Kusiyana Pakati pa Cemented Carbide ndi High Speed ​​Steel (HSS)

Simenti carbide ndi mkulu-liwiro zitsulo ndi mmene kunsi kwa mtsinje mankhwala a refractory zitsulo tungsten (W), onse ali ndi katundu wabwino thermodynamic, ndipo angagwiritsidwe ntchito popanga zida kudula, zisamere pachakudya ozizira zisamere nkhungu ndi otentha ntchito nkhungu, etc. Komabe, chifukwa cha mitundu yosiyanasiyana ya zinthu ziwirizi, zimasiyananso malinga ndi mawonekedwe a makina ndi ntchito.

1. Lingaliro
Cemented carbide ndi alloy material yopangidwa ndi refractory metal carbide monga tungsten carbide (WC) ufa ndi zitsulo zomangira monga cobalt ufa. Dzina lachingerezi ndi Tungsten Carbide/Cemented Carbide. Kutentha kwake kwa carbide ndikokwera kwambiri kuposa kutalika kwachitsulo chothamanga kwambiri.

Chitsulo chothamanga kwambiri ndi chitsulo cha carbon high-alloy chopangidwa ndi tungsten, molybdenum, chromium, cobalt, vanadium ndi zinthu zina, makamaka zopangidwa ndi zitsulo za carbides (monga tungsten carbide, molybdenum carbide kapena vanadium carbide) ndi zitsulo masanjidwewo, ndi mpweya zili 0,7% -1.65%, kuchuluka kwa alloying zinthu ndi 10% -25%, ndipo dzina English ndi High Speed ​​Zitsulo (HSS).

2. Magwiridwe
Onsewa ali ndi makhalidwe a kuuma kwakukulu, mphamvu zambiri, kulimba kwabwino, kuuma kofiira, kukana kuvala, kukana kutentha ndi ntchito ya ndondomeko, ndipo makhalidwewa adzakhala osiyana chifukwa cha maphunziro osiyanasiyana. Nthawi zambiri, kuuma, kuuma kofiira, kukana kuvala ndi kukana kutentha kwa simenti ya carbide ndikwabwino kuposa zitsulo zothamanga kwambiri.

3. Ukadaulo wopanga
Njira yopangira carbide yopangidwa ndi simenti imaphatikizapo njira yopangira ufa, ukadaulo woumba jekeseni kapena kusindikiza kwa 3D.

Njira zopangira zitsulo zothamanga kwambiri zimaphatikizapo ukadaulo wakuponya wamba, ukadaulo wa electroslag remelting, ukadaulo wazitsulo za ufa ndiukadaulo woumba jekeseni.

4. Gwiritsani ntchito
Ngakhale kuti onsewa amatha kupanga mipeni, nkhungu zotentha zogwirira ntchito komanso zozizira zogwira ntchito, ntchito yawo ndi yosiyana. Kuthamanga kwa zida za carbide wamba ndi nthawi 4-7 kuposa zida zachitsulo zothamanga kwambiri, ndipo moyo wautumiki ndi nthawi 5-80. Pankhani ya nkhungu, moyo wautumiki wa carbide umafa ndi 20 mpaka 150 kuposa momwe chitsulo chothamanga kwambiri chimafa. Mwachitsanzo, moyo wautumiki wa mutu wotentha umafa wopangidwa ndi chitsulo cha 3Cr2W8V ndi nthawi 5,000. Kugwiritsiridwa ntchito kwa mutu wotentha kumafa kopangidwa ndi YG20 cemented carbide Moyo wautumiki ndi nthawi 150,000.