Wa kọ ẹkọ nipa HSS
Irin-giga-giga (HSS) jẹ irin ọpa pẹlu líle ti o ga, giga resistance resistance ati giga ooru resistance, tun mọ bi afẹfẹ irin tabi didasilẹ irin, afipamo pe o lile paapaa nigba ti tutu ni air nigba quenching ati ki o jẹ didasilẹ. O tun npe ni irin funfun.
Irin iyara to gaju jẹ irin alloy pẹlu akojọpọ eka ti o ni awọn eroja ti o ni carbide bi tungsten, molybdenum, chromium, vanadium ati koluboti. Lapapọ iye awọn eroja alloying de ọdọ 10 si 25%. O le ṣetọju lile giga labẹ ooru giga (nipa 500 ℃) ni gige iyara giga, HRC le wa ni oke 60. Eyi jẹ ẹya pataki julọ ti HSS - lile lile. Ati irin ọpa erogba nipasẹ quenching ati iwọn otutu otutu kekere, ni iwọn otutu yara, botilẹjẹpe líle ti o ga pupọ wa, ṣugbọn nigbati iwọn otutu ba ga ju 200 ℃, líle yoo ju silẹ ni kiakia, ni 500 ℃ líle ti lọ silẹ si iwọn kanna pẹlu ipo annealed, padanu agbara patapata lati ge irin, eyiti o fi opin si awọn irinṣẹ gige ohun elo erogba. Ati irin-giga-giga nitori lile pupa to dara, lati ṣe soke fun awọn aito apaniyan ti erogba ọpa irin.
Irin iyara to ga julọ ni a lo ni akọkọ lati ṣe iṣelọpọ eka tinrin-eti ati awọn irinṣẹ gige irin ti o ni ipa, ṣugbọn tun lati ṣe iṣelọpọ iwọn otutu giga ati awọn kuku tutu, gẹgẹ bi awọn irinṣẹ titan, awọn adaṣe, awọn hobs, awọn abẹfẹlẹ ẹrọ ati awọn ku ibeere.
Wa kọ ẹkọ nipa irin tungsten
Tungsten irin (carbide) ni lẹsẹsẹ awọn ohun-ini ti o dara julọ gẹgẹbi lile lile, resistance resistance, agbara ti o dara julọ ati lile, resistance ooru, resistance ipata, bbl Paapa líle giga rẹ ati resistance resistance wa ni ipilẹ ko yipada paapaa ni iwọn otutu ti 500 ℃, ati tun ni líle giga ni 1000 ℃.
Tungsten, irin, ti awọn eroja akọkọ jẹ tungsten carbide ati koluboti, awọn iroyin fun 99% ti gbogbo awọn irinše ati 1% ti awọn irin miiran, nitorina ni a ṣe pe ni tungsten, irin ti a tun mọ ni carbide cemented, ati pe o jẹ eyin ti ile-iṣẹ igbalode.
Irin Tungsten jẹ ohun elo idapọmọra sintered ti o ni o kere ju akojọpọ carbide irin kan ninu. Tungsten carbide, cobalt carbide, niobium carbide, titanium carbide, ati tantalum carbide jẹ awọn paati ti o wọpọ ti irin tungsten. Iwọn ọkà ti paati carbide (tabi alakoso) jẹ deede ni iwọn 0.2-10 microns, ati pe awọn oka carbide ti wa ni asopọ papọ nipa lilo ohun elo irin kan. Awọn irin ifaramọ jẹ awọn irin ẹgbẹ irin ni gbogbogbo, koluboti ti o wọpọ ati nickel. Bayi ni o wa tungsten-cobalt alloys, tungsten-nickel alloys ati tungsten-titanium-cobalt alloys.
Tungsten sinter forming ni lati tẹ awọn lulú sinu kan billet, ki o si sinu kan sintering ileru lati ooru o si kan awọn iwọn otutu (sintering otutu) ati ki o pa fun akoko kan (idaduro akoko), ati ki o si dara o si isalẹ lati gba tungsten irin ohun elo pẹlu awọn ohun-ini ti a beere.
① Tungsten ati koluboti simenti carbide
Ẹya akọkọ jẹ tungsten carbide (WC) ati cobalt binder (Co). Iwọn naa jẹ “YG” (“lile, cobalt” ni Hanyu Pinyin) ati ipin ogorun akoonu koluboti apapọ. Fun apẹẹrẹ, YG8, eyiti o tumọ si apapọ WCo = 8% ati iyokù jẹ tungsten carbide cemented carbide.
② Tungsten, titanium ati koluboti simenti carbide
Awọn paati akọkọ jẹ tungsten carbide, titanium carbide (TiC) ati koluboti. Ipele naa jẹ “YT” (“lile, titanium” ni Hanyu Pinyin) ati akoonu apapọ ti carbide titanium. Fun apẹẹrẹ, YT15, tumo si aropin TiC=15%, iyoku jẹ tungsten carbide ati koluboti akoonu ti tungsten titanium cobalt carbide.
③Tungsten-titanium-tantalum (niobium) carbide
Awọn paati akọkọ jẹ tungsten carbide, titanium carbide, tantalum carbide (tabi niobium carbide) ati koluboti. Iru carbide yii ni a tun pe ni carbide gbogboogbo tabi carbide agbaye. Ipele naa ni “YW” (“lile” ati “milionu” ni Hanyu Pinyin) pẹlu nọmba lẹsẹsẹ, gẹgẹbi YW1.
Tungsten, irin ni o ni lẹsẹsẹ ti o tayọ-ini bi ga líle, wọ resistance, dara agbara ati toughness, ooru resistance, ipata resistance, bbl Paapa awọn oniwe-giga líle ati wọ resistance wa besikale ko yipada ani ni kan otutu ti 500 ℃, ki o si tun ni ga líle ni 1000 ℃. Simenti carbide ti wa ni o gbajumo ni lilo bi awọn ohun elo, gẹgẹ bi awọn titan irinṣẹ, milling irinṣẹ, drills, alaidun irinṣẹ, bbl Iyara gige ti awọn titun carbide jẹ dogba si ogogorun ti igba ti erogba, irin.
Akoko ifiweranṣẹ: Kínní-21-2023
