Name Detail
Product Precision CNC Milled Parts
Material 1045 Steel
Order Quatity 150 pcs
Tolerance 0.05mm
Technology CNC Milling+Heat
Location US
Application Industry
These parts are gearbox covers used in heavy-duty industrial equipment, such as precision reducers or pumps. Our customer is a mechanical equipment manufacturer who needs a custom cover capable of withstanding internal high pressure, protecting internal components, and ensuring a perfect seal.

Customer Challenges

The customer’s core pain points were as follows:
  • Balance Between Material Performance and Cost: The cover needs sufficient strength and toughness to withstand internal pressure and external impacts. Meanwhile, as a mass-produced part, the material cost must also be reasonable to avoid increasing the overall equipment manufacturing cost.
  • High Flatness and Sealing Performance: The mating surface between the cover and the gearbox body must have extremely high flatness to ensure a perfect seal during assembly, preventing leakage of oil or gas. Even minor unevenness could lead to seal failure and affect equipment operation.
  • Precision Machining of Complex Structures: The cover may include multiple mounting holes, steps for accommodating bearings or seals, and reinforcing ribs for weight reduction or strength enhancement. These complex geometric shapes require high-precision CNC milling to ensure dimensional accuracy and structural integrity.
  • Challenges in Heat Treatment: To achieve the required strength and hardness, the part needs heat treatment after machining. Controlling part deformation during heat treatment and ensuring uniform performance are key factors determining the final quality of the part.

Our Solution: 1045 Steel CNC Milling + Heat Treatment

To fully address the customer’s challenges, we provided the most professional manufacturing solution: integrating two key processes—CNC milling and heat treatment—into our in-house production workflow.

Material Selection: 1045 Steel

  • Excellent Comprehensive Performance: 1045 steel is a medium-carbon structural steel, renowned for its good strength, machinability, and heat treatment properties. After heat treatment, it can achieve high hardness and strength, making it ideal for manufacturing mechanical parts with high performance requirements.
  • Cost-Effectiveness: Compared with alloy steel, 1045 steel is more economical in price, making it a perfect choice for mass-produced, cost-sensitive applications.

Manufacturing Process: CNC Milling + Heat Treatment

Step 1: Precision CNC Milling

We first perform CNC milling on 1045 steel in its raw state. Using advanced CNC milling machines, we precisely mill all geometric shapes of the part—including planes, holes, and slots—by optimizing cutting tools and parameters. We pay special attention to the flatness of the mating surface, controlling it to the micron level through precision milling processes.

Step 2: Heat Treatment

After milling, the parts are sent to our heat treatment workshop. We adopt a professional heat treatment process (quenching and tempering) to enhance the hardness and strength of the parts to meet the customer’s requirements. By precisely controlling heat treatment parameters (such as heating temperature, holding time, and cooling rate), we minimize part deformation to the greatest extent and ensure uniform performance.

Step 3: Final Inspection

The heat-treated parts undergo final quality inspection, including hardness testing, dimensional measurement, and surface flatness checks, to ensure each part meets high standards.

RPS Value and Results

Through our 1045 steel CNC milling + heat treatment service, the customer gained the following core value:
  • Perfect Balance of Performance and Cost: The parts we manufactured not only have excellent mechanical properties (sufficient to withstand high internal pressure and external impacts) but also achieve a highly competitive price through efficient manufacturing processes and reasonable material selection.
  • One-Stop Service: We integrate CNC machining and heat treatment within the same facility. This not only simplifies the customer’s supply chain management but, more importantly, ensures seamless coordination between machining and heat treatment. It effectively eliminates quality risks (such as part damage during transportation) and delivery delays caused by outsourced processing.
  • Stable and Reliable Quality: We implement strict quality control throughout the production process, ensuring consistent dimensions, hardness, and performance of each part—fully meeting the customer’s mass procurement needs.
With our extensive experience in precision steel machining and heat treatment processes, RPS successfully delivered this key industrial part to the customer—once again demonstrating our outstanding capabilities in meeting high-cost-performance and high-precision requirements.
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