Ukukhethwa kweMpompo yeVane yeZityalo zeSitofu saseMzansi-mpuma Asia: Izinga lokuhamba kunye neNkcukacha zoXinzelelo

Izinto ezibalulekileyo ekufuneka ziqwalaselwe

Xa ndandingena kwindawo yam yokuqala yokwenza i-injection molding eShenzhen ngo-2009, umphathi wandinika ikhathalogu egugileyo wathi, “Khetha enye efanelana nawe.” Ndachitha iintsuku ezintathu ndithelekisa iimodeli zepompo neesekethe ze-hydraulic ngaphambi kokuba ndiqonde ukuba yintoni na indlela yokukhetha embi “ehambelanayo”. Kwiminyaka elishumi elinesihlanu kamva, ndincede amashishini amaninzi aseMzantsi-mpuma Asia—ukusuka kwiivenkile zezinto zokuzonwabisa ezingama-50 eHo Chi Minh City ukuya kwiilayini ezizenzekelayo ezingama-3,000 eBangkok—khetha ipompo ye-vane efanelekileyo yokusetyenziswa kwazo. Nantsi into endiyifundileyo, kwayekutheni inkqubo yokukhetha abathengisi bepompo ye-vane ibaluleke ngaphezu kokuba uninzi lwabathengi luqonda.

Ukusebenza kweVane Pump kwizicelo zokubumba inaliti ezisebenza ngesantya esiphezulu

Ukubumba ngenaliti yenye yezona zinto zinzima kakhulu ekusetyenzisweni kwe-hydraulic ekwenzeni izinto. Umatshini kufuneka uzise ulwelo oluchanekileyo, olunoxinzelelo oluphezulu kwisikrufu esifaka i-polymer enyibilikisiweyo kwisikhunta ngesantya esingaphezulu kwe-500 mm/s, uze ubambe olo xinzelelo luqinileyo ixesha lonke lomjikelo wokupholisa.Ngenxa yokuba iimpompo ze-vane zilungelelene ngokwendalo kuyilo lwazo, zivelisa ukuhamba kwamanzi okunoxinzelelo oluncinci.—kwaye loo nto yokuqina yiyo kanye eyahlula inxalenye elungileyo kwingxaki yokungavumi ngokukhawuleza.

Xa ndandityelele umzi-mveliso wezixhobo zeemoto waseThailand ngo-2023, umphathi wabo wolondolozo wandibonisa iqela lezinto ezilahliweyo ezazine-gate disastige engabonakaliyo—uphawu oluqhelekileyo loxinzelelo lwe-injection olungaguquguqukiyo. Iipompo zabo zegiya ezingalinganiyo zazijikeleza kwi-175 bar kunye ne-pressure ripple ye-±8 bar. Sizitshintshele ngeepompo ze-vane ezilinganisiweyo ezivelaVicks Hydraulic, kwaye loo ripple yehle yaya kwi-±1.5 bar. Izinga lokwaliwa lehle ukusuka kwi-4.2% ukuya kwi-0.6% kwiiveki ezimbini.

Iimpompo zeVane ziyaphumelela ekubumbeni inaliti ngezizathu ezintathu zesakhiwo:

• Uyilo olulinganiselayo lususa umthwalo we-radial.Ipleyiti yesango elijikelezayo kwipompo ye-vane elinganiselayo ithetha ukuba i-shaft ayiboni mandla e-radial acocekileyo, ngoko ke ukuguguleka kweebheringi kuncitshiswe kakhulu xa kuthelekiswa neempompo zegiya okanye zepiston ezisebenza ngoxinzelelo olulinganayo.
• Ulwandiso lwe-vane oluzihlawulelayo.Njengoko ii-vanes ziguga, indlela esebenza ngayo igcina unxibelelwano ne-cam ring—oko kuthetha ukuba i-pump igcina ukusebenza kwayo okuphezulu nangona iguga. Kwi-gear pump, ukuguga akunakuphikiswa kwaye ukusebenza kwayo kuyehla ngokuthe ngqo.
• Ukusebenza ngokuthula ngesantya esiphezulu.Ukubumba ngenaliti kusebenza ngesantya esiphezulu sokujikeleza, oko kuthetha ukuba ipompo isebenza rhoqo kufutshane ne-RPM yayo ephezulu. Iipompo zeVane zisingatha oku ngaphandle kokukhwaza okwenza iiyunithi zehydraulic pump zegiya zibe yingozi yokuva phantsi kwezityalo ezingagqunywanga kakuhle.

