Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
WELD DEFECTSThe common defects encountered in submerged arc welding are:
a). Slag Inclusion: Slag inclusion is the result of incomplete dislodging of each layer during multiphase welding. Using Proper cleaning of each pass, the defect can be avoided. Improper wire positioning creates under cuts resulting in slag inclusion in those areas.b). Porosity: Porosity in submerged arc welding occurs mainly due to the presence of contaminants in the metal surface or electrode and due to moisture pick up by the flux. In addition, the gases generated during welding may get entrapped in weld due to improper selection of process parameters such as excessive current, too high welding speed or excessive height of flux layer.c). Cracking: The main factor in promoting cracking in the weldment is the chemical composition of the steel itself. If the steel is hardemable, cracking can be avoided by proper selection of preheat and by controlling the hydrogen level during welding. Cracking may also occur due to susceptibility of the material to hot shortness.This defect is mainly associated with the sulphur content in the weld and can be controlled by the adjustment of manganese content in the flux. The other major cause of cracking could be due to the external restraints forced on to the joint during cooling. In general, the weld metal cracking can be avoided by proper selection of current, voltage and travel speed to yield a weld deposit with a bead formation factor, that is bead width to depth ratio around 3:2.
The Supplier/Subcontractor shall submit, for acceptance, their Material Traceability and PMI program and procedures, which shall comply with this specification, prior to the sourci
The Radius Dimension Command The Radius command is quite identical to the Diameter command except that the dimension measurements a radius rather than a dimension and the resul
Drill Bit: This is a drilling tool used in drilling machines. The application of this tool is to make holes. Figure shows drill bit. Figure: Drill Bit
(i) Formulate the equation of motion for the system shown in Figure. List TWO (2) assumptions made in this formulation. (ii) Find the response of this system at t = 3s. The syst
Control of the guide vanes shall be by means of an external linkage connected to the internal control ring Steam Generator piping. Inlet guide vanes shall be furnished with the
A hollow mild steel tube 6 m long 4 cm internal diameter and 6 mm thick is used as a strut with both ends hinged. Determine the crippling load and safe load taking factor of safety
how to fraw a parabolla in parallelogram
(a) Evaluate the buckling load of column with one end fixed other free of 8m length by using Euler's formula. Given : I min = 1390m 4 E = 2 X 10 5 N/mm 2 (b) Derive a
what is hoop stress
Cell Control And Modeling Various numbers of modeling systems and cell control have been developed to date. Researchers have worked many on three broad regions: scheduling;
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd