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Silicon nitride vanadium alloy and production method thereof

A technology of silicon nitride vanadium alloy and production method, applied in the field of iron and steel microalloying technology and materials, can solve the problems of poor microalloying effect, unstable yield, easy powdering of products and the like

Inactive Publication Date: 2015-06-17
LIAONING XINYE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The resulting product is easy to pulverize, and the density is relatively low, and the yield is unstable
[0009] In addition, a silicon-vanadium nitride alloy is also disclosed in the prior art, which contains 52-55wt% vanadium, 13-15wt% nitrogen, 6-10wt% silicon, and the balance is iron and unavoidable impurities. And the mass ratio of vanadium to nitrogen is 3.6-4.5, when it is applied to the production of HRB500E steel bars, the microalloying effect is poor

Method used

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  • Silicon nitride vanadium alloy and production method thereof

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Embodiment 1

[0019] The silicon-vanadium nitride alloy described in this embodiment contains 45.2wt% vanadium, 16.3wt% nitrogen, 3.5wt% chromium, 2.7wt% silicon, 0.68wt% manganese, 1.12wt% carbon, The balance of iron and unavoidable impurities has a density of 4.53g / cm 2 . The preparation method of the silicon nitride vanadium alloy is as follows: it uses 100 mesh vanadium powder, chromium powder, silicon powder, manganese powder, iron powder and graphite powder as raw materials, and the above raw materials are prepared according to vanadium: chromium: silicon: manganese: carbon: Iron = 54: 4.18: 3.23: 0.81: 1.34: 36.44 mass ratio for batching, and use a high-speed mixer to mix the materials under a nitrogen protective atmosphere; then put the uniformly mixed raw materials into a high-temperature self-propagating reactor. is 18.0Kg, the high temperature self-propagating reactor is evacuated to 10 -2 ~10 -3 Pa, rush into high-purity nitrogen, ignite when the air pressure reaches 10MPa, k...

Embodiment 2

[0021] The silicon-vanadium nitride alloy described in this embodiment contains 47.8wt% vanadium, 17.2wt% nitrogen, 3.4wt% chromium, 2.5wt% silicon, 0.72wt% manganese, 1.08wt% carbon, The balance of iron and unavoidable impurities has a density of 4.58g / cm 2 . The preparation method of the silicon nitride vanadium alloy is as follows: it uses 100 mesh vanadium powder, chromium powder, silicon powder, manganese powder, iron powder and graphite powder as raw materials, and the above raw materials are prepared according to vanadium: chromium: silicon: manganese: carbon: Iron = 57.7: 4.11: 3.02: 0.87: 1.30: 33.0 mass ratio for batching, and use a high-speed mixer to mix the materials under a nitrogen protective atmosphere; then put the uniformly mixed raw materials into a high-temperature self-propagating reactor. is 18.0Kg, the high temperature self-propagating reactor is evacuated to 10 -2 ~10 -3 Pa, rush into high-purity nitrogen, ignite when the air pressure reaches 10MPa, ...

Embodiment 3

[0023] The silicon-vanadium nitride alloy described in this embodiment contains 47.8wt% vanadium, 17.8wt% nitrogen, 3.4wt% chromium, 2.5wt% silicon, 0.72wt% manganese, 1.08wt% carbon, 0.006wt% oxygen, the balance iron and unavoidable impurities, its density is 4.55g / cm 2 . The preparation method of the silicon nitride vanadium alloy is as follows: it uses 100 mesh vanadium powder, chromium powder, silicon powder, manganese powder, iron powder and hydroxyethyliminodiacetic acid as raw materials, and the above raw materials are prepared according to the formula of vanadium: chromium: silicon : Manganese: Carbon: Iron = 57.7: 4.11: 3.02: 0.87: 3.23: 33.0 mass ratio for batching, and use a high-speed mixer to mix the materials under a nitrogen protective atmosphere; then put the uniformly mixed raw materials into a high-temperature self-propagating reactor , the charging amount is 18.0Kg, and the high-temperature self-propagating reactor is evacuated to 10 -2 ~10 -3 Pa, rush in...

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Abstract

The invention relates to silicon nitride vanadium alloy which comprises the following components: 45-48 wt% of vanadium, 16-18 wt% of nitrogen, 3.2-3.6 wt% of chromium, 2.5-2.8 wt% of silicon, 0.65-0.85 wt% of manganese, 1.05-1.20 wt% of carbon and 25.5-31.5 wt% of iron. According to the invention, through adding and controlling the contents of alloying elements, silicon nitride vanadium alloy, which is stable in quality and lower in cost and can be used for microalloying of HRB500 E reinforcing steel bars, is obtained.

Description

technical field [0001] The invention belongs to the technical field of iron and steel microalloying technology and materials. More specifically, the invention relates to a silicon vanadium nitride used for nitrogen addition and microalloying in the steelmaking process and a production method thereof. Background technique [0002] The alloying of steel is usually based on ferromanganese, ferrosilicon, ferrochromium, etc. Microalloy refers to the ferroalloy that adds trace carbon and nitrogen forming elements such as niobium, vanadium and titanium on the basis of the main ferroalloy, and is widely used in production High-strength steel bars, low-alloy high-strength steels and pipeline steels, etc. [0003] Microalloys generally have the following characteristics: (1) The added carbonitride-forming elements strengthen the mechanical properties of steel through the "dissolution-precipitation" behavior during the heating and cooling process of steel; The mechanism is mainly fine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/16C22C1/05
Inventor 谭国臣张光德于成智
Owner LIAONING XINYE NEW MATERIAL
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