Hansheng Automation (Dongguan) Co., Ltd. is one of the most experienced manufacturers and suppliers of custom metal and plastic machined parts in China. If you're going to wholesale bulk cost-effective custom metal and plastic machined parts made in China, welcome to get pricelist and quotation from our factory. Also, customized service and OEM&ODM service are available.
Why Choose Hansheng Automation as Your Custom Project Partner
We focus on providing high-end CNC machining services, offering fast machining, small-batch processing, and high-volume production. All orders are handled end-to-end by Hansheng Automation.
High precision tolerances
It covers machining accuracy from ±0.01mm to ±0.002mm.
Wide range of material processing capabilities
Proficient in processing various metals and high-performance engineering plastics.
Complex Geometry Expert
Multi-axis machining centers can handle complex structures.
From prototype to mass production
Our services are flexible and can meet the needs of different customers.
Our services are flexible and can meet the needs of different customers.
Custom CNC machining process
3/4/5-Axis CNC Milling
Capable of machining parts with complex curved surfaces and multi-faceted chamfers, completing all machining operations in a single setup.
CNC Turning & Turn-Mill
CNC turning and milling centers can simultaneously perform turning, milling, and drilling operations, improving the efficiency and accuracy of metal and plastic milling.
Precision Grinding
Produces parts with extremely high surface finish and dimensional accuracy requirements, offering planar, external cylindrical, and internal cylindrical grinding.
Wire EDM
Processes ultra-hard materials, precision molds, and parts with tiny, complex contours that are difficult to achieve with standard CNC machining.
Case · Precision Linear Rail Mounting Plates for Food & Pharmaceutical Packaging Lines
Customer: Indonesian automation equipment integrator
Material: AL6061-T6
Tolerance requirement: ±0.015 mm full-length flatness & parallelism
Machining Challenges
Thin-profile aluminum plates are highly susceptible to flexural distortion caused by cutting heat and clamping stress. Prior to finish milling, the workpiece surface must also be precisely aligned parallel to the spindle travel path - any deviation results in step marks or angular error on the finished surface.
Our Process Solution
A magnetic/pneumatic grid fixture was used to eliminate the downward clamping deformation caused by conventional strap clamps. Before finish milling, a dial test indicator (DTI) was used for fine runout alignment, bringing the setup parallelism within 0.005 mm. Throughout the process, a rough mill → stress relief → finish mill sequential strategy was applied alongside continuous coolant flow for thermal control.
Results Delivered
Flatness and parallelism measurements consistently achieved ±0.012 mm - exceeding the customer's specified standard. After assembly, the customer confirmed smooth, snag-free rail operation and subsequently placed a volume production order.
CNC Machining Tolerances
| Machining Type | Achievable Tolerance) | Best For |
| General Turning & Milling) | ±0.01mm | Structural components, housing, brackets |
| Precision Turn-Mill | ±0.005mm | Sensor shaft, medical probe, precision connector |
| Precision Grinding | ±0.005mm | Precision shafts and mating pins |
| Super-Finish / Mirror Machining | ±0.002mm | Optical components, medical implants, high-pressure valve cores |
Materials We Machine
| Metals | Engineering Plastics |
|---|---|
| Aluminum Alloys: 6061, 7075, 5052, 2A12 | PEEK: Excellent strength, heat resistance and chemical resistance |
| Stainless Steels: 303, 304, 316L, 17-4PH | Nylon (Nylon/PA): Excellent wear resistance and toughness |
| Alloy Steels/Tool Steels: 42CrMo, 40Cr, SKD11 | Polyoxymethylene (POM / Delrin): High rigidity, low friction, good dimensional stability |
| Titanium Alloys: Grade 2, Grade 5 (TC4) | Polycarbonate (PC): High impact strength and transparency |
| Copper/Brass/Bronze: C3600, H59, QSn6.5-0.1 | Acrylic (PMMA): Excellent optical properties |
| And other special alloys | Teflon (PTFE): Excellent corrosion resistance and non-stick properties |
Our Surface Finishing Options
| Finishing Process | Description |
|---|---|
| As Machined | Retains the original surface after CNC machining, with fine tool marks visible. A standard surface finish of Ra 1.6μm is available. |
| Bead Blasting | Uses tiny glass beads or other abrasives to spray the part surface at high speed, creating a uniform, matte or satin texture without gloss. |
| Anodizing-Type II & III | Type II: Forms a corrosion-resistant oxide film that can be dyed in various colors, providing both protection and decoration. Type III (Hard Anodizing): Forms a thicker and harder oxide film, greatly improving surface hardness and wear resistance. |
| Plating | Deposits a layer of metal on the part surface, such as Nickel plating, Chrome plating, and Zinc plating. |
| Powder Coating | Electrostatically sprays powdered paint onto the part surface and then heats it to cure, forming a tougher and more durable protective layer than traditional spray painting. A wide range of colors is available. |
| Passivation | Removes free iron from the stainless steel surface, enhances its natural rust resistance, and does not change the appearance of the part. |
| Black Oxide | Forms a thin black oxide film on the steel surface, providing certain corrosion resistance and wear resistance. |
| Polishing | Gradually removes tiny surface imperfections through mechanical or chemical methods to obtain a mirror-smooth, highly reflective surface, which can reduce the Ra value to an extremely low level. |
| Heat Treatment | Changes the internal microstructure of the metal through Hardening, Annealing, and Tempering to optimize its hardness, strength, and toughness. |
Why our CNC services are different from others?
Hansheng Automation's relentless pursuit of precision means we pay attention to detail and strive to satisfy our customers through product accuracy, quality, and service. Our large technical team possesses profound DFM (Design for Manufacturing) insights into CNC machining, providing professional advice tailored to your designs.
Our integrated capabilities in CNC machining, casting, and gear manufacturing broaden our business scope. Combining these capabilities allows us to better understand and execute your complex needs, providing you with truly one-stop, high-quality customized CNC machining solutions.
FAQ
Q: What file formats do you accept?
A: 3D (.STP / .STEP, .IGS / .IGES, .X_T), 2D (.PDF, .DWG). It's best to provide both 2D drawings and 3D models so we can better understand your needs and provide a more accurate quote.
Q: What is your typical delivery time? What factors affect it?
A: The specific delivery time depends on the complexity of the project and is affected by factors such as the complexity of the parts' structure, quantity, materials, and surface treatment. We cannot give a precise timeframe, but as the source factory, we can report the production progress to you at any time.
Q: If the materials I need are not on your list, can you procure and process them?
A: The materials shown are those we frequently process and have experience with. We can procure almost all industrial-grade metals and engineering plastics on the market. If you need materials not on the list, please inform us in advance when you inquire.
Q: I'm a little unsure about material selection. Can you provide advice?
A: Yes. You can tell us the application scenario, load, working environment (temperature, corrosion), wear resistance, and budget requirements of the part, and our engineers will recommend the most suitable metal or engineering plastic material for you.
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