Lalacewar tsarin jujjuyawar ƙarfe na gargajiya

The gargajiya karfe mirgina tsari shi ne cewa an jera guraben karfen ana sanyaya su, a kai su injin da ake birgima, sannan a dumama a cikin tanderun dumama domin a narkar da su zuwa karfe. Wannan tsari yana da lahani guda biyu:

1. Bayan da aka zaro billet daga simintin ƙarfe mai ci gaba da yin, zafin jiki akan gadon sanyaya shine 700-900 ° C, kuma ba a amfani da latent zafin billet ɗin yadda ya kamata.

2. Bayan ci gaba da simintin simintin gyare-gyare yana dumama ta tanderun dumama, saman billet ɗin zai yi asarar kusan 1.5% saboda iskar oxygen.

Binciken fa’idar ceton makamashi:

1. Amfani da gawayi na asali na dumama tanderun dumama tsarin billet shine 80 kg / ton na karfe (ƙimar calorific 6400 kcal / kg), wanda yayi daidai da 72 kg na daidaitaccen kwal; bayan fasahar fasaha, tsarin amfani da makamashi shine 38 kWh kowace ton na karfe, wanda yayi daidai da 13.3 kg Standard kwal.

2. Dangane da kiyasin samar da samfuran karfe na ton 600,000 na shekara-shekara, tanadi na shekara-shekara na daidaitaccen kwal shine: (72-13.3) ÷ 1000 × 600,000 ton = 35,220 ton na daidaitaccen kwal.

3. Ka’idar ceton makamashi:

Bayan da aka zaro billet daga na’ura mai ci gaba da yin simintin, saman yana da zafin jiki na 750-850, kuma zafin ciki ya kai 950-1000 ° C. Ɗaya daga cikin mahimman ƙa’idodin dumama shigar da shi shine tasirin fata, wanda shine cewa ƙarfin zafi yana canzawa a hankali daga dumama saman. A sama, kashi ɗaya bisa uku na ciki na billet baya buƙatar dumama. Dangane da nau’ikan nau’ikan billet daban-daban, zaɓi mitoci daban-daban don samun ingantaccen aikin dumama.

4. Wuraren adana makamashi:

a) Matsakaicin yawan amfani da makamashi na dumama shigar da wutar lantarki na iya zama sama da 65 zuwa 75%, yayin da tanderun dumama na gargajiya ya kasance kawai 25 zuwa 30%.

b) Rashin iskar shaka na induction dumama billet shine kawai 0.5%, yayin da tanderun haɓakawa zai iya kaiwa 1.5-2%.