Concrete cutting

    When choosing power trowel blades, the material directly affects the smoothness, gloss, and presence of burn marks (black streaks) on the floor. Below are the key differences and applicable scenarios for carbon steel, magnesium alloy, and plastic blades: Carbon steel is the most commonly used blade material for power trowels, primarily divided into high-carbon steel and cold-rolled steel. Advantages: High Durability: Extremely hard, capable of withstanding prolonged high-speed friction. Good Smoothness: Due to its hardness and some elasticity, it effectively fills small pits on concrete surfaces. Moderate Cost: Excellent cost-performance ratio, making it the first choice for most large-area industrial floors. Disadvantages: Prone to leaving black burnish marks on concrete surfaces, caused by metal particles abrading and embedding into the concrete surface. Applications: Base leveling (combination blades) and hardened floors that do not require special decorative effects. Note: On power trowels, magnesium alloy is more often used for hand floats or specific leveling discs/machines than for high-speed rotating finishing blades. Advantages: Extremely lightweight: Lighter than aluminum, reducing operator workload. Opens capillaries: Magnesium alloy effectively opens the capillaries of the concrete surface, removing excess water (bleed), allowing aggregates to settle and slurry to float. Non-stick: Magnesium alloy is less likely to stick to concrete than other metals. Disadvantages: Less wear-resistant than carbon steel and unsuitable as a final "smoothing" tool. Applications: Leveling and initial smoothing of concrete after initial setting. These blades are typically made of high-performance reinforced plastics such as polycarbonate or special composite materials. Advantages: No Black Marks: Completely eliminates the "scorching" problem of metal blades, leaving no black marks. High Gloss and Smoothness: Provides a uniform and bright gloss even when concrete hardens quickly. Chemical Resistance: Will not rust, suitable for special flooring materials. Disadvantages: More expensive, and wears out faster than carbon steel. Suitable for: Colored concrete, artistic flooring, epoxy flooring, or showroom floors where aesthetics are paramount. Features Carbon steel blade Magnesium alloy (commonly found in scrapers) Plastic blades Main Applications Leveling, hardening and finishing Slurry raising, initial leveling Decorative, seamless finishing Abrasion Resistance Extremely high hardness Medium Lower finish Surface Finish May leave black marks Rough, facilitates drainage Glossy, no discoloration Weight Relatively heavy Extremely light Lighter finish Recommended Stage Final hardening and finishing Initial setting and slurry raising Fine finishing for decorative surfaces If you are working on a typical factory workshop or underground warehouse floor: Choose a carbon steel combination blade with a leveling tray. This is the most economical and efficient solution. If you are working on colored or white decorative flooring: You must choose plastic blades. Although more expensive, this prevents the flooring from becoming unusable. If you are leveling manually: Prioritize a magnesium alloy trowel, as it will help you easily complete the initial leveling and finishing.   Note: The parameters provided in this document are for reference only and are not mandatory. Due to differences in technical characteristics between different brands and models of laser levelers, please consult the manufacturer for a suitable solution before actual operation. This reference document assumes no responsibility for any issues arising from failure to follow the manufacturer's instructions.    

