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Thin brazing sheet fin component for high temperature brazing and method for manufacturing heat exchanger using the same

A technology of heat exchangers and brazing plates, applied in heat exchange equipment, manufacturing tools, welding/welding/cutting items, etc., can solve problems such as changing the direction of brazing configuration, end deformation, abnormal end deformation, etc., to achieve Prevents reduction in product value, prevents deformation from being dumped, and improves production efficiency

Inactive Publication Date: 2010-09-22
FURUKAWA SKY ALUMINUM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, even in conventional brazing heating at a temperature of about 600°C, even a brazing sheet fin member, which should have excellent high-temperature buckling resistance, has abnormal deformation at the end.
[0017] Here, although it is also considered that the above-mentioned abnormal toppling deformation of the fin end 1A is due to the influence of gravity on the end 1A as the free end, the inventors of the present invention have found that even if the various parts of the core body are installed Because gravity does not act on the direction in which the front end side of the fin end 1A falls, the abnormal deformation of the end will also occur, that is, it is not only caused by gravity.
Therefore, it is considered that changing the arrangement direction during brazing only by assembling the core body cannot solve the problem.

Method used

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  • Thin brazing sheet fin component for high temperature brazing and method for manufacturing heat exchanger using the same
  • Thin brazing sheet fin component for high temperature brazing and method for manufacturing heat exchanger using the same
  • Thin brazing sheet fin component for high temperature brazing and method for manufacturing heat exchanger using the same

Examples

Experimental program
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Embodiment 1

[0083] This Example 1 is equivalent to a preliminary research result, and is used to determine the conditions such as the Si content in the solder necessary to prevent the deformation of the fin end and the average coverage rate of the single side of the brazing material.

[0084] In the first embodiment, the core material used Al-1.1mass%Mn-0.35mass%Si-0.4mass%Fe alloy, and the core material is made of solder made of Al-Si-based alloy, 70μm For thick brazing plate fin parts, various changes are made to the Si content and cladding ratio of Al-Si alloys. The content of Fe in the solder is within the range of 0.2 to 0.25 mass%. In addition, in order to suppress the formation of coarse Si particles, Na is added at about 0.003 mass% during casting. Here, the core material and the solder are produced by ordinary DC casting, and in the subsequent steps, the usual methods, namely, clad bonding by hot rolling, cold rolling, and intermediate annealing are also used.

[0085] In order to in...

Embodiment 2

[0090] In this Example 2, more conditions were changed in various ways.

[0091] First, the core material having the composition shown in Table 1 and the solder shown in Table 2 were respectively subjected to DC casting by a conventional method, and homogenized. Here, in the casting of the solder, the refining treatment of Si particles in which Na and Sr are added under predetermined conditions is performed. The hot-rolled solder is made to have a predetermined thickness, is laminated on the surface and the back of the core material ingot that has been cut on the surface, and is further hot-rolled to perform clad bonding. After that, cold rolling, intermediate annealing, and final cold rolling were performed to produce a clad member (brazed plate fin member) with a predetermined thickness. Table 3 shows the material composition of the brazing plate fin member as the clad member.

[0092] The cross section in the thickness direction along the length direction of the fin member was...

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Abstract

The present invention provides a thin brazing sheet fin component for high temperature brazing and a method for manufacturing a heat exchanger using the same. According to the invention, the thin brazing sheet fin component with a thickness less than 85 mu m is used. Even the brazing is performed at a high temperature higher than 610 DEG C, the tilting deformation at the end of the fin is not caused. Al-Mn series alloy which is used as a core material is composed of the following components: 0.7-1.5% of Mn, 0.3-0.8% of Si, 0.05-0.75% of Fe, and the balance of Al substantially. The solder which is used for jointing with two surfaces of the core material is Al-Si series alloy with Si content of 5.5-8.0%. Furthermore the average coating rate of a single surface of the solder is 6.0-9.8%. Furthermore the relationship between the silicon content (Sif) in the solder and the average coating rate (CR) of a single surface of the solder is adjusted so that the following formula is satisfied: Q=Sif(mass%)*CR(%)<=67.

Description

Technical field [0001] The present invention relates to a brazing plate fin component used in an aluminum alloy heat exchanger and a method for manufacturing a heat exchanger using the brazing plate fin component. More specifically, as a corrugated fin component, it relates to a fin component suitable for brazing at a high temperature exceeding 610°C and 622°C or less, and to a heat exchanger using the same. 的制造方法。 Manufacturing method. Background technique [0002] Aluminum alloy heat exchangers, because the raw material aluminum alloy is lighter and has good thermal conductivity, in addition, it is also suitable for joining by furnace brazing using an aluminum brazing sheet pre-coated with solder (ろう材) Because of its mass production, it has been widely used, especially in automobile radiators, air conditioner evaporators, capacitors, etc. [0003] In recent years, heat exchangers for automobiles have been further reduced in weight. For this reason, there is an urgent need to red...

Claims

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Application Information

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IPC IPC(8): F28F3/00F28F21/08C22C21/00B23P15/26
CPCB23K1/0012B23K1/008B23K35/286B23K2101/14B23K2103/10C22C21/00F28F21/084
Inventor 铃木义和鹿野浩大原伸昭
Owner FURUKAWA SKY ALUMINUM CORP
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