How to see the pros and cons of shredder blades

Quality is the foundation of an enterprise.The quality life of tire shredder blades greatly affects the service life and production costs of tire shredder blades. In order to ensure the production of good quality tire shredder blades and win the trust of more customers, it is urgent to improve the quality of tire shredder blades. Before viewing, the tire recycling machine blade should be sandblasted or quietly ground to remove the solder and impurities adhering to the surface of the blade, and cleaned with fire oil. The items and requirements reviewed are as follows:

I. Weld strength: Grind the back of a tire recycling machine knife with a green silicon carbide grinding wheel, and check the thickness of the solder layer. The thickness must be less than 0.15 mm. There should be no air holes and lack of solder at the bottom surface of the tip support. If there are air holes, the blade will crack when shredded.

Second, the orientation of the tire recycling machine blade in the sipe: If the blade is misplaced and sags over the skill conditions, the rule should be re-welded.

3. Welding strength: Use a wooden hammer or a copper hammer to strike the blade with a moderate force, or use a hammer to strike the arbor with a strong force. At this time, the blade does not fall from the sipe to be qualified. Check the welding strength of the initial film, not necessarily check them one by one, but also choose the viewing method.

Fourth, the flatness of the tire recycling machine blade: if there are significant pits on the blade, it is stated that the blade is overheated and deformed, and the new blade should be burned and re-welded.

Fifth, crack: After the blade of the tire recycling machine is cleaned by fire oil, if the blade is cracked. The kerosene penetrated into the crack and appeared black lines, which can be investigated with the naked eye. It can also be investigated with a 10-40x magnifying glass.

To check the blade crack, you can also use the color flaw detection method: select 65% of the oil, 30% of the transformer oil and 5% of the turpentine oil solution, add a little Sudanese red. Put the razor blade part in the solution for 10-15 minutes, then wash it with water, and apply--layer of white clay (kaolin). After drying it, investigate its appearance. If there is a crack on the blade,

Then the color of the solution is exposed on the white clay. It can be seen with the naked eye. The cracked tire shredder knife cannot be used and needs to be welded from scratch.

In order to ensure the process quality of the tire shredder blade, the tire recycling machine blade after welding should be carefully checked in order to find out the cause of the defect and improve it.