Hansheng Automation (Dongguan) Co., Ltd. is one of the most experienced manufacturers and suppliers of Shot Peening Services for CNC Machined Parts in China. If you're going to wholesale bulk cost-effective Shot Peening Services for CNC Machined Parts made in China, welcome to get pricelist and quotation from our factory. Also, customized service and OEM&ODM service are available.
Integrated CNC Machining and Surface Finishing Solutions
Coordinating between a machining shop and a separate surface finishing vendor can often lead to project delays, logistical complications, and quality control gaps.
At Hansheng, we offer professional shot peening as an in-house secondary operation for our CNC machined parts. By integrating the machining and finishing processes under one roof, we provide our clients with a streamlined workflow, consistent quality standards, and reduced overall lead times.
Why Specify Shot Peening for Your Machined Components?
Shot peening is a cold-working process that bombards the surface of a metal component with small, spherical media (shots). This process induces compressive residual stresses on the surface layers of the material, which significantly enhances the mechanical properties of the part.
Technical Capabilities & Standards
| Engineering Feature | Our Capabilities |
| Primary Specification | SAE AMS2430U (Current Aerospace Standard) |
| Media & Material Specs | Strictly compliant with SAE AMS2431 series (Material Specifications):
|
| Intensity Control | Calibrated Almen Strips (A, N, or C) with standard Almen gages per SAE J442 / J443. |
| Coverage Control | 100% to 200% visual coverage verified under 10x magnification or fluorescent tracer dye (Peenscan) |
| Machining Tolerance | We manage peening-induced material growth (surface expansion) to ensure final critical dimensions remain strictly within print tolerances. Post-peening CMM audits verify compliance (e.g., ±0.005 mm on precision-ground diameters is typically achievable, subject to part rigidity, geometry, and selected peening intensity). |
Feature
Improved Fatigue Life
It helps prevent fatigue failure, making it ideal for critical components subjected to high cyclic loading and stress.
Uniform Matte Appearance
Shot peening masks tool marks left by CNC milling and turning, resulting in a consistent, non-reflective, and professional matte finish.
Stress Corrosion Relief
The compressive stress layer helps prevent micro-cracking and stress corrosion cracking in demanding environments.
Enhanced Coating Adhesion
By texturing the surface, it increases the surface area, creating an excellent base for subsequent coatings like anodizing, plating, or painting.
Common Materials
We regularly apply shot peening to a wide range of CNC machined metals, including:
Aluminum Alloys: 6061-T6, 7075-T6, 5052, etc.
Stainless Steel: 304, 316, 17-4 PH, etc.
Alloy Steel & Carbon Steel
Titanium Alloys: Grade 5 (Ti-6Al-4V), etc.
Copper and Brass Alloys
Application
Our integrated CNC machining and shot peening services support components used in high-performance and demanding industries:
Automotive: Gears, shafts, connecting rods, and high-stress suspension parts.
Aerospace: Structural components, brackets, and engine mounts.
Industrial Machinery: Power transmission parts, heavy-duty fasteners, and tooling.
Consumer Electronics: Matte-finished housings, enclosures, and structural frames.
FAQ
Q: Do you offer shot peening as a standalone service for parts machined by other suppliers?
A: We primarily offer shot peening as an integrated finishing service for parts machined in-house by Hansheng. This ensures we can maintain strict quality control throughout the entire manufacturing process. For high-volume production projects, we may consider standalone finishing; please contact our team to discuss your project details.
Q: What is the typical lead time for CNC parts requiring a shot peening finish?
A: Because we manage both the CNC machining and the shot peening processes in-house, integrating this finish typically adds only 1 to 3 business days to our standard machining lead time, depending on the volume and complexity of the parts.
Q: How do I specify shot peening on my engineering drawings?
A: You can specify the desired shot media (e.g., glass beads), the specific areas of the part that require peening (or "all over"), and any masking requirements for critical features like threaded holes or tight-tolerance dimensions on your 2D PDF drawings.
Q: Which type of parts are suitable for shot peening?
A: Shot peening is suitable for small workpieces with complex shapes. Surface treatment with shot peening has a strong impact force and a remarkable cleaning effect.
Q: What effect does the workpiece achieve after shot peening?
A: After shot peening, surface contaminants are removed without damaging the workpiece, and the surface area is increased. Since the surface of workpiece is not damaged during processing, the excess energy generated during processing will cause surface strengthening of the workpiece substrate.
Q: How does the finish look after shot peening?
A: The surface of workpiece after shot peening has original metallic color. However, due to the spherical surface, part of the light is refracted, so the workpiece is processed to have a matte effect.
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