{"id":8422,"date":"2026-05-26T17:02:27","date_gmt":"2026-05-26T09:02:27","guid":{"rendered":"https:\/\/www.endlesswiresaw.com\/tungsten-molybdenum-cutting\/"},"modified":"2026-05-26T17:18:12","modified_gmt":"2026-05-26T09:18:12","slug":"tungsten-molybdenum-cutting","status":"publish","type":"post","link":"https:\/\/www.endlesswiresaw.com\/tr\/tungsten-molybdenum-cutting\/","title":{"rendered":"Tungsten ve Molibden i\u00e7in Tel Testere Kesimi"},"content":{"rendered":"

Saf tungsten oda s\u0131cakl\u0131\u011f\u0131nda \u00e7atlar. Bazen de\u011fil - neredeyse her zaman, kesme y\u00f6nteminiz herhangi bir yanal kuvvet \u00fcretirse... Bir m\u00fc\u015fterimiz, kesitsel analiz i\u00e7in bize 25 mm \u00e7ap\u0131nda bir tungsten \u00e7ubu\u011fu g\u00f6nderdi. A\u015f\u0131nd\u0131r\u0131c\u0131 testereleri, bizi aramadan \u00f6nce \u00fc\u00e7 numuneyi par\u00e7alam\u0131\u015ft\u0131. \u00c7ubuk d\u0131\u015far\u0131dan iyi g\u00f6r\u00fcn\u00fcyordu, ancak tungstenin s\u00fcnek-gevrek ge\u00e7i\u015f s\u0131cakl\u0131\u011f\u0131 (DBTT) tane yap\u0131s\u0131na ba\u011fl\u0131 olarak 200\u00b0C ile 400\u00b0C aras\u0131ndad\u0131r. Oda s\u0131cakl\u0131\u011f\u0131nda, mekanik olarak cam gibi davranan ancak kur\u015fundan iki kat daha a\u011f\u0131r olan bir malzemeyi kesiyorsunuz. Yanl\u0131\u015f bir hareket ve numune tane s\u0131n\u0131rlar\u0131 boyunca k\u0131r\u0131l\u0131r, iki g\u00fcn haz\u0131rlad\u0131\u011f\u0131n\u0131z metalografik kesiti mahveder.<\/p>\n

Tungsten kesimi ve molibden kesimi bu temel zorlu\u011fu payla\u015f\u0131r: her ikisi de a\u015f\u0131r\u0131 sertlik, a\u015f\u0131r\u0131 yo\u011funluk ve dar bir g\u00fcvenli i\u015fleme ko\u015fullar\u0131 penceresine sahip refrakter metallerdir. Ancak farkl\u0131 \u015fekillerde ba\u015far\u0131s\u0131z olurlar - tungsten gevrek k\u0131r\u0131lmadan \u00e7atlar, molibden ise 500\u00b0C'nin \u00fczerinde feci \u015fekilde oksitlenir. Elmas tel kesimi, malzemenin s\u0131n\u0131rlar\u0131na sayg\u0131 duydu\u011funuz s\u00fcrece her ikisini de halleder.<\/p>\n

Bu makale, elmas tel testerelerle tungsten ve molibden kesmenin \u00f6zel zorluklar\u0131n\u0131, numuneleri sa\u011flam tutan parametre setlerini ve saf metalleri yayg\u0131n ala\u015f\u0131mlar\u0131ndan (W-Ni-Fe, TZM, Mo-La) kesme aras\u0131ndaki pratik farklar\u0131 ele almaktad\u0131r. Ara\u015ft\u0131rma, kalite denetimi veya bile\u015fen prototipleme i\u00e7in refrakter metal numuneleri haz\u0131rl\u0131yorsan\u0131z, buradaki veriler yedi tungsten ve d\u00f6rt molibden bile\u015fimi \u00fczerindeki testlerimizden gelmektedir.<\/p>\n

Tungsten ve Molibdeni Kesmek Neden Bu Kadar Zor?<\/h2>\n

Refrakter metaller, malzeme \u00f6zellik alan\u0131n\u0131n a\u015f\u0131r\u0131 bir k\u00f6\u015fesini i\u015fgal eder. Is\u0131, a\u015f\u0131nma, korozyon, deformasyon - her \u015feye direnirler, insanlar\u0131n onlar\u0131 kullanmas\u0131n\u0131n tam nedeni budur. Ayn\u0131 zamanda i\u015flenmesi de bir kabustur.<\/p>\n

