Matsakaici da ƙananan bututun ƙarfe da aka yi a China
(1) Gb3087-82 bututun ƙarfe mara nauyi don ƙananan da matsakaicin matsa lamba. Gwajin tensile zai bi GB/t228-87, gwajin hydrostatic tare da GB/t241-90, gwajin flattening tare da GB/t246-97, gwajin flaring tare da GB/t242-97 da gwajin lankwasa sanyi tare da gb244-97.
(2) Gb5310-95 bututun ƙarfe mara nauyi don manyan tukunyar jirgi. Gwajin tensile, gwajin hydraulic da gwajin flattening iri ɗaya ne da waɗanda aka ƙayyade a gb3087-82; Gwajin tasiri bisa ga gb229-94, gwajin flaring bisa ga GB/t242-97 da gwajin girman hatsi bisa ga Yb/t5148-93; Microstructure dubawa zai kasance daidai da gb13298-91, decarburized Layer dubawa zai kasance daidai da gb224-87, da ultrasonic dubawa zai kasance daidai da GB / t5777-96.
(3) Binciken aikin jiki da fihirisar bututun tukunyar jirgi da aka shigo da su za a gudanar da su daidai da ka'idodin da aka ƙayyade a cikin kwangilar (1) Babban ƙasashen da ke shigo da bututun tukunyar jirgi sune Japan da Jamus. Ƙayyadaddun samfuran da ake shigo da su akai-akai sune 15914.2mm; 2734.0mm; 219.110.0mm; 41975 mm; 406.460mm, da dai sauransu The m takamaiman ne 31.84.5mm, da kuma tsawon ne kullum 5 ~ 8m.
(2) A cikin shari'ar da'awar shigo da kaya, bututun tukunyar jirgi na ST45 da aka shigo da su daga masana'antar bututun ƙarfe na Mannesmann a Jamus an gano suna da lahani na ciki wanda ya wuce ƙa'idodin shuka da ƙa'idodin ƙungiyar ƙarfe da ƙarfe na Jamus.
(3) Alloy karfe bututun shigo da daga Jamus ne yafi 34CrMo4 da 12CrMoV. Irin wannan bututun ƙarfe yana da kyakkyawan aiki mai zafi kuma galibi ana amfani dashi azaman bututun ƙarfe don tukunyar zafi mai zafi.
(4) Akwai da yawa gami bututu shigo da daga Japan, tare da bayani dalla-dalla na 426.012mm 5 ~ 8m; 152.48.0mm12m; 89.110.0mm6m; 101.610.0mm12m; 114.38.0mm6m; 127.08.0mm9m, da dai sauransu Aiwatar da Jafananci masana'antu misali jisg3458, da kuma karfe sa ne stpa25. Irin wannan bututun ƙarfe galibi ana amfani da shi azaman mai tallafawa bututun superalloy. Babban matsi maras nauyi bututun bututu ne mai nau'in bututu maras kyau. Hanyar masana'anta iri ɗaya ce da na bututu maras kyau, amma akwai ƙaƙƙarfan buƙatu don ƙimar ƙarfe da ake amfani da shi wajen kera bututun ƙarfe. Dangane da zafin sabis, an raba shi zuwa bututun tukunyar jirgi na gabaɗaya da bututu mai matsa lamba mai ƙarfi.
① A sabis zafin jiki na high-matsi sumul karfe bututu ne a kasa 450 ℃, da kuma gida bututu ne yafi Ya sanya daga No. 10 da kuma No. 20 carbon karfe zafi-birgima bututu ko sanyi kõma bututu.
② Babban bututun ƙarfe mara ƙarfi yana sau da yawa a cikin babban zafin jiki da yanayin matsa lamba. Bututun zai zama oxidized da lalata a ƙarƙashin aikin iskar gas mai zafi mai zafi da tururi. Ana buƙatar bututun ƙarfe don samun ƙarfi mai ɗorewa, babban anti-oxidation da aikin lalata da ingantaccen tsarin tsarin.
