Blade manufacturing process of wood shredder

1. Check the weld strength: Grind the back of a shredder knife with a green silicon carbide grinding wheel and check the thickness of the solder layer. The thickness is required to be less than 0.15 mm. There should be no pores and lack of solder on the bottom surface of the tool tip support. The weld that is not filled with solder should not exceed 10% of the total length of the weld. If there are pores, the blade will crack when it is shredded. 

   2. Check the position of the shredder blade in the knife slot: If the blade is misaligned and sag exceeds the skill conditions, it should be re-welded.    

3. Check the welding strength: hit the blade with a wooden hammer or a copper hammer with medium strength, or hit the shank with a strong I hammer, at this time, the blade does not fall from the slot as qualified. Check the welding strength of the blade, not necessarily check them one by one, but also choose the checking method.   

 4. Check the flatness of the shredder blade: If there are significant pits on the blade, it indicates that the blade is overheated and deformed, and the new blade should be burned and re-welded.    

5. Check for cracks: After the shredder blade is cleaned by fire oil, if the blade is cracked. The kerosene penetrates into the cracks and black lines appear, which can be investigated with the naked eye. A magnifying glass of 10-40 times can also be used for investigation.