Tungsten: DBTT Sorunu<\/h3>\n

Tungstenin belirleyici zorlu\u011fu, s\u00fcnek-gevrek ge\u00e7i\u015f s\u0131cakl\u0131\u011f\u0131d\u0131r. DBTT'nin \u00fczerinde, tungsten sert bir metal gibi plastik olarak deforme olur. Alt\u0131nda, tungsten bir seramik gibi k\u0131r\u0131l\u0131r. Ticari olarak saf tungsten i\u00e7in DBTT, 200\u00b0C ila 400\u00b0C aras\u0131nda de\u011fi\u015fir, kesin s\u0131cakl\u0131k tane boyutu, safl\u0131k ve i\u015fleme ge\u00e7mi\u015fine ba\u011fl\u0131d\u0131r. Toz metalurjisi tungsten (en yayg\u0131n form) daha y\u00fcksek uca do\u011fru e\u011filim g\u00f6sterir - 300\u2013400\u00b0C - \u00e7\u00fcnk\u00fc art\u0131k g\u00f6zeneklilik ve tane s\u0131n\u0131r\u0131 safs\u0131zl\u0131klar\u0131 stresi yo\u011funla\u015ft\u0131r\u0131r.<\/p>\n

Oda s\u0131cakl\u0131\u011f\u0131nda (20\u201325\u00b0C), DBTT'nin 200\u2013350\u00b0C alt\u0131nda \u00e7al\u0131\u015f\u0131yorsunuz. Malzemenin esasen s\u0131f\u0131r s\u00fcnekli\u011fi vard\u0131r. Yanal kuvvet, termal \u015fok veya titre\u015fim \u00fcreten herhangi bir kesme i\u015flemi, transgran\u00fcler veya intergran\u00fcler k\u0131r\u0131lma riski ta\u015f\u0131r.<\/p>\n

Ac\u0131mas\u0131z ger\u00e7ek \u015fu ki: tungstenin Vickers sertli\u011fi HV 350\u2013450'dir (sertle\u015ftirilmi\u015f tak\u0131m \u00e7eli\u011fi ile kar\u015f\u0131la\u015ft\u0131r\u0131labilir), yo\u011funlu\u011fu 19.3 g\/cm\u00b3't\u00fcr (en yayg\u0131n m\u00fchendislik metalleri aras\u0131nda en y\u00fckse\u011fi) ve k\u0131r\u0131lma toklu\u011fu yaln\u0131zca 5\u201315 MPa\u00b7m'dir1\/2<\/sup> oda s\u0131cakl\u0131\u011f\u0131nda enine y\u00f6nde. Kar\u015f\u0131la\u015ft\u0131rma i\u00e7in, Ti-6Al-4V'nin k\u0131r\u0131lma toklu\u011fu 75\u2013100 MPa\u00b7m'dir1\/2<\/sup>. Tungsten, titanyumdan 5\u201315 kat daha fazla \u00e7atlama e\u011filimindedir.<\/p>\n

Molibden: Oksidasyon Sorunu<\/h3>\n

Molibden mekanik olarak daha affedicidir - DBTT'si daha d\u00fc\u015f\u00fckt\u00fcr (saf Mo i\u00e7in yakla\u015f\u0131k \u201320\u00b0C ila 100\u00b0C), bu nedenle oda s\u0131cakl\u0131\u011f\u0131nda genellikle ge\u00e7i\u015fin \u00fczerindedir ve bir miktar s\u00fcnekli\u011fe sahiptir. Sorun kimyasal: molibden, 500\u00b0C'nin \u00fczerinde u\u00e7ucu MoO3 olu\u015fturur. Bu sadece y\u00fczey rengi de\u011fi\u015fikli\u011fi de\u011fil - oksit s\u00fcblimle\u015fir, yani malzeme kesme y\u00fczeyinden kelimenin tam anlam\u0131yla buharla\u015f\u0131r. 700\u00b0C'de, oksidasyon oran\u0131 feci hale gelir.<\/p>\n

500\u00b0C'nin \u00fczerinde lokalize \u0131s\u0131 \u00fcreten herhangi bir kesme y\u00f6ntemi, molibdeni geri d\u00f6nd\u00fcr\u00fclemez \u015fekilde hasar verecektir. A\u015f\u0131nd\u0131r\u0131c\u0131 kesme diskleri rutin olarak temas noktas\u0131nda 400\u2013800\u00b0C'ye ula\u015f\u0131r. Bu, sonraki herhangi bir analiz i\u00e7in numuneyi tehlikeye atan 50\u2013200 \u03bcm derinli\u011finde g\u00f6zenekli, oksitlenmi\u015f bir tabaka olu\u015fturmak i\u00e7in yeterlidir.<\/p>\n

