Thandizo lachiphamaso la kutentha limagawidwa m'magulu awiri: imodzi ndi yozimitsa yokha komanso yochepetsera kutentha, ndipo ina ndi mankhwala a kutentha kwa mankhwala.Njira yoyesera kuuma ndi motere:
1. kuzimitsidwa mwachiphamaso ndi kutentha kutentha mankhwala
Kuzimitsa kwapang'onopang'ono komanso kutentha kwapang'onopang'ono nthawi zambiri kumachitika ndi kutenthetsa kolowera kapena kutentha kwamoto.Waukulu luso magawo ndi zachiphamaso kuuma, m`deralo kuuma ndi ogwira anaumitsa wosanjikiza kuya.Vickers hardness tester kapena Rockwell hardness tester atha kugwiritsidwa ntchito poyesa kuuma.Mphamvu yoyesera Kusankhidwa kumagwirizana ndi kuya kwa gawo lolimba lolimba komanso kuuma kwapamtunda kwa workpiece.Pali makina atatu olimba omwe akukhudzidwa apa.
(1) Vickers hardness tester ndi njira yofunikira kuyesa kuuma kwapang'onopang'ono kwa zida zotenthetsera kutentha.Itha kugwiritsa ntchito mphamvu yoyesera ya 0.5-100KG kuyesa wosanjikiza wowoneka bwino ngati woonda ngati 0.05mm wandiweyani.Kulondola kwake ndikokwera kwambiri ndipo kumatha kusiyanitsa zida zogwiritsira ntchito kutentha.Kusiyanitsa pang'ono pakuuma kwapang'onopang'ono, kuwonjezera, kuya kwa gawo lolimba lolimba kumawonedwanso ndi Vickers kuuma tester, kotero ndikofunikira kukonzekeretsa Vickers kuuma tester kwa mayunitsi omwe amapangira kutentha kwapang'onopang'ono kapena kugwiritsa ntchito nambala yayikulu. za chiphamaso kutentha mankhwala workpieces.
(2) The Rockwell hardness tester ndi yoyeneranso kuyesa kuuma kwa chogwirira ntchito chozimitsidwa.Pali mamba atatu oyesa kulimba kwa Rockwell oti musankhe.Itha kuyesa zida zolimba zowoneka bwino zomwe kuya kwake kumapitilira 0.1mm.Ngakhale kulondola kwapamwamba kwa Rockwell hardness tester sikuli kofanana ndi kwa Vickers hardness tester, ikhoza kukwaniritsa zofunikira monga njira yodziwira kasamalidwe kabwino ndi kufufuza koyenerera kwa zomera zochizira kutentha..Kupatula apo, ilinso ndi mawonekedwe a ntchito yosavuta, kugwiritsa ntchito bwino, mtengo wotsika, kuyeza kofulumira, komanso kuwerenga molunjika kwa mfundo zowuma.Choyesa chapamwamba cha Rockwell hardness tester chitha kugwiritsidwa ntchito kuzindikira mwachangu komanso mosawononga magulu azinthu zopangira kutentha pang'ono chimodzi ndi chimodzi.Ndizofunikira kwambiri ku mafakitale opanga zitsulo ndi makina opanga makina.Pamene kutentha kwachiphamaso kumawumitsidwa wosanjikiza ndi wandiweyani, Rockwell hardness tester ingagwiritsidwenso ntchito.Pamene kutentha kutentha kuuma wosanjikiza makulidwe ndi 0.4-0.8mm, sikelo HRA angagwiritsidwe ntchito.Kuzama kwa wosanjikiza Kukapitilira 0.8mm, sikelo ya HRC ingagwiritsidwe ntchito.Ma Vickers, Rockwell ndi Rockwell amtundu wa Rockwell atatu olimba amatha kusinthidwa mosavuta kukhala wina ndi mnzake, kusinthidwa kukhala miyezo, zojambula kapena kuuma komwe kumafunidwa ndi ogwiritsa ntchito, ndipo tebulo losinthika lofananira lili mu ISO yapadziko lonse lapansi.American standard ASTM ndi Chinese standard GB/T aperekedwa.
(3) Pamene makulidwe a chiwombankhanga chotenthedwa ndi kutentha kuli pamwamba pa 0.2mm, choyesa cholimba cha Leeb chingagwiritsidwe ntchito, koma chojambula chamtundu wa C chiyenera kusankhidwa.Poyezera, chidwi chiyenera kuperekedwa kumapeto kwachiphamaso komanso makulidwe onse a workpiece.Njira yoyezera iyi ilibe Vickers ndi Rockwell The hardness tester ndi yolondola, koma ndiyoyenera kuyeza pamalo pafakitale.
2 mankhwala kutentha mankhwala
Chithandizo cha kutentha kwa Chemical ndikulowetsa pamwamba pa workpiece ndi maatomu a chinthu chimodzi kapena zingapo zamakemikolo, potero amasintha kapangidwe kake, kapangidwe kake ndi magwiridwe antchito apamwamba a workpiece.Pambuyo pozimitsa ndi kutentha pang'ono kutentha, chowoneka bwino cha workpiece chimakhala cholimba kwambiri komanso kukana kuvala.ndi kukhudzana ndi kutopa mphamvu, ndipo pachimake cha workpiece ali ndi mphamvu mkulu ndi kulimba.Waukulu luso magawo a mankhwala kutentha mankhwala workpiece ndi kuya kwa wosanjikiza anaumitsa ndi pamwamba kuuma.Mtunda womwe kuuma kumatsikira mpaka 50HRC ndiye kuzama kolimba kolimba.Kuyesa kwachiphamaso kwa zida zogwiritsidwa ntchito ndi kutentha kwamankhwala ndizofanana ndi kuyesa kuuma kwa zida zothimitsidwa ndi kutentha zomwe zazimitsidwa.Ma Vickers hardness testers, Rockwell hardness testers kapena Rockwell hardness testers angagwiritsidwe ntchito.Woyesa kuuma kuti azindikire, makulidwe okha a nitriding thicker ndiowonda, nthawi zambiri osapitilira 0.7mm, ndiye Rockwell hardness tester singagwiritsidwe ntchito.
3. mankhwala kutentha m'deralo
Ngati m`deralo kutentha mbali mankhwala amafuna mkulu m`deralo kuuma, m`deralo kuzimitsa kutentha mankhwala angathe kuchitidwa mwa Kutenthetsa kupatsidwa ulemu, etc. mbali zotere zimafunika chizindikiro malo a quenching kutentha mankhwala ndi m`deralo kuuma mtengo pa kujambula, ndi kuuma. kuyesa kwa magawo kuyenera kuchitidwa m'dera lomwe mwasankha, chida choyezera kuuma chitha kugwiritsa ntchito Rockwell hardness tester kuyesa kuuma kwa HRC.Ngati kutentha kwaumisiri wosanjikiza sikuli kozama, choyesa cha Rockwell hardness tester chingagwiritsidwe ntchito kuyesa kuuma kwa HRN.
Nthawi yotumiza: Aug-16-2023
