Custom Abrasive Blast Cleaning Equipment Manufacturers & Companies

While both processes employ pneumatic or mechanical acceleration of media through nozzles, their metallurgical objectives are distinct. Blast cleaning uses sharp, angular media (such as aluminum oxide or crushed chilled iron) to abrade, erode, and clean surfaces, generating a macro-anchor profile ($Ra$) for coating adhesion. Shot peening utilizes spherical, conditioned media (cast steel shot, ceramic microspheres) under strict kinematic control to induce localized plastic deformation and compressive residual stress without removing base material, thereby preventing fatigue crack propagation.

AMS 2430 is the baseline specification governing manual and automated shot peening, focusing primarily on parameter verification via periodic Almen strip testing and coverage inspection. In contrast, AMS 2432 designates computer-monitored peening for critical rotating turbine components. It mandates continuous automated tracking and digital recording of air pressure, media mass flow rate, nozzle positioning, and workpiece rotation. If any variable deviates outside the pre-set tight tolerance band (typically ±5%), the machine must automatically shut down and log a fault record.

Wet shot peening suspends spherical media in a recirculating water slurry. It is preferred when processing ultra-fine parts, thin-walled aerospace airfoils, or medical components where dry blast friction causes thermal expansion or surface contamination. The liquid boundary layer dampens abrasive micro-scratching, producing an exceptionally smooth finish ($Ra < 0.4\ \mu\text{m}$) while still achieving the desired compressive stress profile, completely eliminating airborne combustible dust hazards.

Ferrous contamination on titanium ($Ti\text{-}6Al\text{-}4V$) or nickel-base superalloys (Inconel 718) induces galvanic corrosion and micro-embrittlement during elevated engine operating temperatures. KOSHIN designs dedicated alloy-specific blast cells incorporating non-ferrous interior liners (natural gum rubber, polyurethane, or UHMW-PE), stainless steel internal recovery hoppers, and pneumatic ducting configured with high-purity ceramic or fused silica media systems isolated from carbon steel facilities.

Per SAE J443 standards, an Almen strip (Type 'A', 'N', or 'C') is clamped into a hardened fixture simulating the component's critical geometry and exposed to the shot stream for incrementally increasing durations (e.g., $T, 2T, 4T, 8T$). Arc height deflection is measured using an Almen digital gage. The saturation point ($T$) is mathematically identified as the point on the curve beyond which doubling the exposure time ($2T$) produces an arc height increase of no more than 10%. KOSHIN systems feature software that plots this curve automatically.

Yes. KOSHIN's Peen Forming gantry systems utilize multi-nozzle high-velocity shot peening streams to stretch and plastically deform the outer fibers of monolithic wing skins. By accurately programming nozzle sweep paths, shot size (typically cast steel shot S550 to S780), and pressure intensity, wing skins are accurately formed into complex aerodynamic double-curvatures without the requirement of multi-million-dollar hard metal stamping dies, while simultaneously imparting fatigue-resistant compressive residual stress.