CN111496483A - Manufacturing method of multifunctional steel structure - Google Patents
Manufacturing method of multifunctional steel structure Download PDFInfo
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- CN111496483A CN111496483A CN202010420116.6A CN202010420116A CN111496483A CN 111496483 A CN111496483 A CN 111496483A CN 202010420116 A CN202010420116 A CN 202010420116A CN 111496483 A CN111496483 A CN 111496483A
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Abstract
The invention discloses a manufacturing method of a multifunctional steel structure, which relates to the technical field of steel structure production and comprises the following steps: selecting materials, lofting, marking materials, cutting, welding an abrasion-resistant layer, plating an corrosion-resistant layer, forming, edge processing, drilling, processing a friction surface, processing a tube ball, assembling, inspecting quality and taking out of a warehouse. The steel structure manufactured by the method not only has good corrosion resistance, a wear-resistant layer is welded on the steel structure, the strength and the wear resistance of the steel structure are improved, and the workpiece can be cut by workers according to the guide of the underline when the workpiece is cut by the underline, the processing table, the cutting head and the numerical control machine tool through the underline, so that the damage to the workpiece production caused by cutting errors is reduced.
Description
Technical Field
The invention relates to the technical field of steel structure production, in particular to a manufacturing method of a multifunctional steel structure.
Background
The steel structure is a very mature structure body as a main structure of a house building, the existing steel structure mainly adopts an assembled steel structure formed by assembling steel structure main components, and the steel structure building has the characteristics of saving construction time, being not influenced by seasons, increasing the using area of a residential space, reducing construction waste and environmental pollution, recycling building materials, promoting the development of a novel building material industry, having good anti-seismic performance, being easy to reform, flexible and convenient, high in strength, light in dead weight and the like; so that steel structure buildings have gradually occupied a part of the market in the buildings.
Make suitable size and shape with steel construction raw and other materials through the cutting in the steel construction production process, assemble into a complete steel construction with each steel construction component through the equipment, but the cutting error appears easily when the cutting in the manufacturing approach of current steel construction, leads to later stage operation processing inconvenient, and current steel construction manufacturing approach when the equipment, and packaging efficiency is low, is unfavorable for the high-efficient production of steel construction. Secondly, the existing steel structure has poor corrosion resistance, and is easy to rust particularly in the environment of moist and corrosive media.
Disclosure of Invention
The invention provides a manufacturing method of a multifunctional steel structure, aiming at solving the problems of the steel structure. The steel structure manufactured by the method has good corrosion resistance, the wear-resistant layer is welded on the steel structure, the strength and the wear resistance of the steel structure are improved, the production efficiency is high, and the industrial production is easy to realize.
In order to achieve the purpose, the invention provides the following technical scheme:
a manufacturing method of a multifunctional steel structure comprises the following steps:
the method comprises the following steps: selecting materials, namely selecting high-quality raw materials for manufacturing products;
step two: lofting, and placing a proper sample plate and a sample rod for workers to use;
step three: material marking, namely classifying, marking and labeling raw materials with different sizes;
step four: cutting, namely processing the raw materials into proper size and shape;
step five: welding a wear-resistant layer, wherein the wear-resistant layer is welded on the surface of a raw material, and the wear-resistant layer comprises the following components in percentage by mass: c: 0.3-0.5%, Si: 0.15-0.35%, Mn: 0.05-0.15%, Cr: 0.5% -0.8%, Mo: 0.05-0.08 percent of Ti, 0.01-0.03 percent of Ti and the balance of iron;
step six: plating a corrosion-resistant layer, plating a corrosion-resistant layer on the cut raw material by adopting an electrophoresis method, wherein the raw material of the corrosion-resistant layer consists of Ni, Ho, In and Zn, and the raw material of the corrosion-resistant layer comprises the following components In corresponding mass ratio: 5-10:1-3:1-3: 10-20;
step seven: molding, namely, preparing the raw materials into a required shape by extrusion molding; the extrusion molding is carried out at a speed of 5-10 mm/s;
step eight: performing edge machining, namely performing finish machining on the edge of the raw material by using a machine tool;
step nine: drilling, milling, punching, reaming or spot facing the processed raw materials;
step ten: processing a friction surface, namely processing by sand blasting, shot blasting and grinding by a sand turbine;
step eleven: processing a pipe ball, namely processing partial components;
step twelve: assembling, namely assembling the components into an assembly and then assembling;
step thirteen: quality inspection, which is to detect the quality of the product;
fourteen steps: and (5) delivering the packaged product out of the warehouse by using a transport vehicle.
