In road marking construction, choosing the right nozzle size is a key step in ensuring marking quality and construction efficiency. The nozzle size not only affects the width of the line, but is also closely related to the viscosity of the paint, the flow limit of the equipment and the construction conditions.
Selection of road marking machine nozzles need to consider the key factors.
I. Scribing width requirements
There is a direct relationship between the nozzle size of the road marking machine and the width of the line. Generally speaking, the larger the nozzle size, the wider the width of the delineation; conversely, the smaller the nozzle size, the narrower the width of the delineation. Therefore, when selecting a nozzle, you first need to specify the required scribing width. Below is a list of common nozzle sizes that correspond to marking widths:
- Nozzles beginning with 2: Usually used for spraying markings with a width of about 5 cm, suitable for narrow roads or areas where fine marking is required.
- Nozzles starting with 3: are suitable for marking widths of approx. 10 cm and are often used on urban roads and pedestrian crossings.
- Nozzles starting with 4: capable of applying lines between 10 and 20 cm in width, suitable for highways and major arterials.
- Nozzles starting with 5: suitable for spraying lines between 15 and 25 cm in width, commonly used in large parking lots and industrial areas.
- Nozzles beginning with 6: capable of spraying markings with a width of 20 to 30 centimeters, suitable for special areas that require wide markings, such as airport runways.
Second, the influence of paint viscosity
The viscosity of the paint is a factor that cannot be ignored when choosing the nozzle size. Paint of different viscosity requires different sizes of nozzles to ensure the spraying effect:
Low viscosity coatings: such as colorants and varnishes, usually require the use of a small diameter nozzle. This is because low-viscosity paints flow better, and a smaller nozzle allows for better control of the amount of paint sprayed and avoids excessive spreading of the paint.
Higher viscosity coatings, such as oil-based coatings, require a larger diameter nozzle. High-viscosity coatings have poor fluidity, and a larger diameter nozzle can ensure that the coating passes smoothly and is evenly sprayed on the road to avoid clogging and uneven spraying.
Third, the equipment flow limit
Each road marking machine has its maximum flow limit, which is a factor that must be considered when choosing the nozzle size. The flow rate of the nozzle should match the flow limit of the equipment to ensure that the equipment can operate properly and extend the service life.
Know the maximum flow rate of the equipment: When selecting a nozzle, you first need to know the maximum flow limit of the scribing machine. The flow rate of the nozzle should not exceed the carrying capacity of the equipment, otherwise it may cause the equipment to be overloaded, affecting its performance and life.
Selecting high flow nozzles: Within the maximum flow limit of the equipment, high flow nozzles can be selected to improve construction efficiency. However, it should be noted that the flow rate selection should be left open to avoid prolonged high load operation of the equipment, thereby extending the service life of the equipment.
Fourth, the choice of nozzle type and brand
In addition to size and flow, the type and brand of the nozzle of the scribing machine is also an important factor to consider when choosing. Different types of nozzles are suitable for different coatings and construction conditions, while nozzles of well-known brands usually have higher quality and longer service life.
Nozzle type: There are various types of nozzles available in the market, such as fan nozzles and round nozzles. Fan nozzles are suitable for applications that require uniform spraying, while round nozzles are suitable for applications that require precise control. Choosing the right type of nozzle according to construction needs can significantly improve the quality of marking.
Brand selection: Choosing a well-known brand of nozzle ensures quality and performance. Well-known brands usually undergo strict quality control and can provide more stable spraying results and longer service life, thus reducing construction costs and maintenance frequency.
V. Actual Test and Adjustment
Before actual construction, nozzle testing and adjustment is an important step to ensure the quality of marking. By testing the spraying effect of different nozzles, you can find the most suitable nozzle size for the current construction conditions and needs.
Testing different nozzles: Before the actual application, it is recommended to test different nozzle sizes to observe the spraying results. By comparing the marking width, uniformity and paint consumption of different nozzles, the most suitable nozzle size can be selected.
Adjustment of equipment parameters: Based on the test results, the parameters of the road marking machine can be adjusted, such as spraying pressure, spraying speed, etc., to further optimize the marking effect. Through fine adjustment, it can ensure that the marking quality and construction efficiency are optimized.
Through scientific selection and fine adjustment, the quality and construction efficiency of road marking can be significantly improved to ensure smooth construction and prolong the service life of the equipment.