How to recognize the authenticity of molybdenum wire scrap

Waste molybdenum wire because the unit price is relatively high, in the recycling process is more likely to appear fake, adulterated with other substances, in order to prevent deception, master the identification of waste molybdenum wire is very necessary, the following introduction of several ways to identify the authenticity.

1, because the molybdenum wire melting point is high, up to more than 2,500 degrees, pull open by hand (without having to be very tight) with a fire engine combustion, the normal minimum of a dozen seconds to burn off, if 10 seconds to break off basically for the fake. And fakes are generally broken in a moment with sparks.

2, molybdenum wire is not magnetic, with a strong magnet does not absorb magnetism. So use a magnet to suck molybdenum wire, sucked for the fake.

3, the molybdenum wire knotted and tightened, (do not pull off) and then loosened, you will see the molybdenum wire a separate two or more.

4, a ball of molybdenum wire to the gas stove on the burner, a minute or so to take down, the molybdenum wire quickly oxidized into blue.

5, a molybdenum wire, pour some concentrated nitric acid down immediately floating yellow smoke. (Please be careful with this method, because concentrated nitric acid is very corrosive)

6, in the rolled into a ball of waste molybdenum wire, if you feel the weight is too heavy, may be mixed with iron, pick up the molybdenum wire to the ground, if there is a hard object touching the floor of the sound, that is, there may be iron in the middle. Rolled into a ball of molybdenum wire, if the extrusion elasticity is poor, there may be cloth in the middle, etc., should be disassembled for inspection.

7, don't outside on the waste of molybdenum wire with more heavy oil, oil, etc., should be weight discount.