Izinga lokuhamba: Utshintsho olulawula ixesha lakho lomjikelo

Ukuba uxinzelelo ngamandla agcwalisa isikhunta, isantya sokuhamba kwamanzi sisantya apho loo mandla ethunyelwa khona.Ngenxa yokuba ixesha lomjikelo wokubumba ngenaliti lixhomekeke ngokuthe ngqo kwixesha lokugcwalisa, izinga lokuhamba kwepompo ye-hydraulic liba yingxaki ephambili yokukhupha.—hayi iibhanti zeheater, hayi imijelo yokupholisa, kwaye ayisoloko iyinto yoyilo lwesikhunta ngokwaso.

Ubudlelwane bulula: ipompo ehambisa i-60 L/min iya kuzalisa inxalenye eqhelekileyo ye-250g PP kwimizuzwana eyi-2.1. Ipompo efanayo kwi-30 L/min ithatha imizuzwana eyi-4.2. Kwisityalo esiqhuba imijikelo eyi-15,000 ngosuku, loo mahluko umele imizuzwana eyongezelelweyo engama-31,500—okanye iiyure eziyi-8.75—yexesha lomatshini ngosuku, kumatshini omnye ocinezelayo.

Ukulinganisa Isantya Sokuhamba Kweenqanawa kunye neClamp Tonnage

Ayizizo zonke iipompo ezihambayo ezifanela ubungakanani bomatshini ngamnye. Nantsi isikhokelo sobunjineli endisisebenzisayo xa ndilinganisa ipompo ye-injection molding press:

Ingqiqo ephambili apha kukuba ukwenza ipompo ibe nkulu kakhulu kufana nokuyifaka ngaphantsi.Ipompo ekhupha i-100 L/min kwi-press ye-100-ton iya kubangela ukuxinana kwe-flow kwimigca nakwi-manifold, ivelise ubushushu kwaye inyuse umngcipheko wokungaphumeleli kwe-seal. Umgaqo endiwulandelayo: fanisa ukufuduka kwepompo ukuze inikeze ixesha lokuzalisa elijoliswe kulo ngelixa igcina isantya somgca singaphantsi kwe-6 m/s kwipayipi yoxinzelelo.

Indlela iMozulu yaseMzantsi-mpuma Asia echaphazela ngayo uKhetho lweNqanaba lokuhamba kwamanzi

Nantsi inguqu engafane ijongwe kwiikhathalogu: ubushushu obungqongileyo. Izityalo eBangkok, eHo Chi Minh City, naseManila zihlala zisebenza ngamaqondo obushushu aphantsi evenkileni angama-35–40°C.Ngenxa yokuba i-hydraulic oil viscosity inyuka kakhulu ngaphantsi kwama-25°C kwaye iba buthathaka kakhulu ngaphezu kwama-60°C, i-window yobushushu yokusebenza kwizityalo zaseMzantsi-mpuma Asia incinci kunokuba abathengi baseYurophu becinga..

Oku kuthetha ukuba ipompo echazwe kumgangatho weworkshop waseYurophu ongama-20°C iya kubona ukusebenza kwayo kwevolumu kwehla nge-8–12% kumzi-mveliso waseThailand ongenazimo. Xa ndicacisa iipompo zabathengi abakwezi meko, ndisoloko ndicebisa ukuba kunyuswe umlinganiselo wokufuduka nge-15% ukuze kuhlawulwe. Lixabiso elincinci kwangaphambili elithintela ukungasebenzi okukhulu kamva.

Iinkcukacha zoxinzelelo: Ngaphaya kweNombolo yeSheet yeDatha

Iphepha ledatha ngalinye le-vane pump likhokela ngomlinganiselo ophezulu woxinzelelo—i-140 bar, i-175 bar, i-210 bar. La manani ayimfuneko kodwa awanelanga.Ngenxa yokuba ukubumba ngenaliti kufuna uxinzelelo oluhlala luhleli imizuzwana emi-2 ukuya kweyesi-8 ngomjikelo ngamnye, umlinganiselo woxinzelelo oluqhubekayo lwepompo ubaluleke kakhulu kunomlinganiselo wayo oqhubekayo..

