[China Aluminum Industry Network] (a) uneven board, not vertical, narrow seams, inconsistent height
1. Reasons: The horizontal and vertical out-of-frame of the skeleton, the unevenness of the facade, the poor installation of the board surface, and the misalignment of the holes;
2, control:
(1) Begin by installing embeds and expansion bolts. When the skeleton is installed, it shall be horizontally and vertically drawn, the plane shall be flat, and then the theodolite shall be inspected for process acceptance;
(2) Positioning of board and skeleton, drilling must be accurate;
(3) When the board is installed, it must not be arbitrarily installed. Before installation, it is necessary to check the dimensions of the plate and check the shape. The inspection can be performed without errors.
(2) Strict joint sealing, unevenness, bubbles and water seepage
1, the reason
(1) At the end of the caulking, the surface of the panel is closed with polyethylene foam. When the sealant is used to fill the sealant, a certain pressure is formed at the end of the caulking, so that the panel seam is not firmly bonded and the seal is not strict;
(2) The operator is unfamiliar with the operation, the distance from the muzzle to the caulking at the time of caulking is inconsistent, the pressure is not uniform, the thickness is uneven, and the joints are numerous and bring air, causing the surface of the sealant to be uneven, with bubbles and Water seepage phenomenon;
(3) Material Problems: There is a problem with the quality of silicone sealants.
2. Control measures
(1) better material selection and better tool performance;
(2) Carefully insert the seal packing, keep the distance from the plate surface of the filling surface, and embed the sealant with the same depth so that the joints are dense and the seam surface is straight;
(3) Operators are skillful in their skills, keep the caulking guns at a uniform speed, keep the same distance, remove the air with the plug, and smash the air bubbles as soon as they appear, and use a trowel to flatten the gas.
(c) Inaccurate handling, uneven, and unsealed
1, the reason
At the end of the construction according to requirements, installation is not detailed, improper method.
2. Control measures
(1) Do a well-planned collection before construction, and use reasonable collection plans for different structures and conditions;
(2) Strict operation during installation and mastering of essentials.
(d) Surface contamination, dents
1, the reason
(1) The protective film was removed prematurely and the measures to protect the finished product were improper;
(2) Improper protection of finished products during construction of the next process, resulting in collision with the surface of the board.
2. Control measures
(1) Do not remove the protective film prematurely; remove it when removing the scaffold;
(2) Work out feasible product protection measures during work;
(3) Clean up and clean the polluted place in time.
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