WO2018094987A1 - 焊接基体 - Google Patents

焊接基体 Download PDF

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Publication number
WO2018094987A1
WO2018094987A1 PCT/CN2017/085505 CN2017085505W WO2018094987A1 WO 2018094987 A1 WO2018094987 A1 WO 2018094987A1 CN 2017085505 W CN2017085505 W CN 2017085505W WO 2018094987 A1 WO2018094987 A1 WO 2018094987A1
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WO
WIPO (PCT)
Prior art keywords
welding
groove
soldering
solder
limiting member
Prior art date
Application number
PCT/CN2017/085505
Other languages
English (en)
French (fr)
Inventor
卜斌龙
刘培涛
游建军
段红彬
彭李静
Original Assignee
京信通信技术(广州)有限公司
京信通信系统（中国）有限公司
天津京信通信系统有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 京信通信技术(广州)有限公司, 京信通信系统（中国）有限公司, 天津京信通信系统有限公司 filed Critical 京信通信技术(广州)有限公司
Priority to EP17874932.1A priority Critical patent/EP3546112A4/en
Priority to US16/463,466 priority patent/US11154954B2/en
Priority to BR112019010593-0A priority patent/BR112019010593B1/pt
Publication of WO2018094987A1 publication Critical patent/WO2018094987A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0016—Brazing of electronic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0461—Welding tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/06—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for positioning the molten material, e.g. confining it to a desired area
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/027—Soldered or welded connections comprising means for positioning or holding the parts to be soldered or welded
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/028—Soldered or welded connections comprising means for preventing flowing or wicking of solder or flux in parts not desired
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B23K2101/38—Conductors

