Automated finishing and polishing technology for cast iron parts

How to deburr, descale, polish, brighten the cast iron parts?

Items cast from molten iron are collectively called cast iron parts. Due to the influence of the manufacturing process, defects such as pores, pinholes, slag inclusions, cracks, pits, rust spots, burrs, and flash often occur. Do you know how to automatically remove burrs, flash, rust and scale, and polish and brighten cast iron parts? In this case, we will share the process technology and methods of deburring, derusting and descaling, and polishing brightness of an electric hardware used in the power industry – steel foot cast iron parts. This polishing process solution is also applicable to the surface polishing of other hard metal casting parts.

    • jerrylu
    • 2024-06-03
    • 0 Comments

     

deburring, derusting, descaling, polishing, brightening effect of precision bearing steel casting iron feet

1. Cast iron steel feet before polishing
The surface burrs and oxide scale of cast iron feet before polishing

Materials:

cast iron

Appearance:

thick oxide skin on the surface

Shape:

barbell-shaped iron castings

Size:

40*200MM

Pre-polishing process:

rolling

Post-polishing process:

galvanizing

2. Finishing and polishing requirements
  • deburring, descaling
  • smooth, bright surface, no burrs, no oxide scale
3. Cast iron steel foot polishing process details:
Process steps (1) rough finishing of deburring, descaling (2) fine polishing (3) vibratory dryer
Machinery and equipment vibratory finishing machine vibratory finishing machine vibratory dryer
Speed highest highest highest
Tumbling media Angle cut cylinder ceramic media Spherical stainless steel media corn cob polishing media
Abrasive media to workpiece ratio 4:1 6:1 8:1
Finishing and polishing compound finishing liquid polishing liquid no
Water appropriate amount,the liquid level does not exceed the tumbling media appropriate amount,the liquid level does not exceed the tumbling media no
Polishing time 60 minutes 30 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. Cast iron feet after finishing and polishing
deburring, descaling, polishing, brightening of steel foot cast iron parts

rough finishing

steel foot cast iron parts after finishing and polishing

after fine finishing and polishing

5. Additional instructions
  • Cast iron parts are generally medium-to-large product components, and most of the surface treatments are done by sandblasting and shot blasting. However, this product is small in size and large in quantity, with a daily output of several tons. In order to improve efficiency and surface treatment quality, a vibratory finisher is used with heavy-cutting-force angle cut cylinder tumbling media for rough finishing. The sharp edge of the ceramic media can reach into grooves, corners, and gaps to remove burrs and oxide layers.
    For brightening polishing, a general-purpose vibratory polishing machine is used. The polishing media is made of stainless steel ball specially designed for polishing brightness, which can improve the surface brightness and achieve a shiny effect.
  • In order to improve the anti-rust and anti-corrosion performance of the product after water treatment, it is immersed in a anti-rust liquid for anti-rust treatment after polishing. Finally, a vibrating dryer is used to dry the surface moisture and dry it.

6. Final summary
  • In this case, we demonstrated the process of deburring, descaling, derusting, polishing, brightening of a steel foot of cast iron product using a polishing machine.
  • If you need professional technical support for the following polishing issues of cast steel parts, you can refer to the above cases:
    Polishing of cast iron parts
    How long does it usually take to polish cast iron parts
    Methods for deburring cast iron parts
    Automation of deburring cast iron parts
    Rust removal of cast iron parts
    How to remove rust from cast iron
    How to remove oxide scale from cast iron parts
    What are the methods for removing rust from cast iron parts
    How to remove rust from cast iron parts
    Polishing of cast iron parts
    Polishing of castings
    How to polish iron products
    Polishing and finishing of cast iron
    Polishing process of cast iron
    How to remove burrs from iron parts
    Descaling of castings
    Polishing process of cast iron
    What are the methods and techniques for polishing castings
    Polishing technology of pig iron
    Polishing process of electric hardware

How to deburr, descale, polish carbide mechanical seal parts?

