Guide to Optimizing Machining for Crystallume Materials

The performance and value of precision components hinge on every minute detail of their machining. While material selection is critical, the true determinant of excellence lies in the mastery of machining techniques. As a pioneer in material technology, Crystallume recognizes the profound impact of machining processes on product performance. This guide offers optimized techniques for milling, turning, and drilling to maximize the potential of Crystallume materials.

This guide is not a rigid set of rules but a compilation of best practices derived from extensive experience. Each application scenario is unique, and the interplay between material properties and machining parameters often dictates success. The recommendations herein serve as a reliable foundation, encouraging iterative refinement to achieve optimal results.

Milling, a versatile machining method, is widely used for manufacturing complex components. Achieving optimal results with Crystallume materials requires careful consideration of material properties, tool selection, and cutting parameters. Below are detailed milling guidelines for various materials.

Aluminum alloys are favored in aerospace and automotive industries for their lightweight and machinability. Recommended parameters vary by silicon content:

• Aluminum with 5-8% silicon (356, 308, 242, 208):
  • Rough milling: Cutting speed: 2000-5000 fpm (610-1525 m/min); feed per tooth: 0.010-0.020 ipt (0.254-0.508 mm/t).
  • Finish milling: Cutting speed: 2000-6000 fpm (610-1830 m/min); feed per tooth: 0.005-0.010 ipt (0.127-0.254 mm/t).
• Cast aluminum with 8-12% silicon (354, 357, 380):
  • Rough milling: Cutting speed: 1500-4000 fpm (460-1220 m/min); feed per tooth: 0.007-0.015 ipt (0.178-0.381 mm/t).
  • Finish milling: Cutting speed: 1500-5000 fpm (460-1525 m/min); feed per tooth: 0.004-0.008 ipt (0.102-0.204 mm/t).
• Cast aluminum with 12-18% silicon (390):
  • Rough milling: Cutting speed: 1000-2000 fpm (305-610 m/min); feed per tooth: 0.005-0.010 ipt (0.127-0.254 mm/t).
  • Finish milling: Cutting speed: 1000-3000 fpm (305-915 m/min); feed per tooth: 0.002-0.006 ipt (0.050-0.150 mm/t).

• Babbitt: Cutting speed: 700-1100 fpm (210-335 m/min); feed per tooth: 0.003-0.010 ipt (0.076-0.254 mm/t).
• Brass: Cutting speed: 2000-4000 fpm (610-1220 m/min); feed per tooth: 0.001-0.008 ipt (0.025-0.200 mm/t).
• Bronze: Cutting speed: 900-1350 fpm (275-410 m/min); feed per tooth: 0.003-0.008 ipt (0.076-0.200 mm/t).
• Carbon materials: Cutting speed: 500-2000 fpm (150-610 m/min); feed per tooth: 0.0003-0.012 ipt (0.008-0.305 mm/t).
• Carbon fiber: Cutting speed: 500-2000 fpm (150-610 m/min); feed per tooth: 0.003-0.015 ipt (0.076-0.381 mm/t).
• Copper: Cutting speed: 750-1500 fpm (230-460 m/min); feed per tooth: 0.001-0.008 ipt (0.025-0.200 mm/t).
• Fiberglass: Cutting speed: 750-1500 fpm (230-460 m/min); feed per tooth: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Green ceramics: Cutting speed: 500-1500 fpm (150-460 m/min); feed per tooth: 0.002-0.010 ipt (0.050-0.254 mm/t).
• Unfilled plastics: Cutting speed: 1000-4000 fpm (305-1220 m/min); feed per tooth: 0.003-0.020 ipt (0.076-0.508 mm/t).
• Wood: Cutting speed: 3300-9800 fpm (1000-3000 m/min); feed per tooth: 0.004-0.030 ipt (0.102-0.762 mm/t).

Turning is an efficient method for machining rotational components like shafts and discs. Precision parameter control is essential for Crystallume materials. Below are detailed turning guidelines.

