Samar da masana'anta N04400 ba shine don nemo mafi ƙasƙanci ba - game da tabbatar da amincin kayan aiki ne kafin a fara mashin ɗin. Mun ga gidajen famfo da yawa suna fashe yayin gwajin ruwa saboda takardar shedar niƙa ba ta yi daidai da ainihin juriyar lalatawar intergranular ba. A wurin aikinmu na Qingdao, kowane billet na N04400-ko na AMS 5387-compliant cobalt-nickel valve kujerun ko T800-alloy winch shafts-yana jure wa dual tabbaci: spectrometric analysis * da* ASTM B164 tensile gwajin a kan zafi daya. Wannan shine yadda muke hana yanayin "tabbataccen amma daidaitacce" yanayin da ke ɓata lokutan lokutan OEM.
Me yasa "ma'aikatar N04400" tana nufin fiye da simintin gyare-gyare ko mirgina kawai
Ayyukan N04400 na gaskiya yana rataye akan abubuwan da ba za'a iya sasantawa guda uku ba: ƙarfafa ƙarfi mai sarrafawa, ƙarancin rarrabuwa, da tarihin zafi mai iya ganowa. Yawancin masu samar da kayayyaki suna lakafta kayan a matsayin "N04400" bayan an bincika ainihin abun da ke ciki-amma sun tsallake ingantacciyar tsarin ƙaƙƙarfan tsari. A aikace, wannan yana haifar da rashin daidaituwa na machinability: wani tsari yana yanke tsabta a 85 m / min; masu magana na gaba a 45 m / min, tilasta canza kayan aiki a tsakiyar gudu. Ma'aikatar mu ta N04400 tana haɗa injin induction narkewa tare da sarrafa ƙarfi na kwatance. An tsara kowane ingot don tazarar dendritic da rarraba stringer sulfur - bayanan da muke rabawa tare da abokan ciniki kafin yanke. Domin matsa lamba bawuloli bukata <0.5 μm Ra surface gamawa, wannan yana kawar da sake yin aikin da ba a shirya ba. Don gidaje na silinda famfo piston da ke aiki a 4,000 psi, yana hana ƙaddamarwar microcrack a ƙarƙashin hawan keke.
Inda daidaitattun bayanan N04400 suka gaza - da kuma yadda muke rufe gibin
ASTM B164 yana bayyana iyakokin sinadarai na N04400 - amma bai ce komai ba game da iyakokin hatsin carbide hazo motsi. Wasu masana'antun suna isar da kayan cikin ƙayyadaddun ƙayyadaddun bayanai duk da haka sun gaza ƙaddamar da gwaje-gwajen rami a cikin ruwa mai wadataccen sinadarin chloride. Muna magance wannan ta hanyar riƙe duk kayan N04400 a 650 ° C na tsawon awanni 2 bayan annail, sannan sanyaya iska. Wannan yana daidaita matrix Ni-Cu akan zaɓin leaching yayin kiyaye ductility. Abokan ciniki suna ba da rahoton tsawon rayuwar sabis na 3.2 × a cikin majalissar famfo ta teku ta amfani da wannan magani. Mahimmanci, ba ma mu'amala da duk batches iri ɗaya: abun ciki na sulfur> 0.005% yana haifar da tsawaita lokacin riƙewa; ragowar titanium>0.02% canjin yanayin sanyi. Saɓani na duniya na ainihi yana buƙatar amsawar ƙarfe na gaske-ba takaddun tsari ba.
Daga danyen mashaya zuwa sashi mai mahimmanci: fa'idar a tsaye
Yawancin masu siyar da N04400 suna tsayawa akan kayan aiki. Mun fara a can — kuma mu mallaki kowane mataki bayan. Lokacin da OEM na Turai ke buƙatar 120 na al'ada mai siffa cobalt alloy nozzles don allurar slurry mai zafin jiki, sun aiko mana da zane tare da ± 0.01 mm GD&T callouts da ƙarshen mako 10. Ga abin da ya faru: masana masana'antar mu sun tabbatar da bayanin yanayin zafi mai zafi na N04400 billet; Ƙungiyarmu ta CNC ta kwaikwayi rarraba kayan aikin guntu a cikin hadadden kwandon shara na ciki; Rukunin mu na ƙarshe sun ingantattun sigogin lantarki a kan buƙatun wucewar ASTM A967. Babu handoffs. Babu jinkiri na ɓangare na uku. Kowane wurin dubawa-daga kayan da ke shigowa CMM na sikanin sikanin zuwa rahotannin gwaji na ƙarshe-yana rayuwa cikin zaren dijital ɗaya. Wannan shine dalilin da ya sa kashi 73% na odar mu N04400 ake maimaitawa don kayan aikin guda ɗaya.
Zaɓi abokin aikin masana'anta na N04400: tambayoyi uku waɗanda ke nuna iyawa
- Shin za ku iya nuna mani cikakkun rahotannin gwajin zafi guda uku na ƙarshe-ciki har da lalatawar intergranular (Tsarin ASTM G28 A) da gwajin jinkirin ƙima a cikin 3.5% NaCl? Idan sun yi shakka, QA ɗin su yana tsayawa a sinadarai.
- Shin kuna injin N04400 a cikin gida-ko kuna fitar da kayan bayan bayarwa? Mashin ɗin waje yana karya ci gaba da tarihin zafi kuma yana haifar da gurɓataccen ƙasa.
- Menene shirin samar da N04400 mafi dadewa - kuma wane yanayin gazawar kuka kawar ta hanyar maimaita tsari? Amsoshi suna bayyana ko sun koya daga bayanan filin ko kawai takaddun shaida na jigilar kaya.
Mun gudanar da wannan shirin N04400 na famfo na tsawon shekaru takwas. Batches na farko sun nuna ƙaramin rami a cikin musaya masu ɗaukar nauyi. Tushen dalili? Ƙananan hadaddun oxide na manganese suna aiki azaman abubuwan damuwa. Magani: ƙara alli magani zuwa narke da gabatar ultrasonic nutsewa tsaftacewa pre-machining. Wannan ba kawai masana'antu ba - wannan shine aikin kula da ƙarfe. Lokacin da kuke buƙatar abin dogara nickel Alloy 400 samarwa, fara inda labarin kayan ya fara - ba inda daftari yayi ba.
