As the metal accessories of stone curtain wall, stone dry hanging parts, although they are auxiliary parts between the wall and the stone slab, they play a vital role in beautifying the building decoration with their strength and toughness. There are many types of dry hanging parts, and each type of hanging part has its own installation method. The dry hanging method is directly related to the curtain wall.

Structure, installation, cost and aesthetics. As for the hanging method of stone curtain wall, after it was introduced from abroad in the mid-1980s, it has been innovated day by day, evolving from pin-type and butterfly-type to the current back-hanging and seam-hanging methods. The development and progress of dry hanging technology has completely broken away from the monopoly of foreign technology and has become a national

The dry hanging technology independently developed in China has played a positive role in the reform and standardization of domestic dry hanging curtain wall decoration.

    This article analyzes the types, development, technical performance, methods, and development prospects of stone curtain wall hanging accessories, so that readers can have a more comprehensive and specific understanding and knowledge of stone dry hanging accessories, and at the same time provide a favorable reference basis for design and decoration material selection.

    1. Pin type

    This method uses pins and backing plates connected through holes in the edges of the panels. This type of dry hanging fixture and method was introduced from abroad in the mid-1980s, laying the foundation for domestic dry hanging fixtures and serving as a reference for the Ministry of Construction's industry standard (JC830-1998). This method relies on pins to apply force, resulting in a high concentration of stress at the pin holes.

According to the feedback from the completed projects, the stone material has local cracking and breaking at the stress concentration point, which is labor-consuming, time-consuming and material-consuming during operation. Now it has gradually been replaced by other methods.

    2. Butterfly (commonly known as upside-down flip.)

    The shape and method of this kind of pendant are a bit clumsy. The strength of the pendant has been destroyed during the processing and forming (except for high-quality stainless steel). During the construction, the thickness and curvature of the upper and lower turning heads force the groove to be widened, which can easily cause damage to the stone during installation. If the amount of glue used in processing the groove width is too large, the overall cost will increase.

The technology is a bit backward in use. The requirements for the material of the pendant are not clear, so it is not suitable for widespread use.

    3. Welding joint (also known as "Y-shaped" or "welding joint")

    This type of pendant is commonly used in current construction and is more advanced in installation than the previous two. It is easy to transmit force and reduces stone damage, but the high temperature during welding will produce "annealing" phenomenon. This greatly reduces the strength of the pendant. If the weld is not full, it will cause oxidation, rust and fall off. The firmness and safety are not guaranteed. Under the condition of accumulated load,

Wind or ground movement can cause fractures, causing the curtain wall to fall from the sky.