Operation process of some working procedures in aluminum-magnesium-manganese aluminum plate project

The installation of Al-Mg-Mn-Al sheet on the roof of a project is made by on-site processing. The detailed package of aluminum sheet size is accurate and strict according to the actual situation on site, which not only ensures the quality of the project, but also improves the construction progress, ensures the planned construction period and reduces waste, thus reducing the project cost. The specific operation process of some working procedures of this project is as follows:

A, fixed bracket installation:

The fixed seat is the support of the aluminum magnesium manganese plate, and it is the stress component of the load transfer sandalwood of the roof panel. Its installation quality directly affects the wind resistance of the aluminum magnesium manganese plate, and the installation error of the aluminum fixed seat will also affect the longitudinal free expansion and contraction of the aluminum magnesium manganese plate and the appearance of the aluminum magnesium manganese plate. Therefore, installing the aluminum fixed seat is the key process of roof engineering.

Firstly, several points of a roof panel installation control line are measured by station instrument, and the control line of aluminum magnesium manganese plate bracket pops up. After the control line is measured, two recheck lines will be measured. Based on the control line, determine the bracket position of each panel with a specific ruler. When the bracket is installed to the recheck line, check the bracket position deviation and control the bracket installation error within the specification requirements.

The number of Al-Mg-Mn aluminum plate supports determines the wind resistance of Al-Mg-Mn aluminum plate, so the spacing of Al-Mg-Mn aluminum plate supports is arranged in strict accordance with the design drawings, and it is actually measured and retested on site. Al-Mg-Mn plate brackets are fixed with self-tapping screws. Self-tapping screws must be qualified products, and the number of self-tapping screws on each bracket cannot be reduced. Self-tapping screws must be provided with aging-resistant sealing rings. When installing the panel fixing seat, the heat insulation pad below them must be installed at the same time.

Second, the insulation cotton installation:

Before the Al-Mg-Mn board is put in place, the thermal insulation cotton shall be paved, and the stacking position of thermal insulation cotton shall be kept at a height of about 300mm from the ground. At the same time, rain-proof cloth shall be used to protect it from rain and moisture. Before installation, the quality of thermal insulation cotton must be checked. In the project where the wet cotton is forbidden to be used, double-layer thermal insulation cotton should be staggered and overlapped to ensure the overall tightness of thermal insulation layer and prevent the phenomenon of cold bridge.

Three, aluminum magnesium manganese plate in place:

According to the actual situation, reasonably arrange the hoisting equipment to hoist the aluminum magnesium manganese aluminum plate to the roof, and then the operator lifts the plate to the installation position, first check whether the small side of the front aluminum plate is fully buckled into the fixed seat, and then put it in place. When it is in place, first control the aluminum plate end line, and then press the lap edge into the lap edge of the front aluminum plate. Check whether the lap edges can be tightly joined. If not, find out the problem and deal with it as soon as possible. If the lap edges are fully engaged, use a manual bite device to temporarily engage the lap edges at intervals of 3m to prevent the plate ribs from popping out of the fixed seat under the action of internal stress.

Four, lock edge:

When biting the edge, pre-lock it with a manual splint device, mainly pre-lock the fixed seat to ensure that the supporting end of the fixed seat is buckled into the plate rib. After manual occlusion, carry out electric edge locking, which should be slow and continuous; Formal hemming shall be carried out slowly and continuously, and two people shall cooperate in hemming. One person shall check and stamp Al-Mg-Mn aluminum plate before to ensure tight bite, and the other person shall operate the hemming machine to lock the hemming, so as to ensure that the fixed seats are fully buckled into the plate ribs and ensure the wind resistance of the whole roof.

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