Izizathu Eziqhelekileyo kunye Neengcebiso Zonyango Zokuphambuka Kwesakhiwo SeBonnet
Ulwakhiwo lwebhonethi aluyongxaki kangako kwiivalvu ezincinci, kodwa xa sele ingaphezulu kwe-DN400, impazamo yokuhlanganisa kulula ukuyityhila. Iivalvu ezininzi zebhola okanye iivalvu zesango kwindawo yeprojekthi zinokungasebenzi kakuhle kokuvula nokuvala okanye ukupakisha, kwaye zonke zinxulumene nokungafani okanye ukuphambuka kwesigqubuthelo sevalvu.
Ngaphambili besithathe iprojekthi yevalvu yebhola enobubanzi obukhulu kwiindawo zemigodi, kwaye umthengi uthe isandi sokuvula nokuvala asilunganga, kwaye ivalvu yebhola ephathwayo ibambeke phakathi. Ekuqaleni, babecinga ukuba yingxaki ngesiqu sevalvu okanye ibhola, kodwa kamva sabuyela kumzi-mveliso ukuze sijonge ukuba yayikukubetha okuncinci komphezulu weflange ecaleni kwesiciko sevalvu, nto leyo eyabangela ukuba umngxuma wesihlalo somngxuma ongezantsi uphambuke embindini womzimba wevalvu nge-0.3mm. Ayibonakali inkulu, kodwa kwangoko xa umongo webhola ujika, i-axis ayihambelani kwaye i-torque ayizinzanga.
Ukuphendula olu hlobo lwengxaki, ngoku sinika abathengi icebiso: umzobo kufuneka uphawulwe ngokucacileyo ngomphezulu wokubeka izinto, kwaye ngokubanzi kucetyiswa ukuba kusetyenziswe umphezulu weflengi ephezulu okanye umngxuma ophakathi njengesalathiso sokwenza i-clamping. Ingakumbi kwiidayamitha ezinkulu, sicebisa i-integral vertical turning machining, engahlulwanga ibe ziimisebenzi ezimbini. Ukuba icala lomthengi alinakubanjwa lilonke, sinokunceda ekongezeni imingxunya yokubeka izinto okanye iikholamu zesikhokelo ngokwendlela yokudweba yenkqubo.
Ukongeza, ngexesha lokuhlanganiswa kwezinye iiprojekthi kwindawo, ukusasazeka komngxuma webholithi wesigqubuthelo sevalvu kukhokelela ekuhlanganisweni okunyanzelekileyo, okubonakala ngathi akukho ngxaki ukuyifaka, kodwa eneneni, uxinzelelo lokulayisha kwangaphambili belungalingani, kwaye kulula ukuyikhulula okanye ukuvuza emva kwexesha lokusebenza. Sihlala senza isiqinisekiso sendibano yokulinganisa ngaphambi kokuthunyelwa, kwaye ubukhulu obuphambili buziigeyiji ukuqinisekisa ukuba ukuqhutywa kweringi yeflange kungaphakathi kwe-0.05, kwaye ukuthe nkqo komngxuma webheri kunye ne-axis kusemgangathweni.
Nangona ibhonethi ifanelekile, 'yindawo yokuqala' yokuchaneka kwesakhiwo esingaphezulu siphela, kwaye ukuba asilunganga, umongo webhola, isiqu sevalvu, kunye nebhokisi yokuzalisa zonke ziya kuchaphazeleka. Kucetyiswa ukuba umthengi acinge ngobudlelwane bokulingana kwinqanaba loyilo, kwaye ukuba kuyimfuneko, singabonelela ngeengcebiso zesakhiwo sokudibanisa okanye sincede ekulungiseni ingqiqo yokulinganisa ukuze kuthintelwe ukuphinda kusetyenziswe.