Steel Bar Cutting Blades

1.In the field of construction engineering, reinforced concrete structure construction is used to cut steel bars in walls, floors, beams, columns and other parts to meet the needs of building structure renovation or reinforcement. The cutting accuracy error can be controlled within ≤ 0.1 mm to ensure the matching of subsequent welding or installation.

2.Cutting of steel skeleton or tunnel lining steel bars in bridge and tunnel engineering, combined with diamond cutting blades (such as resin based or metal based blades) to achieve efficient processing of hard and brittle materials.       

3.Metal recycling and regeneration processing, handling waste steel bars, metal structural components, etc. in construction waste, using high wear resistant blades (such as HSS-C05 cobalt containing high-speed steel) to quickly shred or cut, supporting resource recycling.

4.When repairing and dismantling equipment and cutting corroded or deformed steel bars, alloy tool steel blades (such as Cr12MoV) can balance cost and durability, and are suitable for non-standard environmental operations, reducing dust and noise pollution.

High speed steel circular saw blade (HSS): suitable for cutting ordinary steel bars (HRB335, HRB400, etc.), with high cost-effectiveness;

The cutting speed can reach 60 meters per minute, and the service life can be extended by grinding the blade teeth.

Cold saw blade (ceramic metal saw blade): with stronger high-temperature resistance, suitable for high-strength steel bars (such as HRB500) or batch continuous cutting scenarios; The cutting surface is smoother and the heat dissipation is faster, but the price is higher.

Outer diameter: For steel bars with a diameter ≤ 20mm, choose 250-315mm; for those with a diameter>20mm, choose 350-500mm;

Thickness: For steel bars with a wall thickness ≤ 10mm, choose 2.0-2.5mm, and for those with a wall thickness>10mm, choose 3.0-4.0mm;

Number of teeth: 60-120 teeth are recommended for steel bar cutting, with dense teeth to reduce burrs.

Installation requirements:

Ensure the accuracy of the equipment spindle and no eccentric shaking of the saw blade after installation;

Before cutting, check if the fixture is clamping the steel bars to avoid material displacement.

Cutting parameters:

The recommended speed for ordinary steel bars is 100-300 revolutions per minute, with uniform feed speed to avoid overload;

High strength steel bars need to reduce the rotational speed to 80-150 revolutions per minute and use cutting fluid to cool down.

Lubrication and cooling:

Dry cutting is strictly prohibited and requires the use of emulsion or specialized cutting fluid for cooling;

Cut for a long time and stop every 15 minutes to clean debris and prevent clogging of the saw teeth.

Incision burrs: Check if the serrations are blunted or broken, and promptly grind or replace them;

Saw blade burst: Check for overspeed, feed too fast, or material not clamped properly;

Short lifespan: Prioritize cobalt or titanium plated models and standardize operating procedures.

Short term/low-frequency use: Choose HSS-DM05 ordinary high-speed steel saw blade (such as 250 × 2.5 × 32), with a lower unit price;

Long term/high-frequency use: Cold saw blades (such as ceramic metal blades) have a higher unit price, but their lifespan is increased by 3-5 times.

Through reasonable selection and standardized operation, it is possible to balance cutting efficiency and economy, and adapt to the needs of scenarios such as buildings and steel structures.