Qhov kom zoo dua ntawm cov pa roj pa loj loj yog kev ua haujlwm siab, txuag kev ua haujlwm, thiab nws cov kev ua haujlwm zoo yog ob peb zaug ntawm kev siv rauj. Lwm qhov zoo dua yog tias cov txheej txheem kev ua tau zoo yog qhov zoo, yog li cov ntsia hlau loj loj tau siv rau hauv kev kho kom zoo nkauj thiab rooj tog tsim kom ua tiav cov qauv tsim.
T-shaped khoom ua los ntawm 45 # hlau me me. Ib qho kawg muaj lub taub hau tiaj tus, lwm qhov kawg yog ntse, tus ntsia thawv txoj kab uas hla ntawm 2.2￠, yog glued ua ke, feem ntau plays lub luag hauj lwm kho kom zoo nkauj txuas, kuj siv tau los dai cov khoom, siv ST64.
Cov phom pneumatic yog siv los hloov cov ntsia hlau ntsia hlau nrog rauj. Cov pa roj carbon ntsiab lus ntawm cov ntsia hlau kab hlau yog 0.4 ~ 2.8%, uas yog siab dua li cov ntsia hlau kab hlau. Muaj 8 hom hlau ntsia hlau: ST-18, ST-25, ST-32, ST-38, ST-45, ST-50, ST -57
ST -64
Cov duab ntawm cov hlau kab staples, zoo li cov staples peb siv, yog qhov tseem ceeb hauv kev kho kom zoo nkauj, vim nws yuav tsum tau ua haujlwm zoo heev. Nrog rau kev loj hlob sai ntawm vaj tse thiab kho kom zoo nkauj kev lag luam, kev thov rau cov ntsia hlau steel hauv kev ua lag luam yog nce xyoo los ntawm xyoo
Tom ntej no, txoj kev loj hlob muaj peev xwm ntawm cov ntsia hlau steel yog loj heev, cov ntsia hlau yuav tsum tau thauj mus rau hauv cov ntsia hlau ntsia hlau siv, feem ntau yog siv hauv engineering, tawv, kho kom zoo nkauj hauv tsev, rooj tog tsim khoom, ntim khoom, khau crafts thiab lwm yam lag luam.