Definitions

  • the present invention relates to the field of welding technology, and more particularly to a welding substrate that prevents solder from falling off.
  • the phenomenon that the solder is detached from the welded substrate is common, especially the surface soldering or the solder joint welding with the soldering groove, and the soldered body easily carries the solder off the soldering substrate.
  • aluminum welding base and coaxial cable that is, the welded body
  • it is generally coated, usually a layer of copper is sprayed in the aluminum welding base welding groove, that is, copper coating.
  • the copper substrate is relatively strong after soldering between the aluminum substrate and the coaxial cable, its vibration resistance and tensile strength are still weak, and the solder joint is subjected to large vibration or the coaxial cable is pulled by force.
  • the coaxial cable is easy to carry solder (ie, solder) from the soldering groove of the soldering substrate.
  • FIG. 2 is a cross-sectional view of the solder joint of the solder substrate shown in FIG. 1.
  • FIG. 1 shows the case where the coaxial cable 1 is soldered to the aluminum soldering base solder joint 2.
  • the outer conductor 3 of the coaxial cable 1 and the aluminum soldering groove 5 are soldered and fixed by solder 4, due to device vibration or Pulling the cable hard will cause the solder joint 4 to fall off the soldering groove 5. It can be seen that the traditional welding is not strong, the reliability is poor, and there are potential safety hazards.
  • the object of the present invention is to solve the technical problem that the soldering point of the soldering method is not strong and the solder is easy to fall off in the prior art, and a soldering base body in which the solder joint solder cannot be detached from the soldering groove is provided, so that the soldering structure is firm and reliable.
  • a welding base body wherein the welding base body is provided with a welding groove, and the inner side of the welding groove is provided with a limiting piece for preventing the solder and the welded part from loosening from the welding groove after the welded part is welded to the welding base body .
  • the limiting member is laterally disposed at a top end of the soldering groove and extends inward or on a sidewall of the inner side of the soldering groove.
  • the limiting member is provided with at least one pair, and each pair of the limiting members is oppositely disposed at the same height on the welding groove.
  • the limiting member is provided with a plurality of the limiting members disposed on the inner side of the welding groove at equal or unequal height distances.
  • the limiting member is integrally formed with the welding groove, or the limiting member is a separate component that is clamped on the top end of the soldering groove and extends inward or on a sidewall of the inner side of the soldering groove.
  • a T-shaped slit is formed on the inner side of the soldering groove, and the limiting member is T-shaped and is disposed in the T-shaped slit and has one end thereof laterally exiting from the T-shaped slit.
  • the soldering groove has a circular arc shape or a rectangular shape.
  • the welded substrate is made of a metal material or a metal alloy material.
  • the present invention has the following advantages:
  • the welding base of the present invention is provided with a limiting member on the inner side of the welding groove on the basis of the existing welding base solution, wherein the limiting member can prevent the solder from falling off the welding groove.
  • the solder melts and flows into the soldering groove, and the solder cools to form a solid, so that the soldering groove is fixed integrally with the object to be soldered, and the cooled solid solder is caught by the limiting member and is not easily peeled off, thereby solving the problem.
  • FIG. 1 is a perspective view showing welding of a welding base with a welding groove and a coaxial cable in the prior art
  • Figure 2 is a cross-sectional view of the welded joint of the welded base shown in Figure 1;
  • Figure 3 is a cross-sectional view showing a welded joint of a welded base in one embodiment of the present invention
  • Figure 4 is a cross-sectional view showing a welded joint of a welded base in another embodiment of the present invention.
  • soldering substrate of the present invention is improved at the solder joint for the problem that the solder existing in the existing soldering substrate is easily detached from the solder joint, that is, the soldering substrate of the present invention has the same general structure as the existing soldering substrate. The difference is in the solder joint.
  • Figures 3 and 4 only show the structure of the welded substrate of the present invention at the solder joint.
  • the present invention provides a soldering substrate 100 for preventing solder 4 from falling off the solder joints, thereby ensuring the reliability of the soldered metal 3 to the solder substrate 100.
  • the soldering base 100 is provided with a soldering groove 5 at the solder joint for accommodating the soldered part 3 and the solder 4, that is, the soldered part 3 is soldered in the soldering groove 5.
  • the limiting groove 6 is disposed on the soldering groove 5 for preventing the solder 4 and the soldered member 3 from loosening from the soldering groove 5 .
  • the limiting member 6 is disposed inside the soldering groove 5 .
  • the limiting member 6 has a strip shape extending in the longitudinal direction of the soldering groove 5 and laterally disposed at the top end of the soldering groove 5 and extending inwardly, thereby blocking the soldered solder 4 on the inner side thereof, even if The solder 4 is loosened and cannot be detached from the soldering groove 5 in the longitudinal direction of the soldering groove 5, so that the connection between the soldered member 3 and the soldering substrate 100 is safe and reliable.
  • the strip-shaped limiting member 6 is laterally disposed on the side wall of the inner side of the soldering groove 5, preferably at a central portion of the inner side of the soldering groove 5 in the longitudinal direction, so that the limiting member 6 is completed after the welding is completed. It is wrapped by the solder 4 to catch the solder 4, and even if the solder 4 is loosened, it cannot move longitudinally along the soldering groove 5, thereby preventing the solder 4 from falling out of the soldering groove 5.
  • strip-shaped limiting member 6 can also be disposed inside the welding groove 5 at other angles of the plane and the horizontal plane.
  • the stopper 6 has a block shape and a dot shape, and can also realize a function of restricting loosening and falling of the solder 4 . Further, the stopper 6 has a ring shape, and the molten solder 4 flows into the inner space of the ring to solidify, which is more effective in limiting the longitudinal movement of the solder 4.
  • the limiting member 6 is provided in plurality, and the plurality of limiting members 6 are configured such that a plurality of pairs are oppositely disposed inside the welding groove 5. Specifically, each pair of limiting members 6 are disposed at the same or substantially the same height inside the soldering groove 5, so that the solder 4 is fixed from both sides of the soldering groove 5 to ensure the connection of the soldered member 3 to the soldering substrate 100.
  • the plurality of limiting members 6 are disposed inside the soldering groove 5 at equal or unequal heights.
  • the plurality of limiting members 6 are spirally disposed inside the soldering groove 5.
  • the plurality of limiting members 6 are discretely distributed inside the soldering groove 5 .
  • the limiting member 6 is integrally formed with the welding groove 5, so that the connection between the limiting member 6 and the welding groove 5 is relatively firm, and the process of assembling the limiting member 6 and the welding groove 5 is saved, and the processing is facilitated. Easy to mass production.
  • the limiting member 6 can also be provided as a separate component inside the soldering groove 5 .
  • the inside of the soldering groove 5 is provided with a T-shaped slit (not shown, the same applies hereinafter), and the limiting member 6 is such that the T-shaped member is caught in the T-shaped slit and one end is pierced from the T-shaped slit to form a pair of solder. 4 limits.
  • the welding base 100 is made of a metal material or a metal alloy material.
  • the specific implementation process of the solution is that during the soldering process, the solder 4 (such as solder) melts and flows into the soldering groove 5, and the solder 4 cools to form a solid, so that the soldering groove 5 and the soldered member are fixed in one body, due to the setting limit.
  • the bit member 6, the cooled solder 4 is caught by the stopper 6, and is not easily peeled off. Even if the joint of the solder 4 and the soldering groove 5 is loose, since the stopper 6 is stuck with the solder 4, the solder 4 and the soldered member cannot be detached from the solder joint groove 5, which is safe and reliable.
  • the solution of the present invention provides a limiting member 6 on the inner side of the soldering groove 5 on the basis of the original welding base 100 solution, wherein the limiting member 6 can restrict the longitudinal movement of the solder 4, thereby preventing the solder 4 from being soldered. 5 off.
  • the solder 4 is melted and flows into the soldering groove 5, and the solder 4 is cooled to form a solid, so that the soldering groove 5 is fixed integrally with the object to be soldered, and the cooled solid solder 4 is caught by the limiting member 6 without It is easy to fall off; it solves the technical problem that the welding point is not strong and the solder 4 is easy to fall off in the existing welding scheme.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Arc Welding In General (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

