Darajar Micropowder ɗin Kore na Silicon Carbide a Masana'antar Kayan Aiki Masu Daidaito
Tana shiga cikin wuraren aikin kayan aiki na daidai, inda mutum zai iya jin bugun zuciyarsa, iska ta cika da ɗan ƙamshin sanyaya iska. Tsohon Jagora Li, yana kallon wani tubalin aunawa na tungsten carbide da aka niƙa tare da gilashin ƙara girma, yana gunaguni, "A kwanakin nan, wannan aikin yana ƙara zama mai wahala. Kuskure ɗaya, ko da kashi 1000 na faɗin gashi, zai iya karya dukkan kayan aikin!" Hakika, zuciyar kayan aikin daidai - ruwan tabarau na gani, bearings na yumbu, da na'urorin binciken carbide - kowannensu ƙalubale ne mai girma: buƙatun ƙaiƙayi, masu rauni, amma duk da haka suna da matuƙar wahala har zuwa sikelin nanometer. A halin yanzu, wani ƙaramin foda mai haske na kore yana taka rawar "jarumi a bayan fage" - ƙaramin foda na silicon carbide mai launin kore, wanda ba makawa ne a cikin "ƙwallon ƙafa mai matakin micrometer" a cikin kera daidai.
Carbide mai launin kore na silicon (SiC) ba yashi kawai ba ne. Taska ce da aka ƙera daga albarkatun ƙasa kamar yashi mai siffar quartz da man fetur a cikin tanderu mai juriya, tana da siffa mai tauri ta halitta (taurin Mohs na 9.5, wanda ya fi lu'u-lu'u da nitride mai siffar cubic boron). Abin mamaki ma shine gefunan lu'ulu'u masu kaifi da kuma halayen sinadarai masu ƙarfi, wanda ke ba ta damar jure yanayin zafi mai yawa da kuma jure duk wani tsangwama ga kayan da ake sarrafawa. Bayan niƙawa da kuma daidaita su da kyau, waɗannan ƙananan ƙwayoyin kore masu haske, ƙanana kamar ƙananan microns ko ma sassan micron, suna kama da "kamfanin ruwan wukake mai kaifi" wanda aka tsara musamman don magance kayan da ke da tauri, masu rauni sosai tare da daidaito mai mahimmanci.
Magance matsalar: "Makiyin" carbide da yumbu
Kayan aikin yanke Carbide, kujerun ɗaukar yumbu, da zoben rufe silicon carbide suna ko'ina a cikin kayan aikin daidai. Waɗannan kayan suna da tauri sosai har ma da goge-goge na yau da kullun suna fama da shiga cikinsu, wanda ke haifar da ƙarancin inganci da saurin fashewa da fashewa. Zuwan micropowder na silicon carbide kore nan da nan ya canza yanayin ƙasa. "Na kan niƙa ƙarshen binciken carbide da kulawa sosai, kamar ɗinki, kuma gefuna galibi suna guntu," in ji Xiao Wang, wanda ke aiki da injin niƙa saman daidai. "Tun da na yi amfani da ruwan niƙa da aka ƙera da micropowder na silicon carbide kore, na ƙara samun kwarin gwiwa! Yawan ciyarwa ya fi sauri, ƙarfin niƙa yana jin 'ƙarfi,' kuma mafi mahimmanci, ingancin gefen ya fi kyau, tare da ƙarancin guntu." Sirrin da ke bayan wannan yana cikin tauri mai ƙarfi da gefuna masu kaifi na micropowder na silicon carbide kore, wanda ke "yanke" kayan aiki maimakon murƙushe shi da ƙarfi mai ƙarfi. Wannan yana rage lalacewar kayan aiki masu rauni sosai kuma yana ƙara yawan aikin sarrafawa sosai.
