A na-ejikarị ihe ndị a kacha emepụta ihe bụ isi ike nke pịa-na usoro, dị ka ezi ihe siri ike, rockwell siri ike na obere ihe mgbochi. Ihe ha nwetara na-egosiputa ihe na-anọchi anya nguzo nke elu igwe ahụ na-adọkpụ plastichi sitere na introsion nke ndị si mba ọzọ.
Ihe ndị a bụ okwu mmalite dị mkpirikpi nke nkeji ihe isi ike:
1. Brinell siri ike (HB)
Pịa bọọlụ siri ike nke otu nha (ọ na-abụkarị 10mm na dayameta) n'ime ihe a nwere otu ibu (n'ozuzu 3000KG) ma debe ya ruo oge ụfọdụ. Mgbe ewepụchara ibu ahụ, oke nke ibu ahụ na mpaghara Indentation bụ uru siri ike (HB), na Kilogram ike / kilogram mm2).
2.
Mgbe HB> 450 ma ọ bụ ihe nlele pere mpe, enweghị ike iji ule siri ike na-enweghị ike iji ya na rockwell siri ike iji ya mee ihe kama. Ọ na-eji mpempe osisi diamond na 120 Celsius ma ọ bụ bọọlụ ígwè na dayameta nke 1.18mm ka a nwalee n'okpuru otu ihe ahụ na-enweta site na omimi nke ihe ahụ. Dabere na ihe siri ike nke ihe nnwale ahụ, enwere ike igosipụta ya na akpịrịkpa atọ dị iche iche:
HRA: Ọ bụ ihe isi ike nwetara site na iji igwe 30kg na otu diamond coe intender, ma jiri ya mee ihe siri ike (dịka carbide siri ike, wdg).
HRB: Ọ bụ ihe siri ike nwetara site na iji igwe 100kG na bọlbụ siri ike nke nwere dayameta nke 1.58mm. A na-eji ya maka ihe ndị nwere nsogbu siri ike (dị ka nchara nchara, igwe, wdg).
HRC: Ọ bụ ihe isi ike nwetara site na iji ibu 150kg na otu diamond coe intenter, ma jiri ya mee ihe siri ike (dịka nchara siri ike, wdg).
3 Vickers Hards (HV)
Jiri diamond square conter conge na-erughị 120kg na-erughị 126kg akụkụ nke 136 Celside mpaghara nke ihe dị mfe site na uru ibu, nke bụ Vickers Hard Uru HV (KGF / MM2).
E jiri ya tụnyere Brinkell na Rockwell ule siri ike, nnwale siri ike nwere ọtụtụ uru. O nweghi ihe mgbochi nke ọnọdụ akọwapụtara nke ya na dayameta d dị ka Brinell, nsogbu nke nrụrụ nke onye na-edebanye aha; Ọ bụ na ọ nweghị nsogbu nke uru isi ike nke Rockwell enweghị ike ịdị n'otu. Ọ nwere ike nwalee ihe ọ bụla dị nro ma sie ike, ọ nwere ike ịnwale ike nke akụkụ dị oke mkpa (ma ọ bụ ụbara) dị mma karịa Rockwell dị elu. Ma, ọ dịtụ n'okpuru ọnọdụ ndị dị otú ahụ, a pụrụ iji ya tụnyere ogo rockwell, ma enweghị ike iji ọkwa ndị ọzọ siri ike. Na mgbakwunye, n'ihi na Rockwell na-eji omimi ahụ dị ka ihe nha nha, na omimi ahụ na-adịkarị obere karịa obosara dị elu, yabụ, njehie ya na-ebukwa ibu. Ya mere, data siri ike nke Rockwell adịghị akwụsi ike dị ka brinall na vickers, na n'ezie adịghị ka kwụsie ike dị ka vickers nkenke.
Enwere ụfọdụ mmekọrịta dị n'etiti Brinell, Rockwell na Vickers, ma enwere tebụl ntụgharị nke enwere ike ịkọ nkọ.
Oge post: Mar-16-2023
