1.How hardness graded raws li Suav cov qauv?
Mos: Haum rau kev sib sib zog nqus stamping.
Qib hwm: Qib softest, nrog qhov zoo tshaj plaws sib sib zog nqus- kos duab kev ua tau zoo, haum rau qhov chaw nrog cov duab tsis tshua muaj.
Semi-mos: nruab nrab ntawm qhov muag thiab qhov tawv tsis tshua muaj zog, nws muaj lub zog tshwj xeeb thiab khaws cia qee qhov ntawm moldability.
Tsawg hardness: Tau los ntawm lub teeb txias dov, nws muaj zog dua li lub xeev annealed thiab yog siv rau molded qhov chaw uas yuav tsum tau ib tug tej yam lub zog.
2.Dab tsi yog qhov hardness ntawm annealed nto?
Hom softest. Siv rau kev sib sib zog nqus heev - cov txheej txheem kos duab, xws li tsheb roj lauj kaub thiab tshuab ntxhua khaub ncaws sab hauv.
3.Dab tsi yog qhov hardness ntawm tus qauv tempered nto?
Cov no feem ntau pom 2B du lossis 2D matte tiav cov khoom. Lawv yog siv rau feem ntau stamping qhov chaw, xws li cov khoom vaj tse thiab cov yam ntxwv zoo tib yam.
4.Yuav xaiv li cas?
Yog tias koj xav tau thwj cov ntawv hlau rau hauv cov duab nyuaj (xws li lub tsheb lub cev lub cev), koj yuav tsum xaiv annealed (Qib A) lossis mos (Qib R) steel. Yog tias nws tsuas yog siv los ua cov ntawv tiaj tus lossis tsuas yog yuav tsum tau khoov yooj yim thiab muaj zog, koj tuaj yeem xaiv 1/4 nyuaj (Qib 4) lossis qib nyuaj.
5.Dab tsi yog txoj kev tshawb nrhiav?
Rau cov ntawv nyias, Rockwell hardness (HRB) lossis Vickers hardness (HV) feem ntau yog siv los kuaj. Thaum cov ntawv tuab dhau lawm (piv txwv li, tsawg dua 0.6 hli), kev ntsuas tensile yuav tsis raug, ua rau kev sim hardness ib txoj kev txhim khu kev qha.