Makhe ndichaze isizathu ngomzekelo ocacileyo ovela kumgangatho wethu wemveliso. Uthotho lwethu lwe-VQH lulinganiswe kwi-175 bar continuous, kodwa sivavanya iyunithi nganye ukuya kwi-210 bar intermittent kwi-500,000 cycles ngaphambi kokuba ikhululwe. Ngumgangatho endiwugcinayo kwimveliso yethu, kuba ndiyazi ukuba kwi-injection molding yokwenyani, i-hydraulic circuit ayiphumli.

Ukuqonda iRipple yoxinzelelo kunye nempembelelo yalo kuMgangatho weCandelo

I-pressure ripple kukutshintshatshintsha koxinzelelo oluphumayo olujikeleze indawo ebekwe kuyo—okubangelwa kukucinezelwa okujikelezayo kunye nokukhululwa kolwelo lwe-hydraulic njengoko iqela elijikelezayo lepompo lidlula kwiindlela zalo zokungenisa kunye nokukhupha.Kwi-injection molding, i-ripple ibonakala ngokungangqinelani kwemigca ebotshelelweyo kunye neefoto ezimfutshane ngamanye amaxesha ezibangela ingxaki ekusombululeni iingxaki.kuba zibonakala zingaqhelekanga.

Iimpompo ze-vane ezilinganiselayo zifumana i-pressure ripple ephantsi njenge-±1 bar kwi-1,800 RPM, xa kuthelekiswa ne-±5 ukuya kwi-±8 bar kwiimpompo zegiya kwiimeko ezifanayo. Xa usebenza kwi-175 bar ubambe uxinzelelo, loo mahluko we-14 bar peak-to-peak ngumda phakathi kwenxalenye edlula rhoqo i-QC enemilinganiselo kunye nenye engayidluliyo.

Ulawulo lokuFuduka: Okuguquguqukayo vs. Okulungisiweyo

Kwizicelo zokubumba ngenaliti, phantse ndisoloko ndicebisaimpompo ye-vane yokufuduka eguquguqukayo ehlawulelwayo ngoxinzelelongaphezu kwemodeli yokufuduka esisigxina. Isizathu sicacile: ukubumba ngenaliti kunezigaba ezimbini ezahlukeneyo—ukuzalisa nokubamba—okufuna amazinga ahlukeneyo okuhamba kwamanzi kwipompo enye.

Ngexesha lokuzalisa, isikhunta asibi nanto kwaye isekethe ye-hydraulic ifuna ukuhamba okuphezulu kuxinzelelo oluphakathi. Ngexesha lokubamba, isikhunta sigcwele kwaye isekethe ifuna ukuhamba okuncitshisiweyo kuxinzelelo oluphezulu. Ipompo yokufuduka esisigxina ichitha amandla amakhulu ngexesha lesigaba sokubamba, ilahla ulwelo kwivalvu yokunceda. Ipompo eguquguqukayo ehlawulelwayo ngoxinzelelo inciphisa ngokuzenzekelayo ukuhamba xa uxinzelelo lusondela kwindawo ebekiweyo, inciphisa ukusetyenziswa kwamandla ngama-25–35% ngexesha lesigaba sokubamba.

Kwifektri esebenza ngoomatshini bokushicilela abangama-20 iiyure ezili-18 ngosuku, loo nciphiso yamandla engama-25–35% ithetha amawaka eedola ngenyanga.Xa ndibala iindleko zizonke zobunini bomthengi, ndisoloko ndilinganisa ukonga amandla kweminyaka emi-5 kwiimpompo eziguquguqukayo zokufuduka xa kuthelekiswa neendleko zazo zangaphambili eziphezulu ngama-20-30%.—kwaye i-variable pump iphumelela kwiimeko ezili-11 kwezili-12 endizihlalutyileyo.

Inkqubo Yokuvelisa: Indlela Ukuchaneka Kwifektri Okuba Ngayo Ukuchaneka Kwiphephandaba Lakho

Ndifuna ukurhoxisa ikhefu kwindlela ezenziwa ngayo ii-vane pumps, kuba ukuqonda inkqubo yokuvelisa yeyona ndlela yokuvavanya ukuba ngaba umthengisi unokubonelela ngomgangatho ohambelanayo kwinqanaba elithile.Umahluko phakathi kwepompo ye-vane ehlala iminyaka esi-8 kunye neyohlulekayo xa ineenyanga ezili-18 udla ngokugqitywa ekusetyenzisweni kwezinto ezintathu: i-cam ring, i-port plate, kunye nezihlalo ze-shaft bearing..

