A method for preparing landscape sculpture by hot-bending pipe

Abstract

A method for preparing landscape sculptures by hot-bending pipes, comprising the following steps: obtaining a design model; selecting material pipes according to the design model and hot-bending pipes to obtain spliced ​​bent pipes; splicing the spliced ​​bent pipes on site to obtain primary pipes; and performing rust-proof treatment on the primary pipes. The present application adopts the hot-bending pipe bending method to obtain landscape sculptures, which well avoids the problems caused by the special-shaped steel pipes on site, ensures the construction quality, improves the construction efficiency, and also saves time and manpower and material resources to a great extent.

Description

Technical Field

[0001] The present application relates to a method for preparing landscape sculptures by hot-bending pipes. Background Art

[0002] In the process of garden construction, in order to create various themes, the landscape in the garden often has different forms. It carries the historical value and social value of the garden, which can make visitors feel as if they are there and get straight to the point. For garden designers, this is not just an ordinary garden piece, but also has extraordinary significance for the entire garden. It is the finishing touch. It also creates a place for visitors to stop and watch, talk about the past and the present, which is an important component of the garden landscape and can be called the soul of the garden project.

[0003] In addition to landscapes such as strange rocks, the design of landscapes with local characteristics has also gradually received attention. Jinan is backed by Mount Tai in the east, faces the Yellow River in the north, and is famous for its springs. When designing the landscape, you can choose a curved pipe design that reflects the mountains and springs. The existing curved pipe settings tend to adopt a connection setting similar to that of a water pipe, which is a bit stiff. Therefore, it is necessary to design a smooth and natural, three-dimensional line shape to improve the aesthetics of the landscape. After the curved pipe is bent at a large angle, the structural stability of the curved pipe itself becomes very poor. The existing method mostly adopts the form of a local reinforcement plate, which affects the overall appearance of the landscape. Summary of the invention

[0004] In order to solve the above problems, the present application proposes a method for preparing landscape sculptures by hot-bending pipes, comprising the following steps: obtaining a design model; selecting material pipes according to the design model and hot-bending pipes to obtain spliced ​​pipes; splicing the spliced ​​pipes on site to obtain primary pipes; and performing rust-proof treatment on the primary pipes. The present application adopts the method of hot-bending pipes to obtain landscape sculptures, which effectively avoids the problems caused by the special-shaped steel pipes on site, ensures the construction quality, improves the construction efficiency, and also saves time and manpower and material resources to a great extent.

[0005] Preferably, the hot bending of the pipe is carried out in the following manner:

[0006] Put the pipe into the pipe bending machine, and the heating method is: medium frequency heating, heating frequency 1000Hz, power 800kW; heating temperature: 900-920℃; bending speed is 1500-2000mm / h.

[0007] Preferably, the on-site splicing is carried out in the following manner: CO2 shielded welding is used for welding, and the welding speed is 40-50cm / min; the gas flow rate of CO2 is 8-25L / min; the extension length of the welding wire is 10-20 times the diameter of the welding wire, and the extension length of the welding wire is 8-15mm; ordinary welding, surfacing welding or cast iron repair welding are used according to different welding positions; in ordinary welding, direct current reverse connection is used; in surfacing welding or cast iron repair welding, direct current positive connection is used. The construction method of this application improves the construction efficiency, ensures that the lines of steel structures with different curvatures are orderly and staggered, and can perfectly express the theme of gardening, making visitors feel as if they are on the scene; the sculpture has good construction efficiency, excellent quality, high quality and low cost, and has been well received by owners, design units and the public, and has reaped good social and economic benefits.

[0008] Preferably, the anti-rust treatment adopts an electrostatic spraying anti-corrosion process, including the following process:

[0009] Sandblast the primary pipe to remove rust;

[0010] The primary pipeline after sandblasting and rust removal is electrostatically sprayed with epoxy resin and heated for curing to obtain an anti-corrosion layer.

[0011] Preferably, after the spliced ​​elbow is obtained, if the elbow angle is greater than 90 degrees, a structural reinforcement layer is provided on the surface of the spliced ​​elbow.

[0012] Preferably, the structural reinforcement layer comprises the following raw materials in parts by mass:

[0013] Epoxy resin: 40-50 parts; acrylic resin: 20-30 parts; nano silicon dioxide: 15-20 parts; borax: 5-10 parts; zinc oxide: 5-10 parts; kaolin: 30-40 parts.

[0014] Preferably, it also includes 2-4 parts of titanium oxide.

