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Aluminum Brazing Materials


. Especially with the thin brazing sheet for heat sink material, in the brazing process of longitudinal bending, deformation large. Molten solder is caused to spread over the core material one of the major phenomena. Easy to produce for soldering and the core material recrystallized coarse crystal grains of aluminum automotive heat exchanger materials in Table 6 parts brazed heat exchanger construction methods tube or pipe extrusion pipe extrusion heat sink screw to open brazing sheet of pure vacuum { Al lines (1050, etc.) solder AI ・ Si-Mg system core material AtMn-SnAI-Cu. Mn Department of solder Al ・ Si-Mg core material is not Al-Mn-In the brazing filler metal plate evaporator Al-Si-Mg core material of vacuum bare wood stamping Al-Mn ・ CuAI. MnSn Series Filler Al ・ Si ・ MgA BU core material pro-Mn-In handsome MCu-Ti Al system extruded tube sheet welding hard stick in spiral NOCOL () K of pure Al lines (1050, etc.) (Zn dissolved shot) solder AI ・ si, Department of At-Cu ・ Mn II Zn dissolved radio] core material A BU M 【Bu 【: u-Zn series capacitors extrusion business of pure Al-7, n dissolved radio] Sou brazing sheet Al ・ Cu-Mn (Zn dissolved radio] in parallel NOCOLoK Department of welded pipe solder Alsi core material Al / V [nCu.zn Series Filler Al_si Department of core material AlMn.Cu (3003, etc.) welded pipe solder Al-s core material AI-Mn-cu (3003, etc.) Bare wood Type N0COLOK radiator brazing material A Bu Zn protection system AI-Mn ・ Cu-Zn solder A1.Si most AI.FeSiZn pro-King, Department of Protection of wood core material AlMSi Alzn ・ / rig system welded pipe solder, Department of core Al-si u Department of Materials AlMn seven (30 ~ 3, etc.) Bare wood heating din brazing type () coI, () K protected material Al ・ Zn core material At-Mn-cu-Zn system solder Al-si,[link widoczny dla zalogowanych], Department of core material A1. Mn ・ Si system protection material AlZn-Mg system the 'state title, as improved methods that add elements to the selected adjustment is making the best conditions (in particular the final reduction rate) is very important. For example, the 3003 core material sag in the final pressure was 20 to 30 is best. 2.2 automotive air conditioner evaporator core sheet material requires evaporation Used to F characteristics: ① good corrosion resistance. ② Solder sim performance. ④ j have 'given strength. ④ into Tong performance by the banana hair towel with air and automobile exhaust condensate corrosion of components ling the effects of water are often concentrated in the wet state, the storm this, select the materials to take full account of the evaporator corrosion resistance. * as for Core refrigerant pipes are used for a Mn A1 Department of Taijin, heat sink materials using the natural electrode potential than the lower core plate alloy, corrosion protection method of using heat sink. In recent years, with the development trend of thin-walled in order to improve own core material corrosion resistance, in A1 to add a gold Mn Cu, Ti beyond the JIS Taijin lE being developed. and, f practical beginning is the role of Ti corrosion morphology of the layered In addition, proposed Other solder and core material embedded in the middle layer between the four-story structure as a protective layer of the brazing sheet. 2,[link widoczny dla zalogowanych],3 pipe radiator radiator pipe requirements with the following characteristics: ① good corrosion resistance. ② forming excellent performance. ⑨ high strength. radiator pipes are in the internal and external corrosive environment, the internal engine cooling water in the pipe loop, so the corrosion resistance of more than external Orioles to. radiator pipe generally use 3-layer structure of the brazing Thin welded pipe, the core material for the A1 a Mn-Cu alloy, while the use of contact cooling water side of the A1 series Taijin a Zn prevent Ling is the corrosion of water on the core material. AI-use heat sink material Mn-Zn system. In recent years, the development of enhanced Mg diffusion-type pipe,[link widoczny dla zalogowanych], the pipe material added endothelial magnesium, silicon core material added, using brazing and heating. MgSi fine precipitates by high strength, high resistance to corrosion,[link widoczny dla zalogowanych], so pipe of further thin. 3 Conclusion The theme of the article alloy brazing material, and this is the automotive heat exchangers for the object described. With the automotive heat exchanger of the accelerated development of aluminum is expected to further - step requires heat exchanger lightweight, performance-based and low cost of business. Thus, in materials, high-strength thin-walled materials,[link widoczny dla zalogowanych], the development of materials with high resistance to corrosion will progress. In addition, not only based on existing drill apparatus welding method based materials development, new brazing method development are necessary. little Yu-Kui Zhang translated from the Japanese reference
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