Karkataccen kabu submerged arc welded karfe bututu ana hakowa a juyawa da kuma fara shigar da taushi samuwar.A ƙarƙashin aikin tri-cone, rawar farko ta fara haifar da nakasar ƙanƙara mai ƙarfi na stratum sannan kuma an cire shi ƙarƙashin matsi na mazugi uku.A cikin yanayin da aka kwaikwayi, ƙasa mai laushi yumbu ne mai kama da juna, ba tare da la'akari da ɓarna da tsagewar ƙasa ba.Ana aiwatar da hakowa ta hanyar kai tsaye a cikin samuwar ba zato ba tsammani, kuma samuwar tana cikin bazuwar tuntuɓar mazugi tare da bit ɗin mazugi.Gogayya yana faruwa lokacin da mazugi ke hulɗa da ƙasa.Ƙarfin tasiri yana haifar da kabu mai ruɗi da bututun ƙarfe welded don girgiza.Lokacin da bit-mazugi ya motsa daga sassauƙa mai laushi zuwa ga samuwar wuya, babu makawa zai haifar da babban jijjiga ta gefe da sama da ƙasa girgizar.

Lokacin da saurin hakowa ya kasance 0.008m/s kuma saurin jujjuyawar bit shine 2 radians/s, madaidaicin madaurin kuzari yayin ci gaba da aiwatar da mazugi na abin nadi ya haɗa da danko da elasticity.Duk da haka, tun da kalmar danko yakan mamaye, canjin yawancin makamashin zuwa makamashin da ba zai iya jurewa ba.Karkataccen makamashi na karkace kabu submerged arc welded karfe bututu shi ne babban makamashi cinyewa don sarrafa nakasar da hourglass.Idan maƙarƙashiyar ƙima ta yi yawa, yana nufin cewa ƙarfin ƙarfin da ke sarrafa nakasar sa'a ya yi girma sosai, kuma ragamar ya kamata a tace ko gyara.Don rage yawan kuzarin ɓacin rai.Canjin kuzarin kwatsam na ƙyalli a cikin wannan ƙirar yakan faru ne lokacin da ɗigon rawar soja ya shiga cikin ƙasa mai laushi kuma ɗan mazugi ya ratsa ta hanyar mu'amalar samuwar canjin kwatsam.Mafi girman taurin samuwar, mafi girman ƙarfin daɗaɗɗen ƙirƙira na rawar soja a cikin samuwar.Kwatanta tsarin hakowa na bututu mai waldadi a cikin samuwar ba zato ba tsammani kuma a yi hasashen canjin yanayin hakowa.