Masiku ano, tikuwona kuti zida zambiri zomangira zagwiritsa ntchito njerwa zosawotchedwa. Ndizosapeŵeka kuti njerwa zosawotchedwa zidzalowa m'malo mwa njerwa zofiira zachikhalidwe ndi ubwino wake wabwino komanso kuteteza chilengedwe. Tsopano msika wapakhomo wa makina opangira njerwa aulere ukugwira ntchito kwambiri. Anthu ambiri akufuna kuyika ndalama m'makampani awa. Apa ndikufotokozera mwachidule mavuto angapo a ndalama mu fakitale yamakina osayaka.

1. Kodi ndi zinthu ziti zotsika mtengo zopangira njerwa zosawotchedwa? Kodi zimasiyana bwanji ndi mtengo wa njerwa zadothi?

Ndipotu, zimatengera komwe muli. Ngati pali mafakitale mufakitale yanu omwe amatha kupanga phulusa la ntchentche, slag, mchenga, khumi, slag ndi zinyalala zina, si vuto. Zomwe zili zotsika mtengo komanso zochulukira kwambiri ndikugwiritsa ntchito zidazi kupanga njerwa zosapsa. Inde, zinthu zamayendedwe ziyenera kuganiziridwa. Poyerekeza ndi njerwa zadongo zakale, mtengo wopangira njerwa zosawotchedwa ndi wotsika poyerekeza ndi njerwa yadongo. Kuphatikiza apo, dziko lathu lili ndi mfundo zotsatsira. Chifukwa cha chitetezo cha chilengedwe cha njerwa zosawotcha, tapereka msonkho kwa mafakitale osawotcha. M'malo mwake, takhazikitsa thumba lokonzanso khoma panyumba zadothi kuti lipereke ndalama zothandizira mafakitale osawotcha. Kusiyana kwamitengo kwamtunduwu kumadziwonetsera nokha.

2. Kodi njerwa zosapsa ndi zamphamvu bwanji poyerekeza ndi njerwa zadothi? Nanga bwanji moyo wautumiki?

Njerwa zadongo nthawi zambiri zimakhala 75 mpaka 100, ndipo njerwa yosawotchedwa imapangidwa motsatira muyezo, mphamvu imaposa muyezo wadziko lonse, ndipo mphamvu yopondereza imatha kufika 35MPa. Tikudziwa kuti zinyalala zazikulu za njerwa zosawotchedwa ndi zinyalala zamafakitale monga phulusa la ntchentche ndi zina zotero. Zochita zawo zimachita mwamphamvu. Kashiamu silicate hydrate ndi calcium aluminate gel opangidwa panthawi yopanga amadzaza mipata, kumawonjezera kumamatira, komanso kukhala ndi nthawi yayitali, kukana dzimbiri komanso kukhazikika. Pankhani ya moyo wautumiki, kupyolera mu mayesero ambiri, zimatsimikiziridwa kuti mphamvu yamtsogolo ya njerwa yosawotchedwa idzakhala yamphamvu komanso yamphamvu, ndipo moyo wake wautumiki ndi wamphamvu kwambiri kuposa dongo.

3. Momwe mungasankhire zida zopangira ndalama mufakitale yosayaka njerwa?

Choyamba, kusankha zida kumadalira thumba lanu. Ndalama zomwe muli nazo ziyenera kukhazikitsidwa pa izi, ndipo ndithudi, ziyenera kukhazikitsidwa malinga ndi momwe msika ulili. Kuphatikiza apo, malinga ndi zomwe zidachitika m'mafakitale ena osawotcha njerwa ku China, zikuwoneka kuti nthawi zina sizikhala zazikulu zida, ndizomwe zimapangidwira bwino. M'malo mwake, nthawi zina zida zazing'ono zopangira zimatha kugwira ntchito zambiri. Izi zili choncho chifukwa pamene zida zazikulu zopangira makina zimagwiritsidwa ntchito popanga, ngati ulalo umodzi walephera, umatsekedwa kwathunthu; pamene zida zambiri zopangira zing'onozing'ono, ngati wina alephera, ena onse akhoza kupitiriza kupanga. Chifukwa chake, zimatengera momwe zida ziliri komanso momwe zida ziliri.

4. Momwe mungasankhire malo omangira fakitale yamakina osayaka?

Kusankhidwa kwa malo a fakitale ya makina a njerwa kuyenera kukhala pafupi ndi zinyalala zotsalira momwe zingathere, zomwe zingathe kupulumutsa kwambiri katundu wopangira katundu ndi katundu ndi katundu; sankhani malo okhala ndi madzi abwino ndi magetsi ndi zoyendera, kuti muthe kupanga ndi kugulitsa mwachangu; sankhani malo ozungulira kapena malo akutali ndi malo okhalamo momwe mungathere, kuti mupewe mikangano yosafunikira; lendi malo ochitirako msonkhano akale, malo kapena fakitale yowotcha njerwa yomwe yasiya kupanga Itha kuchepetsa mtengo wandalama.