In a preferred embodiment of the invention, the material selection is to select steel, welding material, coating material and fasteners for use in steel structures that meet the design requirements and specifications of existing standards.
In a preferred embodiment of the invention, the lofting prepares the material of a sample plate and a sample rod which are made of sheet iron and small flat steel for workers, and parts with different specifications and different materials are respectively numbered when the parts are numbered, and the parts are sequentially numbered according to the principle of first big and then small.
In a preferred embodiment of the present invention, the cutting comprises the following steps:
the method comprises the following steps: carrying out scribing operation on the raw materials, and placing the steel structure raw materials subjected to blanking scribing on a proper cutting table according to the processing position for processing;
step two: fixing the workpiece on the cutting table, and processing the position, which is near the cut and is extruded and bent due to shearing force, on a numerical control machine by milling, planing or grinding by using a grinding wheel;
step three: cutting the cutting head according to the scribing sequence
Step four: and correcting the cut workpiece.
In a preferred embodiment of the present invention, the correction is performed by using cold correction and flame correction, the cold correction is performed by using mechanical force such as a flange leveler, a stretcher, an oil press, and a press, and the heating method for the hot correction includes three heating methods, i.e., spot heating, linear heating, and triangular heating.
In a preferred embodiment of the invention, the forming uses hot forming and cold forming.
In a preferred embodiment of the present invention, the method for processing the edge mainly includes: edge shoveling, edge planing, edge milling, carbon arc gouging, gas cutting and beveling machine machining.
In a preferred embodiment of the present invention, the method for making the hole comprises: drilling, hole milling, punching, reaming or spot facing, wherein the friction surface processing can be used for processing the high-strength bolt connection friction surface by adopting methods such as sand blasting, shot blasting, grinding by a sand turbine and the like, and the pipe ball processing can be used for processing the prize drawing requirements such as rod pieces, bolt balls, conical heads, sealing plates, hollow balls and the like.
In a preferred embodiment of the invention, the assembling comprises the steps of:
the method comprises the following steps: before assembly, workers must be familiar with construction drawings of components and related technical requirements and review the quality of parts needing to be assembled according to the requirements of the construction drawings;
step two: firstly, assembling basic components of a steel structure according to a drawing, placing two groups of longitudinal beams on two sides of the top of a ground cross beam, lifting the other group of the longitudinal beams to the tops of the longitudinal beams by using a lifting machine, and assembling to enable the cross beams and the longitudinal beams to form a closed structure;
step three: assembling the small parts into parts, and assembling the assembled parts and the components;
step four: and (5) polishing, inspecting and warehousing the assembled workpieces.
Preferably, the parts, semi-finished products and assembly parts which are coated with the anticorrosive paint during quality inspection need to be prevented from being collided, if the parts, the semi-finished products and the assembly parts are collided, the parts and the assembly parts are repaired by the anticorrosive paint, and a protective layer is connected to the outer side of the products during ex-warehouse.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the steel structure is plated with the corrosion-resistant layer by adopting the electrophoresis technology, and the raw materials of the corrosion-resistant layer consist of Ni, Ho, In and Zn, so that the corrosion resistance of the steel structure can be obviously improved, and the service life of the steel structure is prolonged.
