Menene PCD saw blade?

Menene PCD saw ruwa?

Ganin cewa mutane da yawa ba su san da yawa game da ma'anar PCD saw blade, har ma da masu aikin da ke da alaƙa da PCD saw blade, ma'anar da wasu daga cikinsu suka bayar bai isa ba!

Cikakken sunan Sinanci na PCD saw ruwa shine taƙaitaccen "polycrystalline diamond saw blade", wanda PCD shine taƙaitaccen bayanin PolyCrystalline Diamond (wanda aka fassara zuwa Sinanci azaman lu'u-lu'u polycrystalline), don haka ana kiran PCD gani ruwan lu'u-lu'u. Ga ruwa, amma saboda lu'u lu'u-lu'u don yankan dutse ya bayyana da yawa fiye da yadda PCD ya gani, Huangrui Tool ya yi imanin cewa yana da sauƙi don haifar da rudani don kawai kiran PCD gani ruwa kamar ruwan lu'u-lu'u. Ba a yi masa mummunar fahimta ba don kiran shi PCD diamond saw blade.
Kamar yadda muka sani, lu'u-lu'u shine mafi wuya abu da ke wanzuwa a yanayi. Yana da crystal octahedral guda na yau da kullun wanda ya ƙunshi abubuwan carbon da aka kafa a cikin zurfin ɓangaren duniya ƙarƙashin aikin babban matsin lamba da zafin jiki. Karfi, duk valence electrons suna da hannu wajen samar da covalent bonds, babu electrons kyauta da ke wanzu, don haka taurin lu'u-lu'u yana da girma sosai, taurin lu'u-lu'u ya ninka na corundum sau 4 da na quartz sau 8!

Fasahar zamani ta dade tana iya samar da lu'u-lu'u na lu'u-lu'u guda ɗaya, kuma PCD tana amfani da cobalt da sauran karafa a matsayin masu ɗaure polycrystallize lu'u-lu'u na lu'u-lu'u na lu'u-lu'u guda ɗaya zuwa lu'u-lu'u polycrystals a ƙarƙashin takamaiman yanayi. Taurin wannan lu'u-lu'u na polycrystalline (watau PCD) shine Ko da yake ba shi da ƙarfi kamar lu'u-lu'u guda ɗaya, taurin har yanzu ya kai 8000HV, wanda shine sau 80 ~ 120 na siminti carbide! Haka kuma, tsarin thermal conductivity na PCD shine 700W/MK, wanda shine sau 2 ~ 9 na siminti carbide, har ma sama da na PCBN da jan karfe. Saboda haka, ta amfani da PCB abu a matsayin saw ruwa shugaban, da zafi canja wurin gudun ne musamman sauri a lokacin yankan. Bugu da ƙari, ƙididdiga na haɓakar haɓakar thermal na PCD abu ne kawai kashi ɗaya cikin biyar na na siminti carbide, kuma adadin juzu'i shine kawai kashi ɗaya bisa uku na na siminti carbide. Waɗannan kaddarorin sun ƙayyade cewa tsinken tsintsiya ta amfani da kayan PCD kamar yadda mai yankan kai yayi daidai da jikin ganga. A karkashin wasu yanayi, ba kawai rayuwar sabis na saw ruwa ne a ka'idar a kalla sau 30 mafi girma fiye da na carbide saw ruwa, amma kuma ingancin yankan surface ne mafi alhẽri. Haka kuma, alaƙar da ke tsakanin kayan PCD da karafa marasa ƙarfe da kayan da ba na ƙarfe ba kaɗan ne. Lokacin yankan karafa da ba na ƙarfe ko kayan da ba na ƙarfe ba, shugaban mai yanke PCD a kan tsintsiya ma ba shi da yuwuwar haɗi da sawdust fiye da shugaban abin yankan carbide. A ƙarshe, akwai wani fa'ida: PCD abu yana da ƙarfi acid da alkali juriya kwanciyar hankali, wanda kuma yana da matukar amfani ga ingancin kwanciyar hankali na PCD saw ruwan wukake.

PCD saw ruwa shine a yi amfani da siminti carbide azaman matrix don kayan PCD fiye da 1mm, samar da haɗin gwiwa ta hanyar sintering ko wasu matakai masu latsawa, sannan a ƙarshe sanya a jikin farantin ƙarfe na alloy na sawn, don maye gurbin. da wuya abu tare da PCD abun yanka shugaban. Yana da tsinkayyar tsintsiya, wanda ke inganta rayuwar sabis na gandun daji da kwanciyar hankali na yankan.

A halin yanzu, da yawa ga masu amfani da gani ruwa za su zaɓi yin amfani da PCD lu'u-lu'u saw ruwan wukake tare da matsananci-dogon sabis rayuwa, wanda aka yafi amfani a furniture masana'antu masana'antu, wadanda ba ferrous karfe sarrafa masana'antu da wuya a yanke, da aluminum gami kofa da taga. masana'antun don maye gurbin wukake na carbide na asali. A gami saw ruwa na kai ba zai iya kawai yanke ci gaba na dogon lokaci, amma kuma ba ya bukatar maye gurbin saw ruwa akai-akai. Tsawon rayuwa, gabaɗaya, yana rage yawan farashin yankan idan aka kwatanta da yin amfani da igiyoyin carbide saw!