机械5

江苏新岛YC550散热器的设计 摘要：冷却系统的作用是保证发动机在最适宜的温度状态下工作。而散热器是冷却系统的重要部件，介绍汽车散热器的结构型式及其对材料的要求。重点分析汽车散热器材料的应用及其制造技术的发展情况，并指出汽车散热器的发展趋势。 以新岛公司现有产品YC550散热器为设计课题，分析现有的散热器的结构形式及其对材料的要求，分析现有的散热器制造技术和材料的选择。参考国内外散热器制造的新技术——铜硬钎焊技术，铜硬钎焊技术通过采用特殊的铜、锡和磷的钎焊合金,将黄铜和紫铜分别制成管和散热带钎焊成一个整体———即散热器和热交换器。铜硬钎焊技术的核心是无焊剂、无铅焊合金以及抗退火材料。介绍了铜硬纤焊散热器的工艺技术原理及主要材料的性能。指出了铜硬纤焊散热器在制带、制管、主片及纤焊炉选型等方面的工艺要点。铜硬纤焊散热器具有成本低、小型化、无污染及材料的回收和再生产利用率高等优点。其工作原理是用奥托昆普公司开发的铜硬焊金属填料OKC600在高温590～610℃时熔化,依靠金属毛细管的作用力,流入焊接间隙,与母体材料(抗退火铜材)发生反应,在交界处形成合金金属连续体,构成高强度的金属一体化结构，可见新型的铜硬钎焊技术有不着不可取代的优点，可减轻整体散热器的质量。同时分析散热器制造的技术要求，改进加工工艺。在降低成本的同时提高产品的寿命，延长使用寿命。 关键词：汽车散热器；冷却系统；材料要求；制造技术；钎焊技术； Desig
n of Jia
ngsu Xi
ndao radiator YC550 Abstract: The cooli
ng system e
nsures that the e
ngi
neworks at appropriate temperature a
nd radiator is the importa
nt part of the cooli
ng system. This paper i
ntroduces the structure type of the automobile radiators a
nd material requireme
nts. Especially it a
nalyzes the applicatio
n of the automobile radiator material a
nd the developme
nt of the ma
nufacturi
ng tech
nology a
nd the developme
nt tre
nd of automobile radiators. It gives a
n overview ofyc550 radiator produced by Xi
ndao Compa
ny. It a
nalyzes the existi
ng radiator's structural style a
nd to the material request, a
nd the existi
ng radiator tech
nique of ma
nufacture a
nd the material choice. Refere
nce to the radiator at home a
nd abroad to create
new tech
nologies- CuproBraze tech
nology, CuproBraze tech
nology through the use of special copper, ti
n a
nd phosphorus brazi
ng alloys, respectively,will be made of brass a
nd copper pipes a
nd heatwith solderwelded i
nto awhole--- that is, the radiator a
nd heat excha
ngers. The key tech
nology of radiator ma
nufacture by CuproBraze is
not
necessary to use flux, kupper solder a
nd a
n
neali
ng resista
nce material. The process a
nd tech
nology pri
nciple a
nd mai
n material performa
nces for CuproBraze radiator are i
ntroduced, the critical tech
nology poi
nts of fi
n a
nd tube ma
nufacture,header a
nd solderi
ng fur
nace selectio
n, etc. are prese
nted. The CuproBraze has its adva
ntages of lower cost,small size,
no co
ntami
natio
n, higher material recovery a
nd reproductio
n usage rate. Itsworki
ng pri
nciple is developed by Outokumpu Copper OKC600 brazi
ng filler metal at a high temperature at 590~ 610℃ melti
ng, metal capillary forces to rely o
n, a
nd flows i
nto theweldi
ng gap,with the pare
nt material(a
nti-a
n
nealed copper) react formed at the ju
nctio
n of the co
nti
nuum of metal alloys, high stre
ngth metal i
ntegrated structure,we ca
n see
new CuproBraze tech
nology could
not irreplaceable adva
ntages, reduce the overall quality of the radiator. Radiator at the same time a
nalyzi
ng the tech
nical requireme
nts for ma
nufacturi
ng, processi
ng tech
nology to improve. At the same time reduci
ng costs to improve product life a
nd prolo
ng life. Keyword: automobile radiator; cooli
ng system; material requireme
nt; ma
nufacturi
ng tech
nology brazi
ng tech
nology. 目录 1绪论1 1.1课题来源2 1.2国内外现状3 1.3本课题拟订的解决问题3 1.4解决方案和预期效果3 1.4.1解决方案3 2散热器总体设计4 2.1散热器简介4 2.2散热器的结构4 2.3散热器的芯子结构形式5 2.4散热器对材料的要求7 2.5散热器的设计7 2.5.1散热器的作用7 2.5.2散热器的构造8 2.5.3散热器散热效果的调节9 2.5.4散热器散热面积的计算9 2.4散热器的材料和成型技术11 2.4.1散热器材料选择论述11 2.4.2常用散热材料12 2.4.3散热器制造新技术——铜硬钎焊新技术13 2.5铜硬钎焊技术13 2.5.1铜硬钎焊散热器的工艺原理13 2.6技术要求15 3结论16 文献资料17 致谢18