Yintoni iHSS?

Intsimbi yesantya esiphezulu (i-HSS) ibe ngumgangatho wezixhobo zokusika isinyithi ukususela kwi-1830s.

Isinyithi esinesantya esiphezulu (i-HSS) sisixhobo esinobunzima obuphezulu, ukuxhathisa ukunxiba, kunye nokumelana nobushushu obuphezulu. Ikwabizwa ngokuba yintsimbi ebukhali, oku kuthetha ukuba inokuqina kwaye ihlale ibukhali nangona ipholile emoyeni ngexesha lokucima.

Insimbi enesantya esiphezulu iqulethe ipesenti ephezulu yekhabhoni kunye nezinye izinyithi. Ukuqwalasela ukuba ukubunjwa kweyona nto ibaluleke kakhulu kwintsimbi ephezulu, i-HSS iqulethe i-tungsten, i-molybdenum, i-chromium, i-vanadium, i-cobalt, kunye nezinye izinto zokwenza i-carbide kwisixa esipheleleyo malunga ne-10 ukuya kwi-25% yezinto ezixutywayo. Ezi ziqulatho zibonelela nge-HSS ngokusika okuqhelekileyo kunye neempawu zoomatshini ezifana nokumelana nokunxiba. Kwimeko yokucima, i-iron, i-chromium, i-s    ome tungsten, kunye nesixa esikhulu sekhabhoni ekwisantya esiphezulu sentsimbi senza i-carbides eqine kakhulu enokuphucula ukuxhathisa kwentsimbi.

Ukongeza, i-HSS yaziwa ngokuba nobunzima obuphezulu bobushushu. Oku kungenxa yokuba i-tungsten inyibilika kwi-matrix. Ubunzima obushushu bentsimbi yesantya esiphezulu bunokufikelela kuma-650 degrees. I-Tungsten, i-molybdenum, i-chromium, i-vanadium, i-cobalt, kunye nezinye i-carbides ziqulethe izinto ezinceda ukugcina ubunzima obuphezulu kwi-high-temperature cut (malunga ne-500 ° C).

Ukuthelekisa i-HSS kunye ne-carbon tool steels inokwazi ukuba yeyiphi enobunzima obuphezulu kwiqondo lokushisa emva kokucinywa kunye nokufudumala kumaqondo aphantsi. Kodwa xa iqondo lokushisa liphezulu kune-200 ° C, ubunzima bensimbi yensimbi ye-carbon buya kuhla ngokukhawuleza. Ngaphezu koko, ubunzima be-carbon tool steels kwi-500 ° C buya kuhla kwinqanaba elifanayo nelobume be-annealed state, oku kuthetha ukuba ukukwazi ukusika isinyithi kulahlekile ngokupheleleyo. Esi siganeko sinciphisa ukusetyenziswa kweentsimbi ze-carbon tool kwizixhobo zokusika. Iintsimbi ezihamba ngesantya esiphezulu zenza iintsilelo eziphambili zeentsimbi ze-carbon tool ngenxa yobunzima bazo obuhle obushushu.

I-carbide ene-cemented iphezulu kune-HSS kwiimeko ezininzi. Ukuba unomdla kwiimveliso ze-tungsten carbide kwaye ufuna ulwazi oluthe kratya kunye neenkcukacha, UNGAQHAGAMSHELANA NATHI ngefowuni okanye ngeposi ngasekhohlo okanye SITHUMELE MAIL emazantsi ephepha. Sijonge phambili kumbuzo wakho.