Inama zo gusudira -Ni izihe ntambwe zo kuvura hydrogène

Kuvura Dehydrogenation, bizwi kandi nko kuvura ubushyuhe bwa dehydrogenation, cyangwa kuvura ubushyuhe nyuma ya weld.

Intego yo kuvura nyuma yubushyuhe bwahantu hasudutse ako kanya nyuma yo gusudira ni ukugabanya ubukana bwakarere ka weld, cyangwa gukuraho ibintu byangiza nka hydrogène muri zone ya weld.Ni muri urwo rwego, kuvura nyuma yubushyuhe no kuvura ubushyuhe nyuma yo gusudira bigira ingaruka zimwe.

Nyuma yo gusudira, ubushyuhe bugabanya ubukonje bwikidodo hamwe nigitereko gisudira kugirango habeho guhunga hydrogène no kwirinda kwiyongera.

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(2) Nyuma yubushyuhe kugirango wirinde ubushyuhe buke ni uguteza imbere gukuraho ingufu za hydrogène muri zone yo gusudira.

Gukuraho hydrogène biterwa nubushyuhe no gufata igihe cyo gushyuha.Ubushyuhe bugamije intego nyamukuru yo kurandura hydrogène muri rusange ni dogere 200-300, naho igihe cyo gushyuha ni 0.5-1.

Kubasudira mubihe bikurikira, kuvura hydrogène nyuma yubushyuhe bigomba gukorwa ako kanya nyuma yo gusudira (amanota 4):

(1) Umubyimba urenze 32mm, hamwe nibikoresho bisanzwe byerekana imbaraga σb> 540MPa;

(2) Ibikoresho by'icyuma giciriritse gifite uburebure burenze 38mm;

(3) Ikibuno gisudira hagati ya nozzle yashyizwemo nicyombo cyumuvuduko;

(4) Isuzuma ryuburyo bwo gusudira ryerekana ko hakenewe kuvurwa hydrogene.

Agaciro k'ubushyuhe bwa nyuma yubushyuhe bugaragazwa nuburyo bukurikira:

Tp ＝ 455.5 [Ceq] p － 111.4

Muri formula, Tp —— ubushyuhe nyuma yubushyuhe ℃;

[Ceq] p —— Inzira ya karubone ihwanye.

[Ceq] p = C + 0.2033Mn + 0.0473Cr + 0.1228Mo + 0.0292Ni + 0.0359Cu + 0.0792Si － 1.595P + 1.692S + 0.844V

Kugabanya ibirimo hydrogene muri zone weld ni imwe mu ngaruka zingenzi zo kuvura ubushyuhe nyuma.Nk’uko amakuru abitangaza, kuri 298K, inzira yo gukwirakwiza hydrogène iva mu cyuma gito cya karuboni ni amezi 1.5 kugeza 2.

Iyo ubushyuhe bwiyongereye kugera kuri 320K, iki gikorwa kirashobora kugabanywa kugeza ku minsi 2 kugeza kuri 3 nijoro, hanyuma nyuma yo gushyushya 470K, bifata amasaha 10 kugeza kuri 15.

Igikorwa nyamukuru cyo kuvura nyuma yubushyuhe na dehydrogenation ni ukurinda ko habaho imbeho ikonje mu cyuma gisudira cyangwa muri zone yibasiwe nubushyuhe.

Iyo gushyushya gusudira mbere yo gusudira bidahagije kugirango hirindwe ko habaho imbeho ikonje, nko mu gusudira ingingo zifatanije cyane hamwe n’ibyuma bigoye gusudira, inzira nyuma yubushyuhe igomba gukoreshwa kugirango hirindwe byimazeyo gushingwa. cy'imbeho ikonje.