Kukula kwa ntchito
◇ Malo osangalalira ndi nyumba zokhalamo, malo opezeka anthu ambiri, nyumba zochitira zisudzo ndi nyumba zamalonda;
◇ Mafakitale a makina, mafakitale a mankhwala, magaraji, malo osungiramo katundu, malo osindikizira;
◇ Malo ochitira masewera olimbitsa thupi, zipinda zamainjini, ndi makina oyendetsera pansi m'malo apadera.
Mawonekedwe a Ntchito
◇ Mawonekedwe okongola komanso athyathyathya, mpaka pagalasi:
◇ Mphamvu kwambiri, kuuma kwambiri, kukana kukwawa kwambiri;
◇ Kumamatira mwamphamvu, kusinthasintha kwabwino komanso kukana kugunda;
◇ Yolimba ku dzimbiri la madzi, mafuta, asidi, alkali ndi mankhwala ena;
◇ Palibe mipata, yosavuta kuyeretsa komanso yosavuta kusamalira.
Makhalidwe a dongosolo
◇ Yopangidwa ndi zosungunulira, mtundu wolimba, wonyezimira;
◇ Kukhuthala 2-5mm;
◇ Nthawi yonse yogwira ntchito ndi zaka zoposa 10.
Chizindikiro chaukadaulo
| Chinthu choyesera | Chizindikiro | |
| Nthawi youma, H | Kuuma pamwamba (H) | ≤6 |
| Kuuma kolimba (H) | ≤24 | |
| Kumatira, kalasi | ≤2 | |
| Kuuma kwa pensulo | ≥2H | |
| Kukana kwa mphamvu, Kg-cm | 50 mpaka | |
| Kusinthasintha | 1mm pass | |
| Kukana kutsekeka kwa thupi (750g/500r, kuchepetsa thupi, g) | ≤0.02 | |
| Kukana madzi | Maola 48 popanda kusintha | |
| Wosagonjetsedwa ndi 30% sulfuric acid | Maola 144 popanda kusintha | |
| Wosagonjetsedwa ndi 25% sodium hydroxide | Maola 144 popanda kusintha | |
| Yolimba ku petulo, 120# | palibe kusintha m'masiku 56 | |
| Wosagonja ku mafuta odzola | Masiku 56 osasintha | |
Njira yomanga
Kukonza nthaka yopanda kanthu: kuyeretsa, pansi pake pamafunika ng'oma youma, yathyathyathya, yopanda dzenje, kapena kuyeretsa kwambiri;
Choyambira: chophatikiza kawiri malinga ndi kuchuluka kwa zomwe zanenedwa poyambitsa (kuzungulira kwamagetsi kwa mphindi 2-3), ndi chopangira chozungulira kapena chokokera;
Mu matope a utoto: magawo awiri ofanana malinga ndi kuchuluka kwa mchenga wa quartz womwe wasunthidwa (kuzungulira kwamagetsi kwa mphindi 2-3), ndi chopangira chokokera;
Mu utoto wa putty: magawo awiri olingana malinga ndi kuchuluka komwe kwatchulidwa kosakaniza (kuzungulira kwamagetsi kwa mphindi 2-3), ndi kapangidwe ka scraper;
Chophimba pamwamba: chopaka utoto chodziyimira payokha ndi chopopera malinga ndi kuchuluka kwa kusakaniza komwe kwatchulidwa (kuzungulira kwamagetsi kwa mphindi 2-3), pogwiritsa ntchito tsamba lopopera kapena lokwela lopangidwa ndi mano.
Mbiri yomanga