Q235 lalikulu chubu ndi apamwamba ndi mtengo wotsika
Q235 welded square pipe ndi dzina la chitoliro cha square, ndiko kuti, chitoliro chachitsulo chokhala ndi mbali yofanana. Amapangidwa ndi chitsulo chogudubuza pogwiritsa ntchito njira zamakono. Nthawi zambiri, chitsulo chamzere chimatsegulidwa, chophwanyika, chopiringizika ndi chowotcherera kuti chipange chitoliro chozungulira, ndiyeno chitoliro chozungulira chimakulungidwa kuti chiyang'ane chitoliro cha Q235 chowotcherera, ndikudula mpaka kutalika kofunikira. Yachibadwa ndi zidutswa 50 pa phukusi. Mphamvu imatanthawuza ntchito ya Q235 welded square chubu kukana chiwonongeko (moyenera kupunduka pulasitiki kapena fracture) pansi pa katundu static. Chifukwa zochita mitundu ya katundu monga mavuto, contraction, mozungulira, kukameta ubweya ndi zina zotero, chifukwa mphamvu imagawidwanso mu mphamvu kumakanika, compressive mphamvu, flexural mphamvu, kukameta ubweya mphamvu ndi zina zotero. Nthawi zambiri pamakhala kugwirizana kotsimikizika pakati pa mphamvu zosiyanasiyana. Pakugwiritsa ntchito bwino, kulimba kwamphamvu ndiye gawo lofunikira kwambiri lamphamvu. Mphamvu zimatsutsana ndi mphamvu ya chiwonongeko, yomwe imatchedwa kulimba kwa mkuntho.
Katundu pazigawo zomwe zikupita patsogolo kwambiri zimatchedwa charge and trap load. Mphamvu, pulasitiki ndi ngodya zomwe zafotokozedwa pambuyo pake ndi zizindikiro zamakina a Q215 welded square pipe pansi pa katundu wosasunthika. M'zochita, makina ambiri amakina ali ndi katundu wobwerezabwereza, ndipo mwayi wonsewo watopa m'malo awa. Kutopa kolowera ndi singano yoyezera kulemera kwa data yofewa komanso yolimba yachitsulo. M'zaka zaposachedwa, njira yodziwira makona yamkati yomwe sagwiritsidwa ntchito kwambiri ndi makina osindikizira. Amagwiritsa ntchito indenter ndi nambala inayake ndi mawonekedwe kuti akanikizire pamwamba pa data ya Q235 welded square chubu pansi pa katundu wina, ndipo mkati mwake amatsimikiza mtengo wake wa ngodya molingana ndi atolankhani pamlingo. Njira zomwe zimagwiritsidwa ntchito kwambiri ndi Brinell angle (HB), Rockwell angle (HRA, HRB, HRC) ndi Vickers angle (HV). Angular plasticity amatanthauza mphamvu ya mapindikidwe a pulasitiki (mapindikidwe okhazikika) popanda kuwononga zida zachitsulo zomwe zimanyamula. Pulasitiki Q215 welded square chubu yosakhala yamtundu wamba yopanda msoko imatulutsidwa kuchokera ku chubu chozungulira chopanda msoko. Kusiyanitsa pakati pa seamless ndi welded square chubu ndi weniweni. Ndi mtundu wa chubu lalikulu (makona amakona). Mzimu wa zipangizo zambiri ukhoza kupanga thupi la chubu lalikulu (makona amakona). Njira yake ndi, chifukwa chake komanso komwe imagwiritsidwa ntchito. Machubu ambiri a Q215 okhala ndi sikweya ndi machubu achitsulo, machubu ambiri omangika, machubu opaka njereza, machubu akulu akulu (machubu amakona anayi), ndi zina zambiri.
The yopapatiza akusowekapo wa welded lalikulu chitoliro akhoza kupanga welded chitoliro ndi lalikulu chitoliro awiri, ndi akusowekapo ndi m'lifupi chomwecho akhoza kutulutsa welded chitoliro ndi awiri chitoliro osiyana. Komabe, poyerekeza ndi chitoliro chowongoka chamsokonezo chokhala ndi kutalika komweko, kutalika kwa weld kumawonjezeka ndi 30 ~ 100%, ndipo liwiro lopanga ndilotsika.
Mapaipi apakati okhala ndi mainchesi akulu kapena okhuthala nthawi zambiri amapangidwa ndi chitsulo chopanda kanthu mwachindunji, pomwe mapaipi ang'onoang'ono owotcherera ndi mipope yopyapyala amangofunika kuwotcherera mwachindunji kudzera mumzere wachitsulo. Ndiye mutatha kupukuta kosavuta, kujambula kwa waya kuli bwino. Chifukwa chake, kuwotcherera kwa msoko wowongoka kumagwiritsidwa ntchito kwambiri pamapaipi ang'onoang'ono okhala ndi m'mimba mwake, ndipo kuwotcherera kozungulira kumagwiritsidwa ntchito kwambiri pamapaipi akulu akulu akulu.
Zipangizo zodziwika bwino zamapaipi a welded square ndi awa: Q235A, Q235C, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00cr19ni11, 1Cr18Ni9, etc.
Welded zosapanga dzimbiri chitoliro chokongoletsera (GB / T 18705-2002), zitsulo zosapanga dzimbiri welded chitoliro chokongoletsera nyumba (JG / T 3030-1995), lalikulu m'mimba mwake welded zitsulo chitoliro kwa otsika kuthamanga madzimadzi kufala (GB / T 3091-2001), ndi welded zitsulo chitoliro cha exchanger kutentha (yb4103-2000).