一种焊接基体（100），该焊接基体设有焊槽（5），所述焊槽内侧设有用于在被焊件（3）焊接到焊点（2）处后防止焊料（4）及被焊件从焊槽上松动脱落的限位件（6）。其在现有焊接基体方案的基础上，在焊槽的内侧设置有限位件，其中限位件能防止焊料从焊槽中脱落，解决了现有焊接方案中焊接点不牢固、焊料容易脱落的技术问题。

Description

焊接基体 【技术领域】
本发明涉及焊接技术领域，尤其涉及一种防止焊料脱落的焊接基体。
【背景技术】
在现有的焊接技术中，焊料从焊接基体中脱落的现象很普遍，尤其是表面焊接或者是设置带焊槽的焊接点焊接，被焊接体容易携带焊料从焊接基体中脱落。对于铝质焊接基体与同轴电缆(即被焊接体)焊接，一般要经过涂覆处理，通常在铝质焊接基体焊槽内喷涂一层铜，即覆铜处理。虽然经过覆铜处理，铝质基体与同轴电缆之间焊接后较为牢固，但是其抗震动能力和抗拉能力还是较弱，焊点在经历大震动或者同轴电缆被用力拉动的情况下，同轴电缆容易携带焊锡(即焊料)从焊接基体的焊槽中脱落。
具体请参见附图1和附图2所示，其中图2是图1所示的焊接基体的焊点处的剖视图。图1中示出了将同轴电缆1焊接在铝质焊接基体焊点2处情形，图2中同轴电缆1的外导体3与铝质焊槽5通过焊锡4焊接固定，由于器件震动或用力拉动电缆，会导致焊接点焊锡4从焊槽5中脱落。可见，传统的焊接不牢固，可靠性差，存在安全隐患。
【发明内容】
本发明的目的旨在解决现有技术中焊接方式焊接点不牢固、焊料容易脱落的技术问题，提供一种焊点焊料不能从焊槽中脱落的焊接基体，使得焊接结构牢固可靠。
为实现该目的，本发明采用如下技术方案：
一种焊接基体，该焊接基体设有焊槽，所述焊槽内侧设有用于在被焊件焊接到该焊接基体上后防止焊料及被焊件从所述焊槽上松动脱落的限位件。
优选地，所述限位件横向设于所述焊槽的顶端并伸向内侧或者设于焊槽内侧的侧壁上。
优选地，所述限位件设有至少一对，每对所述限位件相对设置于焊槽上相同高度处。
优选地，所述限位件设有多个，多个所述限位件以相等或不相等高度距离设置在所述焊槽内侧上。
优选地，所述限位件与所述焊槽一体成型，或者所述限位件为独立部件卡设在所述焊槽的顶端并伸向内侧或者卡设于焊槽内侧的侧壁上。
优选地，所述焊槽内侧开设有T型狭缝，所述限位件呈T型且卡设在所述T型狭缝内且使其一端从T型狭缝横向穿出。
优选地，所述焊槽截面呈圆弧状或矩形。
优选地，该焊接基体由金属材料或金属合金材料制成。
与现有技术相比，本发明具备如下优点：
本发明的焊接基体在现有焊接基体方案的基础上，在焊槽的内侧设置有限位件，其中限位件能防止焊料从焊槽中脱落。在焊接过程中，焊料融化后流入焊槽，焊料冷却后形成固体，从而使得焊槽与被焊接体固定为一体，且冷却后的固态焊料被限位件卡住而不容易脱落，解决了现有焊接方案中焊接点不牢固、焊料容易脱落的技术问题。
本发明附加的方面和优点将在下面的描述中部分给出，这些将从下面的描述中变得明显，或通过本实用新型的实施例了解到。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，但本发明不限于此。
图1为现有技术中带焊槽的焊接基体与同轴电缆焊接的立体图；
图2为图1所示的焊接基体的焊接点的剖视图；
图3为本发明一个实施例中的焊接基体的焊接点的剖视图；
图4为本发明另一个实施例中焊接基体的焊接点的剖视图。
【具体实施方式】
下面结合附图和示例性实施例对本发明作进一步地描述，所述实施例的 示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能解释为对本发明的限制。此外，如果已知技术的详细描述对于示出本发明的特征是不必要的，则将其省略。
