Pakistan Railway Repair Rock Drilling Machine Explanation Video

How did Pakistani machinists make flour mill rollers?

It is an amazing study in how the Pakistani machinists, foundrymen, and forge shop blacksmiths work to produce flour mill rollers. The youtube begins with a neighborhood foundry. This foundry uses torpedo shaped melting furnaces, fired on waste engine oil. The torpedo furnaces turn slowly when firing.

Where do Pakistani machine shops dump swarf?

The great piles of swarf (chips or turnings) in the Pakistani machine shops do not wind up dumped somewhere. Instead, those piles of swarf are taken a short distance to the nearest iron or steel foundry and charged into the furnaces.

How are threshing machines made in Pakistan?

These are PTO driven small threshing machines. The local shop builds them using plate brakes, shears, oxyacetylene cutting torches and stick welding. The Pakistanis have moved up from the locally built 'buzz box' welders to inverter power supplies.

Are Pakistanis real machinists?

If those guys had to grind a form tool, or work on an old lathe or mill with plenty of wear and backlash, they'd be sunk. The Pakistanis are real machinists. I 'came up' under German immigrant machinists who'd come to the US in 1923 or thereabouts.

How do Pakistani foundries use scrap iron & limestone & coke?

In some youtubes of Pakistani foundries, the scrap iron and limestone and coke are charged into the cupolas by laborers. These laborers place a beat-up steel basin on top of their head filled with whatever is to be charged into the cupola. Up a rickety ladder or perhaps a concrete stair with no handrail they go, and dump the charge into the cupola.

Do Pakistanis use water dripping on milling cutter as coolant?

It looks like the Pakistanis use water dripping on the milling cutter as coolant. No guard or shroud on the milling head motor's cooling fan, and wiring looking like it could give someone a nasty shock, and water dripping for coolant.