Manyan Diamita Bakin Karfe Washers

Ƙaddamar da kaddarorin inji na Manyan Diamita Bakin Karfe Washers a ƙarƙashin yanayin zafin jiki yana da mahimmanci a cikin zaɓin su. Halayensu na raɗaɗin zafin jiki kai tsaye yana shafar dogon lokaci{1} aikin rufewar haɗin gwiwa a cikin zazzagewar zafi. Dangane da hanyar gwajin ASTM E139 don shakatawa na kayan ƙarfe, a ƙarƙashin yanayin 350 digiri Celsius da danniya na farko na 200 MPa, ƙimar shakatawa na 316L bakin karfe bayan ci gaba da ɗaukar nauyi na sa'o'i 1,000 shine kusan 12% na ƙimar farko, wato, ragowar damuwa har yanzu ana kiyaye shi a kusan 17 MPa. Wannan matakin damuwa ya isa don tabbatar da cewa matsi takamaiman matsi na fuskar haɗin flange bai yi ƙasa da mahimmancin ƙimar da ƙira ke buƙata ba. Dangane da girman- zafin da ake yarda da danniya na kayan a cikin Juzu'i II, Sashe na D na ASME Boiler da Lambobin Matsawa, ƙimar ƙarfin ƙarfin baƙin ƙarfe na 316L a digiri 400 Celsius shine 69 MPa, wanda shine kusan 60% na ƙimar zafin ɗakin na 115 MPa. Don haka, ƙirar manyan gaskets diamita{20} Ana buƙatar ƙara kauri daidai gwargwadon zafin aiki. Yawancin lokaci, ana buƙatar ƙara kauri da kashi 10% zuwa 15% na kowane haɓakar digiri 100 don rama raguwar ƙarfin samar da kayan abu a yanayin zafi mai yawa da kuma tabbatar da cewa gasket yana da isasshiyar amintaccen gefen haɗin gwiwa mai girma - zafin bututun flanges da shugabannin masu musayar zafi.

Ƙarƙashin aikin haɗin gwiwar yanayin ƙarancin zafin jiki da maɓalli daban-daban, tasirin tauri da juriya na manyan wankin bakin karfe{0} diamita sun zama maɓalli masu mahimmanci waɗanda ke ƙayyadad da aikin su. Dangane da hanyar gwajin tasiri na ASTM E23 Charpy, tasirin tasirin ƙarfin ƙarfe na 316L na bakin karfe na iya kaiwa fiye da joules 200 a yanayin zafin ruwa na nitrogen na 196 digiri Celsius, yana nuna cewa tsarin sa na austenite baya jurewa ductile -zuwa {{7} canzawa a ƙarƙashin yanayin cryogenic. Wannan halayyar ta sa wannan gasket ya dace da haɗin haɗin flange na tankunan ajiya na iskar gas da kayan aikin raba iska. Dangane da hanyar gwajin gajiyawar axial ASTM E466, babban gaskat ɗin diamita mai kauri na mm 6 da diamita na waje na 180 mm ana shigar da lodin keken keke tare da girman danniya na 120 MPa. Bayan zagayowar miliyan biyu, ba a sami tsagewar gajiya a saman gasket ko gefen rami na ciki ba. Ƙarfin gajiyarsa shine kusan 43% na ƙarfin ƙarfin 280 MPa. Ana ba da mai wanki tare da raƙuman raƙuman ruwa na annular a kan saman mai ɗaukar hoto a cikin lamba tare da shugaban ƙwanƙwasa, tare da zurfin rami na 0.1 mm da tazara na 0.5 mm, bisa ga hanyar DIN 946 friction coefficient ma'auni, wannan microstructure na iya haɓaka ƙimar juzu'i na farfajiyar ƙasa a ƙarƙashin yanayin juzu'in bushewa daga 0.18 zuwa 0. girgiza. A lokaci guda kuma, tsagi na iya ɗaukar adadin maiko, yana ba da kwanciyar hankali a cikin ingantattun kayan aiki waɗanda ke buƙatar sarrafa madaidaicin magudanar ruwa. Don haka, ana amfani da wannan injin wanki sosai a cikin tsarin ɗorawa na shingen kayan aikin bincike na polar kimiyya da zurfi{27}} ƙwanƙolin matsi na teku.

Sami zane daga abokan ciniki ko samar da zane dangane da samfuran su ko ƙayyadaddun bayanai.

Zane-zane, albarkatun kayan samfur, jiyya na saman, da sauran cikakkun bayanai an tabbatar da su daga bangarorin biyu.

Samar da ƙididdiga, tabbatar da cewa adadin tsari daidai ne, kuma ya haɗa da duk cikakkun bayanai masu dacewa,

kamar sharuɗɗan biyan kuɗi, sharuɗɗan ciniki, nau'in marufi, da sauransu.

Bi ainihin zane-zane da samfurori daidai lokacin samar da kaya.

An tattara shi a hankali kuma an kai shi ga abokan ciniki bayan dubawa ta ƙarshe.

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