I-ASTM ikhiphe indinganiso entsha ngo-2015 (ngemuva kokukhishwa kwe-ASTM Volume 01.08 ka-2015) ehlanganisa amazinga ayisithupha amanje okubopha amabhawodi ngaphansi kokucaciswa kwesambulela esisodwa. Izinga elisha, i-ASTM F3125, linesihloko esithi “Ukucaciswa Kwamabhawodi Amandla Aphezulu Amandla, Insimbi Nengxubevange Yensimbi, I-Heat Treated, 120 ksi (830 MPa) kanye ne-150 ksi (1040 MPa) Amandla Okuqina Okuncane, Intshi kanye Nobukhulu Bemetric” futhi ihlanganisa ukulandela amazinga akhona:
• I-ASTM A325 ne-ASTM A325M, imininingwane yamabhawodi esakhiwo aphethwe ukushisa ensimbi;
• I-ASTM A490 kanye ne-ASTM A490M, imininingwane yamabhawodi esakhiwo anengxubevange yensimbi afakwe ukushisa; futhi
• I-ASTM F1852 kanye ne-ASTM F2280, imininingwane yokuhlanganiswa kohlobo lwe-“twist off” yebhawodi/inati/iwasha (izincazelo zethu zibhekisela kulokhu njengokuthi “A325 Tru Tension” kanye “ne-A490 Tru Tension”, ngokulandelana)
Lokhu kuhlanganiswa kulungise ukuhluka okuningi okuncane phakathi kwamazinga ayisithupha futhi kwavumela ukuqondanisa okuphelele. Lokhu kuzovumela ukuguqulwa okuzayo ukuthi kwenziwe kuwo wonke ama-bolting amabanga futhi kuzohlinzeka ngephuzu elilodwa lokubhekisela ekuhlanganiseni kwesakhiwo.
Kunezinguquko ezimbalwa zangempela kumabhawodi enziwe kumazinga angawodwana noma amabanga ku-ASTM F3125 entsha; kodwa lezi yizinto ezingathakazelisa kakhulu:
• Amabhawodi e-A325 amakhulu kuno-1” ububanzi ngeke esaba namandla aphansi okushutheka nobulukhuni (wonke amabhawodi e-A325 azoba izinga lamandla eliphansi elingu-120 KSI uma kuqhathaniswa no-105 KSI ubuncane >1” ububanzi).
• Asikho isidingo sokuhlola okujikelezayo samabhawodi angu-A325 athathiwe emzimbeni wezinga (kuneSijobelelo ku-F3125 sokuhlola umthamo wokujikeleza wesitayela se-FHWA).
• Isibonelelo sokudlula singeziwe kumantongomane asetshenziswa namabhawodi anamathiselwe kumasistimu kapende we-F1136/F1136M noma F2833 (Zinc/Aluminium)
Kwengezwe ithuba lokusebenzisa amabanga anobukhulu obuhlukahlukene (njengamajometri ekhanda ashintshiwe noma ubude bochungechunge olukhethekile) ngokucela Imfuneko Eyengeziwe S2 kanye nokwengeza u-“S” ekupheleni kwebanga (njengokuthi “A325S” noma “A490S”).
Sizoshintsha izincazelo zethu ukuze zifake ireferensi ye-ASTM F3125 ekukhiqizeni okusha. Sicela uzizwe ukhululekile ukusithinta uma unemibuzo noma ungathanda olunye ulwazi. Ngiyabonga
Isikhathi sokuthumela: May-23-2017