Famous Sandblasting Tools Equipment Factory & Products

Industrial sandblasting is an abrasive surface modification and cleaning operation designed to strip coatings, scale, and rust, establishing an anchor profile (Ra) for adhesion. In contrast, shot peening uses spherical, non-cutting media (cast steel, ceramic microspheres, or conditioned cut wire) to impact the metallic surface at controlled velocities. This creates microscopic plastic deformation dimples, inducing a deep layer of beneficial compressive residual stress that halts fatigue microcrack propagation and extends fatigue life.

Suction systems use compressed air running through a Venturi gun to pull media from an unpressurized hopper. They are suited for light-duty cleaning, delicate deburring, or low-intensity microsphere treatments where media consumption is minimal. Direct pressure systems store abrasive media inside a certified ASME pressure vessel, blasting media at 3 to 4 times higher kinetic energy and velocity. Direct pressure is required for heavy descaling, high production volume lines, and shot peening requiring medium-to-high Almen intensities (0.010A to 0.024A+).

Standard Almen strips (Type 'N', 'A', or 'C') are mounted on fixture blocks matching critical workpiece target locations. Strips are exposed to the shot stream at progressive time increments (e.g., T, 2T, 4T). Arc height deflection is measured with a calibrated Almen gauge per SAE J442. KOSHIN’s integrated HMI software plots arc height versus exposure time, identifying the exact saturation point where doubling exposure results in less than a 10% increase in arc deflection, ensuring full compliance with SAE J443.

All KOSHIN automated blast chambers are built under negative internal pressure with multi-tier sealings to eliminate particulate leakage into factory bays. Exhaust air routes through automatic reverse pulse-jet dust collectors with PTFE filter elements that trap particles down to 0.5 microns, ensuring stack emissions lower than 1.0 mg/Nm³. Soundproofing enclosures keep exterior acoustic noise below 75-80 dBA at 1 meter, fulfilling OSHA, CE Machinery Directive 2006/42/EC, and European ATEX explosive dust safety codes.