阅读说明：本技术 特种合金阻隔抑爆材料 (Special alloy barrier explosion suppression material ) 是由 魏光明 石勇 于 2020-05-22 设计创作，主要内容包括：本发明公开了特种合金阻隔抑爆材料,所述阻隔抑爆材料包括以下重量分数的原料：硅0.3～0.4％、铁0.7～0.9％、铜0.2～0.3％、锰2.5～3.5％、镁0.1～0.2％、锌0.2～0.3％、钛0.1～0.2％、银0.4～0.6％、镍0.01～0.03％、余量为铝。本发明公开了特种合金阻隔抑爆材料的制备方法,先通过先将各金属粉末混合预热,再烧结,温轧成原坯,最后轧制成箔,切缝拉伸制得。本发明制备的特种合金阻隔抑爆材料导电性能好,不易坍塌、不易产生碎屑；制备工艺简单,制备方法耗能小,原料结合性好,不易发生形变。(The invention discloses a special alloy barrier explosion suppression material, which comprises the following raw materials in parts by weight: 0.3 to 0.4% of silicon, 0.7 to 0.9% of iron, 0.2 to 0.3% of copper, 2.5 to 3.5% of manganese, 0.1 to 0.2% of magnesium, 0.2 to 0.3% of zinc, 0.1 to 0.2% of titanium, 0.4 to 0.6% of silver, 0.01 to 0.03% of nickel and the balance of aluminum. The invention discloses a preparation method of a special alloy barrier explosion suppression material, which is prepared by mixing and preheating metal powder, sintering, warm rolling into an original blank, rolling into a foil, and stretching a joint seam. The special alloy barrier explosion suppression material prepared by the invention has good conductivity, is not easy to collapse and generate fragments; the preparation process is simple, the preparation method has low energy consumption, the raw materials have good associativity, and deformation is not easy to occur.)

1. The special alloy barrier explosion suppression material is characterized by comprising the following raw materials in parts by weight: 0.3 to 0.4% of silicon, 0.7 to 0.9% of iron, 0.2 to 0.3% of copper, 2.5 to 3.5% of manganese, 0.1 to 0.2% of magnesium, 0.2 to 0.3% of zinc, 0.1 to 0.2% of titanium, 0.4 to 0.6% of silver, 0.01 to 0.03% of nickel and the balance of aluminum.

2. A barrier and explosion suppression material as recited in claim 1, wherein said barrier and explosion suppression material comprises the following raw materials in weight fraction: 0.35% of silicon, 0.8% of iron, 0.25% of copper, 3.0% of manganese, 0.15% of magnesium, 0.25% of zinc, 0.15% of titanium, 0.5% of silver, 0.02% of nickel and the balance of aluminum.

3. A method for preparing a barrier explosion suppression material as claimed in claim 1 or 2, which comprises the following steps:

(1) uniformly mixing the raw materials, preheating to remove water, and rolling the raw materials into a plate strip;

(2) directly sintering the rolled plate strip under the protection of nitrogen to obtain a sintered plate strip;

(3) cooling the sintered plate strip to 200 ℃, and then carrying out warm rolling to prepare a raw blank plate strip with the deformation of 30%;

(4) rolling the raw plate strip into a special alloy foil;

(5) shaping the special alloy foil cutting seam, stretching and expanding the special alloy foil cutting seam into a special alloy foil net, and laminating and forming the special alloy foil net to obtain the honeycomb-shaped special alloy barrier explosion suppression material.

4. The method according to claim 1, wherein the rolling pressure in step (1) is 1500 Kg.

5. The production method according to claim 1, wherein in the step (1), the strip has a width of 500mm and a thickness of 2 mm.

6. The method according to claim 1, wherein the purity of the nitrogen gas in the step (2) is 99.99%.

7. The preparation method according to claim 1, wherein in the step (2), the sintering temperature is 450-500 ℃, and the sintering time is 1.5-2.5 h.

8. The production method according to claim 1, wherein in the step (3), the pressure of the warm rolling is 1000 Kg.

9. The manufacturing method according to claim 1, wherein in the step (4), the aluminum alloy foil has a thickness of 0.05mm and a width of 180 mm.

10. The method of claim 1, wherein in step (5), the slit length is 16mm and the pitch between adjacent slits is 2 mm.

Technical Field

The invention relates to the technical field of barrier explosion suppression materials, in particular to a special alloy barrier explosion suppression material.

