Za naše večinoma HSS svedre so na voljo različne obdelave, kot so kovaštvo, robno brušenje in rezkanje.
Naj te vrste predstavimo na naslednji način:
1.Roll Forged: the high speed steel is stretched and twisted according to a certain extent in the heating and softening and then roll forged the flute.
Na primer: celotno dolžino 70 mm je mogoče raztegniti na 100 mm. Tako lahko postopek kovanega zvitka prihrani materiale in ima nizke stroške. In blago
Are very cheap.
2. Edge Ground: it is to fine finish the goods on the basis of roll forged and make the shank diameter more precious. So the goods are more easy to drill holes
In tudi obeti so videti boljši kot prej.
3.Milled: the high speed steel is milled the flute by the milling cutter. Because the material is not stretched or twisted, so the run-out of goods made by milled is more precise than the goods made by roll forged. At the same time, the milled process takes the semi-automatic machine, so it needs people to control the machine,
In to poveča stroške. Na splošno se postopek rezkanja uporablja za velike svedre.
4. Popolnoma brušena je še en postopek za izdelavo svedrov. Kot vemo, se na splošno uporablja postopek mletja
the large size(>13 mm)svedrov. Torej za svedre normalne velikosti (manj kot ali enak 13 mm) vzamemo popolnoma brušen postopek.
The fully ground process takes the automatic machine. And the high speed steel is grinding the flute by the emery cutter.
Zato je zelo učinkovit in ima zelo stabilno kakovost.
