SUMITOMO ELECTRIC AC5000S Heat Resistant Alloy Turning Guide

SUMITOMO ELECTRIC AC5000S Heat Resistant Alloy Turning Guide

In the fields of aerospace, automotive parts, industrial machinery, and energy equipment manufacturing, turning difficult to machine materials such as high-temperature alloys, heat-resistant stainless steel, and high hardness steel has always been a severe challenge faced by process engineers. These materials often have extremely high temperature strength, low thermal conductivity, and severe work hardening tendency, which leads to tool wear, crescent wear, boundary defects, chipping, and even plastic deformation during cutting. Faced with these processing difficulties in the "search for solutions" stage, the AC5000S series coated hard alloy material provides a systematic technological breakthrough solution. This series includes three grades: AC5005S, AC5015S, and AC5025S, which are respectively designed for high-speed and efficient machining, universal preferred recommendation, and heavy intermittent cutting conditions. Through the collaborative innovation of PVD coating technology and substrate materials, it provides a complete tool solution for turning heat-resistant alloys and rare materials from precision machining to rough machining.

Core technological breakthrough: Absotech PVD coating and dual substrate innovation

To understand why the AC5000S series stands out in difficult to machine material turning, it is necessary to deeply analyze its coating architecture and substrate technology. Traditional CVD coatings often cause chipping during the processing of high-temperature alloys due to their high brittleness and insufficient resistance to thermal cracking; However, conventional PVD coatings are prone to rapid wear of the back cutting surface at high temperatures and speeds. The AC5000S series adopts the new PVD coating technology Absotech, with the core being an AlTiSiN based multilayer thin film structure. This structure has excellent heat resistance, resistance to crescent wear, and resistance to rear blade wear. In the testing of high-speed cutting Inconel 718 (44HRC), the wear of the back cutting surface of AC5005S was only half of that of conventional S05 PVD competitors at 12 minutes, demonstrating a 2-fold wear resistance advantage.

In addition to breakthroughs in coating technology, the AC5000S series has also developed two innovative hard alloy substrates for different processing conditions. The first type is a newly developed tough hard alloy matrix, which introduces innovative sintering processes to significantly improve toughness while maintaining matrix hardness, and has excellent boundary resistance, thereby significantly enhancing the anti chipping performance. This type of substrate is particularly suitable for heavy intermittent cutting and rough machining conditions. The second type is a newly developed heat-resistant hard alloy matrix, which has extremely high high-temperature hardness and strength, and can achieve excellent wear resistance and plastic deformation resistance. In the high-temperature deformation assessment, the deformation of AC5005S was reduced by 50% compared to conventional methods. This means that in the high-temperature environment generated by high-speed cutting, the cutting edge of the tool can maintain a more stable geometric shape, thereby ensuring machining dimensional accuracy and surface quality.

Three major brand positioning and troubleshooting selection strategies

The AC5000S series is not a single brand, but consists of three members with clear positioning, and engineers can accurately match according to specific processing conditions and fault phenomena.

AC5005S: The first choice for high-speed and efficient processing

AC5005S is positioned as an efficient processing grade with 1.5 times the wear resistance of conventional grades. Its application range covers continuous cutting to light intermittent cutting, especially suitable for precision machining conditions that pursue high cutting speed and long tool life. When there are problems such as rapid wear of the back cutting surface, severe crescent wear, or high-temperature plastic deformation during processing, AC5005S is the preferred solution. In the turning of Inconel 718 aviation parts, CNMG644EEG-AC5005S cutting tool was used with cutting parameters of vc=180 SFM, f=0.0118 IPR, ap=. 1181 ", achieving twice the tool life of competitor C. In the processing of Ni based heat-resistant alloy industrial machine parts, TNMG332-EEF-AC5005S cutting tools were used. Under the conditions of vc=100 SFM, f=. 0051 IPR, ap=. 0315 ", the tool life reached 5 times that of conventional products.

AC5015S: Preferred Recommendation for General Processing

AC5015S is positioned as the preferred recommended grade, which also has 1.5 times the wear resistance and anti chipping performance of conventional grades. Its application range covers continuous cutting, light intermittent cutting to medium intermittent cutting, and is a universal choice for processing difficult to machine materials. When encountering mixed faults with both wear and slight blade breakage during processing, AC5015S can provide the best balance. In the turning of Inconel 718 aviation parts, the SNMG432EEG-AC5015S tool was used with cutting parameters of vc=165 SFM, f=. 0059 IPR, ap=. 0787 ", achieving twice the tool life of competitor B. In the machining of Inconel 625 aviation parts, using CNMG423EGU-AC5015S cutting tools, under the conditions of vc=165 SFM, f=0.0118 IPR, ap=0.0197 ", the tool life reaches 1.6 times that of competitor C. In the machining of Inconel 713C automotive parts, the CNMG432EEX-AC5015S tool was used to achieve double tool life under the conditions of vc=330 SFM, f=0.0047 IPR, ap=0.0118 ".