Background

In the field of storage and transportation of flammable liquids or gases, people are protected carefully; however, even then, due to some unforeseeable and sudden reasons, chemical plants, oil refineries, gas stations, automobiles, oil vehicles, oil depots, oil storage tanks and the like are subjected to accidents to cause explosion, which causes immeasurable and enormous loss to the state and the property of people. In view of market demands, various explosion suppression materials such as polyurethane foam, paper type materials, film materials and the like are developed in succession in countries all over the world, but the materials have poor chemical stability in petroleum products, are easy to crack and break, cause liquid pollution and are not suitable for long-term use. The petroleum product is burnt to generate explosion, three elements, oxygen, combustible materials and temperature are required, and the explosion can not occur as long as one element is cut off. After hundreds of repeated formulation tests for several years, a special honeycomb structure formed by meshes in material lamination is developed, the inner cavity of the oil tank gas cylinder of the oil tank is divided into thousands of countless small 'cells', the 'cells' can effectively inhibit the spread of flame, and meanwhile, the special structure has better heat conductivity in unit volume, can quickly absorb most of heat released by combustion, greatly reduces the final temperature after the combustion reaction, reduces the expansion process of reaction gas, increases the pressure value of a container very little, and meets the effect.

Although other barrier explosion-suppression materials such as polyurethane foam molding barrier explosion-prevention materials and injection molding spherical non-metal barrier explosion-prevention materials exist at present, the two materials have low working temperature and poor heat conduction. Therefore, the aluminum alloy barrier explosion-proof material is still a mainstream product, the honeycomb structure of the aluminum alloy foil can resist the instantaneous capacity release of explosion, absorb the high temperature generated by explosion and quickly radiate heat outwards, so that the spread and expansion of flame are prevented, and the safety of storage and transportation is guaranteed. However, the common aluminum alloy foil has the defects of high brittleness rate, low elongation rate and poor corrosion resistance, is easy to deform and damage during processing, and is easy to collapse and crack during use. So that the container cannot achieve the predetermined anti-knock property. Therefore, the composition and composition of the aluminum alloy need to be adjusted so that it is not prone to collapse and chipping.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a special alloy barrier explosion suppression material. The conductive performance is good, collapse and chipping are not easy to generate; the preparation method has the advantages of low energy consumption, good raw material associativity and difficult deformation.

The invention is realized by the following technical scheme, and provides a special alloy barrier explosion suppression material.

The invention provides a special alloy barrier explosion suppression material in a first aspect, which comprises the following raw materials in parts by weight: 0.3 to 0.4% of silicon, 0.7 to 0.9% of iron, 0.2 to 0.3% of copper, 2.5 to 3.5% of manganese, 0.1 to 0.2% of magnesium, 0.2 to 0.3% of zinc, 0.1 to 0.2% of titanium, 0.4 to 0.6% of silver, 0.01 to 0.03% of nickel and the balance of aluminum.

Preferably, the barrier explosion suppression material comprises the following raw materials in parts by weight: 0.35% of silicon, 0.8% of iron, 0.25% of copper, 3.0% of manganese, 0.15% of magnesium, 0.25% of zinc, 0.15% of titanium, 0.5% of silver, 0.02% of nickel and the balance of aluminum.

The second aspect of the invention provides a preparation method of a special alloy barrier explosion suppression material, which comprises the following steps:

(1) uniformly mixing the raw materials, preheating to remove water, and rolling the raw materials into a plate strip;

(2) directly sintering the rolled plate strip under the protection of nitrogen to obtain a sintered plate strip;

(3) cooling the sintered plate strip to 200 ℃, and then carrying out warm rolling to prepare a raw blank plate strip with the deformation of 30%;

(4) rolling the raw plate strip into a special alloy foil;

(5) shaping the special alloy foil cutting seam, stretching and expanding the special alloy foil cutting seam into a special alloy foil net, and laminating and forming the special alloy foil net to obtain the honeycomb-shaped special alloy barrier explosion suppression material.

Preferably, in the step (1), the pressure of the rolling is 1500 Kg.

Preferably, in the step (1), the width of the plate strip is 500mm, and the thickness of the plate strip is 2 mm.

Preferably, in the step (2), the purity of the nitrogen is 99.99%.

Preferably, in the step (2), the sintering temperature is 450-500 ℃, and the sintering time is 1.5-2.5 h.

Preferably, in the step (3), the pressure of warm rolling is 1000 Kg.

Preferably, in the step (4), the aluminum alloy foil has a thickness of 0.05mm and a width of 180 mm.

Preferably, in the step (5), the length of the slits is 16mm, and the distance between adjacent slits is 2 mm.

The invention has the beneficial effects that:

1. the special alloy barrier explosion suppression material has good conductivity, is not easy to collapse and generate fragments.

2. The invention adopts powdery raw materials for rolling and sintering, and prepares the raw blank plate and strip after cooling and warm rolling. The preparation process is simple, the energy consumption is low, the time consumption is short, the sintering is carried out under the protection of nitrogen, so that all metals are better combined, and other harmful compounds are not formed; the prepared finished product has high toughness and is not easy to deform.

