Iyo abajenjeri bagaragaje ibyuma bitagira umwanda kugirango bigenzurwe nubutumwa bukomeye cyangwa ibintu byuzuzanya cyane, ntabwo bahitamo gusa kurwanya ruswa - baba bahisemo guhagarara neza murwego rwo gusiganwa ku magare, ubusugire bwa microstructural nyuma yo kubitunganya, hamwe nibisubirwamo muburyo bwa mashini. Niyo mpamvu guhitamo iburyo uruganda rutunganya ibyuma ntabwo bijyanye n'ubushobozi cyangwa igiciro cyonyine. Byerekeranye na disipuline ya metallurgjique, inzira ikurikirana, hamwe nuburambe bwagaragaye hamwe nibice binanirwa bikabije niba ubukana burenze 0.8% cyangwa imvura igabanya imipaka ya karbide ihindagurika na 5 ° C mugihe cyo kuvura ubushyuhe.
Kuki ibyuma bitagira umuyonga MIM isaba ibirenze ifu nitanura
Twabonye imishinga myinshi ihagaze - ntabwo iri mu isuzuma ryashushanyije, ahubwo no kugenzura ingingo ya mbere - kubera ko utanga isoko yafataga ibyuma bitagira umwanda MIM nkibigega bisanzwe 316L. Uburyo nyabwo bwo kunanirwa kwisi vuga inkuru: urupapuro rwintambara mumibiri yoroheje yinkuta nyuma yo gucumura; ubukana budahuye hejuru ya mm-12 ya diametre ya piston kubera gukwirakwiza karubone; Ubuso bwibitse mumazu ya pompe nyuma yamasaha 48 yo gupima umunyu-spray kuko gukuraho binder hasigaye ibisigazwa bya sulferi.
Ibyuma bitagira umuyonga MIM ikora gusa mugihe ibintu bitatu bihuye: Icya mbere, ibikoresho fatizo bigomba kuba ifu ya gaze ya pome hamwe na O₂ ≤ 150 ppm hamwe na morphologie spherical> 95% - ntabwo ivangwa n’ibisigazwa by’amazi byagurishijwe nka "MIM-urwego." Icya kabiri, gusiba bigomba gukurikiza ibyiciro byinshi byerekana ubushyuhe bwa kalibari kuri buri kintu, ntabwo ari gahunda ihamye. Icya gatatu, gucumura bisaba umwuka wa hydrogène wuzuye kandi ufite isuku nyinshi hamwe nikime ≤ –60 ° C. Simbuka kimwe, hanyuma ubone ibice bitambutsa cheque ya CMM ariko kuvunika kuri 72% byumuvuduko ukabije.
Niyo mpamvu dufata ibyuma byose bitagira umwanda MIM itumiza nkamasezerano ya metallurgjiya-ntabwo ari umusaruro. Dutangirana na powder yemewe ikurikiranwa kugeza kumashanyarazi yashizwemo, kwemeza binder yatwitse dukoresheje umurongo wa TGA-DSC, kandi tugakurikirana ikirere cyo gucana itanura mugihe nyacyo hamwe na quadrupole mass spectrometry. Nta na kimwe kidasanzwe.
Aho Ubwubatsi Bwuzuye Buhura nukuri kwinganda
Uruganda rwa MIM rwinshi rutagira umwanda rwiza cyane mugihe cyo kureba cyangwa ibikoresho by amenyo - ibice biri munsi ya 50g, guhangayika gake, nta kashe ikora. Ariko inganda zikoreshwa mu nganda zisaba byinshi: ububiko bwumuvuduko ukorera kuri bar 420, amazu ya silinderi hamwe na ± 5 µm yibanze kuri mm 200 z'uburebure, imashini ya shitingi ya shitingi itwara imitwaro ya toni 12. Izi ntabwo ari ibibazo bya geometrie. Nibibazo byimyitwarire yibintu.
