Ugongolo oluphambili lweI-single-girder Bridge craneakunakulingani, okuthinta ngqo ukucubungula okulandelayo. Okokuqala, sizobhekana neflethi yogongolo ngaphambi kokuqhubekela phambili kwinqubo elandelayo. Lapho-ke isikhathi se-sandblasting ne-sliating sizokwenza umkhiqizo mhlophe futhi ungenaphutha. Kodwa-ke, ama-cranes ebhuloho anamamodeli ahlukene namapharamitha anezimpawu ezahlukene zesakhiwo zemishayo yazo eyinhloko.
Sidinga kuqala ukuqonda amaphuzu amabili alandelayo ngomkhiqizo:
1. Yiziphi izinto zokwakha kanye namajamo webhodi adingekayo ukucubungula ugongolo oluphambili lomshini webhuloho (amabhodi, ama-rolls, izingxenye ezibunjiwe ezikhethekile, ababusi)?
2. Uma ucabanga ngosayizi we-main eyinhloko futhi ingaphezulu le-crane eyodwa-girder (kuya ngomkhiqizo, izinqubo ezahlukahlukene zeflethi zingakhethwa ukuze kuqedwe izindleko nokulawulwa kokusebenza), hlobo luni lomphumela wokusetshenziswa kanye nokusetshenziswa okusebenzayo okufanele kufelwe ugongolo oluphambili?
Njengamanje, kunezindlela ezimbili zokubhekana neflethi yogongolo oluphambili lwe-crane:
1. Ukusetshenziswa kokwelashwa okungokomsebenzi ukususa izingxenye ze-convex ezibunjiwe ngokusika kanye nokuguqulwa kwepulasitiki komhlaba wezinto ezibonakalayo ukuthola indlela ebushelelezi yokupholisa indawo, futhi imvamisa isebenzisa amatshe okugaya, i-polifing fluid, njll.
2. I-Chemical Polishing. I-Chemical Polishing ukwenza izingxenye ze-microscopic convex zesikhathi sokuqokwa kwedatha zihlaziswe kuqala ku-medium yamakhemikhali, ngaleyo ndlela uthole indawo ebushelelezi. Inzuzo eyinhloko yale ndlela ukuthi ukusebenza okuyinkimbinkimbi kungabanjiswa ngaphandle kwemishini eyinkimbinkimbi, futhi amapuleti amaningi ensimbi angavinjelwa ngasikhathi sinye. Inkinga nge-Chemical Polishing ukusetshenziswa koketshezi okupholishe kanye nezinto zokwakha umkhiqizo. Ubudlova obungaphezulu obutholwe yi-Chemical Polishing imvamisa i-10μM.
