Kodi PDC Bit Cutter ndi chiyani?

Daimondi ndi chinthu chovuta kwambiri chodziwika. Kuuma uku kumapereka katundu wapamwamba podula zinthu zina zilizonse. PDC(Polycrystalline diamond compact) ndiyofunika kwambiri pobowola chifukwa imaphatikiza miyala ya diamondi yaying'ono, yotsika mtengo, yopangidwa ndi anthu kukhala milu yayikulu, yolumikizana mwachisawawa yomwe imatha kupangidwa kukhala mawonekedwe othandiza otchedwa matebulo a diamondi. Matebulo a diamondi ndi gawo la chodula chomwe chimalumikizana ndi mapangidwe. Kupatula kuuma kwawo, matebulo a diamondi a PDC ali ndi mawonekedwe ofunikira kwa ocheka-bowola: Amalumikizana bwino ndi zida za tungsten carbide zomwe zimatha kumangirizidwa (kumangirizidwa) kumatupi. Ma diamondi, paokha, sangalumikizane, komanso sangamangiridwe ndi kuwomba.

Daimondi yopangira

Grit ya diamondi nthawi zambiri imagwiritsidwa ntchito pofotokoza timbewu tating'ono (≈0.00004 in.) ta diamondi yopangidwa yomwe imagwiritsidwa ntchito ngati chinthu chofunikira kwambiri kwa odula a PDC. Pankhani ya mankhwala ndi katundu, diamondi yopangidwa ndi munthu ndi yofanana ndi diamondi yachilengedwe. Kupanga grit ya diamondi kumaphatikizapo njira yosavuta yopangira mankhwala: mpweya wamba umatenthedwa ndi kuthamanga kwambiri komanso kutentha. Koma m’zochita, kupanga diamondi sikophweka.

Makhiristo a diamondi omwe ali mu grit ya diamondi amapangidwa mosiyanasiyana. Izi zimapangitsa kuti zinthuzo zikhale zolimba, zakuthwa, ndipo, chifukwa cha kuuma kwa diamondi yomwe ili nayo, imakhala yosavala kwambiri. M'malo mwake, mawonekedwe opangidwa mwachisawawa omwe amapezeka mu diamondi zomangika amachita bwino pakumeta ubweya kuposa diamondi zachilengedwe, chifukwa diamondi zachilengedwe ndi makhiristo a kiyubiki omwe amasweka mosavuta m'malire awo mwadongosolo, makristali.

Grit ya diamondi imakhala yosakhazikika pakatentha kwambiri kuposa diamondi zachilengedwe, komabe. Chifukwa chothandizira zitsulo chomwe chimatsekeredwa mumagulu a grit chimakhala ndi kuchuluka kwamafuta ochulukirapo kuposa diamondi, kukulitsa kosiyana kumayika zomangira za diamondi-to-diamondi pansi pa shear ndipo, ngati katundu ndi wokwanira, kumayambitsa kulephera. Ngati zomangira zilephera, ma diamondi amatayika msanga, kotero PDC imataya kuuma kwake ndi kuthwa kwake ndipo imakhala yosagwira ntchito. Pofuna kupewa kulephera koteroko, odula a PDC ayenera kuziziritsidwa mokwanira pobowola.

Matebulo a diamondi

Kuti apange tebulo la diamondi, grit ya diamondi imayikidwa ndi tungsten carbide ndi zitsulo zomangira kuti zikhale zosanjikiza za diamondi. Mawonekedwe ake ndi opindika, ndipo amayenera kukhala okhuthala momwe angathere chifukwa kuchuluka kwa diamondi kumawonjezera moyo wovala. Matebulo a diamondi apamwamba kwambiri ndi ≈2 mpaka 4 mm, ndipo kupita patsogolo kwaukadaulo kudzakulitsa makulidwe a tebulo la diamondi. Magawo a tungsten carbide nthawi zambiri amakhala ≈ 0.5 in. okwera ndipo amakhala ndi mawonekedwe ophatikizika ndi miyeso yofanana ndi tebulo la diamondi. Magawo awiri, tebulo la diamondi, ndi gawo lapansi, zimapanga chocheka

Kupanga kwa PDC cutter.

Kupanga PDC kukhala mawonekedwe othandiza kwa odula kumaphatikizapo kuyika grit ya diamondi, pamodzi ndi gawo lapansi, muchotengera choponderezedwa kenako ndikutentha kwambiri komanso kupanikizika.

Odula PDC sangaloledwe kupitirira kutentha kwa 1,382°F [750°C]. Kutentha kochuluka kumapangitsa kuti pakhale kutha msanga chifukwa kusiyana kwa kutentha pakati pa binder ndi diamondi kumapangitsa kuti makristasi a diamondi aphwanyidwe patebulo la diamondi. Mphamvu zomangira pakati pa tebulo la diamondi ndi gawo lapansi la tungsten carbide zimayikidwanso pachiwopsezo chifukwa chakukula kwamafuta.

Ngati muli ndi chidwi ndi zinthu za tungsten carbide ndipo mukufuna zambiri ndi zambiri, mutha KULUMIKIZANA NAFE pa lamya kapena makalata kumanzere, kapena TITUMIZANI MAIME pansi pa tsamba.