Application of alloy aluminum plate in the field of transportation and building structure

In the emerging application field, the consumption of aluminum is gradually promoted by changing ideas, mature technology, policy guidance and support. It is understood that the key areas to expand the application of aluminum at present include: transportation, building structure and electricity. In addition, it also includes aluminum alloy pallets, aluminum alloy flood control facilities, aluminum alloy bridges, aluminum foil packaging and other products and fields. Among them, the application analysis in the field of transportation and building structure is as follows:

1. Traffic field:

Scope of business: Expand the application of all-aluminum trailers, aluminum alloy open-top coal trucks and aluminum alloy plates for precision automobiles.

The application of aluminum profile in transportation field can reduce self-weight, increase load and prolong service life, which is of great significance for energy saving and emission reduction, and improving economic benefits of transportation industry and highway transportation efficiency.

2. The field of building structure:

Scope: Expand the application of aluminum alloy building formwork and aluminum alloy enclosure board.

(1) Expand the application of aluminum alloy building formwork;

At present, the application ratio of aluminum alloy formwork in China is less than 1%. The increasing requirements of large and medium-sized construction enterprises for standardization, industrialization and industrialization of building construction, as well as the increasing requirements of the public for housing quality, have greatly promoted the application of alloy aluminum plates. In recent years, due to the rapid development of real estate industry, the production scale of building formwork industry in China has maintained a growth rate of about 10~15%.

(2) Expand the application of aluminum alloy sealing plate;

In civil buildings, aluminum alloy sheets have been widely used in large and medium-sized infrastructure projects, especially long-span and complex-shaped projects, such as roofs and walls of public buildings such as airport terminals, convention centers and gymnasiums. However, in industrial buildings, steel structure system and metal plate enclosure structure system account for about 70% of the total construction volume, and aluminum alloy is rarely used.

With the growth of demand for overall, strategic and public welfare projects, such as agricultural infrastructure construction, affordable housing projects, and reconstruction of dilapidated houses in rural areas, the demand for alloy aluminum plates will increase greatly.

Analysis of common problems of alloy aluminum curtain wall and preventive measures

A, alloy aluminum curtain wall seam seal is lax, uneven, there are bubbles and water seepage phenomenon:

1. Reason:

(1) At the end of the joint filling process, use polyethylene foam to block the surface of the board. When the sealant gun is used to fill the sealant, a certain pressure is formed at the end, which makes it unable to firmly adhere to the gap and the seal is not strict.

(2) The operator is not skilled. When caulking, the distance between the muzzle and the caulking position is inconsistent, and the pressure is uneven, resulting in uneven thickness, more seams and air, resulting in uneven sealant surface, bubbles and water seepage;

(3) Material problem: There are quality problems in silicone sealants.

2. Prevention and control measures:

(1) Good material selection and tool performance;

(2) Carefully insert the sealing filler, keep the distance between the surface of the filler and the board surface consistent, and embed the sealant at the same depth to make the joint compact and flat.

(3) The operator should be skilled, hold the seam pressing gun tightly, keep the speed uniform and the distance consistent, and at the same time remove air. Once air bubbles appear, pierce them and smooth them with a trowel to remove air.

Second, the alloy aluminum curtain wall surface pollution, dents:

1. Reason:

(1) premature removal of protective film and inappropriate finished product protection measures;

(2) In the construction process of the next working procedure, the finished product is improperly protected, which affects the surface of the plate.

2. Prevention and control measures:

(1) Don't remove the protective film prematurely. When dismantling scaffolding, it is better to dismantle it;

(2) Formulating feasible protection measures for finished products;

(3) Clean and scrub the polluted places in time.

Three, convergent processing is not reliable, smooth, not sealed:

1. Reason:

The construction was not carried out as required, the installation was not careful and the method was improper.

2. Prevention and control measures:

(1) Before the construction of alloy aluminum curtain wall, make a closing plan and adopt a reasonable closing plan according to different structures and conditions;

(2) Strictly operate during installation and grasp the essentials.

Four, the board face is uneven, not vertical, seam width, height is inconsistent:

1. Reasons: horizontal and vertical deviation of the frame, uneven elevation, out-of-tolerance of board installation and dislocation of holes;

2. Preventive measures:

(1) Be careful when installing embedded parts and expansion bolts. When installing the frame, draw lines horizontally and vertically, and the plane should be flat, and use theodolite to check the process acceptance;

(2) The positioning and drilling of plates and frames shall be accurate;

(3) When installing the alloy aluminum plate, it is not allowed to install it at will, and it must be installed according to the scheme and buckle position. Check the size of the plate before installation.

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