A variety of product quality problems will occur during the processing of aluminum coils. What are the causes of product quality problems? The following aluminum coil manufacturers briefly introduce for everyone:
1. Press in non-metallic materials
Key reasons: cold rolling process equipment standards are not clear; cold rolling process lubricating fluid is not quiet; processing process lubricating fluid spraying working pressure is not enough; billet surface scratches.
2. Scratch
The key reason: when the plate and belt touch the guide path, machinery and equipment in the production and processing process, they cause relative friction and cause abrasion; the inner hole of the cold coil is uneven, causing misalignment when the column furnace is quenched and rotated , Layer and layer scratches; poor support during cold rolling, aluminum coil manufacturer thinks that the false beam is shifted during cutting, causing scratches; casting and rolling project acceptance or packaging actual operation is not good, resulting in dragging between plates Scratched.
3. Knock
The key reason: the plate or coil collides with other objects during the whole process of transportation or storage; the plate or coil is caused by offending other prominent objects on the quenching rack or the car chassis.
4. Warped edge
Key reasons: excessive reduction during cold rolling; uneven grease distribution during cold rolling; improper adjustment of the cutting edge during cutting.
5. Breaking
The key reasons: the feeding of the multi-roll straightener is skewed; the support of the metal sheet is unbalanced during turning or transportation; the support of the oral epithelial cells of the upper stack is unbalanced.
6, collapse
The key reasons: poor supporting force during the whole process of rolling; external force is oppressed; the core compressive strength is low; the coreless waterproof coil is caused by quenching.
7. Cline
The key reasons: the blank material is not leveled; the tension control of the extruder opening and coiling is not good; the reduction amount is uneven, the sleeve size is shaking; the leveling roller is not well adjusted; the centering system is wrong during the whole coiling process; the roller system The flatness is not very good.
8, tower shape
The key reasons: the finished product inspection is not very good, and the tension control is not good; the automatic control system of the coiling centering adjustment is abnormal; the lead bonding is not stable during the coiling.
9, loose roll
The key reasons: the supporting force is uneven or too small during the whole coiling process; the working pressure of the pressing roller is very small when the material is opened; the steel chain or the buckle is not strong, which is caused by the lifting.
10. Flower glue
The key reason: the wrong operation of the front, back, left, and right support forces during the entire coil winding process; the expansion ring is not round or the inner lap during winding is not round, caused by the uneven distribution of ground stress after the aluminum coil manufacturer unloads the coil; the quality of the core is poor .
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