Asphalt mixture must be produced in a heating device and cannot be created through manual or cold mixing. This ensures the proper bonding of asphalt with aggregate materials, which is essential for the performance and durability of the final product.
When setting up an asphalt mixing plant, several key requirements must be met to ensure efficient and high-quality production. First, the location should have good transportation access, with dry and drained areas for receiving and storing raw materials. Second, there must be reliable power, water, and heat supply to support continuous operations. Third, asphalt storage should be organized into labeled, sealed tanks to prevent contamination and degradation. Lastly, mineral materials such as crushed stone, sand, and fines should be stored on hard surfaces, separated from each other to avoid cross-contamination. Mineral powders, in particular, need protection from moisture and rain to maintain their quality.
Hot mixing is the standard process for asphalt mixtures, and it can be done using either intermittent or continuous mixing machines. Continuous mixers are typically equipped with automatic feeding systems that adjust the material proportions based on the design mix. These systems monitor the moisture content of the aggregates and regulate the feed rate and asphalt dosage accordingly. Intermittent mixers, on the other hand, should have automatic recording devices that track and print data such as the amount of asphalt, aggregate quantities, and mixing temperature after each batch.
In addition to mechanical specifications, the mixing time should be fine-tuned through trial batches to ensure complete coating of the aggregates with asphalt. For typical batch mixers, the mixing duration per batch should range between 30 to 50 seconds, with a minimum dry mixing time of 5 seconds. The choice of vibrating screen mesh for secondary screening of hot aggregates depends on the gradation requirements, and the installation angle should be adjusted according to the material’s flowability and the vibrator’s capacity.
A well-mixed asphalt mixture should exhibit uniform consistency, with no uncoated particles, clumping, or excessive segregation of coarse and fine materials. Additionally, the factory temperature of the mixture must meet national standards to ensure proper compaction and long-term performance on the road surface.
Chainsaw: Gasoline chainsaw. This is the smallest kind of chainsaw. It is powered by a small two-stroke gasoline engine, similar to the Brush Cutter, Outboard Motor, driven by a sprocket, and runs on the guide board through a dedicated cutting saw chain to achieve the purpose of cutting and pruning wood, branches, ice and other themes. Mainly used for landscaping pruning, replacing the special guide board can be used as a large wood carving, ice carving large outline modification
Chainsaw products have many advantages, such as large power, small vibration, high cutting efficiency and low cutting cost. It has become the leading hand-held logging machine in the forest area.
The chainsaw shock absorption system uses springs and high strength rubber shock absorption. Sprocket form for positive teeth, make the assembly chain more simple and convenient!
Excellent and reliable ignition device, oil supply system using adjustable oil pump.
Before use, you must read the operation manual carefully to understand the characteristics, technical performance and precautions of the chainsaw.
Before use, the fuel tank, the fuel tank of the machine to add enough oil; Adjust the tightness of the saw chain, neither too loose nor too tight.
Before operation, the operator should wear work clothes, helmet, protective gloves, dust-proof glasses or facial protective cover.
After the engine starts, the operator holds the rear saw handle with his right hand and the front saw handle with his left hand. The Angle between the machine and the ground should not exceed 60 degrees, but the Angle should not be too small, otherwise it is not easy to operate.
When cutting, cut off the lower branches first, and then saw the upper branches. Heavy or large branches should be cut in sections.
38cc petrol chainsaw,chain saw attachment,top handle chain saw
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