Sarudzo Guide

ChiiTwist Drills?

Twist drill ishoko rekare remhando dzakasiyana-siyana dzezvibooresa, zvakaita sezvibooreso zvesimbi, zvibooreso zvepurasitiki, zvibooreso zvehuni, zvibooreso zvepasi rose, masonry nekongiri.Madhiri ese anomonereka ane hunhu hwakafanana: Nyere dzehelical dzinopa madhiri zita rawo.Different twist drills anoshandiswa zvichienderana nekuoma kwezvinhu zvichagadzirwa.

By helix angle

Twist drill

Type N

Inokodzera zvinhu zvakajairika sesimbi yakakandwa.
Mhando yeN yekucheka wedge inosiyana-siyana nekuda kweiyo twist angle ye approx.30°.
Nzvimbo yekona yemhando iyi ndeye 118 °.

Type H

Yakanakira zvinhu zvakaoma uye brittle zvakaita sebronze.
Rudzi rweH helix angle yakatenderedza 15°, izvo zvinoita kuti pave nekona hombe yeweji ine kucheka kushoma asi kwakagadzikana zvakanyanya.
Type H madrills anewo point angle ye118°.

Type W

Inoshandiswa pazvinhu zvakapfava sealuminium.
Iyo helix angle ye approx.40° inoguma nekakona kadiki keweji kune yakapinza asi isina kugadzikana yekucheka.
Nzvimbo yekona ndeye 130 °.

Nezvinhu

High Speed ​​Steel (HSS)

Zvinhu zvacho zvinogona kukamurwa kuita mhando nhatu: simbi yekumhanya, cobalt-ine simbi yekumhanya uye yakasimba carbide.

Kubva 1910, high-speed simbi yakashandiswa sechinhu chekucheka kweanopfuura zana remakore.Parizvino ndiyo inonyanya kushandiswa uye yakachipa zvinhu zvekucheka maturusi.High-speed simbi zvibooresa zvinogona kushandiswa mune ese ari maviri madhiri uye amore yakagadzikana nharaunda senge muchina wekuchera.Chimwe chikonzero nei simbi yepamusoro inogara kwenguva yakareba inogona kunge iri yekuti maturusi ekucheka simbi anogona kudzokororwa kakawanda.Nekuda kwemutengo wayo wakaderera, haingoshandiswe chete kugaya zvibooresa, asi zvakare inoshandiswa zvakanyanya mukushandura maturusi.

High Speed ​​Steel (HSS)
Cobalt-ine high-speed simbi

Cobalt-ine High-Speed ​​Steel (HSSE)

Cobalt-ine high-speed simbi ine kuoma kuri nani uye kuoma kwakatsvuka kupfuura simbi yakakwirira.Kuwedzera kwekuoma kunonatsiridza kusapfeka kwayo, asi panguva imwechete inobayira chikamu chekuoma kwayo.Zvakafanana nesimbi yepamusoro-soro: inogona kushandiswa kuwedzera nhamba yenguva kuburikidza nekukuya.

Carbide (CARBIDE)

Cementcarbide isimbi-based composite zvinhu.Pakati pavo, tungsten carbide inoshandiswa seye matrix, uye zvimwe zvimwe zvinhu zvinoshandiswa sezvisungo zve sinter nekupisa isostatic kudzvanya uye nhevedzano yemaitiro akaomarara.Kuenzaniswa nesimbi yepamusoro-soro maererano nekuoma, kuoma kwakatsvuka uye kupfeka kusagadzikana, yakagadziridzwa zvikuru.Asi mutengo wesimende yekucheka maturusi ekucheka zvakare unodhura zvakanyanya pane yakakwirira-kumhanya simbi.Cemented carbide ine mabhenefiti akawanda kupfuura ekare maturusi emidziyo maererano nehupenyu hwematurusi uye kumhanya kwekugadzirisa.Mukudzokororwa kwezvishandiso, maturusi ekukuya anodiwa anodiwa.

Carbide (CARBIDE)

Nekupfekedza

Uncoated

Uncoated

Coatings inogona kukamurwa zvakaganhurwa mumhando shanu dzinotevera zvichienderana nehukuru hwekushandisa:

Zvishandiso zvisina kuvharwa ndizvo zvakachipa uye zvinowanzo shandiswa kugadzira zvimwe zvinhu zvakapfava zvakaita sealuminium alloy uye low carbon steel.

Black Oxide Coating

Oxide coatings inogona kupa lubricity iri nani pane maturusi asina kuvharwa, zvakare ari nani muoxidation uye kupisa kupisa, uye anogona kuwedzera hupenyu hwesevhisi neinopfuura 50%.