Umatshini Wokulungisa I-Cam Ring ngokuchanekileyo

I-cam ring (ekwabizwa ngokuba yi-rotor ring okanye i-cartridge) yintliziyo ye-vane pump. Imisela ukufuduka nge-revolution nganye kunye ne-sliding kinematics ye-vane. Kwii-balanced vane pumps, i-cam ring yintsimbi eyenziwe ngentsimbi enye eneprofayili yangaphakathi ye-elliptical. Ukunyamezelana kule profayili yi-±0.015 mm kwimveliso yehlabathi. Kwi-Vicks Hydraulic, siqhuba ii-cam rings zethu ngokusebenzisa i-CNC grinding nge-in-process laser gauging—inxalenye nganye ilinganiswa ngaphambi kokuba iphume kumatshini, ayithathwa isampuli emva kwebhetshi.

Ngenxa yokuba iprofayili ye-elliptical yeringi yekhamera imisela i-geometry yokuhamba kwepompo, naluphi na utshintsho oluvela kwi-spec lubangela ukungalingani koxinzelelo olungenakukwazi ukuhlawulelwa yi-vane.I-cam ring engaphandle kwesangqa ivelisa iingxaki ezifanayo nezo bendizichazile ngaphambili. Ndikhe ndatyelela iifektri apho izinga lokwaliwa lehla ngokungaqondakaliyo emva kokuba betshintshe ababoneleli—isizathu yayikumthengisi one-QC eyayilinganisa yonke inxalenye yeshumi, hayi yonke inxalenye.

I-Port Plate: Apho Ukuchaneka Kudibana Nokuqina

I-port plate yinxalenye engashukumiyo ehambisa ulwelo ngaphakathi nangaphandle kwegumbi lokumpompa ngeefestile ezihambelana nokujikeleza kwerotor. Ukugqitywa komphezulu wayo kunye nokuba tyaba kwayo kubalulekile: uburhabaxa beRa 0.4 μm okanye ngaphezulu buyadingeka kubuso be-port plate ukuthintela ukuvuza kwangaphakathi okonakalisa ukusebenza kakuhle kwe-volumetric.

Sisebenzisa unyango lomphezulu olukhethekileyo kwiiplati zethu zezibuko olunyusa ubunzima bomphezulu ukuya kwi-58–62 HRC ngelixa sigcina ukugqitywa kweRa 0.4 μm.Olu nyango luthintela i-micro-channeling ephuhliswa kwii-port plates eziqhelekileyo emva kweeyure zokusebenza ezingama-2,000–3,000.—into ebangela ukuba ukusebenza kakuhle kwehle nangona ii-vanes kunye neebheringi zisesekwimeko ethile.

Ulawulo Lomgangatho Kwizinga: Iiyunithi ezingama-80,000 Ngonyaka

Omnye wemibuzo endiyibuzwa rhoqo ngabaphathi bokuthenga ngulo: “Uwugcina njani umgangatho xa imveliso iphezulu?” Impendulo yam kukuba umthamo kunye nomgangatho azikho ngxakini ukuba inkqubo yakho iyilwe ngokuchanekileyo.KwiVicks Hydraulic, imigca yethu emithandathu yemveliso ekumgangatho wehlabathi iqhagamshelwe kwizikhululo zovavanyo ezizenzekelayo eziqhuba yonke ipompo ngovavanyo lokusebenza lwemizuzu engama-45 ngaphambi kokuba ivunyelwe ukuthunyelwa..

Uvavanyo ngalunye lulinganisa: ukusebenza kakuhle kwevolumu kwi-1,200 kunye ne-1,800 RPM; i-ripple yoxinzelelo kwi-140 kunye ne-175 bar; inqanaba lengxolo kwi-1 meter; kunye nokuhamba kokukhupha amanzi kwi-case kuxinzelelo oluphezulu. Yonke indawo yedatha irekhodwa ngenombolo ye-serial. Xa umthengi efowunela umbuzo wokusebenza, ndingakwazi ukutsala ingxelo yovavanyo lweyunithi yakhe ethile kwimizuzwana engama-90. Yilo hlobo lokulandeleka olungenakubonelelwa yi-batch QC.