\u00d6zellik Kar\u015f\u0131la\u015ft\u0131rmas\u0131<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n
\u00d6zellik<\/th>\nSaf Tungsten<\/th>\nSaf Molibden<\/th>\nTZM (Mo-0.5Ti-0.1Zr)<\/th>\nW-Ni-Fe (90\/7\/3)<\/th>\n<\/tr>\n<\/thead>\n
Yo\u011funluk (g\/cm\u00b3)<\/td>\n19.3<\/td>\n10.2<\/td>\n10.2<\/td>\n17.0\u201318.0<\/td>\n<\/tr>\n
Sertlik<\/td>\nHV 350\u2013450<\/td>\nHV 200\u2013280<\/td>\nHV 250\u2013320<\/td>\nHV 280\u2013350<\/td>\n<\/tr>\n
KTF (\u00b0C)<\/td>\n200\u2013400<\/td>\n\u201320 ila 100<\/td>\n\u201340 ila 50<\/td>\n100\u2013200<\/td>\n<\/tr>\n
Is\u0131l iletkenlik (W\/m\u00b7K)<\/td>\n173<\/td>\n138<\/td>\n126<\/td>\n90\u2013110<\/td>\n<\/tr>\n
K\u0131r\u0131lma toklu\u011fu (MPa\u00b7m1\/2<\/sup>)<\/td>\n5\u201315<\/td>\n15\u201330<\/td>\n20\u201335<\/td>\n30\u201360<\/td>\n<\/tr>\n
Oksidasyon ba\u015flang\u0131c\u0131 (\u00b0C)<\/td>\n400 (yava\u015f)<\/td>\n500 (h\u0131zl\u0131)<\/td>\n500 (h\u0131zl\u0131)<\/td>\n400 (yava\u015f)<\/td>\n<\/tr>\n
Birincil kesme riski<\/td>\nGevrek k\u0131r\u0131lma<\/td>\nOksidasyon \/ buharla\u015fma<\/td>\nOksidasyon<\/td>\nGevrek k\u0131r\u0131lma<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Tek \u00f6nemli ayr\u0131nt\u0131: tungsten \u00e7ok y\u00fcksek termal iletkenli\u011fe sahiptir (173 W\/m\u00b7K) - titanyumun 20 kat\u0131ndan fazla. Bu asl\u0131nda kesim i\u00e7in iyi bir haberdir. Is\u0131, kesme b\u00f6lgesinden ana malzemeye h\u0131zla da\u011f\u0131l\u0131r, bu nedenle elmas tel kesme s\u0131cakl\u0131klar\u0131 a\u015f\u0131r\u0131 so\u011futma \u00f6nlemleri olmadan oksidasyon e\u015fi\u011finin olduk\u00e7a alt\u0131nda kal\u0131r. Sorun termal de\u011fil - mekanik.<\/p>\n

\"Vimfun<\/figure>\n

Elmas Tel Kesimi Bu Sorunlar\u0131 Nas\u0131l \u00c7\u00f6z\u00fcyor?<\/h2>\n

Refrakter metaller i\u00e7in elmas telin temel avantaj\u0131 d\u00fc\u015f\u00fck kesme kuvvetidir.<\/p>\n

Bir sonsuz elmas tel d\u00f6ng\u00fcs\u00fc<\/a> kesme i\u015flemini tel \u00e7evresi boyunca binlerce elmas grit noktas\u0131na da\u011f\u0131t\u0131r. 0.35 mm \u00e7ap\u0131nda bir tel ile i\u015f par\u00e7as\u0131 aras\u0131ndaki temas alan\u0131 0.5 mm\u00b2'den azd\u0131r - bu nedenle toplam kesme kuvveti, oda s\u0131cakl\u0131\u011f\u0131nda bile tungstenin k\u0131r\u0131lma e\u015fi\u011finin olduk\u00e7a alt\u0131nda kal\u0131r. Genellikle tungsten kesimi s\u0131ras\u0131nda 2 N ila 5 N normal kuvvetler \u00f6l\u00e7eriz. Kar\u015f\u0131la\u015ft\u0131rma i\u00e7in, a\u015f\u0131nd\u0131r\u0131c\u0131 bir kesme diski, \u00e7ok daha b\u00fcy\u00fck bir temas alan\u0131 boyunca 20\u201350 N uygular ve \u00e7atlak yay\u0131lmas\u0131n\u0131 tetikleyen \u00f6nemli yanal kuvvet uygular.<\/p>\n

