Pamene mainjiniya afotokoza 17-4 PH kuponya ndalama kwa ma valve othamanga kwambiri, nyumba zopopera, kapena mawotchi, iwo samangosankha chinthu - akusankha envulopu yogwira ntchito. Emvulopuyo imafuna kuwongolera kolimba, mawonekedwe osasinthika a martensitic, ndi zero kusokoneza pakukana dzimbiri pambuyo pochiritsa kutentha. Ndi ochepa omwe amapereka izi modalirika. Ambiri amalephera pa mfundo imodzi yofunika kwambiri: kusintha kuchokera ku sera kupita ku gawo lomaliza la geometry pansi pa 1050 ° C kusinthika kwa dziko.
Chifukwa chiyani 17-4 PH Investment Casting Imafuna Zambiri Kuposa Kungopeza
Taponya magawo opitilira 2,300 apadera a 17-4 PH kuyambira 2019 - mavavu a North Sea subsea manifolds, ma silinda a mapampu a hydraulic ovotera 420 bar, ndi ma shaft roller apakati a winchi yamagalimoto amigodi. Zomwe tidaphunzira mwachangu: kupambana kumatengera zinthu zitatu zomwe sizingakambirane - osati ziwiri, osati zinayi.
Choyamba, kufufuza kwazinthu zopangira kuyenera kupitilira ziphaso za mphero. Timayesa kutentha kulikonse kwa delta ferrite tisanathire. Chifukwa chiyani? Chifukwa> 0.8% delta ferrite mu as-cast state imayambitsa kusagwirizana kwa ukalamba panthawi ya chithandizo cha H900-ndipo izi zimapha moyo wa kutopa mu zigawo zozungulira.
Chachiwiri, mawonekedwe a chipolopolo cha nkhungu ayenera kugwirizana ndi njira yowonjezera yowonjezera ya alloy. Kugwira kwapakati pa 1100 ° C kumagwira ntchito 316-koma 17-4 PH kumafuna kupondaponda (120 ° C/h mpaka 950 ° C, kenako 60 ° C/h mpaka 1050 ° C) kupewa microcracking mu 2mm yoyamba ya malo oponya. Tidawona izi pamene chojambula "chofanana" chamakasitomala chidalephera kuyezetsa kupopera mchere pambuyo popanga makina: choyambitsa chinali kuwotcha kwa zipolopolo, osati kutentha.
Chachitatu, mpumulo wopsinjika pambuyo poponya siwosankha-ndikofunikira * pamaso * makina aliwonse. Kupanikizika kosalekeza kotsalira mu 17-4 PH kumasokoneza panthawi ya CNC, makamaka m'nyumba zoonda kwambiri zokhala ndi GD&T callouts zolimba kuposa ± 0.025 mm. Timagwiritsa ntchito kuzungulira kwa mpweya wabwino kwa 620 ° C/2hr titangotha kugwedeza. Kudumpha kumawonjezera 12-18% zotsalira pakuwunika komaliza.
Zomwe Zimakhazikitsa Factory Yowona ya 17-4 PH Investment Casting Payokha
Otsatsa ena amadzitcha "akatswiri" chifukwa ali ndi zipolopolo za ceramic. Kukhazikika kwenikweni kumawonekera pomwe ena amadula ngodya:
- Pre-kutsanulira zitsulo ndemanga: Timayang'ana magawo okalamba omwe amatchulidwa ndi makasitomala a H900 motsutsana ndi zenizeni zenizeni za kutentha kwathu komaliza - osati ma curve ongoyerekeza.
- Kutsimikizira kwa CMM munjira zitatu: Pambuyo pakukonza movutikira (kuti mugwire kupotoza), mukamaliza kukonza (potsatira GD&T), komanso pambuyo pomaliza (kutsimikizira kukhulupirika kwapamtunda).
- Palibe "standard" kutentha kutentha: Chigawo chilichonse chimapeza nthawi yonyowa potengera gawo lake lokhuthala kwambiri, lowerengedwa pogwiritsa ntchito data ya Jominy hardability, osati ma chart amtundu uliwonse.
