Amalungu ensimbi ephosiweyo awamelani nje neendawo ezinzima-zichaza ukuthembeka xa ukungaphumeleli akusiyo inketho. Siye sabona iivalvu zoxinzelelo ziqhekeka phantsi kwebhayisekile eshushu, izindlu zempompo zepiston ziwarp emva kweenyanga ezili-18 kwinkonzo yeoli engaselunxwemeni, kunye ne-winch centre shaft rollers ibamba i-mid-lift kwi-excavators yemigodi. Yonke into engaphumeleliyo ibuyela kunobangela omnye: indlela yokuziphatha kwezinto eziphathekayo engafanelekanga kunye neeprofayili zoxinzelelo lwehlabathi lokwenyani. Yiyo loo nto intsimbi ephosa iinxalenye-ngokukodwa ezo zenzelwe uzinzo lwe-dimensional, ukuhambelana kwe-microstructural, kunye ne-metallurgy esebenzayo-zihlala zingenakuthatyathelwa indawo kwiinkqubo zamanzi, iimoto zobunjineli, kunye neendibano zempompo ezikumgangatho ophezulu.
Kutheni iCast Steel Parts igqwesa ezinye iindlela kwiMission-Critical roles
Intsimbi eyenziweyo inika amandla, kodwa ayinayo ijometri entsonkothileyo yangaphakathi. Iimveliso ezidityanisiweyo zazisa iindawo ezichatshazelwe bubushushu ezibeka esichengeni ubomi bokudinwa. Iibhilithi ezenziwe ngoomatshini zichitha i-60-75% yemathiriyeli ekrwada-kwaye izabalaza nokwahluka kobunzima bodonga oluxhaphakileyo kwimizimba yevalvu okanye kwizindlu zesilinda. Amalungu entsimbi yokuphosa asombulula olu luhlu lwezithintelo. Ukugalelwa kwesanti kuzisa iimilo ezikufutshane nenethi kumacandelo amakhulu, angqindilili afana neziseko zempompo; ukuphoswa kotyalo-mali kuphumeza ±0.05 mm unyamezelo kwimilomo yengxubevange ye-cobalt ebhityileyo. Okubaluleke kakhulu, inkqubo yokuqinisa ivumela ukulungelelaniswa kwesakhiwo senkozo elawulwayo-ibaluleke kakhulu kwi-AMS 5387 cobalt alloy 6 iipompo zepompo apho ukupholisa kwesikhokelo kuthintela ukuqhekeka kwe-intergranular ngexesha lokunyuka koxinzelelo oluphezulu.
Sihlala sivavanya iinxalenye zentsimbi ngokuchasene nemigangatho emithathu yokusebenza: ukuxhathisa ukothuka kwe-thermal ngaphezulu kwe-400 ° C, amazinga okhukuliseko angaphantsi kwe-0.08 mm/ngonyaka kudaka oluludaka, kwaye ubomi bokukhathala obudlula imijikelo ye-10⁷ kwi-85% yoxinzelelo lwesivuno. Kuphela ngokufanelekileyo ukuphathwa ubushushu ASTM A216 WCB okanye ASTM A351 CF8M castings ukuhlangabezana zontathu. Iindlela ezingabizi kakhulu ngexabiso eliphantsi aziphumeleli ngokuqikelelwayo-hayi ekuqaleni, kodwa kuphawu lweenyanga ezili-14, xa i-microcracks inyukliya kwiindawo ze-shrinkage porosity ezingabonakaliyo kuhlolo oluqhelekileyo lwe-UT.
Iindleko ezifihliweyo zoKhetho lweMathiriyeli "elungile ngokwaneleyo".
Abanye abathengi bachaza "intsimbi ephosiweyo" ngaphandle kokuchaza ibakala, unyango lobushushu, okanye iimfuno ze-NDT. Sithumele iiyunithi ezingama-220 ze-T800 cobalt-based based shaft roller kwi-OEM yaseYurophu-kuphela ukufumana isaziso sokukhumbula kwiiveki ezintandathu kamva. Unobangela weengcambu? Umthengisi wabo ubeke endaweni ye-ASTM A487 iBanga CA15 kwi-T800 ngaphandle kwemvume. Zomibini ziyi-martensitic stainless steels-kodwa i-CA15 ine-12% ye-Cr ngokumelene ne-T800 ye-27% Cr + 5% Mo. Ukonakala okuqaliswe kumanqaku omatshini ashiywe sisixhobo esingekho mgangathweni, okhawuleziswa luxinzelelo olushiyekileyo olusuka kuxhulumaniso olungafanelekanga lwasemva kokuweld.
