Farantin karfe mai juriya

Farantin karfe mai jure sawa ya ƙunshi farantin karfe mai ƙarancin carbon da ƙaramin alloy wear-resistant Layer, tare da alloy wear-resistant Layer wanda ya ƙunshi 1/3 zuwa 1/2 na jimlar kauri. A lokacin aiki, tushen kayan yana ba da cikakkun kaddarorin kamar ƙarfi, ƙarfi, da ductility don tsayayya da ƙarfin waje, yayin da Layer-resistant Layer yana ba da juriya ga lalacewa ta musamman ga takamaiman yanayin aiki.

A gami da juriya lalacewa Layer da tushe abu suna metallurgically bonded. Yin amfani da kayan aiki na musamman da tsarin walda mai sarrafa kansa, ƙarfin ƙarfi mai ƙarfi, wayoyi gami da garkuwa da kai ana haɗa su daidai gwargwado zuwa kayan tushe. Rukunin da aka haɗa na iya zama ɗaya, biyu, ko ma da yawa. Saboda bambance-bambancen ma'auni na raguwar gami, tsatsauran ra'ayi iri ɗaya suna haɓaka yayin aikin lamination, alamar faranti mai jure lalacewa.

Alamar da ba ta iya jurewa ta musamman ta ƙunshi chromium gami, tare da sauran abubuwa masu haɗawa kamar manganese, molybdenum, niobium, da ƙara nickel. The carbides a cikin metallographic tsarin ne fibrous, tare da zaruruwa daidaitacce perpendicular zuwa saman. Microhardness na carbide na iya kaiwa sama da HV 1700-2000, kuma taurin saman zai iya kaiwa HRC 58-62. Alloy carbides suna da tsayi sosai a yanayin zafi mai girma, suna riƙe da ƙarfi mai ƙarfi da kyakkyawan juriya na iskar shaka, yana ba da damar cikakken aiki a cikin yanayin zafi har zuwa 500 ° C.

Layin da ke jure lalacewa zai iya fitowa a cikin kunkuntar (2.5-3.5mm) ko fadi (8-12mm), da lankwasa (S da W). Da farko sun ƙunshi chromium alloys, waɗannan gami kuma sun ƙunshi manganese, molybdenum, niobium, nickel, da boron. Ana rarraba carbides a cikin tsarin fibrous a cikin tsarin metallographic, tare da zaruruwan da ke gudana daidai da saman. Tare da abun ciki na carbide na 40-60%, microhardness na iya kaiwa sama da HV1700, kuma taurin saman zai iya kaiwa HRC58-62. Farantin karfe mai jure sawa an kasu kashi uku: manufa ta gaba ɗaya, juriya da zafi mai zafi. Jimlar kauri na faranti mai jure lalacewa na iya zama ƙanana kamar 5.5 (2.5+3) mm kuma lokacin farin ciki kamar 30 (15+15) mm. Za a iya jujjuya faranti na ƙarfe da ke jure sawa a cikin bututu masu jure lalacewa tare da mafi ƙarancin diamita na DN200, kuma ana iya sarrafa su zuwa gwiwar hannu mai jure lalacewa, tela mai jure lalacewa da masu rage lalacewa.