2. According to the invention, the wear-resistant layer is welded on the surface of the raw material, so that the wear resistance and the strength of the steel structure can be improved, and the used wear-resistant layer is low in material cost.
3. According to the invention, through the arrangement of the underline, the processing table, the cutting head and the numerical control machine tool, when the workpiece is cut, a worker can cut the workpiece according to the guidance of the underline, so that the damage to the production of the workpiece caused by cutting errors is reduced, and the position near the cut, which is extruded and bent due to shearing force, is processed by milling, planing or grinding wheel grinding in the numerical control technology, so that the influence of the shearing force of a cut accessory on the production of the workpiece is reduced.
4. According to the invention, through the arrangement of the lifting machine, the cross beams and the longitudinal beams, two groups of longitudinal beams are placed on two sides of the top of the ground cross beam, and the other group of cross beams are lifted to the tops of the longitudinal beams by the lifting machine for assembly, so that the cross beams and the longitudinal beams form a closed structure; then the small parts are assembled to form parts, and the assembled parts are assembled with the components, so that the assembly efficiency is improved, and the production efficiency of the steel structure is improved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a method for manufacturing a multifunctional steel structure includes the following steps:
the method comprises the following steps: selecting materials, namely selecting high-quality raw materials for manufacturing products;
step two: lofting, and placing a proper sample plate and a sample rod for workers to use;
step three: material marking, namely classifying, marking and labeling raw materials with different sizes;
step four: cutting, namely processing the raw materials into proper size and shape;
step five: welding a wear-resistant layer, wherein the wear-resistant layer is welded on the surface of a raw material, and the wear-resistant layer comprises the following components in percentage by mass: c: 0.35%, Si: 0.25%, Mn: 0.1%, Cr: 0.6%, Mo: 0.06 percent, 0.025 percent of Ti and the balance of iron;
step six: plating a corrosion-resistant layer, plating a layer of corrosion-resistant layer on the cut raw materials by adopting an electrophoresis method, wherein the corrosion-resistant layer comprises the following raw materials in percentage by mass: 8:2:3:15 of Ni, Ho, In and Zn;
step seven: molding, namely, preparing the raw materials into a required shape by extrusion molding; the extrusion forming is carried out at a speed of 5 mm/s;
step six: performing edge machining, namely performing finish machining on the edge of the raw material by using a machine tool;
step seven: drilling, milling, punching, reaming or spot facing the processed raw materials;
step eight: processing a friction surface, namely processing by sand blasting, shot blasting and grinding by a sand turbine;
step nine: processing a pipe ball, namely processing partial components;
step ten: assembling, namely assembling the components into an assembly and then assembling;
step eleven: quality inspection, which is to detect the quality of the product;
step twelve: and (5) delivering the packaged product out of the warehouse by using a transport vehicle.
According to the invention, through the arrangement of the underline, the processing table, the cutting head and the numerical control machine, the damage to workpiece production caused by cutting errors is reduced, and through the arrangement of the hoister, the cross beam and the longitudinal beam, the assembly efficiency is improved, and the production efficiency of a steel structure is improved. .
Example 1
In the preferred embodiment of the method for manufacturing the multifunctional steel structure, steel, welding materials, coating materials and fasteners used for the steel structure meeting the design requirements and the regulations of the current standard are selected.
In the embodiment, the raw materials are selected, except for the factory quality certificate of a production plant, and are subjected to on-site witness sampling, sample sending, inspection and acceptance according to contract requirements and relevant current standards under the witnesses of the first party and the supervision, inspection records are made, and inspection reports are provided for the first party and the supervision so as to ensure the safety of the use of the raw materials.
Example 2
As a preferred embodiment of the manufacturing method of the multifunctional steel structure, the materials of a sample plate and a sample rod which are composed of sheet iron and small flat steel are prepared for the use of workers in lofting, and parts with different specifications and different materials are respectively numbered when being numbered, and are sequentially numbered according to the principle of first big and then small.
