CN111346917A - Method for manufacturing foam steel - Google Patents
Method for manufacturing foam steel Download PDFInfo
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- CN111346917A CN111346917A CN202010277689.8A CN202010277689A CN111346917A CN 111346917 A CN111346917 A CN 111346917A CN 202010277689 A CN202010277689 A CN 202010277689A CN 111346917 A CN111346917 A CN 111346917A
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- steel
- foam
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- spherical convex
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
- B21B47/02—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal for folding sheets before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a manufacturing method of foam steel, which comprises the following steps: 1) preparing a foamed steel roller; 2) rolling the spherical convex steel plate; 3) manufacturing a spherical convex steel plate group; 4) and (4) preparing the foam steel. The foam steel produced by the invention has the comprehensive performances of small density, high energy absorption, high temperature resistance, high fire resistance, sound insulation, noise reduction and the like.
Description
Technical Field
The invention relates to the technical field of steel production, in particular to a method for manufacturing foam steel.
Background
The foam steel has the advantages of small density, high energy absorption, high temperature resistance, high fireproof performance, sound insulation, noise reduction and the like, and has wide application prospect in industries such as buildings, automobiles and the like. However, until now, no mature foam steel manufacturing technology exists. Thus, foam steel manufacturing techniques are in need of development.
Chinese patent with publication No. CN104004954B discloses a method for preparing foam steel. Uniformly mixing steel alloy powder and a pore-forming agent according to the volume ratio of 1-4: 9-6, then putting the mixture into a mold to compact a block, demolding, drying, pre-sintering the dried block material, raising the temperature to 800-850 ℃ at the speed of 10-20 ℃/min for pre-sintering for 1-2 hours, continuously raising the temperature to 1000-1200 ℃, keeping the temperature for 3-5 hours, sintering and combining the alloy powder in high-temperature sintering, decomposing and volatilizing the pore-forming agent, cooling the mixture to room temperature along with the furnace after sintering, and taking out the mixture to obtain the foam steel. The technology has short process flow and low equipment requirement, can prepare the foam steel with controllable aperture and porosity, is suitable for preparing the massive foam steel with various aperture sizes and porosity requirements, and can be used as a damping and energy-absorbing material and a filtering material.
Chinese patent with publication number CN 108405862B discloses 'a gradient porous foam steel material and a preparation method', belonging to the technical field of metal porous material preparation. The gradient foam steel material is composed of a plurality of layers of foam steel with different porosities or different pore diameters. The method mainly comprises the following steps: weighing stainless steel powder and a pore-forming agent according to different proportions according to the number of the composition layers of the gradient porous foam steel, uniformly mixing, sequentially pressurizing each layer of mixed raw materials by adopting a step-by-step increasing pressurizing mode, finally integrally forming, drying the formed blank, integrally sintering the dried blank, cooling along with a furnace after sintering is finished, taking out the blank, and fully washing to finally obtain the prepared gradient porous foam steel sample. The gradient porous foam steel material prepared by the method has the advantages of short process flow, low preparation cost and the like, can be used for preparing the gradient porous foam steel with controllable pore diameter and porosity, and can be used as a damping and energy-absorbing material and a sound-absorbing and filtering material.
The methods disclosed in the above patent documents can produce a porous steel, but all of them have problems of low strength and plasticity and poor workability due to the steel matrix being sintered from metal powder, and cannot satisfy the user's requirements for high energy absorption, structural strength, and easy processing of the foam steel. The invention aims to provide a method for manufacturing foam steel, so that the foam steel with overall performances of low density, high energy absorption, high temperature resistance, high fire resistance, sound insulation, noise reduction and the like is obtained.
Disclosure of Invention
The invention provides a manufacturing method of foam steel, and the produced foam steel has the comprehensive performances of small density, high energy absorption, high temperature resistance, high fire resistance, sound insulation, noise reduction and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for manufacturing foam steel comprises the following steps:
1) preparing a foamed steel roller; the roller is provided with protruding hemispheres which protrude out of the surface and are regularly arranged;
2) rolling the spherical convex steel plate; rolling a thin steel plate by a foam steel roller, wherein the rolled steel plate is a spherical convex steel plate with hemispherical bulges regularly arranged on the surface of one side;
3) manufacturing a spherical convex steel plate group; the 2 spherical convex steel plates are laminated and stacked together in a mode that the hemispherical bulges are opposite, and then the two spherical convex steel plates are connected through spot welding, spot welding parts are spaced by a plurality of hemispherical bulges, and welding points are positioned at the top points of the hemispherical bulges; obtaining a spherical convex steel plate group after welding;
4) preparing foam steel; and aligning and stacking the edges of the plurality of groups of spherical convex steel plate groups, then welding the edges, selecting the spacing density of welding spots on the edges according to the requirement of integral rigidity, and obtaining the foam steel after all welding.
