Custom Blast Cleaning Machine Factory & Factories

While both processes utilize high-velocity particles, their functional objectives and quality metrics are distinct:

Shot Blasting: Primarily an aggressive surface preparation, descaling, or profiling method designed to remove scale, oxidation, and contaminants to achieve a specific surface anchor profile (e.g., ISO 8501-1 Sa 2.5 or Sa 3) for subsequent paint adhesion or thermal spray bonding. Its primary verification metric is visual cleanliness and surface roughness (Ra/Rz).

Shot Peening: A precision cold-working metallurgical process using spherical conditioned media (steel shot, ceramic beads, or glass beads) to deliberately impart a residual compressive stress layer into the metal's near-surface microstructure. This compressive stress counteracts cyclic tensile loads, delaying fatigue micro-crack initiation and preventing stress corrosion cracking (SCC). Shot peening is strictly controlled and verified via Almen intensity strips (SAE J442) and optical saturation curves (SAE J443), not by visual cleanliness.

AMS 2432 is the aerospace industry’s most rigorous specification for computer-monitored shot peening. Our custom equipment integrates automated closed-loop electronic controls that continuously sample all critical process variables: compressed air pressure (±1 psi), media mass flow rate (±5%), nozzle movement speed and standoff distance via servo-driven multi-axis robots, and part rotational velocity. If any process parameter strays outside pre-programmed tolerance bands for more than 0.5 seconds, the system automatically stops shot flow, alerts the operator, logs the exact deviation fault code, and preserves part integrity for audited quality review.

To deliver an optimized, factory-accurate engineering proposal, our technical team evaluates:

• Workpiece Specifications: Maximum dimensions (L × W × H), net weight, base metallurgy, heat treatment state, and 3D CAD step files.
• Target Surface Requirements: Governing standards (e.g., AMS 2430, Nadcap AC7117, ISO 8501-1), required Almen intensity range (e.g., 0.008A – 0.012A), coverage percentages (100% or 200%), and allowable surface roughness (Ra).
• Media Selection: Cast steel shot (S110 to S780), cut wire (conditioned CW14 to CW41), ceramic microspheres (B20 to B120), or aluminum oxide grit.
• Production Throughput: Parts per hour or per shift, batch vs. continuous inline conveyor integration, and degree of automation (manual handling vs. robotic loading).
• Plant Infrastructure: Available factory footprint, ceiling hook height, compressed air capacity (CFM/bar), power voltage (e.g., 400V 50Hz / 480V 60Hz), and environmental dust limits.

Yes. KOSHIN maintains dedicated laboratory testing centers equipped with multi-axis robotic shot peening cells, wet slurry machines, and Almen strip calibration stands. We accept customer prototype parts or coupon test specimens to experimentally determine saturation curves, verify exposure times, validate masking geometries, and perform X-ray diffraction (XRD) residual stress depth profiling. Once the recipe is locked and verified, these exact software parameters are pre-loaded into your custom production machine prior to Factory Acceptance Testing (FAT).

High-wear zones inside our blast cabinets are lined with interlocking, bolt-free high-manganese alloy (Mn13 / Hadfield steel) or hot-vulcanized 60-durometer natural rubber sheets that absorb kinetic impact without spalling. Our blast nozzles feature ultra-hard sintered boron carbide or composite silicon nitride liners with specialized polyurethane outer jackets to protect against drop damage. Our abrasive reclaim towers employ a three-tier classification architecture: heavy trash scalping screens, dynamic zig-zag air wash cascades to evacuate fine broken dust, and dual-layer rotary vibrating screens to ensure consistent particle size distribution.

Standard automated blast cabinets typically require 8 to 12 weeks of fabrication, while complex multi-robot shot peening or peen forming gantries require 16 to 24 weeks. Every system undergoes a formal Factory Acceptance Test (FAT) at our production base with customer representatives present, running dry cycles, full-power blast tests, and Almen repeatability verifications. Upon sign-off, machines are modularized, vacuum-sealed with anti-corrosion VCI desiccant wrap, packed into export-grade steel-reinforced wooden crates, and shipped via ocean container (Open Top or Flat Rack) to global destinations.