CN100485305C - 散热器及制造方法 - Google Patents
散热器及制造方法 Download PDFInfo
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- CN100485305C CN100485305C CNB2006100275052A CN200610027505A CN100485305C CN 100485305 C CN100485305 C CN 100485305C CN B2006100275052 A CNB2006100275052 A CN B2006100275052A CN 200610027505 A CN200610027505 A CN 200610027505A CN 100485305 C CN100485305 C CN 100485305C
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- 238000005476 soldering Methods 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
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- 230000001681 protective Effects 0.000 claims description 9
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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[O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
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Abstract
本发明涉及一种散热器及其制造方法，该散热器由散热片和位于散热片两端的连接头组成，散热片与连接头之间，连接头与连接头之间为经过钎焊，由焊料合金层连接在一起的搭接接头。该种散热器的制造方法包括如下步骤：a.散热片、连接头、连接件搭接部位的加工；b.散热器单片组装；c.散热器组装；d.炉中钎焊；e.钎焊后的散热器进行气密性检测合格后进行后序处理即可。该散热器主要应用于采暖系统。
Description
散热器及制造方法
技术领域
本发明涉及一种散热器及制造方法。
綠絲
随着生活水平的日益提高，人们对居住环境的要求也越来越高。使得对 采暖的散热器的实用性和装饰性的要求不断提高。传统的铸铁散热器由于制 造能耗高，污染环境严重、产品笨重、外观粗糙等越来越不受人们的喜欢。 各种轻型散热器应运而生。其中钢制散热器被中国国家建设部定为各类散热 器中的主流产品。
在传统制造工艺中，各部位之间的焊接均采用焊接技术中的熔化焊技术，
如电阻焊、氩弧焊、激光焊、电弧焊等方法。连接头la与连接头lb之间的 连接方式为对接接头，如附图2所示，散热片与连接头的连接方式相同。以 这种结构和工艺制成的散热器最大的缺陷在于耐蚀性差。这是因为影响材料
腐蚀的几大要素包括：（1)在冲压拉伸过程中产生的内应力；（2)冲压拉伸 产生的材料晶格滑移、歪扭、畸变、细微裂纹缺陷；（3)局部焊接造成的热 影响区的热应力及组织应力；（4)单边焊的焊接区域101容易出现未焊透区 域；（5)焊接操作的一致性差及焊接缺陷等。而这些影响材料产生腐蚀的要 区在传统工艺中均无法得以有效的解决和克服。因此柱式散热器的焊接接缝 处及柱头拉伸拐角处在经过一段时间使用后，在腐蚀介质的作用下极易发生 腐蚀和泄漏现象。为克服这一顽疾， 一些生产厂家在散热器内腔表面上加涂 防腐涂料，但这也不能真正的解决问题。这样防腐蚀问题就成为影响散热器 更成熟地推广应用的重大障碍。
发明内吝
本发明所要解决的技术问题就是如何克服上述现有技术存在的耐蚀性差
的问题。为解决上述问题,本发明所采用的技术方案是提供一种耐腐蚀的散热器和 制造散热器的方法。散热器它包括散热片和位于散热片两端的连接管，位于散 热片与对接管之间的连接处和位于对接管与对接管之间连接处的炉内钎焊组合 接头以及位于组合接头内的焊料合金层。 制造上述散热器的具体方法步骤是-
a. 首先机械加工散热片、对接管和连接件的搭接部位：保证搭接部位的长
度大于2mm，使其在生产中保持一致性；
b. 对散热片单片的组装:根据上述步骤所加工的散热片两端与对接管之间
的搭接结构，在散热片的两端与对接管的搭接部位，或者在散热片的两端、对 接管与连接件之间的搭接部位上预置钎料并进行点焊完成散热片两端与连接管
