The effect of cryogenic treatment on tapping

Uzun, Gültekin; Korkut, İ̇hsan

doi:10.1007/s00170-012-4529-x

Cited by 14 publications

(9 citation statements)

References 21 publications

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“…The number of chamfers is 4-5 threads and this decreases the moment distributed to the threads, ending up with a lower cutting moment. 9,16,17 The change of cutting torque depending on the Q values that emerged during threading under dry-cutting conditions at different cutting speeds with the M6 tap is given in Figure 6.…”

Section: Resultsmentioning

confidence: 99%

The effects of cutting conditions on the cutting torque and tool life in the tapping process for AISI 304 stainless steel

Uzun¹,

Korkut²

2016

Mater. Tehnol.

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In this study tapping operations were carried out using taps of different diameters and with different cutting parameters on AISI 304 austenitic stainless steel. The cutting performances of the taps were determined according to the cutting torques created during the threading and the depth of cut for each cutting feed (Q). With the aid of the obtained experimental data the solution suggestions to the problems in the threading operations for AISI 304 steel were developed. As a result it was specified that the increasing amount of cutting in each pass directly affected the cutting torque. It was determined that there was a tendency to decrease the cutting torque with the increasing depth of cut for each cutting feed. The best tool-life results for an M5 tap were obtained at a 5-mm Q value, whereas for M6 taps it was at a 3-mm Q value. Keywords: tapping, AISI 304, machinability V {tudiji je bilo izvedeno vrezovanje notranjih navojev z uporabo navojnega vreznika z razli~nimi premeri in razli~nimi nivoji vrezovalnih parametrov v avstenitnem jeklu AISI 304. Zmogljivosti vrezovanja navojnih vreznikov so bile dolo~ene glede na moment, ki je nastal med vrezovanjem navojev v globino, za vsako hitrost podajanja pri vrezovanju (Q). S pomo~jo dobljenih eksperimentalnih podatkov so bili postavljeni predlogi re{itev problemov pri postopku vrezovanja navojev pri jeklu AISI 304. Pokazalo se je, da pove~anje vrezovanja pri vsakem prehodu neposredno vpliva na moment pri vrezovanju. Ugotovljeno je, da se zmanj{uje moment vrezovanja s pove~anjem globine reza pri vsakem podajanju pri vrezovanju. Najbolj{a zdr`ljivost orodja pri M5 vrezniku je bila dose`ena pri vrednosti Q = 5 mm, pri vrezniku M6 pa pri vrednosti Q = 3 mm. Klju~ne besede: vrezovanje notranjih navojev, AISI 304, strojna obdelava

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Section: Resultsmentioning

confidence: 99%

The effects of cutting conditions on the cutting torque and tool life in the tapping process for AISI 304 stainless steel

Uzun¹,

Korkut²

2016

Mater. Tehnol.

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“…The increased feed values caused the chip volume removed per unit time to increase and consequently growing of cutting forces. 19,20 With the increasing feed amount, the feed force increased in the interval of 200-500 %. From the graphs it was observed that feed force was 80-164 N at the 0.15 mm/r feed amount, 120-254 N at 0.225 mm/r and 132-282 N at 0.30 mm/r.…”

Section: Evaluation Of Cutting Forcesmentioning

confidence: 98%

Effect of cutting parameters on the drilling of AlSi7 metallic foams

Uzun¹,

Gökmen²,

Çinici³

et al. 2017

Mater. Tehnol.

