阅读说明：本技术 一种高效节能的铝合金厢式运输半挂车厢体涂装工艺 (Efficient and energy-saving aluminum alloy van-type transportation semitrailer van body coating process ) 是由 王忠东 郑礼平 李智敏 毕超 于 2021-09-01 设计创作，主要内容包括：本发明一种高效节能的铝合金厢式运输半挂车厢体涂装工艺,包括以下步骤：S1：对经过前处理后的半挂车厢体进行喷涂：采用包含丙烯酸聚氨酯面漆的油漆；使半挂车厢体处于恒温环境中并处于水平状态,根据预设厚度设定机器人的单次喷涂量为550cc/min～650cc/min、喷漆距离为180mm～250mm、机器人的喷枪移动速度为0.6m/s～0.7m/s；由两个机器人分别对半挂车厢体进行同步喷漆；S2：对漆面烘干处理：在调节式烘干室中进行烘干,时间6min～8min,温度为75℃～85℃。本发明通过改进油漆材料、喷漆参数以及改变喷漆环境条件,达到减少喷漆工序,缩减喷漆时间的效果,提高了喷漆效率。(The invention relates to an efficient and energy-saving aluminum alloy van-type transportation semitrailer van body coating process, which comprises the following steps of: s1: spraying the pretreated semitrailer carriage body: applying a paint comprising an acrylic polyurethane topcoat; enabling the semi-trailer carriage to be in a constant temperature environment and in a horizontal state, setting the single spraying amount of the robot to be 550-650 cc/min, the spraying distance to be 180-250 mm and the moving speed of a spray gun of the robot to be 0.6-0.7 m/s according to the preset thickness; synchronously spraying paint on the semi-trailer carriage by two robots respectively; s2: drying the paint surface: drying in an adjustable drying chamber for 6-8 min at 75-85 ℃. According to the invention, by improving paint materials and paint spraying parameters and changing paint spraying environmental conditions, the effects of reducing paint spraying processes and paint spraying time are achieved, and the paint spraying efficiency is improved.)

1. An efficient and energy-saving aluminum alloy van-type transportation semitrailer van body coating process is characterized by comprising the following steps:

s1: spraying the pretreated semitrailer carriage body: applying a paint comprising an acrylic polyurethane topcoat;

enabling the semi-trailer carriage to be in a constant temperature environment and in a horizontal state, setting the single spraying amount of the robot to be 550-650 cc/min, the spraying distance to be 180-250 mm and the moving speed of a spray gun of the robot to be 0.6-0.7 m/s according to the preset thickness;

synchronously spraying paint on the semi-trailer carriage by two robots respectively;

s2: drying the paint surface: drying in an adjustable drying chamber for 6-8 min at 75-85 ℃.

2. The efficient and energy-saving aluminum alloy van transportation semitrailer van body coating process according to claim 1, wherein the step of S1 is preceded by the following steps:

s01: putty coating is carried out on the uneven part of the semi-trailer compartment body;

s02: polishing the surface of the semi-trailer compartment body;

s03: and cleaning the surface of the semi-trailer compartment.

3. The high-efficiency energy-saving aluminum alloy van-type transportation semitrailer van body coating process according to claim 2, wherein the step S01 is implemented by using sheet metal putty matched with acrylic polyurethane finish paint to putty the uneven part of the semitrailer van body.

4. The process for coating the carriage body of the high-efficiency energy-saving aluminum alloy carriage type transportation semitrailer as claimed in claim 2, wherein the step S02 is implemented by manually sanding the carriage body with sand paper, so that the surface of the carriage body of the semitrailer reaches St3 level.

5. The process for coating the carriage body of the high-efficiency energy-saving aluminum alloy carriage type transportation semitrailer according to claim 2, wherein the step S03 is to remove oil stains on the surface of the carriage body of the semitrailer by using an oil removal agent.

6. The process for coating the carriage body of the aluminum alloy carriage type transportation semitrailer with high efficiency and energy conservation as claimed in claim 1, wherein the preset thickness in the step S1 is 35-45 μm.

7. The process for coating the carriage body of the aluminum alloy carriage type transportation semitrailer with high efficiency and energy conservation as claimed in claim 1, wherein the specific parameters of S2 are drying in an adjustable drying chamber for 8min at 80 ℃.

8. The high-efficiency energy-saving aluminum alloy van transportation semitrailer van body coating process according to claim 1, wherein the paint for spraying in the S1 comprises the following components: the paint comprises a finish paint, a diluent and a curing agent, wherein the proportion of a mixture of the finish paint and the diluent to the curing agent in the paint is 3-5.5.

