Waxaa hubaal ah in khasaaro ka dhalan doonto isticmaalka birta la shito iyo birta la shito, waxaana jiri doona khasaarooyin kala duwan sababtoo ah habka loo isticmaalo iyo walxaha kala duwan ee loo isticmaalo. Haddaba ma ogtahay in cimriga adeegga ee birta la shito ee leh adkeysi kala duwan uu sidoo kale kala duwan yahay?
Guud ahaan, adkaanta birta la shito waxay la mid tahay xawaaraha nadiifinta, taas oo ah, adkaanta birta la shito oo sii kordheysa, xawaaraha nadiifinta oo sii dhakhso badan, taas oo sidoo kale macnaheedu yahay in isticmaalka birta la shito uu sii weynaan doono cimriga adeegguna uu gaaban doono.
Birta la duray waxay leedahay saddex adayg oo kala duwan: P (45-51HRC), H (60-68HRC), L (50-55HRC). Waxaan tusaale ahaan u qaadanaynaa adaygga P iyo adaygga H:
Adkaanshaha P guud ahaan waa HRC45 ~ 51, iyadoo la farsameynayo biraha qaar ee adag, waxay kordhin kartaa adkaanta ilaa HRC57 ~ 62. Waxay leeyihiin adkeysi wanaagsan, cimri adeeg oo ka dheer kan H, iyo codsiyo kala duwan.
Adkaanshaha H waa HRC60-68, noocan ah adkeysiga birta ayaa sarreeya, qaboojiyuhu aad buu u jajaban yahay, aad ayuu u fudud yahay in la jabiyo, cimrigiisu gaaban yahay, isticmaalku aad uma ballaarana. Inta badan waxaa loo isticmaalaa meelaha u baahan xoojinta daloolka sare.
Sidaa darteed, macaamiisha badankood waxay iibsadaan rasaas bir ah oo leh adkaysi P ah.
Sida ku cad tijaabada, waxaan ogaanay in tirada wareegyada birta ah ee lagu toogtay adkaanta P ay ka badan tahay tan adkaanta H, adkaanta H waa qiyaastii 2300 jeer, wareegga adkaanta P-na wuxuu gaari karaa 2600 jeer. Immisa wareeg ayaad tijaabisay?
Waqtiga boostada: Oktoobar-28-2024
