What is the difference between shot peening and shot blasting?

Shot blasting and sand blasting remove material such as scale, rust or old coatings and create a surface profile. Shot peening is a cold-working process that uses controlled media impacts to induce a layer of compressive residual stress, which slows crack initiation and extends fatigue life. Peening is verified by Almen intensity and coverage, not by visual cleanliness.

Which specifications can KOSHIN shot peening machines be configured for?

KOSHIN systems are configured around the customer's governing specification, typically aerospace standards such as AMS 2430 or AMS 2432 for computer-monitored peening, with Almen intensity verified per SAE J442 and J443 and media controlled to the applicable media specification. Monitoring and data records are designed to support Nadcap-audited processes.

Can KOSHIN run trials on our parts before we purchase a machine?

Yes. KOSHIN operates in-house machines for experiment services, including Almen saturation curves, coverage studies and process development on customer samples. Validated parameters are then transferred into the production machine recipe, and contract processing is available for production batches.

What information is needed to prepare a machine proposal?

Provide workpiece dimensions and material, peening area, intensity and coverage requirements, media type and size, required production rate, available floor space and height, and any HS&E, Nadcap, emissions, noise or energy-efficiency requirements.

Does KOSHIN support overseas installation and after-sales service?

KOSHIN supports customers in more than 50 countries and regions with installation, commissioning, operator training, spare parts and lifecycle upgrades, coordinated from its Singapore engineering center.

OEM KOSHIN Wet Shot Peening Machine for Precision Metal Parts Factory, Product

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OEM KOSHIN Wet Shot Peening Machine for Precision Metal Parts Factory, Product

• Wet (slurry) shot peening — abrasive suspended in liquid for a cleaner, finer, contamination-free finish.

• No airborne dust; gentle on thin and delicate parts; consistent coverage from a recipe-driven cycle.

• Ideal where dry peening is too aggressive or where surface cleanliness matters.

The KOSHIN Wet Shot Peening Machine peens parts using a controlled slurry of fine media and water instead of a dry air-blast. The liquid carrier cushions the impact, so the process imparts compressive residual stress and a uniform satin finish without the dust, embedding, or edge damage typical of dry peening. It suits thin-wall, precision, and finish-sensitive parts, and leaves the surface clean — ready for inspection, plating, or assembly.

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Product Description

Frequently Asked Questions

Q: What are the key advantages of dual-robot shot peening for blisks?

Dual-robot systems allow simultaneous and coordinated surface treatment from multiple angles, ensuring uniform residual compressive stress distribution across complex geometries like integrally bladed rotors (blisks) while cutting processing cycle time in half.

Q: What applications benefit most from microsphere peening technology?

Microsphere peening utilizes ultra-fine spherical media ideal for high-precision components requiring improved fatigue life and wear resistance without compromising strict surface roughness tolerances, widely used in precision gears, medical implants, and micro-mechanical assemblies.

Q: How does robotic shot peening ensure aerospace compliance?

Robotic systems utilize multi-axis CNC or articulated robotic controls combined with closed-loop process monitoring for shot flow rate, air pressure, and nozzle angle. This eliminates manual inconsistency and complies strictly with AMS 2430 and AMS 2432 aerospace standards.

Q: Can these automated peening systems handle mixed parts production?

Yes, programmable multi-axis robotic shot peening machines support stored recipes and quick-change tooling fixtures, allowing smooth transitions between aerospace turbine components and automotive transmission parts with minimal retooling downtime.

Q: How is media classification and recovery handled in KOSHIN peening systems?

The systems integrate automatic continuous classification units, including cyclonic separators, vibratory screen sieves, and spiral shape separators, ensuring only correctly sized, intact spherical media is recirculated for consistent peening intensity.