{"id":21406,"date":"2022-09-19T09:38:23","date_gmt":"2022-09-19T01:38:23","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=21406"},"modified":"2022-09-19T09:39:36","modified_gmt":"2022-09-19T01:39:36","slug":"4-key-points-you-may-need-to-know-about-cryogenic-treatment-process","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/tr\/kriyojenik-tedavi-sureci-hakkinda-bilmeniz-gereken-4-anahtar-nokta\/","title":{"rendered":"Kriyojenik Tedavi S\u00fcreci hakk\u0131nda bilmeniz gerekebilecek 4 \u00f6nemli nokta"},"content":{"rendered":"
\n

1.Kriyojenik Ar\u0131tma S\u00fcrecinin Geli\u015ftirilmesi<\/h2>\n\n\n\n

Cryogenic treatment usually adopts liquid nitrogen cooling, which can cool the workpiece to below – 190 \u2103. The microstructure of the treated material changes at low temperature, and some properties are improved. Cryogenic treatment was first proposed by the former Soviet Union in 1939. It was not until the 1960s that the United States applied the cryogenic treatment technology to the industry and began to use it mainly in the aviation field. In the 1970s, it expanded to the machinery manufacturing field.<\/p>\n\n\n\n

Farkl\u0131 so\u011futma y\u00f6ntemlerine g\u00f6re s\u0131v\u0131 y\u00f6ntemi ve gaz y\u00f6ntemine ayr\u0131labilir. S\u0131v\u0131 y\u00f6ntemi, i\u015f par\u00e7as\u0131n\u0131n s\u0131v\u0131 nitrojen s\u0131cakl\u0131\u011f\u0131na so\u011futulmas\u0131 i\u00e7in malzemenin veya i\u015f par\u00e7as\u0131n\u0131n do\u011frudan s\u0131v\u0131 nitrojene dald\u0131r\u0131lmas\u0131 ve i\u015f par\u00e7as\u0131n\u0131n belirli bir s\u00fcre bu s\u0131cakl\u0131kta tutulmas\u0131, ard\u0131ndan d\u0131\u015far\u0131 al\u0131nmas\u0131 ve belirli bir s\u0131cakl\u0131\u011fa \u0131s\u0131t\u0131lmas\u0131 anlam\u0131na gelir. . \u0130\u015f par\u00e7as\u0131 \u00fczerinde b\u00fcy\u00fck bir termal etkiye sahip olan ve genellikle i\u015f par\u00e7as\u0131na zarar vermesinin muhtemel oldu\u011funa inan\u0131lan bu \u015fekilde s\u0131cakl\u0131k art\u0131\u015f ve d\u00fc\u015f\u00fc\u015f h\u0131z\u0131n\u0131 kontrol etmek zordur. S\u0131v\u0131 nitrojen tank\u0131 gibi kriyojenik ekipman nispeten basittir.<\/p>\n\n\n\n

2. Kriyojenik ar\u0131tman\u0131n gaz y\u00f6ntemi<\/h2>\n\n\n\n

The gas principle is to cool by the gasification latent heat of liquid nitrogen (about 199.54kJ\/kg) and the heat absorption of low-temperature nitrogen. The gas method can make the cryogenic temperature reach – 190 \u2103, so that the cryogenic nitrogen can contact the materials. Through convection heat exchange, the nitrogen can be vaporized in the cryogenic box after being ejected from the nozzle. The workpiece can be cooled by the latent heat of gasification and the heat absorption of cryogenic nitrogen. By controlling the input of liquid nitrogen to control the cooling rate, the cryogenic treatment temperature can be automatically adjusted and accurately controlled, and the thermal shock effect is small, so is the possibility of cracking.<\/p>\n\n\n\n

\u015eu anda, gaz y\u00f6ntemi, uygulamas\u0131nda ara\u015ft\u0131rmac\u0131lar taraf\u0131ndan geni\u015f \u00e7apta tan\u0131nmaktad\u0131r ve so\u011futma ekipman\u0131, esas olarak kontrol edilebilir s\u0131cakl\u0131\u011fa sahip programlanabilir bir kriyojenik kutudur. Kriyojenik i\u015flem, \u00f6nemli ekonomik faydalar ve pazar beklentileri ile demirli metallerin, demir d\u0131\u015f\u0131 metallerin, metal ala\u015f\u0131mlar\u0131n\u0131n ve di\u011fer malzemelerin hizmet \u00f6mr\u00fcn\u00fc, a\u015f\u0131nma direncini ve boyutsal kararl\u0131l\u0131\u011f\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde iyile\u015ftirebilir.<\/p>\n\n\n\n

