High ceev hlau. Nws lub zog thiab kev faib

Niaj hnub no, high-ceev steel tseem mus yuav tus ua cov ntaub ntawv rau zus tau tej cov ntau yam hlau nozzles thiab ib tug txiav cuab tam. Tej alloys yog nquag siv nyob rau hauv qhov siv thiab ua tshuab saws, xyaum, thiab xyaum ua hauj lwm hau. Txawm tias hnyuj hnyo tam sim no ib tug ntau yam ntawm tag nrho cov hom ntawm cemented carbide thiab tej hub puas ntaub ntawv los muab ntau tshaj ua kev ua tau zoo, high-ceev cuab tam steels nrees tuav tau lawv txoj haujlwm.

Lub thoob plaws siv ntawm xws alloys rau zus tau tej cov complex-txiav cov cuab yeej vim muaj ib tug ua ke nyob rau hauv uas siab zog (mus txog 68 HRC) thiab thermal stability (lawv tsis txhob poob lawv cov ua hauj lwm cov khoom txawm tias thaum ib tug kub ntawm 650 ° C) nrog ib tug high school cov viscosity nqi, deb tshaj hais tias ntawm rau carbide puas ntaub ntawv . Ntxiv mus, high-ceev steel muaj tsis tshua muaj high adaptability, uas txhais tau tias zoo workability thiab tej txheej txheem siab.

Yuav ua li cas cov khoom yuav muaj xws li ib tug hlau yog nyob rau alloying ntsiab. Feem ntau, high-ceev steel yog ib tug multicomponent system uas muaj chromium, molybdenum, tungsten, cobalt, thiab vanadium. Lub xub ntiag ntawm lub ntau yam, raws li tau zoo raws li lawv cov ntsiab lus nyob rau hauv feem pua cov ntsiab lus uas qhia nyob rau hauv lub labeling. Tsab ntawv P no txhais tau tias lub steel yog ib tug kev kub ceev, lub tom ntej tooj qhia lub tungsten cov ntsiab lus nyob rau hauv feem pua. Ntxiv cov tsiaj ntawv txhais lub xub ntiag ntawm lwm yam alloying hais, thiab cov zauv los tom qab cov tsiaj ntawv - cov feem pua hnyav feem nyob rau hauv lub hlau. Yog li, tsab ntawv M qhia lub xub ntiag ntawm molybdenum nyob rau hauv lub cev, F - vanadium K - cobalt, A - nitrogen.

Raws li cov ntsiab lus ntawm dopants ceev steel tej zaum yuav txwv kom muab zais rau hauv tungsten, molybdenum, tungsten thiab molybdenum. Ib tug tshwj xeeb cov pab pawg neeg faib co alloyed nrog cobalt. Tej alloys yog feem ntau yog siv nyob rau hauv qhov siv thiab ua cov cuab yeej rau Machining nyuaj qhov chaw ntawm superalloys. High ceev steel, hlau vanadium yog tsuas yog npaj rau zus tau tej cov cuab yeej yog li ntawd-hu ua "finishing" finishes - broaches, reamers thiab lwm yam.

Cov ntau heev thiab tej zaum tus hiob hom ntawm high-ceev steel P18 yog siv rau qhov siv thiab ua txoj zoo li tus thiab threading cov cuab yeej. Txhais tau hais tias tus txheej txheem daim ntawv rau siab zoo ua los ntawm cov hlau no yog ua los feem ntau ntawm cov P9 hom hlau. Los ntawm nws ua mills, cutters thiab cov zoo li.

Los ntawm kev ua hauj lwm kub tsoom fwv ceev steels raug muab faib ua peb pawg: alloys nrog dab tsi, high school, thiab kub siab kuj. Mus rau tus thawj pab pawg neeg yuav tungsten (R18, R9) thiab tungsten-molybdenum (R6M5). Cov qhab nia no yog siv nyob rau hauv qhov kev uas tsis yog-ferrous co, yam ntxwv steels thiab cam khwb cia hlau.

Rau ntaub ntawv ntawm lub thib ob qeb yog yus muaj los ntawm ib tug heev cov ntsiab lus ntawm cobalt, vanadium thiab cov pa roj carbon. Cov feem nrov hom nyob rau hauv cov pab pawg neeg - R6M5F3. Vanadium steel yus muaj los ntawm lub siab coj kuj. Lawv tsuas yog loj drawback - phem sanding, vim hais tias cov hardness ntawm vanadium carbides yog tsis inferior mus rau zoo xws taw qhia elektrokorundovogo sib tsoo log.

Thaum kawg, peb cov qeb ntawm steel yus muaj los ntawm cov uas tsis muaj feem pua ntawm cov pa roj carbon cov ntsiab lus, uas ua rau lawv haum rau kev kho mob los ntawm tshav kub-resistant, stainless hlau thiab titanium alloys. Lwm cov yam ntxwv feature ntawm lawv - ib tug loj tus naj npawb ntawm alloying ntsiab. Yuav kom qhov no pab pawg neeg xws li tej hom li 3V20K20H4F, V11M7K23 li al.