The Repair Method of Charcoal Machine Propeller

Gongyi Tongli Machinery Factory is specialized in manufacturing and exporting of charcoal equipments and charcoal forming machine. Screw propeller is the main and important parts of the charcoal machine. Propeller is quick wearing but it can be repaired and reuse. Every eight hours need to be repaired with wear-resistant electrode. The propeller should be welded and grinded after using about five to seven days. And, nearly a month, it needs to be replaced with a new one.



How to repair charcoal machine propeller? As a professional charcoal machine manufacture, Gongyi Tongli Machinery Factory will offer the repair method of charcoal machine propeller to you.

The ends of the propeller parts require welding preheat temperature reaches about 350 ℃.
Use special electrode DC welder, adjust the current in the 150A or so.
According to the ends of the anterior horn propulsion wear layered surfacing, surfacing every layer, welding slag must be removed, and then a second layer of solder. Welding thicker than the required thickness 1-2mm, welded propeller should not slag, porosity and other defects.
After welding, the welding portion inserted into the dry lime or kelp, the insertion depth of the three lead over cooling.
Cooled to below 50 ℃ when removed, on the Green silicon carbide grinding wheel, grinding is not allowed overexert or localized overheating, cooling water or other liquids.
Grinding, the spiral ends 360 º rake angle at the circumference of the 2 º, evenly and gradually increased to the end portion of the rake angle to 20 º ± 1.5 º, then this section rake angle of ascent, without potholes or uneven uniform and so on.
As shown above, if the peripheral portion of shaft 115mm long wear more than 6mm, on the following process repaired.
Welding process as previously preheated at 115mm long cylindrical surface evenly with J422 carbon electrode surfacing over the figure of the standard cylindrical size 1-2mm.
Insert dry lime or ash and cooled to below 50 ℃ for grinding. Grind until its circumference jerk value less than 2mm, and the circumferential surface without obvious punch.
Grinding good propulsion, no percussion or impact, to avoid damage to the welding surfaces and other parts, should be carefully stored, ready for use.

If you have any questions about charcoal machine or charcoal machine propeller, please do not hesitate to contact us, we will provide you cost-effective belt conveyor and professional technical guide to you.

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