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Billet Pierce

Norris manufactures its cylinders using the Hot Billet Pierce method of manufacturing.

Porous Mass Patent Step 1

Step 1

Steel Billets of Chromium Molybdenum Steel are cut into Mults.

   
Porous Mass Patent Step 2

Step 2

Mults are preheated in an induction heater until near molten state.

   
Porous Mass Patent Step 3

Step 3

A Robotic arm places the mult into a piercing press.

   
Porous Mass Patent Step 4

Step 4

The "mult" is then pierced.

   
Porous Mass Patent Step 5

Step 5

The pierced mult is pushed through a series of roller dies creating a cylinder with a smooth uniform wall.