[0015] Preferably, the structural reinforcement layer is obtained as follows:

[0016] The nano-silicon dioxide, borax, zinc oxide, zinc oxide, kaolin, and titanium oxide are fully mixed to obtain a premix;

[0017] Mixing epoxy resin and acrylic resin to obtain a mixed solution;

[0018] Put the premix and curing agent into the mixed liquid and mix thoroughly to obtain the spraying material;

[0019] Spraying the spray material onto the surface of the spliced ​​elbow to obtain a spray layer;

[0020] The spray coating is heated by a hot air gun to obtain a structural reinforcement layer. This application is based on the characteristics of landscape requirements. When the hot bending pipe is bent, after the bending degree is large, local reinforcement is used to require high reinforcement efficiency, good reinforcement effect, and no obvious seams. It has a good effect of withstanding external impact and is suitable for outdoor landscape layout.

[0021] Preferably, the thickness of the structural reinforcement layer is 0.5-1.5 mm.

[0022] Preferably, the curing agent is an aromatic amine curing agent.

[0023] This application can bring the following beneficial effects:

[0024] 1. This application adopts the method of hot-bending pipe to obtain landscape sculptures, which effectively avoids the problems caused by special-shaped steel pipes on site, ensures construction quality, improves construction efficiency, and saves time, manpower and material resources to a great extent.

[0025] 2. The construction method applied for improves the construction efficiency and ensures that the lines of steel structures with different curvatures are well-proportioned and orderly, which can perfectly express the theme of gardening and make visitors feel as if they are on the scene. The sculpture construction efficiency is good, the quality is excellent, the quality is high, and the cost is low. It has been well received by the owners, design units, and the public, and has achieved good social and economic benefits.

[0026] 3. This application is based on the characteristics of landscape requirements. When the hot-bent pipe is bent, after the bending degree is large, local reinforcement is adopted, which requires high reinforcement efficiency, good reinforcement effect, no obvious seams, and good effect of withstanding external impact, which is suitable for outdoor landscape layout. DETAILED DESCRIPTION

[0027] In order to clearly illustrate the technical features of this solution, this application is elaborated in detail below through specific implementation methods.

[0028] The present application is essentially a method, namely a method for preparing landscape sculptures by hot-bending pipes, comprising the following steps:

[0029] S1. Get the design model;

[0030] The design style is required by the owner. The designer obtains a model of the pipeline composition based on the design style. The model of the pipeline composition is the design model.

[0031] S2. Select material pipes according to the design model and perform hot bending to obtain spliced ​​elbows;

[0032] The hot bending pipe is carried out as follows:

[0033] Put the pipe into the pipe bending machine, and the heating method is: medium frequency heating, heating frequency 1000Hz, power 800kW; heating temperature: 900-920℃; bending speed is 1500-2000mm / h.

[0034] S3. Setting of structural reinforcement layer:

[0035] After the spliced ​​elbow is obtained, if the elbow angle is greater than 90 degrees, a structural reinforcement layer is provided on the surface of the spliced ​​elbow.

[0036] The structural reinforcement layer includes the following raw materials in parts by mass:

[0037] Epoxy resin: 40-50 parts; acrylic resin: 20-30 parts; nano silicon dioxide: 15-20 parts; borax: 5-10 parts; zinc oxide: 5-10 parts; kaolin: 30-40 parts.

[0038] Also includes titanium oxide: 2-4 parts.

[0039] The structural reinforcement layer is obtained as follows:

[0040] The nano-silicon dioxide, borax, zinc oxide, zinc oxide, kaolin, and titanium oxide are fully mixed to obtain a premix;

[0041] Mixing epoxy resin and acrylic resin to obtain a mixed solution;

[0042] Put the premix and curing agent into the mixed liquid and mix thoroughly to obtain the spraying material;

[0043] Spraying the spray material onto the surface of the spliced ​​elbow to obtain a spray layer;

[0044] The spray coating is heated by a hot air gun to obtain a structural reinforcement layer.

[0045] The thickness of the structural reinforcement layer is 0.5-1.5 mm.

[0046] The curing agent is an aromatic amine curing agent.

[0047] S4. Splice the spliced ​​elbows on site to obtain a primary pipeline;

[0048] The on-site splicing is carried out as follows: CO2 shielded welding is used for welding, and the welding speed is 40-50cm / min; the CO2 gas flow rate is 8-25L / min; the extension length of the welding wire is 10-20 times the diameter of the welding wire, and the extension length of the welding wire is 8-15mm; ordinary welding, surfacing welding or cast iron repair welding is used according to different welding positions; when ordinary welding, DC reverse connection is used; when surfacing welding or cast iron repair welding, DC positive connection is used.