Twatanze ibyuma birenga 18,000 by'icyuma MIM ya sisitemu ya hydraulic aho kumeneka byasobanuraga ko sisitemu ihagarikwa-kandi aho icyuma kimwe cyatsinzwe na AMS 5387 cobalt-alloy cyinjije amadolari 240k mugihe cyo gukora. Igisubizo cyacu? Gutunganya Hybrid. Twahinduye ingirabuzimafatizo ya geometrike, hanyuma CNC-mashini ikomeye yo gufunga hejuru ya Ra 0.2 µm hanyuma ukande-gukomeretsa amaboko atagira ingese mumitwaro itwara imitwaro. Ibi ntabwo ari ukunyuranya-ni ugushiraho neza.
Ikigo cyacu cyujuje ISO gikora imirongo ya MIM yihariye ya 17-4PH, 420 idafite ingese, hamwe na duplex yihariye - buri kimwe gifite ifu itandukanye, kubika ibikoresho, hamwe nitanura. Nta kwanduzanya. Nta bisangano bisangiwe. Ubufindo bwose bubona chimie yuzuye ikoresheje OES, gupima ubucucike, hamwe no gupima ubushishozi kuburugero rwabatangabuhamya bakuwe kumurongo umwe wo gucumura nkibice byakozwe.
Ibyo Mubona Mubyukuri-Ntabwo aribyo Byasezeranijwe
- Gukurikirana ibikoresho: Impapuro zifu, dosiye zinjira muri dosiye, na raporo ya CMM ihujwe na buri gice ID - ntabwo ari umubare wibyiciro gusa
- Nta kwihanganira "bisanzwe".
- Kwemeza imikorere birimo: Ibicuruzwa byose byoherejwe hamwe na hydrostatike yipimisha (kubice birimo umuvuduko) hamwe namakarita yubusa - nta yandi yishyurwa
- Igishushanyo-cya-MIM ibitekerezo mumasaha 48.
Ntabwo dutanga serivisi "MIM-yonyine" cyangwa "imashini-yonyine". Turatanga imikorere-yambere gukora. Niba igice cyawe cyicyuma gikeneye hafi-net-imiterere igoye hamwe nuburinganire bwimiterere yubuso, duhuza byombi-nta ntoki, nta gutakaza amakuru, tutaryoje izindi nzira mugihe hari ibitagenda neza.
Guhitamo Kurenga Aka gatabo
Baza ibishoboka byose uruganda rutunganya ibyuma ibi bibazo bitatu - urebe uko bisubiza:
- "Nyereka ibiti bitatu bya nyuma byo gucana kuri 17-4PH. Imitwe ya ogisijeni yabereye he, kandi ni ikihe gikorwa cyo gukosora?"
- "Unyure muri protocole yawe yo gukuraho inzu ya gare ya 3.2 mm z'uburebure. Ni ikihe gipimo ntarengwa cyo gushyushya wemerera munsi ya 350 ° C-kandi kuki?"
- "Niba igishushanyo cyacu gisaba HRC 42-44 ku cyicaro cya 420 cyacumuye, utabigeraho ukoresheje gusaza nyuma yo gucumura - cyangwa uhindura umwirondoro wacumuye kandi wishingikiriza ku gukomera kw'imvura wenyine?"
Niba igisubizo kidasobanutse, rusange, cyangwa ibyerekeranye "amahame yinganda" utavuze ASTM B964 cyangwa MPIF Standard 35, komeza urebe. Icyuma kitagira ibyuma MIM ifite icyumba cya zeru cyo gutekereza.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yubaka ibice biguma bifunze kuri 200 ° C, bizunguruka bitarinze kuri 1500 RPM, kandi bikarokoka umuvuduko wumuvuduko 10,000 utabanje gutangira microcrack. Turabikora dufata garama yose yifu yicyuma nkimpinduka ya metallurgical-ntabwo ari ibicuruzwa. Sura https:
