Daga cikinbawuloli masu ɗaukar matsa lamba of bututun masana'antu, jefa karfe bawuloliana amfani da su sosai saboda tattalin arzikin farashin su da sassauƙar ƙira.Koyaya, saboda tsarin simintin yana iyakance ta girman, kaurin bango, yanayi, albarkatun ƙasa da ayyukan ginin simintin, lahani daban-daban na simintin kamar blisters, pores, fashe, raguwar porosity, raguwar cavities da haɗawa za su bayyana a cikin simintin. musamman yashi simintin gyare-gyare.Simintin ƙarfe don ƙarin.Saboda yawan abubuwan da ke haɗawa da ƙarfe a cikin ƙarfe, mafi ƙarancin ƙarancin narkakkar karfen, zai iya haifar da lahani.Sabili da haka, gano lahani da ƙirƙira wani tsari mai dacewa, mai tattalin arziki, mai amfani da abin dogaro don tabbatar da cewa bawul ɗin bayan waldawar gyare-gyaren ya dace da buƙatun ingancin ya zama abin damuwa na yau da kullun a cikin sarrafa zafi da sanyi nabawuloli.Wannan labarin yana gabatar da hanyar walda na gyare-gyare da kuma gogewar lahani na yau da kullun na simintin ƙarfe (sandan walda yana wakiltar tsohuwar alama).
Rashin kulawa
1. Rashin hukunci
A cikin aikin samarwa, wasu lahani na simintin gyaran kafa ba a yarda su gyara walda ba, kamar tsatsauran ratsa jiki, lahani masu shiga (shiga ƙasa), ramukan saƙar zuma, yashi wanda ba za a iya cirewa ba, da raguwar porosity mai yanki da ya wuce santimita 65, da sauransu. da sauran manyan lahani waɗanda ba za a iya gyara su ba kamar yadda aka yi yarjejeniya a cikin kwangilar tsakanin bangarorin biyu.Ya kamata a yi la'akari da nau'in lahani kafin gyara walda.
2. Cire lahani
A cikin masana'anta, gabaɗaya ana amfani da gogaggun iskar carbon don fitar da lahani, sa'an nan kuma ana amfani da injin niƙa mai ɗaukuwa don goge ɓangarori masu lahani don bayyanar da ƙarfe.Amma a aikin samarwa, ya fi amfani da carbon karfe electrode tare da babban halin yanzu don cire lahani, da amfani da injin niƙa don niƙa fitar da ƙarfe.Gabaɗaya, ana iya kawar da lahanin simintin ta amfani da lantarki <4mm-J422 da na yanzu na 160-180A don cire lahani.Maƙallin kwana yana niƙa lahani zuwa siffar U don rage damuwa walda.An cire lahani gaba ɗaya, kuma ingancin walda ɗin gyara yana da kyau.
3. Preheating na lahani sassa
Don carbon karfe da austenitic bakin karfe simintin gyaran kafa, inda yankin na gyara waldi part ne kasa da 65cm2 da zurfin ne kasa da 20% ko 25mm na kauri daga cikin simintin, preheating gaba ɗaya ba a bukata.Koyaya, don simintin ƙarfe na lu'u-lu'u irin su ZG15Cr1Mo1V da ZGCr5Mo, saboda tsananin ƙarfin ƙarfe da sauƙin fashewa a cikin walda mai sanyi, yakamata a yi preheating.Lokacin riƙewa yakamata ya zama aƙalla 60min.Idan simintin ba za a iya preheated gaba ɗaya ba, za a iya mai da shi zuwa 300-350 ° C tare da oxygen-acetylene a wurin lahani kuma a fadada shi da 20mm (lura da ja mai duhu a cikin duhu), da kuma babban harshen wuta mai tsaka tsaki. Ana amfani da bindiga da farko a lahani da wuraren da ke kewaye.Juya da'irar da sauri na 'yan mintoci kaɗan, sannan a motsa a hankali na tsawon mintuna 10 (ya danganta da kauri na lahani), ta yadda lahanin ya riga ya gama zafi sosai sannan a gyara shi da sauri.
Don ƙarin bayani, da fatan za a ziyarciwww.cvgvalves.com.Tuntuɓarsales@cvgvalves.com.