Kuponyedwa kwa zipolopolo kumapereka kulondola, kubwereza, ndi kutsirizika kwapamwamba kosayerekezeka ndi kuponyedwa kwa mchenga wamba-makamaka zovuta zapakatikati, zamphamvu kwambiri monga ma hydraulic valve matupi amadzimadzi, nyumba zapampu, ndi ma shafts a winchi. Tapanga zopitilira 12,000 zachitsulo ndi zitsulo mzaka zitatu zapitazi zokha—zambiri zosachepera ± 0.15 mm dimensional tolerance ndi Ra 3.2 µm as-cast surface. Izi sizongoyerekeza. Ndizomwe zimachitika mukaphatikiza chemistry ya phenolic resin, kutentha kwapakati pabokosi, ndi kuyang'anira makulidwe a zipolopolo zenizeni pansi pa sitolo.
Khwerero 1: Kukonzekera Kwachitsanzo - Kulondola Kumayamba Ndi Mbuye
Timagwiritsa ntchito zitsulo zolimba kapena zitsulo za aluminiyamu-osati zamatabwa kapena zosungunuka pang'ono-popanga zipolopolo. Chifukwa chiyani? Chifukwa moyo wamachitidwe umawongolera mwachindunji mtengo pagawo lililonse pama voliyumu opitilira mayunitsi 500. Mawonekedwe athu amaphatikiza ma angles olondola (0.5 ° -1.5 °), ma grooves osachepera 0.8 mm, ndi mawonekedwe ophatikizika omwe amachotsa kudula kwa othamanga. Mtundu uliwonse umatsimikiziridwa ndi CMM motsutsana ndi kasitomala GD&T musanagwiritse ntchito koyamba. Makasitomala ena amatitumizira zithunzi zosindikizidwa za 3D kuti tiyesetse ntchito—koma sitiwataya. Kusakanizika kwa kutentha kwapakati pakati pa utomoni wosindikizidwa ndi chitsulo chosungunula kumapangitsa kuti chipolopolocho chisadziwike bwino.
Khwerero 2: Kupanga Zipolopolo - Kutentha, Utomoni, ndi Nthawi Zosakambirana
Njirayi imatenthedwa mpaka 220-250 ° C. Kuzizira kwambiri? Kuchiritsa kwa utomoni wosakwanira. Kutentha kwambiri? Kuwonongeka msanga ndi kuwonongeka kwa gasi. Timachipaka ndi mchenga wabwino wa silika (40-100 mesh) wosakaniza ndi 2.5-5% thermosetting phenolic resin. Chophimbacho chimazungulira mkati mwa bokosi lotayira kwa masekondi 10-20-utali wokwanira kuti chipolopolo cha 6-12 mm chipangidwe. Kenako imalowetsedwa ndikuphika pa 380-420 ° C kwa mphindi 2-4. Kuphika komaliza kumeneku kumagwirizanitsa utomoni kwathunthu. Lumphani, ndipo chipolopolocho chimaphwanyidwa panthawi ya nkhungu. Timawunika kutentha kwa uvuni masekondi 90 aliwonse pogwiritsa ntchito ma thermocouples owerengeka, osati mawerengedwe ozungulira.
Khwerero 3: Msonkhano wa Mold - Kuyanjanitsa Kumapangitsa Kukhazikika Kwamagawo
Zipolopolo ziwiri za theka zimamatidwa ndi zomatira za phenolic zomwe zimayatsidwa ndi kutentha kapena kumangiriridwa mwamakina. Palibe dongo, palibe misomali, palibe tepi. Kuyika molakwika ngakhale mamilimita 0.3 kumawoneka ngati kung'anima pamalo omwe ali ndi mphamvu-monga ma flanges a nyumba kapena ma valve. Pazigawo za asymmetrical, timagwiritsa ntchito zikhomo za dowel zokhala ndi kulolerana kwa ± 0.01 mm. Musanathire, nkhungu iliyonse yosonkhanitsidwa imadutsa pamalo opangira kuwala. Ngati kusiyana pakati pa theka kupitilira 0.1 mm nthawi iliyonse, kumachotsedwa - osasinthidwanso. Reassembly imabweretsa zolakwika zambiri.
