Development of operation process of cold extrusion pipe on steam air heater

Abstract

The invention relates to a technology for manufacturing an aluminum soldering radiator and a steam air heater. It is well known that the aluminum soldering technology is introduced from abroad for about 10 years and is a novel non-main technology for China. At present, all manufacturing enterprises at home of the soldering radiator and the steam air heater are operated according to an abroad conventional process of combining a radiator pipe and a radiator belt, and because the radiator belt and the radiator pipe are combined and soldered, the radiator belt and the radiator pipe need to be attached with a soldering coating namely a material of 4343. In a conventional process, the radiator pipe is coated with the coating made of materials of 4343 / 3003 / 7072, and the radiator belt is made of the material of 3003 without the coating; manufacturers of the manufacturing equipment and pipe moulds of the radiator pipe are all abroad companies such as Shola of Germany, Michael of American, TAT of Italy, and the like, no manufacturers of the equipment and the moulds of high-frequency soldering pipes exist in China, and the high cost and the manufacturing period of the equipment and the moulds greatly restrict the development of the aluminum soldering industry in China. The material of the radiator pipe of the steam air heater is changed and replaced by the material of 3003, thus the problems of few specifications, large equipment input, long period of new products, inability of meeting the specific requirement on the products of customers, high product price, and the like are solved so as to ensure that the development flexibility and the speed of the products are greatly increased, and meanwhile, the requirements on product properties of different customer requirements can be met so as to generate more direct economic values.

Description

【Technical field】 [0001] The invention relates to the process development and application of a refrigerant pressure pipe in a core body of a heater. 【Background technique】 [0002] As we all know, the manufacturing technology of aluminum brazing radiators and air heaters has only been introduced from abroad for about 10 years. For our country, it is a new and partial technology. At present, all domestic manufacturers of aluminum brazed radiators and air heaters operate according to the traditional combination of heat pipes and heat strips abroad. Due to the combined brazing of the heat dissipation strip and the heat dissipation pipe, one of the two must have a brazing coating, that is, 4343. The traditional process is that the heat pipe is coated with 4343 / 3003 / 7072, while the heat dissipation belt is 3003 (no coating), and the manufacturing equipment and pipe mold manufacturers of the heat pipe are all foreign countries such as Schola in Germany and Mike in the United Sta...

AI Technical Summary

Problems solved by technology

[0010] (2) The process still needs to be improved

[0011] The products of all-aluminum air heaters must be brazed twice, which will affect the appearance of the products

Images