Xa iinjineli zichaza ukubunjwa kweqokobhe leentsimbi ezichanekileyo, abakhethi nje inkqubo-bakhetha indlela eya kuzinzo, ukuthembeka komphezulu, kunye ne-microstructure ephindaphindwayo kwizinto ezisebenza phantsi koxinzelelo olugqithisileyo, ubushushu, okanye ukunxiba. A iqokobhe ngundo ukugalela umzi-mveliso Kufuneka wenze okungaphezulu kunokugalela isinyithi esinyibilikisiweyo kwiqokobhe lesanti elidityaniswe nentlabathi. Kufuneka ibhuloho i-metallurgical control kunye nokulungela umatshini-ingakumbi xa inxalenye yimpompo ye-cobalt-alloy yezindlu ezilinganiselwe kwi-bar ye-350 okanye i-AMS 5387 i-valve body efuna i-± 0.02 mm GD & T ukuthotyelwa.
Kutheni i-Shell Mold Casting ihambisa apho ezinye iiNkqubo zizamana khona
Ukubumba iqokobhe kuhleli phakathi kokugaywa kwesanti kunye nokuphosa utyalo-mali: ngokukhawuleza kunewax elahlekileyo, ukunyamezelwa okungqongqo kunesanti eluhlaza, kwaye kuyingozi kakhulu kuneqokobhe leceramic kushishino lwemithamo ephakathi. Amandla ayo alele kwigobolondo elincinci, eliqinileyo-ngokuqhelekileyo i-6-10 mm ubukhulu-eyenziwe ngokugquma ipateni yensimbi evuthayo (180-250 ° C) kunye ne-phenolic resin-coated silica sand. Isiphumo? Ukugqitywa komphezulu we-Ra 2.5-6.3 μm, ukunyamezela komgca ukuya kuthi ga ku-±0.3 mm kwiimpawu ezingaphantsi kwe-300 mm, kunye nemfuneko encinci yedrafti (0.5 ° -1.5 °). Kodwa loo manani athetha kancinci ngaphandle koqeqesho lwenkqubo.
Siye sabona abathengi betshintsha ukusuka kwisanti yokuphosa ukuya ekubumbeni iqokobhe kuphela ukuba bajongane ne-warpage kwizindlu ezinkulu ze-cylinder-bade baqonde ukuba unobangela yayingeyiyo ukungunda, kodwa ukulungelelaniswa okungundoqo okungahambelaniyo ngexesha lokuhlanganisa iqokobhe. Kwiziko lethu elise-Qingdao, zonke iiseti zeqokobhe zivavanywa ngolungelelwaniso lwamehlo phambi kokuba kuvalwe. Ibhetshi nganye yesanti egqunywe ngentlaka ivavanyelwa ukuqukuqela, ukomelela, kunye nentsalela yokudinwa. Kwaye yonke into egalelweyo iyaphola phantsi kwe-airflow elawulwayo-enganyanzelwanga ukucima-ukuthintela ukwakheka koxinzelelo olushiyekileyo kumacandelo anealloyi ephezulu.
Udibaniso oluthe nkqo alunakuxoxiswana kwiMishini-Amacandelo abalulekileyo
Ukubumba iqokobhe kukodwa akuqinisekisi ivelufa yoxinzelelo esebenzayo. Okubalulekileyo kukuba kwenzeka ntoni ngaphambi nasemva: ukulandeleka kwezinto, ungqamaniso lonyango lobushushu, kunye nenkcazo yedatum elungele i-CNC. Yiyo loo nto iyinyaniso iqokobhe ngundo ukugalela umzi-mveliso imele ibe ngumnini—okanye ilawule ngokuqinileyo—ityathanga elipheleleyo.
- Ukuphoswa kwangaphambili: I-T800 eqinisekisiweyo ye-cobalt-based alloy ingots, iqinisekiswe nge-PMI kunye ne-OES; ubungakanani beenkozo ezilawulwa ngesinyithi se-ladle kunye nokugalelwa kobushushu obuthululwayo (±5°C ukunyamezela)
- Ngexesha lokuphosa: Umfanekiso oshushu wexesha lokwenyani lendawo yokungunda ukubona iindawo ezishushu zasekuhlaleni ezibangela ukushwabana kancinci kumacandelo anodonga olucekethekileyo.
- I-Post-cast: I-annealing yokunciphisa uxinzelelo kwiziko elilawulwa emoyeni, lilandelwa luhlolo lweCMM ye-3-axis *phambi* komatshini-usebenzisa idatha ye-as-cast ukuqinisekisa ukugqwetha.
