Ukuphuhliswa kunye nokuveliswa kwezixhobo ze-nonmagnetic hard alloy kubonakaliswa okubalulekileyo kwezinto ezintsha ze-alloy. I-Hard alloy yenziwa ngokufaka i-sintering ye-refractory metal carbides ye-IV A, VA, kunye namaqela e-VI A kwitheyibhile ye-periodic yezinto (ezifana ne-tungsten carbide WC), kunye nesinyithi sokutshintsha kweqela lentsimbi (cobalt Co, i-nickel Nickel, iron Fe) njengenqanaba lokudityaniswa kushishino lwesinyithi somgubo. I-tungsten carbide ingasentla ayinamagnetic, ngelixa i-Fe, i-Co, kunye ne-Ni zonke zimagnetic. Ukusebenzisa i-Ni njengesibophelelo yimeko eyimfuneko yokuvelisa i-alloys nonmagnetic.
Kukho ezi ndlela zilandelayo zokufumana WC Ni series nonmagnetic hard alloys:1. Lawula ngokungqongqo umxholo wekhabhoni
Njenge-WC Co alloy, umxholo wekhabhoni yeyona nto iphambili echaphazela umthamo wesisombululo esiqinileyo se-W kwisigaba se-bonding se-WC Ni ingxubevange. Oko kukuthi, i-carbon content yesigaba se-carbon compound kwi-alloy, inkulu umthamo wesisombululo esiqinileyo se-W kwisigaba se-Ni bonding, kunye noluhlu oluhlukeneyo malunga ne-10-31%. Xa isisombululo esiqinileyo se-W kwisigaba se-Ni esiboshiwe sidlula i-17%, i-alloy iba demagnetized. Ingundoqo yale ndlela kukufumana i-alloys enzima engabonakaliyo ngokunciphisa umxholo wekhabhoni kunye nokwandisa isisombululo esiqinileyo se-W kwisigaba sokubambisana. Ekusebenzeni, i-WC ye-powder enomxholo wekhabhoni ephantsi komxholo wekhabhoni yethiyori isetyenziswa ngokuqhelekileyo, okanye i-W powder yongezwa kumxube ukufezekisa injongo yokuvelisa i-alloys ephantsi kwekhabhoni. Nangona kunjalo, kunzima kakhulu ukuvelisa i-alloys nonmagnetic kuphela ngokulawula umxholo wekhabhoni.
2. Yongeza i-chromium Cr, i-molybdenum Mo, i-tantalum Ta
Ikhabhoni ephezulu WC-10% Ni (wt% ngokobunzima) ingxubevange ibonisa ferromagnetism kubushushu begumbi. Ukuba ngaphezulu kwe-0.5% i-Cr, i-Mo, kunye ne-1% ye-Ta yongezwa kwifom yesinyithi, i-carbon alloy ephezulu inokutshintsha ukusuka kwi-ferromagnetism ukuya kwi-non-magnetism. Ngokongeza i-Cr, iimpawu zamagnetic ze-alloy zizimeleyo kumxholo wekhabhoni, kwaye i-Cr iyisiphumo sesisombululo esikhulu esiqinileyo kwisigaba sokubambisana se-alloy, njengeW. ialloy non-magnetic kumxholo othile wekhabhoni. Ngenxa yesisombululo esisezantsi esiqinileyo se-Mo kunye ne-Ta kwisigaba sokubambisana, ininzi yabo ibamba kuphela i-carbon kwi-WC ukwenza i-carbides ehambelanayo okanye i-carbide solutions eqinile. Ngenxa yoko, ukubunjwa kwe-alloy kutshintshela kwicala lekhabhoni ephantsi, okubangelwa ukwanda kwesisombululo esiqinileyo se-W kwisigaba sokubambisana. Indlela yokongeza i-Mo kunye ne-Ta kukufumana i-alloy non-magnetic ngokunciphisa umxholo wekhabhoni. Nangona kungekho lula ukulawula njengokongeza i-Cr, kulula kakhulu ukulawula umxholo wekhabhoni kune-WC-10% ecocekileyo ye-Ni alloy. Uluhlu lomxholo wekhabhoni lwandisiwe ukusuka kwi-5.8-5.95% ukuya kwi-5.8-6.05%.
I-imeyile:oiltools14@welongpost.com
Qhagamshelana: Grace Ma
Ixesha lokuposa: Oct-09-2023
