Ni ubuhe buryo bwa hydrogène muri Bolts n'imigozi?

2026-05-28

Intangiriro

Hydrogen embrittlement (HE) nimwe mubintu bikomeye ariko bikunze kwirengagizwa muburyo bwo kunanirwa muburyo bukomeye, Bolt, screw, nuts, nibindi bifata. Itera kuvunika gitunguranye, gucikamo ibice bitesha umutwe - ndetse no mumitwaro iri munsi yubushobozi bwihuse. Gusobanukirwa HE ni ingenzi kubashakashatsi, amatsinda yamasoko, hamwe nabayobozi bashinzwe ubuziranenge bashingira kumutwe wiziritse mugusaba gusaba.

Amashanyarazi ya Hydrogen ni iki?

Amazi ya hydrogène abaho iyo hydrogène ya atome yinjiye mu cyuma cya bolt cyangwa screw. Atome ya hydrogène ikwirakwira mu mbago z’ibyuma, bigabanya guhindagurika no gukomera. Igisubizo: kwihuta bisa neza ariko birashobora gucika nta nteguza munsi yumutwaro urambye.

Amakuru y'ingenzi

Ifata ibyuma bikomeye cyane (ibyuma 8.8, 10.9, 12.9 no hejuru) cyane
Irashobora kubaho mugihe amashanyarazi, gutoragura, gusukura aside, cyangwa guhura nibidukikije byangirika
Mubisanzwe bigaragarira mumasaha kugeza kumunsi nyuma yo guterana - bakunze kwita gutinda gutinda
Ntabwo usize ibimenyetso bigaragara byo kuburira mbere yo gutsindwa gutunguranye

Isoko Rusange ya Hydrogen muri Fasteners

Inzira	Urwego	Inyandiko
Amashanyarazi (zinc, nikel)	Hejuru	Hydrogen ikorerwa hejuru ya cathode
Kuramo aside / kumanuka	Hejuru	Kumara igihe kirekire acide itwara H mubyuma
Kuzenguruka hafi yiziritse	Hagati	Gusudira arc kurekura hydrogen
Ibidukikije byangiza ibidukikije	Hagati	H2S, ubushuhe bwihuta kwinjiza
Dacromet / Geomet	Hasi	Bishingiye ku mazi, nta ruhare rwa hydrogène

Icyitonderwa: Dacromet hamwe nubuhanga bushingiye kumazi bushingiye kumazi birasabwa cyane nka hydrogène-itavamo ubusa ubundi buryo bwo gukoresha amashanyarazi gakondo kumashanyarazi akomeye hamwe na hex.

Ni izihe nzitizi zifitemo ibyago byinshi?

Imbaraga zikomeye cyane (M8-M36, icyiciro 10.9 / 12.9)
Imyubakire yubatswe ikoreshwa mubiraro, imashini ziremereye, niminara yumuyaga
Flange bolts hamwe na sock head cap screws ya torque-ikomeye
Umuyoboro wose wihuta ufite ubukana> = 32 HRC

Imbaraga nkeya hamwe na bolts (urwego 4.8 / 6.8) mubisanzwe ntabwo byoroshye cyane kubera guhindagurika kwinshi.

Nigute wakwirinda hydrogène

1. Hitamo uburyo bwiza bwo kuvura

Irinde amashanyarazi kumashanyarazi akomeye. Hitamo kuri:

Ipfunyika ya Dacromet - ibyago bya hydrogène zero, kurwanya ruswa nziza (480-1000 + amasaha yumunyu)
Ububiko bwa Geomet / Luxubao - RoHS-yujuje, nta chromium ihari
Ashyushye cyane - ikwiranye na bolts yubatswe munsi yicyiciro 8.8

2. Gutekesha nyuma yo gushiraho (De-embrittlement)

Niba amashanyarazi adashobora kwirindwa, kotsa ibyuma kuri dogere 190-220 C mumasaha 8-24 mugihe cyamasaha 4 yo gufata kugirango wirukane hydrogene yafashwe. Ibi birasabwa kuri ASTM F1941 na ISO 4042.

3. Kugaragaza Ibipimo

Iyo ushakishije Bolt na screw, reference:

ASTM F606 - igeragezwa ryibikoresho byo hanze bifatanye
ISO 15330 - HE yipimisha kuri bolts na screw
ASTM B633 / F1941 - ibipimo byerekana ibyangombwa bisabwa na HE

4. Kugenzura Umuhengeri

Kurenza-torquing byihutisha gutangira muri HE-byoroshye. Koresha Calibrated torque wrenches hanyuma ukurikize ibyakozwe nababikoze.

Nigute Wamenya Kunanirwa kwa Hydrogen

Ubuvanganzo: Uburyo bwo kuvunika hagati ya SEM (v.
Ikizamini cyimitwaro irambye: Kuri ISO 15330 - shyira 75% umutwaro wibimenyetso mumasaha 48, genzura ibice
Ikizamini cya buhoro buhoro (SSRT): Ikizamini cya laboratoire kugirango ugereranye indangagaciro ya HE

Incamake

Ikintu	Ibisobanuro
Byinshi byiziritse	Imbaraga zikomeye za bolts & screw (urwego 10.9, 12.9)
Impamvu y'ibanze	Kwinjiza hydrogène mugihe cyo gufata cyangwa kuvura aside
Ubwoko bwo kunanirwa	Gutinda kuvunika kuvunika munsi yumutwaro urambye
Gukumira neza	Dacromet / Geomete yububiko cyangwa nyuma yo gushiraho isahani yo guteka
Ibipimo ngenderwaho	ISO 15330, ASTM F1941, ASTM F606

Hydrogen embrittlement nuburyo bwakumirwa. Kugaragaza neza uburyo bwo kuvura neza - cyane cyane Dacromet yubatswe na bolts hamwe na shitingi ya Luxubao - nuburyo bworoshye, buhenze cyane bwo gukuraho ibyago bya HE mumateraniro ikomeye.