How to deburr, descale, deflash, finish and polish precision aluminum alloy die casting gearbox housing

Deburring, deflashing, descaling, finishing and polishing technology for precision aluminum alloy die casting gearbox housing

Aluminum alloy die-castings are widely used in the production and manufacturing of mechanical parts in the electronics, automobile, aircraft, shipbuilding, motor, home appliance and other industries. They have the advantages of beautiful appearance, light weight, high strength and corrosion resistance. However, defects such as burrs, flash, and sharp edge often occur during the production process, so the surface finishing process of the product is particularly important. In this case, we will share a process technology and method for the automated and efficient deburring, deflashing, descaling of aluminum alloy die-casting parts for automobile gearbox housings. This polishing process solution is also suitable for the surface finishing of other die-casting parts made of soft metal materials such as zinc, magnesium, and copper.

    • jerrylu
    • 2024-06-03
    • 0 Comments

     

deburring,deflashing, descaling and polishing effect of aluminum die-casting gearbox housing

1. Aluminum alloy die-casting gearbox housing before polishing
surface burrs, oxide scale of aluminum die-cast gearbox housing

Materials:

aluminum alloy

Appearance:

deges burrs，surface oxide scale.

Shape:

irregular shape

Size:

300*260*150 MM

Pre-polishing process:

high pressure casting

Post-polishing process:

packing

2. Finishing and polishing requirements
  • deburring,deflashing,descaling.
  • smooth,bright surface, no burrs, no oxide scale.
3. Aluminum alloy die-casting gearbox housing polishing process details:
Process steps （1） finish to deburr,deflash,descale （2） cleaning （3） vibratory drying
Machinery and equipment vibratory finishing machine vibratory finishing machine vibratory dryer
Speed highest highest highest
Tumbling media Cone resin media Angle cut cylinder porcelain media corn cob polishing media
Abrasive media to workpiece ratio 4：1 4：1 8：1
Finishing and polishing compound finishing liquid cleaning liquid no
Water appropriate amount, liquid level does not exceed abrasive media appropriate amount, liquid level does not exceed abrasive media no
Polishing time 60 minutes 15 minutes 15 minutes
Remark parts separated and picked up automatically, rinsed with water parts separated and picked up automatically, rinsed with water vibratory drying
4. The effect of deburring, deflashing, descaling and polishing the aluminum alloy die-casting gearbox housing
deburring, deflashing, descaling, polishing, brightening effect of aluminum alloy gearbox housing
finishing, polishing, burnishing effect of aluminum alloy gearbox housing

5. Additional instructions
  • The gearbox housing is produced by high-pressure casting of aluminum alloy. The product has high precision and a smooth surface, but burrs and flashes will appear on the edges and holes of surface, which need to be polished. Therefore, a finishing process combining rough deburring, deflashing, descaling and cleaning is adopted. The rough finishing adopts a vibratory finisher with medium cutting force cone plastic media. The sharp angle of the tumbling media can reach into the grooves, corners and inner walls to remove burrs and flash.
    A vibratory polishing machine is used for cleaning. The abrasive media is made of precision finishing material without cutting force angle cut cylinder porcelain polishing media. This tumbling porcelain media has a high density and has a polishing and brightening effect, which can further reduce the surface roughness.
  • In order to improve the anti-rust performance of the product after water treatment, use a vibrating dryer with corn cob drying media to absorb moisture and dry the inner and outer surfaces.