Molibden i\u00e7in avantaj termaldir. Elmas tel kesimi, standart su bazl\u0131 so\u011futucu ile i\u015f par\u00e7as\u0131 s\u0131cakl\u0131\u011f\u0131n\u0131 40\u00b0C'nin alt\u0131nda tutar - 500\u00b0C oksidasyon e\u015fi\u011finin y\u00fczlerce derece alt\u0131nda. MoO3 olu\u015fumu yok, u\u00e7ucu kay\u0131p yok, g\u00f6zenekli y\u00fczey tabakas\u0131 yok.<\/p>\n

Metal kesiminde t\u00fcm elmas tel kesimlerinde oldu\u011fu gibi \u00f6d\u00fcnle\u015fme h\u0131zd\u0131r. Tungsten kesme ilerleme h\u0131zlar\u0131, i\u015fledi\u011fimiz t\u00fcm malzemeler aras\u0131nda en yava\u015f olan\u0131d\u0131r - saf tungsten i\u00e7in dakikada 0.2 ila 0.5 mm. 20 mm'lik bir kesit, dilim ba\u015f\u0131na 40\u2013100 dakika s\u00fcrer. Bunun etraf\u0131ndan dola\u015fman\u0131n bir yolu yok: daha h\u0131zl\u0131 iterseniz, malzeme \u00e7atlar.<\/p>\n

\u00d6nerilen Tungsten Kesme Parametreleri Nelerdir?<\/h2>\n

Bu parametreler \u00fcretim testlerinden al\u0131nm\u0131\u015ft\u0131r, ders kitab\u0131 tahminleri de\u011fildir. Tungsten affetmez - temiz bir kesim ile \u00e7atlak bir numune aras\u0131ndaki bo\u015fluk, \u00e7al\u0131\u015ft\u0131\u011f\u0131m\u0131z di\u011fer t\u00fcm malzemelerden daha dard\u0131r.<\/p>\n

Saf Tungsten (\u226599.5% W)<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Parametre<\/th>\n\u00d6nerilen Aral\u0131k<\/th>\nNotlar<\/th>\n<\/tr>\n<\/thead>\n
Tel \u00e7ap\u0131<\/td>\n0,35\u20130,50 mm<\/td>\n0,42 mm standart; 0,35 mm ince kesitler i\u00e7in<\/td>\n<\/tr>\n
Tel gerginli\u011fi<\/td>\n180\u2013220 N<\/td>\nMetallerin \u00e7o\u011fundan daha y\u00fcksek \u2014 tungsten yo\u011funlu\u011fu bunu gerektirir<\/td>\n<\/tr>\n
Tel h\u0131z\u0131<\/td>\n40\u201355 m\/s<\/td>\n60 m\/s'yi a\u015fmay\u0131n; yo\u011fun malzemede y\u00fcksek h\u0131zda titre\u015fim sorun olur<\/td>\n<\/tr>\n
\u0130lerleme h\u0131z\u0131<\/td>\n0,2\u20130,5 mm\/dak<\/td>\nBu bir yaz\u0131m hatas\u0131 de\u011fil. Saf tungsten a\u015f\u0131r\u0131 sab\u0131r gerektirir<\/td>\n<\/tr>\n
So\u011futucu<\/td>\nSu bazl\u0131 kesme s\u0131v\u0131s\u0131<\/td>\nS\u00fcrekli ak\u0131\u015f, tel giri\u015finde minimum 2 L\/dak<\/td>\n<\/tr>\n
Kesme geni\u015fli\u011fi<\/td>\n0,45\u20130,60 mm<\/td>\n0,42 mm tel i\u00e7in standart<\/td>\n<\/tr>\n
Y\u00fczey p\u00fcr\u00fczl\u00fcl\u00fc\u011f\u00fc<\/td>\nRa 0,6\u20131,5 \u03bcm<\/td>\nTane yap\u0131s\u0131na g\u00f6re de\u011fi\u015fir; tek kristalli W daha iyi y\u00fczey sa\u011flar<\/td>\n<\/tr>\n
\u0130\u015f par\u00e7as\u0131 \u00f6n \u0131s\u0131tma<\/td>\n40\u201350\u00b0C \u00f6nerilir<\/td>\nMalzemeyi DBTT'ye yakla\u015ft\u0131r\u0131r, s\u00fcneklik pay\u0131n\u0131 iyile\u015ftirir<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Neden 40\u201350\u00b0C'ye kadar \u00f6n \u0131s\u0131tma yap\u0131l\u0131yor?<\/strong> DBTT'ye yakla\u015ft\u0131ran her derece, tungstenin k\u0131r\u0131lma direncini art\u0131r\u0131r. \u0130\u015f par\u00e7as\u0131n\u0131 sadece 40\u201350\u00b0C'ye kadar \u0131s\u0131tman\u0131n (kesmeden \u00f6nce 5 dakika s\u0131cak so\u011futucu \u00e7al\u0131\u015ft\u0131r\u0131larak kolayca elde edilir), saf tungsten numunelerinde \u00e7atlama olas\u0131l\u0131\u011f\u0131n\u0131 oda s\u0131cakl\u0131\u011f\u0131nda 20\u00b0C'de kesmeye k\u0131yasla yakla\u015f\u0131k azaltt\u0131\u011f\u0131n\u0131 bulduk. Bu, herhangi bir ders kitab\u0131nda bulunmayan ancak ba\u015far\u0131l\u0131 bir kesim ile par\u00e7alanm\u0131\u015f bir numune aras\u0131ndaki fark\u0131 yaratan detaylardan biridir.<\/p>\n

