CN104313507A - Preparation method of iron alloy - Google Patents

Abstract

The invention relates to a preparation method of an iron alloy. The preparation method comprises the following steps: preparing raw materials in percentage by weight: 1-1.4% of carbon, 6-7% of manganese, 4-5% of copper, 1.5-2.5% of titanium, 0.01-0.03% of tellurium, 0.01-0.03% of bismuth, 0.03-0.05% of molybdenum, 0.01-0.03% of zirconium, 0.15-0.30% of tungsten, 0.5-1.2% of silicon and the balance of iron and inevitable impurities; putting the raw materials into a smelting furnace, heating into a liquid state, and mixing by stirring; introducing nitrogen into the smelting furnace from the bottom of the furnace in a smelting state; and performing cold rolling.

Description

A kind of iron alloy preparation method

Technical field

The present invention relates to a kind of ferroalloy materials, particularly relate to one and there is corrosion resistant iron alloy preparation method.

Background technology

At present, the iron alloy kind in Application Areas, substantially based on the performance that iron alloy has, seldom has iron alloy to have good over-all properties.And good over-all properties is not only the demand of industrial circle, the Application Areas of ferroalloy materials also can be expanded.

Summary of the invention

Technical problem to be solved by this invention improves proportioning and the making method of existing iron alloy, provides a kind of erosion resistance, high strength, sludge proof ferroalloy materials.

The present invention is achieved by the following technical solutions:

A kind of iron alloy preparation method, its step comprises:

1), by following weight percent composition preparation raw material, the carbon of 1-1.4%, the manganese of 6-7%, the copper of 4-5%, the titanium of 1.5-2.5%, the tellurium of 0.01-0.03%, the bismuth of 0.01-0.03%, the molybdenum of 0.03-0.05%, the zirconium of 0.01-0.03%, the tungsten of 0.15-0.30%, the silicon of 0.5-1.2%, all the other are iron and inevitable impurity;

2), by step 1) above-mentioned batching is put into smelting furnace be heated to liquid state and be uniformly mixed, bottom smelting furnace, the nitrogen 15-20 minute of 0.5-2.0MPa is passed under melting state, iron alloy liquid first constant temperature breeds 20-30 minute, then cooling 200-300 degree, be warming up to again and breed temperature, be incubated after 30-60 minute and cast, then cold rolling.

Described nitrogen pressure is preferably 1.0MPa.

Wherein the weight ratio of manganese and titanium is 3: 1-5: 1.

The invention has the beneficial effects as follows:

1), iron alloy of the present invention compares with existing similar iron alloy, has high strength.

2), iron alloy of the present invention soaks for a long time and does not weather in the acidic solution of PH4-5.

3), there is not corrosion and oxidative phenomena in iron alloy of the present invention in wet environment.

4) the present invention is by fusion process, even identical composition, adopts constant temperature to breed and 200-300 degree of lowering the temperature, can suppress the speed of growth of some crystal in organizer in iron alloy, make to organize the arrangement of interior crystal evenly.

Embodiment

Technical scheme of the present invention is described in detail below by way of specific embodiment.

Embodiment 1

A kind of iron alloy preparation method, its step comprises:

1), by following weight percent composition preparation raw material, the carbon of 1%, the manganese of 6%, the copper of 4%, the titanium of 1.5%, the tellurium of 0.01%, the bismuth of 0.01%, the molybdenum of 0.03%, the zirconium of 0.01%, the tungsten of 0.15%, the silicon of 0.5%, all the other are iron and inevitable impurity;

2), by step 1) above-mentioned batching is put into smelting furnace be heated to liquid state and be uniformly mixed, bottom smelting furnace, the nitrogen 15-20 minute of 0.5-2.0MPa is passed under melting state, iron alloy liquid first constant temperature breeds 20-30 minute, then cooling 200-300 degree, be warming up to again and breed temperature, be incubated after 30-60 minute and cast, then cold rolling.

Tested by product, obtaining product strength is 0.215MPa, puts into the acidic solution 1 hour that pH value is 4.5, observes surface-brightening by sight; Do SaltSprayTest 60 hours, surface is corrosion-free.

Embodiment 2

A kind of iron alloy preparation method, its step comprises:

1), by following weight percent composition preparation raw material, the carbon of 1.4%, the manganese of 7%, the copper of 5%, the titanium of 2.5%, the tellurium of 0.03%, the bismuth of 0.03%, the molybdenum of 0.05%, the zirconium of 0.03%, the tungsten of 0.30%, the silicon of 1.2%, all the other are iron and inevitable impurity;

2), by step 1) above-mentioned batching is put into smelting furnace be heated to liquid state and be uniformly mixed, bottom smelting furnace, the nitrogen 15-20 minute of 0.5-2.0MPa is passed under melting state, iron alloy liquid first constant temperature breeds 20-30 minute, then cooling 200-300 degree, be warming up to again and breed temperature, be incubated after 30-60 minute and cast, then cold rolling.

Tested by product, obtaining product strength is 0.21MPa, puts into the acidic solution 1 hour that pH value is 4.5, observes surface-brightening by sight; Do SaltSprayTest 60 hours, surface is corrosion-free.

Embodiment 3

A kind of iron alloy preparation method, its step comprises:

1), by following weight percent composition preparation raw material, the carbon of 1.2%, the manganese of 6.5%, the copper of 4.5%, the titanium of 2.2%, the tellurium of 0.015%, the bismuth of 0.02%, the molybdenum of 0.04%, the zirconium of 0.015%, the tungsten of 0.25%, the silicon of 0.8%, all the other are iron and inevitable impurity;

2), by step 1) above-mentioned batching is put into smelting furnace be heated to liquid state and be uniformly mixed, bottom smelting furnace, the nitrogen 15-20 minute of 0.5-2.0MPa is passed under melting state, iron alloy liquid first constant temperature breeds 20-30 minute, then cooling 200-300 degree, be warming up to again and breed temperature, be incubated after 30-60 minute and cast, then cold rolling.

Tested by product, obtaining product strength is 0.23MPa, puts into the acidic solution 1 hour that pH value is 4.5, observes surface-brightening by sight; Do SaltSprayTest 60 hours, surface is corrosion-free.

Claims (3)

1. an iron alloy preparation method, is characterized in that: its step comprises:

1), by following weight percent composition preparation raw material, the carbon of 1-1.4%, the manganese of 6-7%, the copper of 4-5%, the titanium of 1.5-2.5%, the tellurium of 0.01-0.03%, the bismuth of 0.01-0.03%, the molybdenum of 0.03-0.05%, the zirconium of 0.01-0.03%, the tungsten of 0.15-0.30%, the silicon of 0.5-1.2%, all the other are iron and inevitable impurity;

2), by step 1) above-mentioned batching is put into smelting furnace be heated to liquid state and be uniformly mixed, bottom smelting furnace, the nitrogen 15-20 minute of 0.5-2.0MPa is passed under melting state, iron alloy liquid first constant temperature breeds 20-30 minute, then cooling 200-300 degree, be warming up to again and breed temperature, be incubated after 30-60 minute and cast, then cold rolling.

2. iron alloy preparation method according to claim 1, is characterized in that: described nitrogen pressure is preferably 1.0MPa.

3. iron alloy preparation method according to claim 1, is characterized in that: wherein the weight ratio of manganese and titanium is 3: 1-5: 1.