A special-shaped cutting blade and its manufacturing method
A manufacturing method and cutting blade technology, applied in the direction of manufacturing tools, shearing devices, cutters for shearing machines, etc., can solve the problems of easy wear and chipping of the cutting edge of the cutting knife, and achieve compactness and firmness. High, stable performance and long service life
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Embodiment 1
[0042] Such as figure 1 with figure 2 Shown, a kind of special-shaped cutting blade, its shape is a right-angled trapezoid, the hypotenuse of trapezoid is the blade of cutting knife, the base angle α of trapezoid is 22 °, and the thickness of cutting blade is 2.4mm.
[0043] The manufacture method of above-mentioned special-shaped slitting blade, its steps are:
[0044] (1) Preparation of rough raw materials:
[0045] It is made by using forging blanks for forging. The mass percentages of the components of the forging blanks are: C: 0.90%, Mn: 5.50%, Si: 0.35%, Co: 6.0%, Cr: 4.00%, W: 6.20%, V: 1.50%, Zr: 0.50%, Ni: 0.95%, S: ≤0.020%, P: ≤0.020%, and the balance is Fe;
[0046] (2) Isothermal spheroidizing annealing treatment of forged blank:
[0047] The forged blank obtained in step (1) is annealed, heating rate s=(T-T 0 ) / (W wt +V wt )°C / h=(800-25) / (6.2+1.5)=101°C / h (where T is the holding temperature in °C, T 0 is the initial temperature, in °C, W wt is the mass ...
Embodiment 2
[0066] Such as figure 1 with figure 2 Shown, a kind of special-shaped cutting blade, its shape is a right-angled trapezoid, the hypotenuse of trapezoid is the blade of cutting knife, the base angle α of trapezoid is 20 °, and the thickness of cutting blade is 3mm.
[0067] The manufacture method of above-mentioned special-shaped slitting blade, its steps are:
[0068] (1) Preparation of rough raw materials:
[0069] It is made by using forging blanks for forging. The mass percentages of the components of the forging blanks are: C: 0.86%, Mn: 6.00%, Si: 0.32%, Co: 8.0%, Cr: 3.80%, W: 7.50%, V: 1.40%, Zr: 0.65%, Ni: 0.80%, S: ≤0.020%, P: ≤0.020%, and the balance is Fe;
[0070] (2) Isothermal spheroidizing annealing treatment of forged blank:
[0071] The forged blank obtained in step (1) is annealed, heating rate s=(T-T 0 ) / (W wt +V wt )°C / h=(780-25) / (7.5+1.4)=84°C / h (where T is the holding temperature in °C, T 0 is the initial temperature, in °C, W wt is the mass per...
Embodiment 3
[0089] Such as figure 1 with figure 2 Shown, a kind of special-shaped cutting blade, its shape is a right angle trapezoid, the hypotenuse of trapezoid is the blade of cutting knife, the base angle α of trapezoid is 30 °, and the thickness of cutting blade is 2mm.
[0090] The manufacture method of above-mentioned special-shaped slitting blade, its steps are:
[0091] (1) Preparation of rough raw materials:
[0092] It is made by using forging blanks for forging. The mass percentages of the components of the forging blanks are: C: 1.05%, Mn: 4.50%, Si: 0.40%, Co: 4.8%, Cr: 4.50%, W: 5.00%, V: 1.65%, Zr: 0.45%, Ni: 1.25%, S: ≤0.020%, P: ≤0.020%, and the balance is Fe;
[0093] (2) Isothermal spheroidizing annealing treatment of forged blank:
[0094] The forged blank obtained in step (1) is annealed, heating rate s=(T-T 0 ) / (W wt +V wt )°C / h=(820-25) / (5.00+1.65)=119°C / h (where T is the holding temperature in °C, T 0 is the initial temperature, in °C, W wt is the mass p...
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