9. The process for coating the carriage of the high-efficiency energy-saving aluminum alloy carriage type transportation semitrailer according to claim 8, wherein the content of cured substances in the paint is not less than 75%.

10. The efficient and energy-saving aluminum alloy van-type transportation semitrailer van body coating process according to claim 8, wherein a leveling agent is further added to the paint for spraying in the step S1, and the proportion of the leveling agent in the paint is 0.1-0.3%.

Technical Field

The invention relates to the technical field of coating, in particular to a high-efficiency and energy-saving coating process for a carriage body of an aluminum alloy carriage type transport semitrailer.

Background

The semi-trailer carriage is widely used as a carrier in the freight industry, and the semi-trailer carriage is generally required to be coated in the freight industry, so that the surface of the semi-trailer carriage is often required to be painted. In the coating of the semitrailer carriage, the adopted process steps comprise: coating a paint spraying chamber for primer on a semi-trailer compartment; coating the semi-trailer compartment body in a primer drying chamber; thirdly, coating the semi-trailer body in a finish paint spraying room; and fourthly, coating the semi-trailer compartment in a finish paint drying chamber.

The semi-trailer compartment body coating process needs a plurality of coating procedures, and generally needs drying in the coating process, so that the coating can reach the surface drying requirement in a short time. And the surface of the coating can be dried completely only by drying twice, a large amount of energy is consumed in the process, the efficiency is low, the coating consumption is high, and the coating is not suitable for large-scale pull-type production.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the efficient and energy-saving coating process for the carriage body of the aluminum alloy carriage type transport semitrailer is provided, and the coating efficiency of the carriage body of the semitrailer is improved.

In order to solve the technical problems, the invention adopts the technical scheme that:

an efficient and energy-saving aluminum alloy van-type transportation semitrailer van body coating process comprises the following steps:

s1: spraying the pretreated semitrailer carriage body: applying a paint comprising an acrylic polyurethane topcoat;

enabling the semi-trailer carriage to be in a constant temperature environment and in a horizontal state, setting the single spraying amount of the robot to be 550-650 cc/min, the spraying distance to be 180-250 mm and the moving speed of the spray gun to be 0.6-0.7 m/s according to the preset thickness;

synchronously spraying paint on the semi-trailer carriage by two robots respectively;

s2: drying the paint surface: drying in an adjustable drying chamber for 6-8 min at 75-85 ℃.

The invention has the beneficial effects that: the paint containing the acrylic polyurethane finish paint is adopted to replace the existing paint, and the paint containing the acrylic polyurethane finish paint has high viscosity and higher paint adhesion than the conventional polyurethane finish paint, so that the paint can be well coated on the surface of a semitrailer compartment even under the condition of not spraying a primer, and further, the primer coating process in the existing coating process is simplified, so that the paint can be directly dried after one paint spraying process is carried out. The spraying process is carried out in a constant temperature environment, the spraying parameters of the robot are set according to the preset thickness, and the thickness of the paint surface can reach the required thickness value only by carrying out one-time spraying. According to the invention, through adjusting paint components, adjusting the painting parameters of the robot according to the preset thickness and painting in a constant temperature environment, the effects of reducing the painting process and shortening the painting time are realized through the common cooperation of the steps, and the purpose of improving the painting efficiency is achieved.

Drawings

FIG. 1 is a flow chart of a high-efficiency energy-saving coating process for a carriage body of an aluminum alloy carriage type transport semitrailer.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1, a high-efficiency energy-saving coating process for a carriage body of an aluminum alloy carriage type transport semitrailer includes the following steps:

s1: spraying the pretreated semitrailer carriage body: applying a paint comprising an acrylic polyurethane topcoat;

enabling the semi-trailer carriage to be in a constant temperature environment and in a horizontal state, setting the single spraying amount of the robot to be 550-650 cc/min, the spraying distance to be 180-250 mm and the moving speed of a spray gun of the robot to be 0.6-0.7 m/s according to the preset thickness;

synchronously spraying paint on the semi-trailer carriage by two robots respectively;

s2: drying the paint surface: drying in an adjustable drying chamber for 6-8 min at 75-85 ℃.

The working principle of the invention is as follows: the paint components are changed, the paint spraying parameters of the robot are adjusted according to the preset thickness, and the paint is sprayed in a constant temperature environment, so that the common matching of all the steps is realized, the direct drying after one spraying process is realized, the coating process is reduced, and the coating time is further shortened.

