Trustworthy 5-axis CNC machining 7075 aluminum parts engineering machinery parts

CNC machining of aluminum engineering components refers to the manufacturing process of aluminum alloy parts that bear specific structural or functional loads in fields such as aerospace and high-end equipment. These components require lightweight construction while possessing excellent specific strength, dimensional stability, and dynamic fatigue performance.

High-strength 5-axis CNC machining 7075 aluminum parts engineering machinery parts

I. Performance-Driven Collaborative Design for CNC Machining of Aluminum

While ensuring mechanical properties, the topology of the part is optimized to reduce stress concentration and ensure good machinability. Simultaneously, the material state is precisely selected according to performance requirements, and the subsequent heat treatment processes are planned accordingly.

II. High Rigidity, Low Stress Machining

1. Stress Pretreatment and Datum Establishment: For large aluminum forgings or thick plates, vibration aging can be performed before machining to release the original internal stress of the material. Subsequently, a unified process datum for positioning throughout the entire process is established through large-plane milling or precision wire EDM, which is fundamental to ensuring the accuracy of multiple clamping operations.

2. High-Efficiency Roughing with Layered and Partitioned Machining: High-speed, large-depth-of-cut, and high-feed machining is used to quickly remove excess material. The key is symmetrical machining in partitions to balance the heat and stress generated during cutting, minimizing the overall tendency for deformation.

3. Semi-finishing and Stress Rebalancing: After roughing, the internal stress of the part is redistributed. The purpose of semi-finishing is not only to further approximate the final shape, but also to create a relatively balanced intermediate state of stress by uniformly removing material, laying a stable foundation for finishing. After this process, artificial aging is often performed to stabilize the stress.

4. Precision Forming and Surface Control: Using brand-new tools or ultra-fine grain carbide tools, final finishing is performed in a constant temperature environment. For high-load-bearing surfaces and mating surfaces, a small-pitch, small-depth-of-cut scraping process is used to directly obtain an ideal surface with high smoothness and low residual stress, which is crucial for fatigue life.

III. Verification-Driven Post-Processing

1. Post-machining processing and verification are the final guarantee to ensure that engineering components meet design performance.

2. Heat Treatment and Dimensional Stabilization: According to material and design requirements, solution treatment and artificial aging are performed to achieve the target mechanical properties. Subsequently, secondary stabilization aging or deep cryogenic treatment must be performed to minimize the potential for dimensional changes over time and ensure long-term dimensional stability.

3. Functional Surface Treatment and Non-Destructive Testing: Depending on the operating conditions, hard anodizing, micro-arc oxidation, and other treatments are performed to improve surface hardness, wear resistance, and corrosion resistance. After completion, fluorescent penetrant testing or X-ray inspection must be conducted to ensure that the parts are free of internal defects such as cracks and porosity.

4. Comprehensive Performance Verification: The final inspection is comprehensive. In addition to full-dimensional scanning using a coordinate measuring machine, hardness testing and metallographic analysis are required for key components. For components subjected to dynamic loads, vibration testing is the final and most important step in verifying their lifespan.

Product Packaging

Packaging Details

1. Commercial packaging: 1pc/plastic bag + color box +carton + pallet;
2. Industrial packaging: (1). plastic tube + carton + pallet; (2). plastic bag + kraft paper + carton + pallet;
3. According to the requirement of customer.
   

   FAQ

   Q1: Where can I get product & price information?

   A1: Send us an inquiry e-mail, we will contact you once we received your mail.

   Q2: How long will I get the sample?

   A2: Depends on your specific items, within 3-7 days generally.

   Q3: What kinds of information do you need for a quote?

   A3: Kindly please provide the product drawings in PDF, if provide in STEP or IGS will be better.

   Q4: What are the payment terms?

   A4: We accept 50% as a payment deposit, when the goods are prepared, we shoot photos or videos for your check, and then you can pay the balance. For small quantities, we accept Paypal, the commission will be added to the order. For big amounts, T/T is preferred.

   Q5: How to deliver the goods?

   A5: We deliver the products by courier company.

   Q6: Are you a trading company or factory?

   A6: We are factory direct with 17 experienced engineers and more than 50 employees as well approximate 3,000m2 workshop area.

   Q7: What shall we do if we don't have drawings?

   A7: Please send your sample to our factory, then we can copy and provide you better solutions. If send us pictures or drafts with dimensions(Length, Height, Width), CAD or 3D file will be made for you.

   Q8: Can we get some samples before mass production?

   A8: Absolutely yes.

   Q9: Will my drawings be safe after sending them to you?

   Q10: Is it possible to know the operation status of my products without visiting your company?

   A10: We will offer a detailed production schedule and send weekly reports with digital pictures and videos which show the