Theknoloji ea tlhahiso
Ts'ebetso ea tlhahiso ea mandrel bar e na le mehato e mengata e rarahaneng le e nepahetseng. Ea pele ke ho qhibiliha ha thepa, e leng se tiisang hore ho tšoana le ho hloeka ha bar ea mantlha. Ebe ho qhekella, ka mokhoa oa ho qhekella, lijo-thollo tsa thepa li hloekisoa, kahoo li ntlafatsa thepa ea eona ea mechine le bophelo ba tšebeletso. The mandrel forged hloka kalafo mocheso, tshebetso e tlosa khatello ea kelello ka hare le ho eketsa thatafala le ho apara ho hanyetsa mandrel. Ka mor'a moo, machining, ho akarelletsa le ho reteleha, ho sila le ts'ebetso e 'ngoe, ho etsa hore mandrel e finyelle litlhoko tsa ho nepahala ha moralo. Mohato oa ho qetela ke kalafo ea holim'a metsi, joalo ka ho tima, ho chesa, joalo-joalo, ho matlafatsa ho hanyetsa ha kutu le ho thatafala ha holim'a mandrel.
Sebaka sa ts'ebeliso le litlhaloso
Mandrel bar e sebelisoa haholo mefuteng e fapaneng ea liloala tse roalang, joalo ka MPM (multi-pass rolling mill), PQF (high precision rolling mill) le FQM (fast rolling mill). Mefuta ea eona e fapaneng ea litlhaloso, ho tloha ho Φ80 mm ho ea ho 500 mm ka bophara, bolelele ho tloha ho 2500 mm ho ea ho 17,500 mm, e ka finyella litlhoko tse fapaneng tsa tlhahiso.
Khetho ea lintho tse bonahalang
Thepa ea mandrel bar hangata ke AISI H13 kapa maemo a naha a 4Cr5MoSiV1 le 36CrNiMoV6. Lisebelisoa tsena li na le thepa e babatsehang ea mocheso o phahameng le matla a mochine ho boloka botsitso mocheso o phahameng le maemo a phahameng a khatello. The non-metallic inclusions ka mandrel lintho tse bonahalang ho hlokahala hore e se fetang 1.0 sehlopheng A, B, C le D, 'me boholo ba lijo-thollo lokela ho fihla 8 sehlopheng kapa ka holimo. Litlhoko tsena tse thata tsa thepa li netefatsa boleng bo holimo le ho ts'epahala ha bar ea mandrel.
Thepa ea mochini
Thepa e khothalletsoang ea mochini oa mandrel bar ea thepa ea H13 ke e latelang: Bakeng sa mandrel e bophara ba ≤200 mm, matla a tensile ke 1127-1274 mpa, matla a tlhahiso ke ≥931MPa, elongation ke ≥8%, karolo e fokotseha. ke ≥25%, ts'ebetso ea ts'ebetso ke ≥20J, 'me boima ke HB350-390; Bakeng sa mandrel ka bophara> 200 mm, matla a eona a thata ke 1078-1274 mpa, matla a lihlahisoa ke ≥882MPa, elongation ke ≥8%, shrinkage ea karolo ke ≥25%, ts'ebetso ea ts'ebetso ke ≥20J, boima ke HB330-375.
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Nako ea poso: Jun-19-2024
