Phapang pakeng tsa tšepe e phahameng le tšepe ea Tungsten

Tšepe ea lebelo le phahameng ke tšepe e rarahaneng ea alloy, e nang le lintho tse etsang carbide tse kang tungsten, molybdenum, chromium, vanadium le cobalt. Kakaretso ea likarolo tsa alloying ke hoo e ka bang 10-25%. E ka boloka boima bo phahameng esita le ha mocheso o phahameng o hlahisoa ke ho itšeha ka lebelo le phahameng (hoo e ka bang 500 ℃), 'me HRC e ka ba ka holimo ho 60. Ena ke tšobotsi e ka sehloohong ea boima bo bofubelu bo bofubelu ba tšepe. Kamora ho tima le ho halefa ka mocheso o tlase, tšepe ea sesebelisoa sa carbon e thatafalloa haholo mochesong oa kamore, empa ha mocheso o le holimo ho 200 ℃, boima bo theoha haholo, 'me boima ba 500 ℃ bo theohile ho fihlela boemong bo ts'oanang le boemo ba annealed. . , E lahlehetsoe ka ho feletseng ke bokhoni ba ho khaola tšepe, e fokotsang tšebeliso ea tšepe ea carbon tool ho etsa lisebelisoa tsa ho itšeha. Tšepe ea lebelo le phahameng, ka lebaka la boima ba eona bo bofubelu bo botle, e etsa hore ho be le mefokolo e bolaeang ea tšepe ea carbon tool.

Tšepe ea lebelo le phahameng e sebelisoa haholo ho etsa lisebelisoa tse rarahaneng tse sehang tse tšesaane le tse hananang le tšusumetso. E ka boela ea etsa mocheso o phahameng ho jaras le serame extrusion shoa, tse kang ho reteleha lithulusi, drill, hobs, mochine sakha blades, le hlobo e batlang.

Tungsten steel (hard alloy) e na le letoto la thepa e ntle joalo ka boima bo phahameng, ho hanyetsa ho roala, matla a matle le ho tiea, ho hanyetsa mocheso le ho hanyetsa kutu, haholo-holo boima ba eona bo phahameng le ho hanyetsa ho roala, esita le ka mocheso oa 500 ℃ Ha e le hantle e lula e sa fetohe. e ntse e le thata haholo ho 1000 ℃.

Tungsten steel, eo likarolo tsa eona tsa mantlha e leng tungsten carbide le cobalt, e etsa karolo ea 99% ea likarolo tsohle, 'me 1% ke litšepe tse ling, kahoo e bitsoa tungsten steel, e tsejoang hape e le carbide e entsoeng ka samente,' me e nkuoa e le meno a indasteri ea sejoale-joale. .
Tungsten tšepe ke thepa e entsoeng ka sintered e entsoeng ka bonyane carbide e le 'ngoe ea tšepe. Tungsten carbide, cobalt carbide, niobium carbide, titanium carbide, le tantalum carbide ke likarolo tse tloaelehileng tsa tšepe ea tungsten. Boholo ba lijo-thollo tsa karolo ea carbide (kapa mohato) hangata bo pakeng tsa 0.2-10 microns, 'me lithollo tsa carbide li kopantsoe hammoho ho sebelisa tšepe ea tšepe. Hangata tšepe e kopanyang ke tšepe ea sehlopha sa tšepe, 'me cobalt le nickel li sebelisoa hangata. Kahoo ho na le li-alloys tsa tungsten-cobalt, li-alloys tsa tungsten-nickel le li-alloys tsa tungsten-titanium-cobalt.

Tungsten steel sintering molding ke ho hatella phofo hore e be sekheo, ebe o e futhumatsa ka seboping sa sintering ho mocheso o itseng (mocheso oa sintering), o boloke nako e itseng (ho tšoara nako), ebe o o pholisa ho fumana tšepe ea tungsten. boitsebiso bo nang le tshebetso e batloang.

① Tungsten-cobalt carbide e entsoeng ka samente

Likarolo tse ka sehloohong ke tungsten carbide (WC) le binder cobalt (Co). Sehlopha se entsoe ka "YG" (litlhaku tsa pele tsa pinyin ea Sechaena ea "hard and cobalt") le peresente ea kakaretso ea cobalt. Mohlala, YG8 e bolela hore karolelano ea WCo=8%, 'me e setseng ke tungsten-cobalt cemented carbide ea tungsten carbide.

②Tungsten-titanium-cobalt e entsoeng ka samente carbide

Likarolo tse ka sehloohong ke tungsten carbide, titanium carbide (TiC) le cobalt. Mophato ona o na le "YT" (li-initials tsa Chinese pinyin ea "hard and titanium") le kakaretso ea litaba tsa titanium carbide. Mohlala, YT15 e bolela hore karolelano ea TiC=15%, 'me e setseng ke tungsten carbide le cobalt tungsten-titanium-cobalt cemented carbide.

③ motsoako o thata oa Tungsten-titanium-tantalum (niobium).

Likarolo tse ka sehloohong ke tungsten carbide, titanium carbide, tantalum carbide (kapa niobium carbide) le cobalt. Mofuta ona oa carbide e entsoeng ka samente e boetse e bitsoa carbide e kentsoeng ka kakaretso kapa universal cemented carbide. Sehlopha se entsoe ka "YW" (litlhaku tsa pele tsa Chinese Pinyin tsa "hard" le "万") hammoho le nomoro ea tatelano, joalo ka YW1.

Tungsten tšepe e na le letoto la thepa e babatsehang e kang boima bo phahameng, ho hanyetsa ho roala, matla a matle le ho tiea, ho hanyetsa mocheso le ho hanyetsa ha kutu, haholo-holo boima ba eona bo phahameng le ho hanyetsa ho apara, tse lulang li sa fetohe esita le mocheso oa 500 ° C. E ntse e na le boima bo phahameng ho 1000°C. Carbide e entsoeng ka samente e sebelisoa haholo e le lisebelisoa, tse kang lithulusi tse fetolang, li-milling cutters, li-drill bits, li-cutters tse boring, joalo-joalo Lebelo la ho itšeha la carbide e ncha e entsoeng ka samente ke makhetlo a makholo ho feta a carbon steel.

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