Lokacin da injiniyoyi suka bayyana 420 bakin karfe don manyan kayan sawa, abubuwan da ba su jure lalata-kamar jikin bawul ɗin ruwa, raƙuman famfo, ko rollers cibiyar winch — suna buƙatar fiye da yarda da kayan kawai. Suna bukatar a 420 bakin karfe factory wanda ya fahimci yadda maganin zafi ke shafar taurin, yadda sigogin injina ke tasiri ga mutuncin saman, da kuma dalilin da yasa kwanciyar hankali a ƙarƙashin hawan keke ke da mahimmanci fiye da ƙarfin juzu'i kaɗai.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ya yi inji, zafi-mayya, da kuma duba a kan 12,000 al'ada 420 bakin karfe sassa tun 2018-mafi yawa ga Arewacin Amirka famfo famfo OEMs da Turai na'ura mai aiki da karfin ruwa tsarin integrators. Mun ga yadda rashin daidaituwa ya haifar da ƙananan ƙwayar cuta yayin niƙa na ƙarshe. Mun gyara kiran GD&T wanda ke ɗaukar raguwar isotropic-amma 420 SS ba sa yin hakan bayan an kashe. Kuma mun sake yin zane-zane inda aka kayyade "karewa madubi" ba tare da ma'anar iyakokin Ra ba - kawai don nemo ɓangaren da ya gaza gwajin fesa gishiri a cikin sa'o'i 96 saboda yawan damuwa na ƙasa.
Shi ya sa dogara ke farawa tun kafin guntu na farko ya tashi. Tsarinmu yana farawa tare da ƙwararrun ƙwararrun bakin karfe 420 - wanda za'a iya ganowa zuwa rahoton gwajin niƙa gamuwa da ASTM A276 da AMS 5630. Mun tabbatar da abun ciki na carbon (0.15-0.20%), chromium (12.0-14.0%), da tauri a cikin yanayin da aka cire (≤200 HB) kafin yanke. Babu wani tsari da zai shiga samarwa ba tare da cikakken ingancin sinadarai ba da ingancin macro-etch. Me yasa? Saboda karkacewar 0.03% na carbon yana canza yanayin farawa na martensite ta 18 ° C - kuma hakan yana canza komai a cikin taurin.
Kayan aikin mu mai yarda da ISO yana ɗaukar cikakken aikin aiki: madaidaicin juyawa na CNC da niƙa (ciki har da madaidaicin axis don hadaddun tashoshin bawul), injin ko taurin yanayi mai sarrafawa (zuwa 52-56 HRC), kwanciyar hankali na cryogenic, da lafiya-grit goge ko electropolishing don mahimman abubuwan rufewa. Muna haɗa maganin zafi kai tsaye a cikin shirin NC-babu dillalai na waje, babu handoffs, babu gibin ganowa. Lokacin da abokin ciniki yana buƙatar 54 ± 1 HRC akan kafada sandar piston 32-mm, muna auna taurin a wurare uku na radial * da * zurfin bayanin shi - ba kawai a saman ba. Wannan ba za a iya sasantawa ba don sassan da ke gudana a 3,000 psi tare da buƙatun rayuwa na gajiyar zagaye na 150,000.
- Babu hannun jari: Kowane oda 420 na bakin karfe ana sarrafa shi daga ƙwaƙƙwaran ɗanyen abu - ba tarkace ba ko kuma shigo da ba a tabbatar ba.
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- Babu makaho gamawa: Ƙwararren ƙasa (Ra, Rz, Rpk) ingantacce ta ASME B46.1-kafin da bayan wucewa-don tabbatar da juriya na lalata aiki
- Babu gazawar maki guda: Cikakkun abubuwan ganowa-daga lambar zafi zuwa ID na ma'aikaci zuwa tambarin lokacin dubawa-wanda aka saka a cikin ERP ɗin mu
Wasu na iya jayayya cewa jefa bakin karfe 420 ba shi da amfani saboda hadarin fashewa mai zafi. Mun yarda-idan kuna amfani da simintin yashi tare da daidaitaccen ƙofa. Amma mu zuba jari-simintin 420 SS gidaje don submersible famfo tushe gudu a flawlessly a cikin ruwan teku sabis saboda muna sarrafa solidification shugabanci, amfani da yumbu harsashi molds tare da low-silic binders, da kuma amfani preheat gradients wanda rage thermal girgiza da 40%. Ba sihiri ba ne. Yana da horo na ƙarfe wanda aka goyi bayan shekaru 11 na ƙwarewar cobalt-alloy-inda sarrafa zafin jiki ke yin-ko-karya.
Mun kuma san abin da bakin karfe 420 * baya yin kyau - kuma za mu gaya muku gaba. Ba zai yi daidai da 316 SS a cikin juriya na chloride ba. Ba shi da kyau don ci gaba da nunawa sama da 600°F. Kuma idan ƙirar ku ta yi kira ga zaren bango mai zurfi, bakin ciki a kan wani yanki mai tauri, za mu ba da shawarar dabarun niƙa zaren bayan zafi maimakon bin famfunan da suka karye a 48 HRC. Gaskiya ba manufa ba ce a nan. Yana da tsaftar injiniya.
Ga abokan cinikin da ke ba da umarni na farko, nazarin aikin injiniyanmu ya haɗa da ra'ayoyin masana'antu kyauta: gano masu tashin hankali a cikin sauye-sauyen fillet, tabbatar da ƙarfi don sassan giciye> 25 mm, da wuraren tuta inda electropolishing na iya ɗaga oxides saman maimakon cire su. Mun hana sake fasalin kayan aiki 23 a cikin watanni 18 da suka gabata-ba ta hanyar faɗin "eh," amma ta nuna daidai inda haɗarin ke rayuwa.
Idan kuna neman 420 bakin karfe factory abokan haɗin gwiwar masana'antu masu mahimmancin manufa, duba bayan takaddun shaida. Tambayi yadda suke tabbatar da bayanan zurfin taurin. Tambayi samfurin mikrographs na sassan giciye. Tambayi yadda suke tafiyar da bambance-bambancen yawa-zuwa-yawa a hazo na chromium carbide. Sannan kwatanta amsoshi.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana ginawa don tsawon rai-ba kawai kwanakin bayarwa ba. Mayar da hankalinmu na gaba: faɗaɗa damar AMS 5630-mai yarda 420 SS don gidaje masu sarrafa sararin samaniya da haɓaka ayyukan aikin simintin simintin gyare-gyare waɗanda ke yanke lokacin jagora da kashi 35% ba tare da sadaukar da tsarin sarrafa hatsi ba. Kayan bai canza ba. Amma yadda muke ɗaukar halayensa da mahimmanci - shine abin da ya bambanta mai kaya.