[0049] S5. Carry out rust-proof treatment on the primary pipeline.

[0050] The anti-rust treatment adopts an electrostatic spraying anti-corrosion process, including the following processes:

[0051] Sandblast the primary pipeline without structural reinforcement layer to remove rust;

[0052] The primary pipeline after sandblasting and rust removal is electrostatically sprayed with epoxy resin and heated for curing to obtain an anti-corrosion layer.

[0053] In order to demonstrate the effects of hot bending and structural reinforcement, this application uses a Q235 steel pipe with a diameter of 50 mm, a thickness of 3 mm, and a length of 1 m, and then bends the center, and conducts a comparative test in the following manner:

[0054] Embodiment 1:

[0055] S101. Hot bending pipe;

[0056] The hot bending pipe is carried out as follows:

[0057] Put the pipe into the pipe bending machine, and the heating method is: medium frequency heating, heating frequency 1000Hz, power 800kW; heating temperature: 900℃; bending speed is 1500mm / h.

[0058] S102. Setting of structural reinforcement layer:

[0059] After the spliced ​​elbow is obtained, the elbow angle is 135°, and a structural reinforcement layer is set on the surface of the spliced ​​elbow.

[0060] The structural reinforcement layer includes the following raw materials in parts by mass:

[0061] Epoxy resin: 400g; acrylic resin: 200g; nano-silicon dioxide: 150g; borax: 50g; zinc oxide: 50g; kaolin: 300g; titanium oxide: 20g.

[0062] The structural reinforcement layer is obtained as follows:

[0063] The nano-silicon dioxide, borax, zinc oxide, zinc oxide, kaolin, and titanium oxide are fully mixed to obtain a premix;

[0064] Mixing epoxy resin and acrylic resin to obtain a mixed solution;

[0065] The premix and 5% of the premix mass of the aromatic amine curing agent are added into the mixed liquid and mixed thoroughly to obtain a spraying material;

[0066] Spraying the spray material onto the surface of the spliced ​​elbow to obtain a spray layer;

[0067] The spray coating is heated by a hot air gun to obtain a structural reinforcement layer.

[0068] The thickness of the structural reinforcement layer is 0.8 mm.

[0069] Pipe No. 1 was obtained and after 24 hours of maintenance, the pipe was subjected to ±5° reciprocating bending. Cracks appeared after 29 bends and a break occurred after 58 bends.

[0070] Embodiment 2:

[0071] S101. Hot bending pipe;

[0072] The hot bending pipe is carried out as follows:

[0073] Put the pipe into the pipe bending machine, and the heating method is: medium frequency heating, heating frequency is 1000Hz, power is 800kW; heating temperature is: 920℃; bending speed is 2000mm / h.

[0074] S102. Setting of structural reinforcement layer:

[0075] After the spliced ​​elbow is obtained, the elbow angle is 135°, and a structural reinforcement layer is set on the surface of the spliced ​​elbow.

[0076] The structural reinforcement layer includes the following raw materials in parts by mass:

[0077] Epoxy resin: 500g; acrylic resin: 300g; nano-silicon dioxide: 200g; borax: 100g; zinc oxide: 100g; kaolin: 400g; titanium oxide: 40g.

[0078] The structural reinforcement layer is obtained as follows:

[0079] The nano-silicon dioxide, borax, zinc oxide, zinc oxide, kaolin, and titanium oxide are fully mixed to obtain a premix;

[0080] Mixing epoxy resin and acrylic resin to obtain a mixed solution;

[0081] The premix and 5% of the premix mass of the aromatic amine curing agent are added into the mixed liquid and mixed thoroughly to obtain a spraying material;

[0082] Spraying the spray material onto the surface of the spliced ​​elbow to obtain a spray layer;

[0083] The spray coating is heated by a hot air gun to obtain a structural reinforcement layer.

[0084] The thickness of the structural reinforcement layer is 1.1 mm.

[0085] Pipe No. 2 was obtained and after 24 hours of maintenance, the pipe was subjected to ±5° reciprocating bending. Cracks appeared after 35 bends and a break occurred after 62 bends.

[0086] Comparative Example 1:

[0087] S101. Hot bending pipe;

[0088] The hot bending pipe is carried out as follows:

[0089] Put the pipe into the pipe bending machine, and the heating method is: medium frequency heating, heating frequency is 1000Hz, power is 800kW; heating temperature is: 920℃; bending speed is 2000mm / h.

