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Cutting by a bucket tooth processing sawing machine
Sawing machine cutting in bucket tooth processing is a crucial blanking procedure, mainly used for the precise division of steel billets. The key points of its process are as follows:
I. Core Process Requirements
Blank cutting accuracy control
The sawing machine cutting must ensure that the length tolerance is ≤±0.5mm and the verticality of the cross-section is ≤0.1mm/100mm, providing a dimensional reference for subsequent forging.
When cutting alloy structural steel (such as 40CrMnMo), the heat-affected zone should be avoided, and the coolant flow rate should be ≥15L/min to prevent material hardening.
The sawtooth performance is selected as
Tungsten-cobalt type hard alloy saw teeth (such as YG8) are adopted, with a rake Angle γ of 10° to 15° to enhance the cutting sharpness, and the bending strength should be ≥3500MPa.
The sawtooth thickness is 1.0 to 1.2mm, taking into account both strength and chip removal efficiency. When cutting Q500MC high-strength steel, the linear speed is controlled at 25 to 40m/min.
Application of automation equipment
The CNC sawing machine is equipped with a servo control system, with a stroke positioning accuracy of ±0.02mm, and can automatically adapt to billets of different diameters (φ50 to 200mm).
Integrated pneumatic clamping device, with a clamping force of ≥5 tons, prevents cross-sectional skewing caused by cutting vibration.
Ii. Connection of Supporting processes
Process sawing post-treatment requirements purpose
The edges and corners are blunted. The R Angle of all cutting surfaces should be ≥0.5mm to eliminate the source of forging stress concentration
Magnetic particle testing for defect detection examines cross-sectional cracks and eliminates internal defects of ≥0.1mm
The weight difference of the billet weighing groups within the same batch should be ≤±0.5% to ensure the uniformity of die forging filling
Iii. Material Compatibility Cases
High-strength steel cutting : Special cooling oil is required for sawing Q500MC steel plates (25mm thickness), with a unit price of approximately ¥4800 per ton.
Weathering steel cutting : Q295NH steel plate is cut by laser combined sawing, with a cross-sectional roughness Ra≤12.5μm, and the unit price is ¥4,650-4,768 per ton.
Operation prompt : after cutting, the forging process must be transferred within 24 hours to prevent the thickening of the oxide layer at the cut edge from affecting the quality of the forging.
Cutting by a bucket tooth processing sawing machine
Sawing machine cutting in bucket tooth processing is a crucial blanking procedure, mainly used for the precise division of steel billets. The key points of its process are as follows:
I. Core Process Requirements
Blank cutting accuracy control
The sawing machine cutting must ensure that the length tolerance is ≤±0.5mm and the verticality of the cross-section is ≤0.1mm/100mm, providing a dimensional reference for subsequent forging.
When cutting alloy structural steel (such as 40CrMnMo), the heat-affected zone should be avoided, and the coolant flow rate should be ≥15L/min to prevent material hardening.
The sawtooth performance is selected as
Tungsten-cobalt type hard alloy saw teeth (such as YG8) are adopted, with a rake Angle γ of 10° to 15° to enhance the cutting sharpness, and the bending strength should be ≥3500MPa.
The sawtooth thickness is 1.0 to 1.2mm, taking into account both strength and chip removal efficiency. When cutting Q500MC high-strength steel, the linear speed is controlled at 25 to 40m/min.
Application of automation equipment
The CNC sawing machine is equipped with a servo control system, with a stroke positioning accuracy of ±0.02mm, and can automatically adapt to billets of different diameters (φ50 to 200mm).
Integrated pneumatic clamping device, with a clamping force of ≥5 tons, prevents cross-sectional skewing caused by cutting vibration.
Ii. Connection of Supporting processes
Process sawing post-treatment requirements purpose
The edges and corners are blunted. The R Angle of all cutting surfaces should be ≥0.5mm to eliminate the source of forging stress concentration
Magnetic particle testing for defect detection examines cross-sectional cracks and eliminates internal defects of ≥0.1mm
The weight difference of the billet weighing groups within the same batch should be ≤±0.5% to ensure the uniformity of die forging filling
Iii. Material Compatibility Cases
High-strength steel cutting : Special cooling oil is required for sawing Q500MC steel plates (25mm thickness), with a unit price of approximately ¥4800 per ton.
Weathering steel cutting : Q295NH steel plate is cut by laser combined sawing, with a cross-sectional roughness Ra≤12.5μm, and the unit price is ¥4,650-4,768 per ton.
Operation prompt : after cutting, the forging process must be transferred within 24 hours to prevent the thickening of the oxide layer at the cut edge from affecting the quality of the forging.