Ba\u015flang\u0131\u00e7ta bizi zorlayan bir \u015fey: tungstenin yo\u011funlu\u011fu (19,3 g\/cm\u00b3), k\u00fc\u00e7\u00fck bir numunenin aldat\u0131c\u0131 derecede a\u011f\u0131r oldu\u011fu anlam\u0131na gelir. 25 mm'lik bir k\u00fcp 300 gram a\u011f\u0131rl\u0131\u011f\u0131ndad\u0131r \u2014 bu, numune alttan d\u00fczg\u00fcn bir \u015fekilde desteklenmezse, yaln\u0131zca yer\u00e7ekiminin sabitleme noktalar\u0131nda gerilim yo\u011funlu\u011fu olu\u015fturmas\u0131 i\u00e7in yeterlidir. Her zaman tungsten i\u015f par\u00e7alar\u0131n\u0131 kesme \u00e7izgisinin her iki taraf\u0131nda destekleyin. Tungsten \u00fczerinde konsol kesimleri, kelep\u00e7e kenar\u0131nda k\u0131r\u0131lmaya davetiye \u00e7\u0131kar\u0131r.<\/p>\n

W-Ni-Fe A\u011f\u0131r Ala\u015f\u0131m (90W-7Ni-3Fe, 93W-5Ni-2Fe)<\/h3>\n

Tungsten a\u011f\u0131r ala\u015f\u0131mlar\u0131, saf tungstenden \u00f6nemli \u00f6l\u00e7\u00fcde daha kolay kesilir. Nikel-demir ba\u011flay\u0131c\u0131 faz\u0131, saf tungstenin eksik oldu\u011fu s\u00fcnekli\u011fi sa\u011flar ve etkin DBTT'yi 100\u2013200\u00b0C'ye d\u00fc\u015f\u00fcr\u00fcr.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
Parametre<\/th>\n\u00d6nerilen Aral\u0131k<\/th>\nNotlar<\/th>\n<\/tr>\n<\/thead>\n
Tel \u00e7ap\u0131<\/td>\n0,35\u20130,50 mm<\/td>\nSaf W ile ayn\u0131<\/td>\n<\/tr>\n
Tel gerginli\u011fi<\/td>\n170\u2013210 N<\/td>\nSaf W'den biraz daha d\u00fc\u015f\u00fck<\/td>\n<\/tr>\n
Tel h\u0131z\u0131<\/td>\n40\u201360 m\/s<\/td>\nSaf W'den biraz daha y\u00fckse\u011fe \u00e7\u0131k\u0131labilir<\/td>\n<\/tr>\n
\u0130lerleme h\u0131z\u0131<\/td>\n0,3\u20130,8 mm\/dak<\/td>\nSaf W'den \u201360 daha h\u0131zl\u0131<\/td>\n<\/tr>\n
So\u011futucu<\/td>\nSu bazl\u0131 kesme s\u0131v\u0131s\u0131<\/td>\nAyn\u0131 gereksinimler<\/td>\n<\/tr>\n
Y\u00fczey p\u00fcr\u00fczl\u00fcl\u00fc\u011f\u00fc<\/td>\nRa 0,5\u20131,0 \u03bcm<\/td>\nBa\u011flay\u0131c\u0131 faz nedeniyle saf W'den daha iyi<\/td>\n<\/tr>\n
\u0130\u015f par\u00e7as\u0131 \u00f6n \u0131s\u0131tma<\/td>\nGerekli de\u011fil<\/td>\nDBTT yeterince d\u00fc\u015f\u00fckt\u00fcr ki oda s\u0131cakl\u0131\u011f\u0131 i\u015fe yarar<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Ba\u011flay\u0131c\u0131 faz, bir \u00e7atlak durdurucu g\u00f6revi g\u00f6r\u00fcr \u2014 bir tungsten tanesinde bir mikro\u00e7atlak olu\u015ftu\u011funda, s\u00fcnek Ni-Fe matrisine \u00e7arpar ve durur. A\u011f\u0131r ala\u015f\u0131mlar\u0131n neden daha y\u00fcksek ilerleme h\u0131zlar\u0131na tolerans g\u00f6sterdi\u011fi ve \u00f6n \u0131s\u0131tma gerektirmedi\u011fi budur.<\/p>\n

