The invention discloses a closed type cavity welded joint structure, including a cavity and a cover plate. A support step is provided on the cavity, and a step wall is provided on the outside of the support step. The thickness of the cover plate is D, the width of the supporting step is W, the thickness of the step wall is A, and when D is less than 8mm, the thickness of the step wall is A more than D+1, and the thickness of the step wall is equal to D+1, and the thickness of the step wall is equal to D+1, and the thickness of the step wall is equal to D+1, and the thickness of the step wall is equal to D+1, and is A more than D+1, and the thickness of the step wall is equal to D+1, and so A. The width of the supporting step is W more than 0.5 * D. The welding fixture of the invention includes a fixing device, a clamping device on both sides of the workpiece with the fixed device, and a supporting positioning device for supporting the workpiece and locating the workpiece. The supporting positioning device is arranged between the fixed device and the clamping device. The welding method of the invention includes fixing, clamping, welding and other steps. The welding joint structure, welding jig and welding method of the invention have the advantages of good welding quality, suitable for batch welding of different kinds of materials and effectively preventing welding defects.
【技术实现步骤摘要】
一种密闭型腔体焊接接头结构及其焊接夹具和焊接方法
本专利技术属于搅拌摩擦焊接
,尤其涉及一种密闭型腔体焊接接头结构及其焊接夹具和焊接方法。
技术介绍
密闭型腔体结构的零件广泛应用于散热器、换热器等设备,如腔体式水冷板广泛应用于大电流、大功率配电柜的散热器。腔体和盖板往往采用不同的材料,若使用传统的熔化焊对其进行焊接,易产生气孔,变形较大等缺陷,产品合格率低,同时熔化焊对焊接环境温度湿度及焊接人员技能的要求较高,加工成本高。搅拌摩擦焊焊接可以进行异种材料焊接,焊缝质量好,变形少、无污染、对环境温度湿度不敏感,但使用搅拌摩擦焊对密闭型腔体结构进行焊接也存在一些问题和难点。密闭型腔体的零件结构复杂,常采用铸造方式加工生产,盖板采用板材,因而腔体式水冷板常见的铸铝与铝板的焊接,在搅拌摩擦焊的过程中也容易出现沟槽缺陷、焊缝塌陷、边缘塌边等缺陷。
技术实现思路
本专利技术要解决的技术问题是克服现有技术存在的不足,提供一种焊接质量好、适用于异种材料的批量焊接、且能有效防止焊接缺陷的密闭型腔体焊接接头结构及其焊接夹具和焊接方法。为解决上述技术问题,本专利技术提出的技术方案为:一种密闭型腔体焊接接头结构,包括腔体和盖板,所述腔体上设有供所述盖板盖合于腔体上的支撑台阶,所述支撑台阶的外侧设有防止所述盖板水平移动的台阶壁,所述盖板的厚度为D,所述支撑台阶的宽度为W,所述台阶壁的厚度为A,当D≤8mm时,所述台阶壁的厚度A≥D+1,所述支撑台阶的宽度W≥0.5×D。上述的密闭型腔体焊接接头结构,优选的,所述支撑台阶的宽度W不小于1mm。上述的密闭型腔体焊接接头结构,优选的,所述 ...
【技术保护点】
一种密闭型腔体焊接接头结构,包括盖板(1)和腔体(2),所述腔体(2)上设有供所述盖板(1)盖合于腔体(2)上的支撑台阶(21),所述支撑台阶(21)的外侧设有防止所述盖板(1)水平移动的台阶壁(22),其特征在于:所述盖板(1)的厚度为D,所述支撑台阶(21)的宽度为W,所述台阶壁(22)的厚度为A,当D≤8mm时,所述台阶壁(22)的厚度A≥D+1,所述支撑台阶(21)的宽度W≥0.5×D。
【技术特征摘要】
1.一种密闭型腔体焊接接头结构,包括盖板(1)和腔体(2),所述腔体(2)上设有供所述盖板(1)盖合于腔体(2)上的支撑台阶(21),所述支撑台阶(21)的外侧设有防止所述盖板(1)水平移动的台阶壁(22),其特征在于:所述盖板(1)的厚度为D,所述支撑台阶(21)的宽度为W,所述台阶壁(22)的厚度为A,当D≤8mm时,所述台阶壁(22)的厚度A≥D+1,所述支撑台阶(21)的宽度W≥0.5×D。2.根据权利要求1所述的密闭型腔体焊接接头结构,其特征在于:所述支撑台阶(21)的宽度W不小于1mm。3.根据权利要求1所述的密闭型腔体焊接接头结构,其特征在于:所述台阶壁(22)的厚度A不小于6mm。4.根据权利要求1所述的密闭型腔体焊接接头结构,其特征在于:当D>8mm时,所述台阶壁(22)的厚度A≥D,所述支撑台阶(21)的宽度W≥4mm。5.根据权利要求1或4所述的密闭型腔体焊接接头结构,其特征在于:所述盖板(1)的形状为圆形、椭圆形、腰形、重叠圆形、哑铃形、正方形、长方形、缺口长方形或多边形。6.一...
【专利技术属性】
技术研发人员:李志明,钟南,周长兴,蒋习均,
申请(专利权)人:湖南九方焊接技术有限公司,
类型:发明
国别省市:湖南,43
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