I-Martensitic steel stainless factory - elo binzana libonisa ngaphezu komthamo wemveliso. Ikhomba kwisiphambano esinqabileyo solawulo lwe-metallurgical, ukuchaneka kwe-machining, kunye nokuqinisekiswa kwesicelo esithile. Ababoneleli abambalwa baphatha amabakala e-martensitic afana ne-410, i-420, i-440C, okanye i-alloys ye-13Cr elungisiweyo ye-customl * ekupheleni ukuya-ekupheleni *: ukusuka kwizikhewu zokuphosa eziphathwe ngubushushu ukuya kumacandelo agqityiweyo ahambelana ne-GD&T asinda kwi-300 MPa spikes hydraulic kunye ne-abrasive slurry. Siye sabona iiprojekthi ezininzi zidodobala xa amaqabane okukhangela ephatha i-martensitic ingenabala “njengenye nje engenabala”- ukutsiba ukuqinisekiswa okupholileyo, ukufunda ngendlela engeyiyo ukuqina kobunzima, okanye ukujongela phantsi ubuntununtunu be-microstructural kumazinga okupholisa.
Kutheni iMartensitic Stainless ifuna iFactory ekhethekileyo-hayi nje ivenkile yoomatshini
Iintsimbi ze-Martensitic stainless zifumana amandla ngokucinywa kunye nokuvutha - hayi isisombululo esiqinileyo njenge-austenitics. Oko kuthetha ukuba inyathelo ngalinye emva kokuphosa lichaphazela ukusebenza kokugqibela: izinga lokupholisa ngexesha lokuqiniswa libeka isakhiwo sokuqala sengqolowa; ukucima ubungqongqo bumisela iqhezu lomthamo we-martensite; iqondo lobushushu bulawula ubulukhuni vs. ukurhweba ngobulukhuni. I-generic foundry ayinakuqinisekisa nge-52-58 HRC engaguqukiyo ngapha kwe-120-mm-diameter-diameter piston yezindlu zempompo ngaphandle kweprofayile yexesha lokwenyani kunye nebhetshi ethile yokulinganisa ixesha lokufunxa.
Siye sadibana neevalve ezikhatywayo kwiimvavanyo zentsimi ngenxa yokuba umthengisi wasebenzisa ukucima umoya endaweni yokucima ioli kwi-420-based based relief relief body-okubangelwa ukuguqulwa okungaphelelanga kwe-martensite kunye nokuqhekeka kwangaphambi kwexesha phantsi kokulayisha i-cyclic. Enye i-winch centre shaft yomthengi ayiphumelelanga kwi-65% yobomi bokuyila ngenxa ye-decarburization engaxelwanga kumphezulu womgangatho - isiphene esingabonakaliyo ekuhlolweni okubonakalayo kodwa yintlekele phantsi koxinzelelo lwe-torsional. Ezi ayingomngcipheko wethiyori. Ziindlela zokungaphumeleli eziphindaphindiweyo ezibotshelelwe ngokuthe ngqo kwinkqubo yoluleko- hayi isiqinisekiso sezinto eziphathekayo kuphela.
Yinyani martensitic steel stainless factory kufuneka abe nezakhono ezintathu ezingenakuxoxisana: ukuhlanganiswa konyango lokushisa oluqinisekisiweyo (kungekhona ngaphandle), kwi-process metallography yokuqinisekiswa kwe-microstructure, kunye ne-CNC machining calibrated to hardened-state cutting parameters - kubandakanywa izicwangciso zendlela yesixhobo ezinciphisa ukusabalalisa kwakhona uxinzelelo oluseleyo.
Ukudityaniswa okuthe nkqo kuSombulula iiNdawo zentlungu zeHlabathi
Uninzi lwentsilelo luyenzeka kwiindawo eziphathwayo: ukuphoswa kunyango lobushushu, ukunyangwa kobushushu kumatshini, ukwenziwa komatshini ukugqiba. Xa inqanaba ngalinye lihlala kwindawo eyahlukileyo, i-dimensional drift iyaqokelelana. I-cylinder yendlu ephoswe nge +0.3 mm yokunyamezela inganciphisa -0.15 mm emva kokucima - emva koko ijike + 0.1 mm ngexesha lokubamba ukugqiba ukugaya. Ngaphandle kwedatha ye-metrology ekwabelwana ngayo kunye nee-CMM ezidibeneyo, ezo zitshintshi zidibanisa ngokuthe cwaka.