The foam steel is smooth foam steel, after the smooth foam steel is prepared, a steel plate with the same length and width as the foam steel is cut, the steel plate is attached to one side or two sides of the foam steel, and then the periphery of the foam steel is welded; and selecting the spacing density of peripheral welding spots according to the requirement of integral rigidity to obtain the smooth-surface foam steel.
And the spot welding adopts a resistance welding mode.
Compared with the prior art, the invention has the beneficial effects that:
1) the produced foam steel has excellent performance, and has the comprehensive performances of small density, high energy absorption, high temperature resistance, high fire resistance, sound insulation, noise reduction and the like;
2) the process is simple and easy to operate;
3) the cost is low.
Drawings
FIG. 1 is a schematic structural diagram of a spherical convex steel plate according to the present invention.
Fig. 2 is a top view of fig. 1.
FIG. 3 is a schematic view of the stacked 2 spherical convex steel plates according to the present invention.
FIG. 4 is a schematic view of a spot welding portion of 2 spherical convex steel plates according to the present invention.
FIG. 5 is a schematic view of a plurality of groups of spherical convex steel plates stacked and welded according to the invention.
FIG. 6 is a schematic view of the welding of the steel plate and the foam steel in the smooth surface foam steel of the present invention.
In the figure: 1. spherical convex steel plate 2, hemispherical bulge 3, spot welding part 4, edge welding spot 5, peripheral welding spot 6 and steel plate
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
the invention relates to a manufacturing method of foam steel, which comprises the following steps:
1) preparing a foamed steel roller; the roller is provided with protruding hemispheres which protrude out of the surface and are regularly arranged;
2) rolling the spherical convex steel plate; after the thin steel plate is rolled by a foam steel roller, the rolled steel plate is a spherical convex steel plate 1 with hemispherical bulges 2 regularly arranged on the surface of one side; (as shown in fig. 1 and 2);
3) manufacturing a spherical convex steel plate group; 2 spherical convex steel plates 1 are attached and stacked together in a mode that the hemispherical bulges 2 are opposite (as shown in figure 3), and then are connected through spot welding, a plurality of hemispherical bulges are arranged at intervals of spot welding parts 3, and welding points are positioned at the top points of the hemispherical bulges 2; obtaining a spherical convex steel plate group after welding (as shown in figure 4);
4) preparing foam steel; and aligning and stacking the edges of a plurality of groups of spherical convex steel plate groups, then welding the edges, selecting the spacing density of welding points 4 at the edges according to the requirement of integral rigidity, and obtaining the foam steel after all welding is finished (as shown in figure 5).
The foam steel is smooth foam steel, after the smooth foam steel is prepared, a steel plate 6 with the same length and width as the foam steel is cut, the steel plate 6 is attached to one side or two sides of the foam steel, and then the periphery of the foam steel is welded; the spacing density of the peripheral weld points 5 is selected according to the overall rigidity requirements to obtain a smooth-faced foam steel (as shown in fig. 6).
And the spot welding adopts a resistance welding mode.
The following examples are carried out on the premise of the technical scheme of the invention, and detailed embodiments and specific operation processes are given, but the scope of the invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.
[ example 1 ]
In this embodiment, the manufacturing of the foamed steel sandwich panel for a fire door is taken as an example, and the specific production process is as follows:
1. manufacturing a foamed steel roller; the diameter of the hemispherical bulges regularly arranged on the surface of the roller is 6mm, the distance between the spherical centers of the adjacent 2 hemispherical bulges is 9mm, the diameter of the roller is 229.0mm, and the length of the roller is 850 mm;
2. rolling the spherical convex steel plate. Rolling a steel plate with the thickness of 0.8mm by using a foam steel roller to obtain a spherical convex steel plate;
3. stacking every 2 spherical convex steel plates together in a mode that one sides of the hemispherical bulges are attached, performing spot welding fixing by adopting resistance welding, wherein the interval of spot welding parts is 4 hemispherical bulges, and obtaining a plurality of groups of spherical convex steel plate groups after spot welding;
4. preparing foam steel; stacking 5 groups of spherical convex steel plate groups together, aligning edges, performing spot welding along the edges, wherein the interval of welding parts of the edges is 100mm, and obtaining the foam steel with the thickness of 30mm after welding;
5. and cutting according to the specifications of 800mm in width and 1900mm in length to obtain the foam steel sandwich board for the fire door.
The foam steel produced in this example had a porosity of 72.5% and a density of 2.145g/cm3Compressive strength of 3100kg/cm2The heat conductivity coefficient is 10.2W/m.K, and the refractoriness is 1400 ℃.
