The descaling, polishing, brightening process of 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.

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

Pig iron forgings

oxide scales and burrs

S-shaped curve

300*7mm

Pig iron forging.

Finished or electroplated.

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

deburring and descaling of forging motorcycle starter lever

polishing and brightening of forging motorcycle starter lever

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.

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.