Fakitale yachitsulo chosapanga dzimbiri ya Martensitic - mawuwa amawonetsa zambiri kuposa mphamvu yopangira. Ilozera ku mphambano yachilendo yazitsulo zowongolera zitsulo, makina olondola, ndi kutsimikizira kwachindunji. Ndiochepa omwe amagwiritsa ntchito magiredi a martensitic ngati 410, 420, 440C, kapena ma aloyi osinthidwa 13Cr *mapeto mpaka-kumapeto*: kuchokera kuzinthu zothiridwa ndi kutentha mpaka kuzinthu zomalizidwa ndi GD&T zomwe zimapulumuka 300 MPa hydraulic spikes ndi kuvala konyowa. Tawona ma projekiti ambiri akuyimitsidwa pomwe othandizira amatenga zosapanga dzimbiri ngati "zopanda banga" - kulumpha kutsimikizira kutenthedwa, kusawerenga molakwika ma gradients, kapena kunyalanyaza kukhudzika kwapang'onopang'ono kwa kuzizira.
Chifukwa chiyani Martensitic Stainless Imafunikira Fakitale Yapadera - Osati Malo Ogulitsira Makina Okha
Zitsulo zosapanga dzimbiri za Martensitic zimapeza mphamvu pozimitsa ndi kutentha - osati kuuma kolimba ngati austenitics. Izi zikutanthawuza kuti sitepe iliyonse ikaponyedwa imakhudza ntchito yomaliza: kuzizira kwa nthawi yolimba kumakhazikitsa dongosolo la tirigu; kuzimitsa kuuma kumatsimikizira martensite voliyumu kagawo; kutentha kumawongolera kulimba motsutsana ndi kuuma kwa malonda. Chopangira chamba sichingatsimikizire kukhazikika kwa 52-58 HRC kudutsa pampu ya piston ya 120-mm-diameter popanda mbiri yeniyeni yotentha komanso kuwongolera nthawi yonyowa.
Takumana ndi ma valve okanidwa m'mayesero am'munda chifukwa wogulitsa adagwiritsa ntchito kuzimitsa mpweya m'malo mozimitsa mafuta kwa gulu lothandizira 420 - zomwe zidapangitsa kusintha kosakwanira kwa martensite ndikusweka msanga pansi pa kudzaza kwa cyclic. Winch center shaft ya kasitomala wina idalephera pa 65% ya moyo wapangidwe chifukwa chosaneneka pakuwonongeka kwapamtunda - chilema chosawoneka ndi maso koma chowopsa chifukwa cha kupsinjika. Izi sizowopsa zongoyerekeza. Ndi njira zolephereka zobwerezabwereza zomwe zimamangiriridwa mwachindunji pakuwongolera - osati chiphaso chokha.
A zoona martensitic zitsulo zosapanga dzimbiri fakitale Ayenera kukhala ndi mphamvu zitatu zomwe sizingakambirane: kuphatikizika kwa chithandizo cha kutentha chotsimikizika (osati kutumizidwa kunja), mu-ndondomeko ya metallography ya kutsimikizika kwa microstructure, ndi makina a CNC osinthidwa kukhala magawo olimba a boma - kuphatikiza njira zothandizira zomwe zimachepetsa kugawanikanso kotsalira.
Kuphatikiza Koyima Kumathetsa Zowawa Zenizeni Zapadziko Lonse
Zolephera zambiri zimachitika pazigawo zosiyanitsidwa: kuponyera kutentha, kutentha kwa makina, kukonza mpaka kumaliza. Gawo lililonse likamakhala m'malo osiyana, kugwedezeka kumachulukana. Nyumba ya silinda yokhala ndi + 0.3 mm kulolerana imatha kuchepa -0.15 mm itatha kuzimitsidwa - kenako imapatuka + 0.1 mm pakumangirira pomaliza mphero. Popanda deta yogawana ma metrology ndi ma CMM omwe ali nawo, masinthidwewo amakhala chete.
