Kev txiav txim siab tseem ceeb thaum chav ua noj riam ntawm xaiv thiab yuav ob yam no -
—
Cov khoom siv hniav thiab siv kev nplij siab -
Kev txiav txim siab ntawm cov khoom siv tawv tawv feem ntau yog qhov siab dua qhov hardness ntawm cov hniav, qhov ntse dua.
Cov hniav ntawm cov khoom siv yog zoo hardness yog los ntawm siab mus rau qis kev txiav txim yog raws li nram no: hmoov hlau & gt;
VG10(
HRC58 -
62).
>
VG2 >
1.
4116 (ib.
HRC54-
58)
Thiab 50 crmov15 & gt;
40Cr13>
30Cr13 (
HRC48-
52)
.
Feem ntau, HRC (
Rockwell hardness)
Mus txog 60 + 2, twb tau nce mus rau qhov pib ntawm 'hnyav hlau'.
Txawm li cas los xij, qhov siab dua qhov hardness, yooj yim rau zom cov ntse, tab sis kuj muaj kev sib tw, xws li riam yog tsis ncaj ncees lawm siv yooj yim rau 'kawg';
Qhov qis hardness ntawm dao, zoo toughness, yooj yim rau 'ntug', tab sis siv rau lub sij hawm ntev feem ntau yuav tsum sharpen.
--------
Siv kev nplij siab hauv chav ua noj hauv Suav style, chop filling xws li siv ntev dua, yog tias tsis muaj riam tuav zoo, tsis tuaj yeem hu nws tias 'good dao', yog li kev xaiv ntawm tus kov yog qhov tseem ceeb heev.
Tus kov ntawm kev ua lag luam tam sim no muaj plaub hom loj ntawm ntau tshaj plaub qhov sib piv: 'hollow handle handle modeling can be changeable.
'Lub taub hau' steel kov yog hnyav, siv kev xav muaj zog.
'Plastic kov' siv kov rau lub sijhawm ntev yog qhov tsis zoo.
'Hood' yam tsis yog-plam yuav zoo dua me ntsis.
Pom zoo tus kheej sim, tom qab tag nrho, txhua tus neeg siv cov txheej txheem txiav sib txawv.