\u00c7imentolu karb\u00fcr\u00fcn kriyojenik teknolojisi ilk olarak 1980'lerde ve 1990'larda rapor edildi. Mekanik teknoloji<\/em> 1981 y\u0131l\u0131nda Japonya ve Modern Makine At\u00f6lyesi<\/em> 1992'de Amerika Birle\u015fik Devletleri'nde, kriyojenik i\u015flemden sonra \u00e7imentolu karb\u00fcrlerin performans\u0131n\u0131n \u00f6nemli \u00f6l\u00e7\u00fcde artt\u0131\u011f\u0131n\u0131 bildirdi. 1970'lerden bu yana, yurtd\u0131\u015f\u0131nda kriyojenik tedavi \u00fczerine yap\u0131lan ara\u015ft\u0131rmalar verimli olmu\u015ftur. Eski Sovyetler Birli\u011fi, Amerika Birle\u015fik Devletleri, Japonya ve di\u011fer \u00fclkeler, aletlerin ve kal\u0131plar\u0131n hizmet \u00f6mr\u00fcn\u00fc, i\u015f par\u00e7alar\u0131n\u0131n a\u015f\u0131nma direncini ve boyutsal kararl\u0131l\u0131\u011f\u0131 iyile\u015ftirmek i\u00e7in kriyojenik i\u015flemi ba\u015far\u0131yla kullanm\u0131\u015ft\u0131r.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

3. Kriyojenik ar\u0131tman\u0131n g\u00fc\u00e7lendirme mekanizmas\u0131<\/h2>\n\n\n\n

Metal faz takviyesi.<\/h3>\n\n\n\n

Semente karb\u00fcrlerdeki Co, fcc kristal yap\u0131s\u0131na \u03b1 Faz\u0131na (fcc) ve yak\u0131n paketlenmi\u015f alt\u0131gen kristal yap\u0131ya \u03b5 Faz\u0131na (hcp) sahiptir. \u03b5- Co oran\u0131 \u03b1- Co, k\u00fc\u00e7\u00fck s\u00fcrt\u00fcnme katsay\u0131s\u0131na ve g\u00fc\u00e7l\u00fc a\u015f\u0131nma direncine sahiptir. 417 \u2103'nin \u00fczerinde \u03b1 Faz\u0131n serbest enerjisi d\u00fc\u015f\u00fckt\u00fcr, dolay\u0131s\u0131yla Co \u03b1 Faz formu mevcuttur. 417 \u2103'nin alt\u0131nda \u03b5 Faz\u0131n d\u00fc\u015f\u00fck serbest enerjisi, y\u00fcksek s\u0131cakl\u0131kta kararl\u0131 faz \u03b1 Faz\u0131n d\u00fc\u015f\u00fck serbest enerjiye ge\u00e7i\u015fi \u03b5 Faz. Ancak, WC partik\u00fclleri ve \u03b1 nedeniyle Fazda kat\u0131 \u00e7\u00f6zelti heteroatomlar\u0131n\u0131n varl\u0131\u011f\u0131, faz ge\u00e7i\u015fi \u00fczerinde daha b\u00fcy\u00fck bir k\u0131s\u0131tlamaya sahiptir, bu da \u03b1 \u2192 \u03b5 yapar. \u03b5 a\u015famas\u0131na ge\u00e7er. Kriyojenik i\u015flem b\u00fcy\u00fck \u00f6l\u00e7\u00fcde artt\u0131r\u0131labilir \u03b1 Ve \u03b5 \u0130ki fazl\u0131 serbest enerji fark\u0131, b\u00f6ylece faz de\u011fi\u015fiminin itici g\u00fcc\u00fc artar \u03b5 Faz de\u011fi\u015fim de\u011fi\u015fkeni. Kriyojenik i\u015flemden sonra semente karb\u00fcr i\u00e7in, Co matrisindeki sert faz\u0131 art\u0131rabilen, dislokasyon hareketini engelleyebilen ve ikinci faz\u0131n g\u00fc\u00e7lendirilmesinde rol oynayabilen, \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fcn azalmas\u0131 nedeniyle Co'da \u00e7\u00f6z\u00fcnen baz\u0131 atomlar bile\u015fik \u015feklinde \u00e7\u00f6ker. par\u00e7ac\u0131klar.<\/p>\n\n\n\n

