Darajo:20 bir ah
Heerka:GB/T 699-1999

sifooyinka
Xoogaa wax yar ayuu ka sarreeyaa birta 15, marar dhif ah ayuu daminayaa, ma jirto xanaaq qabow qallafsanaan caag ah guud ahaan qalooca calendarka flanging iyo dubbe, sida alxanka qaansada iyo alxanka caabbinta waxqabadka alxanka wanaagsan, alxanka marka dhumucdiisu yar tahay, muuqaal adag ama qaabka qaybo kakan oo u nugul inay dillaacaan goynta xaaladda mishiinka ee qabow soo jiiday ama caadi ka dhigaysa xaalad baab'in wanaagsan guud ahaan loo isticmaalo soo saaridda xoog ma aha mid weyn oo adag
Birta waxaa iska leh birta kaarboon-kaarboon-yar oo tayo sare leh, birta qallafsan ee qabowga qaboojinta, birta waxay leedahay xoog hoose, adkeyd wanaagsan, balaastiig iyo weldability, xoogga xajinta ee 355-500mpa, heerka dhererka 24%
Caadiyan waxay kor u qaadi kartaa spheroidization ee birta, sifeyn kartaa block weyn ee proeutectoid ferrite, iyo hagaajinta waxqabadka goynta meelaha banaan in ka yar 160HBS
Jidka teknoolajiyada eebirQaybaha dhinta waa: foornada foornada bakhtiya mashiinnada qallafsan oo qallafsan mashiinnada qaboojiyaha qaboojinta dib-u-celinta dib-u-kicinta mishiinnada mashiinnada ganaaxa mashiinnada carburizing deminta xanaaqa shiididda golaha dhalaalka

ka kooban kiimiko
C: 0.17% ~ 0.24%
Si: 0.17% ~ 0.37%
Mn: 0.35% ~ 0.65%
S: 0.035%
P: 0.035%
C: 0.25%
Ni: 0.25%
Cu: 0.25
hantida farsamada
Xoog xajin B (MPa): ≥410(42)
Awood soo saarista S (MPa): ≥245(25)
Kordhinta 5 (%) : ≥25
Hoos u dhigista aagga (%) : 55 ama ka badan
Adag: kulayl aan la daweyn,≤156HB
Cabbirka Tusaalaha: Cabbirka Tusaalaha: 25mm

macluumaad kale

Tilmaamaha daaweynta kulaylka: caadiyeynta, 910 ℃, qaboojinta hawada.

Dhismaha Metallographic: ferrite + pearlite.
Daaweynta kulaylkaee birta 20 iyo deminta engegnaanta birta no.20:
Daawaynta kulaylka ee 20 birta: 20 birta, waa suurtogal in lagu gaadho adkaanta deminta caadiga ah ee 30-35HRC
1. Ka dib markii machining qallafsan, workpiece waxaa la deminay guud ahaan by daaweynta kulaylka (920 ℃ brine demisay), ka dibna baaraandegi.Due in shuruudaha qalafsanaan ee 30-35HRC, dhammaan geeddi-socodka waa in ay awoodaan si ay u baaraandegi, wax ka badan ganaax gudaha. iyo meel ka baxsan wareegga baabuurka, dayactirka jidka furaha.
2. Makiin qalafsan oo isku mid ah, deminta dusha dalool ee gudaha ama daminta miis kaliya oo daminaya dariiqa furaha (waxay kuxirantahay cabbirka shaqada), iyo ugu dambayntii la dhammeeyo.
3. Carburinta iyo deminta, shiida daloolka gudaha iyo dariiqa furaha.
Socodku waa kan labaad, saddexaad iyo inta badan.
● Xaaladda gaarsiinta: gaarsiinta xaalad aan lahayn kuleyl daawaynta ama kulaylka (wax-u-dhigid, caadi-yeelid ama heerkulka heerkulka sare) gaarsiinta xaaladda kuleylku waa in lagu tilmaamaa heshiiskaHaddii aan la tilmaamin, keenista waa in la sameeyaa iyada oo aan lahayndaaweynta kulaylka.