NEWS & BLOG
Shredder Blade Manufacturing Process
In order to ensure the quality of the shredder blades, the shredder blades after welding should be carefully reviewed to find out the cause of the defects. Before the inspection, the shredder blades are sandblasted or quietly ground to remove the solder and impurities adhering to the outer surface of the blade, and cleaned with kerosene. The items and requirements for viewing are as follows: First, check the weld strength: use a green silicon carbide grinding wheel to grind the back of a shredder knife, check the thickness of the solder layer, the thickness requirement is below 0.15 mm. There should be no porosity and solder deficiency at the bottom of the tool tip support. The welds that are not filled with solder should be no more than 10% of the total length of the weld. If there are air holes, the blade will crack when shredded.
Product description

In order to ensure the quality of the shredder blades, the shredder blades after welding should be carefully reviewed to find out the cause of the defects. Before the inspection, the shredder blades are sandblasted or quietly ground to remove the solder and impurities adhering to the outer surface of the blade, and cleaned with kerosene. The items and requirements for viewing are as follows:
First, check the weld strength: use a green silicon carbide grinding wheel to grind the back of a shredder knife, check the thickness of the solder layer, the thickness requirement is below 0.15 mm. There should be no porosity and solder deficiency at the bottom of the tool tip support. The welds that are not filled with solder should be no more than 10% of the total length of the weld. If there are air holes, the blade will crack when shredded.
Shredder
2. View the orientation of the shredder blade in the sipe: If the blade is misaligned and the sag exceeds the skill condition, the rule should be re-welded.
Third, check the welding strength: use a wooden hammer or a copper hammer to strike the blade with medium strength, or use a hammer to strike the knife bar with a strong force. At this time, the blade does not fall from the sipe to pass. Check the blade weld strength, not necessarily one by one, and also use the view method.
4. View the flatness of the shredder blade: If there are significant pits on the blade, clarify that the blade is overheated and deformed, and the new blade should be burned and re-welded.
5. Look at the crack: If the shredder blade is cleaned by kerosene, if the blade has cracks. The kerosene penetrates into the crack and a black line appears, which can be investigated with the naked eye. It can also be investigated with a magnifying glass of 10-40 times.
Look at 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 solution, add some Sudan red. Place the blade part of the turning tool in the solution for 10-15 minutes, then wash it with water, apply a layer of white clay (kaolin), and then investigate the appearance after drying. If there is a crack on the blade, the color of the solution will be in the clay. It is revealed and can be seen with the naked eye. Cracked shredder blades cannot be used and require welding from scratch.
Zhangjiagang Qinfeng Machinery Co., Ltd. is a professional manufacturer of waste plastic recycling equipment. The series of recycling equipment includes shredder, plastic shredder, crusher, plastic crusher, pipe shredder, strong crusher, PET bottle cleaning production line, PE film cleaning line, PP plastic cleaning line and other waste plastic recycling equipment.

Technical parameter
Video Show
Related products
Contact us

Leave a Reply

Your email address will not be published. Required fields are marked *

Zhangjiagang Qinfeng Machinery Co.,Ltd
Tel: +86-512-58200823
Fax: +86-512-58200820
Mobile: +86-13951133895
ADD: NO.358,Jiangjin road zhangjiagang city,Jiangsu province,China.
E-mail: sales@qinfengmachine.com / 468921@qq.com
Contact us
Tel: +86-512-58200823
Fax: +86-512-58200820
Mobile: +86-13951133895
ADD: NO.358,Jiangjin road zhangjiagang city,Jiangsu province,China.
E-mail: sales@qinfengmachine.com / 468921@qq.com