    The long-term storage of the power trowel machine during the off-season of construction or during project intervals (usually referring to more than one month) is of vital importance. Proper storage and maintenance can greatly prevent equipment from rusting, aging and being damaged, ensuring that its performance remains as good as new when it is used again and extending its service life. The following is the standard "seven-step method" for the long-term storage of a power trowel. Please be sure to follow the sequence. This is the foundation of all steps and must never be stored with cement slurry on the machine. High-pressure flushing: Use a high-pressure water gun or a large amount of clean water to thoroughly rinse all parts of the machine body, blades, chassis, walking wheels, etc., and remove all cement, mortar, and mud lumps. Pay special attention to cleaning the connection area of the blade, the lifting screw and the area around the bearing sealing ring. Detail cleaning: Use tools such as scrapers and wire brushes to remove stubborn lumps. Comprehensive inspection: During the cleaning process, check whether the blades are worn or deformed, whether the screws and nuts are loose, whether the machine body is cracked, and whether the cables/oil pipes are damaged. Record the problems to facilitate subsequent maintenance. Move the machine to a well-ventilated, dry and rain-free indoor storage point. Dry/blow dry all surface moisture with a dry cloth or compressed air, especially: Exposed metal parts (lifting screw, adjusting rod). Blade. Engine surface. All oil injectors and gaps. Make sure that the inside and outside of the machine are completely dry, with no signs of dampness at all. Drain the old grease and add new grease: Use a grease gun to inject an adequate amount of new grease into all grease nozzles (spindle of the cutter head, bearings of the traveling wheels, steering mechanism, etc.) until all the old grease that may contain water is completely squeezed out. This can expel moisture and form a protective film inside. Apply anti-rust oil to key areas: Apply a layer of anti-rust oil or grease to all exposed metal surfaces prone to rust (non-friction contact surfaces). Key points include: Lifting screw and thread: Thickly coated with grease. Blade: Apply a thin layer of anti-rust oil to both sides (wipe it off before reuse). Chassis metal frame. Exposed bolts and nuts. Engine maintenance (for gasoline/diesel engines) : Change the engine oil: Drain the old oil when the engine is hot and add new oil to the specified mark. Fuel system treatment (crucial!)" : Option A (Recommended) : Completely drain the fuel from the fuel tank. Then start the engine and let it shut down naturally to deplete the residual fuel in the carburetor or fuel lines. Option B: If it is impossible to empty the fuel tank, fill it up with fuel and add fuel stabilizer. Then run the engine for 5 to 10 minutes to allow the stabilizer to circulate throughout the fuel line. This can prevent the fuel from gelatinizing and clogging the carburetor and fuel injector. Spark plug/fuel injector: Remove the spark plug, inject a small amount (about 10-15ml) of engine oil into the cylinder, manually and slowly pull the start rope several times to coat the cylinder wall with the engine oil, and then reinstall the spark plug (without connecting the high-voltage wire). Disconnect the battery: If the machine has power to start the battery, the negative cable should be disconnected. Remove the battery, store it in a cool and dry place, and perform a charge maintenance every 1 to 2 months. Protect the circuit: Wrap the exposed circuit joints with waterproof tape. Air filter: Remove the air filter, clean or replace it. Stuff a clean cloth into the air intake to prevent dust from entering. Tire: Lift the machine up to lift the tire off the ground to prevent the tread from being deformed and aged due to long-term single-point pressure. If it cannot be lifted, make sure the tire pressure is sufficient and move the position regularly. Blade: The blade can be removed. After cleaning, apply anti-rust oil separately and store it. Or at least ensure that rust prevention measures have been taken on the machine. Ideal environment: In a dry, cool and well-ventilated warehouse or shed. Avoid outdoor storage. Stay away from corrosion: Keep away from fertilizers, chemicals and damp ground. Stable placement: Place the machine on a flat ground and level it with wooden blocks if necessary. Cover: Use a breathable dust cover (such as a canvas cover) to cover the entire machine. It is strictly prohibited to directly wrap with completely impermeable plastic sheeting, otherwise water vapor will condense inside, causing severe rust. Marking: Hang a label that reads "Maintained and ready for storage" in a prominent position, and indicate the storage date and the date when the next inspection is required. Storage period: Every 1-2 months, check the machine for any abnormalities (such as tire pressure, the integrity of the covering, and whether there is any rat damage or wire biting), and recharge the battery. Before reactivation (very important!)" : Remove the coverings and check the overall condition. Check whether the grease in all parts has hardened and replenish or replace it if necessary. Reinstall the battery (if it has been removed) and connect it firmly. Remove the blockage at the air intake and reinstall the air filter. Wipe off the excess anti-rust oil from the key friction areas (such as the contact surface between the blade and the ground). Check the fuel and engine oil according to the normal start-up procedure, and then start the machine. First, run it at low speed without load for a few minutes to allow all components to lubricate and circulate. Only after there are no abnormal sounds can it be put into construction. Cleanliness is the prerequisite: no cement residue. Drying is fundamental: eliminate moisture. Lubrication and rust prevention are key: putting on a "protective suit" for metals. The fuel system needs to be properly handled: to prevent clogging. It's better to store off the ground: protect the tires. Regular inspections are indispensable: dynamic management. By following the above methods, your power trowel machine can quickly regain its "combat effectiveness" even after being idle for several months, effectively avoiding problems such as difficult startup, component jamming, and rust damage, truly achieving "always on standby, reliable and durable".   Note: The parameters provided in this document are for reference only and are not mandatory. Due to differences in technical characteristics between different brands and models of laser levelers, please consult the manufacturer for a suitable solution before actual operation. This reference document assumes no responsibility for any issues arising from failure to follow the manufacturer's instructions.    

  Long-term use of the laser leveling machine will cause major and minor faults. When facing these faults, we must find a solution to the problem. A common problem is that the laser leveling machine hopper cannot be closed. When such a problem occurs, we must first find the root cause of the problem and find the answer to the problem based on the root cause. The following laser leveling machine manufacturer will reveal the reason why the laser leveling machine hopper cannot be closed. The laser leveling machine manufacturer will show you the reason that the hydraulic oil in the laser leveling machine hopper cylinder leaks. First, check the piston seal. Aging or wear of the seal will cause insufficient thrust of the hopper cylinder. Replace it if necessary. If there is no problem with the laser leveling machine seal, check the gap between the cylinder and the piston of the equipment. Cylinder wear can make the gap too large, making the thrust of the laser leveling machine hopper cylinder smaller. If it is found that there is no hydraulic oil in the laser leveling machine hopper cylinder during the inspection, it may be that the equipment overflow valve is faulty, causing it to be in an open state for a long time, so that no oil flows into the hopper cylinder. At this time, check whether there is dirt in the overflow valve. The laser leveling machine manufacturer will let you know that it is generally caused by leakage of the laser leveling machine hydraulic pump. If the hydraulic pump itself is worn, it is internal leakage, and if the seal is worn, it is external leakage. If necessary, the worn parts should be replaced in time. In addition, if the hydraulic pump does not absorb oil due to too little hydraulic oil or the hydraulic pump oil filter is blocked, it will also reduce the oil supply pressure. At this time, the pump will make a loud noise when running, so it can be judged based on whether the meshing sound of the pump gear is normal. The laser leveling machine manufacturer will let you know that the hydraulic pump that controls the closing of the left and right hoppers of the laser leveling machine and controls the lifting of the ironing plate is the same pump. If the left and right hoppers cannot be closed normally due to the hydraulic system, the laser leveling machine ironing plate will also have a corresponding failure. Therefore, if the hopper and the screed fail at the same time, the hydraulic pump failure should be the first thing to think of. As the standards of the construction industry continue to improve, more and more users begin to pay attention to high-precision floor construction, and a laser leveling machine product that focuses on precision and efficiency can be recognized by users to a large extent. Technology is important, and concepts are also important. The knowledge points shared by the laser leveling machine manufacturer have deepened your impression. I hope this article can help you. Secondly, it is recommended that you regularly maintain and care for the equipment, which can reduce the number of repairs. Thank you for your continued attention and support.