Steel-wood desks and chairs electrostatic spraying process and principles and advantages

/in /by

Steel-wood desks and chairs are student desks and chairs with wood as the layout substrate and steel as the skeleton substrate. The more characteristic process is the electrostatic spraying process, which is easy to operate, environmentally friendly, and does not pollute the environment. For example, the painting process will cause the phenomenon of flow, so it has become a commonly used desk and chair for students in modern times. The following desk and chair manufacturers will introduce to you the electrostatic spraying process, process principles and advantages of steel and wood desks and chairs!

1. Electrostatic spraying process of steel and wood desks and chairs

1. Surface pretreatment: mainly degreasing and rust removal, the method is the same as the pretreatment of applying liquid paint.

2. Scrape putty (repair defective products): Scrape conductive putty according to the degree of defects of the workpiece, and smooth it with sandpaper after drying, and then proceed to the next process.

3. Protection (also known as masking): If some parts of the workpiece are not required to be coated, they can be covered with protective glue before preheating to avoid spraying paint.

4. Preheating (thick coating): Generally, preheating is not required. If the coating is required to be thicker, the workpiece can be preheated to 180~20°C, which can increase the thickness of the coating.

AY-D 39
5. Spraying: In a high-voltage electrostatic field, connect the powder spray gun to the negative electrode, and the workpiece is grounded (positive electrode) to form a loop. The powder is sprayed from the spray gun with the help of compressed air, which is negatively charged, and is sprayed on the workpiece according to the principle of opposite sex attraction.

6. Curing: After spraying, the workpiece is sent to a drying room at 180~200°C for heating to solidify the powder.

7. Cleaning: After the coating is cured, remove the protective material and smooth the burrs.

8. Inspection (respray for defective products): Check the coating of the workpiece. Any defect such as missing spray, bumps, needle bubbles, etc., needs to be reworked and resprayed.

Second, the principle of electrostatic spraying of steel and wood desks and chairs

The electrostatic spraying of powder coatings is called plastic spraying, and its principle is to use the phenomenon of corona discharge to make the powder coatings adsorb on the workpiece. The process is: the powder coating is sent to the spray gun by the powder supply system by compressed air gas, and the high voltage generated by the high-voltage electrostatic generator is added to the front of the spray gun. Due to corona discharge, dense electric charges are generated nearby. The powder is sprayed by the gun nozzle. When it exits, it forms charged paint particles, which are attracted to the workpiece with the opposite level of electrostatic force. As the sprayed powder increases, the electric charge accumulates. When it reaches a certain thickness, static electricity is generated. Repulsion does not continue to absorb, so that the entire workpiece obtains a certain thickness of powder coating, and then the powder is melted, leveled, and solidified by heat, that is, a hard coating film is formed on the surface of the workpiece.

Three, steel and wood desks and chairs electrostatic spraying advantages

1. Compared with the traditional spray painting process, electrostatic spraying has significant advantages. It does not need thinner materials, and the construction is non-polluting to the environment and harmless to the human body;

2. The coating has excellent appearance quality, strong adhesion and mechanical strength;

3. The curing time of spraying construction is short, the corrosion resistance and wear resistance of the coating are much higher, and no primer is required;

4. The construction is simple, and the technical requirements for workers are low. Some construction occasions have clearly stated that electrostatic spraying technology must be used;

5. The cost is lower than the painting process, and the flow phenomenon common in the painting process will not appear during the electrostatic powder spraying process.

The above is a detailed introduction to the electrostatic spraying process, process principles and advantages of steel-wood desks and chairs. The electrostatic spraying process of steel-wood desks and chairs is surface pretreatment, scraping putty, protection, preheating, spraying, curing, and cleaning. , Inspection and other steps, the principle is to use the phenomenon of corona discharge to make the powder coating adsorb on the workpiece. This process has the advantages of green pollution-free, simple construction, and short curing time.

How to install the auditorium soft chair? Installation steps method introduction

/in /by

Auditorium chairs are a very common seat in our lives. They are often used in meeting rooms, auditoriums, etc., and even seats in many public areas now use auditorium chairs. More and more people like the auditorium chair. There must be something unique and something worthy of appreciation. Although the types of auditorium chairs are different, the installation methods are still the same. In fact, the introduction to the installation steps of the auditorium chair is still very detailed. As long as we can install it correctly and do a basic test, it will also be beneficial to the long-term application of the auditorium chair. Today, I will introduce how to install the auditorium soft chair and how to install it.

