Arc strikes-metallurgical defects, Mechanical Engineering

Assignment Help:

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.


Related Discussions:- Arc strikes-metallurgical defects

Pulsed dc welding, Pulsed DC Welding Pulsed DC involves the repetitive ...

Pulsed DC Welding Pulsed DC involves the repetitive variation in arc current from a background (low) value to a peak value. Adjustments of the pulse current time, background cu

Molding process, why compression molding process is impractable for thermop...

why compression molding process is impractable for thermoplastics?

Calculate stress to cause failure - creep parameters, Calculate stress to c...

Calculate stress to cause failure - Creep Parameters: From creep tests on 713 C alloy the constant C in Larson-Miller parameter is determined as - 85.75. In rupture test a spe

Corollaries of first law of thermodynamics, example of 2nd corollary of fir...

example of 2nd corollary of first law of thermodynamics

Types of buildings required for plant, Q. Types of buildings required for P...

Q. Types of buildings required for Plant? The following types of buildings may be required: • Control rooms / Motor Control Centers (MCC) / Equipment rooms. • Electrica

Dynamic analysis., dynamic analysis of four bar linkage by kelin''s constru...

dynamic analysis of four bar linkage by kelin''s construction.

Calculate the vertical anchoring forces, A converging elbow (see Figure 4) ...

A converging elbow (see Figure 4) turns water through an angle of 135 o in a vertical plane. The flow cross-section diameter is 400 mm at the elbow inlet, section (1), and 200 mm

Explain the meaning of a raft foundation, Explain the meaning of A raft fou...

Explain the meaning of A raft foundation A raft foundation, as also combined footing, cannot be considered to be the opposite of a slab supported on the columns with a defined

How much Torque required, hi how much torque required to move 100kg in a sk...

hi how much torque required to move 100kg in a skate board with a wheel diameter of 1.8 inch

Determine the maximum bending moment, Design the bending moment and shear f...

Design the bending moment and shear force diagram for a simply supported beam of length 9 m and carrying a Uniformly distributed load of 10 KN /m for a distance of 6 m from the lef

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd