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A solder-assisted method for measuring the temperature of the nugget during friction stir welding

A friction stir welding and auxiliary measurement technology, which is applied to thermometers, measuring devices, and heat measurement, can solve the problem that the temperature in the nugget area cannot be measured, and achieve the effects of low cost, good adaptability, and easy realization

Active Publication Date: 2018-07-03
安徽万宇机械设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that the temperature of the nugget area cannot be measured in the actual measurement process of the friction stir welding temperature field, the present invention proposes a method for assisting the measurement of the temperature of the nugget area in the process of friction stir welding with solder

Method used

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  • A solder-assisted method for measuring the temperature of the nugget during friction stir welding
  • A solder-assisted method for measuring the temperature of the nugget during friction stir welding
  • A solder-assisted method for measuring the temperature of the nugget during friction stir welding

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specific Embodiment approach 1

[0018] Specific implementation mode one: combine Figure 1 to Figure 6 Describe this implementation mode, this implementation mode is realized through the following steps:

[0019] Step 1, preparing zinc-aluminum solder flakes 1: preparing zinc-aluminum solder with aluminum content from low to high, the aluminum content is 10%, 20%, 30%, 40%, and making each zinc-aluminum solder Form zinc-aluminum solder sheet 1, the thickness of zinc-aluminum solder sheet 1 is 0.1mm~0.3mm, the length a is 2mm, and the height b is half of the thickness of the workpiece to be welded; according to experiments, it can be obtained that the aluminum content is 10% , 20%, 30%, and 40% zinc-aluminum solder respectively corresponding to the melting point;

[0020] Step 2. Paste zinc-aluminum brazing filler metal sheets 1 with different contents on the interface of butt joint or lap joint: place the first workpiece A to be welded and the second workpiece B to be welded on the workbench in a manner of ...

specific Embodiment approach 2

[0023] Specific implementation mode two: combination figure 1 and Figure 4 Describe this implementation mode. In this implementation mode, the first workpiece A to be welded and the second workpiece B to be welded in step 2 are of the same metal material or dissimilar metal materials. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Specific implementation mode three: combination figure 1 and Figure 4 Describe this embodiment. In this embodiment, the thickness of the first workpiece A to be welded is equal to the thickness of the second workpiece B to be welded in step 2. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a method utilizing solder for assisting in measurement of the weld nugget zone temperature in a friction stir welding process and solves a problem that the weld nugget zone temperature of a friction stir welding temperature field in a practical measurement process can not be measured. The method comprises steps that 1, various types of Zn-Al solder with aluminum element contents from low to high are prepared, each type of Zn-Al solder is made into Zn-Al solder sheets; 2, the Zn-Al solder sheets with different contents are pasted on butt joint or overlapping interfaces; 3, a friction stir welding machine starts, a stirring head is welded in a welding direction; and 4, after welding, the solder is extracted from the pasting position of each type of the Zn-Al solder sheets for the friction stir welding weld, weld cross sections are observed through a metallographic microscope, if no solder solid is observed at a weld nugget zone, only a few of solder solid fragments are scattered at a thermo-mechanically affected zone, the solder is determined to just melt in the friction stir welding process, and the melting point of the solder is equal to the temperature of the weld nugget zone in the friction stir welding process. The method is used for measuring the temperature of the weld nugget zone in the friction stir welding process.

Description

technical field [0001] The invention relates to a method for measuring welding temperature, in particular to a method for assisting solder to measure the temperature of a nugget area in a friction stir welding process. Background technique [0002] Friction stir welding (FSW) is an advanced solid phase joining technology invented by the Welding Institute (TWI) in 1991. The feature of this technology is that the high-speed rotating stirring head 2 is inserted into the designated position of the workpiece. At this time, the stirring needle is inserted into the interior of the workpiece, and the shoulder of the shaft is pressed against the surface of the workpiece. The high-speed rotating stirring head 2 interacts with the base material to generate a large amount of frictional heat, making the base material in a thermoplastic state, and the material flows under the stirring action of the stirring needle. The stirring head 2 moves forward while rotating at a high speed, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/06
CPCG01K11/06
Inventor 万龙王耀彬刘铁铮黄体方谢聿铭吕宗亮黄永宪
Owner 安徽万宇机械设备科技有限公司
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