Wuhan handern Plastic Wire Mesh Production Failure Analysis
DATE：2020/4/22 8:21:23 / READ： / SOURCE：This station
Wuhan handern Plastic Wire Mesh Production Failure Analysis
1. The plastic mesh is irregular, and there is a phenomenon of merged or paste holes.① The temperature of the forming mesh material is too high. www.handern.com Hollow board equipment
② There are damaged parts in the grooves of the wire forming material on the inner and outer die.
③The working coaxiality error of the inner and outer dies is large (may be the processing accuracy does not meet the requirements or the assembly accuracy of the two parts is not enough), so that the wire material is unevenly distributed on the circumference of the die
④ Uneven temperature control of the mold body www.handern.com Hollow board equipment
⑤ The size of the drawing cylinder or the mold of the set sleeve is too large.
Second, the mesh wire is extruded from the die mouth and has a broken wire phenomenon
① The filter is broken, and there are impurities in the melt.
② There are damaged parts in the grooves of the wire forming material on the inner and outer die.
③ The raw material is moist and the water content is high, so it should be dried.
④The additive and resin in the raw material are mixed and plasticized unevenly
3. The wire mesh size is not correct
(1) Insufficient width and size
①Small size of stretch tube or setting sleeve.
②The distance between the cooling water level and the die outlet is too small, and the filament cools down too quickly.
③The cooling water temperature is low. www.handern.com Hollow board equipment
④The speed of the traction roller is too fast.
(2) The width is larger than the size requirements
①Large size of stretch tube or setting sleeve
②The distance between the cooling water level and the die outlet is too large, and the temperature of the wire is slower.
③The speed of the traction roller is slow.
④The cooling water temperature is too high. www.handern.com Hollow board equipment
4. The wire mesh is uneven
① The mesh size is not uniform, and the die groove may be damaged.
②The cooling water level is not stable, and the cooling rate of the mesh is not consistent.
③The temperature of the cooling water is unstable
④The working speed of the traction roller is not stable. www.handern.com Hollow board equipment
Author：admin