Put appearance and material should reserve the machining allowance that shrinkage (including on-the-spot welding shrinkage) and cutting, mill needs such as end in this embodiment: milling end allowance: each side of the sheared and processed material is generally added with 3-4 mm, and each side of the sheared and processed material is added with 4-5 mm; cutting allowance: the width of an automatic gas cutting slot is 3mm, the width of a manual gas cutting slot is 4mm, the welding shrinkage is given by the process according to the structural characteristics of components, mainly stressed components and components needing to be bent are taken according to the direction specified by the process during material marking, and the outer side of the bent component is free from punching points and scar defects.
Example 3
As a preferred embodiment of the manufacturing method of the multifunctional steel structure, the method comprises the following steps during cutting:
the method comprises the following steps: carrying out scribing operation on the raw materials, and placing the steel structure raw materials subjected to blanking scribing on a proper cutting table according to the processing position for processing;
step two: fixing the workpiece on the cutting table, and processing the position, which is near the cut and is extruded and bent due to shearing force, on a numerical control machine by milling, planing or grinding by using a grinding wheel;
step three: cutting the cutting head according to the scribing sequence
Step four: and correcting the cut workpiece.
In the embodiment, when a plurality of parts are arranged on a steel plate and a plurality of crossed shearing lines are arranged, a reasonable shearing program is arranged in advance and then shearing is carried out, and the bending deformation of the sheared material needs to be corrected; the shearing surface is rough or has burrs, and the shearing surface needs to be polished and polished.
Example 4
In a preferred embodiment of the method for manufacturing a multifunctional steel structure according to the present invention, cold straightening and flame straightening are used for the straightening, the cold straightening is performed by using mechanical force such as a flange leveler, a spreader, an oil press, and a press, and the heating method for the hot straightening includes three heating methods, i.e., spot heating, linear heating, and triangular heating.
In the embodiment, the heating temperature for thermal straightening of the low-carbon steel and the common low-alloy steel is generally 600-900 ℃, and 800-900 ℃ is an ideal temperature for thermoplastic deformation, but not more than 900 ℃, and the common low-alloy steel is slowly cooled after being heated and straightened.
Example 5
In a preferred embodiment of the method for manufacturing a multifunctional steel structure of the present invention, the forming uses hot forming and cold forming.
In the embodiment, the hot-worked steel is low-carbon steel which is generally 1000-1100 ℃, the hot-working termination temperature is not lower than 700 ℃, the heating temperature is 500-550 ℃, and the cold-worked steel is processed and manufactured at normal temperature and is processed by using mechanical equipment and special tools.
Example 6
As the preferred embodiment of the manufacturing method of the multifunctional steel structure, the edge processing method mainly comprises the following steps: edge shoveling, edge planing, edge milling, carbon arc gouging, gas cutting and beveling machine machining.
In the gas cutting part in the embodiment, when the influence area needs to be eliminated for edge processing, the minimum processing allowance is 2.0 mm; the depth of the machined edge can ensure that the surface defects can be removed, but the depth can not be less than 2.0mm, the machined surface has no damage or cracks, and grinding traces can follow the edge when the grinding wheel is machined; the edges of the parts of the carbon structural steel are manually cut, and the surfaces of the parts of the carbon structural steel are cleaned and cannot have unevenness of more than 1.0 mm; the end supporting edge of the member needs to be planed and tightly supported, the accuracy of the section of the end of the member is high, and the edge is planed or milled no matter what method is used for cutting and what steel is used for manufacturing the member.
Example 7
In a preferred embodiment of the method for manufacturing a multifunctional steel structure according to the present invention, the method for manufacturing a hole includes: drilling, hole milling, punching, reaming or spot facing, wherein the friction surface processing can be used for processing the high-strength bolt connection friction surface by adopting methods such as sand blasting, shot blasting, grinding by a sand turbine and the like, and the pipe ball processing can be used for processing the prize drawing requirements such as rod pieces, bolt balls, conical heads, sealing plates, hollow balls and the like.