Y\u00fczey art\u0131k gerilmesinin g\u00fc\u00e7lendirilmesi.<\/h3>\n\n\n\n

Kriyojenik i\u015flemden sonraki \u00e7al\u0131\u015fma, y\u00fczey art\u0131k bas\u0131n\u00e7 stresinin artt\u0131\u011f\u0131n\u0131 g\u00f6stermektedir. Bir\u00e7ok ara\u015ft\u0131rmac\u0131, y\u00fczey tabakas\u0131ndaki belirli bir art\u0131k bas\u0131n\u00e7 gerilmesinin hizmet \u00f6mr\u00fcn\u00fc b\u00fcy\u00fck \u00f6l\u00e7\u00fcde art\u0131rabilece\u011fine inanmaktad\u0131r. Sinterlemeden sonra sinterlenmi\u015f karb\u00fcr\u00fcn so\u011futma i\u015flemi s\u0131ras\u0131nda, ba\u011flanma faz\u0131 Co \u00e7ekme gerilimine, WC par\u00e7ac\u0131klar\u0131 ise bas\u0131n\u00e7 gerilimine maruz kal\u0131r. \u00c7ekme geriliminin Co'ya b\u00fcy\u00fck zarar\u0131 vard\u0131r. Bu nedenle, baz\u0131 ara\u015ft\u0131rmac\u0131lar derin so\u011futman\u0131n neden oldu\u011fu y\u00fczey bas\u0131n\u00e7 stresindeki art\u0131\u015f\u0131n, sinterleme sonras\u0131 so\u011futma i\u015flemi s\u0131ras\u0131nda ba\u011flama faz\u0131 taraf\u0131ndan \u00fcretilen \u00e7ekme gerilimini yava\u015flatt\u0131\u011f\u0131na veya k\u0131smen dengeledi\u011fine, hatta onu ayarlad\u0131\u011f\u0131na inanmaktad\u0131r. bas\u0131n\u00e7 stresi, mikro \u00e7atlaklar\u0131n olu\u015fumunu azalt\u0131r.<\/p>\n\n\n\n

Di\u011fer g\u00fc\u00e7lendirme mekanizmalar\u0131<\/h3>\n\n\n\n

\u03b7 Faz par\u00e7ac\u0131klar\u0131n\u0131n WC par\u00e7ac\u0131klar\u0131 ile birlikte matrisi daha kompakt ve sa\u011flam hale getirdi\u011fine ve \u03b7 nedeniyle faz\u0131n olu\u015fumunun matristeki Co'yu t\u00fcketti\u011fine inan\u0131lmaktad\u0131r. Ba\u011flanma faz\u0131ndaki Co i\u00e7eri\u011finin azalmas\u0131, malzemenin genel termal iletkenli\u011fini artt\u0131r\u0131r ve karb\u00fcr partik\u00fcl boyutunun ve kom\u015fulu\u011fun artmas\u0131 da matrisin termal iletkenli\u011fini artt\u0131r\u0131r. Termal iletkenli\u011fin artmas\u0131 nedeniyle, tak\u0131m ve kal\u0131p u\u00e7lar\u0131n\u0131n \u0131s\u0131 da\u011f\u0131l\u0131m\u0131 daha h\u0131zl\u0131d\u0131r; Tak\u0131mlar\u0131n ve kal\u0131plar\u0131n a\u015f\u0131nma direnci ve y\u00fcksek s\u0131cakl\u0131k sertli\u011fi iyile\u015ftirilir. Di\u011ferleri, kriyojenik i\u015flemden sonra, Co'nun b\u00fcz\u00fclmesi ve yo\u011funla\u015fmas\u0131 nedeniyle, Co'nun WC par\u00e7ac\u0131klar\u0131n\u0131 tutmadaki kesin rol\u00fcn\u00fcn g\u00fc\u00e7lendi\u011fine inanmaktad\u0131r. Fizik\u00e7iler, derin so\u011futman\u0131n metallerin atomlar\u0131n\u0131n ve molek\u00fcllerinin yap\u0131s\u0131n\u0131 de\u011fi\u015ftirdi\u011fine inan\u0131rlar.<\/p>\n\n\n\n

4.Kriyojenik Tedavi ile YG20 So\u011fuk Ba\u015fl\u0131k Kal\u0131b\u0131 \u00d6rne\u011fi<\/h2>\n\n\n\n

YG20 so\u011fuk iskele kal\u0131p kriyojenik ar\u0131tman\u0131n \u00e7al\u0131\u015fma ad\u0131mlar\u0131:<\/p>\n\n\n\n

(1) Sinterlenmi\u015f so\u011fuk ba\u015fl\u0131k kal\u0131b\u0131n\u0131 kriyojenik ar\u0131tma f\u0131r\u0131n\u0131na koyun;<\/p>\n\n\n\n

(2) Start the cryogenic tempering integrated furnace, open the liquid nitrogen, reduce it to – 60 \u2103 at a certain rate, and keep the temperature for 1h;<\/p>\n\n\n\n

(3) Reduce to – 120 \u2103 at a certain rate, and keep the temperature for 2h;<\/p>\n\n\n\n

(4) Reduce the temperature to – 190 \u2103 at a certain cooling rate, and keep the temperature for 4-8h;<\/p>\n\n\n\n