From the above description, the beneficial effects of the present invention are: the paint containing the acrylic polyurethane finish paint is adopted to replace the existing paint, and the paint containing the acrylic polyurethane finish paint has high viscosity, so that the paint can be well hung on the surface of a semitrailer compartment even under the condition of not spraying a primer, and further, the primer coating process in the existing coating process is simplified, so that the paint can be directly dried after a paint spraying process is carried out. The spraying process is carried out in a constant temperature environment, the spraying parameters of the robot are set according to the preset thickness, and the thickness of the paint surface can reach the required thickness value only by carrying out one-time spraying. According to the invention, through changing paint components, adjusting the painting parameters of the robot according to the preset thickness and painting in a constant temperature environment, the effects of reducing the painting process and shortening the painting time are realized through the common cooperation of the steps, and the purpose of improving the painting efficiency is achieved.

Further, the step S1 is preceded by the steps of:

s01: putty coating is carried out on the uneven part of the semi-trailer compartment body;

s02: polishing the surface of the semi-trailer compartment body;

s03: and cleaning the surface of the semi-trailer compartment.

Further, the concrete step of S01 is to putty-coating the uneven part of the semi-trailer compartment body with sheet metal putty adapted with acrylic polyurethane finish.

According to the description, the surface of the semi-trailer carriage body is not flat, so that the flatness of the surface of the semi-trailer carriage body is improved, the appearance is more attractive, and meanwhile, the follow-up polishing is facilitated.

Further, the specific step of S02 is to manually polish the surface of the semi-trailer body with sandpaper so that the surface of the semi-trailer body reaches St3 level.

From the above description, the surface of the semi-trailer compartment body is polished to improve the roughness of the surface of the semi-trailer compartment body so as to improve the adhesion of the finish paint.

Further, the specific step of S03 is to perform degreasing treatment on the surface of the semi-trailer compartment with a degreasing agent.

From the above description, degreasing can improve the adhesion of paint on the surface of the semi-trailer carriage.

Further, the preset thickness in S1 is 35 μm to 45 μm.

Further, the specific parameters of S2 are drying in a regulated drying chamber for 8min at a temperature of 80 ℃.

Further, the paint for spraying in S1 comprises the following components: the paint comprises a finish paint, a diluent and a curing agent, wherein the proportion of a mixture of the finish paint and the diluent to the curing agent in the paint is 3-5.5.

Further, the content of the cured product in the paint is not less than 75%.

According to the description, the content of the cured substances in the paint is not lower than 75%, compared with the traditional paint, the viscosity of the paint can be improved, the adhesion of the paint on the surface of a semitrailer compartment body is improved, the paint is ensured not to sag, so that the paint can reach the surface adhesion (without paint stripping) of an aluminum alloy compartment body required by the original primer on the premise of not spraying the primer, the working efficiency can be improved due to high solid content, the required paint film thickness can be reached in a short time, the surface drying time of contact with air is reduced, and the adhesion is improved.

Furthermore, a leveling agent is added into the paint for spraying in the S1, and the proportion of the leveling agent in the paint is 0.1-0.3%.

As is apparent from the above description, leveling agents are added to paints for preventing the occurrence of paint film defects.

Comparative example

The paint for spraying comprises the following components: the paint comprises a finish paint, a diluent, a curing agent and a flatting agent, wherein the proportion of a mixture of the finish paint and the diluent to the curing agent in the paint is 17: 83, the proportion of the flatting agent in the paint is 0.2 percent. The finishing paint is composed of acrylic resin, an auxiliary agent, a pigment and a solvent, and is an existing conventional acrylic finishing paint.

Example one

An efficient and energy-saving aluminum alloy van-type transportation semitrailer van body coating process comprises the following steps:

s01: performing putty coating on the uneven part of the semi-trailer compartment body, wherein the specific steps are to perform putty coating on the uneven part of the semi-trailer compartment body by adopting sheet metal putty matched with acrylic polyurethane finish paint; in particular, putty coating is carried out on the uneven part of the semi-trailer carriage body, the welding seam and the gap part smaller than 0.8mm on the wall plate in the step. Preferably, the sheet metal putty is conductive atomic ash sheet metal putty.

S02: the surface of the semi-trailer compartment body is polished, and the specific steps are that sand paper is adopted to manually polish the surface of the semi-trailer compartment body to reach St3 level; wherein, the standard of the polishing process refers to GB 8923-89;

s03: cleaning the surface of the semi-trailer compartment body, and specifically, performing degreasing treatment on the surface of the semi-trailer compartment body by adopting a degreasing agent; wherein the degreasing treatment standard refers to GB/T13312-1991 or GB/T13312-1991.

