Analysis of how to choose aluminum alloy door and window hardware

With the release of a series of national standards for building energy efficiency, China's requirements for building energy efficiency have been further strengthened and refined. How to choose aluminum alloy door and window hardware for building doors and windows that have undertaken important energy-saving and emission reduction tasks? How to improve the energy-saving performance of doors and windows? It is a topic of discussion in the current door and window industry. Hardware for doors and windows is an important component in the door and window system. This article will briefly introduce the role and selection of aluminum alloy door and window hardware in the door and window system.

What is a door and window system

A door and window system is a system composed of interconnected and interacting things. It can also be said that a system is a whole composed of related parts. A comprehensive analysis of the constituent units and the final composition of the whole is necessary. Simply referring to a certain unit or only focusing on the macro whole is not a systematic approach. A system is an organic whole composed of different elements, and the elements of the system are relative to each other. In one system, it is an element, while at another level, it can be a system, and there exists a relationship between the whole and the parts.

Door and window hardware system

In the usual sense, door and window hardware is just a component of the door and window. Although there is also a saying that "hardware accessories are the heart of door and window systems," it has not received true attention in practice. Door and window hardware is an organic combination of components such as handles (provided by industry encyclopedias), transmission locking components, hinge components, auxiliary components, etc. It serves the subsystems of door and window systems through system matching and integration technology. Similarly, there is a need for systematic technical support and after-sales service. We cannot simply talk about a particular hardware product, nor can we abandon individual hardware components and empty talk about the concept of "door and window hardware systems". A systematic concept should be established to make corresponding plans for various hardware products. Within the framework of a large "door and window system", changes in profiles, glass, rubber strips, processing techniques, and even door and window opening methods require corresponding changes in door and window hardware to better serve doors and windows.

Selection of Door and Window Hardware

When considering the issue of hardware selection in door and window systems, it is necessary to first have a comprehensive research and understanding of the door and window system, especially the design and selection of profile dimensions. The selection of profiles and hardware should be based on the profiles before selecting door and window hardware components. Sometimes, this situation can lead to the inability to find matching hardware due to non-standard profiles. Most real estate developers now consider the combination of profiles and hardware before making a decision. The selection of accessories should consider their universality and rationality, as well as the production process and material quality of the accessories. Of course, there are also options that have been selected in sequence, which will definitely bring difficulties to hardware selection. Any product, including hardware accessories, has its scope of application, and there is no universal hardware accessory that can be used to match all door and window profiles.

Firstly, it is necessary to consider the wind pressure resistance, airtightness, and stability required for doors and windows. A hardware manufacturer with quality assurance and reasonable hardware accessories should be selected based on the size of the door and window sash, the cross-sectional shape of the profile, and the opening method. When there is a requirement for wind pressure resistance, the number and layout plan of locking points should be determined based on the local wind pressure standard value and floor height to ensure the required wind pressure resistance, airtightness, and stability requirements of doors and windows. To ensure safety while considering factors determined by the width and weight of doors and window sashes, select the load-bearing level, specifications, dimensions, etc. of load-bearing components such as window hinges (hinges), sliding braces, and pulleys.

Wind resistance calculation of doors and windows

When selecting hardware for doors and windows, the first step is to ensure the three functions of the doors and windows (wind resistance, water tightness, and air tightness), as well as the performance requirements for insulation, heat insulation, and sound insulation. Due to different regional climates, the safety and wind resistance requirements for doors and windows vary. It is necessary to calculate comprehensively based on various parameters to ensure the required performance requirements. The calculation of the number of lock points is quite complex. Here, we recommend a simplified formula for calculating the number of lock points: let n be the number of lock points; W is one leaf wide; H is one high; Wk - standard wind pressure; If the safety factor is 2.5 times, then n=W x H x 2.5 Wk/0.8 (pieces). Calculation example: For a building in a certain area, the calculated Wk is 2.2KN/m2. The required number of locking points for windows with a height of 1.2 and a width of 0.6 meters is N=1.2 x 0.6 x 2.5 x 2.2/0.8 ≈ 5. The above is an introduction by Paige on how to choose aluminum alloy door and window hardware, including information on door and window systems, door and window hardware systems, and wind pressure resistance calculations for doors and windows!