Tsanangudzo yeKuoma

Muchishandiso sainzi, kuomarara chiyero chekupokana kwenzvimbo yepurasitiki deformation inokonzereswa nemechani indentation kana abrasion. Kazhinji, zvinhu zvakasiyana zvakasiyana mukuoma kwavo; semuenzaniso, simbi dzakaoma dzakadai setitanium neberyllium dzakaoma kudarika simbi dzakapfava dzakadai sesodium nesimbi, kana huni nemapurasitiki akajairika. Kune zviyero zvakasiyana zvekuomarara: kukwenya kuomarara, kuomarara kwemukati, uye kuomarara kwekudzoka.

Mienzaniso yakajairika yechinhu chakaomarara ndeye ceramic, kongiri, mamwe masimbi, uye zvinhu zvakaomarara, izvo zvinogona kufananidzwa nechinhu chakapfava.

Marudzi makuru ekuyera kuyerwa

Kune marudzi matatu makuru ekuyera kuyerwa: kukwenya, kupinza, uye rebound. Mukati meimwe neimwe yeaya makirasi ekuyera, mune ega kuyerwa zviyero.

(1)Kukwenya kuoma

Scratch hardness ndiyo chiyero chekuti sample inoshingirira sei kutsemuka kana kugadzirwa kwepurasitiki zvachose nekuda kwekukweshana kubva pachinhu chakapinza. Chirevo ndechekuti chinhu chakagadzirwa nechinhu chakaoma chinokwenya chinhu chakapfava. Pakuyedza majasi, kuomarara kunoreva simba rinodiwa kucheka nemufirimu kusvika kune substrate. Muedzo wakajairika ndeyeMohs scale, iyo inoshandiswa mumineralogy. Chimwe chishandiso kuita kuyerwa uku i sclerometer.

Chimwe chishandiso chinoshandiswa kuita bvunzo idzi muhomwe yekuomarara tester. Chishandiso ichi chine chikero cheruoko chine mamakisi akapedza kudzidza akasungirirwa pangoro ine mavhiri mana. Chishandiso chekukwenya chine rimu chinopinza chakaiswa pakona yakafanotemerwa kunzvimbo yekuyedza. Kuti uishandise huremu hwehuremu hunozivikanwa hunowedzerwa kuruoko rwechikero pane chimwe chezvibodzwa zvakapedza dhigirii, uye chishandiso chinobva chadhirowa pamusoro pebvunzo. Iko kushandiswa kwehuremu uye mamaki inobvumira kudzvanywa kunozivikanwa kushandiswa pasina kudiwa kwemichina yakaoma.

(2)Identation kuoma

Indentation kuomarara kunoyera kuramba kwemuenzaniso kune deformation yezvinhu nekuda kwekugara kumanikidza mutoro kubva kune chinhu chakapinza. Miedzo yekuomesa indentation inonyanya kushandiswa muinjiniya uye simbi. Miedzo inoshanda padanho rekutanga rekuyera zviyero zvakakomba zve indentation inosiiwa neindenter ine dimensioni uye yakatakura.

Akajairwa indentation kuomarara zviyero ndeye Rockwell, Vickers, Shore, uye Brinell, pakati pevamwe.

(3)Rebound kuoma

Rebound kuomarara, kunozivikanwawo se dynamic hardness, inoyera kureba kwe "bounce" yesando ine muromo wedhaimani yakadonhedzwa kubva paurefu hwakamiswa ichienda pane chinhu. Rudzi urwu rwekuomarara rwakabatana nekusimba. Mudziyo wakashandiswa kutora kuyerwa uku unozivikanwa sestereoscope.

Zviyero zviviri zvinoyera kuomarara kweLeeb rebound kuomarara uye Bennett hurema hwekuomarara.

Iyo ultrasonic Kubata Impedance (UCI) nzira inosarudza kuoma nekuyera kuwanda kweiyo oscillating tsvimbo. Tsvimbo yacho ine shaft yesimbi ine chinhu chinozunguzika uye dhaimondi rakaita sepiramidi rakaiswa kune rimwe mugumo.

Vickers kuoma kwezvinhu zvakasarudzwa zvakaoma uye zvakanyanyisa

Dhaimondi ndiyo yakaomesesa inozivikanwa zvinhu kusvika parizvino, ine kuomarara kweVickers muhupamhi hwe70-150 GPa. Dhaimondi rinoratidza zvese zvakakwirira kupisa conductivity uye magetsi ekudzivirira zvivakwa, uye kutarisisa kwakanyanya kwakaiswa mukutsvaga zvinoshanda zvechinyorwa ichi.

Synthetic madhaimondi akagadzirwa nokuda kwezvinangwa zvemaindasitiri kubva kuma1950 uye anoshandiswa mumhando dzakasiyana-siyana dzekushandisa: telecommunications, laser optics, hutano hwehutano, kucheka, kukuya nekuchera, nezvimwewo.

Kana iwe uchifarira PDC cutters uye uchida rumwe ruzivo uye ruzivo, unogona KUTITA NEI runhare kana tsamba kuruboshwe, kana kuti TUMUMA MAIL pazasi pepeji.