Kodi HSS ndi chiyani?

Chitsulo chothamanga kwambiri (HSS) chakhala muyeso wa zida zodulira zitsulo kuyambira 1830s.

Chitsulo chothamanga kwambiri (HSS) ndi chida chachitsulo cholimba kwambiri, kukana kuvala kwambiri, komanso kukana kutentha kwambiri. Imatchedwanso chitsulo chakuthwa, kutanthauza kuti imatha kuumitsa ndikukhalabe yakuthwa ngakhale itakhazikika mumlengalenga pakuzimitsa.

Chitsulo chothamanga kwambiri chimakhala ndi kuchuluka kwa carbon ndi zitsulo zina. Poganizira kuti kapangidwe kake ndi chinthu chofunikira kwambiri pazitsulo zothamanga kwambiri, HSS ili ndi tungsten, molybdenum, chromium, vanadium, cobalt, ndi zinthu zina zopanga carbide mu kuchuluka kwa pafupifupi 10 mpaka 25% ya ma alloying. Zolemba izi zimapereka HSS ndi zida zapamwamba zodula komanso zamakina monga kukana kuvala. Akathimidwa, chitsulo, chromium, s    ome tungsten, ndi carbon yochuluka muzitsulo zothamanga kwambiri zimapanga ma carbides olimba kwambiri omwe angathandize kuti chitsulocho zisawonongeke.

Kuphatikiza apo, HSS imadziwika kuti ili ndi kuuma kotentha kwambiri. Izi ndichifukwa choti tungsten imasungunuka m'matrix. Kuuma kotentha kwachitsulo chothamanga kwambiri kumatha kufika madigiri 650. Tungsten, molybdenum, chromium, vanadium, cobalt, ndi ma carbides ena ali ndi zinthu zomwe zimathandiza kukhalabe olimba kwambiri pakudula kwambiri kutentha (pafupifupi 500 ° C).

Kuyerekeza HSS ndi zitsulo carbon chida akhoza kudziwa amene ali ndi kuuma apamwamba kutentha firiji pambuyo kuzimitsidwa ndi kutentha pa otsika kutentha. Koma kutentha kukakhala pamwamba pa 200 ° C, kuuma kwa chitsulo cha carbon tool kudzatsika kwambiri. Komanso, kuuma kwa carbon tool steels pa 500 ° C kudzatsika kufika pamtunda wofanana ndi wa annealed state, zomwe zikutanthauza kuti mphamvu yake yodula zitsulo imatayika kwathunthu. Chodabwitsa ichi chimachepetsa kugwiritsa ntchito zida za kaboni pazida zodulira. Zitsulo zothamanga kwambiri zimapanga zoperewera zazikulu zazitsulo za carbon tool chifukwa cha kuuma kwawo kwabwino.

Carbide yokhala ndi simenti ndiyopambana kuposa HSS nthawi zambiri. Ngati muli ndi chidwi ndi zinthu za tungsten carbide ndipo mukufuna zambiri ndi zambiri, mutha KULUMIKIZANA NAFE pa lamya kapena makalata kumanzere kapena KUTITUMIZIRA MAIL pansi pa tsamba. Tikuyembekezera kufunsa kwanu.