Investigation of the Effects of Different Coating Types on Cutting Forces in Turning of 17-4 PH Stainless Steels

Yaşar, Saltuk Alper; Uzun, Gültekin; Korkut, İ̇hsan

doi:10.17100/nevbiltek.633204

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…PH13-8Mo steel, a material in the precipitation-hardened (PH) stainless steel group, exhibits high strength, good toughness, and high endurance to general corrosion and stress-corrosion cracking [1,2]. This material maintains its mechanical properties considerably even under harsh environmental conditions [3].…”

Section: Introductionmentioning

confidence: 99%

Understanding the Relationship between Surface Quality and Chip Morphology under Sustainable Cutting Environments

Günay,

Korkmaz

2024

Materials

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Although chip morphology changes according to the machining method and related cutting parameters, chip formation affects the quality of the machined surface. In this context, it is very important to understand the relationship between chip morphology and surface quality, especially in materials that are difficult to machine. In the presented study, the changes in chip morphology, surface morphology, and surface quality criteria (Ra and Rz) that occurred during the milling of precipitation-hardened steel in different cutting environments were analyzed. Milling experiments were carried out in dry, MQL (minimum quantity lubrication), nano-MQL (graphene), nano-MQL (hBN), Cryo, and Cryo-MQL environments using TiAlN-coated inserts and three different cutting speeds and feed rates. While the highest values in terms of Ra and Rz were measured in dry machining, the minimum values were obtained in a nano-MQL (hBN) cutting environment. Due to the lubrication and low friction provided by the MQL cutting environment, chips were formed in thinner segmented forms. This formation reduced the chip curve radius and thus provided a more stable surface morphology. On the other hand, Cryo-ambient gas could not effectively leak into the cutting zone due to the intermittent cutting process, but it increased the brittleness of the chips with the cooling effect and provided a similar surface morphology. The values of minimum Ra and Rz were obtained as 0.304 mm and 1.825 mm, respectively, at a 60 m/min cutting speed and 0.04 mm/rev feed. Consequently, the use of nano-MQL cutting medium is seriously recommended in terms of surface quality in milling operations of difficult-to-machine materials.

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Section: Introductionmentioning

confidence: 99%

Understanding the Relationship between Surface Quality and Chip Morphology under Sustainable Cutting Environments

Günay,

Korkmaz

2024

Materials

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“…17-4 PH paslanmaz çelikler günümüz sanayisinde, yüksek hızlı uçakların dış yüzeylerinde, füze gövdelerinde, deniz taşıtlarının parçalarında, yakıt tanklarında, uçakların iniş-kalkış takımlarında, pompalarda, millerde, somun, cıvata, kesici aletler ve kavramalarda yoğun olarak tercih edilmektedirler [1][2][3][4]. Ancak bu kadar yaygın kullanılmalarına rağmen, 17-4 PH paslanmaz çelik malzemeler yüksek mukavemet ve korozyon direnci özellikleri nedeniyle son derece zor şekillendirilebilmektedirler [5]. Sürtünme/aşınma, malzeme kaybı ve enerji tüketimine neden olan en önemli faktörler arasında yer almaktadır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

17-4 PH Paslanmaz Çeliğin MoS2 Nanoakışkan Koşulları Altında Sürtünme/Aşınma Performansının İncelenmesi

Şirin

2023

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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Bu çalışmada 17-4 PH paslanmaz çelik malzemenin farklı koşullar altında, sürtünme/aşınma performansları incelenmiştir. Deneyler kuru, baz sıvı (bitkisel bazlı yağ) ve molibden de sülfür (MoS2) nanoakışkan koşulları altında gerçekleştirilmiştir. MoS2 nanoakışkanın çökelme veya topaklanmasının önüne geçme adına karışıma sodyum dodesil sülfat (SDS) yüzey aktif maddesi ilave edilmiştir. Sürtünme/aşınma deneylerinde bir pim-disk test cihazı kullanılmıştır. Deneylerde performans değerlendirilmesinde, sürtünme katsayısı, mikrosertlik, titreşim seviyesi, ortalama yüzey pürüzlülüğü (Ra) ve pim yüzey aşınması kullanılmıştır. Pim-disk deneyleri sonucu elde edilen verilere göre, MoS2 nanoakışkan koşulunun diğer koşullara göre daha iyi performans gösterdiği belirlenmiştir. MoS2 nanoakışkan koşulu kuru koşula göre sürtünme katsayısı, titreşim ortalaması, yüzey pürüzlülük Ra ve mikrosertlik değerlerini sırasıyla % 74,51, % 87,22, % 38,69 ve % 6,41 oranında azaltmıştır.

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Investigation of the Effects of Different Coating Types on Cutting Forces in Turning of 17-4 PH Stainless Steels

Cited by 2 publications

References 8 publications

Understanding the Relationship between Surface Quality and Chip Morphology under Sustainable Cutting Environments

Understanding the Relationship between Surface Quality and Chip Morphology under Sustainable Cutting Environments

17-4 PH Paslanmaz Çeliğin MoS2 Nanoakışkan Koşulları Altında Sürtünme/Aşınma Performansının İncelenmesi

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