Ngokutsho kweIKomiti ye-ASTM F3 malunga namandla olwelo, iimpompo ze-vane ezisebenza kwizicelo zokubumba i-injection kwimizi-mveliso kufuneka zibonise ukusebenza kakuhle kwe-volumetric ye-92% okanye ngaphezulu kwiimeko ezilinganisiweyo—umgangatho esiwugqithayo ngokuyila ukuya kuthi ga kwi-94% ubuncinci kumgangatho wethu wovavanyo.

Ixabiso lilonke lobunini: Kutheni ixabiso lokuthenga liyinombolo elahlekisayo

Ndibone amaqela okuthenga ekhetha ababoneleli ngeempompo zevane ngokwexabiso leyunithi kuphela, kwaye ndibukele izityalo ezifanayo zisokola ngenxa yokunyuka kweendleko zokulungisa emva kweminyaka emibini.Ngenxa yokuba iisekethe ze-hydraulic zokubumba ngenaliti azixoleli—ixesha ngalinye lokungasebenzi elingakhange licwangciswe kwi-press libiza i-$200–$500 ngeyure kwimveliso elahlekileyo—ixabiso lokwenyani lepompo alisoze libe lixabiso layo lokuthenga..

Iindleko Zangaphambili vs. I-TCO Yeminyaka Emi-5

Nantsi indlela eqhelekileyo yokuthelekisa iindleko endiyakhele abathengi xa bethelekisa i-balanced vane pump (Vicks VQH series, $1,850/unit) xa ithelekiswa ne-unbalanced gear pump ($780/unit) kwi-250-ton press esebenzisa imijikelo engama-6,000 ngosuku:

Ipompo ye-vane elinganiselayo ixabisa ngaphantsi nge-4.9× kwiminyaka emihlanu—inani elibonakala lingenakwenzeka de ube ubala i-$4,800 ngexesha lokungasebenzi elingacwangciswanga elibangelwa yipompo engabizi kakhulu. Ngokwamava am, iziganeko zokugcinwa azisasazwanga ngokulinganayo: ipompo yegiya iya kusebenza ngokuthembekileyo iinyanga ezili-12-18, emva koko ifune ukwakhiwa kwakhona, emva koko isebenze ezinye iinyanga ezisi-8, ize ingasebenzi kakuhle ngexesha lokutshintsha ebusuku xa kungekho mntu ubukeleyo.

Ukungaguquguquki kweBatch: Kutheni Kubalulekile Ngaphezu Kokuba Ucinga

Xa uthenga iipompo ezingama-20 zomgca omtsha okanye iipompo ezingama-50 zokuphucula izithuthi, ukuhambelana kwebhetshi kubaluleke kakhulu.Umthengisi osebenzisa iipompo ezingama-500 aze athumele ezona zilungileyo ezingama-50 njenge "premium" ngelixa ethengisa ezinye njengoko ziqhelekileyo akanguye umthengisi omfunayo.—kuba awunandlela yokwazi ukuba iyunithi yakho ivela kweliphi inqanaba.

Apha eVicks Hydraulic, sisebenzisa inkcazo enye kuzo zonke iiyunithi zemveliso. Yonke ipompo ephuma emgangathweni wethu ihlangabezana nemigangatho yovavanyo efanayo. Umahluko kuphela phakathi kweelebheli zethu ezisemgangathweni kunye ne-premium yimibala yepeyinti kunye noyilo lwezibuko. Ukuba iyunithi ayiphumeleli kuvavanyo lwayo, iyasuswa, ayithotywanga. Sisusa malunga ne-1.8% yemveliso. Abanye abakhuphisana nabo basusa ngaphantsi kwe-1% - nto leyo ivakala ingcono de uqonde ukuba imigaqo yabo yovavanyo nayo ayingqongqo kangako.

Iziqinisekiso zeeMarike zaseLwandle naseZimbonini zaseMzantsi-mpuma Asia

Ukuba ufuna iimpompo zezixhobo zokubumba ngenaliti eziza kuthi ekugqibeleni zithunyelwe kwiindawo zaselwandle okanye ezikude nolwandle—okanye ukuba isityalo sakho sikwindawo yemizi-mveliso esecaleni kwendawo yokuthutha iinqanawa—iimfuno zesatifikethi zitshintsha kakhulu.Iziqinisekiso zaselwandle azizo nje iingxaki zoburhulumente; zimele ukuqinisekiswa kobunjineli bokwenyani bokuthembeka koxinzelelo, ukulandeleka kwezinto, kunye nokuqina kwenkqubo yomgangatho..

