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Musiyano Pakati Yekumhanya Simbi Uye Tungsten Simbi

2021-08-14

Musiyano Pakati Yekumhanya Simbi Uye Tungsten Simbi


Yakakwira-inomhanyisa simbi (HSS) chishandiso simbi ine hurema hwakareba, yakasimba yekupfeka kusagadzikana uye yakanyanya kupisa kupisa, inozivikanwa seye simbi yemhepo kana yesimbi yepamberi, zvinoreva kuti inogona kuomeswa kunyangwe ikatonhodzwa mumhepo panguva yekudzima, uye inopinza kwazvo. Inonziwo chena simbi.


Musiyano Pakati Yekumhanya Simbi Uye Tungsten Simbi
Iyo Yekutanga Ruzivo rwePurasita Mould Uye Ceramic Modeling. -PTJ CNC MACHING Shop

Simbi yepamusoro-soro isimbi yakaoma alloy, ine carbide inogadzira zvinhu zvakaita se tungsten, molybdenum, chromium, vanadium, uye cobalt. Huwandu hwezvinhu zvealloying ndeye 10-25%. Inogona kuchengetedza kuoma kwepamusoro kunyange kana kupisa kwakanyanya kunogadzirwa nekucheka kwepamusoro-soro (inenge 500 ℃), uye HRC inogona kuva pamusoro pe 60. Ichi ndicho chimiro chikuru chesimbi-yakaoma-tsvuku yakaoma. Mushure mekudzimurwa nekudzimurwa nekudziya kwakadzika, kabhoni mudziyo simbi ine kuoma kwakanyanya patembiricha yekamuri, asi kana tembiricha yakwira kupfuura 200 ℃, kuomarara kunodonha zvakanyanya, uye kuomarara pa500 ℃ kwadzikira kusvika padanho rakafanana neiyo annealed state. . , Yakarasika zvachose kukwanisa kutema simbi, iyo inoderedza kushandiswa kwesimbi ye carbon tool kugadzira midziyo yekucheka. Simbi yepamusoro-soro, nekuda kwekuoma kwayo kwakatsvuka, inogadzirisa kukanganisa kunouraya kwe carbon tool steel.

Simbi yepamusoro-soro inonyanya kushandiswa kugadzira maturusi akaomesesa akatetepa uye anodzivirira-resistant simbi yekucheka maturusi. Inogonawo kugadzira high-tembiricha kutakuras uye inotonhora extrusion inofa, senge maturusi ekutenderedza, zvibooreso, hobs, muchina saw blades, uye mold inoda.

Tungsten simbi (yakaoma alloy) ine nhevedzano yezvakanakisa zvivakwa senge kuomarara kwakanyanya, kupfeka kuramba, simba rakanaka uye kuomarara, kusapisa kupisa uye kushomeka kwekushomeka, kunyanya kuoma kwayo kwakanyanya uye kusapfeka, kunyangwe tembiricha ye500 ℃ Kunyanya inoramba isingachinji, kuchiri kuomarara kwakanyanya pa1000 ℃.

Tungsten simbi, ine zvinhu zvikuru zvinoti tungsten carbide uye cobalt, inoita 99% yezvese zvinhu, uye 1% imwe simbi, saka inonzi tungsten simbi, inozivikanwawo secemented carbide, uye inonzi mazino eindasitiri yemazuva ano. .
Tungsten simbi ndeye sintered composite zvinhu inoumbwa ingangoita imwe simbi carbide. Tungsten carbide, cobalt carbide, niobium carbide, titanium carbide, uye tantalum carbide zvinhu zvakajairika zvetungsten simbi. Ukuru hwezviyo hwechikamu checarbide (kana chikamu) chinowanzova pakati pe 0.2-10 microns, uye zviyo zvecarbide zvinosungirirwa pamwe chete uchishandisa simbi binder. Simbi yekubatanidza kazhinji isimbi yeboka resimbi, uye cobalt uye nickel zvinowanzoshandiswa. Saka kune tungsten-cobalt alloys, tungsten-nickel alloys uye tungsten-titanium-cobalt alloys.

Tungsten simbi sintering molding ndeyekudzvanya hupfu muhusina chinhu, wobva waipisa muchoto chinopisa kune imwe tembiricha (sintering tembiricha), ichengetedze kwenguva yakati (kubata nguva), wozoitonhodza pasi kuti uwane tungsten simbi. zvinhu nekuita kunodiwa.

①Tungsten-cobalt simende carbide

Izvo zvakakosha zvinoumba tungsten carbide (WC) uye binder cobalt (Co). Giredhi rinoumbwa ne "YG" (kutanga kweChinese pinyin ye "hard and cobalt") uye chikamu cheavhareji yecobalt yemukati. Semuenzaniso, YG8 inoreva kuti avhareji WCo = 8%, uye yasara ndeye tungsten-cobalt simende carbide ye tungsten carbide.

②Tungsten-titanium-cobalt simende carbide

Izvo zvakakosha zvinoumba tungsten carbide, titanium carbide (TiC) uye cobalt. Giredhi rine "YT" (kutanga kweChinese pinyin ye "hard and titanium") uye avhareji yemukati yetitanium carbide. Semuenzaniso, YT15 inoreva kuti avhareji TiC = 15%, uye yasara ndeye tungsten carbide uye cobalt tungsten-titanium-cobalt simende carbide.

③Tungsten-titanium-tantalum (niobium) yakaoma alloy

Zvinhu zvikuru zvinoumba tungsten carbide, titanium carbide, tantalum carbide (kana niobium carbide) uye cobalt. Rudzi urwu rwesimende carbide inonziwo general cemented carbide kana universal cemented carbide. Giredhi rinoumbwa ne "YW" (mavambo eChinese Pinyin ekuti "zvakaoma" uye "万") pamwe nenhamba yekutevedzana, senge YW1.

Tungsten simbi ine nhevedzano yezvinhu zvakanakisa zvakadai sekuoma kwepamusoro, kusapfeka, simba rakanaka uye kuomarara, kusapisa kupisa uye kushomeka kwemarara, kunyanya kuomarara kwayo kwakanyanya uye kusapfeka, izvo zvinoramba zvisingachinji kunyangwe patembiricha ye500 ° C. Ichiri nekuoma kwepamusoro pa1000 ° C. Cemented carbide inoshandiswa zvakanyanya sechinhu, sematurusi ekuchinjisa, milling cutters, drill bits, boring cutters, etc. Kucheka kweiyo itsva simende carbide kakapetwa mazana kune iyo carbon steel.

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