Khwerero 4: Kuthira ndi Kulimbitsa - Kuyenda Koyendetsedwa Kumateteza Chisokonezo
- Kutentha kwa madzi kumasungidwa mkati mwa ± 15°C wa mulingo woyenera kwambiri—mwachitsanzo, 1,420–1,450°C kwa ASTM A126 Kalasi B imvi chitsulo
- Chitsulo chimalowa kudzera pachipata chapansi kuti chichepetse kutsekeka kwa oxide
- Kugwedeza kumachitika mphindi 15-25 pambuyo pothira-nthawi yokhazikika pagawo lililonse, osati nthawi ya wotchi
- Palibe kuziziritsa kokakamiza. Kuzimitsa mwachangu kumang'amba zipolopolo ndikupangitsa kupsinjika kotsalira m'nyumba zokhala ndi mipanda yopyapyala
Nthawi ina tidathira nyumba 48 zofananira zapampu ya pistoni pakutentha kumodzi. Zisanu ndi chimodzi zidawonetsa kutsika pang'ono padoko la valve. Choyambitsa? Kutsika kwa 7 ° C mu kutentha kwa ladle panthawi yothira 12 yomaliza. Tsopano timalowetsa kutentha kwa nkhungu iliyonse-ndikukana batchi iliyonse yomwe kusiyana kumaposa ±10°C.
Khwerero 5: Kuwongolera Pambuyo Poyimba - Kumene Kukhulupirika Kwapamwamba Kumapindula Kapena Kutayika
Kumangirira kwa zipolopolo kumapereka mawonekedwe apafupi - koma osati mawonekedwe a ukonde. Malo osindikizira ovuta amafunikirabe makina a CNC. Ndicho chifukwa chake timagwirizanitsa kuponyera ndi makina pansi pa denga limodzi. Zopangira zathu zachitsulo zimapita molunjika kuchokera ku shakeout kupita ku malo opingasa makina—palibe zosungirako zapakatikati. Chifukwa chiyani? Kuyamwa kwa chinyontho pamalo opangira ma porous kumayambitsa ma pinholes a haidrojeni panthawi ya chithandizo cha kutentha. Timapewanso kuwomberedwa pazigawo zomwe zikuyenera kugwiritsidwa ntchito ndi AMS 5387; zofalitsa za angular zimawononga kapangidwe kambewu kakang'ono kofunikira kuti musatope muzinthu zapampu za cobalt-alloy.
Kuyika kwa zipolopolo kumapambana pomwe kuponya mchenga kumasokonekera komanso kuwononga ndalama - nthawi zambiri magawo olemera 0.5 kg mpaka 50 kg, voliyumu yapachaka kuchokera ku mayunitsi 1,000 mpaka 50,000, ndi zida kuphatikiza chitsulo cha ductile, chitsulo cha kaboni, zitsulo zosapanga dzimbiri, ndi alloys okana nickel. Ku QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., timapanga zipolopolo osati ngati njira yodziyimira yokha koma ngati mfundo imodzi muzitsulo zotsimikiziridwa zopangira makina omaliza. Chigawo chilichonse chopangidwa ndi zipolopolo chomwe timatumiza chimanyamula zinthu zonse, miyeso yotsimikizika ya CMM, komanso mbiri yakale yamafuta - kuchokera pamoto wophika mpaka kumapeto kwa kupsinjika. Umu ndi momwe ma valve opanikizika amapulumuka mizungu 20,000 ya PSI. Umu ndi momwe ma roller a winch center shaft amakhalira othamanga pansi pa 0.02 mm pambuyo pa maola 10,000. Kulondola sikutheka mu sitepe imodzi. Zatsekeredwa mkati—pang’onopang’ono.