Uyar\u0131: ba\u011flay\u0131c\u0131 faz, tungstenden daha yumu\u015fakt\u0131r, bu da telin Ni-Fe b\u00f6lgelerinden tungsten tanelerinden daha h\u0131zl\u0131 ge\u00e7ti\u011fi anlam\u0131na gelir. Cilal\u0131 kesitlerde, iki faz aras\u0131nda hafif bir y\u00fczey kabart\u0131s\u0131 g\u00f6rebilirsiniz. Metalografik haz\u0131rl\u0131k i\u00e7in bu bir sorun de\u011fil \u2014 mikro yap\u0131y\u0131 ortaya \u00e7\u0131karmak i\u00e7in asl\u0131nda faydal\u0131d\u0131r. Ancak sonraki yap\u0131\u015ft\u0131rma veya kaplama i\u00e7in d\u00fcz bir y\u00fczeye ihtiyac\u0131n\u0131z varsa, hafif bir z\u0131mparalama ad\u0131m\u0131 planlay\u0131n.<\/p>\n

\"Vimfun<\/p>\n

Tavsiye Edilen Molibden Kesme Parametreleri Nelerdir?<\/h2>\n

Molibden, tungstenden mekanik olarak daha i\u015fbirlik\u00e7idir \u2014 daha d\u00fc\u015f\u00fck sertlik, daha y\u00fcksek oda s\u0131cakl\u0131\u011f\u0131 s\u00fcnekli\u011fi ve genellikle ortam\u0131n alt\u0131nda bir DBTT'ye sahiptir. Ana endi\u015fe, kesme y\u00fczeyini oksidasyondan korumakt\u0131r.<\/p>\n

Saf Molibden (\u2265,5 Mo)<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Parametre<\/th>\n\u00d6nerilen Aral\u0131k<\/th>\nNotlar<\/th>\n<\/tr>\n<\/thead>\n
Tel \u00e7ap\u0131<\/td>\n0,35\u20130,50 mm<\/td>\n0,42 mm standart<\/td>\n<\/tr>\n
Tel gerginli\u011fi<\/td>\n150\u2013200 N<\/td>\nTungstenden daha d\u00fc\u015f\u00fck \u2014 Mo daha az yo\u011fundur ve daha yumu\u015fakt\u0131r<\/td>\n<\/tr>\n
Tel h\u0131z\u0131<\/td>\n35\u201355 m\/s<\/td>\nTungstenden biraz daha d\u00fc\u015f\u00fck \u00e7al\u0131\u015ft\u0131r\u0131labilir<\/td>\n<\/tr>\n
\u0130lerleme h\u0131z\u0131<\/td>\n0,5\u20131,5 mm\/dak<\/td>\nSaf tungstenden 2\u20133 kat daha h\u0131zl\u0131<\/td>\n<\/tr>\n
So\u011futucu<\/td>\nSu bazl\u0131 kesme s\u0131v\u0131s\u0131<\/td>\n\u00c7ift ama\u00e7l\u0131 hizmet eder: so\u011futma + oksidasyon bariyeri<\/td>\n<\/tr>\n
Kesme geni\u015fli\u011fi<\/td>\n0,45\u20130,55 mm<\/td>\nStandart<\/td>\n<\/tr>\n
Y\u00fczey p\u00fcr\u00fczl\u00fcl\u00fc\u011f\u00fc<\/td>\nRa 0,4\u20130,8 \u03bcm<\/td>\nTungsten'den daha iyi \u2014 Mo daha homojendir<\/td>\n<\/tr>\n
Kesme s\u0131cakl\u0131\u011f\u0131<\/td>\n\u0130\u015f par\u00e7as\u0131 \u00fczerinde < 40\u00b0C<\/td>\nKritik \u2014 500\u00b0C oksidasyon e\u015fi\u011finin olduk\u00e7a alt\u0131nda kalmal\u0131<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Molibden, refrakter bir seramikten \u00e7ok sert bir paslanmaz \u00e7elik gibi kesilir. Besleme h\u0131zlar\u0131 saf tungstenden 2\u20133 kat daha h\u0131zl\u0131d\u0131r ve oda s\u0131cakl\u0131\u011f\u0131nda \u00e7atlama riski \u00e7ok daha d\u00fc\u015f\u00fckt\u00fcr. Birincil kalite endi\u015fesi k\u0131r\u0131lma \u00f6nlemeden oksidasyon \u00f6nlemeye kayar \u2014 so\u011futucuyu ak\u0131\u015fkan tutun ve s\u0131cakl\u0131\u011f\u0131 d\u00fc\u015f\u00fcr\u00fcn.<\/p>\n

