Stainless steel doors and windows come in two types: welded and mortise-and-tenon. Welding is a key process in the manufacturing of stainless steel doors and windows, requiring a DC positive polarity power supply with vertical external characteristics (welding wire connected to the negative terminal), typically suitable for welding plates thinner than 6mm. The shielding gas is 99.99% pure argon, with the flow rate adjusted between 8 and 15 L/min according to the welding current (50~250A). Parameters such as the tungsten electrode extension length, arc length (preferably 1~3mm), and welding torch angle (tungsten electrode to workpiece 80~85°) need precise control, and the workpiece must be cleaned before welding to prevent porosity.
On-site installation of stainless steel doors and windows mainly includes door frame installation, glass partition wall and door frame installation, and glass installation and fixing. The door frame is made using square tubing, positioned according to the opening dimensions, initially fixed with wooden wedges, and finally secured with expansion bolts. The top limiting groove of the door should be installed, with a width 2-4mm greater than the glass thickness and a depth of 20-30mm. To install thick glass, insert the upper part of the glass into the limiting groove, place the lower part in the center of the base, clamp it on both sides with the square tube of the door frame, leaving a gap of about 4mm, and finally seal and fix it with rubber strips and glass glue.