S1: spraying the pretreated semitrailer carriage body: applying a paint comprising an acrylic polyurethane topcoat; enabling the semi-trailer carriage to be in a constant temperature environment of 25 ℃ and in a horizontal state, setting the single spraying amount of the robot to be 550cc/min, the spraying distance to be 180mm and the moving speed of a spray gun of the robot to be 0.64m/s according to the preset thickness; synchronously spraying paint on the semi-trailer carriage by two robots respectively; wherein the predetermined thickness is 35 μm.

S2: drying the paint surface: drying is carried out in the adjustable drying chamber for 8min at the temperature of 80 ℃ so as to ensure that the paint is sufficiently dried, and the specific drying time and temperature can be adjusted according to seasonal changes to monitor the temperature changes in real time.

The paint for spraying in the S1 comprises the following components: the paint comprises a finish paint, a diluent, a curing agent and a flatting agent, wherein the proportion of a mixture of the finish paint and the diluent to the curing agent in the paint is 20:80, and the proportion of the flatting agent in the paint is 0.2%. Preferably, the paint has a cured content of 75%. The leveling agent is an SRE-3251 high-smoothness anti-scraping leveling agent, the diluent is an NL-finish diluent, the type of the diluent is an X-2 slow-drying diluent, the curing agent is an NL-finish curing agent, and specifically, the curing agent is a curing agent of phenolic resin furan resin; the finish paint is composed of hydroxyl acrylic resin, pigment, an auxiliary agent, a solvent and propylene glycol methyl ether acetate, wherein the volume proportion of the hydroxyl acrylic resin is 56%, and the volume proportion of the propylene glycol methyl ether acetate is 6%.

In this embodiment, the constant temperature control of the paint spray booth can keep the best spraying temperature and humidity, and the semi-trailer carriage body is coated in the constant temperature paint spray booth with the temperature of 25 ℃ -35 ℃, so that the paint surface is more beautiful, and chloride corrosion is avoided.

Example two

An efficient and energy-saving aluminum alloy van-type transportation semitrailer van body coating process comprises the following steps:

s01: performing putty coating on the uneven part of the semi-trailer compartment body, wherein the specific steps are to perform putty coating on the uneven part of the semi-trailer compartment body by adopting sheet metal putty matched with acrylic polyurethane finish paint; in particular, putty coating is carried out on the uneven part of the semi-trailer carriage body, the welding seam and the gap part smaller than 0.8mm on the wall plate in the step. Preferably, the sheet metal putty is conductive atomic ash sheet metal putty.

S02: the surface of the semi-trailer compartment body is polished, and the specific steps are that sand paper is adopted to manually polish the surface of the semi-trailer compartment body to reach St3 level; wherein, the standard of the polishing process refers to GB 8923-89;

s03: cleaning the surface of the semi-trailer compartment body, and specifically, performing degreasing treatment on the surface of the semi-trailer compartment body by adopting a degreasing agent; wherein the degreasing treatment standard refers to GB/T13312-1991 or GB/T13312-1991.

S1: spraying the pretreated semitrailer carriage body: applying a paint comprising an acrylic polyurethane topcoat; enabling the semi-trailer carriage body to be in a constant temperature environment of 25-35 ℃ and in a horizontal state, and setting the single spraying amount of the robot to be 600cc/min, the spraying distance to be 215mm and the moving speed of a spray gun of the robot to be 0.64m/s according to the preset thickness; synchronously spraying paint on the semi-trailer carriage by two robots respectively; wherein the predetermined thickness is 40 μm.

S2: drying the paint surface: drying is carried out in the adjustable drying chamber for 8min at the temperature of 80 ℃ so as to ensure that the paint is sufficiently dried, and the specific drying time and temperature can be adjusted according to seasonal changes to monitor the temperature changes in real time.

The paint for spraying in the S1 comprises the following components: the paint comprises a finish paint, a diluent, a curing agent and a leveling agent, wherein the proportion of a mixture of the finish paint and the diluent to the curing agent in the paint is 14:86, and the proportion of the leveling agent in the paint is 0.2%. Preferably, the paint has a cured content of 75%. The leveling agent is an SRE-3251 high-smoothness anti-scraping leveling agent, the diluent is an NL-finish diluent, the type of the diluent is an X-2 slow-drying diluent, the curing agent is an NL-finish curing agent, and the curing agent is specifically a curing agent of phenolic resin furan resin; the finish paint is composed of hydroxyl acrylic resin, pigment, an auxiliary agent, a solvent and propylene glycol methyl ether acetate, wherein the mass proportion of the hydroxyl acrylic resin is 56%, and the mass proportion of the propylene glycol methyl ether acetate is 6%.

