Cov Khoom Siv Ntawm Cov Kev Kub Ceev Hlau Tuam Khoom II
Cov Khoom Siv Ntawm Cov Kev Kub Ceev Hlau Tuam Khoom
2. Lub zog, tawv thiab kub tiv
Lub zog thiab tawv ntawm cov hlau nrawm yog qhov siab tshaj ntawm cov khoom siv uas twb muaj lawm. Yog li ntawd, high-ceev steel cuab yeej tuaj yeem tiv thaiv loj cuam tshuam loj heev, uas yog ib qho ntawm cov laj thawj tseem ceeb vim li cas qib ceev yog tseem siv dav. Lub zog thiab tawv ntawm cov hlau ceev yog cuam tshuam nrog lis loj me, carbide faib, residual kev ntxhov siab thiab kev ntxhov siab ntau. Nrog rau kev nce ntawm cov nyom kev loj hlob thiab carbide faib khoom hauv cov hlau, lub zog thiab tawv ntawm cov hlau kuj qis dua. Ua kom cov ntsiab lus ntawm carbon, vanadium thiab cobalt hauv cov hlau ceev ceev yuav txo lub zog thiab tawv ntawm cov hlau. Thaum cov ntsiab lus drilling yog ntau heev, nws cov tawv yuav txawm raug txo kom ze rau qhov ntsuas nruj me ntsis ntawm kev tso cai carbide, yog li nws tsis tuaj yeem tiv taus loj dua.
Lub thermal stability ntawm universal high-ceev steel yog 550 ~ 600 degree, thiab superhard high-ceev steel tuaj yeem ncav cuag 650 ~ 700 degree. Txawm hais tias lub thermal ruaj ntawm high-ceev steel cuab yeej yog siab dua li ntawm ob lub zog steel, uas yog qhov ntau dua li alloy-ceev steel tuaj yeem ua siab ntev li 100m / min lossis ntau dua.
Thaum cov ntsiab lus ntawm C, V thiab Co Co-ceev steel nce, qhov kub siab ntawm cov hlau tuaj yeem txhim kho, thiab cov txiaj ntsig ntawm kev ntxiv C yog qhov tseem ceeb tshaj plaws. Ntau qhov kev ua tau zoo ntawm cov khoom siv hluav taws xob nrawm ua rau lub qhov tho, lub hom phiaj tseem ceeb yog txhawm rau txhim kho nws qhov kub siab. Lub hardness ntawm high-carbon drilling suphard high-ceev steel w2mo9cr4VCO8 Thaum qhov kub tsis tau mus txog qhov nyuaj ntawm WC-co carbide uas muaj ntau cobalt.
3. Txheej Txheem Ua Haujlwm
The forging performance, heat treatment performance and cutting performance of high-speed steel are better, and it is easy to make a variety of complex shapes of tools than carbide, which is the main reason why high-speed steel still dominates in tool materials, especially in complex tools. Kev sib tsoo yog ib qho ntawm cov txheej txheem tseem ceeb tshaj plaws uas txiav txim siab cov cuab yeej zoo. Nyob rau hauv cov cuab yeej tsim, tus nqi ntawm kev sib tsoo yog ntau heev, qee zaum suav nyiaj rau 50% ntawm tus nqi ntawm cov khoom siv thiab kev kho cua sov tsuas yog suav rau 10% mus rau 20%. Hauv qhov no, qhov zoo ntawm kev sib tsoo ua kev ua tau zoo feem ntau ua cov neeg ua haujlwm tseem ceeb rau cov neeg ua haujlwm txaus siab siv qee qib ntawm cov tsheb hlau siab. Txawm hais tias lub siab vanadium kev kub ceev steel cuab yeej tau hnav zoo thiab txhim kho tau zoo heev vim nws cov kev sib tsoo tsis zoo.
Yog xav paub ntxiv, thov hu rau Shaungji riam.