In the embodiment, before drilling, a drill bit needs to be ground, and the cutting allowance needs to be reasonably selected; the manufactured bolt hole is in a right cylindrical shape and is vertical to the surface of the steel at the position, the inclination is less than 1/20, the periphery of the hole is free from burrs, cracks, bellmouths or concave-convex marks, and the cutting is cleaned; drilling is preferred for component drilling, allowing punching to be used when certain material qualities, thicknesses and hole diameters are demonstrated that do not cause brittleness after punching.
Example 8
As a preferred embodiment of the manufacturing method of the multifunctional steel structure, the assembly comprises the following steps:
the method comprises the following steps: before assembly, workers must be familiar with construction drawings of components and related technical requirements and review the quality of parts needing to be assembled according to the requirements of the construction drawings;
step two: firstly, assembling basic components of a steel structure according to a drawing, placing two groups of longitudinal beams on two sides of the top of a ground cross beam, lifting the other group of the longitudinal beams to the tops of the longitudinal beams by using a lifting machine, and assembling to enable the cross beams and the longitudinal beams to form a closed structure;
step three: assembling the small parts into parts, and assembling the assembled parts and the components;
step four: and (5) polishing, inspecting and warehousing the assembled workpieces.
In the embodiment, when the workpiece is assembled, the friction surface is firstly processed, the high-strength bolt connection friction surface can be processed by adopting methods such as sand blasting, shot blasting, grinding by a sand turbine and the like, after the first group of components are assembled, the components need to be comprehensively inspected by a quality inspection department, and after the components are inspected to be qualified, the components can be continuously assembled.
Example 9
As a preferred embodiment of the manufacturing method of the multifunctional steel structure, the parts, semi-finished products and assembly parts coated with the anticorrosive paint during quality inspection need to be prevented from being collided, if the parts are collided, the parts are repaired by the anticorrosive paint, and when the parts are taken out of a warehouse, the outer side of the products is connected with a protective layer.
In the embodiment, the treated friction surface should take oil stain prevention and damage protection measures, and the edge-processed groove needs to be coated with a protective film and is not collided; the parts are corrected and formed, and the assembled semi-finished products are stacked, so that the cushion points and the stacking quantity are reasonable, the bending deformation is prevented, and the electric leakage protection measures are taken for the electric equipment to prevent electric shock.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A manufacturing method of a multifunctional steel structure is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: selecting materials, namely selecting high-quality raw materials for manufacturing products;
step two: lofting, and placing a proper sample plate and a sample rod for workers to use;
step three: material marking, namely classifying, marking and labeling raw materials with different sizes;
step four: cutting, namely processing the raw materials into proper size and shape;
step five: welding a wear-resistant layer, wherein the wear-resistant layer is welded on the surface of a raw material, and the wear-resistant layer comprises the following components in percentage by mass: c: 0.3-0.5%, Si: 0.15-0.35%, Mn: 0.05-0.15%, Cr: 0.5% -0.8%, Mo: 0.05-0.08 percent of Ti, 0.01-0.03 percent of Ti and the balance of iron;
step six: plating a corrosion-resistant layer, plating a corrosion-resistant layer on the cut raw material by adopting an electrophoresis method, wherein the raw material of the corrosion-resistant layer consists of Ni, Ho, In and Zn, and the raw material of the corrosion-resistant layer comprises the following components In corresponding mass ratio: 5-10:1-3:1-3: 10-20;
step seven: molding, namely, preparing the raw materials into a required shape by extrusion molding; the extrusion molding is carried out at a speed of 5-10 mm/s;
step eight: performing edge machining, namely performing finish machining on the edge of the raw material by using a machine tool;
step nine: drilling, milling, punching, reaming or spot facing the processed raw materials;
step ten: processing a friction surface, namely processing by sand blasting, shot blasting and grinding by a sand turbine;
step eleven: processing a pipe ball, namely processing partial components;
step twelve: assembling, namely assembling the components into an assembly and then assembling;
step thirteen: quality inspection, which is to detect the quality of the product;
fourteen steps: and (5) delivering the packaged product out of the warehouse by using a transport vehicle.
