Arc strikes-metallurgical defects, Mechanical Engineering

Arc strikes

Represent any localised heat affected zone caused by an arc. Arc strike tends to produce hardening particularly in high carbon steels and alloy steels. Grinding of cross section of such arc strike points show without exception, the occurrence of untempered martensite with a very high hardness and often cracks are present. At sudden st resses, at low temperature, these places can easily serve as initiation point for brittle fracture. By giving proper instructions to a welder and by good house keeping this can be avoided. By dressing up the area, the ill effects are removed.

Posted Date: 9/18/2012 12:45:53 AM | Location : United States







Related Discussions:- Arc strikes-metallurgical defects, Assignment Help, Ask Question on Arc strikes-metallurgical defects, Get Answer, Expert's Help, Arc strikes-metallurgical defects Discussions

Write discussion on Arc strikes-metallurgical defects
Your posts are moderated
Related Questions
advantages and disadvantages of locomotive boiler

A multiple disc clutch, steel on bronze, is to transmit 4.5 kW at 750 r.p.m. The inner radius of contact is 40mm and outer radius of the contact is 70 mm. The clutch operates in oi

A Composite from Multidirectional Laminates                                              Figure: A Composite from Multidirectional Laminates Glass fibres usually u

Working of Engine Lubrication System: The oil flows from oil pump into the distribution chamber, where it is divided into two parts. One part enters into the right crankcase cove

WELDING VARIABLES The following major process variable play an important role in shaping the weld bead and the resultant weld metal in submerged arc welding: a. Welding cu

Find increase in the length of bar: Q: Find increase in the length of bar of uniform section because of self weight. Sol.: Take a bar of cross sectional area A and leng

Combined Rules           MOD (modified operation due date)                                 PN j = max (t + o j , t dj ) (SPT-Tr) (Truncated SPT)

Define Advantage and Disadvantage of Electron Beam Machining Advantage  1. Suitable for automatic machining. 2. Absence of mechanical contact between work piece and too

Problem:   The following machine component is loaded as shown.  It is fabricated from Al 6061-T6.   Determine the analytical solution to this problem and compare result

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4