• Aluminum with 5-8% silicon (356, 308, 242, 208):
  • Rough turning: Cutting speed: 2000-5000 fpm (610-1525 m/min); feed per revolution: 0.010-0.025 ipt (0.254-0.635 mm/t).
  • Finish turning: Cutting speed: 2000-6000 fpm (610-1830 m/min); feed per revolution: 0.005-0.010 ipt (0.127-0.254 mm/t).
• Cast aluminum with 8-12% silicon (354, 357, 380):
  • Rough turning: Cutting speed: 1500-4000 fpm (460-1220 m/min); feed per revolution: 0.007-0.020 ipt (0.178-0.508 mm/t).
  • Finish turning: Cutting speed: 1500-5000 fpm (460-1525 m/min); feed per revolution: 0.004-0.008 ipt (0.102-0.204 mm/t).
• Cast aluminum with 12-18% silicon (390):
  • Rough turning: Cutting speed: 1000-2000 fpm (305-610 m/min); feed per revolution: 0.005-0.010 ipt (0.127-0.254 mm/t).
  • Finish turning: Cutting speed: 1000-3000 fpm (305-915 m/min); feed per revolution: 0.002-0.006 ipt (0.050-0.150 mm/t).

• Babbitt: Cutting speed: 700-1100 fpm (210-335 m/min); feed per revolution: 0.003-0.010 ipt (0.076-0.254 mm/t).
• Brass: Cutting speed: 2000-4000 fpm (610-1220 m/min); feed per revolution: 0.003-0.015 ipt (0.076-0.381 mm/t).
• Bronze: Cutting speed: 900-1350 fpm (275-410 m/min); feed per revolution: 0.003-0.010 ipt (0.076-0.254 mm/t).
• Carbon materials: Cutting speed: 500-2000 fpm (150-610 m/min); feed per revolution: 0.005-0.015 ipt (0.127-0.381 mm/t).
• Carbon fiber: Cutting speed: 500-2000 fpm (150-610 m/min); feed per revolution: 0.003-0.020 ipt (0.076-0.508 mm/t).
• Copper: Cutting speed: 750-1500 fpm (230-460 m/min); feed per revolution: 0.003-0.010 ipt (0.076-0.254 mm/t).
• Fiberglass: Cutting speed: 750-1500 fpm (230-460 m/min); feed per revolution: 0.001-0.015 ipt (0.025-0.381 mm/t).
• Green ceramics: Cutting speed: 500-1500 fpm (150-460 m/min); feed per revolution: 0.002-0.020 ipt (0.050-0.508 mm/t).
• Unfilled plastics: Cutting speed: 1000-4000 fpm (305-1220 m/min); feed per revolution: 0.003-0.020 ipt (0.076-0.508 mm/t).
• Wood: Cutting speed: 3300-9800 fpm (1000-3000 m/min); feed per revolution: 0.004-0.030 ipt (0.102-0.762 mm/t).

Drilling is a common method for creating holes in components. Special attention must be paid to hole quality and precision when working with Crystallume materials. Below are detailed drilling guidelines.

• Aluminum with 5-8% silicon (356, 308, 242, 208): Cutting speed: 2000-6000 fpm (610-1830 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Cast aluminum with 8-12% silicon (354, 357, 380): Cutting speed: 1500-5000 fpm (460-1525 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Cast aluminum with 12-18% silicon (390): Cutting speed: 1000-3000 fpm (305-915 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).

• Babbitt: Cutting speed: 700-1100 fpm (210-335 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Brass: Cutting speed: 2000-4000 fpm (610-1220 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Bronze: Cutting speed: 900-1350 fpm (275-410 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Carbon materials: Cutting speed: 500-2000 fpm (150-610 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Carbon fiber: Cutting speed: 500-2000 fpm (150-610 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Copper: Cutting speed: 750-1500 fpm (230-460 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Fiberglass: Cutting speed: 750-1500 fpm (230-460 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Green ceramics: Cutting speed: 500-1500 fpm (150-460 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Unfilled plastics: Cutting speed: 1000-4000 fpm (305-1220 m/min); feed per revolution: 0.001-0.010 ipt (0.025-0.254 mm/t).
• Wood: Cutting speed: 3300-9800 fpm (1000-3000 m/min); feed per revolution: 0.003-0.025 ipt (0.076-0.635 mm/t).

The above parameters are general recommendations. Actual performance depends on factors such as tool material, cooling methods, and machine rigidity. Thorough testing and validation are strongly advised before full-scale production.