Oku kudityaniswa kuphelisa i-handoffs apho i-dimensional drift iqokelelana. Xa umthengi wasithumelela umzobo wezindlu we-piston pump cylinder kunye ne-12 i-bores ebalulekileyo kunye ne-0.015 mm yokunyamezela isikhundla, sibambe ukuphazamiseka phakathi kwesibonelelo sokunciphisa kunye ne-stock machining yokugqibela ngexesha lophononongo lobunjineli-kungekhona emva kokuhlolwa kwenqaku lokuqala.
UbuGcisa bezinto eziphathekayo buchaza iMida yokuSebenza
I-cobalt-nickel alloys efana ne-AMS 5387 ayiziphathanga njengomgangatho we-316 ongenasici. Izinga labo eliphezulu lokuqina komsebenzi, ukuhanjiswa kwe-thermal ephantsi, kunye nezigaba ze-abrasive carbide zifuna iiparamitha zokuphosa ezilungeleleneyo *loo khemistri ikhethekileyo * -hayi imimiselo ye-generic "superalloy". Ezinye ii-Foundries ziphatha zonke i-cobalt alloys ngokufanayo. Asazi.
Ngokwesiqhelo, oku kuthetha ukulungelelanisa ubukhulu beqokobhe nge-±1.5 mm ngokuxhomekeke kwimodyuli yecandelo, ukuguqula isantya sokungena ukunqanda ukhukuliseko lwemilomo ecolekileyo, kunye nokubamba ixesha lokuqina kwimizuzwana engama-90 kwiiplagi ezingaphantsi kwe-40 mm ububanzi. Senze oomatshini abangaphezu kwe-17,000 AMS 5387 imilomo ukususela ngo-2021. Ibhetshi nganye ibandakanya ukulandelwa kobushushu obugcweleyo, iingxelo zovavanyo lwe-tensile nge-ASTM E8, kunye neefoto ze-microstructure ezibonisa ukuhanjiswa kwe-eutectic carbide efanayo-akukho maqela angabodwa kufuphi namangeniso esango.
Elo nqanaba lolawulo lahlula umboneleli othumela iicastings ukusuka kulowo uthumela *izixhobo ezisebenzayo eziqinisekisiweyo*. Ukuba isicelo sakho sibandakanya ukulayishwa kwe-cyclic ngaphezu kwe-200 MPa okanye ukuvezwa kwi-H₂S-ecebileyo yeoli kunye nemijelo yegesi, ukuhambelana kwezinto eziphathekayo akukhethi-kungumgca wokuqala wokuthintela ukungaphumeleli.
Ukukhetha iqabane elilungileyo kuthetha ukubuza imibuzo echanekileyo
A iqokobhe ngundo ukugalela umzi-mveliso kufuneka iphendule ezi-hayi kwiincwadana zentengiso, kodwa kwincoko yobunjineli:
- Ngaba ungandibonisa iingxelo zakho zebhetshi ezintathu zokugqibela ze-AMS 5387-kuquka ubungakanani beenkozo, umthamo we-carbide %, kunye ne-interdendritic spacing?
- Ngaba uyaqinisekisa ijometri ye-cast-cast phambi* komatshini, usebenzisa iidatum zendalo zokuphosa-hayi nje imilinganiselo yokugqibela?
- Bubuphi ubunzima bakho beqhekeza elinye le-cobalt alloys ebunjiweyo-kwaye ulawula njani ukwahluka kobunzima bobushushu kuloluhlu?
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ihlangabezana naloo mibuzo ngeenkqubo ezibhaliweyo, hayi izithembiso. Indawo yayo ehambelana ne-ISO isekela ukubunjwa kwegobolondo yentsimbi, intsimbi, i-stainless, kunye ne-cobalt-nickel alloys ephezulu yokusebenza-kunye ne-CNC machining, unyango lobushushu, kunye nokugqitywa komphezulu phantsi kophahla olulodwa. Isebenzela ii-OEMs zehydraulic, izihlanganisi zezixhobo zaselunxwemeni, kunye nabakhi bempompo abakhethekileyo kulo lonke elaseMntla Melika, iYurophu, kunye ne-Asia-mpuma ye-Asia-kungekhona njengomthengisi, kodwa njengokwandiswa kweqela labo lobunjineli bokwenza.
Ukujonga phambili, ishishini liza kufuna ukudityaniswa okungqingqwa kokusasa kunye neenkqubo zokongeza, uqinisekiso olwandisiweyo lwenqanaba lenyukliya kunye nezicelo ze-API 6A, kunye nokuqinisekiswa kwamawele edijithali kumdlalo wokuqukuqela ontsonkothileyo. Isizukulwana esilandelayo iqokobhe ngundo ukugalela umzi-mveliso ayizukuphinda nje ijiyometri. Iya kuxela kwangaphambili ukusebenza-ukuqala ngeqokobhe.
