1. Simbi yakadzima uye yakapfava
Kuedza kuomarara kwesimbi yakadzima uye yakanyoroveswa kunonyanya kushandisa chikero cheHRC cheRockwell hardness tester. Kana chinhu chacho chakatetepa uye chikero cheHRC chisina kukodzera, chikero cheHRA chinogona kushandiswa panzvimbo pacho. Kana chinhu chacho chakatetepa, chikero chehardness chekumusoro cheRockwell HR15N, HR30N, kana HR45N chinogona kushandiswa.
2. Simbi yakaoma pamusoro
Mukugadzirwa kwemaindasitiri, dzimwe nguva chikamu chepakati chebasa chinodiwa kuti chive chakasimba, nepo pamusoro pacho pachinodiwawo kuti pave nekuomarara kwakanyanya uye kuramba kupfeka. Muchiitiko ichi, high-frequency quenching, chemical carburization, nitriding, carbonitriding nedzimwe nzira dzinoshandiswa kuita kurapwa kwekuomarara kwepanzvimbo pabasa. Ukobvu hwechikamu chekuomarara kwepanzvimbo hunowanzova pakati pemamilimita mashoma nemamilimita mashoma. Kune zvinhu zvine zvikamu zvekuomarara kwepanzvimbo, zviyero zveHRC zvinogona kushandiswa kuyedza kuomarara kwazvo. Kune simbi dzekuomarara kwepanzvimbo dzine ukobvu hwepakati, zviyero zveHRD kana HRA zvinogona kushandiswa. Kune zvikamu zvekuomarara kwepanzvimbo, zviyero zvekuomarara zveRockwell pamusoro HR15N, HR30N, uye HR45N zvinofanirwa kushandiswa. Kune zvikamu zvakaonda zvepanzvimbo dzakaoma, muyedzi weMicro Vickers kana muyedzi we ultrasonic hardness zvinofanirwa kushandiswa.
3. Simbi yakasanganiswa, simbi yakajairika, simbi yakapfava
Zvinhu zvakawanda zvesimbi zvinogadzirwa zviri mumamiriro akabatanidzwa kana kuti akajairwa, uye mamwe mapurati esimbi anotonhorera anoongororwawo zvichienderana nemazinga akasiyana ekupinza. Kuyedzwa kwekuoma kwesimbi dzakasiyana-siyana dzinobatanidzwa kunowanzo shandisa zviyero zveHRB, uye dzimwe nguva zviyero zveHRF zvinoshandiswawo pamapurati akapfava uye akatetepa. Kune mapurati matete, Rockwell hardness testers HR15T, HR30T, uye HR45T scales dzinofanira kushandiswa.
4. Simbi isina ngura
Zvinhu zvesimbi isina ngura zvinowanzo pihwa munzvimbo dzakadai se annealing, quenching, tempering, uye solid solution. Mitemo yenyika inotsanangura kukosha kwekuomarara kwepamusoro nepazasi, uye kuyedzwa kwekuomarara kunowanzo shandiswa Rockwell hardness tester HRC kana HRB scales. HRB scale inofanira kushandiswa pa austenitic ne ferritic stainless steel, HRC ye Rockwell hardness tester inofanira kushandiswa pa martensite ne precipitation hardening stainless steel, uye HRN scale kana HRT ye Rockwell hardness tester inofanira kushandiswa pa machubhu esimbi isina ngura ane madziro matete uye zvinhu zvemapepa zvine ukobvu husingasviki 1 ~ 2mm.
5. Simbi yakagadzirwa
Brinell hardness test inowanzo shandiswa pakugadzira simbi yakagadzirwa, nekuti chimiro chesimbi yakagadzirwa hachina kufanana zvakakwana, uye Brinell hardness test indentation yakakura. Saka, Brinell hardness test inogona kuratidza mhedzisiro yakazara yechimiro chesimbi uye hunhu hwezvikamu zvese zvechinhu chacho.
6. Simbi yakakandwa
Zvinhu zvesimbi zvakakandwa zvinowanzoonekwa nechimiro chisina kuenzana uye tsanga dzakakora, saka bvunzo yekuomarara kweBrinell inowanzo shandiswa. Muyedzo wekuomarara weRockwell unogona kushandiswa pakuyedza kuomarara kwemamwe maworkpiece esimbi akakandwa. Kana pasina nzvimbo yakakwana pachikamu chidiki chemugero wakakora weBrinell hardness test, chiyero cheHRB kana HRC chinogona kushandiswa kuyedza kuomarara, asi zviri nani kushandisa chiyero cheHRE kana HRK, nekuti zviyero zveHRE neHRK zvinoshandisa mabhora esimbi ane dhayamita ye3.175mm, ayo anogona kuwana avhareji iri nani pane mabhora esimbi ane dhayamita ye1.588mm.
Zvinhu zvakaoma zvinonyungudika zvesimbi zvinowanzoshandisa Rockwell hardness tester HRC. Kana zvinhu zvisina kuenzana, data rakawanda rinogona kuyerwa uye avhareji yemutengo inotorwa.
7. Sintered carbide (yakaoma alloy)
Kuyedzwa kwekuomarara kwezvinhu zvakaoma kunowanzo shandiswa chete neRockwell hardness tester HRA scale.
8. Upfu
Nguva yekutumira: Chikumi-02-2023
