Polishing device, polishing method and polishing solution

Abstract

The invention discloses a polishing device, a polishing method and a polishing solution. The polishing device, the polishing method and the polishing solution are suitable for polishing metal workpieces with complicated surface structures. The polishing device comprises a polishing barrel, a first motor, a stirrer and a clamp, wherein the polishing barrel comprises a side wall and a base plate, the side wall and the base plate define a containing cavity, the containing cavity is used for containing SiO2 nano-particle liquid, the first motor is fixed to the polishing barrel, the stirrer is located at the bottom of the containing cavity and driven by the first motor to rotate, the stirrer stirs the SiO2 nano-particle liquid in the containing cavity, the clamp is fixed into the polishing barrel and used for fixing a metal workpiece. According to the polishing device, the polishing method and the polishing solution, high-speed liquid flow mixed with SiO2 nano-particles is utilized to makefriction with the surface of the metal workpiece, protrusions on the surface of the metal workpiece generate plastic deformation and even shear under high-speed collision of the SiO2 nano-particles, so that surface polishing of the metal workpiece is achieved; since the polishing medium is the fluid mixed with the SiO2 nano-particles, the damage to the integrity and the surface of the workpiece bychemical polishing and electrochemical polishing is avoided, and overall polishing of a special-shaped surface is achieved.

Description

technical field

[0001] The invention relates to a polishing technology, which is especially suitable for surface polishing of metal parts with complicated surface structures such as 3D printing, and specifically relates to a polishing equipment, a polishing method and a polishing liquid. Background technique

[0002] Laser selective melting technology is a kind of metal 3D printing forming technology. Laser selectively melts metal powder, melts and solidifies metal powder layer by layer, and can form metal structural parts or components with complex shapes in a short period of time, breaking through traditional metal machining. The technology can not make defects in metal parts and metal components with special-shaped structures, but the surface of the metal workpiece after 3D printing has a lot of floating powder, and the surface is still rough after sandblasting, which cannot meet the design and use requirements of designers and people. , need to spend a lot of manpower fo...

Examples

Embodiment 1

[0070] Put a 3D printed titanium alloy workpiece into the polishing equipment for polishing. The roughness Ra before grinding is 10-11. The specific operations can be:

[0071] Open the upper cover of the equipment and put SiO into the polishing barrel according to the gravity ratio 2 20 parts of granules, 80 parts of water; then add 3 parts of anti-rust agent according to the volume ratio. Antirust agent is polyethylene glycol PEG-400.

[0072] The 3D printed titanium alloy workpiece is clamped on the fixture, and the fixture is fixed on the connecting shaft with screws.

[0073] Cover the upper cover, start the agitator motor and the workpiece rotation motor, set the agitator motor speed to 200r / min, and the workpiece rotation motor speed to 60r / min.

[0074] Run for 25 minutes, stop the two motors. Take out the 3D printed titanium alloy workpiece, and measure the surface roughness Ra to be 6-8.

Embodiment 2

[0076] Put a 3D printed titanium alloy workpiece into the polishing equipment for polishing. The roughness Ra before grinding is 10-11. The specific operations can be:

[0077] Open the upper cover of the equipment and put SiO into the polishing barrel according to the gravity ratio 2 20 parts of granules, 80 parts of water; then add 3 parts of anti-rust agent and 2 parts of lubricant according to the volume ratio. SiO 2 The average particle diameter is 50-60 nanometers, the antirust agent is polyethylene glycol PEG-400, and the lubricant is ethylene glycol and sodium phosphate.

[0078] The 3D printed titanium alloy workpiece is clamped on the fixture, and the fixture is fixed on the connecting shaft with screws.

[0079] Cover the upper cover, start the agitator motor and the workpiece rotation motor, set the agitator motor speed to 200r / min, and the workpiece rotation motor speed to 60r / min.

[0080] Run for 20 minutes, stop the two motors. Take out the 3D printed tit...

Embodiment 3

[0082] Put a 3D printed titanium alloy workpiece into the polishing equipment for polishing. The roughness Ra before grinding is 10-11. The specific operations can be:

[0083] Open the upper cover of the equipment and put SiO into the polishing barrel according to the gravity ratio 2 10 parts of granules, 90 parts of water; then according to the volume ratio, add 3 parts of anti-rust agent and 2 parts of lubricant. SiO 2 The average particle diameter is 50-60 nanometers, the antirust agent is polyethylene glycol PEG-400, and the lubricant is ethylene glycol and sodium phosphate.

