Preparation method of vanadium nitride and nitride ferrovanadium alloy reinforcing agent

Abstract

The invention discloses a preparation method of a vanadium nitride and nitride ferrovanadium alloy reinforcing agent and belongs to the field of special alloy materials. The reinforcing agent is composed of 23-66% of Si, 0.1-17.5% of Mn, 11-37% of N, 0-9.6% of Ti, 0-7.3% of Cr, 0.03-5.6% of Al, 0.1-1.9% of C, less than or equal to 0.10% of P, less than or equal to 0.15% of S, and the balance Fe and impurities. A solid nitride alloy element like silicon and manganese is preferably used and forms a nitride together with N, and the preparation method mainly has the following characteristics that1, the rate of bonding with nitrogen is high, 2, the method benefits molten steel without harm, and 3, molten steel deoxidation and desulfuration are facilitated to optimize the thermodynamic environment of the vanadium nitride and nitride ferrovanadium microalloying, more nitrogen ions can be cured, and the utilization rate of the alloy elements is greatly improved.

Description

[0001] The present invention is an application number: 201610711104.2, the application date is: August 23, 2016, and the title is "a vanadium nitride and ferrovanadium nitride alloy strengthening agent and its preparation method and application method". Application. technical field

[0002] The invention belongs to the field of special alloy materials, and more specifically relates to a preparation method of vanadium nitride and ferrovanadium nitride alloy reinforcing agent. Background technique

[0003] Vanadium nitride and ferrovanadium nitride are alloys widely used in iron and steel metallurgy. When producing high-strength steel, vanadium nitride and ferrovanadium nitride alloy are usually used to alloy molten steel to improve the mechanical strength of steel ( performance). At present, vanadium nitride or ferrovanadium nitride is used to alloy molten steel alone. In microalloyed steels, microalloying of vanadium plays an important role. With the continuous deepening ...

Examples

Embodiment 1

[0037] (1) Select raw materials, metal silicon and ferrosilicon, and crush and grind them separately to obtain fine materials with a particle size of ≤0.2mm. The mass fractions of each component of the selected metal silicon are: Si: 96%, Fe: 1.8%, Al: 0.03%, C: 0.05%, P: 0.05%, S: 0.06%, and the balance is unavoidable impurities. The mass fraction of each component of ferrosilicon is: Si: 72%, Al: 0.3%, Mn: 0.7%, C: 0.12%, P: 0.10%, S: 0.12%, and the balance is Fe and unavoidable impurities.

[0038] (2) Proportioning the fine material obtained from the processing in (1), then adding 1.5% (mass fraction) binder to fully mix and granulate, and the particle size is ≤4.0mm. Binder: polycarbosilane 31%, silicic acid sol 60%, antelope methyl cellulose 9%.

[0039] (3) Put the granular material made in (2) into a drying furnace to heat, control the temperature to 350° C., and simultaneously fill the furnace with nitrogen gas with a purity of 99.0%, and keep the temperature for 6 h...

Embodiment 2

[0047] (1) Select raw materials, silicomanganese and metal silicon, and crush and grind them separately to obtain fine materials with a particle size of ≤0.35mm. The mass fraction of each component of silicon-manganese selected is: Si: 17%, Mn: 65%, Al: 0.3%, C: 3.2%, P: 0.15%, S: 0.20%, the balance is Fe and unavoidable Impurities. The mass fraction of each component of metal silicon is: Si: 97.4%, Fe: 1.6%, Al: 0.21%, C≤0.04%, P≤0.04%, S≤0.05%, and the balance is unavoidable impurities.

[0048] (2) Proportioning the fine material obtained in (1), then adding 1.6% (mass fraction) of a binder to fully mix and granulate, and the particle size is ≤4.0mm. Binder: polycarbosilane 42%, silicic acid sol 46%, antelope methyl cellulose 12%.

[0049] (3) Put the granular material made in (2) into a drying furnace to heat, control the temperature to 300° C., and simultaneously fill the furnace with nitrogen gas with a purity of 99.0%, and keep the temperature for 8 hours.

[0050] (...

Embodiment 3

[0055] (1) Select raw materials, ferrosilicon, ferromanganese, ferrotitanium, and ferrochrome, and crush and grind them separately to obtain fine materials with a particle size of ≤0.3mm. The mass fraction of each component of ferrosilicon selected is: Si: 70%, Al: 0.9%, Mn: 0.5%, C: 0.3%, P: ≤0.09%, S≤0.10%, the balance is Fe and unavoidable of impurities. The mass fraction of each component of ferromanganese is: Si: 2.0%, Mn: 70%, Al: 0.25%, C: 6.0%, P≤0.20%, S≤0.03%, and the balance is Fe and unavoidable impurities. The mass fraction of each component of ferro-titanium is: Ti: 69%, Si: 1.2%, Mn: 1.5%, Al: 5.0%, C: 0.4%, P≤0.05%, S≤0.04%, and the balance is Fe and unavoidable impurities. The mass fraction of each component of ferrochrome is: Cr: 52%, Si: 3.0%, C: 2.0%, P≤0.06%, S≤0.05%, and the balance is Fe and unavoidable impurities.