(5) Is\u0131 korumas\u0131ndan sonra, s\u0131cakl\u0131k 4 saat boyunca 0,5 \u2103\/dk'ya g\u00f6re 180 \u2103'ye y\u00fckseltilecektir.<\/p>\n\n\n\n

(6) Program ekipman\u0131 tamamland\u0131ktan sonra, otomatik olarak kapat\u0131lacak ve do\u011fal olarak oda s\u0131cakl\u0131\u011f\u0131na so\u011futulacakt\u0131r.<\/p>\n\n\n\n

Sonu\u00e7: YG20 so\u011fuk \u015fi\u015firme kal\u0131b\u0131, kriyojenik i\u015flem olmadan ve kriyojenik i\u015flemden sonra so\u011fuk ba\u015fl\u0131 \u03a6 3.8 Karbon \u00e7elik vidal\u0131 \u00e7ubuk, sonu\u00e7lar, kriyojenik i\u015flemden sonra kal\u0131b\u0131n hizmet \u00f6mr\u00fcn\u00fcn, kriyojenik i\u015flem yap\u0131lmayan kal\u0131ba g\u00f6re 15%'den daha uzun oldu\u011funu g\u00f6stermektedir. .\"\"<\/p>\n\n\n\n

\"\"
(a) YG20 kriyojenik tedaviden \u00f6nce
(b) YG20 kriyojenik tedaviden sonra<\/figcaption><\/figure>\n\n\n\n

Kriyojenik i\u015flemden \u00f6ncekine k\u0131yasla, kriyojenik i\u015flemden sonra YG20'de y\u00fcz merkezli k\u00fcbik kobalt\u0131n (fcc) \u00f6nemli \u00f6l\u00e7\u00fcde azald\u0131\u011f\u0131 g\u00f6r\u00fclebilir, \u03b5- Co (hcp)'deki belirgin art\u0131\u015f ayn\u0131 zamanda a\u015f\u0131nma direncinin ve \u00e7imentolu karb\u00fcrlerin kapsaml\u0131 \u00f6zellikleri.<\/p>\n\n\n\n

5. Kriyojenik ar\u0131tma s\u00fcrecinin s\u0131n\u0131rlamalar\u0131<\/h2>\n\n\n\n

Amerika Birle\u015fik Devletleri'ndeki bir alet ve kal\u0131p \u015firketinin pratik uygulama sonu\u00e7lar\u0131, i\u015flemden sonra semente karb\u00fcr u\u00e7lar\u0131n hizmet \u00f6mr\u00fcn\u00fcn 2~8 kat artt\u0131\u011f\u0131n\u0131, i\u015flemden sonra sinterlenmi\u015f karb\u00fcr tel \u00e7ekme kal\u0131plar\u0131n\u0131n pansuman d\u00f6ng\u00fcs\u00fcn\u00fcn birka\u00e7 hafta uzat\u0131ld\u0131\u011f\u0131n\u0131 g\u00f6stermektedir. birka\u00e7 aya kadar. 1990'larda, semente karb\u00fcr\u00fcn kriyojenik teknolojisi \u00fczerine yerli ara\u015ft\u0131rmalar yap\u0131ld\u0131 ve baz\u0131 ara\u015ft\u0131rma sonu\u00e7lar\u0131na ula\u015f\u0131ld\u0131.<\/p>\n\n\n\n

Genel olarak, semente karb\u00fcr\u00fcn kriyojenik ar\u0131tma teknolojisi \u00fczerine ara\u015ft\u0131rmalar daha az geli\u015fmi\u015ftir ve \u015fu anda sistematik de\u011fildir ve elde edilen sonu\u00e7lar da tutars\u0131zd\u0131r, bu da ara\u015ft\u0131rmac\u0131lar taraf\u0131ndan daha derinlemesine ara\u015ft\u0131r\u0131lmas\u0131n\u0131 gerektirir. Mevcut ara\u015ft\u0131rma verilerine g\u00f6re, kriyojenik i\u015flem esas olarak semente karb\u00fcr\u00fcn a\u015f\u0131nma direncini ve hizmet \u00f6mr\u00fcn\u00fc iyile\u015ftirir, ancak fiziksel \u00f6zellikler \u00fczerinde belirgin bir etkisi yoktur.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

1.Development of Cryogenic Treatment Process Cryogenic treatment usually adopts liquid nitrogen cooling, which can cool the workpiece to below – 190 \u2103. The microstructure of the treated material changes at low temperature, and some properties are improved. Cryogenic treatment was first proposed by the former Soviet Union in 1939. It was not until the 1960s…<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts\/21406"}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/comments?post=21406"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/posts\/21406\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/media?parent=21406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/categories?post=21406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/tr\/wp-json\/wp\/v2\/tags?post=21406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}