需要说明的是，本发明的焊接基体针对现有焊接基体存在的焊料容易从焊点处脱落的问题，在焊点处进行改进，也即，本发明的焊接基体与现有焊接基体大体结构相同，不同在于焊点处。因此，为便于图示，图3和图4仅示出本发明的焊接基体在焊点处的结构。
参见图3和图4，本发明提供一种焊接基体100，用于防止焊料4从焊点处脱落，从而保证被焊件3与焊接基体100连接的可靠性。所述焊接基体100在焊点处设有焊槽5，用于容置被焊件3和焊料4，也即被焊件3被焊接在焊槽5内。所述焊槽5上设有用于防止焊料4及被焊件3从该焊槽5上松动脱落的限位件6，具体地，所述限位件6设于所述焊槽5内侧。
优选地，所述限位件6呈条状，沿焊槽5纵长方向延伸且横向设置在所述焊槽5顶端并伸向内侧，从而将焊接完成的焊料4挡止在其内侧，即使焊料4发生松动，也无法沿焊槽5纵向从焊槽5中脱落，使得被焊件3与焊接基体100的连接安全可靠。
在另一个实施方式中，条状的限位件6横向设于焊槽5内侧的侧壁上，优选为设于焊槽5内侧沿纵向的中部位置处，使得在焊接完成后限位件6被焊料4包裹，从而卡住焊料4，即使焊料4发生松动，也不能沿焊槽5纵向移动，从而防止焊料4从焊槽5中脱落。
当然，条状的限位件6也可以其平面与水平面呈其他角度设置在焊槽5内侧。
在其他实施方式中，所述限位件6呈块状、点状，也能实现其限制焊料4松动脱落的功能。此外，限位件6呈环状，熔融的焊料4流入环内空间中凝固，对于焊料4纵向运动的限制效果更佳。
优选地，所述限位件6设有多个，并且多个限位件6被配置成多对相对设置在焊槽5内侧。具体地，每对限位件6设于焊槽5内侧相同或大致相同的高度处，从而从焊槽5两侧固定焊料4，保证被焊件3与焊接基体100的连接。
在另一个实施方式中，所述多个限位件6以相等或不等高度距离设于所述焊槽5内侧，比如多个限位件6呈螺旋状设于焊槽5内侧。
在其他实施方式中，多个限位件6离散分布在焊槽5内侧。
优选地，所述限位件6与所述焊槽5一体成型，使得限位件6与焊槽5的连接较为牢靠，也节省限位件6与焊槽5相组装的工序，方便加工，便于批量生产。
在其他实施方式中，所述限位件6也可以作为独立部件，设于所述焊槽5内侧。例如，焊槽5内侧开设有T型狭缝(图未示，下同)，限位件6为T型件卡于T型狭缝内并且一端从T型狭缝中穿出而形成对焊料4的限制。
优选地，所述焊接基体100由金属材料或者金属合金材料制成。
本方案的具体实施过程是，在焊接过程中，焊料4(如焊锡)熔化后流入焊槽5，且焊料4冷却后形成固体，使焊槽5与被焊件固定为一体，由于设置了限位件6，冷却后的焊料4被限位件6卡住而不容易脱落。即使焊料4与焊槽5的结合处有松动，由于限位件6卡住了焊料4，焊料4和被焊件也无法从焊接点焊槽5中脱落，安全可靠。
综上所述，本发明方案在原有焊接基体100方案的基础上，在焊槽5的内侧设置有限位件6，其中限位件6能限制焊料4的纵向移动，从而防止焊料4从焊槽5中脱落。在焊接过程中，焊料4融化后流入焊槽5，焊料4冷却后形成固体，从而使得焊槽5与被焊接体固定为一体，且冷却后的固态焊料4被限位件6卡住而不容易脱落；解决了现有焊接方案中焊接点不牢固、焊料4容易脱落的技术问题。
在此处所提供的说明书中，虽然说明了大量的具体细节。然而，能够理解，本发明的实施例可以在没有这些具体细节的情况下实践。在一些实施例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
虽然上面已经示出了本发明的一些示例性实施例，但是本领域的技术人员将理解，在不脱离本发明的原理或精神的情况下，可以对这些示例性实施例做出改变，本发明的范围由权利要求及其等同物限定。