2. The manufacturing method of the multifunctional steel structure as claimed in claim 1, wherein the manufacturing method comprises the following steps: and selecting steel, welding materials, coating materials and fasteners used for the steel structure according with the design requirements and the regulations of the current standard.
3. The manufacturing method of the multifunctional steel structure as claimed in claim 1, wherein the manufacturing method comprises the following steps: the lofting preparation is used for workers to use the materials of a sample plate and a sample rod which are composed of sheet iron and small flat steel, parts with different specifications and materials are respectively numbered during material numbering, and the materials are sequentially numbered according to the principle of first big and then small.
4. The manufacturing method of the multifunctional steel structure as claimed in claim 1, wherein the manufacturing method comprises the following steps: the cutting process comprises the following steps:
the method comprises the following steps: carrying out scribing operation on the raw materials, and placing the steel structure raw materials subjected to blanking scribing on a proper cutting table according to the processing position for processing;
step two: fixing the workpiece on the cutting table, and processing the position, which is near the cut and is extruded and bent due to shearing force, on a numerical control machine by milling, planing or grinding by using a grinding wheel;
step three: cutting the cutting head according to the scribing sequence
Step four: and correcting the cut workpiece.
5. The manufacturing method of the multifunctional steel structure as claimed in claim 1, wherein the manufacturing method comprises the following steps: the correction is carried out by cold correction and flame correction, the cold correction is carried out by using mechanical force of a flange leveler, a straightening machine, an oil press, a press machine and the like, and the heating method of the heat correction comprises point heating, linear heating and triangular heating.
6. The manufacturing method of the multifunctional steel structure as claimed in claim 1, wherein the manufacturing method comprises the following steps: the forming uses hot forming and cold forming.
7. The manufacturing method of the multifunctional steel structure as claimed in claim 1, wherein the manufacturing method comprises the following steps: the processing method for edge processing mainly comprises the following steps: edge shoveling, edge planing, edge milling, carbon arc gouging, gas cutting and beveling machine machining.
8. The manufacturing method of the multifunctional steel structure as claimed in claim 1, wherein the manufacturing method comprises the following steps: the manufacturing method of the hole comprises the following steps: drilling, hole milling, punching, reaming or spot facing, wherein the friction surface processing can be used for processing the high-strength bolt connection friction surface by adopting methods such as sand blasting, shot blasting, grinding by a sand turbine and the like, and the pipe ball processing can be used for processing the prize drawing requirements such as rod pieces, bolt balls, conical heads, sealing plates, hollow balls and the like.
9. The manufacturing method of the multifunctional steel structure as claimed in claim 1, wherein the manufacturing method comprises the following steps: the assembly comprises the following steps:
the method comprises the following steps: before assembly, workers must be familiar with construction drawings of components and related technical requirements and review the quality of parts needing to be assembled according to the requirements of the construction drawings;
step two: firstly, assembling basic components of a steel structure according to a drawing, placing two groups of longitudinal beams on two sides of the top of a ground cross beam, lifting the other group of the longitudinal beams to the tops of the longitudinal beams by using a lifting machine, and assembling to enable the cross beams and the longitudinal beams to form a closed structure;
step three: assembling the small parts into parts, and assembling the assembled parts and the components;
step four: and (5) polishing, inspecting and warehousing the assembled workpieces.
10. The manufacturing method of the multifunctional steel structure as claimed in claim 1, wherein the manufacturing method comprises the following steps: the parts, semi-finished products and assembly parts coated with the anticorrosive paint during quality inspection need to be prevented from being collided, if the parts, the semi-finished products and the assembly parts are collided, the parts and the assembly parts are repaired by the anticorrosive paint, and a protective layer is connected to the outer side of the products during delivery from a warehouse.
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