So\u011futucu ak\u0131\u015f\u0131 yetersiz oldu\u011funda molibden kesilmi\u015f y\u00fczeylerde ara s\u0131ra hafif gri bir y\u00fczey filmi g\u00f6rd\u00fck. Bu ince bir MoO2 tabakas\u0131d\u0131r (felaket tellal\u0131\u011f\u0131 yapan MoO3 de\u011fil, yine de istenmeyen bir durumdur). Kesme b\u00f6lgesinin k\u0131sa s\u00fcreli\u011fine 300\u00b0C'yi a\u015ft\u0131\u011f\u0131n\u0131 g\u00f6sterir. \u00c7\u00f6z\u00fcm: so\u011futucu ak\u0131\u015f h\u0131z\u0131n\u0131 art\u0131r\u0131n veya besleme h\u0131z\u0131n\u0131 azalt\u0131n.<\/p>\n

TZM Ala\u015f\u0131m\u0131 (Mo-0,5Ti-0,1Zr)<\/h3>\n

TZM, y\u00fcksek s\u0131cakl\u0131k uygulamalar\u0131 i\u00e7in i\u015f g\u00f6ren molibden ala\u015f\u0131m\u0131d\u0131r \u2014 f\u0131r\u0131n bile\u015fenleri, roket nozullar\u0131, d\u00f6vme kal\u0131plar\u0131. Titanyum ve zirkonyum katk\u0131lar\u0131 y\u00fcksek s\u0131cakl\u0131k dayan\u0131m\u0131n\u0131 ve yeniden kristalle\u015fme direncini art\u0131r\u0131r ancak saf Mo'ya k\u0131yasla oda s\u0131cakl\u0131\u011f\u0131 kesme davran\u0131\u015f\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde de\u011fi\u015ftirmez.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Parametre<\/th>\n\u00d6nerilen Aral\u0131k<\/th>\nNotlar<\/th>\n<\/tr>\n<\/thead>\n
Tel \u00e7ap\u0131<\/td>\n0,35\u20130,50 mm<\/td>\nSaf Mo ile ayn\u0131<\/td>\n<\/tr>\n
Tel gerginli\u011fi<\/td>\n160\u2013210 N<\/td>\nBiraz daha y\u00fcksek \u2014 TZM saf Mo'dan daha serttir<\/td>\n<\/tr>\n
Tel h\u0131z\u0131<\/td>\n40\u201355 m\/s<\/td>\nAyn\u0131 aral\u0131k<\/td>\n<\/tr>\n
\u0130lerleme h\u0131z\u0131<\/td>\n0,4\u20131,2 mm\/dak<\/td>\nDaha y\u00fcksek sertlik nedeniyle saf Mo'dan \u201320 daha yava\u015f<\/td>\n<\/tr>\n
So\u011futucu<\/td>\nSu bazl\u0131 kesme s\u0131v\u0131s\u0131<\/td>\nAyn\u0131 oksidasyon koruma gereksinimleri<\/td>\n<\/tr>\n
Y\u00fczey p\u00fcr\u00fczl\u00fcl\u00fc\u011f\u00fc<\/td>\nRa 0,5\u20131,0 \u03bcm<\/td>\nSaf Mo'dan biraz daha p\u00fcr\u00fczl\u00fc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

