HSS Asme Extra Long Drill Bit
Kukula Kwazinthu
D L2 L1 | D L2 L1 | D L2 L1 | |||||||||||||||||||
1/4 | 2500 | 9/13 | 12/18 | 7/16 | 4375 | 9/13 | 12/18 | 5/8 | .6250 | 9/13 | 12/18 | ||||||||||
5/16 | .3125 | 9/13 | 12/18 | 1/2 | 5000 | 9/13 | 12/18 | ||||||||||||||
3/8 | 3750 | 9/13 | 12/18 | 9/16 | 5625 | 9/13 | 12/18 |
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![zowonjezera zazitali kubowola pang'ono](http://www.eurocutex.com/uploads/extra-long-drill-bit.jpg)
Kuphatikiza pa kuchuluka kwamafuta, chithandizo cha black oxide chimapanganso matumba ang'onoang'ono pazida zomwe zimatha kugwira zoziziritsa kukhosi pafupi ndi m'mphepete kwa nthawi yayitali.Chifukwa cha chithandizo chakuda chakuda cha oxide pamwamba pazitsulo zothamanga kwambiri, chidacho chimakulitsidwa pakukana kutentha ndikuwonjezereka mu moyo wake wa chida, ndi wosanjikiza woonda wa oxide kuposa zomwe zimagwiritsidwa ntchito pozindikira zida zachitsulo za cobalt;ntchito yake ndi yofanana ndi ya zida zosavala.Ndizotheka kugwiritsa ntchito ma shank ozungulira okhala ndi mitundu yosiyanasiyana ya zida.
Zobowola zokhala ndi gawo logawanika la madigiri 118 kapena 135 zimatanthauza kuti mphamvu yocheperako imafunikira pobowola muzogwirira ntchito, kuteteza kubowola kuti zisatsetsereka pamwamba pa zinthuzo, kudzikonda komanso kuchepetsa kukankha komwe kumafunikira pakubowola.Kubowola kumeneku kuli ndi kamangidwe kake kokhala ndi nsonga yodziyika yokha yomwe imalepheretsa kutsetsereka, kupanga ntchito mwachangu komanso mosavuta.Kuwonjezeka kwa liwiro la kubowola kumatanthauza kuti kutentha kochepa kumapangidwa komanso kuvala kochulukirapo kumatheka, kukulitsa moyo wa kubowola.Mphepete mwake imakhalabe yakuthwa ndipo imapirira kugwiritsidwa ntchito mosalekeza.Mukamagwiritsa ntchito njira yopingasa (kudula kudzanja lamanja), odula a helical-fluted amachotsa tchipisi m'mwamba podula kuti achepetse kutsekeka.
![kubowola motalika](http://www.eurocutex.com/uploads/extra-long-drill.jpg)