Isivivinyo Sokuqina Kwe-Leeb
Njengamanje, umhloli wobulukhuni we-Leeb usetshenziswa kabanzi ekuhlolweni kobulukhuni be-castings. Umhloli wobulukhuni we-Leeb usebenzisa isimiso sokuhlolwa kobulukhuni obuguquguqukayo futhi usebenzisa ubuchwepheshe bekhompyutha ukuze kufezwe ukwenziwa okuncane kanye nokusetshenziswa kwe-elekthronikhi komhloli wobulukhuni. Kulula futhi kulula ukuyisebenzisa, ukufundwa kuyaqondakala kakhudlwana, futhi imiphumela yokuhlolwa ingaguqulwa kalula ibe amanani obulukhuni be-Brinell, ngakho-ke yamukelwa kabanzi.
Ama-castings amaningi ayizinto zokusebenza eziphakathi nendawo kuya kwezinkulu, ezinye zazo zinesisindo samathani amaningana, futhi azikwazi ukuhlolwa ku-bench-top hard tester. Ukuhlolwa kobulukhuni okunembile kwama-castings kusebenzisa kakhulu izinduku zokuhlola ezihlanganisiwe noma amabhlogo okuhlola anamathiselwe kuma-castings. Kodwa-ke, ibha yokuhlola noma ibhloko lokuhlola alikwazi ukuthatha indawo ngokuphelele ye-workpiece ngokwayo. Noma ngabe iyisithando esifanayo sensimbi encibilikisiwe, inqubo yokuphonsa kanye nezimo zokwelashwa kokushisa ziyafana. Ngenxa yomehluko omkhulu ngobukhulu, izinga lokushisa, ikakhulukazi izinga lokupholisa, lizohluka. Kunzima ukwenza lezi ezimbili zibe nobulukhuni obufanayo. Ngenxa yalesi sizathu, amakhasimende amaningi akhathalela kakhulu futhi akholelwa ebulukhunini be-workpiece uqobo. Lokhu kudinga i-portable precision hardness tester ukuze ihlole ubulukhuni be-castings. I-Leeb hardness tester ixazulula le nkinga, kodwa kuyadingeka ukunaka ukuphela kobuso be-workpiece ngesikhathi sokusetshenziswa kwe-Leeb hardness tester. I-Leeb hardness tester inezidingo zobulukhuni bobuso be-workpiece.
Isivivinyo Sokuqina Kwe-Brinell
Isihloli sokuqina kweBrinell kufanele sisetshenziswe ekuhlolweni kokuqina kwe-castings. Kuma-castings ensimbi ampunga anezinhlamvu eziqinile, izimo zokuhlola zamandla angu-3000kg kanye nebhola elingu-10mm kufanele zisetshenziswe ngangokunokwenzeka. Uma usayizi wokuphonsa umncane, isihloli sokuqina kweRockwell singasetshenziswa futhi.
Izinsimbi zensimbi zivame ukuba nesakhiwo esingalingani, okusanhlamvu okukhulu, futhi ziqukethe i-carbon, i-silicon kanye nokunye ukungcola okuningi kunensimbi, futhi ubulukhuni buzohluka ezindaweni ezincane ezahlukene noma ezindaweni ezahlukene. I-indenter yesihloli sobulukhuni be-Brinell inosayizi omkhulu nendawo enkulu yokugoba, futhi ingalinganisa inani elimaphakathi lobulukhuni bezinto ezibonakalayo ngaphakathi kobubanzi obuthile. Ngakho-ke, isihloli sobulukhuni be-Brinell sinokunemba okuphezulu kokuhlola kanye nokuhlakazeka okuncane kwamanani obulukhuni. Inani lobulukhuni elilinganisiwe limelela kakhulu ubulukhuni bangempela bento yokusebenza. Ngakho-ke, isihloli sobulukhuni be-Brinell sisetshenziswa kabanzi embonini yokwenziwa kwensimbi.
Ubulukhuni beRockwell
Izivivinyo zokuqina kweRockwell zivame ukusetshenziselwa ukuhlolwa kokuqina kwensimbi ephothiwe. Ezintweni zokusebenza ezinezinhlamvu ezincane, uma kungekho ndawo eyanele yokuhlola ubulukhuni beBrinell, ukuhlolwa kokuqina kweRockwell nakho kungenziwa. Kwensimbi ephothiwe ethambile, insimbi ephothiwe ebandayo kanye nensimbi ephothiwe, isikali se-HRB noma se-HRC singasetshenziswa. Uma izinto zingalingani, kufanele kulinganiswe ukufundwa okuningana futhi kuthathwe inani elimaphakathi.
Isivivinyo Sokuqina Kogu lolwandle
Ezimweni ngazinye, kwezinye izinto ezibunjiwe ezinezimo ezinkulu, akuvunyelwe ukusika isampula, futhi akuvunyelwe ukufaka amabhlogo okuhlola engeziwe okuhlola ubulukhuni. Ngalesi sikhathi, ukuhlolwa kobulukhuni kuzobhekana nobunzima. Kulesi simo, indlela evamile ukuhlola ubulukhuni ngesihloli sobulukhuni se-Shore esiphathwayo endaweni ebushelelezi ngemuva kokuba ukubumba sekuqediwe. Isibonelo, endinganisweni yokugoqa esetshenziswa kabanzi embonini yensimbi, kunqunywe ukuthi isihloli sobulukhuni se-Shore kufanele sisetshenziswe ukuhlola ubulukhuni.
Isikhathi sokuthunyelwe: Disemba-29-2022