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In this study, the behaviors of Al matrix metallic foams, produced by the powder-metallurgy method, against the hole-drilling operation were examined. The stirred Al, 7 % Si and 1 % TiH2 powders were pressed in a mould under uniaxial pressure (600 MPa) and then deformed, and in this way foamable block samples were obtained. The block samples were subjected to a foaming process at 710°C. The obtained samples were drilled at different cutting speeds (10, 30, 50, 70) mm/min and feed rates (0.15, 0.225, 0.30) mm/r with drill tips of different diameters (4, 5 and 6) mm. It was observed that the foam affected the chip breakings and chip adhesions increased in proportion to the cutting speed. In the deviation from circularity, the feed rate turned out to be a more effective parameter than the cutting speed. Keywords: foams, cutting, machining, tooling V {tudiji je bilo preiskovano obna{anje kovinskih pen na osnovi Al, izdelanih po metodi metalurgije prahov, pri vrtanju luknje. Me{anica Al, 7 % Si in 1 % TiH2 prahov je bila stisnjena v orodju z enoosnim tlakom (600 MPa) in potem deformirana, da so bili dobljeni vzorci sposobni za penjenje. Vzorci so bili izpostavljeni procesu penjenja pri temperaturi 710°C. Dobljeni vzorci so bili vrtani pri razli~nih hitrostih rezanja (10, 30, 50, 70) mm/min in hitrostih podajanja (0,15, 0,225, 0,30) mm/r, s svedri z razli~nimi premeri (4, 5, 6) mm. Ugotovljeno je, da pena vpliva na lomljenje ostru`kov, oprijemanje ostru`kov pa se pove~uje proporcionalno s hitrostjo rezanja. Pokazalo se je, da na odstopanja od kroga bolj vpliva hitrost podajanja kot pa hitrost rezanja.

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“…PRINT ISSN: 2149-4916 E-ISSN: 2149-9373 © 2017 Gazi Akademik Yayıncılık Talaşlı imalat işlemlerinden olan kılavuzla vida açma diğer talaşlı imalat operasyonlarına kıyasla daha karmaşık bir işlemdir. Vida profillerinin ve yüzeylerinin arzulanan toleranslar dâhilinde olması cıvata ve somun bağlantısının doğru ve istenilen kalitede olması için oldukça önem arz etmektedir [5][6][7]. Toplam işlenebilir zamanının yaklaşık %22'sini alan vida açma operasyonunda kılavuz geometrisinin ve kesme şartlarının doğru belirlenmesi verimlilik açısından da dikkate alınması gereken önemli unsurlardandır [8,9].…”

Section: Gi̇ri̇ş (Introduction)unclassified

AL 5083 Alüminyum Malzemeye Vida Açma İşleminde Kılavuz Geometrisinin Etkisinin İncelenmesi

Gökçe¹

2020

GMBD

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Bu çalışmada balistik özellikleri ve yüksek korozyon direnç ile karakterize edilen Al 5083 H116 malzemesine HSS kılavuz takımlarla vida açma işlemi uygulanmıştır. Oluşturulan vida dişleri ile teorik olarak hesaplanan standart vida dişlerine ait diş dibi ve diş üstü ölçüleri arasındaki farklar kesme hızı ve kılavuz geometrisi açılarından incelenmiştir. Deneyler 2, 4 ve 8 m/dk. kesme hızları ile kuru şartlarda yapılmıştır. Oluşturulan vidalar eksenleri doğrultusunda tel erezyon tezgâhında kesilmiş ve elde edilen kesitler optik mikroskop ile görüntülenmiştir. Bu görüntüler bilgisayar destekli tasarım programına aktarılarak gerekli ölçümler yapılmıştır. Ölçümler sonucunda Al 5083 H116 alüminyum alaşımına diş açılmasında helis açısına sahip kılavuzların kullanılması diş profillerinin nispeten daha düzgün çıkmasına ve standart değerlere en yakın sonuçlar elde edilmesine olanak sağladığı görülmüştür.

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The effect of cryogenic treatment on tapping

Cited by 14 publications

References 21 publications

The effects of cutting conditions on the cutting torque and tool life in the tapping process for AISI 304 stainless steel

The effects of cutting conditions on the cutting torque and tool life in the tapping process for AISI 304 stainless steel

Effect of cutting parameters on the drilling of AlSi7 metallic foams

AL 5083 Alüminyum Malzemeye Vida Açma İşleminde Kılavuz Geometrisinin Etkisinin İncelenmesi

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