Xa iinjineli zicacisa ukufakwa kwevalvu yensimbi engenasici, ayikuko uku-odola nje iinxalenye-zikhusela ingqibelelo yenkqubo phantsi koxinzelelo, ubushushu kunye nomhlwa. Isiphene esinye sokuphosa kwivalve yolawulo lwehydraulic sinokungena kwixesha lokuphumla, umngcipheko wokhuseleko, okanye ukusilela ebaleni. Yiyo loo nto ukukhangela kwi-a steel stainless valve castings ifektri ngoqeqesho oluqinisekisiweyo lwe-metallurgical-hayi nje umthamo we-Foundry-ayinakuxoxisana.
Ingqibelelo Yezinto Ezibonakalayo Iqala Phambi Kokugalela
Siye sabona iiprojekthi ezininzi zilibazisekile ngenxa yokungahambelani kolwakhiwo lweenkozo kwi-316 okanye i-F22 ye-stainless castings. Kunqabile malunga nekhemistri yodwa. E-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Yonke ibhetshi yentsimbi engenasici iqala ngokulandelelwa kwezinto ezikrwada eziqinisekisiweyo-ukuhla ukuya kwinani lobushushu kunye nengxelo yovavanyo lokusila. Akukho ngaphandle. Ababoneleli bethu bafanelekile kwangaphambili ngophicotho oludibeneyo lwe-metallurgical, hayi amaphepha nje. Siyaqinisekisa umxholo wekhabhoni, amanqanaba e-ferrite, kunye nokuxhathisa umhlwa phakathi kwegranular *phambi kokuba* kuqale ukunyibilika. Kwimizimba yevalve yoxinzelelo oluphezulu efuna i-ASTM A351 CF8M okanye i-A743 CA15, olo qinisekiso luthintela ukunyanzeliswa kwesigaba se-sigma enkonzweni.
Oku akuyothiyori. Omnye umxhasi wezixhobo ze-oyile yaseMntla Melika wathatha indawo yomntu okhuphisana naye emva kokungaphumeleli kwamabala amathathu kwiivalvu zokukhupha impompo. Zontathu zibonise i-micro-porosity kufuphi neendawo zokungena-kunye nokulandeleka kwezinto eziphathekayo. Ukutshintshwa kwethu kokutshintshwa kuphumelele uvavanyo lwe-hydrostatic kwi-1.5 × uxinzelelo olulinganisiweyo, kunye neerekhodi ezigcweleyo ze-radiographic (RT) kunye nedayi ye-penetrant (PT) egcinwe iminyaka eyi-10.
Apho ukuCasa kuhlangana khona noMatshini ochanekileyo
Uninzi lweevalve zensimbi engenasici aziphumeleli kwi-Foundry-kodwa kwi-interface phakathi kokunyamezela ukuphosa kunye nejometri esebenzayo. Ubukhulu bodonga obuyi-±1.5 mm bunokujongeka bamkelekile ephepheni. Kodwa xa umatshini wokugqibela ususa i-3 mm ukubetha indawo ethe tyaba yesihlalo ngaphakathi kwe-0.005 mm, uxinzelelo olushiyekileyo lujija inxalenye. Yiyo loo nto ukudibanisa ngokuthe nkqo kubalulekile.
I-QINGDAO QIANGSENYUAN iqhuba utyalo-mali kunye nokuphosa isanti * ecaleni kwe-multi-axis CNC yomatshini kwindawo enye ehambelana ne-ISO. Sisebenza ngemizimba yevalvu kwangoko emva koxinzelelo lonyango lobushushu-kungekhona emva kweeveki emva kokuthunyelwa kwikontrakta engaphantsi. Oku kulawula ukugqwetheka. Sibamba ii-callouts ze-GD & T njengokunyamezela kwesikhundla se-0.02 mm kwi-pilot bores enxulumene nobuso be-flange-ibaluleke kakhulu kwi-bubble-tight shutoff. Kwaye sigqibezela iindawo zokutywina nge-mirror-polish grinding (Ra ≤ 0.2 µm), kungekhona nje ukujika.
