Barta barafku ka mid ah steel

Ka hor inta aan ka hadlo steels, aynu qeexo macnaha jirka ah ee category ee heerkulka barafku. In berrinka sayniska iyo warshadaha fikrad this waxaa sidoo kale loo isticmaalaa sida heerkulka solidification. Macnaha jirka of this category tahay in ay tani muujinaysaa heerkulka at kaas oo ay qiimaha waa wax isbedel ah oo gobolka wadar ahaan labada lug ah walaxda, i.e. ay guurka ka dareere gobolka adag. In walax guurka heerkulka barta aad isku noqon karaa in la mid ah ama gobol kale. Marka aad codsanayso kulayl dheeraad ah shay ama walax noqdo gobolka oo ah dareere, iyo markii afduubka kulaylka - adkaynayaa. index waxaa loo arkaa mid ka mid ah kuwa ugu muhiimsan ee nidaamka ka mid ah guryaha jirka ah ee wax kasta, sidaas waxaa lagama maarmaan ah inay tixgeliyaan (tani waa muhiim gaar ah si ay u fahmaan marka loo eego birta), in heerkulka solidification waa tiro ahaan siman yihiin in ay heerkulka barafku kaliya ee kiiska marka aynu ka hadlayno walax si fiican u daahirsan.

Sida la og yahay ka manhajka, heerkulka barafku bir ah noocyada kala duwan ee Alloys ku kala duwan yihiin. Tani waxaa lagu go'aamiyaa dhismeedka daawaha qaybaha ay dastuurka, nooca habka wax soo saarka ee steel iyo arrimo kale oo ku.

Tusaale ahaan, heerkulka xaabo bir, oo ka kooban daawaha copper-nickel ah wuxuu ku saabsan yahay 1150 ° C. Haddii aynu nahay in sida daawaha ah in la kordhiyo content nickel ah, heerkulka kici doonaa, maxaa yeelay, dhibic barafku ee nickel ah waa ka sii badan in of copper. Guud ahaan, taas oo ku xidhan Halabuurka kiimikada ee daawaha iyo ratio ka mid ah qaybaha la joogo dhexdeeda noqon heerkulka xaabo uu noqon karaa inta u dhaxaysa 1420-1525 ° C, haddii ay sida ay noqon bir ah ku ridaya si ay u sameeyaan habka wax soo saarka bir ah, heerkulka loo baahan yahay in la hayo xitaa at 100-150 degrees kor ku xusan. factor muhiim ah in saamaysaa heerkulka barafku waa heerka ugu of content carbon in daawaha. Haddii ay ka kooban tahay, Waa wax sare, heerkulka noqon doonaa hoose iyo, siday u kala horreeyaan, qeybsanaan - iyadoo hoos u heer-kulka cadadka carbon kordhay.

adag A dheeraad ah marka la eego go'aaminta qiimaha habka a heerkulka cabbirka barafku in steels ahama. Sababta tani waa ay Halabuurka kiimikada adag. Tusaale ahaan, steel 1X18H9 magac caadi ahaan loo isticmaalo in ilkaha iyo injineernimada korontada, ka kooban yihiin, marka laga reebo birta, xataa carbon, nickel, chromium, manganese, titanium iyo Silicon. Dabcan, heerkulka barafku ka mid ah ku ahama of Halabuurka this lagu go'aamin doonaa by sifooyinka qayb kasta oo ka mid ah waxa ku jira. Laga soo bilaabo ilkaha sida daawaha bir ah soo saaray, taaj, ilkaha sanaaciga ah noocyo kala duwan, iyo qaybaha kale ee korontada. Waxaa suurto gal ah si ay u siiyaan liiska qaar ka mid ah guryaha ku hantiyeen by this ahama, heerkulka barafku ay of 1460-1500 ° C, sidaas darteed, ku salaysan dhimaya iyo Halabuurka kiimikada ee daawaha loo isticmaalo, kabida gaar ah ay ku solders lacag ah.

Mid ka mid ah farsmada heerka sare ah ee wax soo saarka oo casri ah noocyada kala duwan ee Alloys ugu waa bir, oo ay ku jiraan in ay ka kooban xubno titanium. Tan waxa u sabab xaqiiqda ah in ay noqdaan dad ku dhowaad gebi ahaanba bayoloji inert, iyo barta barafku ka mid ah birta ku salaysan titanium - mid ka mid ah meelaha ugu sarreeya.

steels intooda badan ku jira bir ah in ay ka kooban sida qayb ka ugu weyn. Tan waxa u sabab ma ahan oo keliya in ay xaqiiqada ah in biraha this - mid ka mid ah ugu baahsan ee deegaanka, iyo xaqiiqda ah in birta waa element shiidaa universal soo saarka ee fasalada kala duwan ee birta iyo Alloys kaas oo lagu daro. Tani ballaadhkiisuna codsiga ay sabab u tahay xaqiiqda ah in heerka of heerkulka barafku ka mid ah biraha, si siman u 1539 degrees, isku dhafan oo guryaha kale ee kiimikada gaar ah ka dhigaysa qayb birta ku haboon tiro balaadhan oo ah fasalada steel ujeedooyin kala duwan.