ASTM A490 da ASTM A325 Bolts

Dukansu ASTM A490 da ASTM A325 Bolts suna da tsarin hex mai nauyikusoshiShin kun san bambanci tsakanin ASTM A490 da ASTM A325? A yau, bari mu yi magana a kai.

Amsar mai sauƙi ita ce ƙusoshin ASTM A490 masu nauyi masu ƙarfi suna da ƙarfi mafi girma fiye da ƙusoshin hexagon masu nauyi masu nauyi na A325. ƙusoshin A325 suna da ƙarfin 120ksi mafi ƙanƙanta, yayin da ƙusoshin A490 suna da ƙarfin 150-173ksi.

Baya ga wannan, akwai wasu bambance-bambance tsakanin A490 da A325.

Tsarin Kayan Aiki

• An yi ƙusoshin tsarin A325 ne da ƙarfe mai ƙarfi mai matsakaicin carbon, kuma ƙusoshin da aka fi samu a ginin gine-gine
• An yi ƙusoshin tsarin A490 daga ƙarfe mai ƙarfi mai zafi.
• Ana iya amfani da ƙusoshin tsarin A325tsoma mai zafi da galvanizedkuma ana samun su da wannan rufin. Ƙullun galvanized na A325 suna shahara saboda halayensu masu jure tsatsa.
• Ƙwallon tsarin A490 sun fi ƙarfi, ba za a iya tsoma su cikin ruwan zafi ba saboda wannan ƙarfin. Saboda ƙarfin tururin A490 mai yawa, suna fuskantar haɗarin rugujewar hydrogen saboda galvanization. Wannan na iya haifar da gazawar ƙullin da wuri kuma yana iya zama mara ƙarfi a tsarin.

Rufi

Saita

Dukansu ƙusoshin A3125 da A325 suna ƙarƙashin ƙa'idar ASTM F490 kuma ana amfani da su musamman don ƙusoshin tsari. Yawanci, ƙusoshin tsari ƙusoshin hex masu nauyi ne ko ƙusoshin sarrafa tashin hankali waɗanda yawanci sun fi guntu a tsayi, sun fi guntu fiye da matsakaicin zare, kuma ba za su iya rage diamita na jiki ba.

A bisa ga al'ada, an yarda da wasu keɓancewa. Kafin 2016, ASTM A325 da ASTM A490 takamaiman bayanai ne daban-daban. Tun daga lokacin an sake rarraba su a matsayin azuzuwan a cikin ƙayyadaddun F3125. Da farko, ƙusoshin A325 da A490 dole ne su kasance suna da kan hex mai nauyi kuma ba a yarda da wasu tsare-tsare ba. Bugu da ƙari, ba za a iya canza gajeren tsawon zare ba.

Duk da haka, bisa ga sabon ƙa'idar F3125, an yarda da kowane salon kai kuma ana iya canza tsawon zare. Ana ƙayyade canje-canje ga daidaitattun tsare-tsaren A325 da A490 ta hanyar ƙara "S" zuwa alamar gangara ta dindindin don kai.

Wani bambanci a tsawon zare shine cewa ana samar da ƙusoshin A325 da yawa a cikin sigar zare mai cikakken zare, muddin suna da diamita huɗu ko ƙasa da haka a tsayi. Wannan nau'in ƙusoshin ana kiransa da A325T. Sigar zare mai cikakken zare ta wannan ƙusoshin A490 ba ta samuwa ga ƙusoshin A325 ba.

Gwaji

Ana buƙatar a gwada ƙarfin juyawar ƙusoshin A325 waɗanda ake saya da na'urar wanki mai goro da tauri. Gwajin ƙarfin juyawa yana tabbatar da cewa haɗin ƙusoshin yana da ikon haɓaka ƙarfin mannewa mai kyau. Domin cin nasarar gwajin, haɗin dole ne ya kai ƙaramin adadin juyawa kuma ya cimma matsin lamba da ake buƙata kafin ya faɗi wanda ya dogara da diamita da tsawon ƙusoshin A325 masu galvanized. Tunda ba za a iya haɗa ƙusoshin A490 ba, wannan gwajin ba ya aiki.

Dole ne dukkan ƙusoshin A490 su wuce gwajin ƙwayar maganadisu. Ana amfani da wannan gwajin don tabbatar da cewa babu lahani ko tsagewa a ƙarƙashin saman ƙarfe na ƙusoshin A490. Ba a buƙatar wannan gwajin ga ƙusoshin A325 ba.

ASTM A490

Layin Ƙasa

A ƙarshe, injiniyan ku zai ƙayyade matakin ƙullin tsarin F3125 da kuke buƙatar amfani da shi, amma yana da mahimmanci a fahimci bambanci tsakanin ma'aunin A325 da A490. Ma'aunin A490 ya fi ƙarfin ma'aunin A325, amma ƙarfi ba shine kawai abin da ke ƙayyade ƙullin ba. Ba za a iya tsoma ƙullin A490 cikin zafi ko kuma a haɗa shi da injin ba. Ma'aunin A325 ba shi da ƙarfi kamar haka, amma ƙullin ne mai rahusa wanda za a iya haɗa shi don guje wa tsatsa.