Black Oxide Coating
Titanium nitride coating

Titanium Nitride Coating

Titanium nitride ndiyo inonyanya kurongedzerwa zvinhu, uye haina kukodzera kumidziyo ine kuomarara kwakanyanya uye yakanyanya kugadzirisa tembiricha.

Titanium Carbonitride Coating

Titanium carbonitride inogadzirwa kubva kune titanium nitride, ine yakakwirira yepamusoro tembiricha kuramba uye kupfeka kuramba, kazhinji yepepuru kana yebhuruu.Inoshandiswa mumusangano weHaas kumichina yekushanda yakagadzirwa nesimbi yakakandwa.

Titanium carbonitride coating
Titanium Aluminium Nitride Coating

Titanium Aluminium Nitride Coating

Titanium aluminium nitride inonyanya kupikisa kutonhora kwepamusoro kupfuura zvese zviri pamusoro apa, saka inogona kushandiswa munzvimbo dzakakwirira dzekucheka.Somuenzaniso, kugadzirisa superalloys.Inokodzerawo kugadzirwa kwesimbi uye simbi isina tsvina, asi nekuti ine aluminium zvinhu, kemikari inoitika kana ichigadzira aluminium, saka dzivisa zvinhu zvekugadzira zvine aluminium.

Inokurudzirwa Drilling Speeds In Metal

Drill Size
  1MM 2MM 3MM 4MM 5MM 6MM 7MM 8MM 9MM 10MM 11MM 12MM 13MM
StainlessSIMBA 3182 1591 1061 795 636 530 455 398 354 318 289 265 245
SIMBI 4773 2386 1591 1193 955 795 682 597 530 477 434 398 367
PLAINCARBONSIMBA 6364 3182 2121 1591 1273 1061 909 795 707 636 579 530 490
BRONZE 7955 3977 2652 1989 1591 1326 1136 994 884 795 723 663 612
BHASS 9545 4773 3182 2386 1909 1591 1364 1193 1061 955 868 795 734
Mhangura 11136 5568 3712 2784 2227 1856 1591 1392 1237 1114 1012 928 857
ALUMINIUM 12727 6364 4242 3182 2545 2121 1818 1591 1414 1273 1157 1061 979

Chii chinonzi HSS drills?
HSS drills zvibooreso zvesimbi izvo zvinoratidzirwa neavo epasi rose yekushandisa mikana.Kunyanya mumadiki uye epakati akatevedzana kugadzirwa, mumamiriro asina kugadzikana machining uye pese painoda kuomarara, vashandisi vachiri kuvimba nesimbi inomhanya kwazvo (HSS/HSCO) yekuchera maturusi.

Kusiyana kweHSS drills
Simbi yepamusoro-soro yakakamurwa kuita nhanho dzemhando dzakasiyana zvichienderana nekuoma uye kuoma.Alloy zvikamu zvakaita se tungsten, molybdenum uye cobalt ndizvo zvinokonzeresa zvivakwa izvi.Kuwedzera alloy components kunowedzera kutsamwa kupikisa, kupfeka kuramba uye kushanda kwechishandiso, pamwe chete nemutengo wekutenga.Ichi ndicho chikonzero zvakakosha kufunga kuti makomba mangani anofanira kuitwa mune zvinyorwa pakusarudza zvinhu zvekucheka.Kune mashoma mashoma maburi, iyo inonyanya kudhura-inoshanda yekucheka zvinhu HSS inokurudzirwa.Yepamusoro-yemhando yekucheka zvinhu senge HSCO, M42 kana HSS-E-PM inofanirwa kusarudzirwa kugadzirwa kwakatevedzana.

Metal_Drill_Bit_Speed_vs._Size_of_Drill_Chart_graph
HSS giredhi HSS HSCO(zvakare HSS-E) M42(zvakare HSCO8) PM HSS-E
Tsanangudzo Yakajairika high-speed simbi Cobalt alloyed high speed simbi 8% cobalt alloyed high speed simbi Powder metallurgically yakagadzirwa nesimbi yakakwirira-kumhanya
Composition Max.4.5% cobalt uye 2.6% vanadium Min.4.5% cobalt kana 2.6% vanadium Min.8% cobalt Zvakafanana zvinongedzo seHSCO, kugadzirwa kwakasiyana
Shandisa Kushandiswa kwese Shandisa kune yakakwirira yekucheka tembiricha / kutonhora kusingafadzi, simbi isina tsvina Shandisa nezvinhu zvakaoma-kucheka Shandisa mukutevedzana kugadzira uye kune yakakwirira maturusi ehupenyu zvinodiwa

HSS Drill Bit Sarudzo Chati

 

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