Ongororo yeZvinhu Zvenyama zveCemented Carbide Plates

Cemented carbide plates, inoumbwa nehard carbide phases (senge tungsten carbide) nemasimbi anosunga (kazhinji cobalt), anoshandiswa zvakanyanya mukugadzira machining, migodhi, uye engineering nekuda kwehunhu hwavo hwakanaka hwemuviri. Ongororo yakadzama yezvimiro zvavo zvemuviri zvakakosha kuti unzwisise chiyero chekushandisa kwavo uye mabhenefiti ekuita.

1. Density

Density chinhu chakakosha chemuviri wecemented carbide plates, kazhinji kubva pa12.0 kusvika 15.0 g/cm³. Uku kusimba kwakanyanya kunobva pahuremu hweatomu hwepamusoro hwetungsten mu tungsten carbide (chikamu chikuru). Iyo yakakwira density inopa mahwendefa ane yakanaka dimensional kugadzikana - iwo haanyanyi kukonzeresa pasi pesimba rekunze kana shanduko yetembiricha, iyo yakakosha kune chaiyo machining maturusi anoda yakasimba saizi kudzora. Pamusoro pezvo, iyo yakakwira density inokwidziridza mahwendefa 'kukanganisa kuramba kune imwe nhanho, sezvo dense chimiro chinogona kutora zvirinani uye kuparadzira ekunze simba rekuita.

2. Kuoma uye Wear Resistance

Kuomarara ndechimwe chezvinhu zvinonyanya kuzivikanwa zvecemented carbide plates. Kuoma kwavo kweVickers kunowanzopfuura 1500 HV, yakakwira zvakanyanya kupfuura iyo yesimbi inomhanya-mhanya uye zvimwe zvakajairika zvishandiso zvekushandisa. Uku kuomarara kwepamusoro kunofungidzirwa kune yakaoma carbide phases, iyo inoumba yakasimba skeleton chimiro. Zvine hukama zvakanyanya nekuomarara kupfeka kuramba - kuomarara kwakanyanya kunoreva kuti mahwendefa anogona kuramba kukwenya, abrasion, uye kunamatira kwezvinhu panguva yekushandiswa. Semuyenzaniso, mukucheka simbi, simende carbide mahwendefa anochengeta akapinza kucheka mipendero kwenguva yakareba pasina kupfekwa pasi neiyo workpiece zvinhu, zvakanyanya kuwedzera hupenyu hwebasa rezvishandiso. Zvisinei, kuoma kwemahwendefa kunogona kugadziriswa nekushandura zviri mukati mesimbi binder: kuwedzera cobalt zvinyorwa kunoderedza kuoma zvishoma asi kunovandudza kuoma, asi kuderera kwekobalt kunowedzera kuoma uye kupfeka kusagadzikana.

3. Simba uye Kuoma

Nepo simende mahwendefa e carbide akaoma zvakanyanya, simba rawo uye kuomarara zviratidzo zvakakosha zvekuita kwekuita. Simba ravo rinoputika (TRS) rinowanzobva pa1500 kusvika 3000 MPa, richivagonesa kumirisana nemasimba ekukotama panguva yekugadzira kana kuita migodhi. Kusimba, uko kunoreva kugona kuramba kutyoka pasi pesimba, kunonyanya kutariswa nesimbi binder. Iyo cobalt binder inoumba ductile phase pakati pezvakaoma carbide tsanga, kudzivirira makatsemuka kubva kupararira nekukasira kana ndiro inobatwa. Uku kuenzana kwesimba repamusoro uye kuomarara kuri pakati nepakati kunodzivirira dambudziko rehutete hunotambudza zvimwe zvinhu zvakanyanya-zvakaoma, kugadzira simende mahwendefa ecarbide akakodzera kune ese akakwirira-mutoro uye anokanganisa-anononoka kushanda mamiriro.

4. Thermal Kuwedzera Coefficient uye Thermal Conductivity

Thermal yekuwedzera coefficient yecemented carbide plates ishoma, kazhinji pakati pe5×10⁻⁶/°C uye 7×10⁻⁶/°C. Uku kuderera kwekuwedzera kwekushisa kunovimbisa kuti mahwendefa haaone kuchinja kwakakosha kwechimiro kana akafumurwa nekuchinja kwekushisa (somuenzaniso, panguva yekucheka kwepamusoro-soro, apo kukwesha kunobudisa kupisa). Uku kugadzikana kwakakosha kuchengetedza machining kurongeka, sezvo deformation yekupisa ichizotungamira mukutsauka muhukuru hweworkpiece. Panyaya yekupisa kwekupisa, marata ane simende ecarbide ane mwero wekupisa kwekushisa (100-150 W/(m·K)), izvo zvinovabvumira kuendesa kupisa kwakagadzirwa nekukurumidza kune chibatiso chemidziyo kana yekutonhodza system. Kupisa uku kunodzivirira kupisa kwenzvimbo, izvo zvinogona kupfavisa chikamu chebinder uye kuderedza kuoma kweplateti uye kusapfeka.

Muchidimbu, zvimiro zvemuviri zvecemented carbide plates-high density, kuomarara kwakanakisa uye kusapfeka, simba rakadzikama uye kuomarara, uye kugadzikana kwekushanda kwemafuta-pamwe chete vanoona kushanda kwavo kwepamusoro mune dzakasiyana siyana maindasitiri. Kunzwisisa zvivakwa izvi kunobatsira mukukwenenzvera kusarudzwa uye kushandiswa kwecemented carbide plates, kuwedzera kukosha kwavo kunoshanda.