Basic principles of wear protection technology for bulk materials (Part 2)

Summary: In many industries the wear caused by handling bulk materials is a factor that limits the availability of plants and thus considerably increases operating and production costs. The following article aims to provide plant operators affected by this problem with a sound basis for assessing, classifying and solving their problems in relation to wear. After a brief overview of the relationships relating to contact and fracture mechanics there is a systematic analysis of the basic interdependencies that affect the wear process and the extent of wear. Part 2 presents corresponding mathematical methods and models. The report concludes with a practical example highlighting the systemic nature of the problem of wear.

4 Calculation approaches/models

The research published in 1995 [18] identified 182 equations for describing different types of wear. 28 of these equations deal exclusively with wear by particle erosion and impact. They are analysed in detail in [18]. One of the latest reports on the subject of blast wear [19] appeared in 11/2008. These equations are based either on theoretical models or on descriptive formulae based on measurements. In each case they only apply to limited areas of application and/or idealized material behaviour and have to be adapted to suit the real situation through...

Related articles:

Issue 2009-03 Companies & Products

The right approach to wear protection

The new Barmac range relies on uniform attrition of the impact elements and free configuration of the rotor as an aid to utilization and to lower operating costs. In the introduction to the new model...

more
Issue 2009-10

Patented wear protection for improved cost efficiency

Conveying wear-intensive bulk solids is an issue in many industry sectors. Particles are conveyed much faster in dilute phase conveying. Here lower quantities of bulk solids are conveyed with a high...

more
Issue 2011-06

Dense phase pneumatic conveying of abrasive materials

Gericke now offers an improved cone valve (type K5 and K6) which is especially suitable for applications with abrasive materials, high pressures and high temperatures (Fig.). The valve shows excellent...

more
Issue 2009-10

Basic principles of wear protection technology for bulk materials (Part 1)

1 Introduction The working life or availability of plant and machinery used for transporting or handling bulk materials is often determined by the wear of the wall surfaces that are in temporary or...

more
Issue 2014-03

Huge savings for the cement industry

In Germany alone wear annually causes damage amounting to billions of Euros. Process fans in the cement and non-metallic mineral processing industries are exposed to extremely tough conditions and,...

more