Precautions for the operation of coreless ng’anjo yotentha for conventional foundry

The following precautions are well-known to melters and foundries, and are common knowledge not only for coreless induction furnaces but also for all metal smelting operations. This is just for general knowledge and does not involve all types of operations. These matters should be explained clearly and appropriately expanded or perfected by a specific operator.

Ntchito yosungunula ndi kusungunula iyenera kuperekedwa kwa ogwira ntchito omwe ali ndi ziphaso zoyenerera, kapena ogwira ntchito oyenerera pa maphunziro a fakitale ndi kuunika, kapena ogwira ntchito motsogozedwa ndi akatswiri odziwa ntchito zauinjiniya ndiukadaulo mufakitale.

Ogwira ntchito pamalopo nthawi zonse azivala magalasi otetezera chitetezo okhala ndi mafelemu oteteza, komanso kugwiritsa ntchito zosefera zapadera powona zitsulo zotentha kwambiri.

4. Ogwira ntchito pafupi ndi motowo kapena pafupi ndi motowo ayenera kuvala maovololo oletsa kutentha komanso osagwira moto. Zovala zopangidwa ndi mankhwala (nayiloni, poliyesitala, ndi zina zotero) siziyenera kuvala pafupi ndi moto.

5. Chophimba cha ng’anjo chiyenera kufufuzidwa kawirikawiri panthawi zina kuti apewe “kutopa”. Pambuyo kuzirala, yang’anani ng’anjo ya ng’anjo. Pamene makulidwe a ng’anjo ya ng’anjo (kupatula bolodi la asibesitosi) ndi osachepera 65mm-80mm mutavala, ng’anjoyo iyenera kukonzedwa.

6. Kuwonjezera zipangizo ziyenera kusamala kupewa “milatho” ya zipangizo. Kutentha kwakukulu kwazitsulo kumbali zonse ziwiri za “milatho” kudzachititsa kuti ng’anjo ya ng’anjo iwonongeke.

7. Ng’anjo yatsopano ya coreless induction iyenera kupangidwa ndi zipangizo zoyenera, zoyenera kuti zitsulo zisungunuke, ndikuwumitsidwa kwathunthu musanawonjezere zipangizo zosungunula. The zinthu sintering malamulo ayenera mosamalitsa kutsatira nkhaniyi.

8. Zida zotsika kwambiri zosungunuka monga aluminiyamu ndi zinki ziyenera kuwonjezeredwa mosamala ku zakumwa zotentha kwambiri monga zitsulo. Ngati zowonjezera zosungunuka zimira zisanasungunuke, zimawira mwamphamvu ndikupangitsa kusefukira kapena kuphulika. Samalani makamaka powonjezera galvanized tubular charge.

9. Mtengowo uyenera kukhala wouma, wopanda zinthu zoyaka moto, osati wa dzimbiri kwambiri kapena wonyowa. Kutentha kwamphamvu kwamadzi kapena zoyaka zomwe zimayaka pamoto zimatha kupangitsa chitsulo chosungunuka kusefukira kapena kuphulika.

10. Mitsuko ya quartz yosunthika ingagwiritsidwe ntchito pamene ng’anjo zonse zachitsulo ndi zopanda pake zili ndi kukula koyenera. Sanapangidwe kuti azisungunuka kutentha kwazitsulo zachitsulo. Mawu a wopanga ayenera kukhala kalozera wogwiritsa ntchito crucible.

11. Pamene zitsulo zimatumizidwa ku crucible, mbali ndi pansi pa crucible ziyenera kuthandizidwa ndi bracket. Thandizo liyenera kuyesetsa kuteteza crucible kuti isatuluke panthawi yoponya.

12. Chidziwitso choyenera cha smelting chemistry chiyenera kumveka. Mwachitsanzo, kusintha kwamankhwala monga kuwira kwamphamvu kwa kaboni kumatha kuwononga zida ndikuvulaza munthu. Kutentha kwa njira yowotchera sikuyenera kupitirira mtengo wofunikira: Ngati kutentha kwachitsulo chosungunula kuli kwakukulu kwambiri, moyo wa ng’anjoyo udzachepetsedwa kwambiri, chifukwa zotsatirazi zidzachitika mu ng’anjo ya asidi: SiO2 + 2 (C) [Si] +2CO Izi zimafika ku 1500 ℃ muchitsulo chosungunula Zomwe zili pamwambazi zinapitirira mofulumira kwambiri, ndipo panthawi imodzimodziyo mapangidwe a chitsulo chosungunula anasinthanso, chinthu cha carbon chinatenthedwa, ndipo silicon yowonjezera inakula.

13. Malo olandirira ayenera kukhala ndi voliyumu yopanda madzi. Kukhudzana ndi zitsulo zotentha ndi zamadzimadzi kungayambitse kuphulika kwamphamvu ndikuvulaza munthu. Zotsalira zina zingalepheretse zitsulo zosungunuka kuyenda mu thanki yosefukira kapena kuyatsa moto.

14. Tanki yosefukira iyenera kukhala yokonzeka kulandira chitsulo chosungunula nthawi iliyonse pamene ng’anjo ya coreless induction ikugwira ntchito. Kutaya kumatha kuwoneka popanda chenjezo. Nthawi yomweyo, ngati ng’anjo ya coreless induction iyenera kukhuthulidwa posachedwa ndipo mbiya (ladle) si yoyenera, ng’anjo yopanda chitsulo imatha kutayidwa mu thanki yosefukira.

15 Ogwira ntchito onse amene amaika ziwalo, malonjezo, mbale kapena zina zotere ayenera kukhala kutali ndi ng’anjo yamoto yopanda maziko. Mphamvu ya maginito yomwe ili pafupi ndi chipangizocho imatha kupangitsa kuti pakhale chitsulo chilichonse. Anthu omwe ali ndi mtima pacemakers ali pachiwopsezo kwambiri ndipo ayenera kukhala kutali ndi ng’anjo iliyonse yopanda chitsulo.