Dab tsi yog scraper hniav ua los ntawm?

Wolfram carbide

Tungsten carbide yog cov khoom sib xyaw ua ke ntawm 50% tungsten thiab 50% carbon. Muaj ntau txoj hauv kev siv los tsim cov khoom sib xyaw, feem ntau yog kev sib cuam tshuam ntawm cov hlau tungsten nrog carbon ntawm qhov kub ntawm 1400 txog 2000 ° C. degrees Celsius.

High ceev steels

Kev kub ceev steel (HSS) yog ib qho hlau uas sib xyaw hlau (hlau thiab carbon) nrog rau lwm yam xws li chromium, molybdenum, tungsten, vanadium lossis cobalt. Cov ntsiab lus uas tsis yog hlau tuaj yeem ua rau 20% ntawm HSS muaj pes tsawg leeg, tab sis ib txwm tshaj 7%.

Ntxiv cov ntsiab lus no rau cov hlau tsis nyob hauv nws tus kheej tsim HSS, cov khoom yuav tsum tau kho cua sov thiab tempered.

Kev kub ceev steel (HSS) muaj peev xwm txiav cov khoom nrawm dua li cov pa roj carbon siab, yog li lub npe "siab ceev". Qhov no yog vim nws hardness ntau dua thiab abrasion tsis kam piv rau cov pa roj carbon ntau thiab lwm yam cuab yeej steel.

Vim li cas kev kub ceev steel thiab carbide siv rau scraper hniav?

Cov hniav scraper yuav tsum tau ua los ntawm cov khoom siv tawv dua li cov khoom uas nws khawb kom ua haujlwm zoo. Ntxiv cov ntsiab lus alloying thiab cov txheej txheem tsim khoom, xws li kev kho cua sov uas tau txais kev kub ceev steel, muab nws cov hardness xav tau rau scraping.

Carbide scrapers nyuaj dua HSS. Qhov no tso cai rau lawv siv rau ntau yam khoom siv.

Non-replaceable scraper hniav

Cov hniav tsis tuaj yeem hloov tau yuav luag txhua zaus ua los ntawm kev kub ceev hlau, vim tias tus nqi ntawm kev ua tag nrho cov hniav thiab ncej tawm ntawm carbide yuav siab dhau.

Thaum cov hniav tsis tuaj yeem hloov tau yog ua los ntawm kev kub ceev hlau, tsuas yog ib feem me me ntawm qhov kawg ntawm scraper yog cua sov kho thiab tempered. Thaum tshav kub kub kho thiab tempered cheeb tsam feem ntau sib txawv xim los ntawm tus so ntawm tus ncej.

Cov ntaub ntawv dab tsi tuaj yeem siv cov hniav scraper?