Alloy 400 sassa suna isar da juriya mara misaltuwa a cikin sinadarai masu haɗari, marine, da manyan masana'antar chloride-musamman inda bakin karfe ya gaza. A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Mun machined a kan 12,000 Alloy 400 aka gyara tun 2018 ga na'ura mai aiki da karfin ruwa bawul jikin, teku famfo gidaje, da m-gas compressor internals. Kowane bangare yana farawa da ASTM B164-certified billet, yana jurewa damuwa-taimakon juyayi kafin CNC ya juya, kuma ya ƙare da Ra ≤0.8 μm amincin saman-babu keɓe.
Me ya sa Alloy 400 Sassan suka Fi Canjin Madadi a Sabis na Duniya na Gaskiya
Abokan ciniki suna tambaya: "Me yasa ba kawai amfani da bakin karfe 316 ko duplex ba?" Amsar ta ta'allaka ne a cikin halayen electrochemical-ba kasida ta tallace-tallace ba. Alloy 400 (Ni-Cu, ~ 67% Ni / 30% Cu) yana tsayayya da rage acid kamar hydrofluoric da sulfuric inda wucewar wucewa ta kasa. Mun ga 316 bawuloli sun lalace ta cikin watanni 9 a cikin layin canja wurin acid phosphoric; maye gurbin Alloy 400 piston sanda yana da shekaru 4.7. Kariyar sa ga ramin ruwan teku da lalata-lalata ba ka'ida ba - an tabbatar da shi a cikin dakin gwaje-gwajen da aka amince da shi na ISO 17025 ta amfani da gwaje-gwajen nutsewa na ASTM G36 da ASTM F1113 jinkirin-nauyi-nauyin kimantawa.
Amma Alloy 400 ba toshe-da-wasa bane. Ƙarƙashin ƙarfin ƙarfin aikin sa yana buƙatar kayan aiki na musamman: abubuwan da ake sakawa na carbide tare da gogen fuskokin rake, zurfin yanke (≤0.3 mm), da kuma sanyaya ambaliya a matsa lamba 65. Abokin ciniki ɗaya yayi ƙoƙarin sarrafa shi akan lathe na gado tare da kayan aikin HSS-wanda ya haifar da ƙimar juzu'i na 42% da alamun zance sun wuce GD&T matsayi na ±0.025 mm. Yanzu mun haɗa da sake dubawar injina kyauta tare da kowane RFQ, yana nuna yuwuwar al'amurra kamar murdiya-bangon bakin ciki ko rashin daidaituwar haɓakar zafi yayin maganin zafi.
Inda Mashin Mashin Daidaitawa Ya Hadu da Lalata-Critical Geometry
Yawancin gazawar suna faruwa ba daga zaɓin abu ba - amma aiwatar da lissafi. Wurin rufewa mara kyau akan jikin Alloy 400 matsa lamba na bawul na iya hanzarta lalata ɓarna da 300%. Wannan shine dalilin da ya sa tsarinmu ya haɗa ilimin metrology a matakai uku: pre-machining CMM tabbaci na raw stock flatness, in-process Tantancewar aunawa na zaren gubar daidaito (mahimmanci ga API 6A ƙofar bawul mai tushe), da karshe surface gama inganci ta hanyar farin-haske interferometry.
Muna samar da sassa akai-akai waɗanda masu samar da kayayyaki suka ƙi: 120-mm-diamita Alloy 400 cylinder liners tare da 0.01 mm bambancin kauri na bango a fadin 450 mm tsayi; ba zagaye famfo gidaje bores bukatar ± 0.008 mm cylindricity; da nozzles da aka ɗora tare da 0.005 mm maida hankali tsakanin mashigin shiga da fitillu. Waɗannan ba juriya ba ne - mun inganta su. Kowane jigilar kaya ya haɗa da cikakkun rahotanni masu girma da za a iya gano su zuwa ma'auni na NIST, da takamaiman takamaiman rahotannin gwajin niƙa waɗanda ke nuna ainihin abun cikin Cu/Ni/Fe/C—ba kawai “daidai da ƙayyadaddun bayanai ba.”
Daga Simintin Ɗaukakawa Zuwa Ƙarshe: Me yasa Haɗin Kai Tsaye Ya Muhimmanci
Wasu dillalai sun fitar da simintin Alloy 400 sannan su nada shi. Ba mu. Me yasa? Saboda rarrabuwar dendritic a cikin simintin simintin Alloy 400 yana haifar da yankuna masu wadatar Cu-masu kusanci ga harin fifiko. Tsarin simintin simintin mu na yashi yana amfani da ƙimar ƙarfi mai ƙarfi da haɓakar simintin simintin gyare-gyare a 1150 ° C na sa'o'i 4 - an tabbatar da shi ta hanyar bincike na microprobe. Wannan yana kawar da bandeji, yana tabbatar da daidaitaccen 67.2± 0.3% Ni rarraba, kuma yana ba da daidaiton tauri (130-160 HBW) a duk faɗin ɓangaren.
Wannan iko yana ƙara zuwa ƙarewa. Electropolishing yana aiki mara kyau akan Alloy 400 saboda ƙananan tsarin sa na lokaci biyu. Madadin haka, muna amfani da haɗin gwiwar citric-nitric passivation na mallakar mallaka wanda ya biyo bayan tsaftacewar ultrasonic a cikin ruwa mai tsafta — an inganta ta ASTM A967 Hanyar D. Abokan ciniki sun ba da rahoton 2.3 × tsawon rayuwar sabis a cikin madaukai masu sanyaya chloride idan aka kwatanta da hanyoyin gogewa na injiniya.
Zaɓan Abokin Hulɗa na Ƙaƙwalwar Alloy 400 Dama-Bayan Takardun Bayanai
Nemo sigina guda uku: Na farko, shaida na bincike na gazawar duniya-ba kawai maganganun yarda ba. Muna kula da bayanan binciken tushen tushen jama'a (wanda ba a san su ba) wanda ke rufe ɓarnawar hydrogen a cikin sabis na H₂S da haɗin galvanic tare da flanges na ƙarfe na carbon. Na biyu, rubuce-rubucen sarrafa tsari: Shin suna ƙayyadadden lokacin jiƙa? Yawan sanyi? Tabbatar da girman hatsi ta ASTM E112? Na uku, amsawa ga kiran GD&T-musamman bayanin martaba, runout, da matsayi mai hade. Idan zanen ku ya ƙayyadad da masu gyara MMC ko fasalin simintin datum, ƙungiyar masu faɗin su dole ne su yi magana da harshen sosai.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana aiki ta wannan hanya saboda sassa masu jure lalata ba kayayyaki ba ne. Su ne masu ba da damar tsarin. Rashin gazawar ɓangaren Alloy 400 guda ɗaya a cikin tsarin kula da teku na iya haifar da $2.4M a cikin farashi mai raguwa. Shi ya sa muke ɗaukar kowane tsari-daga samfuri zuwa samarwa-a matsayin manufa-mahimmanci. Muna jigilar sassan Alloy 400 zuwa Arewacin Amurka, Turai, da Kudu maso Gabashin Asiya tare da cikakkun abubuwan ganowa, takaddun shaida, da tallafin injiniya wanda aka gina a cikin ƙima-ba a ƙara shi azaman ƙarin caji ba.
Don aikace-aikacen da ke buƙatar rashin daidaituwar sifili akan juriya na lalata, amincin girma, da daidaiton ƙarfe-Alloy 400 sassa daga QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. an ƙirƙira su don aiwatarwa, ingantattun su don tabbatar da shi, kuma an kawo su don ci gaba da aiki.
