铝合金门窗设备的日常的检查原则

（１）零件的几何精度包括尺寸、形状和表面相互位置精度。经常检验的是尺寸、圆柱度、圆度、平面度、直线度、同轴度、平行度、垂直度、跳动等项目。根据维修特点，有时不是追求单个零件的几何尺寸，而是要求相对配合精度。
(1) the geometric accuracy of parts includes the size, shape and surface position accuracy. The dimensions, cylindricity, roundness, flatness, straightness, coaxiality, parallelism, perpendicularity and runout are often examined. According to the characteristics of maintenance, sometimes it is not the geometric dimension of a single part, but the relative matching precision.
（２）零件的表面质量包括表面粗糙度，表面有无擦伤、腐蚀、裂纹、剥落、烧损、拉毛等缺陷。
(2) the surface quality of the parts including surface roughness, surface scratches, corrosion, cracks, spalling, damage and galling defects.
（３）零件的物理力学性能 除硬度、硬化层深度外，对零件制造和修复过程中形成的性能，如应力状态、平衡状况、弹性、刚度、振动等也需根据‘情况适当进行检测。
(3) the physical and mechanical properties of parts except the hardness and depth of hardened layer, formed on the performance of parts manufacturing and repair process, such as stress, balance, flexibility, stiffness, vibration and so on are required according to "appropriate detection.
（４）零件的隐蔽缺陷 包括制造过程中的内部夹渣、气孔、疏松、空洞、焊缝等缺陷，还有使用过程中产生的微观裂纹。

(4) the hidden defects of parts include the defects of internal slag inclusion, porosity, porosity, welding seam and so on, and the micro cracks in the process of use.

（５）零部件的质量和静动平衡 如活塞、连杆组之间的质量差，曲轴、风扇、轴、车轮等高速转动的零部件的静动平衡。
(5) the quality of parts and the static and dynamic balance, such as the quality difference between piston and connecting rod group, the static and dynamic balance of crankshaft, fan, shaft, wheel and other high-speed rotating parts.
（６）零件的材料性质如零件合金成分、渗碳层台碳量、各部分材料的均匀性、中石墨的拆出、橡胶材料的老化变质程度等。
(6) the material properties of parts such as parts of alloy composition, the carburized layer Taiwan carbon, each part of the material uniformity, graphite in demolition of rubber material, the aging degree of metamorphism etc..
（７）零件表层材料与基体的结合强度 如电镀层、喷涂层、堆焊层和基体金属的结合强度，机械固定联结件的联结强度，轴承合金和轴承座的结合强度等。
(7) surface materials and bonding strength such as plating, coating, surfacing layer and base metal bonding strength, mechanical coupling strength fixed connecting piece, bearing alloy and bonding strength of the bearing seat.
（８）组件的配合情况 如组件的同轴度、平行度、啮合情况与配合的严密性等。
(8) the coordination of components, such as the coaxiality, parallelism, engagement and tightness of the components, etc..
（９）铝合金门窗设备零件的磨损程度 正确判断摩擦磨损零件的磨损程度，由磨损极限确定其是否能继续使用。
(9) the wear degree of the parts of the aluminum alloy doors and windows, the wear degree of the friction and wear parts can be correctly judged, and the wear limit can be used to determine whether it can continue to use.
（１０）密封性 如内燃机缸体、缸盖需进行密封试验，检查有无泄漏。
(10) tightness, such as cylinder block and cylinder head, should be sealed to check whether there is leakage or not.