Oku akuyothiyori. Yiyo loo nto sinyanzelisa iindawo zokukhangela ezine ezingaxoxisiyo: Iingxelo zovavanyo lokusila eziqinisekisiweyo zayo yonke indawo yobushushu, uhlalutyo oluthe ngqo lwe-spectrographic kwimivalo engenayo, ukulinganisa ukuqinisa phambi koyilo lokungunda, kwaye icandelo elipheleleyo lemephu yobulukhuni kwiicastings ezigqityiweyo. Akukho ngaphandle-nakwiprototypes. Abathengi abadlulayo la manyathelo bahlawula i-3.2 × ngaphezulu kwiintsilelo zentsimi kunokuqinisekiswa kwezinto eziphambili.
Ulawulo Lokuvelisa Oluqala Phambi Kokugalela
Ukusebenza okwenyani kuqala kwisiseko-kodwa kwandisa ngomatshini, unyango lobushushu, kunye nokugqiba. Sidibanisa ukuphosa isanti kunye ne-axis ye-CNC ye-axis emihlanu ekuhambeni komsebenzi omnye: izindlu ezilahliwe zihamba ngokuthe ngqo ukusuka kwi-shakeout ukuya kwisithando somlilo sokunciphisa uxinzelelo, emva koko ukuya kwizixhobo zokusila ezithe tye ezibambe ± 0.015 mm unyamezelo lwendawo yokuzala. Oku kuphelisa iimpazamo zokulungiswa kwakhona ezibetha ababoneleli ngokusebenzisa abathengisi abahlukeneyo kunye noomatshini. Kumacandelo e-AMS 5387, senza isisombululo se-annealing kwi-1150 ° C silandelwa kukucima ngokukhawuleza-ke ubudala kwi-800 ° C kwiiyure ze-16. Inyathelo ngalinye lilogiwe, liyalandeleka kwi-ID yebhetshi yomlilo kunye netshaneli ye-thermocouple.
Indawo yethu ehambelana ne-ISO iqhuba uhlolo lwe-CMM kwi-100% yeempawu ezibalulekileyo: ukugxilwa kwesihlalo kwiivalvu zoxinzelelo, i-cylindricity ye-cylindricity kwizindlu zempompo zepiston, kunye nokugqiba umphezulu kwiindlela zokudibanisa i-roller (Ra ≤ 0.4 µm). Siyakugatya ukuhanjiswa okubonisa> 0.15% ulwahlulo lwe-carbide kwi-microstructure scans-nokuba baphumelele ukuhlolwa kwe-dimensional. Kuba ingqibelelo ayilinganiswa kwiimicrons zodwa. Ikukufaniswa kokuhanjiswa kwechromium kuyo yonke imida yeenkozo.
Ukukhetha iiNdawo zentsimbi yeCast ezihambisayo-hayi nje ukuvakalisa-ukusebenza
Buza le mibuzo phambi kokuba ugqibezele nawuphi na umboneleli: Ngaba isiqinisekiso sabo semathiriyeli sigubungela ukwakheka kweekhemikhali *kunye* neempawu zoomatshini ngokobushushu? Ngaba benza uvavanyo lwe-ultrasonic kwi-100% yezindlu zoxinzelelo oluphezulu-okanye iisampulu kuphela? Ngaba banokubonelela ngeengxelo ze-microstructure ezibonisa isithuba sengalo ye-dendrite kunye nokulinganisa ukufakwa kwi-ASTM E45? Ukuba impendulo ngu "hayi" kuyo nayiphi na, uthenga uluhlu-kungekhona i-inshurensi.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yakha iindawo zentsimbi eziphosiweyo kwiinjineli ezithathe indawo yevalve enye kathathu. Ugxininiso lwethu luhlala luncinci: iinkqubo zokulawula i-hydraulic, i-oyile kunye nezixhobo zokuhamba kwegesi, amacandelo emoto yobunjineli be-powertrain, kunye neendibano zempompo ezikhethekileyo ezifuna i-cobalt-nickel alloys, izinto ze-T800-grade, okanye ukuchithwa kwentsimbi echanekileyo. Asileqi umthamo. Sisebenza ngobunjineli ukuphinda-phinda-kwiibhetshi zeeyunithi ezingama-500, kwisithuba senkonzo yeminyaka eli-12, kuzo zonke -40°C ukusasazwa kweArctic kunye ne-500°C yokucocwa kweendlela ezininzi zokucoca.
Amalungu entsimbi yokuphosa aphumelele xa i-metallurgy idibana nomsebenzi. Akunjalo xa i-specs ibonakala ilungile ephepheni-kodwa xa inxalenye ibamba uxinzelelo kwi-bar ye-350 ngelixa ijikeleza kwi-1,800 rpm, unyaka nonyaka. Lo ngumgangatho esiwuyilayo, uphose, umatshini, kwaye siqinisekise kuwo-ngamaxesha onke.