Finishing and polishing technology of mechanical seal parts of cemented carbide products

Mechanical seals are precise and complex basic mechanical components. Commonly used metal materials include hard alloys (such as tungsten carbide), high silicon iron, nickel-chromium steel, chrome steel, bronze, carbon steel and cast iron, etc., which will produce burrs, flash, scratches, oxide scale and other defects during the manufacturing process. Do you know what kind of finishing and polishing process mechanical seal parts need to go through to obtain a satisfactory surface effect? ​​In this case, we will share the process technology and methods of deburring, derusting, descaling, polishing and brightening of a hard alloy mechanical seal product. This polishing process solution is also suitable for the surface polishing of sealing parts made by other hard metal materials.

    • jerrylu
    • 2024-06-03
    • 0 Comments

     

deburring, derusting and polishing effect of carbide mechanical seal

1. Cemented carbide mechanical seal before polishing
burrs and oxide scale on the surface of mechanical seals of carbide parts before polishing

Materials:

tungsten carbide

Appearance:

edge burrs, surface oxide scale

Shape:

circular

Size:

D 50MM

Pre-polishing process:

powder metallurgy

Post-polishing process:

product assembly

2. Finishing and polishing requirements
  • chamfer and remove flash, grooves without burrs.
  • smooth, bright surface, no burrs, no oxide scale.
3. Details of carbide mechanical seal polishing process:
Process steps (1) rough finishing of chamfering, deburring, descaling (2) fine polishing (3) anti-rust drying
Machinery and equipment centrifugal disc finishing machine centrifugal barrel finishing machine vibratory dryer
Speed highest highest highest
Tumbling media straight cut tri-angle ceramic media 3P finishing media corn cob drying media
Abrasive media to workpiece ratio 4:1 6:1 8:1
Finishing and polishing compound finishing liquid polishing liquid no
Water appropriate amount, liquid level is 20mm above the tumbling media appropriate amount, liquid level is 20mm above the tumbling media no
Polishing time 30 minutes 30 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. Finishing and polishing effect of cemented carbide mechanical seal
deburring, descaling, chamfering, polishing, brightening effect of cemented carbide parts mechanical seal
mass finishing, polishing, burnishing, brightening effect of cemented carbide parts mechanical seal

5. Additional instructions
  • The hardness of tungsten carbide is generally between HRA87 and 94. The product volume is not large, so a centrifugal disc finisher is used, with heavy cutting force straight cut tri-angle ceramic media for rough finishing. The sharp tip of the tumbling media can reach into the groove to remove burrs and chamfers.
    Fine polishing uses a centrifugal barrel finisher with high centrifugal force, so the tumbling media uses high-hardness 3P fine polishing media, which can cut lightly, further reduce the roughness and improve the surface brightness.
  • In order to improve the anti-rust and anti-corrosion performance of the product after water treatment, it is immersed in a anti-rust liquid for anti-rust treatment after polishing. Finally, a a href=”http://www.shinetec.tech/index.php/en/product/vibratory-dryer-vibrating-drying-machine/” target=”_blank” rel=”noopener”>vibrating dryer is used to dry the surface moisture and dry it.

6. Final summary
  • In this case study, we demonstrate the process of chamfering, deburring, descaling, polishing and brightening the surface of a mechanical seal part made of tungsten carbide.
  • If you need professional technical support for the following mechanical seal product polishing issues, you can refer to the above cases:
    Mechanical seal polishing process technology
    Mechanical seal deburring process technology
    Mechanical parts polishing process technology
    Mechanical parts deburring process technology
    Metal parts polishing
    What abrasive is suitable for carbide polishing
    Introduction to carbide polishing technology
    Carbide deburring polishing process
    How to polish carbide
    What to use for polishing carbide
    Methods for descaling of carbide
    Cemented carbide surface polishing
    What finishing and polishing materials are used for carbide
    Mirror polishing of carbide

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.

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