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Nuxurka nuxurka: Miisaanka fudud ee mishiinku maaha kaliya habka muhiimka ah ee ilaalinta tamarta baabuurta iyo dhimista qiiqa, laakiin sidoo kale waa mid ka mid ah yoolalka horumarinta baabuurta.Miisaanka matoorka ayaa inta badan ah midka ugu fudud ee block-ka.Waxaa jira laba siyaabood oo muhiim ah oo lagu iftiimiyo block-ka dhululubada: mid waa in la doorto aluminium aluminium ah oo cufnaanta hoose leh, midda kalena waa in la yareeyo dhumucda derbiga.Caadi ahaan maaddadu waa birta kabka ah ee vermicular ama birta ductile.Si kastaba ha ahaatee, birta kabka cawl ayaa weli si weyn loo isticmaalaa laga bilaabo hal dhululubo ilaa 2-6 dhululubo oo toosan, iyo sidoo kale V6 iyo V8 cylinders;Xataa baloogyada matoorka naaftada badda ee waaweyn ayaa laga sameeyay bir cawl leh.Tani waxay u badan tahay sababtoo ah block dhululubo ee kabka cawl ayaa leh: qiimaha wax soo saarka hoose marka la barbar dhigo block aluminium alloy kabka;Iska caabbinta seismic heer sare ah, saameynteeda suuxdinta (jilicsanaanta gudaha) ayaa aad uga weyn tan aluminium aluminium, xitaa ka weyn tan birta iyo birta ductile.Birta graphite ee kabka ah waxay leedahay kuleyl kuleyl wanaagsan iyo dareen yar oo heersare ah.Baloogyada cylinders ee hm479q, M12, jl1.8t iyo matoorada kale ee baabuurta ee ay soo saarto shirkadeena waxay ka samaysan yihiin HT250 iyo HT300.Tuubitaanka block ee dhululubada oo buuxinaya heerka tayada badeecada waxaa lagu helay shubid toosan iyo habka duritaanka hoose, alloy CE sare oo hooseeya iyo Sr Si inoculant.