TZM'nin daha y\u00fcksek sertli\u011fi (saf Mo i\u00e7in HV 200\u2013280'e kar\u015f\u0131l\u0131k HV 250\u2013320) biraz daha yava\u015f besleme h\u0131zlar\u0131 ve m\u00fctevaz\u0131 \u00f6l\u00e7\u00fcde daha k\u0131sa tel \u00f6mr\u00fc anlam\u0131na gelir. Ancak kesme davran\u0131\u015f\u0131 \u00f6ng\u00f6r\u00fclebilirdir \u2014 saf tungsteni bu kadar sinir bozucu yapan ani \u00e7atlama ar\u0131zalar\u0131n\u0131 g\u00f6rmedik.<\/p>\n

Mo-La (Lantan Oksit Katk\u0131l\u0131 Molibden)<\/h3>\n

Mo-La elektronik ve ayd\u0131nlatma uygulamalar\u0131nda kullan\u0131l\u0131r. La2O3 par\u00e7ac\u0131klar\u0131 (tipik olarak %0,5\u20131,0 a\u011f\u0131rl\u0131k) tane yap\u0131s\u0131 boyunca da\u011f\u0131l\u0131r ve tane inceltici g\u00f6revi g\u00f6r\u00fcr. Kesme ama\u00e7l\u0131 olarak Mo-La, saf molibden ile neredeyse ayn\u0131 \u015fekilde davran\u0131r. Ayn\u0131 parametreleri kullan\u0131n.<\/p>\n

Tek fark: Mo-La, oksit par\u00e7ac\u0131klar\u0131 kesme y\u00fczeyinde mikro-\u00e7atlama b\u00f6lgeleri olu\u015fturdu\u011fu i\u00e7in biraz daha fazla kesme kal\u0131nt\u0131s\u0131 \u00fcretme e\u011filimindedir. Mo-La'y\u0131 toplu olarak \u00e7al\u0131\u015ft\u0131r\u0131yorsan\u0131z so\u011futucu filtreleme s\u0131kl\u0131\u011f\u0131n\u0131 art\u0131r\u0131n.<\/p>\n

Tungsten ve Molibden Pratikte Nas\u0131l Kar\u015f\u0131la\u015ft\u0131r\u0131l\u0131r?<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Fakt\u00f6r<\/th>\nSaf Tungsten<\/th>\nSaf Molibden<\/th>\n<\/tr>\n<\/thead>\n
\u0130lerleme h\u0131z\u0131<\/td>\n0,2\u20130,5 mm\/dak<\/td>\n0,5\u20131,5 mm\/dak<\/td>\n<\/tr>\n
\u00c7atlama riski<\/td>\n\u00c7ok y\u00fcksek (DBTT'nin alt\u0131nda)<\/td>\nD\u00fc\u015f\u00fck (oda s\u0131cakl\u0131\u011f\u0131nda DBTT'nin \u00fczerinde)<\/td>\n<\/tr>\n
Oksidasyon riski<\/td>\nOrta (400\u00b0C'nin \u00fczerinde)<\/td>\nY\u00fcksek (500\u00b0C'nin \u00fczerinde)<\/td>\n<\/tr>\n
Tel \u00f6mr\u00fc<\/td>\n3\u20135 g\u00fcn (8 saat\/g\u00fcn)<\/td>\n5\u20137 g\u00fcn (8 saat\/g\u00fcn)<\/td>\n<\/tr>\n
\u00d6n \u0131s\u0131tma gerekli<\/td>\nEvet (40\u201350\u00b0C \u00f6nerilir)<\/td>\nHay\u0131r<\/td>\n<\/tr>\n
20 mm kesit i\u00e7in kesme s\u00fcresi<\/td>\n40\u2013100 dakika<\/td>\n13\u201340 dakika<\/td>\n<\/tr>\n
Zorluk derecesi<\/td>\nKesti\u011fimiz en sert metal<\/td>\nOrta \u2014 Ti-6Al-4V ile kar\u015f\u0131la\u015ft\u0131r\u0131labilir<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Sonu\u00e7: molibdenin kesilmesi 2\u20133 kat daha h\u0131zl\u0131d\u0131r ve \u00e7atlama olas\u0131l\u0131\u011f\u0131 \u00e7ok daha d\u00fc\u015f\u00fckt\u00fcr. Uygulaman\u0131z her iki malzemeyi de kullanabiliyorsa, molibdenin i\u015flenmesi \u00e7ok daha kolayd\u0131r.<\/p>\n

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