Kwiziko lethu le-Qingdao, izindlu ze-investment-cast 13Cr zihamba ngokuthe ngqo ukusuka kwiziko ukuya kwisisele somatshini - akukho zithuthi ziphakathi, akukho kulungiswa kwakhona. Sisebenzisa inkqubo yolungelelaniso efanayo ukusuka kuyilo lokungunda ngokuhlolwa kokugqibela. Kwiindawo zempompo ye-cobalt ye-AMS 5387 ye-cobalt, sisebenzisa idatha efanayo ye-GD&T kuzo zombini izixhobo zokugalela iipatheni ze-CNC. Oku kuphelisa impazamo eqokelelweyo - ibaluleke kakhulu xa ubukhulu bodonga buhluka phakathi kwe-4.2 mm kunye ne-22.5 mm kwindawo enye.
Oku akukho malunga nokulula. Imalunga nokuphindaphinda. Enye i-OEM ye-hydraulic yaseYurophu yanciphisa umjikelo wokuvunywa kwenqaku lokuqala ukusuka kwiiveki ze-11 ukuya kwiiveki ze-3.5 emva kokutshintshela ukuhamba kwethu okudityanisiweyo - kuba baye bayeka ukuhlaziya imizobo "yohlengahlengiso lobuchule" kuyo yonke imbonakalo.
Eyona nto ifunwa ngabathengi-Ngaphaya kwamaPhepha oMathiriyeli
Abathengi abaodoli "i-martensitic stainless." Bayalela ivalve yoxinzelelo ekufuneka itywine kwi-250 ° C kunye ne-415 bar ngaphandle kwegalling. Okanye ishafti yewintshi exhathisayo ekungeneni emanzini olwandle ngelixa ihambisa i-1,850 N·m torque. Okanye isiseko sempompo esigcina i-flatness ngaphakathi kwe-0.015 mm ngaphezu kwe-800 mm emva kweeyure ze-10,000 zokungcangcazela.
- Ukulandeleka kwezinto phantsi ukuya kwinani lobushushu - hayi nje iicerts zokugaya, kodwa iilogi ezigcweleyo zembali ye-thermal kwiqashiso nganye
- Ubunzima bemephu - hayi nje ukufundwa kwe-Rockwell enye, kodwa idatha yegridi ye-9-point kuzo zonke iindawo ezibalulekileyo
- Inkxaso yovavanyo olusebenzayo -kubandakanya ukuqinisekiswa kwe-hydrostatic burst kunye ne-salt-spray cycling nge-ASTM B117
- GD&T-aware ingxelo yobunjineli - ukufola iifowuni ezingqubanayo nezigqibo zomphezulu wokuqina ofikelelekayo
Sifunde oku kabuhlungu. Kwangoko, umthengi wachaza i-Ra 0.4 µm kumphezulu wesitulo se-440C - engazi ukuba ukucola okuqinileyo kwe-440C ngaphantsi kwe-Ra 0.6 µm kubangela ukuqhekeka kancinci phantsi kwebhayisekile eshushu. Iqela lethu licebise i-superfinish yendawo kuphela kwibhendi yokutywina - ukonga i-37% ngexesha lomjikelo kunye nokwandisa ubomi benkonzo nge-2.3 ×. Olo hlobo lokuqonda luvela kuphela xa i-metallurgy, machining, kunye nobunjineli besicelo buhlala kwitafile enye.
Ukujonga Phambili: Apho Ukuchaneka Kudibana noLawulo lokuQikelela
Umda olandelayo awukho nje ukunyamezela okungqongqo. Kukuhambelana kwangaphambili. Sifakela i-thermocouples ngaphakathi kokubumba ukubumba ukulungelelanisa isantya sokuqina kunye nokwahlulwa kwe-carbide kwii-420 castings. Sinxibelelanisa iisignesha zomthwalo we-CNC kunye ne-subsurface microcrack kwi-440C ngexesha lokujika kokugqiba. Oku akusiyo i-R&D ithiyetha - yindlela esinqumla ngayo amaxabiso e-scrap kumacandelo exabiso eliphezulu le-martensitic ukusuka kwi-8.2% ukuya kwi-1.9% kwiinyanga ezili-18.
Ukuba iprojekthi yakho ifuna i-martensitic stainless components ezisebenzayo-hayi nje ukuphumelela ukuhlolwa-ufuna ngaphezulu kunomthengisi. Udinga iqabane eliphatha wonke umjikelo wokuphatha ubushushu njengovavanyo olulawulwayo, yonke i-machining pass njengesehlo sesinyithi, kunye nokuhanjiswa ngalunye njengenyathelo elibalulekileyo. Leyo yinkcazo yokusebenza kwe martensitic steel stainless factory yakhelwe umsebenzi obalulekileyo wobuthunywa.