[0056] (2) Proportioning the fine material obtained in (1), then adding 1.2% (mass fraction) of binder to fully mix and granulate, and t...

[0001] The present invention is an application number: 201610711104.2, the application date is: August 23, 2016, and the title is "a vanadium nitride and ferrovanadium nitride alloy strengthening agent and its preparation method and application method". Application. technical field

[0002] The invention belongs to the field of special alloy materials, and more specifically relates to a preparation method of vanadium nitride and ferrovanadium nitride alloy reinforcing agent. Background technique

[0003] Vanadium nitride and ferrovanadium nitride are alloys widely used in iron and steel metallurgy. When producing high-strength steel, vanadium nitride and ferrovanadium nitride alloy are usually used to alloy molten steel to improve the mechanical strength of steel ( performance). At present, vanadium nitride or ferrovanadium nitride is used to alloy molten steel alone. In microalloyed steels, microalloying of vanadium plays an important role. With the continuous deepening ...

Examples

Embodiment 1

[0037] (1) Select raw materials, metal silicon and ferrosilicon, and crush and grind them separately to obtain fine materials with a particle size of ≤0.2mm. The mass fractions of each component of the selected metal silicon are: Si: 96%, Fe: 1.8%, Al: 0.03%, C: 0.05%, P: 0.05%, S: 0.06%, and the balance is unavoidable impurities. The mass fraction of each component of ferrosilicon is: Si: 72%, Al: 0.3%, Mn: 0.7%, C: 0.12%, P: 0.10%, S: 0.12%, and the balance is Fe and unavoidable impurities.

[0038] (2) Proportioning the fine material obtained from the processing in (1), then adding 1.5% (mass fraction) binder to fully mix and granulate, and the particle size is ≤4.0mm. Binder: polycarbosilane 31%, silicic acid sol 60%, antelope methyl cellulose 9%.

[0039] (3) Put the granular material made in (2) into a drying furnace to heat, control the temperature to 350° C., and simultaneously fill the furnace with nitrogen gas with a purity of 99.0%, and keep the temperature for 6 h...

Embodiment 2

[0047] (1) Select raw materials, silicomanganese and metal silicon, and crush and grind them separately to obtain fine materials with a particle size of ≤0.35mm. The mass fraction of each component of silicon-manganese selected is: Si: 17%, Mn: 65%, Al: 0.3%, C: 3.2%, P: 0.15%, S: 0.20%, the balance is Fe and unavoidable Impurities. The mass fraction of each component of metal silicon is: Si: 97.4%, Fe: 1.6%, Al: 0.21%, C≤0.04%, P≤0.04%, S≤0.05%, and the balance is unavoidable impurities.

[0048] (2) Proportioning the fine material obtained in (1), then adding 1.6% (mass fraction) of a binder to fully mix and granulate, and the particle size is ≤4.0mm. Binder: polycarbosilane 42%, silicic acid sol 46%, antelope methyl cellulose 12%.

[0049] (3) Put the granular material made in (2) into a drying furnace to heat, control the temperature to 300° C., and simultaneously fill the furnace with nitrogen gas with a purity of 99.0%, and keep the temperature for 8 hours.

[0050] (...

Embodiment 3

[0055] (1) Select raw materials, ferrosilicon, ferromanganese, ferrotitanium, and ferrochrome, and crush and grind them separately to obtain fine materials with a particle size of ≤0.3mm. The mass fraction of each component of ferrosilicon selected is: Si: 70%, Al: 0.9%, Mn: 0.5%, C: 0.3%, P: ≤0.09%, S≤0.10%, the balance is Fe and unavoidable of impurities. The mass fraction of each component of ferromanganese is: Si: 2.0%, Mn: 70%, Al: 0.25%, C: 6.0%, P≤0.20%, S≤0.03%, and the balance is Fe and unavoidable impurities. The mass fraction of each component of ferro-titanium is: Ti: 69%, Si: 1.2%, Mn: 1.5%, Al: 5.0%, C: 0.4%, P≤0.05%, S≤0.04%, and the balance is Fe and unavoidable impurities. The mass fraction of each component of ferrochrome is: Cr: 52%, Si: 3.0%, C: 2.0%, P≤0.06%, S≤0.05%, and the balance is Fe and unavoidable impurities.

[0056] (2) Proportioning the fine material obtained in (1), then adding 1.2% (mass fraction) of binder to fully mix and granulate, and t...