Railway Brake Shoes - Metal Pickup

Technical Know-how Based on 30 Years' Experience.

Technical

Railway Brake Shoes -
Metal Pickup

The occurrence of metal inclusion in railway brake blocks is a long standing problem for the operators of freight wagons, locomotives, metro vehicles and passenger trains fitted with a tread braking system.

Such metal inclusions, known as “metal pickup”, could cause:

  • Damage to wheel tread
  • Accelerated wear
  • Change frictional characteristics of brake block
  • Damage to brake block surface

Formulation design is the best and the most effective approach to avoid any metal pickup during the service life of railway brake blocks; where the causes of metal inclusion are addressed at the product development stage.

UIC 541-4 leaflet describes a dynamometer test programme for assessing the tendency of brake blocks to form metallic inclusion.

To be accepted for in-service evaluation, brake blocks should meet the requirements of such dynamometer test programme as part of the approval process.

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