Powder rolling method and device for amorphous alloy
An amorphous alloy and powder rolling technology, which is applied in the field of amorphous alloy and composite material preparation, can solve the problems of limited size and shape, and achieve the effects of reducing preparation cost, flexible performance regulation, and broadening the scope of application.
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Embodiment 1
[0063] Such as figure 1 Shown, a kind of rolling device of amorphous alloy product, comprises the feeding head 1 of feeding part, the roll 5 of rolling part, the DC power supply system 7 in the power supply system and the shielding gas spray gun 2 in the cooling system; Wherein: The feeding head 1 of the feeding part is used for the amorphous alloy Zr 55 Cu 30 Ni 5 al 10 and Zr 41.2 Ti 13.8 Cu 12.5 Ni 10 be 22.5 The mixed powder is sent into the nip of two oppositely arranged rolls 5 in the rolling section; brushes 4 are arranged on the center line of the two rolls and on both sides of the nip; the mixed powder of amorphous alloy is located on the two relatively rotating In the nip of the rolls; two relatively rotating rolls 5 are used for single-pass or multi-pass rolling of the amorphous alloy powder in the supercooled liquid phase region; the brush 4 is always in contact with the rolls 5 during the rolling process. The frictional connection is maintained; the brush...
Embodiment 2
[0066] use as figure 2 Rolling is carried out in the shown device, which includes a feeding hopper 8 and a powder conveying mechanism 9 in the feeding part, a roll 5 in the rolling part, a brush 4 and a shielding gas spray gun 2 in the cooling system.
[0067]The target product is particle-reinforced amorphous alloy composite sheet 10, with a thickness of 10mm and an amorphous composition of Zr 55 Cu 30 Ni 5 Al 10 , the reinforcing phase is ZrO 2 . First, the amorphous alloy powder is prepared by gas atomization technology, and the powder with a particle size range of 20-50um is screened, and it is evenly mixed with ZrO2 powder by ball milling, and the powder is vacuum-dried at 120°C for 1 hour to remove the water vapor adsorbed on the surface of the powder , to ensure smooth and continuous powder flow during the rolling process. The mixed powder is introduced into the feeding hopper 8, and the powder is sent into the rolling gap through the powder conveying mechanism 9...
Embodiment 3
[0069] use as image 3 The rolling device shown, the target product is an amorphous alloy ring 11, and the amorphous component is Zr 55 Cu 30 Ni 5 Al 10 , first prepare amorphous alloy powder by gas atomization technology, and screen the powder with a particle size range of 20-50um. The binder zinc stearate powder is selected, mixed evenly with the amorphous alloy powder, and then pressed into a ring blank with a certain bonding strength. The boiling point of zinc stearate is about 360°C, and it will be heated and evaporated during the rolling process. Send the ring billet into the ring rolling device for hot rolling, the rolling deformation rate is 80%, and the rolling temperature is 390°C. The driving roll 14 actively rotates and bites into the ring blank, and controls the rolling deformation together with the passive roll 13. The holding roll 12 runs according to the preset track to ensure the ellipticity of the ring. During the rolling process, the infrared thermomet...
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