CHARACTERIZATION OF TRAIN BRAKE-BLOCKS COMPOSITE REINFORCED WITH ALUMINUM-DROSS

Authors

  • EO Obidiegwu MATERIALS DEVELOPMENT AND PROCESSING RESEARCH GROUP (MADEPREG), DEPARTMENT OF METALLURGICAL AND MATERIALS ENGINEERING, UNIVERSITY OF LAGOS, AKOKA, LAGOS STATE, NIGERIA
  • HE Mgbemere MATERIALS DEVELOPMENT AND PROCESSING RESEARCH GROUP (MADEPREG), DEPARTMENT OF METALLURGICAL AND MATERIALS ENGINEERING, UNIVERSITY OF LAGOS, AKOKA, LAGOS STATE, NIGERIA
  • EF Ochulor MATERIALS DEVELOPMENT AND PROCESSING RESEARCH GROUP (MADEPREG), DEPARTMENT OF METALLURGICAL AND MATERIALS ENGINEERING, UNIVERSITY OF LAGOS, AKOKA, LAGOS STATE, NIGERIA
  • PA Ajayi MATERIALS DEVELOPMENT AND PROCESSING RESEARCH GROUP (MADEPREG), DEPARTMENT OF METALLURGICAL AND MATERIALS ENGINEERING, UNIVERSITY OF LAGOS, AKOKA, LAGOS STATE, NIGERIA

Keywords:

Train, Brake blocks, Clay composite, Aluminum Dross, Mechanical properties.

Abstract

Brake blocks are usually made from asbestos, metals and ceramics. It has been realised that asbestos discharges dangerous gases which can be harmful. This problem necessitated the search for human-friendly materials. Therefore, this paper studies the production and characterization of train brake blocks produced from clay reinforced with aluminum dross. This was done by producing samples of composite using clay from a deposit at Osiele and aluminum dross from Tower Rolling Mill Otta, both in Ogun state. The percentage composition of aluminum dross was varied from 0% to 25% to produce brake samples. Their wear rate, tensile strength, compressive strength, hardness, thermal conductivity and microstructure were analysed. The results from this project such as Ultimate tensile strength (UTS) of 7.4Mpa, Impact energy 6.92J, Hardness 28.8 HV, wear rate 0.0071g/sec and thermal conductivity of 0.01075 indicate that, with 5% aluminium dross it is possible to develop brake block that exhibits property recommended by Rail Industry Safety and Standard Board (RISSB).

 

http://dx.doi.org/10.4314/njt.v39i4.20

Published

2020-09-30

Issue

Section

Chemical, Industrial, Materials, Mechanical, Metallurgical, Petroleum & Production Engineering