Brazing system carrying out heating/cooling by using gas as medium

Abstract

A brazing system carrying out heating/cooling by using gas as a medium comprises a furnace body, a vacuum pumping system and a gas supply system, wherein a workpiece is arranged in a furnace chamber of the furnace body, a gas inlet and a gas outlet are arranged on the furnace body, and the outer part of the furnace body is provided with a circulating pipeline which is connected between the gas inlet and the gas outlet of the furnace body; a heating part and/or a cooling part are/is arranged on the circulating pipeline, and the heating part and/or the cooling part guides hot gas or cold gas into an inner cavity of the workpiece via the circulating pipeline through a power device so as to carry out circulating heating or cooling on the workpiece; a vacuum opening and a protective gas input opening are further arranged on the furnace body; the vacuum pumping system is connected with the vacuum opening and used for enabling the workpiece to be in an oxygen-free environment; and the gas supply system comprises a protective gas storage tank, and is connected with the protective gas input opening and used for conveying protective gas for the furnace body. The brazing system has the advantages of high efficiency, light weight, high safety, uniform workpiece heating or cooling, wide application range and the like.

Description

technical field [0001] The invention relates to the technical field of brazing, in particular to a brazing system using gas as a medium for heating / cooling. Background technique [0002] When the existing brazing furnace heats or cools the hollow workpiece, there are mainly the following disadvantages: 1) Different equipment or devices are used to heat and cool the surface of the workpiece, and usually a plurality of chambers are arranged in the furnace body, For example, the heating chamber and cooling chamber make the structure of the furnace complex, large in size, heavy in weight, and high in cost; 2) The surface of the workpiece is usually heated by radiant heating elements, which is slow to heat and unevenly heated on the surface of the workpiece. The workpiece is transported to the cooling chamber for cooling, and the heating and cooling cannot be completed at one time, which greatly increases the working time and reduces the efficiency; 3) For workpieces with heterog...

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Problems solved by technology

[0002] When the existing brazing furnace heats or cools the hollow workpiece, there are mainly the following disadvantages: 1) Different equipment or devices are used to heat and cool the surface of the workpiece, and usually a plurality of chambers are arranged in the furnace body, For example, the heating chamber and cooling chamber make the structure of the furnace complex, large in size, heavy in weight, and high in cost; 2) The surface of the workpiece is usually heated by radiant heating elements, which is slow to heat and unevenly heated on the surface of the workpiece. The workpiece is transported to the cooling chamber for cooling, and the heating and cooling cannot be completed at one time, which greatly increases the working time and reduces the efficiency; 3) For workpieces with heterogeneous structures, it is not easy to clamp, resulting in poor brazing quality; 4) It is easy to Air leakage occurs; 5) The arrangement of each detection sensor is unreasonable, resulting in inaccurate data measurement and poor temperature uniformity

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