Drawings

FIG. 1 is a process flow chart of the invention for preparing an aluminum alloy barrier explosion suppression material;

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

As described in the background art, the existing aluminum alloy barrier explosion suppression material is mainly formed by heating and melting each metal simple substance into a liquid state, dispersing each metal in a molten liquid phase, and then casting into ingots. During the forming process of the liquid cast ingot, nitrogen and hexachloroethane are required to be used for degassing, and hexachloroethane is the most common degassing agent in aluminum alloy, is one of the most toxic substances of chlorinated substances and has toxic action on central nerves of people. The liquid temperature of each metal is different, the dispersion is easy to cause uneven dispersion or metal segregation phenomenon when the metal is dispersed in a molten liquid phase, and the prepared honeycomb-shaped obstructing and explosion suppressing material is easy to deform and collapse to generate fragments.

Based on the above, the invention provides a special alloy barrier explosion suppression material. The barrier explosion suppression material comprises the following raw materials in parts by weight: 0.3 to 0.4% of silicon, 0.7 to 0.9% of iron, 0.2 to 0.3% of copper, 2.5 to 3.5% of manganese, 0.1 to 0.2% of magnesium, 0.2 to 0.3% of zinc, 0.1 to 0.2% of titanium, 0.4 to 0.6% of silver, 0.01 to 0.03% of nickel and the balance of aluminum.

In order to ensure that the special alloy barrier explosion suppression material has good conductivity, is not easy to collapse and generate fragments, the inventor conducts a plurality of tests on the formula, and finally obtains that the honeycomb alloy material prepared by using the metal elements and the mixture ratio has the best effect. Silicon is added into aluminum to have a certain strengthening effect, but the silicon can limit the effect of magnesium, so as to avoid the loss of the effect of strengthening element magnesium; silicon also combines with iron and aluminum to form coarse AlFeSi particles, thereby affecting the fatigue life of the barrier explosion suppression material. Therefore, the invention controls the silicon content to be 0.3-0.4%, preferably, the silicon content is controlled to be 0.35%. Copper has a certain solid solution strengthening effect, and the corrosion resistance of the barrier explosion suppression material can be reduced when the copper content is too high; therefore, the copper content is controlled to be 0.2-0.3%, and preferably, the copper content is controlled to be 0.25%. Manganese can prevent the recrystallization process of the aluminum alloy, improve the recrystallization temperature, obviously refine recrystallized grains and pass through MnAl₆Dissolving impurity iron and reducing the harmful effect of iron. The strength of the barrier explosion suppression material can be improved by matching manganese with magnesium, so that the content of manganese is controlled to be 2.5-3.5%, and preferably, the content of manganese is controlled to be 3.0%. The magnesium has obvious strengthening effect on aluminum, but the material has high brittleness due to excessively high magnesium content, and the periphery of the aluminum alloy foil is easy to crack during rolling; the content of magnesium is controlled to be 0.1-0.2%; preferably, the content of magnesium is controlled to 0.15%.

When the special alloy barrier explosion suppression material is prepared, because the liquid temperatures of different metals are different, and each liquid metal is dispersed, harmful compounds are easily generated; and the solution generates metal segregation phenomenon in the smelting state, so that the material content is unstable. Therefore, the invention adopts the following method:

the first step is as follows: the raw materials are uniformly mixed, preheated to remove water, and rolled into plate strips. Therefore, all the metals can be fully and uniformly mixed, and the mechanical alloying combination of the metals is realized. The second step is that: and directly sintering the rolled plate strip under the protection of nitrogen to obtain the sintered plate strip. The main alloying elements of magnesium, zinc, iron, manganese and the like in the aluminum alloy do not form compounds, all parts of the sintered plate strip are uniform, and the finally obtained aluminum alloy has high hardness. The third step: and cooling the sintered plate strip to 200 ℃, and then carrying out warm rolling to prepare the raw blank plate strip with the deformation of 30%. The warm rolling can reduce the recrystallization process of the alloy, reduce the brittleness of the alloy and ensure that the alloy is not easy to deform after being cooled. The fourth step: rolling the raw plate strip into a special alloy foil; the fifth step: shaping the special alloy foil cutting seam, stretching and expanding the special alloy foil cutting seam into a special alloy foil net, and laminating and forming the special alloy foil net to obtain the honeycomb-shaped special alloy barrier explosion suppression material. The prepared honeycomb-shaped barrier explosion suppression material has high hardness and high strength, is not easy to deform, and is not easy to generate fragments and collapse in the later use process.

In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments. If the experimental conditions not specified in the examples are specified, the conditions are generally conventional or recommended by the reagent company; reagents, consumables, and the like used in the following examples are commercially available unless otherwise specified.