6. Final summary
  • In this case, we demonstrated the process solution of automated deburring, deflashing, descaling and polishing of a precision die-cast aluminum product, a gearbox housing, used in the automotive parts industry.
  • If you need professional technical support for the polishing of the following aluminum alloy, zinc alloy, magnesium alloy or copper alloy die-cast parts, you can refer to the above cases:
    Deburring, deflashing process technology methods for aluminum alloy die-casting automobile and motorcycle gearbox housings parts polishing process methods
    Automated deburring of aluminum alloy die-castings
    Deburring equipment for die-castings
    How to remove aluminum alloy burrs
    How to deal with aluminum alloy surface burrs
    How to deburr aluminum alloy auto parts
    Deburring methods for die-cast aluminum
    The best way to deburr die-cast aluminum parts
    Die-cast aluminum polishing and brightening technology
    How to deal with die-cast aluminum polishing
    Automated and efficient die-casting polishing and deburring solutions
    Surface treatment methods for aluminum alloy die-castings
    What are the surface treatment processes for aluminum alloy die-castings

The descaling, polishing, brightening process of motorcycle pedal starter lever

How to polish the motorcycle pedal starter lever?

In this case, we will discuss the finishing and polishing process of descaling and deburring from a high-hardness forged iron motorcycle starter rod.

    • jerrylu
    • 2024-06-03
    • 0 Comments

     

motorcycle parts, starter levers, starter rod, deburring, descaling, polishing, brightening effect

1. Motorcycle starter lever before polishing
motorcycle parts, starter levers, starter rod, deburring, descaling, polishing, brightening before

Material:

Pig iron forgings

Apparance:

oxide scales and burrs

Shape:

S-shaped curve

Size:

300*7mm

Pre-polishing process:

Pig iron forging.

Post polishing process:

Finished or electroplated.

2. Requirements for finishing and polishing
  • The surface is smooth and burr-free.
  • Remove surface oxide scale.
  • Reduce surface roughness, increase gloss, and improve brightness.
3. Details of the finishing, polishing, deburring and descaling process for motorcycle parts (starter lever, starter rod, spark lever)
Process steps （1） Coarse finishing to remove burrs and scale （2） Fine polishing （3） Drying
Machine and Equipment Vibratory bowl Finishing Machine Vibratory bowl Finishing Machine Vibratory Dryer
Amplitude and speed highest and full speed highest and full speed highest and full speed
Tumbling Media angle cut cylinder ceramic deburring media ballcone stainless steel media corn cob polishing media
Abrasive to workpiece ratio 6：1 6：1 8：1
Finishing compound finishing liquid polishing liquid No
Water Appropriate amount, the liquid level should not exceed the tumbling media Appropriate amount, the liquid level should not exceed the tumbling media No
Finishing time 4 hours 30 minutes 30 minutes
Remark parts separated and picked up automatically, rinsed with water parts separated and picked up automatically, rinsed with water dry the water and wipe away the water stains
4. Effect after finishing and polishing
Rough deburring and descaling of motorcycle parts, starter levers, starter rod

deburring and descaling of forging motorcycle starter lever

Fine polishing and brightening of motorcycle parts, starter levers, starter rod

polishing and brightening of forging motorcycle starter lever

5. Additional information
  • Because the motorcycle starter lever accessories are made of pig iron forgings and the material is very hard, ceramic media with heavy cutting force is used to roughly remove scale and burrs. In order to fully finish the corners of the parts or the toothed inner wall of the inner ring, the shape of the ceramic media is a chamfered cylindrical tumbling deburring media, and the smooth curve of the cylinder itself can have a smooth surface on the starting rod. Smoother polishing effect. It should be noted that if the starting rod is made of aluminum forgings, then our tumbling finishing media cannot use ceramic media, but needs to use softer materialResin media (also called plastic media).
  • These motorcycle parts are not afraid of hitting each other, so in order to improve the screening efficiency, the finishing machine uses the vibrating bowl finisher with separator.
  • Iron workpieces are easily oxidized again when exposed to water and air. Therefore, we need to dry the water immediately after finishing and polishing.

6. Final summary
  • In this case, we demonstrate the process of deburring and descaling on the surface of a forged motorcycle workpiece, also called a starter lever, starter rod, and spark lever, and further improving the surface gloss and brightness.
  • This process is also suitable for polishing parts and components such as automobiles, bicycles, fishing gear, pumps and valves, sewing machines, equipment and tooling produced from forged iron.

error: 网站内容有版权保护!!