[ example 2 ]
In the embodiment, the manufacturing of the smooth-surface foam steel sandwich panel for the train carriage is taken as an example, and the specific production process is as follows:
1. manufacturing a foamed steel roller; the diameter of the hemispherical bulges regularly arranged on the surface of the roller is 5mm, the distance between the spherical centers of the adjacent 2 hemispherical bulges is 7mm, the diameter of the roller is 178.2mm, and the length of the roller is 1350 mm;
2. rolling the spherical convex steel plate; rolling a steel plate with the thickness of 0.6mm by a foam steel roller to obtain a spherical convex steel plate;
3. stacking every 2 spherical convex steel plates together in a mode of attaching one side of each hemispherical bulge, performing spot welding by adopting resistance welding, wherein the interval of spot welding parts is 5 hemispherical bulges, and obtaining a plurality of groups of spherical convex steel plate groups after the spot welding is completed;
4. preparing foam steel; stacking 6 groups of spherical convex steel plate groups together, aligning edges, performing spot welding, wherein the interval of welding parts at the edges is 80mm, and obtaining the foam steel with the thickness of 30mm after welding;
5. cutting the foam steel according to the specifications of 1350mm in width and 2500mm in length;
6. cutting 2 steel plates with the thickness of 0.6mm, the width of 1350mm and the length of 2500mm, respectively sticking the 2 steel plates on two sides of the foam steel, fixing the foam steel by spot welding along the periphery, wherein the interval of welding parts on the periphery is 70mm, and obtaining the smooth-faced foam steel sandwich plate for the train carriage after welding.
The foam steel produced in this example had a porosity of 87.6% and a density of 0.97g/cm3Compressive strength of 2900kg/cm2The thermal conductivity coefficient is 9.26W/mK, and the refractoriness is 1390 ℃.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. A method for manufacturing foam steel is characterized by comprising the following steps:
1) preparing a foamed steel roller; the roller is provided with protruding hemispheres which protrude out of the surface and are regularly arranged;
2) rolling the spherical convex steel plate; rolling the thin steel plate by a foam steel roller, wherein the rolled steel plate is a spherical convex steel plate with hemispherical bulges regularly arranged on the surface of one side;
3) manufacturing a spherical convex steel plate group; the 2 spherical convex steel plates are laminated and stacked together in a mode that the hemispherical bulges are opposite, and then the two spherical convex steel plates are connected through spot welding, spot welding parts are spaced by a plurality of hemispherical bulges, and welding points are positioned at the top points of the hemispherical bulges; obtaining a spherical convex steel plate group after welding;
4) preparing foam steel; and aligning and stacking the edges of the plurality of groups of spherical convex steel plate groups, then welding the edges, selecting the spacing density of welding spots on the edges according to the requirement of integral rigidity, and obtaining the foam steel after all welding.
2. The method for manufacturing the foam steel as claimed in claim 1, wherein the foam steel is a smooth foam steel, and after the smooth foam steel is prepared, a steel plate having the same length and width as the foam steel is cut out, and the steel plate is attached to one side or both sides of the foam steel and then subjected to peripheral welding; and selecting the spacing density of peripheral welding spots according to the requirement of integral rigidity to obtain the smooth-surface foam steel.
3. A method of manufacturing a steel foam according to claim 1, wherein said spot welding is resistance welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277689.8A CN111346917A (en) | 2020-04-08 | 2020-04-08 | Method for manufacturing foam steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277689.8A CN111346917A (en) | 2020-04-08 | 2020-04-08 | Method for manufacturing foam steel |
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| Publication Number | Publication Date |
|---|---|
| CN111346917A true CN111346917A (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010277689.8A Pending CN111346917A (en) | 2020-04-08 | 2020-04-08 | Method for manufacturing foam steel |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946527A (en) * | 1989-09-19 | 1990-08-07 | The Procter & Gamble Company | Pressure-sensitive adhesive fastener and method of making same |
| CN101092071A (en) * | 2007-07-09 | 2007-12-26 | 东南大学 | Method for preparing porous metal |
| CN201043324Y (en) * | 2007-05-25 | 2008-04-02 | 姜荣行 | Metallic corrugated composite board |
| CN203410102U (en) * | 2013-06-27 | 2014-01-29 | 宁波新绿方能源科技有限公司 | Impact energy absorption device |
| CN107531006A (en) * | 2015-06-30 | 2018-01-02 | 宇部爱科喜模株式会社 | Hollow construction plate and its manufacture method |
-
2020
- 2020-04-08 CN CN202010277689.8A patent/CN111346917A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946527A (en) * | 1989-09-19 | 1990-08-07 | The Procter & Gamble Company | Pressure-sensitive adhesive fastener and method of making same |
| CN201043324Y (en) * | 2007-05-25 | 2008-04-02 | 姜荣行 | Metallic corrugated composite board |
| CN101092071A (en) * | 2007-07-09 | 2007-12-26 | 东南大学 | Method for preparing porous metal |
| CN203410102U (en) * | 2013-06-27 | 2014-01-29 | 宁波新绿方能源科技有限公司 | Impact energy absorption device |
| CN107531006A (en) * | 2015-06-30 | 2018-01-02 | 宇部爱科喜模株式会社 | Hollow construction plate and its manufacture method |
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Application publication date: 20200630 |
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