The installation process of the auditorium soft chair is a work with a certain technical content; after the parts of the seat are sent to the installation site, first check whether the parts are complete. The large parts include the chair frame, cushion, backrest, etc., while some small parts are included. The components are the key to the installation. Whether the screws are the size required for the installation is also very important whether the site is a wooden floor or a concrete floor; therefore, on-site installation is also a tedious and technically difficult task.

Multimedia classroom soft chair

1. Install the seat

We need to use screws to install the relevant seats and do points, and then install the armrests on both sides, we must ensure the stability of the installation of the armrests. Because many of the chairs in movie theaters are row-by-row, but have separate armrests, fixing work must be done well.

2. Install the bracket and guard plate

The installation of the bracket and the guard plate in the installation steps of the auditorium chair are very critical, so special attention must be paid to the fixing work. You need to install the bracket on the armrest frame, then you need to use suitable plastic nails to fix it, and then insert the guard plates of the two armrest frames.

3. The backrest link

After completing the other parts of the link, you need to determine the link of the backrest position, and also need to have the anti-skid position fixed. Because the fixed position of each auditorium chair is different, the screws used are also different, so be sure to fix the position of the backrest.

Auditorium chair

4. Fixed on the ground

Because of the different types of auditorium chairs we choose, there will be some differences in the installation steps of the auditorium chairs. Therefore, we must pay special attention to the fixed position. Generally, the position of the tripod can be specified first, or after the assembly of the auditorium chair is completed, the fixing can be carried out, so that a good application effect can be guaranteed, and the fixing can be determined. The stability.

5. Adjust the size and adjustment of the auditorium chair

(1) Test the size of the auditorium chair and repair it, and check whether all of it is tight.

(2) Use 8*55mm screws to fix the foot cover to the ground, and then cover the blind cover.

The above is an explanation of the steps for the installation of the auditorium chair. What needs to be reminded is that in the installation process, in addition to measuring the installation site, drawing lines and punching holes, it also needs the ability to adapt to changes, such as the wooden floor used on the site. The thickness is too thin, should you consider changing to another type of screw, etc.

Precautions for inspection after installation of student desks and chairs

/in /by

news

The use of student desks and chairs in schools is very common. If there are no desks and chairs, students will not be able to study comfortably. Therefore, the infrastructure of desks and chairs is a must. Now many schools will The use of desks and chairs are regularly replaced with new desks and chairs. The replacement of new desks and chairs requires installation. After installation, inspections are required. Students can only use them if safety is ensured. So what are the specific inspections? Today, the editor will come to talk to you about the precautions for the inspection of student desks and chairs after installation. Let’s take a look!

1. Students need to pay attention to the inspection after installation of desks and chairs

1. Pay attention to check the integrity of the exposed face

When installing student desks and chairs, they are also made up of several parts. Then there may be friction and friction during the installation process, which may cause problems, so after the installation is complete, we need to correct Students’ desks and chairs should be inspected as a whole, to see if the surfaces of the desks and chairs are flat and smooth, and to see if the legs of the desks and chairs are straight and normal to ensure normal use.

2, pay attention to check the stability of the desks and chairs

The stability of the desks and chairs is very important, because normal use can only be guaranteed when they are used stably. If they are unstable during use, it will affect the student’s sitting posture, and even affect the student’s Body and mind are healthy, so it is necessary to check the stability of students’ desks and chairs.

3. Pay attention to the normal usability of the check function

In addition, we all know that the desks and chairs are for storing items, the desk pockets are for books, and the chairs are for students to sit and study. Therefore, the various functions of the desks and chairs must be in place, and there is also the problem of lifting and lowering the desks and chairs. It also needs to be checked in place to avoid problems with only use in the future.
Student desks and chairs
2. Checking the installation and use of student desks and chairs

1. The desks and chairs also need to be checked during the use after installation. Check the practicability and whether the use is safe and comfortable. In addition, check whether there are malfunctions or functions that cannot be used normally. For these problems, they must be carried out in time. deal with.

2. Pay attention to the cleaning and maintenance of desks and chairs. Some stains will inevitably appear during the use of desks and chairs. We must discover these stains in time and deal with them in time to ensure a clean and tidy desk and chair surface. .

3. Pay attention to inspection and maintenance. In addition, the purpose of inspection is to find faults. If there is a fault, then it needs to be repaired, so that normal use can be guaranteed. In addition, attention should be paid to maintenance. Maintenance work is also very important. , Because poor maintenance is more likely to cause a shortened service life, so good maintenance will also extend the service life.

