Iimpawu ze-40cr 40cr injongo ephambili ye-40cr indlela yokufudumala unyango

1. Intshayelelo kwi-40cr: I-40Cr insimbi yintsimbi ephakathi kwekhabhoni edibeneyo. I-normalizing inokukhuthaza i-spheroidization yesakhiwo kunye nokuphucula ukusika ukusebenza yesithuba esingenanto kunye nobunzima obungaphantsi kwe-160HBS. Ukufudumeza kwiqondo lobushushu le-550 ~ 570 ℃, intsimbi inezona mpawu zibalaseleyo zoomatshini. Ukuqina kwale ntsimbi kuphezulu kunentsimbi ye-45, kwaye ifanelekile kunyango oluqinileyo olufana nokucima i-high-frequency quenching kunye nokucima umlilo.

Okwesibini, iimpawu ze-40cr: i-carbon medium quenched kunye nentsimbi epholileyo, i-heading die steel heading ebandayo. Intsimbi ixabisa ngokulinganayo kwaye kulula ukuyiqhuba. Emva kokunyanga okufanelekileyo kokushisa, iqondo elithile lokuqina, iplastiki kunye nokuxhatshazwa kokugqoka kunokufumaneka. Icandelo eliqhelekileyo likhuthaza i-spheroidization yesakhiwo kwaye ifanelekile kunyango lokuqina kwendawo efana nokucima i-high-frequency quenching kunye nokucima umlilo.

Okwesithathu, injongo ephambili ye-40cr: i-half shaft kunye neegesi, i-shafts, iimbungu, i-spline shafts, imikhono ephezulu kwizixhobo zomatshini, njl.; emva kokucima kunye nokutshisa kwiqondo lokushisa eliphakathi, isetyenziselwa ukuvelisa iindawo ezikwazi ukumelana nomthwalo ophezulu, impembelelo kunye nomsebenzi wesantya esiphakathi, njengeegiya, umkhono, shaft, shaft engundoqo, i-crankshaft, i-182 spindle, i-3666 pin, i-3769 intonga yokudibanisa, i-screw, i-nut, ivalve yokungena, njl. Ukongeza, olu hlobo lwentsimbi lufanelekile ukuvelisa iindawo ezahlukeneyo zothumelo ezithatha unyango lwe-carbonitriding, njengeegiya kunye neeshafti ezinobubanzi obukhulu kunye nokuqina okuhle kobushushu obuphantsi.

Isine, 40cr ukwakheka kweekhemikhali:

I-Carbon 0.37-0.45%, i-silicon 0.17-0.37%, i-manganese 0.5-0.8, i-chromium 0.8-1.1%

Ukuqina kwe-Anealing: ngaphantsi kwe-207HBS

Ubulukhuni obuqhelekileyo: ngaphantsi kwe-250HBS

Isihlanu, isimo sokuhanjiswa kwe-40cr: Isimo sokuhanjiswa kwe-40Cr sinikezelwa ngonyango lobushushu (oluqhelekileyo, olune-annealing okanye ubushushu obuphezulu) okanye ngaphandle konyango lobushushu. Ubume bokuhanjiswa kufuneka buboniswe kwikhontrakthi.

Isithandathu, unyango lobushushu lwe-40cr: ukucima kwi-850 ℃, ukupholisa ioli; ukutshisa kwi-520 ℃, ukupholisa amanzi, ukupholisa i-oyile. Umphezulu wokucima ubulukhuni be-40Cr yi-HRC52-60, kwaye ukucinywa kwedangatye kunokufikelela kwi-HRC48-55.