Boleng ba Hardness Of Tungsten Steel Tool Kapa Alloy Milling Tool

Ho thatafala ke bokhoni ba thepa ho hanela lintho tse thata tse hatellang holim'a eona. Ke e 'ngoe ea lipontšo tsa bohlokoa tsa ts'ebetso ea lisebelisoa tsa tšepe.

Ka kakaretso, ha boima bo le holimo, ho molemo hore ho be le khanyetso ea ho apara. Li-index tsa hardness tse sebelisoang hangata ke Brinell hardness, Rockwell hardness le Vickers hardness.

Brinell hardness (HB)

Tobetsa bolo ea tšepe e thata ea boholo bo itseng (ka kakaretso 10 mm bophara) ka holim'a thepa e nang le mojaro o itseng (ka kakaretso 3000 kg), 'me u e boloke nako e itseng. Ka mor'a ho laolla, karo-karolelano ea mojaro sebakeng sa ho indentation ke nomoro ea boima ba Brinell (HB), 'me unit ke matla a kilogram / mm2 (n / mm2).

2. Rockwell hardness (HR)

Ha HB> 450 kapa sampole e le nyane haholo, ho metha boima ba Rockwell ho ka se sebelisoe sebakeng sa tlhahlobo ea boima ba Brinell. Ke khoune ea daemane e nang le ntlha e ka holimo ea likhato tse 120 kapa bolo ea tšepe e nang le bophara ba 1.59 le 3.18 mm. E hatelloa ka holim'a thepa tlas'a mojaro o itseng, 'me boima ba thepa bo baloa ho tloha botebong ba ho indentation. Ho ea ka boima bo fapaneng ba lisebelisoa tsa tlhahlobo, e ka hlahisoa ka litekanyo tse tharo tse fapaneng:

450 kapa sampole e le nyane haholo, ho metha boima ba Rockwell ho ka se sebelisoe sebakeng sa tlhahlobo ea boima ba Brinell. Ke khoune ea daemane e nang le ntlha e ka holimo ea likhato tse 120 kapa bolo ea tšepe e nang le bophara ba 1.59 le 3.18 mm. E hatelloa ka holim'a thepa tlas'a mojaro o itseng, 'me boima ba thepa bo baloa ho tloha botebong ba ho indentation. Ho ea ka boima bo fapaneng ba lisebelisoa tsa tlhahlobo, e ka hlahisoa ka litekanyo tse tharo tse fapaneng:

HRA: Ho thatafala ho fumanoang ka boima ba lik'hilograma tse 60 le indenter ea cone ea daemane e sebelisetsoa thepa e thata haholo (e kang carbide e entsoeng ka samente).

HRB: Ho thatafala ho fumanoang ka ho thatafatsa bolo ea tšepe ka bophara ba 1.58 mm le boima ba lik'hilograma tse 100. E sebelisoa bakeng sa lisebelisoa tse nang le boima bo tlaase.(joaloka tšepe e kentsoeng, tšepe e entsoeng ka tšepe, joalo-joalo).

HRC: Ho thatafala ho fumanoang ke boima ba lik'hilograma tse 150 le indenter ea cone ea daemane e sebelisetsoa lisebelisoa tse nang le boima bo phahameng (joalo ka tšepe e tingoeng).

3. Vickers hardness (HV)