Nzira nhatu dzekukanda Mapombi eSimbi

Mapombi esimbi anokandwa akagadzirwa nenzira dzakasiyana siyana dzekukanda nekufamba kwenguva. Ngationgororei nzira nhatu huru:

1. Horizontally Cast: Mapaipi esimbi ekutanga akaumbwa akachinjika, nepakati peforoma yakatsigirwa netwusimbi twakazova chikamu chepombi. Zvisinei, nzira iyi yaiwanzokonzera kusaenzana kwesimbi kutenderedza pombi denderedzwa, zvichiita kuti zvikamu zvisina simba, kunyanya pakorona apo slag yaiwanzounganidza.
2. Vertical Cast: Muna 1845, shanduko yakaitika yakananga kukanda kwakatwasuka, uko mapaipi akakandwa mugomba. Pakupera kwezana ramakore rechi 19, nzira iyi yakava tsika yenguva dzose. Ne vertical casting, slag yakaunganidzwa pamusoro pekukanda, ichibvumira kubviswa nyore nekucheka kuguma kwepombi. Nekudaro, mapaipi aigadzirwa nenzira iyi dzimwe nguva aitambura kubva kune-yepakati bores nekuda kwepakati peiyo mold yakamira zvisina kuenzana.
3. Centrifugally Cast: Centrifugal casting, yakatangwa naDimitri Sensaud deLavaud muna 1918, yakashandura kugadzirwa kwepombi dzesimbi. Iyi nzira inosanganisira kutenderedza mold nekumhanya kukuru apo simbi yakanyungudutswa inounzwa, zvichibvumira kugovera simbi yakafanana. Nhoroondo, marudzi maviri emhando akashandiswa: simbi yesimbi uye jecha.

• Metal Molds: Mukuita uku, simbi yakanyungudutswa yakapinzwa muforoma, iyo yakarukwa kuti simbi iparadzirwe zvakaenzana. Metal molds aiwanzo kuchengetedzwa nekugeza nemvura kana spray system. Mushure mekutonhodzwa, mapaipi ainyudzwa kuti abvise kushushikana, kuongororwa, kuvharwa, uye kuchengetwa.

• Kuumbwa kwejecha: Nzira mbiri dzakashandiswa pakukanda jecha. Yekutanga yaisanganisira kushandisa peteni yesimbi mufurasiki yakazara nejecha rekuumba. Yechipiri nzira yakashandiswa furasiki inopisa yakavharwa neresin nejecha, ichigadzira mold centrifugally. Mushure mekuoma, mapaipi aitonhodzwa, kunyungudutswa, kuongororwa, uye kugadzirirwa kushandiswa.

Nzira dzese dzekukanda simbi nejecha dzakateedzera zviyero zvakatarwa nemasangano akaita seAmerican Water Works Association yemapombi ekuparadzira mvura.

Muchidimbu, nepo nzira dzekukanda dzakachinjika uye dzakatwasuka dzaive nezvadzisingakwanisi, kukanda kwecentrifugal kwave nzira inosarudzika yekugadzirwa kwemazuva ano kwepombi yesimbi, kuve nechokwadi chekufanana, kusimba, uye kuvimbika.