Thermit welding, Mechanical Engineering

Thermit Welding

This process utilises the intense heat developed during the reaction between iron oxide and aluminium. When a mixture of three parts of iron oxide and one part of  aluminium by weight is locally burnt with a special ignition powder a vigorous reaction takes place which proceeds rapidly through the mass, resulting in the formation of aluminium oxide and iron and a considerable amount of heat. The heat is sufficient  to melt iron and oxide slag. In carrying out thermit welding the thermit mixture is placed in a refractory crucible above the pieces to be welded. The molten metal from reaction is guided to the joint to be welded by a sand mould, which is fastened around the work. By virtue of its superheat, the thermit metal melts a portion of base metal with which it comes in contact. This process is ideal for welding rails of railway tracks.

Posted Date: 9/13/2012 8:12:40 AM | Location : United States

Related Discussions:- Thermit welding, Assignment Help, Ask Question on Thermit welding, Get Answer, Expert's Help, Thermit welding Discussions

Write discussion on Thermit welding
Your posts are moderated
Related Questions
please help me to calculate the diameter of a brake drum for using in a "brake drum dynamometer engine test rig" the engine specs are as follows: - 6Hp single cylinder 4stroke engi

Problem - Newton's Second Law in 2D A tow truck tows a 1000-kg car by applying a force of 1000 N north-northeast (67.5° above the x-axis).  a)  What are the components of th

A large hydraulic cylinder is to be treated using autofrettage, taking 80% of the wall thickness into the plastic range. The external diameter of the vessel is 200mm and the inter

A chemical works produces an aqueous effluent at above ambient temperature. The Environmental Agency insists that before the effluent is discharged to the river, it must be cooled.

Q. Supply Fan - air-conditioning guidelines? Recheck final air quantities and static pressure. Indicate location of motor and belt guard. For fans located in plenums ensure ade

Q:  The12m boom AB weight 1 KN, the distance of center of gravity G is 6 m from point A.  For the position given, determine the tension T in cable and reaction at B.

Information phase of screw conveyor with auger: Steps: To secure all and complete information and gather facts and from best sources.Our project is selected based on the cu

Method:- Using the constant velocity joint attaching to spindle. U-joint is a joint used to attach two non parallel non intersecting shafts, and it can transfer power at angle

Q. What is IFC in project management? This revision is to be used as a basis for preparing detailed design for final checking of IFC drawings by other disciplines, for incorpo