1. Karfe mai kauri da kuma mai laushi
Gwajin tauri na ƙarfe mai kauri da zafi galibi yana amfani da sikelin HRC na gwajin tauri na Rockwell. Idan kayan siriri ne kuma sikelin HRC bai dace ba, ana iya amfani da sikelin HRA maimakon haka. Idan kayan sun fi siriri, ana iya amfani da sikelin tauri na Rockwell HR15N, HR30N, ko HR45N.
2. Karfe mai tauri a saman
A fannin samar da kayayyaki a masana'antu, wani lokacin ana buƙatar tushen aikin ya kasance mai ƙarfi, yayin da saman kuma ana buƙatar ya kasance mai ƙarfi da juriya ga lalacewa. A wannan yanayin, ana amfani da na'urar kashewa mai yawan mita, na'urar kauri, nitriding, carbonitriding da sauran hanyoyin aiki don gudanar da aikin taurare saman. Kauri na layin taurare saman yawanci yana tsakanin milimita kaɗan zuwa milimita kaɗan. Ga kayan da ke da kauri na yadudduka masu taurare saman, ana iya amfani da sikelin HRC don gwada taurin su. Ga ƙarfe masu taurare saman matsakaici, ana iya amfani da sikelin HRD ko HRA. Ga yadudduka masu taurare saman siriri, ya kamata a yi amfani da sikelin taurare saman Rockwell HR15N, HR30N, da HR45N. Ga yadudduka masu taurare saman siriri, ya kamata a yi amfani da na'urar gwada taurare ta micro Vickers ko na'urar gwada taurare ta ultrasonic.
3. Karfe mai annashuwa, ƙarfe mai tsari, ƙarfe mai laushi
Ana samar da kayan ƙarfe da yawa a cikin yanayi mai annealed ko kuma na al'ada, kuma wasu faranti na ƙarfe masu sanyi ana kimanta su bisa ga matakai daban-daban na annealing. Gwajin tauri na ƙarfe daban-daban masu annealed yawanci yana amfani da sikelin HRB, kuma wani lokacin ana amfani da sikelin HRF don faranti masu laushi da siriri. Don faranti masu siriri, ya kamata a yi amfani da ma'aunin tauri na Rockwell HR15T, HR30T, da HR45T.
4. Bakin ƙarfe
Ana samar da kayan ƙarfe na bakin ƙarfe a wurare kamar su annealing, quenching, tempering, da solution mai ƙarfi. Ka'idojin ƙasa sun ƙayyade ƙimar tauri ta sama da ƙasa da ta ƙasa da ta dace, kuma gwajin tauri yawanci yana amfani da ma'aunin gwajin tauri na Rockwell HRC ko ma'aunin HRB. Za a yi amfani da ma'aunin HRB don ma'aunin bakin ƙarfe na austenitic da ferritic, za a yi amfani da ma'aunin HRC na ma'aunin tauri na Rockwell don ma'aunin martensite da hazo na bakin ƙarfe, kuma za a yi amfani da ma'aunin HRN ko ma'aunin HRT na ma'aunin tauri na Rockwell don bututun bakin ƙarfe masu sirara da kayan takarda waɗanda kaurinsu bai wuce 1~2mm ba.
5. Karfe da aka ƙera
Ana amfani da gwajin taurin Brinell yawanci don ƙarfen da aka ƙera, saboda tsarin ƙarfen da aka ƙera bai yi daidai ba, kuma shigar gwajin taurin Brinell yana da girma. Saboda haka, gwajin taurin Brinell zai iya nuna cikakken sakamakon tsarin da halayen dukkan sassan kayan.
6. Ƙarfe mai siminti
Sau da yawa kayan ƙarfen da aka yi da siminti ana siffanta su da tsari mara daidaito da kuma ƙwayoyin da ba su da kauri, don haka gabaɗaya ana amfani da gwajin taurin Brinell. Ana iya amfani da na'urar gwajin taurin Rockwell don gwajin taurin wasu kayan aikin ƙarfen da aka yi da simintin. Inda babu isasshen yanki a kan ƙaramin ɓangaren simintin hatsi don gwajin taurin Brinell, ana iya amfani da sikelin HRB ko HRC sau da yawa don gwada taurin, amma ya fi kyau a yi amfani da sikelin HRE ko HRK, saboda ma'aunin HRE da HRK suna amfani da ƙwallon ƙarfe mai diamita 3.175mm, wanda zai iya samun matsakaicin karatu fiye da ƙwallon ƙarfe mai diamita 1.588mm.
Kayan ƙarfe masu tauri masu laushi galibi suna amfani da na'urar gwada tauri ta Rockwell HRC. Idan kayan bai daidaita ba, ana iya auna bayanai da yawa kuma a ɗauki matsakaicin ƙimar.
7. Simintin carbide (ƙarfe mai tauri)
Gwajin taurin kayan ƙarfe mai tauri yawanci yana amfani ne kawai da ma'aunin HRA na gwajin taurin Rockwell.
8. Foda
Lokacin Saƙo: Yuni-02-2023
