SUMITOMO ELECTRIC AC5000S Heat Resistant Alloy Turning Guide

4. Turning of high hardness steel automotive parts (47HRC)

In the turning of high hardness steel automotive parts (47HRC), DCGT21.50.5TESI-AC5015S tool was used with cutting parameters of vc=230 SFM, f=0.0012 IPR, ap=0.0315 ", achieving twice the tool life of conventional products. The MESI chip breaker exhibits excellent chip breaking ability at small cutting depths and low feed rates, with good chip control and no entanglement phenomenon. For large-scale production of automotive parts, the stability and long lifespan of AC5015S can significantly reduce the frequency of tool changes and improve production efficiency.

5. Turning of heat-resistant stainless steel automotive parts

In the turning of heat-resistant stainless steel automotive parts, CNMG432EEG-AC5025S cutting tool was used with cutting parameters of vc=260 SFM, f=0.0118 IPR, ap=. 0787 ", achieving stable double tool life. The EEG chip breaker exhibits excellent chip breaking ability at moderate cutting depth and feed rate, with good chip control. For difficult to process materials such as heat-resistant stainless steel, the strong and tough matrix of AC5025S can effectively suppress blade breakage and ensure the stability of the processing process.

Common processing faults and solutions

In the turning of heat-resistant alloys and difficult to machine materials, common fault phenomena include wear on the back cutting surface, crescent wear, boundary defects, chipping, and plastic deformation. The AC5000S series provides clear solutions for these faults.

Fault 1: Rapid wear of the rear blade surface

Reason: High cutting speed or insufficient wear resistance of the coating.

Countermeasure: Choose the AC5005S brand, whose Absotech PVD coating has excellent resistance to back cutting wear; Simultaneously reduce cutting speed or increase feed rate to avoid excessive wear of cutting edges at high temperatures.

Fault 2: Severe wear and tear on the crescent shaped depression

Reason: Excessive cutting temperature leads to diffusion wear.

Countermeasure: Choose the AC5005S grade, whose AlTiSiN based multilayer film structure has excellent resistance to crescent wear; Simultaneously using coolant or reducing cutting speed to minimize heat accumulation in the cutting area.

Fault 3: Boundary Defect

Reason: The work hardening layer causes stress concentration at the cutting edge boundary.

Countermeasure: Choose AC5025S grade, whose newly developed strong and tough hard alloy matrix has excellent boundary resistance; At the same time, increase the feed rate appropriately to avoid repeated friction of the cutting edge on the hardened layer.

Fault 4: Broken blade

Reason: Excessive intermittent cutting impact load or insufficient matrix toughness.

Countermeasure: Choose AC5025S grade, whose strong and tough matrix can effectively absorb impact energy; Simultaneously reduce the feed rate or use a smaller lead angle to minimize cutting force impact.

Fault 5: Plastic deformation

Reason: Plastic flow occurs at the cutting edge under high temperature.

Countermeasure: Choose AC5005S grade, whose heat-resistant hard alloy matrix has extremely high high-temperature hardness and strength, reducing high-temperature deformation by 50%; Simultaneously reduce cutting speed and decrease cutting zone temperature.