Table of Contents

1. Introduction
2. Key Material Properties for CNC Turned Parts
3. Common Materials Used in CNC Turning
4. Dongguan Longying Company Solutions
5. References

Introduction

Precision CNC turning has revolutionized modern manufacturing, allowing for the creation of intricate parts with tight tolerances. Selecting the appropriate material is crucial to leverage the full benefits of CNC turning. This article discusses the key material properties that optimize CNC turning and examines common materials used in the industry. Further, solutions offered by Dongguan Longying will be detailed to highlight their role in advancing CNC turned part production.

Key Material Properties for CNC Turned Parts

• Tensile Strength: A higher tensile strength suggests that the material can withstand more stress before failure. For CNC turned parts, materials with tensile strengths exceeding 300 MPa are often preferred.
• Hardness: Measured using the Rockwell or Brinell scale, the hardness of a material determines its ability to resist deformation. Ideal materials often have a hardness value ranging from 50 to 200 HB.
• Malleability and Ductility: Materials that can undergo plastic deformation without fracture are suitable, with a typical elongation percentage at fracture being above 10%.
• Thermal Conductivity: Efficient thermal conductivity is crucial for heat dissipation in high-speed turning, with desirable materials having conductivity values above 100 W/mK.
• Corrosion Resistance: CNC turned parts can suffer from corrosion, necessitating the use of materials like stainless steel with a minimum of 10.5% chromium content for effective resistance.

Common Materials Used in CNC Turning

Below is a list of frequently utilized materials and their suitability for CNC turning:

• Aluminum Alloys: Known for excellent machinability, aluminum is characterized by low density (2.7 g/cm³) and good corrosion resistance, making it ideal for lightweight applications.
• Steel Alloys: Offering a balance between strength (up to 1500 MPa) and machinability, steels like 1018 and 4140 are widely used in heavy-duty operations.
• Stainless Steel: Renowned for corrosion resistance, grades like 304 and 316 feature tensile strengths around 500 MPa and exceptional durability in harsh environments.
• Brass: With excellent thermal and electrical conductivity (105 W/mK), brass is suitable for decorative and electrical components.
• Titanium Alloys: Notable for high strength-to-weight ratio and corrosion resistance, titanium (340-345 MPa) is used in aerospace and medical parts, despite its challenging machinability.
• Plastics: Materials like POM (polyoxymethylene) and PTFE (polytetrafluoroethylene) provide low friction and resistance to wear, suitable for customized, non-metallic components.

Dongguan Longying Company Solutions

Dongguan Longying specializes in delivering high-quality CNC turned parts with a focus on customized material solutions. Their adaptive manufacturing processes accommodate complex geometries and precise specifications across a diverse range of materials. With investments in cutting-edge CNC technology and rigorous quality control systems, Longying guarantees components that meet stringent industrial standards.

Special emphasis is placed on the analysis and selection of materials according to customer requirements. For instance, their aerospace clients benefit from materials like titanium due to the excellent weight reduction it offers without compromising strength. Meanwhile, automotive customers often rely on steel alloys and aluminum for efficient mass production and energy efficiency.

References

• Machining Materials and Their Selection. (2021). Engineering and Manufacturing Journal.
• Comparative Analysis of CNC Turned Materials. (2022). International Journal of Advanced Manufacturing Technology.
• Dongguan Longying Company Profile. (2023). Corporate Publications.
• Metallurgical Properties: Their Role in Machining. (2023). Materials Science Quarterly Review.