The above is all the contents of the precautions for the inspection of the students’ desks and chairs after installation. The above content shows that the inspection after installation is very necessary, because only after the inspection can it be ensured that there will be no accidents in the process of use and safety can be guaranteed Use, and also carefully check during use, so as to ensure a longer service life. That’s all for today’s editor’s sharing. If you have any questions, you can leave a message or call for consultation. Your consultation and message are welcome!

Precautions for the configuration of desks and chairs in the lecture hall

/in /by

news3

Nowadays, many schools have lecture theatres, especially university campuses. They are mainly used to accommodate more students to attend large classes. In addition, some junior high schools also have one or two lecture theatres, mainly for convenience. There are venues for special events, so the desks and chairs in the lecture hall are also very important, because only under appropriate circumstances can they be better used by the students. Today, the editor will talk to you about the lecture hall configuration. Let’s take a look at the table and chair matters needing attention!

Notes for choosing desks and chairs in the configuration of the amphitheater:

1. First of all, when choosing a ladder classroom desk and chair, we must pay attention to choosing one that can be retracted freely, because although the ladder classroom has a large space, if the space of the ladder classroom cannot be reasonably used, then the ladder classroom is placed The number of ladder desks and chairs placed will also be affected to a certain extent. Therefore, in order to maintain the overall cleanliness of the ladder classroom, we must pay attention to the form when choosing ladder desks and chairs to ensure that the overall space created can meet the students. Usage requirements.

2. School furniture must be used to ensure the safety of students, so when configuring ladder desks and chairs, we must pay attention to whether it can ensure the safety of students as a whole. The safety of ladder desks and chairs is mainly reflected in its side. The corner design and material are up, so when we choose stepped desks and chairs, we need to pay attention to check whether the material is safe and environmentally friendly, and whether the corners and corners are rounded to avoid unnecessary safety during the use of students. Hidden dangers, of course, the overall firmness and stability of its structure is also very important.
Stepped classroom desks and chairs 3. Of course, the use of stepped desks and chairs also needs to meet the different needs of students, so in order to ensure that the stepped desks and chairs can exert performance and bring students a different sense of use, then configure When stepping desks and chairs, we need to pay attention to whether the overall quality of the desks and chairs is adequately guaranteed. This not only guarantees the safety of students, but also can effectively reduce the school’s capital consumption. Therefore, the quality of the desks and chairs is the quality of the configuration. This is the most important point and must not be underestimated.

4. In addition, the quality of the lecture hall is also very important. Only when the quality is good, can the normal use of the students be guaranteed, and at the same time, it can ensure a longer service life. In addition, pay attention to choosing the appropriate color. The color should be uniform. Comfortable and not dazzling, only in this way can the atmosphere of the classroom be better.

The above is the entire content of the precautions for the configuration of desks and chairs in the lecture hall. From the above content, it can be seen that whether it is the use of desks and chairs or the safety and quality of desks and chairs, etc., it is very important. Only to ensure these, It can ensure the correct use of students. That’s all for today’s editor’s sharing. If you have any questions, you can leave a message or call for consultation. Your consultation and message are welcome!

The size of the student apartment bed and the height of the guardrail

/in /by

Since elementary school, many students will start the life of living in school. It is also from the elementary school. The apartment beds used in schools are equipped with guardrails whether they are single-story or double-story. The size and length of the beds are also different, but The guardrail is to prevent students from accidentally falling off the apartment bed when they are asleep, so the height of the guardrail should not be too low, even if the difference is only 5cm, the safety of the students may not be guaranteed. Next, let me introduce the size of the student apartment bed and the height of the guardrail!

1. The size of the student apartment bed

There are many types of student apartment beds. According to the material, they can be divided into steel and wood. According to the structure, they can be divided into two-story apartment beds and single-story apartment beds. However, because wooden student dormitory beds are expensive and easy to damage, steel student dormitory beds are mostly used now. The following editor will introduce the size of student dormitory beds.
student apartment bed
1. Single-story student apartment bed

Under the single-story student apartment bed is a wardrobe and table. There are four standards for length, 1800mm, 1860mm, 2000mm and 2100mm; three standards for width, 900mm, 1050mm, 1200mm, and two standards for height, 2000mm and 1850mm. . The sizes of the cabinets and tables below generally do not require special requirements. They are all designed by the manufacturer, so the colors and styles are different, and you can choose freely according to your preferences.

2. Double-storey student apartment bed

The size of the double-storey student apartment bed is actually the same as that of the single-storey apartment. The difference is that there is no table and cabinet under the double-storey student apartment bed and it is also a single bed, and the height above the ground is 400-420mm.

