chilichonse chimasankhidwa kuti chikwaniritse zomwe mukufuna. Chitsulo cha kaboni chimayima ngati chinthu chomwe chimagwiritsidwa ntchito nthawi zambiri.
4.8 gawo
GB5783 Blue Zinc Plated Carbon Steel Full Thread Hex Head Bolts imagwiritsa ntchito kwambiri chitsulo cha carbon ngati maziko, nthawi zambiri m'magiredi monga 4.8, 8.8, ndi 10.9.
Dengu la maluwa
Turnbuckles nthawi zambiri amapangidwa kuchokera kuzinthu zosiyanasiyana zapamwamba, chilichonse chosankhidwa malinga ndi zofunikira zomwe zimagwiritsidwa ntchito komanso chilengedwe.
Kudzicheka
Zomangira za konkriti pawindo la Torx drive zimapangidwa makamaka kuchokera ku zida zamphamvu kuti zitsimikizire kukhazikika kodalirika komanso kwanthawi yayitali mu konkriti ndi zida zina zomangira.
Mkulu mphamvu flange kunja hexagon
Black carbon steel hexagonal flange DIN6921 Class 10.9 hex flange bolts amapangidwa makamaka kuchokera ku chitsulo cha carbon high - quality ndi zinthu zinazake zowonjezeredwa kuti akwaniritse zofunikira za 10.9 - kalasi mphamvu.