的单片组装；
C.进行散热器整体的组装：在专用胎具上将上述步骤b已组装好的单片散
热片进行装配，根据上述步骤a对接管之间所加工的连接的结构，在一散热片 两端的对接管与另一散热片两端的对接管之间的搭接部位或者两对接管与连接 件的搭接部位预置钎料并在各接缝处点焊固定，从而完成散热器的整体组装；
d. 进行炉中钎焊：将上述步骤组装好的散热器置入高温钎焊炉内，钎焊炉 内的温度保持在800度到1200度，炉内通有按体积比含90%的保护气体和10
%的还原气体的混合气体，炉内的气体压强为l个大气压；
e. 对经过上述步骤炉中钎焊后的散热器进行气密性检测，经检测合格后完成。
本发明的有益效果是：采用本发明的制作方法制成的散热器，由于散热片 和对接管，对接管与对接管之间的连接是一组新型结构的组合接头，并采用焊 接技术中的非溶化焊技术，是在保护气氛下的连续式的高温钎焊炉内进行炉中 钎焊，在组合接头内的连接部位上形成一层结合牢固的焊料合金层。因而与传 统制造工艺生产的散热器相比，本发明这种搭接形式的组合接头可大大提高焊
接接头的强度及气密性，耐压高，在3MPa压力下不泄漏，而且釆用钎焊工艺使 钎料填充焊缝与基体形成牢固的合金结合可大大提高接头部位的耐腐蚀性能。附图说明
图1-1为一般散热器的外形结构示意图； 图1-2为图1-1的左视图；
图2为传统连接管与对接管之间的对接结构的示意图； 图3为本发明第一实施例中对接管之间的组合接头一种结构的示意图； 图4为本发明第二实施例中对接管之间的组合接头结构的示意图； 图5为本发明第三实施例中对接管之间的组合接头结构的示意图； 图6为本发明第四实施例中对接管之间的组合接头结构的示意图； 图7为本发明散热器制造方法的流程图。
具体实施方式
下面结合附图对本发明作进一步地说明：
图1-1、图1-2为一实施例，是由四组散热器单片组成的散热器的结构示 意图，如为图1-1、图1-2所示，散热器包括：柱式散热片1和位于柱式散热 片两端的对接管2。
图3为本发明第一实施例中的组合接头的是搭接连接结构的连接头，对接 管la的一个端头为变径加工的小端头102，它与另一对接管lb直接插接，插 接部位预置钎料经炉中钎焊形成焊料合金层3。它主要适用于管壁厚度小于2 毫米的对接管。
图4为本发明第二实施例中的组合接头的结构，组合接头内包含一联接件 4。即对接管la和对接管lb通过连接件4搭接在一起，搭接部位预置钎料经炉 中钎焊形成焊料合金层3。它也主要适用于管壁厚度小于2毫米的对接管。
图5为本发明第三实施例中的组合接头的结构，经过机械加工变薄的对接 管la和对接管lb的端部通过连接件4搭接在一起，搭接部位预置钎料经炉中 钎焊形成焊料合金层3。它主要适用于管壁厚度大于2亳米的对接管。
图6为本发明第四实施例中的组合接头的结构，经过机械加工形成配合面 的对接管la和对接管lb直接插接，插接部位预置钎料经炉中钎焊形成焊料合 金层3。它也主要适用于管壁厚度大于2毫米的对接管。
5上述四种搭接方式组合接头均以对接管与对接管之间的连接为例，当然， 也同样适用于散热片与对接管之间的连接。
图7为本发明散热器制造方法的具体流程图，如图7所示，具体的方法步
骤是：
实施例l:为钢柱式散热器：
a. 进行进行机械加工柱式散热片、对接管以及连接件的搭接部位，保证搭
接长度大于2n^使其在生产中保持一致性，在本实施例中，散热片的两端在冲 压及焊接成型后保证散热片两头两侧水口台面的平行度《0. lmm及内孔圆度《 0. 2跳
b. 进行散热器的单片组装：根据上述所采用的柱式散热片与对接管的结合 方式，在柱式散热片与对接管的搭接部位或者柱式散热片、对接管与连接件的 .搭接部位预置纯铜钎料并进行点焊完成散热片的两端与对接管的单片组装；
C.进行散热器整体的组装：在胎具上，将上述已组装好的单片散热片进行
组配，根据单片散热片之间的对接管所采用的组合接头的结构，在搭接部位预
置纯铜钎料并在各接缝处用氩弧焊点焊固定，从而完成散热器的组装；
d. 进行炉中钎焊：将上述组装好的散热器置入连续式钎焊炉内进行高温 焊接，钎焊炉内的温度为1100度到1130度(是构成散热器钢材的熔点温度，因 为只有当达到钢材的熔点时，焊料才能与两侧的钢材形成所述的组合接头中的 焊料合金层）；钎焊炉内的保护气氛中氮气所占的体积比为90%，氢气、 一氧 化碳或二者的混合气体所占的体积比为10%;由于钎焊是在低露点、低含氧量、 高纯度、并包含有还原组氛的保护气氛中进行，钎焊时不用填加钎剂，钎焊的 散热器保持光亮无氧化，并焊缝焊料填充饱满；
e. 钎焊后的散热器进行气密性检测合格后进行后序处理——即喷塑和包装 最后完成。
