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FAQ – Food Processing

In food processing equipment, one of our biggest concerns is bacterial accumulation in any internal cavities and passages.  Does Extrude actually remove material when polishing metal?

Yes, it does.  How much material removal depends on burr conditions, the roughness of the surface at start.

Here is an illustration of how Extrude Hone can substantially reduce or eliminate the possibility of contamination of food product:


How do you control the amount of material removed?

Primary variables are the tooling, the media flow pressure, the viscosity and abrasive concentration of the media.

The tooling is a holding fixture that directs media flow to the target area of the part, while protecting areas where abrasion is not desired.  Media flow pressure available has a range of 200 to 2000 psi.

The media carrier, silicon rubber, comes in three basic viscosities:  high, medium and low; while the silicon carbide abrasive ranges in size from the fineness of baby powder to the coarseness of buckshot.

All these taken together are manipulated to produce the desired result on the workpiece.  For this reason, each and every application destined for Extrude Hone AFM has to be engineered and developed.

What dimensional tolerances can Extrude Hone hold?

We can hold tolerances within 1 – ten-thousandths of an inch (.00001).  A human hair is approximately three to four thousandths of an inch in diameter (.003-.004).  That is some 30 to 40 graduations of the tolerances we can hold.

Do you actually remove material when polishing metal?

Yes, we do.  How much material removal depends on the roughness of the surface at start.  An average machined finish would require removal of approximately .0015 inch of material.

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