Industries
Railway Industry
Engineered abrasives for fatigue-critical bogie and axle peening, rail and track cleaning, wagon refurbishment, and brake component descaling — supporting EN 15085 weld quality and certified service-life requirements.
Industry Overview
Surface preparation for safe, long-life rolling stock
Rail vehicles operate under relentless dynamic loading, and their running gear must survive decades of service across millions of stress cycles. Surface preparation and shot peening are central to achieving the fatigue performance and weld integrity demanded by modern rail safety regulation.
Welded bogie frames fall under EN 15085, where consistent surface cleanliness underpins sound, inspectable welds. Axles and suspension components benefit from controlled peening that introduces compressive residual stress at fatigue-prone fillets and transitions, raising the endurance limit of the part. Macloid Metalix supplies certified shot, grit, and cut wire with hardness, chemistry, and sieve analysis on every batch.
Weld Standard
EN 15085
Peening Coverage
≥98%
Cleanliness
Sa 2.5
Batch Certification
Every Lot
Recommended Products
Abrasives selected for railway
Steel Shot
Steel Grit
Cut Wire Shot
Applications
Key uses in this industry
Bogie & Axle Shot Peening
Bogie frames, axles, and suspension components endure millions of stress cycles under dynamic rail loading. Controlled shot peening induces a compressive residual stress layer that arrests fatigue crack initiation at welds and machined transitions, directly extending the certified service life of rolling stock running gear.
- ✓Induces compressive residual stress to inhibit fatigue cracking
- ✓Controlled Almen intensity per SAE J443 saturation curves
- ✓Targets welded bogie frame transitions and axle fillets
- ✓Coverage verification to 98% minimum on critical zones
Recommended media
Steel Shot S390 or Cut Wire Shot CW28
Rail Surface Treatment
Rail sections, switch components, and check rails arrive with mill scale, rust, and weld spatter that must be removed before inspection, hardfacing, or protective coating. Steel grit blasting produces a clean, angular anchor profile that ensures reliable ultrasonic inspection results and sound metallurgical bonding for weld repairs.
- ✓Removes mill scale, rust, and oxidation from rail surfaces
- ✓Creates angular anchor profile for coating adhesion
- ✓Prepares rail ends for flash-butt and thermite welding
- ✓Achieves Sa 2.5 cleanliness per ISO 8501-1
Recommended media
Steel Grit G25
Wagon & Coach Refurbishment
Freight wagons and passenger coach shells require complete paint and corrosion removal during periodic overhaul. Steel shot and grit blasting strips multiple legacy paint layers, scale, and rust from large structural surfaces in a single pass, restoring sound steel for re-coating and life extension.
- ✓Strips legacy paint, primer, and corrosion in one operation
- ✓Cleans underframe, solebar, and headstock structures
- ✓Recyclable media reduces overhaul cost per wagon
- ✓Uniform profile across large welded body panels
Recommended media
Steel Shot S230 / Steel Grit G25
Compliance
Standards & certifications
Railway Applications — Welding of Rail Vehicles and Components. Governs weld quality and inspection of bogie and body structures; surface preparation directly supports weld integrity and fatigue performance.
Railway Applications — Wheelsets and Bogies / Axles. Defines fatigue and quality requirements for axles where shot peening of fillets enhances fatigue resistance.
Procedures for Using Standard Shot Peening Test Strip — defines Almen strip types and the saturation curve methodology used to validate bogie and axle peening.
Steel Shot — defines chemical composition, hardness, microstructure, density, and sieve analysis requirements for cast steel shot.
Steel Grit — specifies hardness grades, sieve distribution, and physical properties for cast steel grit used in rail descaling and profiling.
Surface Preparation Standards — defines cleanliness grades Sa 1 through Sa 3 for blast-cleaned steel surfaces before coating of wagons and coaches.
Ready to upgrade your rolling stock process?
Our technical team can recommend the correct abrasive grade, hardness, and size for your bogie, axle, rail, or brake application — with full documentation to support EN 15085 and your quality system.
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