In this embodiment, the constant temperature control of the paint spray booth can keep the best spraying temperature and humidity, and the semi-trailer carriage body is coated in the constant temperature paint spray booth with the temperature of 25 ℃ -35 ℃, so that the paint surface is more beautiful, and chloride corrosion is avoided.

EXAMPLE III

An efficient and energy-saving aluminum alloy van-type transportation semitrailer van body coating process comprises the following steps:

s01: performing putty coating on the uneven part of the semi-trailer compartment body, wherein the specific steps are to perform putty coating on the uneven part of the semi-trailer compartment body by adopting sheet metal putty matched with acrylic polyurethane finish paint; in particular, putty coating is carried out on the uneven part of the semi-trailer carriage body, the welding seam and the gap part smaller than 0.8mm on the wall plate in the step. Preferably, the sheet metal putty is conductive atomic ash sheet metal putty.

S02: the surface of the semi-trailer compartment body is polished, and the specific steps are that sand paper is adopted to manually polish the surface of the semi-trailer compartment body to reach St3 level; wherein, the standard of the polishing process refers to GB 8923-89;

s03: cleaning the surface of the semi-trailer compartment body, and specifically, performing degreasing treatment on the surface of the semi-trailer compartment body by adopting a degreasing agent; wherein the degreasing treatment standard refers to GB/T13312-1991 or GB/T13312-1991.

S1: spraying the pretreated semitrailer carriage body: applying a paint comprising an acrylic polyurethane topcoat; enabling the semi-trailer carriage body to be in a constant temperature environment of 25-35 ℃ and in a horizontal state, and setting the single spraying amount of the robot to be 650cc/min, the spraying distance to be 250mm and the moving speed of a spray gun of the robot to be 0.64m/s according to the preset thickness; synchronously spraying paint on the semi-trailer carriage by two robots respectively; wherein the predetermined thickness is 45 μm.

S2: drying the paint surface: drying is carried out in the adjustable drying chamber for 8min at the temperature of 80 ℃ so as to ensure that the paint is sufficiently dried, and the specific drying time and temperature can be adjusted according to seasonal changes to monitor the temperature changes in real time.

The paint for spraying in the S1 comprises the following components: the paint comprises a finish paint, a diluent, a curing agent and a flatting agent, wherein the proportion of a mixture of the finish paint and the diluent to the curing agent in the paint is 17: 83, the proportion of the flatting agent in the paint is 0.2 percent. Preferably, the paint has a cured content of 75%. The leveling agent is an SRE-3251 high-smoothness anti-scraping leveling agent, the diluent is an NL-finish diluent, the type of the diluent is an X-2 slow-drying diluent, the curing agent is an NL-finish curing agent, specifically, the curing agent is a curing agent of phenolic resin furan resin, and the finish is composed of hydroxyl acrylic resin, pigment, an auxiliary agent, a solvent and propylene glycol methyl ether acetate, wherein the mass ratio of the hydroxyl acrylic resin is 56%, and the mass ratio of the propylene glycol methyl ether acetate is 6%.

In this embodiment, the constant temperature control of the paint spray booth can keep the best spraying temperature and humidity, and the semi-trailer carriage body is coated in the constant temperature paint spray booth with the temperature of 25 ℃ -35 ℃, so that the paint surface is more beautiful, and chloride corrosion is avoided.

The performance tests of the different paints were carried out under the same painting conditions, without spraying the primer, the test results being shown in table 1.

Watch 1

As can be seen from Table 1, the adhesion force of the paint of the first to third examples is greater than that of the comparative example and can reach 0 grade, and the hardness of the paint film after the paint spraying of the first to third examples is greater than that of the comparative example under the condition that the paint film is in the same thickness, namely, the hardness of the paint film after the paint spraying of the second and third examples is added is the largest, and the paint film surface of the paint after the paint spraying of the second example has no migration, so that the paint performance of the second example is the best.

In conclusion, the efficient and energy-saving aluminum alloy van-type transportation semitrailer van body coating process provided by the invention has the advantages that the semitrailer van body is placed in a constant-temperature paint spraying chamber at 25 ℃ for paint spraying, acrylic polyurethane is used as a main component of paint, and paint spraying parameters of a robot are set according to a preset thickness, so that the paint spraying procedures are reduced on the premise of ensuring the qualified paint surface quality, and the aim of improving the paint spraying efficiency is fulfilled. In the traditional spraying process, the primer is coated in order to increase the adhesive force of the finish paint and enable the finish paint to be attached to the primer, and in the invention, the paint components are improved, the adhesive force of the finish paint is greatly improved, and the defect that the finish paint cannot be firmly attached to the surface of the semi-trailer compartment body without spraying the primer in the traditional coating process is overcome.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.