Khoom siv ntawm no forged ib feem:
14CrNi3MoV (921D), haum rau steel forgings nrog lub thickness tsis pub tshaj 130mm siv nyob rau hauv ships.
Kev tsim khoom:
Lub forged steel yuav tsum tau smelted siv hluav taws xob rauv thiab hluav taws xob slag remelting txoj kev, los yog lwm yam kev pom zoo los ntawm qhov kev thov sab. Cov hlau yuav tsum tau ua kom txaus deoxidation thiab cov txheej txheem ua kom zoo. Thaum forging lub ingot ncaj qha mus rau hauv ib tug forged ib feem, forging piv ntawm lub ntsiab lub cev ntawm ib feem yuav tsum tsis muaj tsawg tshaj li 3.0. Qhov sib piv ntawm qhov sib npaug ntawm qhov chaw tiaj tus, flanges, thiab lwm qhov txuas ntxiv ntawm qhov forged yuav tsum tsis pub tsawg dua 1.5. Thaum forging lub billet rau hauv forged ib feem, forging piv ntawm lub ntsiab lub cev ntawm ib feem yuav tsum tsis muaj tsawg tshaj li 1.5, thiab forging ratio ntawm protruding qhov chaw yuav tsum tsis muaj tsawg tshaj li 1.3. Forged qhov chaw ua los ntawm ingots los yog forged billets yuav tsum tau ua kom txaus dehydrogenation thiab annealing kev kho mob. Vuam ntawm steel billets siv los tsim forged qhov chaw tsis raug tso cai.
Delivery condition:
Qhov forged yuav tsum tau muab xa mus rau hauv lub xeev quenched thiab tempered tom qab normalizing ua ntej kev kho mob. Cov txheej txheem pom zoo yog (890-910) ° C normalizing + (860-880) ° C quenching + (620-630) ° C tempering. Yog hais tias lub thickness ntawm forged feem ntau tshaj 130 hli, nws yuav tsum tau tempering tom qab ntxhib machining. Tempered forged qhov chaw yuav tsum tsis txhob muaj kev ntxhov siab nyem annealing yam tsis muaj kev tso cai los ntawm kev thov sab.
Mechanical zog:
Tom qab tempering kev kho mob, txhua yam khoom ntawm forged ib feem yuav tsum ua raws li cov specifications. Yam tsawg kawg ntawm qhov ntsuas kub ntawm -20 ° C, -40 ° C, -60 ° C, -80 ° C, thiab -100 ° C yuav tsum tau ua, thiab ua tiav qhov cuam tshuam rau lub zog-kub nkhaus yuav tsum tau npaj.
Non-metallic inclusions thiab grain loj:
Forged qhov chaw ua los ntawm ingots yuav tsum muaj ib tug grain loj ntsuam xyuas tsis coarser tshaj 5.0. Qib A hom kev suav nrog hauv cov hlau yuav tsum tsis pub tshaj 1.5, thiab qib R hom kev suav nrog yuav tsum tsis pub tshaj 2.5, nrog rau qhov sib npaug ntawm ob qho tib si tsis tshaj 3.5.
Nto zoo:
Forged qhov chaw yuav tsum tsis txhob muaj qhov pom qhov tsis xws luag xws li cov kab nrib pleb, folds, shrinkage kab noj hniav, nti, los yog txawv teb chaws uas tsis yog-metallic inclusions. Cov kev puas tsuaj ntawm qhov chaw tuaj yeem kho tau siv cov scraping, chiseling, sib tsoo nrog lub log sib tsoo, los yog cov txheej txheem machining, kom muaj nyiaj txaus rau kev ua tiav tom qab kho.
Post lub sij hawm: Nov-24-2023
