High-Precision CNC Turned Automotive Parts With Nitriding Treatment For Extended Service Life
In the demanding world of automotive manufacturing, precision and durability are non-negotiable—and high-precision CNC turned automotive parts with nitriding treatment stand out as a testament to both. These components, crafted through advanced CNC turning processes, boast tight tolerances and intricate designs, ensuring seamless integration into critical automotive systems, from engine assemblies to transmission mechanisms.
What truly elevates their performance is the specialized nitriding treatment applied post-machining. This surface-hardening process infuses nitrogen into the material, creating a hard, wear-resistant outer layer while retaining the core’s toughness. The result? Parts that resist friction, corrosion, and fatigue even under extreme temperatures and constant mechanical stress—qualities that directly translate to extended service life for vehicles.
Whether it’s a precision shaft, a valve component, or a custom fastener, these nitrided CNC turned parts are engineered to meet the rigorous standards of modern automotive engineering. They don’t just fit; they enhance reliability, reduce maintenance needs, and contribute to the overall efficiency of the vehicles they power. For manufacturers and suppliers aiming to deliver excellence, these parts aren’t just components—they’re a promise of longevity and performance on the road.
15+ years of experience in CNC machining:
JINGXIN has 15+ years of experience in custom CNC precision machining services and is located in Dongguan City, China.
JINGXIN's professional team adopts reasonable manufacturing processes, solutions, and reliable workmanship to supply high-quality, one-stop custom CNC precision machined parts made of stainless steel, aluminum, iron, etc.
Nitriding Treatment Application:
Nitriding treatment forms nitrides (such as iron nitrides) on the metal surface, greatly enhancing the surface hardness (typically reaching 50-100 HRC), which is much higher than that of the base material itself. This high-hardness surface layer can effectively resist friction, wear, and scratches, extending the service life of parts—especially suitable for high-frequency contact mechanical components like gears, bearings, and shafts.
The diffusion of nitrogen atoms creates compressive stress in the surface layer of the material, offsetting the tensile stress generated in parts under cyclic loads. This improves their fatigue resistance, which is crucial for components subject to repeated impacts or vibrations (such as automotive engine valves and connecting rods), reducing the risk of fracture due to fatigue.
The formed nitrided layer has a dense structure, which can block direct contact between moisture, oxygen, and corrosive media with the base material. This enhances the metal's corrosion resistance to a certain extent, especially in humid or mildly corrosive environments.
Unlike processes such as overall quenching, nitriding treatment only strengthens the surface layer, while the base material retains good toughness and ductility. This "hard exterior and tough interior" characteristic allows parts to withstand surface wear while resisting impact loads, avoiding brittle fracture.
It is suitable for various alloy structural steels, tool steels, stainless steels, etc., and is particularly effective for steels containing alloying elements such as chromium, molybdenum, and aluminum. It is widely used in high-precision, wear-resistant components in automotive, machinery, aerospace, and other fields.
Our Advantages :
1. Advanced Equipment: We operate a world-class facility with a variety of precision CNC machines—Brother, HAAS, Mazak; vertical milling centers, and precision milling & turning lathes (including 3-, 4-, and 5-axis models).
2. Complete In-House Machining Capability: We meet the ISO 2768-F/M machining standard tolerance, and produce parts in a wide range of sizes and complexities. For maximum CNC milling capability, please refer to the machining list below.
3. Raw Material Assurance: We 100% ensure raw materials comply with RoHS standards and meet design specifications. Material certificates and SGS reports are available for reference upon request. Available Materials: Steel, aluminum, stainless steel, titanium, and engineering plastics (e.g., PEEK, PC, POM), etc. For more details, please refer to the list below.
4. Order Quantity: Accept orders starting from 1 unit; Supporting both short-run precision CNC milling & turning and large-volume production.
5. Quick Turnaround: The quick quote in hours and fast delivery in days. Skilled & professional team (R&D);
6. Our Customers are from the EU and North America.
Quality Assurance:
What we do to ensure you get the quality parts from JINGXIN ?
We hereby declare that we will be responsible for our precision machined parts at all times.
1. 100% inspection before shipping and inspection report for each piece of precision CNC milling parts is available.
(ISO quality control is implemented throughout the entire production process).
2. We have served Volvo Auto Corp since 2016 as an approved precision CNC milling company in China. with no complaints so far.
3. In case any precision machined part that is outside the tolerance or your special specifications, we will remake and deliver as soon as possible; 100% at our expense.
4. For past years, JINGXIN CNC milling company has manufactured thousands of precision CNC machined components
for our customers. 99.9% satisfaction feedback drives us to supply more quality precision machined parts to meet customer requirements.
| Equipment | Brand | Qty | Range | Accurany |
| Projector | Tianle | 1 | 100*200*300 | 0.005MM |
| CMM | Serein | 1 | 600*800*600 | 0.001MM |
| Height Gauge | TRMOS | 2 | 800 | 0.001MM |
| microcalliper | Mitutoyo | 6 | 0~50 | 0.001MM |
| caliber rule | Mitutoyo | 20 | 0~300 | 0.01MM |
| dial gauge | Mitutoyo | 5 | | 0.001MM |
| Pin gauge | Chuan liang | 1set | 0.5~30 | 0.01MM |
| R Guage | Chuan liang | 1 | 0.5~10 | 0.1MM |
| Plane | Lu yang | 3 | 1000*1500 | 0.005MM |
| Hardness tester | Luoshi | 1 | 0~90 | |
| Surface roughness tester | Mitutoyo | 1 | | Ra0.05 |
| Coating thickness tester | Mitutoyo | 1 | | 0.002MM |
Factory & Work shop & Equipment list:
| Equipments list | Brand | Qty | Working Range (mm) | Precision |
| CNC machines | Huaqun H-1580B | 2 | 1580 | 0.005mm |
| Qiaofeng VMC-1270 | 2 | 1270 | 0.005mm |
| Qiaofeng VMC-850 -4 Axis | 12 | 850 | 0.005mm |
| Joint 850 | 10 | 850 | 0.005mm |
| (Takan) | 4 | 600 | 0.005mm |
| FEELER 5 Axis | 4 | 850 | 0.005mm |
| Milling Machine | Jie yong da | 10 | 760x330 | 0.01mm |
| Milling Machine | Bao Feng | 1 | 760x330 | 0.01mm |
| Lathe | Dalian | 2 | 600 | 0.01mm |
| N/C Turning | Tai Yu | 6 | 500x300 | 0.005mm |
| W/C | Xiongfeng | 6 | 500x300 | 0.005mm |
| W/C(Mid) | Xiongfeng | 1 | 500x300 | 0.005mm |
| Grinding Machine | Wanbang | 4 | 400x200 | 0.002mm |
| Laser Marking machine | | 1 | | |
We work with raw materials.
| Plastic | Metal | Grade |
| ABS | Aluminum Alloy | 2007/ 2017/5052 /6061/6082/6063/7075 ,.etc. |
| PC (Polycarbonate) | Brass&Copper | 3602 / H59 / H62 / C3600/C38500/,.etc. |
| PEEK | Stainless steel | SS 301,SS304,SS316L,SS400,SS430,etc |
| POM | Carbon Steel | A2,Q235,20#,45#.etc |
| PMMA (Acrylic) | Titanium Alloy | |
| PE | Magnesium alloy | |
| PVC | Zinc alloy | |
| Teflon | Tungsten Carbide | YG8,YG10 |
| Other special plastic | Other | Up on Customer’s request |
Fast lead time and safe shipping:
1-2 weeks
Wooden case safe packing, Ship by air or sea.
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