30CrMo gami karfe bututu

Takaitaccen Bayani:

Bayanin samarwa:

Outer diamita na karfe bututu 20-426

Karfe bututu bango kauri na 20-426

Gabatarwar samfur:

① Lambobin biyu a farkon lambar karfe suna nuna abun ciki na carbon na karfe, tare da matsakaicin adadin carbon na 'yan dubu, kamar 40Cr, 30CrMo gami da bututun ƙarfe.

② Babban abubuwan haɗakarwa a cikin ƙarfe, ban da wasu abubuwan microalloying, gabaɗaya ana bayyana su da kashi da yawa.Lokacin da matsakaicin abun ciki na gami bai wuce 1.5% ba, kawai alamar kashi gabaɗaya ana yiwa alama a cikin lambar ƙarfe, amma ba abun ciki ba.Duk da haka, a cikin lokuta na musamman, yana da sauƙi don rikicewa, lambar "1" za a iya yiwa alama bayan alamar kashi, kamar lambar karfe "12CrMoV" da "12Cr1MoV", abun ciki na chromium na tsohon shine 0.4-0.6%, kuma na karshen shine 0.9-1.2%.Komai daya ne.Lokacin da matsakaita abun ciki na alloying ≥1.5%, ≥2.5%, ≥3.5%……“, alamar kashi ya kamata a yiwa alama bayan abun ciki, ana iya bayyana shi azaman 2, 3, 4…… da sauransu. Misali, 18Cr2Ni4WA.

③ Alloy abubuwa kamar vanadium V, titanium Ti, aluminum AL, boron B da rare earth RE a cikin karfe suna cikin microalloying abubuwa.Kodayake abun ciki yana da ƙasa sosai, yakamata a yi musu alama akan lambar ƙarfe.Misali, a cikin karfe 20MnVB.Vanadium shine 0.07-0.12% kuma boron shine 0.001-0.005%.

④ "A" ya kamata a ƙara a ƙarshen lambar ƙarfe na ƙarfe mai daraja don bambanta shi daga babban ingancin karfe.

⑤ Manufa ta musamman gami da tsarin ƙarfe, ƙirar lambar karfe (ko kari) tana wakiltar manufar alamar karfe.Misali, karfe 30CrMnSi da aka yi amfani da shi musamman don rive skru ana bayyana shi azaman ML30CrMnSi.

Fasahar kere kere:

1. Hot mirgina (extrusion sumul karfe bututu): zagaye tube blank → dumama → perforating → uku-high diagonal rolling, ci gaba da mirgina ko extrusion → tsiri → girman (ko rage) → sanyaya → mikewa → hydrostatic gwajin (ko dubawa) → marking → ajiya

2. Sanyi-jawo (birgima) bututun ƙarfe maras sumul: zagaye bututu blank → dumama → perforation → take → annealing → pickling → oiling (copper plating) → Multi-pass sanyi zane (sanyi mirgina) → blank tube → zafi magani → mikewa → gwajin hydrostatic (bincike) → alama → ajiya