Door and window installation works in the "three test" specifically refers to what?
Wind pressure resistance refers to the ability of the doors and windows to shut down normally when the doors and windows are normally closed, such as cracking, panel breakage, local yield, Detection method is to test the specimen under transient wind pressure, resistance to damage and dysfunction.
??????? Wind pressure performance is actually the assessment of the external doors and windows under the action of external force to achieve the required deformation of the amount of deflection when the deflection value of the wind pressure value. In a certain pressure or strength of the doors and windows outside the force bar deflection value of the smaller the product that the better the wind pressure performance.
Watertight performance: outside the doors and windows normal shutdown state, while the role of wind and rain at the same time, to prevent the ability of rain leakage;
?????? The standard for the purpose of detecting the watertight performance of the external doors and windows is "grading of airtightness, watertightness and wind pressure resistance of buildings outside doors and windows". This standard specifies the requirements of the testing equipment, the method of performance testing and the classification of watertight performance index. The testing equipment is simulated in the storm outside the weather in the simulation of the state, the use of pressure systems, water supply systems and pressure and water flow system on both sides of the external pressure difference between the doors and windows, and then determine the pressure when severe leakage Difference, and finally determine the watertight performance coefficient and grade of the outer doors and windows.
Air permeability, also known as air tightness, refers to the external doors and windows in the normal closed state, to prevent air penetration capacity;
?????? It is the assessment of the doors and windows in the closed state, to prevent the ability of air penetration. Outside the windows and doors airtight performance of the level of great impact on the loss of heat, air tightness, the better the heat exchange is less, the impact on the room temperature is also smaller.
?????? The measure of airtight performance is based on the standard state, the pressure difference between the inside and outside the window is 10Pa when the unit length of air penetration and air permeability per unit area as an evaluation index.
Three-phase test refers specifically to the anti-wind pressure performance of doors and windows, air permeability, rainwater leakage performance testing, construction also referred to as wind pressure, air tightness, watertight.