[0084] The 3D printed titanium alloy workpiece is clamped on the fixture, and the fixture is fixed on the connecting shaft with screws.

[0085] Cover the upper cover, start the agitator motor and the workpiece rotation motor, set the agitator motor speed to 200r / min, and the workpiece rotation motor speed to 60r / min.

[0086] Run for 30 minutes, stop both motors. Take out the 3D printed titan...

technical field

[0001] The invention relates to a polishing technology, which is especially suitable for surface polishing of metal parts with complicated surface structures such as 3D printing, and specifically relates to a polishing equipment, a polishing method and a polishing liquid. Background technique

[0002] Laser selective melting technology is a kind of metal 3D printing forming technology. Laser selectively melts metal powder, melts and solidifies metal powder layer by layer, and can form metal structural parts or components with complex shapes in a short period of time, breaking through traditional metal machining. The technology can not make defects in metal parts and metal components with special-shaped structures, but the surface of the metal workpiece after 3D printing has a lot of floating powder, and the surface is still rough after sandblasting, which cannot meet the design and use requirements of designers and people. , need to spend a lot of manpower fo...

Examples

Embodiment 1

[0070] Put a 3D printed titanium alloy workpiece into the polishing equipment for polishing. The roughness Ra before grinding is 10-11. The specific operations can be:

[0071] Open the upper cover of the equipment and put SiO into the polishing barrel according to the gravity ratio 2 20 parts of granules, 80 parts of water; then add 3 parts of anti-rust agent according to the volume ratio. Antirust agent is polyethylene glycol PEG-400.

[0072] The 3D printed titanium alloy workpiece is clamped on the fixture, and the fixture is fixed on the connecting shaft with screws.

[0073] Cover the upper cover, start the agitator motor and the workpiece rotation motor, set the agitator motor speed to 200r / min, and the workpiece rotation motor speed to 60r / min.

[0074] Run for 25 minutes, stop the two motors. Take out the 3D printed titanium alloy workpiece, and measure the surface roughness Ra to be 6-8.

Embodiment 2

[0076] Put a 3D printed titanium alloy workpiece into the polishing equipment for polishing. The roughness Ra before grinding is 10-11. The specific operations can be:

[0077] Open the upper cover of the equipment and put SiO into the polishing barrel according to the gravity ratio 2 20 parts of granules, 80 parts of water; then add 3 parts of anti-rust agent and 2 parts of lubricant according to the volume ratio. SiO 2 The average particle diameter is 50-60 nanometers, the antirust agent is polyethylene glycol PEG-400, and the lubricant is ethylene glycol and sodium phosphate.

[0078] The 3D printed titanium alloy workpiece is clamped on the fixture, and the fixture is fixed on the connecting shaft with screws.

[0079] Cover the upper cover, start the agitator motor and the workpiece rotation motor, set the agitator motor speed to 200r / min, and the workpiece rotation motor speed to 60r / min.

[0080] Run for 20 minutes, stop the two motors. Take out the 3D printed tit...

Embodiment 3

[0082] Put a 3D printed titanium alloy workpiece into the polishing equipment for polishing. The roughness Ra before grinding is 10-11. The specific operations can be:

[0083] Open the upper cover of the equipment and put SiO into the polishing barrel according to the gravity ratio 2 10 parts of granules, 90 parts of water; then according to the volume ratio, add 3 parts of anti-rust agent and 2 parts of lubricant. SiO 2 The average particle diameter is 50-60 nanometers, the antirust agent is polyethylene glycol PEG-400, and the lubricant is ethylene glycol and sodium phosphate.

[0084] The 3D printed titanium alloy workpiece is clamped on the fixture, and the fixture is fixed on the connecting shaft with screws.

[0085] Cover the upper cover, start the agitator motor and the workpiece rotation motor, set the agitator motor speed to 200r / min, and the workpiece rotation motor speed to 60r / min.

[0086] Run for 30 minutes, stop both motors. Take out the 3D printed titan...

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