CN103894838B - 一种换热器管板堆焊的加工方法 - Google Patents

一种换热器管板堆焊的加工方法 Download PDF

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Publication number
CN103894838B
CN103894838B CN201410076175.0A CN201410076175A CN103894838B CN 103894838 B CN103894838 B CN 103894838B CN 201410076175 A CN201410076175 A CN 201410076175A CN 103894838 B CN103894838 B CN 103894838B
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welding
built
heat exchanger
tube sheet
processing method
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CN103894838A (zh
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杨宏伟
顾彦
刘涛
梁胜
尤学玲
马利海
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Ningxia Baota Petrochemical Technology Industry Development Co Ltd
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Ningxia Baota Petrochemical Technology Industry Development Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/10—Heat sinks

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Arc Welding In General (AREA)

Abstract

随着复合板换热器的管板堆焊复合层层数的增多，传统以直接堆焊的方式显得费力费时，本发明采用先加工后堆焊的方法进行加工，操作更加方便、效率大幅提高，首先按方法加工处理，对管板密封面外径减小6~10mm，深度为5mm，并倒角45°，隔板槽宽度增加4~6mm，深度为5mm并在两边倒角30~60°，堆焊3~5mm的不锈钢复合层。经过该方法可达到节能降耗、降本增效的目的。

Description

一种换热器管板堆焊的加工方法
技术领域
本发明涉及换热器的生产加工设备，尤其涉及复合板换热器管板需堆焊不锈钢层的一种加工方法。
背景技术
在传统工艺中，管板的加工多采用直接在坯料上堆焊不锈钢复合层的方式，传统方法中管板需要堆焊8~10mm的复合层，这样堆焊加工的工作量比较大，而且所需焊材多成本高。
目前复合板换热器的管板堆焊复合层的越来越多，如果直接在坯料上堆焊加工，无疑导致了生产的复杂性和成本的增加。
发明内容
为解决上述问题，本发明提供一种操作方便、提高效率的管板堆焊加工方法。相比直接堆焊，采用先加工后堆焊的方法既节约了堆焊成本、降低工作量，又达到了节能降耗、降本增效的目的。其具体操作方法如下：
（1）将管板按照图纸要求在订做管板时将管板密封面外径减小6~10mm,深度为5mm，并倒角45°，隔板槽宽度增加4~6mm，深度为5mm并在两边倒角30~60°；
（2）在管板上堆焊3~5mm的不锈钢复合层；
（3）用卷板机进行校平，校平后的平面度必须小于4mm；
（4）进行密封面及内外圆的车削加工、钻孔。
附图说明
附图1为换热器管板堆焊加工计算的示意图。
具体实施方式
以某厂换热器设备HRQ12-082再生塔底重沸器为例：
第一步：以φ1687×50mm密封面外径减小6~10mm，深度为5mm，并倒角45°，隔板槽宽度增加4~6mm，深度为5mm并在两边倒角30~60°进行订货；第二步：在管板密封面上堆焊3mm的不锈钢复合层；第三步：用卷板机进行校平，校平整后进行加工处理；第四步：进行密封面及内外圆的车削加工、钻孔。
以往的加工方法需用焊材约240kg、焊剂约288kg，使用该发明后，需要焊材150kg、焊剂约180kg，车间仅在设备HRQ12-082再生塔底重沸器一台产品上节约焊材90kg、焊剂约108kg；人员用度上传统的加工方法需要2人5天完成，采用这种方法后需2人2.5天完成，加工时间仅为原加工方法的一半；堆焊厚度传统的加工方法为8~10mm，而使用这种堆焊方法后的厚度仅为3mm，工作量比传统的加工方法减少了一半。
因此，该技术创新在换热器的生产进度以及降本增效方面起到了明显的效果。

Claims (2)

1.一种换热器管板堆焊的加工方法，其特征在于该加工方法包括以下步骤：
（1）在订做管板时，管板密封面外径为成品尺寸D减去6~10mm；并倒角45°，隔板槽宽度为成品尺寸加4~6mm，原深度5mm不变；
（2）用带机堆焊机堆焊，保证密封面上有3mm的复合层；
（3）转卷板机进行校平，校平后的平面度必须小于4mm；
（4）进行密封面及内外圆的车削加工，再钻换热管孔。
2.如权利要求1所述的一种换热器管板堆焊的加工方法，其特征在于适合复合板换热器的碳钢管板需要堆焊不锈钢复合层的设备。
CN201410076175.0A 2014-03-04 2014-03-04 一种换热器管板堆焊的加工方法 Expired - Fee Related CN103894838B (zh)

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CN106271156B (zh) * 2016-08-30 2018-08-10 东方电气集团东方锅炉股份有限公司 一种防裂纹的管板堆焊方法
CN109604769B (zh) * 2019-01-07 2021-11-16 武汉船用机械有限责任公司 环形工件的焊接方法
CN111390339B (zh) * 2020-04-04 2021-10-29 天津津滨石化设备有限公司 高纯铁素体不锈钢换热器的焊接工艺

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