......................................................................................................................................................................................................................................................
 

The first procedure in plastic windows & doors fabrication is to prepare profile, which determines the precision and quality of windows & doors. In order to guarantee better performance of windows & doors, the material preparation procedure should by all means be strictly complied with. We also should see to it that all selected profiles are qualified products and the appearance and dimension meets the relevant criteria.

  1. Please prepare the raw materials according to

1, Design drawing
2, Order requirements
3, Hole dimension
II.??? Preparation of profiles for frame and sash
1, Equipment
(1) The equipment to prepare profiles includes dluble-angle slitting saw and any angle saw.
(2) Formulate scientific operation procedure in accordance with the equipment¡¯s User Manual and follow such procedure strictly.

2, Cutting

When cutting, determine the dimension of the base profile and cutting according to rules for profile preparation and process requirements, Please confirm whether the cutting length of the equipment itself includes welding allowance or not. If it does, the welding allowance can be neglected in cutting and the base material can be cut to structural members size directly. If not, the cutting dimension should be that of the original dimension of the structural member plus the welding allowances at two ends (Generally, the welding allowance on each end is 3mm).

For example, if the dimension of fixed windows to fabricate is 1200mmx1500mm. The cutting length of the equipment itself does not include the welding allowance, thus the length of profile prepared for the frame should be:
1200+3x2=1206------------in 2 pieces
1500+3x2=1506------------in 2 pieces
During the cutting, the saw blade and working table should be kept clean and free from an water, grease, dust and other foreign matters so as not to affect subsequent processes. After cutting, the first cutting piece should be examined in three dimensions and random inspection carried out for others. All structural members should observe the following technical requirements.

  1. Length allowance for the structural member: ¡À0.5mm
  2. The end angle allowance of the structural member: ¡À0.5¡ã
  3. The perpendicularity of the structural member¡¯s cutting faces and the profile¡¯s two sides does not affect the welding quality. Clean the welding surface to be free from water, grease, scraps and other foreign matters after welding.
  1. Profile preparation for mullion

1, Equipment selection
The equipment includes double-angle cutting saw, any angle saw and mullion saw.
2, Cutting

Cut in accordance with the dimensions on the design order. The first piece is inspected by three people after cutting, followed by random inspection. The structural members should meet the following technical requirements (except the mullion saw): Please refer to figure 1-1:


 
 
 
>Europe Style
 
 
 
 
>Hollow Glass Shutter
 
 
 
     
     
   
     
     
Back to PVC Windows
 
Copyright @Yatai 2006 All Right Reserved.
TEL:0086-591-87147106 Fax:0086-591-87143620
E-mail:sales@pvcwindows.com.cn, bensonchina@gmail.com
Web:http://www.pvcwindows.com.cn, http://www.chinapvcwindows.cn