- Ukukhutshwa komzimba weValve: ASTM A351 CF8, CF8M, CF3M; I-ASME B16.34 iyahambelana
- Izihlalo zokuhlala kunye nokufakwa kweplagi: I-Hardened 17-4PH okanye i-alloys ye-cobalt yesiko (AMS 5387)
- Izindlu ezinexabiso loxinzelelo: Ukuya kuthi ga kwiKlasi ye-2500, iqinisekisiwe nge-API 598 nganye
- Ukugqitywa komphezulu: I-electropolished, passivated, okanye custom nitrided ngokwe-ASTM A967
Akukho "Standard" xa iNtsebenzo ingaxoxiswana
Abanye abathengi bacinga ukuba "iintsimbi zevalve castings" zithetha ubungakanani beshelufu. Inyani inzima ngakumbi. Ivalve yokulawula iwintshi yaselwandle idinga i-duplex enganyangekiyo emanzini olwandle (UNS S32205) eneendlela zokuqukuqela ezingoomatshini ezihambelana ngqo nedatha yokulinganisa ulwelo lolwandle. I-nozzle ye-AMS 5387 ye-cobalt ye-alloy yempompo yekhemikhali ephezulu ifuna ukunyamezela kweprofayili ye-0.01 mm kwi-convergent-divergent contours yangaphakathi-akunakwenzeka ngaphandle kokuqinisekiswa kwe-CMM yangaphakathi kwi-CAD.
Asizigcini ii-generic castings. Sakha iiyunithi ezisebenzayo: ii-spools ezilinganisiweyo zoxinzelelo kunye neendawo ezidibeneyo zokudambisa, izindlu ze-cylinder ezinembuyekezo yokwandisa i-thermal eyakhelwe kuyilo lokuphosa, i-piston pump manifolds apho ukulungelelaniswa kwe-port kuchaphazela ukusebenza kwe-volumetric ngu> 3%. Wonke umzobo ujongana nokuphononongwa kwe-manufacturability-kungekhona nje ngeendleko, kodwa ngendlela inxalenye eziphatha ngayo kwi-bar ye-200 kunye ne-120 ° C.
Yiyo loo nto esona sicelo sethu sixhaphakileyo "ingathumeli isicatshulwa se-100 pcs." Yithi "Ngaba unokusiqinisekisa esi sitaki se-GD&T ngaphambi kokuba usebenzise izixhobo?" Senza njalo-sisebenzisa i-ZEISS CONTURA CMM kunye neeprofilometers zamehlo, hayi iicalipers kuphela. Ukuba umzobo womthengi ubiza indawo yokwenyani kwi-6 mm ibhore ngokumalunga nobuso be-flange ye-300 mm, silinganisa imikhosi yokudibanisa kunye ne-thermal drift kuqala. Emva koko sinqumle.
Ukuhanjiswa Ungacwangcisa Around
Ukuthembeka akukhona nje malunga nomgangatho-kumalunga nokuqikelelwa. Ukuphoswa kade kuphazamisa umgca wendibano wonke. Sisebenzisa ucwangciso lwemveliso ebhityileyo kunye nesitayile semathiriyeli ye-kanban, hayi ukucwangciswa kwebhetshi kunye nomgca. Ixesha lokukhokela iPrototype? Iintsuku ezingama-21 ukusuka kumzobo ovunyiweyo. Ukuveliswa kwevolumu ephakathi (i-50-500 iipcs)? Iintsuku ezingama-35-itshixiwe ngokubhaliweyo, kunye nohlaziyo lwenkqubela phambili yeveki kubandakanya neengxelo ze-NDT kunye namaphepha okukhangela amanqanaba.
Sithumela ngenqanawa kwihlabathi jikelele, kodwa siphephe izinto ezothusayo elwandle. Yonke into ethunyelwayo ibandakanya ipakethe esemgangathweni etywiniweyo: iziqinisekiso zezinto ezibonakalayo, iilogi zokuphatha ubushushu, iingxelo zokuhlola, kunye neefoto zeempawu ezibalulekileyo. Akukho maxwebhu ePDF kuphela. Iikopi ezibonakalayo zihamba kunye nomthwalo. Kuba xa indlu yevalve ifika eRotterdam okanye eHouston, injineli eyamkelayo akufuneki ifune i-imeyile emva kobungqina.
Iivalve zentsimbi engenastainless aziyompahla. Zizigqibo ezithwele umthwalo. Ilungelo steel stainless valve castings ifektri ayithululi nje isinyithi-yeyakho i-physics yesicelo sakho. Ukusuka ekukhethweni kwealloyi etyhidiweyo ukuya ekugqityweni komphezulu wokugqibela, ukusuka kuqinisekiso lwe-GD&T ukuya ekulandelekeni kokuthunyelwa, ukuchaneka akunakushiyeka. Yiyo loo nto iinjineli kwiinkqubo zehydraulic, i-oyile kunye negesi, kunye nempompo ekhethekileyo yokwenziwa kwempompo-hayi ngexabiso eliphantsi, kodwa ngokusebenza kwakhona, i-zero engaqondakaliyo, kunye ne-zero guesswork.
