Mainly used for ***elting iron vanadium alloy steel. As in spring steel, bearing steel and cast iron are widely used, ferrovanadium containing vanadium more than 50% of the amount, electric furnace in the refining. Of the various compounds vanadium is widely used in the chemical industry as catalyst agent.
Containing vanadium are widely used in ***iation industry of structural steel, and railway transportation tractor industry, also used in the manufacture of vanadium steel wind and spring. In high quality tool steel containing vanadium can reach 2%. Due to the existence of vanadium improved steel cutting pe***nce and guarantee high temperature stability of the organization.
Vanadium so so widely used in steel industry, is because the carbon steel with vanadium can generate stable carbon, it can be refined steel organization and grain, improve the temperature of the grain coarsening. Therefore, steel to add a ***all amount of vanadium can significantly improve the pe***nce of the steel, greatly improving the steel strength, toughness, wear-resisting, bear ability and ability of the impact load resistance to corrosion ability, etc.
China vanadium iron technical conditions, the national standard (GB 4139-87) for the rules.
With massive supply vanadium iron; Most large he***y must not exceed 8 kg, through the 10 mm * 10 mm screen hole pieces, shall not exceed the total weight of 3%.
Vanadium and chemical composition of iron grades
Vanadium iron impurity content and vanadium according to different, divided into six brand, its chemical composition should comply with the provisions of the table.

brand

Chemical composition%

V

C

Si

P

S

Al

Mn

No less than the

Not more than

FeV 40-A

40.0

0.75

2.0

0.10

0.06

1.0

FeV 40-B

40.0

1.00

3.0

0.20

0.10

1.5

FeV 50-A

50.0

0.40

2.0

0.07

0.04

0.5

0.50

FeV 50-B

50.0

0.75

2.5

0.10

0.05

0.8

0.50

FeV 75-A

75.0

0.20

1.0

0.05

0.04

2.0

0.50

FeV 75-B

75.0

0.30

2.0

0.10

0.05

3.0

0.50