Raws li cov kev xav tau ntawm kev siv, qhov khoob ntawm qhov tho qhov ntsaws tuaj yeem ua los ntawm castings lossis forgings. Castings los yog forgings yuav tsum muaj lawv cov riser lossis flash txiav tawm thiab tau txais kev kho cua sov. Lub hardness yuav tsum tau tswj ntawm 170HBW thiab 280HBW, thiab qhov luaj li cas thiab sib txawv ntawm qhov dawb paug yuav tsum ua raws li cov kev cai ntawm daim duab dawb paug los yog cov ntaub ntawv txheej txheem.
Castings:
Cov xuab zeb residual, oxide daim tawv nqaij, cov nqaij ntshiv, thiab burrs ntawm castings yuav tsum tau muab tshem tawm kom huv si. Qhov saum npoo ntawm casting yog tso cai kom muaj:
a) Cov teeb meem ntawm qhov chaw ua haujlwm uas tuaj yeem raug tshem tawm tom qab ua tiav;
b) Lub cev nqaij daim tawv ntau dhau ntawm qhov uas tsis yog machined nto ntawm cov kab noj hniav uas nyuaj rau tshem tawm;
c) Qhov tob ntawm qhov tsis machined nto ntawm lub puab kab noj hniav ntawm lub casting yuav tsum tsis txhob ntau tshaj 1/8 ntawm phab ntsa thickness ntawm qhov chaw thiab yuav tsum tsis txhob ntau tshaj 5 hli. Txoj kab uas hla ntawm ib qho tsis xws luag yuav tsum tsis pub tshaj 10mm × Tsis pub ntau tshaj 2 qhov tsis xws luag hauv 100) mm2, nrog rau tag nrho cheeb tsam tsis pub tshaj 1.5% ntawm cheeb tsam.
Forgings:
1. Qhov tsis machined nto ntawm forging puab kab noj hniav yuav tsum du thiab tiaj tus, thiab cov duab thiab loj yuav tsum tau raws li qhov yuav tsum tau ntawm daim duab.
2. Forgings yuav tsum tsis txhob muaj overburning. Yog tias muaj qhov tsis xws luag hauv zos xws li tawg, folds, forging puas, thiab interlayers ntawm qhov chaw, cov kev kho mob hauv qab no yuav tsum tau ua:
a) Thaum qhov tob ntawm qhov tsis xws luag ntawm qhov chaw machining tsis pub tshaj 50% ntawm cov nyiaj machining ntawm ib sab, nws raug tso cai tsis txhob tshem tawm,
b) Cov kev puas tsuaj ntawm cov khoom siv tsis zoo, nws qhov tob yog nyob rau hauv qhov siab ntawm qhov ntev ntawm forging, raug tso cai kom tshem tawm thiab kho, thiab yuav tsum tau polished du tom qab kho.
