Cov khoom siv cobalt yog "zoo dua" dua li HSS nkaus xwb thaum koj thawb mus rau hauv cov ntaub ntawv nyuaj, cov khoom siv hluav taws xob (stainless, tawv alloy steels, cam khwb cia hlau) ntawm qhov nrawm dua lossis hauv kev ua haujlwm ntau lawm; rau kev siv dav dav, HSS dawb feem ntau yog qhov kev xaiv zoo dua ..
Dab tsi cobalt tau hloov pauv
Cobalt steels (M35, M42, thiab lwm yam) tseem yog HSS, tsuas yog alloyed nrog txog 5-8% cobalt kom kub hardness.
Qhov kub hardness ntxiv ua rau lawv khaws cov ntug ntawm qhov kub siab dua, yog li lawv zam kev nrawm dua, siab dua, thiab tsawg dua coolant thaum drilling nyuaj hlau.
Kev lag luam tawm yog txo cov tawv nqaij: lawv nyuaj dua thiab nkig, yog li lawv nti los yog snap yooj yim dua yog tias lawv snag los yog misaligned, raws nraim nrog koj "explode thaum lawv snag" kev.
Qhov twg cobalt yog "zoo dua"
Cobalt yeej thaum:
Koj nyob nraum drilling stainless, hardened steels, cam khwb cia hlau, los yog lwm yam abrasive, hard alloys ..
Koj xav tau cov cuab yeej lub neej thiab kev sib tw (SFM siab dua, khiav ntev dua, tsawg dua sharpening) kom muaj teeb meem ntau dua li tus nqi me ntsis thiab brittleness.
Nyob rau hauv cov ntsiab lus teb cobalt lub tshav kub tsis kam thiab hardness txhais tau tias:
Lub neej ntev ua ntej dulling.
Tsawg rhiab heev rau overheating los ntawm marginal coolant lossis aggressive feeds ..
Qhov twg HSS dawb yog "zoo dua"
HSS tsis tu ncua feem ntau yog qhov zoo dua thaum:
Koj nyob nraum drilling me me hlau, txhuas, tooj dag, yas, los yog ntoo ..
Lub laum yog tuav tes, teeb tsa me ntsis sloppy, los yog muaj kev pheej hmoo tiag tiag ntawm kev ntes me ntsis (cov ntawv nyias, pib ntxhib, cov ces kaum txawv txawv).
Hauv cov xwm txheej no HSS muaj qhov zoo:
Ntau toughness thiab "muab," yog li nws nyiam khoov lossis npub es tsis yog snaps yog tias nws grabs.
Tus nqi qis dua thiab yooj yim rov kho dua tshiab, uas tseem ceeb yog tias koj zoo siab kov lawv koj tus kheej ..
Tus nqi zoo dua li lub hom phiaj dav dav, ua-txhua yam me me uas koj tsis tas yuav menyuam.
Cov tswv yim coj los siv
Kho cobalt raws li cov khoom siv tshwj xeeb rau cov hlau tawv thiab kev ua haujlwm siab dua lossis kev tsim khoom, tsis yog kev hloov kho rau txhua yam.
Rau feem ntau txhais tes drilling thiab cov ntaub ntawv softer, lo nrog HSS zoo thiab ua kom lawv ntse; lawv yuav zam txim ntau dua thiab pheej yig dua los hloov thaum koj ntes lub qhov.
Yog tias koj siv cobalt hauv kev xyaum tes, me nyuam cov khoom noj thiab kev sib haum xeeb thiab zam cov xwm txheej uas qhov me ntsis tuaj yeem ntes tau, lossis koj yuav pom cov "tawg thaum lawv snag" ua tsis tiav.
Yog li cobalt tsis yog universally "zoo dua"; Nws yog qhov zoo dua rau qhov nyuaj, kub, tswj kev drilling, thaum HSS zoo dua rau kev siv dav dav, sib xyaw, thiab siv me ntsis kev tsim txom hauv ntiaj teb.
Siv:
1](https://benchmarkabrasives.com/blogs/news/difference-nruab nrab-hss-thiab-cobalt-drill-bits)
[2](https://www.garrisondales.co.uk/blog/the-tool-box-diaries-2/hss-vs-cobalt-16)
[3](https://benchmarkabrasives.com/blogs/news/hss-vs-cobalt -vs-carbide- xyaum- khoom- dab tsi-rau- xaiv)
[4](https://guesstools.com/cobalt-vs-carbide-drill-bits/)
[5](https://monroeaerospace.com/blog/high-speed-steel-hs s-vs-cobalt-drill-bits-uas{10}}yog-zoo tshaj/)
[6](https://www.reddit.com/r/Machinists/comments/1dmxj6f/cobalt_or_hss_drill_bits_for_hardened_steel/)
[7](https://www.tigerfishtools.com/news/drill-bits-and-} drilling-techniques/hss-vs-cobalt-drill-bits/)
[8](https://www.reddit.com/r/Machinists/comments/nkw83a/does_the_cobalt_in_your_drill_bit_really_matters/)
[9](https://www.reddit.com/r/Machinists/comments/wdyqjg/cobalt_vs_high_speed_steel/)
[10](https://tooltrip.com/hss-drill- ntsis-vs-cobalt/)
Yuav ua li cas tiv thaiv cov khoom cobalt los ntawm snapping thaum drilling?
khaws ciacobalt khoomlos ntawm snapping, qeeb txhua yam, kom lawv txias thiab txhawb nqa, thiab tsis txhob muaj lub caij nyoog ntawm me ntsis rub rau hauv lub qhov. Kev tawg feem ntau yog los ntawm sab-loading, siab dhau lawm, lossis kev kub ceev hauv kev teeb tsa
Ceev, siab, thiab txias
Khiav ntawm qis RPM, tshwj xeeb tshaj yog nyob rau hauv cov hlau tawv; cobalt tiv taus cua sov tab sis tseem tawg yog tias overheated los yog tuav ntawm kev kub ceev
Siv lub zog ruaj khov, ruaj khov: txaus kom tau txais cov chips txuas ntxiv, tsis yog plua plav, tab sis tsis txhob ntau npaum li qhov me ntsis flexes.
Siv cov roj txiav los yog muab tshuaj txhuam thiab "peck laum" (xws li luv luv, rov qab tawm kom tshem cov chips thiab txias) es tsis txhob ntev, txuas ntxiv thawb.
Kev teeb tsa thiab kev sib dhos
Siv lub tshuab xuas nrig ntaus los yog lub qhov tsav tsheb kom lub ntsis pib hauv qhov dimple thiab tsis tuaj yeem taug kev lossis ntes ntawm ntug.
Clamp lub workpiece ruaj khov; kev txav mus los ua rau me ntsis khi thiab snap, tshwj xeeb tshaj yog nrog nkig cobalt alloys ..
Khaws lub laum square rau saum npoo; ib sab kaum sab loads me ntsis sideways thiab dramatically tsub kom breakage
Cov txheej txheem hauv cov ntaub ntawv nyias lossis tawv
Hauv cov ntawv hlau, rov qab ua haujlwm nrog ntoo lossis lwm lub phaj kom lub ntsis tsis lob thaum nws tawg.
Kauj ruam nce mus txog qhov ntau thiab tsawg: xyaum tus tsav me me ua ntej, tom qab ntawd ua kom loj hauv theem es tsis txhob dhia ncaj mus rau qhov kawg.
Siv ceev ceev heev thiab kev saib xyuas ntxiv hauv cov hlau tsis muaj zog los yog cov hlau tawv tawv, uas zoo li "ua hauj lwm nyuaj" thiab lob yog drilled ceev heev.