实施例2:为不锈钢柱式散热器：
本实施例2进行制作散热器的具体步骤与实施例1相同，所不同的是构成
散热器的材料是不锈钢材料，不锈钢材料的熔点是1200flC，比钢材高。所以桥 式连续钎焊炉内的温度为1200QC,炉内的保护气氛中含有作为保护气体的高纯氨分解气（由25%&和75XH2分解而成）的体积比为90%，和含有作为还原气 体的氨气所占的体积比为10%,气氛露点《-60°C。 实施例3:为铜柱式散热器-
本实施例3进行制作散热器的具体步骤与实施例1相同，所不同的是构成散 热器的材料是铜料，铜料的熔点是800°C，比上述的钢材低，所用的焊料为 P-Cii(铜基铅料)，连续式钎焊炉中的温度为800。C (或者850°(:〜950°0;炉内的 保护气氛中高纯度氨分解气（由25%&和75。/qH2分解而成）所占的体积比为 90%，氢气所占的体积比为10%，气氛露点《20'C。
Claims (5)
1. 一种散热器，包括：散热片和位于散热片两端的对接管，其特征在于包括：位于散热片与对接管之间的连接处和位于对接管与对接管之间连接处的炉内钎焊组合接头，位于组合接头内的焊料合金层以及置于组合接头内接口处的连接件。
2. —种如权利要求1所述散热器的制造方法，其特征在于，制造方法的具 体步骤是：a. 首先机械加工散热片、对接管和连接件的搭接部位：保证搭接部位的长 度大于2mm，使其在生产中保持一致性；b. 对散热片单片的组装：根据上述步骤所加工的散热片两端与对接管之间 的搭接结构，在散热片的两端与对接管的搭接部位，或者在散热片的两端、对 接管与连接件之间的搭接部位上预置钎料并进行点焊完成散热片两端与连接管 的单片组装；C.进行散热器整体的组装：在专用胎具上，将上述步骤b已组装好的单片 散热片进行装配，根据上述步骤a对接管之间所加工的连接的结构，在一散热 片两端的对接管与另一散热片两端的对接管之间的搭接部位或者两对接管与连 接件的搭接部位预置钎料并在各接缝处点悍固定，从而完成散热器的整体组装；d. 进行炉中钎焊：将上述步骤组装好的散热器置入高温钎焊炉内，钎焊炉内的温度保持在800度到1200度，炉内通有按体积比含90%的保护气体和10%的还原气体的混合气体，炉内的气体压强为l个大气压；e. 对经过上述步骤炉中钎焊后的散热器进行气密性检测，经检测合格后完成。
3. 如权利要求2所述的散热器制造方法，其特征在于所述步骤b和c中在 各搭接部位预制的钎料是铜基或银基钎料。
4. 如权利要求2所述的散热器制造方法，其特征在于钎焊炉内的保护气体 是氮气，或是氩气，或是氨气。
5. 如权利要求2所述的散热器制造方法，其特征在于钎焊炉内的还原气体 是氢气，或是一氧化碳气，或是氢气和一氧化碳气的混合气体。
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| CN102990216A (zh) * | 2012-08-16 | 2013-03-27 | 宁夏东方钽业股份有限公司 | 一次真空将溅射钽环件凸台焊接在环体上的方法 |
| CN104990446A (zh) * | 2015-06-30 | 2015-10-21 | 安徽博隆节能电器有限公司 | 一种使用可靠的散热片 |
| CN105115027A (zh) * | 2015-09-24 | 2015-12-02 | 吴昌友 | 分节连接式铸铁暖气片及其制造方法 |
| CN105161641A (zh) * | 2015-09-25 | 2015-12-16 | 东莞市胜蓝电子有限公司 | 电池盖体及其加工方法 |
| CN108526636B (zh) * | 2017-03-06 | 2021-06-08 | 新昌县四通机电有限公司 | 减震管及其制造方法 |
| CN108000063A (zh) * | 2017-11-30 | 2018-05-08 | 贵州航天电子科技有限公司 | 一种气密组件前盖焊接方法 |
| CN108188524A (zh) * | 2018-01-16 | 2018-06-22 | 向海星 | 一种钢不锈钢复合板材制板型散热器 |
| CN110043946A (zh) * | 2018-01-16 | 2019-07-23 | 向海星 | 一种钢铜复合板材制柱型散热器 |
| CN113339613A (zh) * | 2021-06-15 | 2021-09-03 | 飞荣达科技(江苏)有限公司 | 一种异形接头及其制造方法 |
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