Sassaka "Zuciyar Gilashi": Manyan Injinan Goge Na'urorin Nuni da Semi-Conductor
Idanun kayan aikin daidai - ruwan tabarau na gani da prisms, da kuma wafers na semiconductor da guntun firikwensin MEMS - suna buƙatar saman da ya yi laushi kamar fatar jariri (rashin ƙarfi Ra yakan kai matakin nanometer), ba tare da wani sarari ga karce ko lalacewar ƙasa ba. Micropowder na silicon carbide kore yana canzawa zuwa ƙwararren gogewa mai laushi. A lokacin matakan lapping da polishing, ana amfani da micropowder na silicon carbide kore mai girman barbashi mafi kyau (W-grade ko ma mafi kyau) kuma ana rataye shi a cikin wani ruwa mai gogewa na musamman. "Ga masu amfani da quartz crystal oscillators ko saman gani daidai, dakatarwar foda na silicon carbide kore yana aiki mafi kyau fiye da wasu kayan da suka fi tsada," in ji wani ƙwararren masani mai shekaru ashirin na gwaninta a wani bita na gani. "Yana ba da ƙarfin niƙa mai ƙarfi, kuma barbashi iri ɗaya ba sa iya taruwa da karce saman. Saman da aka goge ba shi da sheƙi, kuma layin lalacewar ƙasa ba shi da zurfi, wanda yake da mahimmanci ga watsawar gani da kwanciyar hankali na dogon lokaci na abubuwan gani!" Rashin daidaiton sinadarai na silikon kore shi ma yana tabbatar da cewa tsarin gogewa bai haifar da ƙazanta da gurɓatawa ba, yana tabbatar da tsarkin ɓangaren ƙarshe.
Siffar Daidaito: "Wukar Sassaka" don Ƙananan sassa masu rikitarwa
Kayan aikin da aka daidaita suna cike da nau'ikan ƙananan sassa masu siffar ban mamaki: masu hana yumbu marasa tsari, ramuka a cikin ƙananan kwakwalwan microfluidic, da ƙananan gears da aka yi da simintin carbide. Waɗannan wurare suna da iyaka kuma masu rikitarwa, wanda hakan ke sa kayan aikin gargajiya ba za a iya isa gare su ba. Micropowder na silicon carbide mai kore, tare da fasahar injina ta daidai, ya zama kayan aiki mai ƙarfi don "sassaka ƙananan." Misali, ƙara foda na silicon carbide mai laushi a cikin ruwan niƙa don niƙa madaidaiciya ko yanke waya na iya inganta ingancin niƙa da daidaiton lanƙwasa ga kayan da suka yi tauri sosai. "Yin ramin siririn gashi a cikin bututun carbide yana game da niƙa shi kaɗan kaɗan da manna niƙa da aka cika da foda na silicon carbide kore, tare da kan niƙa lu'u-lu'u mai siririn allura," in ji Zhao, wanda ke kula da gyaran mold daidai. "Yana ƙirƙirar bangon ramuka madaidaiciya da santsi, tare da daidaitaccen sarrafa girma a cikin micrometers. Amfani da wasu foda ba ya haifar da irin wannan sakamako daidai." A cikin injinan da aka taimaka wa ultrasonic, foda mai launin silicon mai launin kore abokin tarayya ne mai kyau don girgiza mai yawa, yana ba da damar haƙa, yankewa, da sarrafa kayan aiki masu tauri da masu rauni.
Amfani da Wannan "Knife na Micron" Mafi Kyau: Kwarewa daga Bitar Bita
Yayin da kayan aikin daidaito ke ci gaba da ƙarami, wayo, da kuma cimma mafi girman aiki, buƙatun daidaiton kera kayan haɗin za su ƙara zama masu tsauri. Fasahar foda ta silicon mai launin kore tana ci gaba da ingantawa. Micropowders tare da ƙananan rarrabawar girman barbashi, ƙananan barbashi (nanoscale), da ƙarin siffofi masu sarrafawa (kamar ɓangaren sphericity don rage karce) sune fannoni masu zafi na bincike da haɓakawa. Injiniyoyi kuma suna ƙoƙari koyaushe don haɗa ƙananan foda na silicon carbide mai launin kore cikin na'urorin sarrafawa masu sarrafa kansu da wayo (kamar tashoshin goge robotic da tsarin niƙa mai daidaitawa tare da sa ido kan layi) don cimma ingantaccen kera daidaito da inganci. A cikin bita na daidaito na gaba, wannan "ƙwallon ƙafa mai matakin micrometer" babu shakka zai zama mai kaifi da wayo.