[0090] S102. Setting of structural reinforcement layer:

[0091] After the spliced ​​elbow is obtained, the elbow angle is 135°.

[0092] Pipe No. 3 was obtained. After 24 hours of maintenance, the pipe was subjected to ±5° reciprocating bending. Cracks appeared after 11 bends and a break occurred after 19 bends.

[0093] Comparative Example 2:

[0094] S101. Hot bending pipe;

[0095] The hot bending pipe is carried out as follows:

[0096] Put the pipe into the pipe bending machine, and the heating method is: medium frequency heating, heating frequency is 1000Hz, power is 800kW; heating temperature is: 920℃; bending speed is 2000mm / h.

[0097] S102. Setting of structural reinforcement layer:

[0098] After the spliced ​​elbow is obtained, the elbow angle is 135°, and a structural reinforcement layer is set on the surface of the spliced ​​elbow.

[0099] The structural reinforcement layer includes the following raw materials in parts by mass:

[0100] Epoxy resin: 500g; Acrylic resin: 300g.

[0101] The structural reinforcement layer is obtained as follows:

[0102] Mixing epoxy resin and acrylic resin to obtain a mixed solution;

[0103] Add 5% of the mixed liquid mass of aromatic amine curing agent into the mixed liquid and mix thoroughly to obtain a spraying material;

[0104] Spraying the spray material onto the surface of the spliced ​​elbow to obtain a spray layer;

[0105] The spray coating is heated by a hot air gun to obtain a structural reinforcement layer.

[0106] The thickness of the structural reinforcement layer is 1.2 mm.

[0107] Pipe No. 4 was obtained. After 24 hours of maintenance, the pipe was subjected to ±5° reciprocating bending. Cracks appeared after 15 bends and a break appeared after 34 bends.

[0108] The above embodiments show that after the structure is strengthened, its bending resistance is greatly improved, and it has good stability when subjected to wind impact or external bending in the later stage, and is suitable for use in situations where there is no internal pressure such as exhibitions in scenic spots.

[0109] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A method for preparing landscape sculptures by hot bending pipes, characterized in that: The steps include: Get the design model; Select material pipes according to the design model and perform hot bending to obtain spliced ​​elbows; The spliced ​​elbows are spliced ​​on site to obtain primary pipelines; Treat the primary pipes with rust prevention; The anti-rust treatment adopts an electrostatic spraying anti-corrosion process, including the following processes: Sandblast the primary pipe to remove rust; Electrostatically spray epoxy resin on the primary pipeline after sandblasting and rust removal, and heat and cure to obtain an anti-corrosion layer; The hot bending pipe is carried out as follows: Put the pipe into the pipe bending machine, and the heating method is: medium frequency heating, heating frequency 1000Hz, power 800kW; heating temperature: 900-920℃; bending speed is 1500-2000mm / h; After the spliced ​​elbow is obtained, if the elbow angle is greater than 90 degrees, a structural reinforcement layer is provided on the surface of the spliced ​​elbow; The structural reinforcement layer includes the following raw materials in parts by mass: Epoxy resin: 40-50 parts; acrylic resin: 20-30 parts; nano-silicon dioxide: 15-20 parts; borax: 5-10 parts; zinc oxide: 5-10 parts; kaolin: 30-40 parts; titanium oxide: 2-4 parts; The structural reinforcement layer is obtained as follows: Fully mixing nano silicon dioxide, borax, zinc oxide, kaolin and titanium oxide to obtain a premix; Mixing epoxy resin and acrylic resin to obtain a mixed solution; Put the premix and curing agent into the mixed liquid and mix thoroughly to obtain the spraying material; Spraying the spray material onto the surface of the spliced ​​elbow to obtain a spray layer; The spray coating is heated by a hot air gun to obtain a structural reinforcement layer.

2. The method for preparing landscape sculpture by hot-bending pipe according to claim 1, characterized in that: The on-site splicing is carried out as follows: CO2 shielded welding is used for welding, and the welding speed is 40-50cm / min; the gas flow rate of CO2 is 8-25L / min; the extension length of the welding wire is 10-20 times the diameter of the welding wire, and the extension length of the welding wire is 8-15mm; ordinary welding is used according to different welding positions; during ordinary welding, DC reverse connection is used.

3. The method for preparing landscape sculpture by hot-bending pipe according to claim 1, characterized in that: The thickness of the structural reinforcement layer is 0.5-1.5 mm.

4. The method for preparing landscape sculpture by hot-bending pipe according to claim 1, characterized in that: The curing agent is an aromatic amine curing agent.