Molding Process
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ASA building material gutter deformation
Problem Phenomenon
After ASA gutters and roof fittings are installed, summer high temperature causes deformation and sagging, joints disconnect, and dimensional stability complaints concentrate.
Cause Analysis
Under direct sunlight on the roof, the surface temperature can reach above 70°C, approaching the ASA heat resistance boundary; long strip products accumulate thermal expansion deformation; excessive installation fixing point spacing aggravates sagging.
Solution
①Structural design increases fixing point density; ②deep groove cross-section enhances stiffness; ③evaluate heat-resistant reinforced grades; ④installation reserves thermal expansion gaps.; After adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
The thermal deformation of ASA building materials is a joint problem of material boundary and structural design; fixing point design is more economical than changing materials; the actual roof temperature far exceeds air temperature.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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