(1)铝合金门窗加工前，;应对所用材料和附件进行检验，其材质应符合现行国家标准或行业标准，所选用的型材形状、尺寸及壁厚应符合设计和使用要求。选用的附件，除不锈钢外，应做防腐处理，以防止与铝合金型材发生接触腐蚀。

(2)应认真检查门窗洞口的实际尺寸，并根据土建施工图核实洞口的实际尺寸与设计要求是否相符，若有出入，应会同土建部门共同处理。

(3)检查施工工具、机具。

(二)铝合金门窗的制作方法

(1)断料。断料，又称“下料”，是铝合金门窗制作的靠前道工序，也是关键的工序。断料主要使用切割设备，材料长度应根据设计要求并参考门窗施工大样图来确定，要求切割准确;否则，门窗的方正难以保证，断料尺寸误差值应控制在2mm范围内。一般来说，推拉门窗断料宜采用直角切割;平开门窗断料宜采用45°角切割;其它类型应根据拼装方式来选用切割方式。

(2)钻孔。铝合金门窗的框扇组装一般采用螺丝连接，因此不论是横竖杆件的组装，还是配件的固定，均需要在相应的位置钻孔。型材钻孔，可以用小型台钻，前者由于有工作台，所以能有效保证钻孔位置的准确度;而后者是因为操作方便。

钻孔前应根据组装要求在型材上弹线定位，要求钻孔位置准确，孔径合适，不可在型材表面反复更改钻孔，因为孔一旦形成，则难以修复。

(3)组装。将型材根据施工大样图要求通过连接件用螺丝连接组装。铝合金门窗的组装方式有45°角对接、直角对接和垂直对接三种。横竖杆的连接，一般采用专项使用的连接件或铝角，再用螺钉、螺栓或铝拉钉固定。铝合金门窗的组装质量，应符合下列规定：①门窗装饰表面不应有明显的损伤。每樘门窗局部擦伤、划伤，不应超过表1的规定。②门窗上相邻构件着色表面不应有明显的色差。③门窗表面应无铝屑、毛刺、油斑或其它污迹存在。装配连接处不应有外溢的胶粘剂。④门窗框尺寸偏差，应符合表2的规定。⑤门窗框、扇相邻构件装配间隙及同一平面高低差，应符合表3的规定。

( 1 ) aluminum windows and doors processing ; respond materials and accessories used to test , the material should be consistent with existing national standards or industry standards , the choice of profile shape, size and wall thickness shall meet the design and use requirements . Optional accessories, other than stainless steel , should be treated with preservatives to prevent contact corrosion with aluminum profiles .

( 2 ) should carefully check the actual size of window and door openings , and to verify the actual size and design are consistent with the requirements of the hole , if access should be handled in conjunction with the civil authorities in accordance with the common civil construction plans .

( 3 ) Check the construction tools , machines and tools .

( B) The method of making aluminum windows and doors

( 1 ) broken material . Broken material , also known as " cutting ", is the first step of the production of aluminum windows and doors , as well as key processes. Feed off the main use cutting equipment , materials and design requirements should be based on the length of the reference windows large drawing to determine the construction , requiring cutting accurate ; otherwise difficult to ensure Founder doors , broken feed size error value should be controlled within the range of 2mm . Generally, sliding doors and windows should be used at right angles to cut off the material ; door windows broken material should adopt a 45 ° angle cutting ; other types of selection should be based approach to assembling cutting mode .

( 2 ) drilling. Aluminum doors and windows box fan assembly generally use screw connection, so both horizontal and vertical rod assembly , or parts of the fixed , need to drill holes in the corresponding position . Profiles drilling, you can use a small bench or pistol drills, the former due to the table , they are able to effectively guarantee the accuracy of the drilling location ; while the latter is due to ease of operation .

Elastic line before drilling should be positioned in accordance with the requirements in sections assembled , requiring accurate drilling position , aperture appropriate changes can not be repeated in the profile surface drilling holes because once formed, it is difficult to repair.

( 3 ) assembly . The large drawing shapes according to the construction requirements connected with screws through the connector assembly . Aluminum windows and doors have a 45 ° angle assembly methods butt , butt right angle and vertical docking three. Connecting rod anyway , generally use a dedicated connection or aluminum angle , and then screws, bolts or aluminum pull nails . Assembly of quality aluminum windows and doors , shall comply with the following requirements : ① doors decorated surface should not have obvious damage. Doors and door frames every local scrapes , scratches, should not exceed specified in Table 1 . Members colored surface adjacent ② doors should not have obvious color difference . ③ aluminum doors and windows should be no surface debris , burrs , oil spots or other stains exist. There should be no spillover junction assembly adhesives . ④ door frame size deviation , shall meet the requirements of Table 2. ⑤ door frames , fan assembly space adjacent components and the same plane as the height difference , should meet the requirements of Table 3 .