Metal frame profile welding process

A metal frame and welding process technology, applied in the mechanical field, can solve the problems of cracks in the corners of the glass, insufficient cleaning force, and insufficient cleaning force at the welding place.

CN104959780AInactive Publication Date: 2015-10-07WUXI YANGGONG MACHINERY MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-10-07
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention provides a metal frame profile welding process. A metal plate is molded through cold pressing in a metal frame cold pressing machine; a roller mold with a thickness smaller than 2 mm is arranged at the tail end of the metal frame cold pressing machine; two edges of a door / window profile are aligned along the end part, and a joint is finely adjusted; a part to be welded is cleaned by acid washing passivation liquid, and the surface of the metal frame is cleaned by acid liquid to remove surface oxides. The used acid washing passivation liquid comprises the following components in percentage by weight: 15% of nitric acid, 8% of hydrofluoric acid and 73% of water, or 10% of nitric acid, 5% of potassium dichromate and 85% of water, or 15% of hydrochloric acid, 20% of nitric acid and 65% of water. The metal frame profile welding process adopts a welding angle assembly mode, and performs the sanding mold repair treatment for weld lines, so that the profile cavity fit gap problem and the angle assembly butting part strength problem are solved.
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Description

technical field

[0001] The invention relates to a metal frame profile welding process, belonging to the technical field of machinery. Background technique

[0002] The technical method of door frame profile welding is touch welding technology. Its operating principle is to first overlap the two sides of the seam in the door frame groove, use a butt welding machine, and then weld the seam at a certain interval along the gap. During the welding of the groove joints, there will be many protruding and uneven solder joints. These raised solder joints will continuously rub and collide with the glass installed in the groove when the glass door is opened and closed, which is easy to make the glass Cracks on the corners. In addition, the door frame profile welded by this technology is not strong enough, easy to crack, and has a short service life. There are several reasons for this. Among them, when cleaning the surface of the metal frame, the cleaning force is not enough; the clea...

Examples

Embodiment 1

[0014] The welding process of metal frame profiles includes the following steps:

[0015] (1) The metal plate is cold-pressed in the metal frame cold-pressing machine; the tail end of the metal frame cold-pressing machine is provided with a roller die with a thickness of less than 2mm; the two edges of a door and window profile are aligned, and Fine-tune the seams;

[0016] (2) Clean the parts to be welded with pickling passivation solution, and the acid solution cleans the surface of the metal frame to remove surface oxides; the pickling passivation solution used is 15% nitric acid, 8% hydrofluoric acid + 73% water by weight. Composed of either 10% nitric acid + 5% potassium dichromate + 85% water or 15% hydrochloric acid + 20% nitric acid + 65% water;

[0017] (3) Install the corner block in the door and window profile cavity and place the door and window profile on a special clamping table, butt the corners, and use a fixture to position and press;

[0018] (4) Argon arc ...