Ninu awọn ọja ile-iṣẹ, irin jia ni lilo pupọ ni awọn ọna gbigbe agbara ti ọpọlọpọ awọn ohun elo ẹrọ nitori agbara giga rẹ, resistance wọ ati resistance rirẹ. Didara rẹ taara ni ipa lori didara ati igbesi aye ohun elo naa. Nitorinaa, iṣakoso didara ti irin jia jẹ pataki pupọ. Nigbati o ba yan, agbara rẹ, toughness ati resistance resistance yẹ ki o gbero. Ṣaaju ki o to sisẹ irin jia, a nilo lati ṣe itupalẹ ilana metallographic, líle, akopọ kemikali, ati bẹbẹ lọ ti ohun elo naa. Ilana metallographic ati lile ti irin jia jẹ awọn itọkasi bọtini fun iṣiro awọn ohun-ini ẹrọ rẹ, awọn ipa itọju ooru ati igbesi aye iṣẹ. Itupalẹ metallographic ati idanwo líle ti irin jia gbọdọ ni muna tẹle ilana boṣewa, ati ṣe agbekalẹ ero idanwo kan ti o da lori awọn abuda ohun elo ati awọn ipo iṣẹ:
Ni akọkọ, itupalẹ metallographic. Ilana metallographic ti irin jia ni ipa nla lori iṣẹ rẹ, gẹgẹbi ijinle ti Layer carburized, iwọn ọkà, pinpin carbide, bbl O jẹ dandan lati pinnu awọn igbesẹ itupalẹ, gẹgẹbi iṣapẹẹrẹ, igbaradi ayẹwo, ipata, ati lẹhinna ṣe akiyesi eto naa. O tun le jẹ pataki lati darukọ awọn iru ara ti o wọpọ, gẹgẹbi martensite, bainite, pearlite, ati bi o ṣe le ṣe ayẹwo boya awọn ara wọnyi ba awọn iṣedede.
Lẹhinna idanwo lile yoo wa. Lile ti irin jia jẹ ibatan taara si yiya resistance ati agbara. Awọn ọna idanwo lile lile ti o wọpọ pẹlu lile Rockwell, lile Brinell, lile Vickers, ati o ṣee ṣe lile Rockwell dada fun awọn fẹlẹfẹlẹ carburized. O jẹ dandan lati ṣe alaye awọn oju iṣẹlẹ ti o wulo ti awọn ọna idanwo oriṣiriṣi, gẹgẹbi Vickers tabi Rockwell dada fun awọn fẹlẹfẹlẹ carburized, ati Brinell tabi Rockwell fun lile lapapọ. Ni akoko kanna, awọn iṣedede idanwo, gẹgẹbi ASTM tabi GB, ati awọn iṣọra lakoko idanwo, gẹgẹbi yiyan awọn aaye idanwo, itọju oju oju, ati bẹbẹ lọ, yẹ ki o mẹnuba.
Ṣaaju ki o to itupalẹ, a nilo akọkọ lati ge ati ṣe ayẹwo irin jia. Ni isalẹ a lo ẹrọ gige iṣapẹẹrẹ metallographic deede bi apẹẹrẹ lati ṣafihan ilana gige ayẹwo.
1. Ya jade ni workpiece ati ki o dimole o pẹlu awọn ọna kan dimole.
2. Lẹhin ti clamping awọn workpiece, fi lori aabo ideri.
3. Ṣeto awọn paramita gige lori iboju ki o bẹrẹ eto gige
4. Ṣii ideri oke ati ki o mu apẹrẹ ti a ge lati pari ilana gige ayẹwo.
Awọn ayẹwo gige le ṣee lo fun awọn ilana igbaradi ayẹwo atẹle gẹgẹbi gbigbe, lilọ, ati didan, lẹhin eyiti idanwo lile jia tabi itupalẹ metallographic le ṣee ṣe.
Akoko ifiweranṣẹ: Oṣu Kẹrin Ọjọ 02-2025
