Question

A mould has a downsprue whose length is 20 cm and the cross sectional area at the base of the down sprue is 1 cm2. The down sprue feeds a horizontal runner leading into the mould cavity of volume 1000cm3 . The time required to fill the mould cavity will be

Answer 1

Step-by-step explanation:

accln due to gravity = 1000 cm/sec^2

velocity of liquid metal =

√(2*1000*20) = 200 cm/sec

time to fill the mould =

volume of mould/(gate area*velocity)

= 1000/(1*200) = 5 sec

Answer 2

The time required to fill the mould cavity = 5.04 sec.

Given:

A mould has a down sprue whose length is 20 cm and the cross sectional area at the base of the down sprue is 1 cm².

The down sprue feeds a horizontal runner leading into the mould cavity of volume 1000cm³.

To find:

The time required to fill the mould cavity will be.

Explanation:

The time required to fill the mould cavity = $\frac{Volume \ of \ mould }{Area \times velocity }$

Velocity of sprue = $\sqrt{2gh}$

h = length of down sprue = 20 cm

g = 981 cm/s²

Velocity of sprue = $\sqrt{2gh}$

                            =  $\sqrt{2\times 981 \times 20}$

                            = `198.09 cm/s

Cross sectional area sprue = 1 cm².

mould cavity of volume 1000 cm³

The time required to fill the mould cavity = $\frac{Volume \ of \ mould }{Area \times velocity }$

The time required to fill the mould cavity = $\frac{1000 }{1\times 198.02 }$ = 5.04 sec.

To learn more...

1)In a 90 kg weighting non ferrous casting containing cu, Tin & zn in the ratio of 6:3:1 . find the weight of copper

https://brainly.in/question/2778392

2)Metal casting is a modern process. In this process, metal shapes are formed by pouring liquid metal into a mould

where it is cooled and extracted later from the mould. A solid metallic sphere of radius 8 cm is melted and recast

into eight equal solid spherical balls. Determine the diameter of the balls.​

https://brainly.in/question/14078631