Cold macheka ndi mtundu watsopano wa zitsulo kudula chida, mbali yake yaikulu ndi yakuti sichimapanga kutentha panthawi yodula, choncho imatchedwa "cold saw". Imagwiritsa ntchito tsamba lozungulira kwambiri, kudula pansi pa madzi othamanga kwambiri kapena mafuta amadzimadzi amatha molondola komanso moyenera. kudula zitsulo zosiyanasiyana. Poyerekeza ndi macheka achikhalidwe, macheka ozizira ali ndi maubwino angapo:

Ubwino wodula kwambiri: Cold saw imatha kudula popanda kutulutsa kutentha, imapewa mapindikidwe, okosijeni ndi zovuta zina zomwe zingachitike ndi macheka otentha, motero kuonetsetsa kuti kudula kuli bwino.

Liwiro lodula kwambiri: Popeza kuti macheka ozizira amadulidwa ndi tsamba lozungulira kwambiri, ndiye kuti liwiro lodulira limakhala lachangu kwambiri, lomwe lingathandize kwambiri kupanga bwino.

Kudula mitengo yotsika: Macheka ozizira samafunikira chozizira chowonjezera kapena mafuta ndipo amangofunika mafuta ochepa amadzimadzi, motero mtengo wake ndi wotsika.

Ekutetezedwa kwachilengedwe komanso kusunga mphamvu:Macheka ozizira satulutsa mpweya wambiri wotulutsa komanso kuwononga madzi, samawononga chilengedwe komanso samawononga mphamvu.

Ntchito zosiyanasiyana: Cold macheka amatha kudula zipangizo zosiyanasiyana zitsulo, kuphatikizapo aluminiyamu, mkuwa, zitsulo, zitsulo zosapanga dzimbiri, etc.

Mwachidule, macheka ozizira ali ndi ubwino wa dzuwa, kulondola, mtengo wotsika, kuteteza chilengedwe ndi kupulumutsa mphamvu, ndipo amagwiritsidwa ntchito kwambiri popanga, zomangamanga ndi zina. zida zikuluzikulu m'munda wa zitsulo kudula.