Choyesa cholimba chimagwiritsidwa ntchito makamaka poyesa kuuma kwachitsulo chonyezimira ndi chitsulo choponyedwa chokhala ndi mawonekedwe osagwirizana.Kuuma kwa chitsulo chonyezimira ndi chitsulo chotuwirako kuli ndi makalata abwino ndi mayeso amphamvu.Itha kugwiritsidwanso ntchito ngati zitsulo zopanda chitsulo ndi zitsulo zofewa, ndipo cholowera chaching'ono cha mpira chimatha kuyeza kukula kochepa ndi zida zoonda.
Kuuma kumatanthawuza kuthekera kwa chinthu kukana kupunduka kwanuko, makamaka mapindikidwe apulasitiki, kulowa mkati kapena kukwapula, ndipo ndi chimodzi mwazinthu zofunika kwambiri zowonetsera zida zachitsulo.Nthawi zambiri, kuuma kwapamwamba, kumakhala bwino kukana kuvala.Ndilolozera kuyeza kufewa ndi kuuma kwa zipangizo.Malinga ndi njira zosiyanasiyana zoyesera, kuuma kumagawidwa m'mitundu itatu.Tiyeni tione aliyense wa iwo:
Kulimba kokankha:
Amagwiritsidwa ntchito makamaka poyerekeza kufewa ndi kuuma kwa mchere wosiyanasiyana.Njirayi ndiyo kusankha ndodo yokhala ndi mapeto amodzi mwamphamvu ndipo mapeto enawo ndi ofewa, kupititsa zinthu zomwe zimayenera kuyesedwa pamodzi ndi ndodoyo, ndikudziwitsani kuuma kwa zinthu zomwe ziyenera kuyesedwa malinga ndi malo a scratch.Kunena zowona, zinthu zolimba zimapanga zikanda zazitali ndipo zofewa zimapanga zazifupi.
Kulimba-kulimba:
Amagwiritsidwa ntchito makamaka pazinthu zachitsulo, njirayo ndikugwiritsa ntchito katundu wina kukanikiza inndenter yotchulidwa muzinthu zomwe zimayenera kuyesedwa, ndikuyerekeza kufewa ndi kuuma kwa zinthu zomwe ziyenera kuyesedwa ndi kukula kwa mapindikidwe apulasitiki apamtunda pamtunda wa zinthu.Chifukwa cha kusiyana kwa indenter, katundu ndi nthawi ya katundu, pali mitundu yambiri ya kuuma kwa indentation, makamaka kuphatikizapo Brinell hardness, Rockwell hardness, Vickers kuuma ndi microhardness.
Kulimbitsanso:
Zomwe zimagwiritsidwa ntchito kwambiri pazitsulo zachitsulo, njirayo ndi kupanga nyundo yapadera yaing'ono kugwa momasuka kuchokera pamtunda wina kuti ikhudze chitsanzo cha zinthu zomwe zimayenera kuyesedwa, ndikugwiritsa ntchito kuchuluka kwa mphamvu yamagetsi yosungidwa (ndiyeno kumasulidwa) mu chitsanzo panthawi ya mphamvu (kudzera mu kubwerera kwa nyundo yaying'ono) kuyeza kutalika kwa kulumpha) kuti muwone kuuma kwa zinthuzo.
The hardness tester yopangidwa ndi Shandong Shancai / Laizhou Laihua Testing Instrument ndi mtundu wa chida choyezera kuuma kwa indentation, chomwe chikuwonetsa kuthekera kwazinthu kukana kulowerera kwa zinthu zolimba pamwamba pake.Pali mitundu ingati?
1. Brinell Hardness Tester: Amagwiritsidwa ntchito makamaka kuyeza kuuma kwa chitsulo chosungunuka, chitsulo, zitsulo zopanda chitsulo ndi zofewa zofewa.Ndi njira yoyezera kuuma kolondola kwambiri.
2. Rockwell hardness tester: Rockwell hardness tester yomwe ingayese kuuma kwachitsulo pokhudza chitsanzo kumbali imodzi.Imadalira mphamvu ya maginito kuti igulitse mutu wa Rockwell hardness tester pamwamba pazitsulo, ndipo sichifunika kuthandizira chitsanzocho.
3. Vickers Hardness Tester: Vickers Hardness Tester ndi zipangizo zamakono zomwe zimagwirizanitsa optoelectronics ndi zamagetsi.Makinawa ndi owoneka bwino, odalirika, odalirika komanso osavuta kugwiritsa ntchito.Zida zoyezera kuuma kwa S ndi Knoop.
4. Brockwell hardness tester: Brockwell hardness tester ndi yoyenera kudziwa kuuma kwa zitsulo zachitsulo, zitsulo zopanda chitsulo, ma alloys olimba, zigawo za carburized ndi zigawo za mankhwala.
5. Microhardness tester: Microhardness tester ndi chida cholondola choyesera katundu wazitsulo mu makina, zitsulo ndi mafakitale ena, ndipo amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana.
6. Leeb Hardness Tester: Mfundo yake yaikulu ndi yakuti thupi lachiwombankhanga lomwe lili ndi kulemera kwina limakhudza pamwamba pa chitsanzo pansi pa mphamvu yoyesera, ndikuyesa kuthamanga kwa mphamvu ndi kubwereza liwiro la thupi lokhudzidwa pamtunda wa 1 mm kuchokera ku zitsanzo pamwamba, pogwiritsa ntchito mfundo electromagnetic, voteji molingana ndi liwiro amapangitsidwa.
7. Webster hardness tester: Mfundo ya Webster hardness tester ndi chitsulo cholimba chachitsulo chokhala ndi mawonekedwe enaake, omwe amapanikizidwa pamwamba pa chitsanzo pansi pa mphamvu yoyesera ya masika.
8. Barcol Hardness Tester: Ndi indentation hardness tester.Imakanikiza inndenter yeniyeni mu chitsanzo pansi pa zochitika za mphamvu yokhazikika ya masika, ndipo imatsimikizira kuuma kwa chitsanzo ndi kuya kwa indentation.
Nthawi yotumiza: May-24-2023
