Aluminum alloy windows and doors “C” tank and the “U” slot differences
On the market at present China aluminum alloy doors and Windows profiles of the hardware of a u-shaped slot and C type two kinds, aluminum alloy doors and Windows from Europe the use of aluminium alloy door system, the introduction of the aluminium alloy door system in Europe only European standard slot a aluminum alloy special hardware noth, and is now on the market of China of the so-called C chamfer; U hardware noth is window of model steel door European standard noth, and because of the aluminium alloy door hardware material and structure to the special requirements of aluminium alloy door hardware price is on the high side, and the window of model steel door hardware price than aluminum sliding window and door hardware low about 40%, then there are aluminium alloy profile of window of model steel door hardware manufacturers will be transplanted into the slot of aluminium alloy door also appeared on the profile of the aluminium alloy door model U notch.
3 X European aluminum alloy doors and Windows system does not use the model U notch reason has the following:
1, U notch design principle of hardware: u-shaped slot (hardware) in Europe is for plastic doors and Windows and wood doors and Windows of special hardware noth, and U the hardware connection means USES slot self tapping screw bolt connection way installed hardware. But if used in aluminum alloy doors and Windows, when installing U slot hardware with self-drilling screws load produced by the door window switch longitudinal shearing force, because since the attack nails is far greater than the hardness of aluminium alloy profile, tapping the nail screw to buckle aluminium alloy profile damage, causing installation holes expand, in the long run hardware of the screw connection will appear tripping. Because of window of model steel door for steel lining just, hardness and material since the attack nails equal won’t happen installation holes expand and hardware tripping phenomenon. Because model U notch (hardware) used in aluminum alloy doors and Windows do not conform to the mechanical design of the mechanical materials strong design principle, out of the doors and Windows hardware security consideration, European aluminum alloy doors and Windows does not use the model U notch (hardware).
2, U notch in the metal aluminum folding door corrosion ooze water: U notch is the material of hardware for as long as steel, when hardware through the steel tapping was connected to the aluminum fall for it by rain and damp air erosion happens more apparent chemical reaction (as the saying goes, “alkali phenomenon) affect the use of door window, destruction of the doors and Windows waterproof construction.
3 C, hardware design principle slot advanced: C noth hardware setup is depend on stainless steel nails top tight force and machine screws stainless steel the burr and hardware clamping force slot to ensure the installation of hardware firm degrees, stainless steel nails top tight in the material surface will generate about 0.5 ~ 1.0 mm of local deformation make stainless steel nails and aluminum close together security hardware in force does not occur when the displacement.
4, C noth hardware convenient installation: without a mounting holes, do not use a since the attack
nails connection, easy installation, the equipment (electricity, gas) auxiliary condition depends on the low, can realize the on site installation.
5, material contrast: C is the aluminum alloy special slot hardware (metal) doors and Windows hardware, and model U notch hardware from plastic doors and Windows, from the material requirements to hardware stem a hardness requirement will lower than C noth hardware.Kdsbuilding expert states:for example: C of the hardware of slot hardware material basically is out of aluminum, zinc base alloy die casting, carbon nitrogen were permeability steel, stainless steel, mos2 nylon, surface treatment for dacro surface treatment, RAL surface color spraying (and ferrari chassis anticorrosive processing the same), through the strict corrosion test, won’t happen and alkali phenomenon.
6, C type of hardware structure security slot connection: C use high hardness slot hinge of stainless steel the burr (the burr adopt special tectonic), in tightening bolt when tightened on the burr the special structure of the teeth to bite into the same will be like the surface of aluminium alloy profile, form a number 0.2 ~ 0.5 mm of local deformation (small pit), so as to ensure the safety performance of the casement, put an end to the connection screw and aluminum hardness produced tripping range and appear casement Windows (the door) window (the door) fan falls off phenomenon.
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