2. The height standard of the bed guardrail in the student dormitory

In the “GB/T3328-1997 Main Dimensions of Furniture and Beds”, it is stipulated that the height of the safety guardrail of the student apartment bed must be greater than or equal to 20 cm. The more suitable guardrail height is 30 cm, and the length of the guardrail is more than 1.2 meters. The gap should be between 50 and 60 cm. At this time, it is necessary to consider that the protective effect of the guardrail will change after the mattress is placed. After all, the mattress also has a certain thickness. After the height is raised, the guardrail protects the body from a smaller area, so the student apartment bed is placed The mattress is not easy to be too high, or safety is the priority.

3. The size of the bed pedals in the student apartment

In addition to the student dormitory bed guardrails must meet the requirements of relevant standards, it is also important to pay attention to whether the stair treads of the upper and lower beds meet the standards. According to the requirements of relevant standards, the surface distance between two consecutive footboards should be 250mm ± (plus or minus) 50mm. To prevent slippage, you can also choose an apartment bed with a non-slip design on the surface of the stair treads.

The above is a detailed introduction to the size of the student apartment bed and the height of the guardrail. The size of the bed is large or small, and it can also be customized according to the size of the room, but the height of the guardrail must not be changed at will. The height of the guardrail meets the relevant standards. The size of the bed can be customized according to your needs. You are welcome to leave a message or call for consultation.

How to check the acceptance after purchasing desks and chairs?

/in /by

At present, desks and chairs are still indispensable school supplies. If a school does not have desks and chairs, students will not be able to carry out normal learning. Therefore, desks and chairs are essential for the school, and the school desks and chairs will also be based on The use situation and the number of students in the school are added or replaced, so the purchase of desks and chairs is affirmative. In the procurement process, in addition to the selection and price at the time of purchase, special attention should be paid to the acceptance of desks and chairs. In this way, the overall quality of the desks and chairs can be guaranteed to meet the standards. Today, the editor will talk to you about how to check and accept the desks and chairs after purchasing. Let’s take a look!

1. Pay attention to whether the acceptance quantity is sufficient

It is necessary to check and accept the quantity before acceptance. When purchasing, a certain number of desks and chairs are purchased according to demand. Therefore, check whether the quantity is sufficient when accepting. If the quantity is not enough, it will affect the normality of some students. Used, so be sure to count whether the quantity is enough during acceptance.

2. Pay attention to the appearance of the acceptance quality

Pay attention to check its appearance quality, check whether the overall frame is intact enough, whether there are quality problems such as scratches, bubbles, etc., and must pay attention to whether the overall style is consistent with its own requirements, to avoid the phenomenon of product inconsistency In addition, the size of the desks and chairs is also a point that needs to be paid attention to, and it is necessary to ensure that the ergonomic design is met. Therefore, it must be carefully checked during acceptance.

Three, pay attention to check whether there is damage
Student desks and chairs should also pay attention to check whether the desks and chairs are damaged during the acceptance. This is very important, because once damaged, it will not only affect normal use, but also be unfair to consumers. Yes, for the manufacturer, it also has a certain impact on the overall reputation of the brand, so it is necessary to check the damage to ensure the integrity and safety.

Fourth, pay attention to the acceptance of the metal parts of the desks and chairs

Because the overall structure of the desks and chairs is made using some metal fittings, and the quality of these metal fittings is also a part that needs to be paid attention to, so when checking the desks and chairs, it is necessary to check whether the fittings are deformed or broken. Phenomenon, of course, it is also very important to check whether there are few missing parts at the same time. Once these problems are found during the acceptance of the desks and chairs, you need to negotiate with the manufacturer in time to avoid greater losses and harm in the future. appear.

5. Pay attention to the process design of the desks and chairs for acceptance

Because the process design of desks and chairs is also an important part that affects the overall quality, it is important to check the process design when accepting desks and chairs, such as whether the connecting parts are tightly connected and in place, and you can also shake the entire desk and chair. Frame, see if there is shaking and abnormal sound, once it is natural, it indicates that there is a certain quality problem, so we need to negotiate with the manufacturer in time for the desks and chairs with these problems to avoid unnecessary harm to students.

The above is the whole content of how to check and accept the desks and chairs after purchasing. From the above content, it can be seen that there are many things that need to be paid attention to during the check and acceptance. Only when you pay attention to these can you ensure that the students are safe enough when using them. Guarantee, so every point needs to be checked. That’s all for today’s editor’s sharing. If you have any questions, you can leave a message or call for consultation. Your consultation and message are welcome!