Chilangochi chimakhala chofunikira kwambiri pazigawo zogwira ntchito monga nyumba za silinda pampu ya piston. OEM imodzi yaku Europe idanenanso 40% moyo wautali wautumiki pambuyo posintha kuchokera pa mpikisano wa 17-4 PH kupita kwathu - osati chifukwa cha kuuma kwakukulu, koma chifukwa chotsalira chathu chotsalira chachepetsa kuyambitsa kwang'ono pang'ono pansi pa kukweza kwa cyclic.
Ubwino Wophatikizana Woyimira Simungathe Kutulutsa
Kuyika ndalama zokha sikutsimikizira kuti ntchitoyo ikugwira ntchito. Cholepheretsa chenicheni ndicho kuphatikizika pakati pa kuponyera ndi makina. Tawonapo nthawi zambiri pomwe ma valavu a 17-4 PH amayenda bwino pakutembenuka chifukwa katswiri wamakina amagwiritsa ntchito zoziziritsa kukhosi zosagwirizana ndi mawonekedwe okalamba - kapena choyipa kwambiri, adalumpha gawo lomaliza la cryogenic stabilization.
Malo athu amasamalira unyolo wonse: kupanga zipolopolo, kuthira kothandizidwa ndi vacuum, kuziziritsa koyendetsedwa, kutsekereza njira, ukalamba wa H900, CNC mphero ndi kutembenuka, electropolishing, ndi kuyesa kutayikira kwa helium-zonse zili pansi pa denga limodzi la ISO 9001:2015. Palibe mankhwala otentha a chipani chachitatu. Palibe masitolo opangira zinthu zakunja. Palibe kusintha kosasinthika kwa zida.
Kuwongolera kumeneko kumapereka zotsatira zobwerezabwereza. Kwa AMS 5387 cobalt alloy nozzles, timapeza ± 0.015 mm makulidwe a khoma la 120 mm kutalika. Pazigawo zapampopi zochokera ku T800, timasunga Ra ≤ 0.4 µm pamwamba pamtunda pamayendedwe amkati-ofunikira kuti cavitation resistance.
Kusankha 17-4 PH Investment Casting Factory: Mafunso Atatu Omwe Amawulula Choonadi
Musanasaine NDA, funsani izi—osati motsatizana, koma mobwerezabwereza:
- "Ndiwonetseni mitengo yanu yomaliza ya 17-4 PH ya kutentha kwa zigawo zokhuthala kuposa mamilimita 50. Onetsani mitengo yokwera, nthawi yogwira, ndi sing'anga yozizira yomwe imagwiritsidwa ntchito."
- "Kodi mulingo wanu wovomerezeka wa intergranular corrosion ndi uti (pa ASTM A262 Practice E) wa H900 wothandizidwa ndi 17-4 PH - ndipo mumatsimikizira bwanji pa batch iliyonse?"
- "Ngati kujambula kwanga kumafuna kukakamiza kwa ASME B16.34 Class 900, ndi njira yotani yomwe mwalemba yotsimikizira kuphulika kwa nkhani yoyamba?"
Ngati mayankho akukhudza "timatsatira miyezo yamakampani" kapena "wothandizira athu amathandizira," chokanipo. Ngati amakoka deta yeniyeni ya ng'anjo, sonyezani ma photomicrographs a malire a tirigu, ndikuwonetseratu zolemba zawo zamkati za hydrotest - pitirizani kulankhula.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. imagwiritsa ntchito mzere wodzipatulira wa 17-4 PH ku Qingdao, wokongoletsedwa ndi magawo omwe amafunikira kusamalidwa bwino komanso geometry yolondola. Mayendedwe awo satengera kuponyedwa kulikonse ngati mawonekedwe achitsulo-koma ngati dongosolo lodzaza lomwe likudikirira kuchita. Malingaliro amenewo amalekanitsa fakitale ndi mnzake. Ntchito yanu ikafika pa bar 420, imazungulira pa 3,000 RPM, kapena kukhala pansi pamadzi kwa zaka 25, kusiyana sikuli papepala. Zili m'nyengo yoyamba ya kutentha, cheke chachinayi cha CMM, ndi kuyesa komaliza kwa helium-nthawi iliyonse.
