700 × 300 H mtengo Q235B ndi Q345B mtengo, ndimayika zitsulo za Universal Column
1. Malangizo osavuta:
H-beam ndi mtundu wagawo lazachuma komanso gawo lochita bwino kwambiri lomwe lili ndi gawo logawa bwino kwambiri
kuchuluka kwamphamvu kwa kulemera. Amatchulidwa ndi gawo lake ndi chilembo cha Chingerezi "H". Popeza zigawo zonse za
ma H-beam amasanjidwa pa ngodya zolondola, mtengo wa H uli ndi maubwino opindika mwamphamvu, kumangidwa kosavuta,
kupulumutsa mtengo ndi kulemera pang'ono m'mbali zonse, ndipo wakhala akugwiritsidwa ntchito kwambiri.
2. Chemical Composition
| Gulu | Kupanga Kwamankhwala (%) | ||||
| C | Si | Mn | P | S | |
| Q235B | ≤0.20 | ≤0.35 | ≤1.40 | ≤0.045 | ≤0.045 |
| Q345B | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.035 |
| Q345C | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.030 |
| Q345D | ≤0.18 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.025 |
3. Katundu Wamakina
| Gulu | Mechanical Property | ||
| Mphamvu Zokolola (N/mm2)/(Mpa) | Kulimba Kwamphamvu (N/mm2)/(Mpa) | Kutalika (%) | |
| Q235B | ≥235 | 370-500 | ≥26 |
| Q345B | 345 | 470-630 | ≥20 |
| Q345C | 345 | 470-630 | ≥21 |
| Q345D | 345 | 470-630 | ≥21 |
4. Chiwonetsero chazithunzi:
5. Chithandizo china:
6. Mtengo Wapamwamba Wowotcherera H:
High-frequency current imagwiritsidwa ntchito kutenthetsa zitsulo pamalopo, ndipo imawotchedwa ndi mphamvu yakunja, popanda
waya aliyense kuwotcherera kapena flux, ndipo akhoza mosalekeza kupangidwa mu zedi lalikulu.
1) Mitundu yosiyanasiyana (kukula kwa gawo). Kutalika, ukonde, makulidwe a flange ndi m'lifupi mwa flange akhoza kusankhidwa malinga ndi kasitomala
zofunika kuwotcherera mbale zitsulo. Itha kugwiritsidwa ntchito ngati mitundu ina kusiyana ndi muyezo wa H-mtengo wotentha wotentha.
2) Sankhani mitundu yosiyanasiyana yazitsulo. Mitengo ya H-yotentha kwambiri imakhala Q235B ndi Q345B. Pamene magulu ang'onoang'ono a magulu apadera achitsulo ali
chofunika, chopangacho sichingathe kuzipanga. Kuwotcherera amatha kusankha mbale yachitsulo ngati pakufunika.
3) Zogulitsazo zimakhala ndi zolondola kwambiri komanso zapamwamba kwambiri. Chifukwa cha kulondola kwapamwamba komanso mawonekedwe abwino amtundu wazitsulo zazitsulo,
H kulondola pambuyo kuwotcherera ndikwapamwamba komanso mawonekedwe apamwamba ndi abwino. Kupatuka kwa makulidwe a mbale zachitsulo (zogwiritsidwa ntchito powotcherera matabwa a H)
nthawi zambiri imakhala gawo limodzi mwa magawo khumi a millimeter kufika pa magawo khumi a millimeter, pamene kupatuka kwa makulidwe a ma H-mitengo yotentha ndi gawo limodzi mwa magawo khumi a
milimita mpaka 1 millimeter, yomwe ili pafupifupi nthawi 10 kusiyana kwake.
4) Kuchita kokhazikika komanso kukonza bwino mkati. Popeza kupanga zitsulo mbale ku smelting mosalekeza kuponyera kuti anagubuduza ndi
apamwamba kuposa otentha-anagulung'undisa H-matabwa ) zizindikiro ndi odalirika ndi okhazikika.
5) Ndikosavuta kukhala ndi zovuta zowotcherera. Ngakhale pali zabwino zambiri zomwe zatchulidwa pamwambapa, chifukwa cha kuwotcherera kupanga, pali zotsalira zotsalira
Kupsinjika kwamafuta m'dera lakuwotcherera, kapangidwe kawotchererako kamakhala kosiyana, ndipo pali kupsinjika kwamapangidwe, komwe kumakonda kuwonongeka kwa kuwotcherera.
Ndi mosalekeza kusintha kwa kuwotcherera mlingo ndi kutentha mlingo mankhwala, kuipa pang'onopang'ono kuchepetsedwa. Today, apamwamba welded
H-miyala yakhala ikugwiritsidwa ntchito m'magawo osiyanasiyana kuphatikiza mafakitale ankhondo ndi zakuthambo.
