The use of vacuum
packaging machine has a lot of good performance and good packing effect, with the choice of material also has a lot to do, its that believe that it is easy to understand.
But now can choose packaging mechanism for making material sort very much, in order to we more efficient and convenient to choose the suitable
packing machine, let's learn about the equipment of carbon steel or stainless steel to distinguish method.
1, the magnets.
Often do vacuum packing machine in 304 were mostly of austenitic stainless steel material, generally speaking is non-magnetic or weak magnetic.
So, you can use a magnet to test material is 304 stainless steel kitchen utensils and appliances.
Strong magnetic force is carbon steel.
2, look at the label.
If there is a steel seal surface of stainless steel products, of course, can directly identify.
Such as 13 -
0, 18
Eight words, such as horizontal lines before the figures show that the chromium content in the products,
%)
;
Figures show that the nickel content in the products after the horizontal line (
%)
。
Like 13 -
0 means it only contain chromium do not contain nickel, this belongs to the stainless iron;
The 18 -
9 say products containing chromium and nickel, this is the stainless steel.
Packaging machine is done with cr - 18
9 ni stainless steel.
3, used to see.
Bright point is more than 304 material, dim is carbon steel.
4, with the Angle of grinding machine grinding plate, sparking is below 304 material, the more little spark is carbon steel.
5, using special identification reagents.
Pilot a drop of reagent contrast color card, you can know.
304 stainless steel, the droplets in more than 50 seconds only slowly into a light gray.
Fast color change is carbon steel.
6, with the hand.
Look for a corner, with his hands curved, if easy to deformation is more than 304, very hard is carbon steel.
that is carbon steel or stainless steel vacuum packaging machine to distinguish method is introduced.
These two kinds of material is belong to different steel material, carbon steel is the carbon content in 0.
0218% ~ 2.
11% of the iron carbon alloy and stainless steel are ordinary steel, nickel element, make different elements, certainly is not the same in the using effect, thus we need to seriously.
: wp
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