Sidee loo doortaa saamiga been abuurka ah?

Marka saamiga been-abuurka ahi uu kordho, daloollada gudaha waa la cufan iyo sida-kabka dendrites-ka ayaa jabay, taasoo keentay horumar la taaban karo oo ku saabsan sifooyinka farsamada ee dhererka iyo leexashada. Laakiin marka saamiga qaybta been-abuurka ee elongation uu ka weyn yahay 3-4, maaddaama saamiga qaybta been-abuurka ahi uu kordho, qaabab cad oo fiber ah ayaa la sameeyay, taasoo keenaysa hoos u dhac fiiqan oo ku saabsan tusmada caaga ah ee guryaha farsamada transverse, taasoo horseedaysa anisotropy ee been-abuurka. Haddii saamiga qaybta been-abuurka ahi aad u yar yahay, been-abuurku ma buuxin karo shuruudaha waxqabadka. Haddii ay aad u weyn tahay, waxay kordhisaa culeyska shaqada been abuurka waxayna sidoo kale keentaa anisotropy. Sidaa darteed, xulashada saamiga been-abuurka ah ee macquulka ah waa arrin muhiim ah, waana in sidoo kale la tixgeliyaa arrinta qallafsanaanta aan sinnayn xilliga been-abuurka.

Saamiga been-abuurka waxaa badanaa lagu qiyaasaa heerka qallooca inta lagu jiro dhererka. Waxay loola jeedaa saamiga dhererka iyo dhexroorka alaabta la samaynayo, ama saamiga aagga is-dhaafka ah ee alaabta ceeriin (ama billet prefabricated) ka hor inta aan la been-abuurin aagga is-dhaafka ah ee alaabta la dhammeeyey ka dib markii la been abuurtay. Cabbirka saamiga been-abuurka ahi wuxuu saameeyaa sifooyinka farsamada ee biraha iyo tayada foornada. Kordhinta saamiga been-abuurka ayaa faa'iido u leh hagaajinta qaab-dhismeedka yar-yar iyo sifooyinka biraha, laakiin saamiga xad-dhaafka ah sidoo kale faa'iido ma leh.

Mabda'a xulashada saamiga been-abuurka ayaa ah in la doorto mid ka yar intii suurtagal ah iyadoo la hubinayo shuruudaha kala duwan ee been-abuurka. Saamiga been abuurka guud ahaan waxaa lagu go'aamiyaa iyadoo loo eegayo shuruudaha soo socda:

1. Marka tayada sare ee kaarboon qaabdhismeedka birta ah iyo birta qaab dhismeedka alwaax ah ayaa si xor ah loogu been abuurtay dubbe: forgings nooca shaft, waxay si toos ah u been abuurtay biraha birta, iyo saamiga been abuur ah lagu xisaabiyaa ku salaysan qaybta ugu weyn waa in ay ahaataa ≥ 3; Saamiga been-abuurka ah ee lagu xisaabay iyadoo lagu salaynayo garabyada ama qaybaha kale ee soo baxaya waa inay ahaadaan ≥ 1.75; Markaad isticmaalayso birta birta ah ama alaabta duuban, saamiga been-abuurka ee la xisaabiyay ee ku salaysan qaybta ugu muhiimsan waa ≥ 1.5; Saamiga been-abuurka ah ee lagu xisaabay iyadoo lagu salaynayo garabyada ama qaybaha kale ee soo baxaya waa inuu ahaadaa ≥ 1.3. Forgings giraanta, saamiga been abuurka guud ahaan waa inuu noqdaa ≥ 3. Wixii disc forgings, waxay si toos ah looga been abuurtay birta, oo leh saamiga been abuurka ah ee ≥ 3; Marar kale, saamiga been abuurka ee xanaaqa guud ahaan waa inuu noqdaa> 3, laakiin habka ugu dambeeya waa inuu noqdaa>.

2. Dharka birta birta ah ee birta sare leh ma aha oo kaliya inay u baahan tahay in la baabi'iyo cilladaha qaabdhismeedka, laakiin sidoo kale waxay u baahan tahay qaybinta isku midka ah ee carbides, sidaas darteed waa in la qaataa saamiga weyn ee been-abuurka ah. Saamiga been-abuurka ah ee birta aan-xawaaraha ahayn waxaa loo dooran karaa sida 4-6, halka saamiga been-abuurka ee birta-xawaaraha sare loo baahan yahay inuu noqdo 5-12.