Pamalo athu a Qingdao, nyumba zokhala ndi ndalama zokwana 13Cr zimasuntha molunjika kuchokera kung'anjo kupita m'chipinda chopangira makina - palibe zoyendera, palibe kukonzanso. Timagwiritsa ntchito njira yolumikizira yomweyi kuchokera pamapangidwe a nkhungu mpaka pakuwunika komaliza. Pazigawo za mpope za AMS 5387 cobalt alloy, timagwiritsa ntchito ma data a GD&T ofanana pazida zonse zoponyera ndi mbale za CNC. Izi zimachotsa cholakwika chowonjezereka - chofunikira kwambiri pamene makulidwe a khoma amasiyana pakati pa 4.2 mm ndi 22.5 mm pa gawo limodzi.
Izi sizokhudza kumasuka. Ndi za kubwerezabwereza. European hydraulic OEM inachepetsa kuvomereza kwake kwa nkhani yoyamba kuyambira masabata a 11 mpaka masabata a 3.5 atasinthira kumayendedwe athu ophatikizika - chifukwa adasiya kukonzanso zojambula za "kusintha kwa makina" pamawonekedwe aliwonse.
Zomwe Makasitomala Amafunikira - Kupitilira Mapepala Azinthu
Ogula samayitanitsa "martensitic zosapanga dzimbiri." Amayitanitsa valavu yokakamiza yomwe imayenera kusindikiza pa 250 ° C ndi 415 bar popanda kuphulika. Kapenanso chingwe chotchinga chomwe chimakana kuponyedwa m’madzi a m’nyanja pamene chikutumiza torque ya 1,850 N·m. Kapena maziko a pampu omwe amasunga kusalala mkati mwa 0.015 mm kupitirira 800 mm pambuyo pa maola 10,000 akugwedezeka.
- Kufufuza kwazinthu mpaka kutentha nambala - osati ma cert mphero, koma mbiri yakale yotentha pagawo lililonse
- Kuuma mapu - osati kuwerenga kumodzi kokha kwa Rockwell, koma 9-point grid data kudutsa madera ovuta
- Thandizo loyesa ntchito - kuphatikiza kutsimikizika kwa hydrostatic burst and salt-spray cycling pa ASTM B117
- Malingaliro aukadaulo a GD&T-aware - kuyitanitsa ma callout omwe amasemphana ndi zomwe zingatheke kuti zitha kutheka
Taphunzira izi movutirapo. M'mbuyomu, kasitomala adatchula Ra 0.4 µm pampando wa 440C - osadziwa kuti kugaya 440C pansi pa Ra 0.6 µm kumayambitsa kung'amba pang'ono pansi pa njinga yamoto. Gulu lathu lidapereka lingaliro lapamwamba lapamwamba lokha pagulu losindikiza - kupulumutsa 37% munthawi yozungulira ndikuwonjezera moyo wautumiki ndi 2.3×. Kuzindikira kotereku kumangowonekera pamene zitsulo, makina, ndi uinjiniya wa ntchito zimakhala patebulo limodzi.
Kuyang'ana M'tsogolo: Kumene Kusamalitsa Kumakumana ndi Ulamuliro Wolosera
Malire otsatirawa samangokhalira kulolerana movutikira. Ndizolosera mosasinthasintha. Tikuyika ma thermocouples mkati mwa zisankho kuti tigwirizane ndi liwiro lolimba ndi tsankho la carbide mu 420 castings. Tikugwirizanitsa ma signature a CNC spindle load ndi subsurface microcrack mapangidwe mu 440C pomaliza kutembenuka. Izi si zisudzo za R&D - ndi momwe timadulira mitengo yamtengo wapatali pazinthu zamtengo wapatali za martensitic kuchokera pa 8.2% mpaka 1.9% pa miyezi 18.
Ngati pulojekiti yanu ikufuna zida zosapanga dzimbiri za martensitic zomwe zimagwira - osati kungoyang'ana - mumafunikira zambiri kuposa wogulitsa. Mufunika mnzanu yemwe amasamalira kutentha kulikonse ngati kuyesa koyendetsedwa, njira iliyonse yodutsa ngati zitsulo, ndi kutumiza kulikonse ngati chochitika chofunikira kwambiri. Ndilo tanthauzo la ntchito ya a martensitic zitsulo zosapanga dzimbiri fakitale yopangidwira ntchito yofunika kwambiri.
