Questions without a selected answer in Casting, Forming and Joining Processes

In relation to metal casting defects, match the followingDefectDescription$\mathrm{P}$Dross$\mathrm{I}$Shallow blow found on a flat casting surface$\mathrm{Q}$Scab$\mathr...

​The welding process commonly used for fabricating tailor-welded blanks of dissimilar thickness for automotive applications isgas weldinglaser weldingarc weldingfriction ...

A liquid metal is poured in a mold cavity of size $200 \mathrm{~mm} \times 200 \mathrm{~mm} \times 200 \mathrm{~mm}$. The cooling is uniform in all directions with NO add...

​​​​​Match the mold elements in the casting process with the most suitable functionMold elementFunctionPBlind riserICasting with internal cavityQChillIIMolten metal reser...

​​​​​Wire drawing operation is performed on a perfectly plastic metal without any strain hardening. Assuming no friction and no redundant work, the maximum possible perce...

​​​​​In relation to additive manufacturing, match the followingProcessLayer creation techniqueMaterialPStereolithography1Injection of powder streamIPaperQFused deposition...

Two metal parts (a cylinder and a cube) of same volume are cast under identical conditions. The diameter of the cylinder is equal to its height. The ratio of the solidifi...

​​​​The "Earing" phenomenon in metal forming is associated withdeep drawingrollingextrusionforging

​​​​The allowance provided to a pattern for easy withdrawal from a sand mold isfinishing allowanceshrinkage allowancedistortion allowanceshake allowance

​​​​The most suitable electrode material used for joining low alloy steels using Gas Metal Arc Welding $\text{(GMAW)}$ process iscoppercadmiumlow alloy steeltungsten

Aluminium is casted in a cube-shaped mold having dimensions as $20 \mathrm{~mm} \times 20 \mathrm{~mm} \times 20 \mathrm{~mm}$. Another mold of the same mold material is ...

In an arc welding process, the voltage and current are $30 \mathrm{~V}$ and $200 \mathrm{~A}$, respectively. The cross-sectional area of the joint is $20 \mathrm{~mm}^{2}...

In a metal casting process to manufacture parts, both patterns and moulds provide shape by dictating where the material should or should not go. Which of the option(s) gi...

Fluidity of a molten alloy during sand casting depends on its solidification range. The phase diagram of a hypothetical binary alloy of components $A$ and $B$ is shown in...

Consider sand casting of a cube of edge length $a$. A cylindrical riser is placed at the top of the casting. Assume solidification time, $t_{s} \:\alpha\: V/A$, where $V$...

A cast product of a particular material has dimensions $75\: \text{mm} \times 125\: \text{mm} \times 20 \:\text{mm}$. The total solidification time for the cast product i...

A true centrifugal casting operation needs to be performed horizontally to make copper tube sections with outer diameter of $\text{250 mm}$ and inner diameter of $\text{2...

A mould cavity of $1200 \: cm^3$ volume has to be filled through a sprue of $10$ cm length feeding a horizontal runner. Cross-sectional area at the base of the sprue is $...

A welding operation is being performed with voltage $= 30 \: V$ and current =$100 \: A$. The cross-sectional area of the weld bead is $20 \: mm^2$. The work-piece and fil...

A circular hole of $25 \: mm$ diameter and depth of $20 \: mm$ is machined by EDM process. The material removal rate (in $mm^3/min$) is expressed as $$ 4 \times 10^4 \: I...

A steel wire is drawn from an initial diameter $(d_i$) of $10 \: mm$ to a final diameter ($d_f$) of the $7.5 \: mm$. The half cone angle ($\alpha$) of the die is $5^{\cir...

Following data correspond to an orthogonal turning of a $100 \: mm $ diameter rod on a lathe. Rake angle:$+15^{\circ}$; Uncut chip thickness: $0.5 mm$; nominal chip thick...

Taylor's tool life equation is used to estimate the life of a batch of identical HSS twist drills by drilling through holes at constant feed in $20 \: mm$ thick mild stee...

For sand-casting a steel rectangular plate with dimensions $80 \: mm \times 120 \: mm \times 20 \: mm$, a cylindrical riser has to be designed. The height of the riser is...

The preferred option for holding an odd-shaped workpiece in a centre lathe islive and dead centresthree jaw chucklathe dogfour jaw chuck

Feed rate in slab milling operation is equal torotation per minute (rpm)product of rpm and number of teeth in the cutterproduct of rpm, feed per tooth and number of teeth...

Match the following products with the suitable manufacturing process:$\begin{array}{|l|l|l|l|} \hline & \textbf{Product} && \textbf{Manufacturing Process} \\ \hline P. & ...

An orthogonal cutting operation is being carried out in which uncut thickness is $0.010$ mm, cutting speed is $130$ m/min, rake angle is $15^{\circ}$ and width of cut is ...

The percentage scrap in a sheet metal blanking operation of a continuous strip of sheet metal as shown in the figure is _______ (correct to two decimal places)