Temperature control method for heating soldering area of intermittent type gas protecting soldering furnace

Abstract

The invention discloses a temperature controlling method in a heating and braze welding area of an intermittent gas protecting braze welding furnace, which adopts multipoint measuring and multipoint adjusting methods to control the temperatures in the whole heating and braze welding area so as to make the temperatures even in every point of the whole heating and braze welding area. Firstly, the whole heating and braze welding area, from the feeding mouth to the discharging mouth, is divided into different temperature controlling areas; an internal heat recycling wind machine, a temperature sensor, an electric heater and a temperature controlling instrument are arranged inside every temperature controlling area, all of which form a chain controlling circuit; the temperature in every temperature controlling area is measured by the temperature sensor, and the data will be delivered to the temperature controlling instrument, which will compare the received data with the set parameter, and control the electric heater inside every temperature controlling area; finally, the temperatures in the whole heating and braze welding area will be made even. The invention can precisely control the temperatures in the heating and braze welding area.

Description

1. Technical field [0001] The invention relates to a brazing furnace for effectively connecting various components such as an aluminum heat exchanger, in particular to a temperature control method for heating a brazing zone in an intermittent gas shielded brazing furnace. 2. Background technology [0002] The aluminum brazing furnace is a kind of equipment for effectively connecting the various parts of the aluminum heat exchanger. It is welded by utilizing the characteristic that the melting point of the aluminum solder Al-Si alloy is lower than the melting point of the Al metal material of the component. Most of the existing brazing furnaces are of continuous type. The brazing furnace with this structure has a large installed capacity and is suitable for processing large batches of workpieces. The flexibility is poor, and it is difficult to meet the requirements for workpieces of different specifications and varieties. However, when changing the specifications and varieti...

AI Technical Summary

Problems solved by technology

The brazing treatment of the workpiece needs to be completed in an atmosphere with uniform temperature, which requires precise control of the temperature in the heating brazing zone. The traditional single-point temperature control method can no longer meet the requirements.

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