Claims (9)

  1. 一种焊接基体，其特征在于：该焊接基体的焊点处设有焊槽，所述焊槽内侧设有用于在被焊件焊接到焊点处后防止焊料及被焊件从焊槽上松动脱落的限位件。
  2. 根据权利要求1所述的焊接基体，其特征在于：所述限位件横向设于所述焊槽的顶端并伸向内侧或者设于焊槽内侧的侧壁上。
  3. 根据权利要求2所述的焊接基体，其特征在于，所述限位件设有至少一对，每对所述限位件相对设置于焊槽上相同高度处。
  4. 根据权利要求2所述的焊接基体，其特征在于，所述限位件设有多个，多个所述限位件以相等或不相等高度距离设置在所述焊槽内侧上。
  5. 根据权利要求1所述的焊接基体，其特征在于：所述限位件与所述焊槽一体成型。
  6. 根据权利要求1所述的焊接基体，其特征在于：所述限位件为独立部件卡设于所述焊槽的顶端或者卡设于焊槽内侧的侧壁上。
  7. 根据权利要求6所述的焊接基体，其特征在于：所述焊槽内侧开设有T型狭缝，所述限位件呈T型且卡设在所述T型狭缝内且使其一端从T型狭缝横向穿出。
  8. 根据权利要求1所述的焊接基体，其特征在于，所述焊槽截面呈圆弧状或矩形。
  9. 根据权利要求1所述的焊接基体，其特征在于：该基体由金属材料或金属合金材料制成。
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US11154954B2 (en) 2021-10-26
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