Email:dfh8@ningbodfh.cnNingbo Defa Technology Co.,Ltd.

Ningbo Defa Technology Co.,Ltd.

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Ningbo Yinzhou Defa Aluminum Profile Accessories Co.,Ltd
Add:No.44 Lengshui'an Road, Yinjiang Twon, Haishu Zone, Ningbo, China
Factors of crack on surface of aluminium profiles

Aluminum surface cracks: (I): coefficient of aluminum extrusion, extrusion temperature is too high (rod, tube, mold temperature), the extrusion speed too fast. (Ii): pressure instability, highs and low, or more speed speed difference between obvious gear conversion process quickly. (Iii): on the aluminum Extrusion head-end pressure (punching) too fast, end running speed or do not slow down, dead-Al a lot of penetration. (Iv): the rods are of poor quality, great burn, large Crystal, lax. Discard (V3) is too thin. (E): design and manufacture of extrusion die velocity than a serious imbalance is not reasonable.

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