20 # urupapuro rushyushye

. Icyuma gifite imbaraga nke, gukomera, plastike no gusudira. Imbaraga zingana ni 253-500MPa, naho kurambura ni ≥24%.
Imiterere ya 20 isa cyane niy'ibyuma 15, ariko imbaraga ziri hejuru gato. Imikoreshereze: ibereye gukora ibice bito n'ibiciriritse bya karburizasi hamwe na karubone ya karubone idafite akamaro kanini mu kubaka amamodoka, romoruki n’inganda zikora imashini rusange, nk'inkweto za feri y'intoki, shitingi ya leveri, ibyuma byihuta byihuta, ibyuma byangiza na Camshafts kuri traktor, guhagarika ingero zingana, kuringaniza imbere ninyuma, nibindi.; ikoreshwa mugukora ibice bitandukanye byubukanishi bidahangayikishijwe ariko bisaba gukomera cyane mubihe bishyushye cyangwa bisanzwe; mu mashini ziremereye kandi ziciriritse zikora Hagati, nk'inkoni zahimbwe cyangwa zometseho, ingoyi, ingofero, amaboko, clamp, n'ibindi. gukorera mubitangazamakuru bitangirika hamwe nigitutu cya ≤6N / kare hamwe nubushyuhe bwa 50450 ℃; ikoreshwa mu gukora imisaraba kuri gari ya moshi, za lokomoteri n'ibinyabiziga Castings nk'imitwe na piston.
Ubusanzwe bushobora guteza imbere spheroidisation yicyuma, gutunganya ferrite nini ya proeutectoid, no kunoza imikorere yo guca munsi ya 160HBS.
Inzira yuburyo bwibice bipfa gupfa ni: gupfunyika → guhimba bipfa ubusa → annealing → imashini ikarishye → imashini ikonjesha → recrystallisation annealing → kurangiza imashini → carburizing → kuzimya, kurakara → gusya no gusya → guterana.
(2) Gutanga leta no gukomera Leta idashyushye, ubukana ≤156HBS.

Ibigize imiti ya JB / T 6057-92 ibyuma (igice kinini,%)

C.	Si	Mn	P.	S.	Ni	Cr	Cu
0.17~0.23	0.17~0.37	0.35~0.65	≤0.035	≤0.035	≤0.30	≤0.25	≤0.25

Ibikoresho bya mashini
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(6) Guhindura ibisobanuro Ubushyuhe ni 920 ~ 950 and, kandi itanura rirakonja. Gukomera ni 131 ~ 156HBS.
. hamwe n'itanura, kandi itanura rirakonja.
Gukomera mbere yo kuvurwa ni ≤143HBS, naho gukomera nyuma yo koroshya ni 131HBS.
(8) Kuzimya ibisobanuro Ubushyuhe 910 ℃ ± 10 ℃, gukonjesha hamwe na 10% ya NaCl.
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(11) Ubushyuhe bwa annealing ni dogere 600-650 gusa, naho igihe cyo gufata ni 1-2h.

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