Mazano Ekushandisa Cast Steel Zvikamu muRail Transit

Kusarudzwa kweZvinhu uye Zvinhu Zvigadzirwa
Rail transit cast steel components kunyanya zvinosanganisira grey cast iron (seHT200, HT250, HT300) uye ductile cast iron (seQT450, QT500, QT600, QT700). Nekuda kwekunaka kwayo kupfeka kuramba uye kudiki deformation, ductile cast iron iri kuwedzera kushandiswa mumamiriro emhando yepamusoro zvinodiwa.

Yakakwirira-simbi yakakandwa yakasimba (yakaita seHT200-300) inowanzova nekuoma kwepamusoro kweHB170-240. Mushure mekugadzira annealing (600-700 dhigirii) uye kuchembera kwechisikigo (2-3 makore), inogona kuvimbisa kugadzikana kwakaringana uye kupfeka kuramba.

Kuisa Techniques uye Precision Control
Kuiswa kwesimbi yakakandwa pasi njanji (seT-slot ground rails) kunofanirwa kutevedza nzira dzakasimba kuti tive nechokwadi.

Nheyo Kurapa uye Kugadziriswa: Iyo njanji yepasi inofanirwa kunamatira zvakanyanya pasi kudzivirira kubhenda deformation pasi pemutoro unokonzerwa nemapundu. Paunenge uchigadzirisa, M8 iron yekuwedzera mabhoti kana kupfurwa zvipikiri zvinogona kuchengetedzwa zvakachengetedzeka panguva dze500-700mm padivi remukati renjanji.

Leveling and Grouting: Shandisa {{0}shaped bridge plates and a spirit level to first level one ground rail sereferensi, wozoita magadzirirwo ekutanga achitevedzana. Mushure mezvo, ita simende grouting, uye ita kugadzirisa kwakanaka uye kuongorora mushure mekurapa.

Precision Standards: Mushure mekuiswa, kutsauka kwakatwasuka mukati mehurefu hwe1m hakufanirwe kudarika 1mm, uye kureba kwese kutsauka hakufanirwe kudarika 2mm; kutsauka kwakatwasuka pamapoinzi anoenderana pakati penjanji hakufanirwe kudarika 1mm, uye parallelism kutsauka pakati pezvipi zvese njanji kunofanirwa kunge kuri pasi pe2mm.

Kudzika Kudzika: Kudzika kwakadzamirwa kwenjanji yepasi kunofanirwa kunge kwakaenzana kana kuti zvishoma 3-5mm yakakwirira kupfuura iyo yekushongedza kwepasi.