I-Vicks Hydraulic ithatha inxaxheba kwiikomiti zesizwe zokuhlaziya umgangatho wee-hydraulic components, oko kuthetha ukuba iqela lethu lobunjineli libandakanyeka ngokuthe ngqo ekumiseni imigangatho ekufuneka iimveliso zethu zihlangabezane nayo.Le ayisiyongxelo yokuthengisa—yiyo loo nto sinokubonelela ngeemveliso eziqinisekisiweyo zeCCS, DNV, ABS, BV, kunye neLR ezinokulandeleka ngokupheleleyo.sibuyele kubaboneleli bethu bentsimbi.

Kubathengi baseVietnam, eThailand naseIndonesia abafuna imveliso ekufutshane nolwandle, iziqinisekiso ezibalulekileyo ekufuneka ziqinisekiswe zezi:

• I-CCS (uMbutho woHlelo lwaseTshayina):Kuyimfuneko kuyo nayiphi na into ye-hydraulic efakwe kwiinqanawa okanye iinqanawa ezineflegi yaseTshayina ezisebenza emanzini aseTshayina
• I-DNV (Det Norske Veritas):Yamkelwe ngokubanzi kulo lonke elaseMzantsi-mpuma Asia imisebenzi yeoyile negesi
• I-ABS (i-American Bureau of Shipping):Ikhethwa ngabanini beenqanawa abaneflegi yaseMelika okanye abanomdla kwiinshorensi
• I-BV (iBureau Veritas):Ubukho obuqinileyo kwiimarike zokuthumela ngenqanawa zaseFransi naseMzantsi-mpuma Asia
• LR (Irejista kaLloyd):Ngokwembali yayithandwa kakhulu ziinkampani zokuthumela ngenqanawa zase-UK nase-Commonwealth

Imibuzo Esixhenxe Yokuqinisekisa Ubunzulu Bobuchwephesha Bomthengisi Weepompo Zakho ZeVane

Ngaphambi kokuba uzibophelele kwi-odolo yokuthenga, ndicebisa ukuba ubuze umthengisi wakho le mibuzo mihlanu—nawuphi na umenzi othembekileyo kufuneka akwazi ukuyiphendula yonke:

1. "Ngaba ungandinika ingxelo yovavanyo lwenombolo ethile yochungechunge endiyithengayo?"Ukuba impendulo ithi “singathumela isatifikethi esiqhelekileyo,” hamba. Izatifikethi zeqela zithetha ukuba akukho mntu ujonge iyunithi yakho ethile.
2. "Ingakanani i-volumetric efficiency yakho kwiimeko ezilinganisiweyo, kwaye uyilinganisa njani?"Impendulo mayibe ngu-“94%+ kwi-1,800 RPM, i-175 bar, ilinganiswa ngokwe-ISO 4409 nganye.”
3. "Ingakanani ixabiso lakho lokwenyani lezinto ezilahliweyo?"Ababoneleli abathi izinto ezilahliweyo eziphantse zibe zero azinazo iimvavanyo ezaneleyo okanye abanyanisekanga. Sijolise kwi-1.5–2.0% kwaye siyipapashe.
4. "Ngaba unayo nayiphi na imvume yombutho wokuhlelwa kweelwandle, kwaye ndingakuqinisekisa?"Isiqinisekiso ngasinye kufuneka siqinisekiswe kwiwebhusayithi yombutho okhuphayo.
5. "Lingakanani ixesha lakho lokuvelisa iodolo ephindaphindwayo?"Ukuba usebenzisa isityalo esinee-press ezili-15, udinga umthengisi onokuzisa iyunithi entsha kwiintsuku ezi-5-7 zomsebenzi, kungekhona ezingama-45.

Sakhe iziseko zethu zemveliso kunye nezothutho ngokukodwa ukuze siphendule loo mbuzo wokugqibela. Xa umthengi waseVietnam wasitsalela umnxeba ngentsimbi ye-11 emva kwemini ephethe ipompo engasebenzi kakuhle kumgca wabo ophambili, sasineyunithi entsha kwinqwelo-moya esuka eHangzhou ukuya eHo Chi Minh City ngentsimbi yesi-8 kusasa ngentsasa elandelayo.Oko akusiyo indawo yokubukela iinkonzo zabathengi—yinyani yokusebenza komatshini we-hydraulic ngomlinganiselo omkhulu..