Induction welding method for aluminum water-cooling base plate and stainless joint

A technology of water-cooled base plate and induction welding, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc. It can solve the problems of locomotives not running normally, difficult to control welding temperature, and burning out electrical components, etc. Intelligent protection, automatic welding control and safe operation
CN101642840AActive Publication Date: 2010-02-10CRRC DALIAN INST CO LTD
0 Cites 18 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CRRC DALIAN INST CO LTD
Publication Date
2010-02-10

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to an induction welding method for an aluminum water-cooling base plate and a stainless joint, which mainly comprises the following steps: processing the stainless joint and thewater-cooling base plate by sodium hydroxide and sulfuric acid solution and drying; bending a zinc-aluminum alloy flux-cored welding wire with a melting point of 420-480 DEG C into a circle and placing the zinc-aluminum alloy flux-cored welding wire to the root part of the stainless joint exposing out of the end surface of the water-cooling base plate and the chamfering position of a screw hole ofthe end surface of the water-cooling base plate; connecting an induction coil of the water-cooling base plate with one induction heating power supply and placing the water-cooling base plate into theinduction coil; connecting an induction coil of the stainless joint with the other high frequency induction heating power supply and placing the stainless joint into the induction coil. The temperature in the welding position of the water-cooling base plate rises to 450-480 DEG C and the temperature in the welding position of the stainless joint rises to 500-550 DEG C during welding. The invention more ideally solves the problem of welding two different material components of aluminum and stainless steel; welded brazing filler metal has full and even appearance and completely fills a seam andcan lead the welding position to be sealed permanently; and the stable working state of an IGBT power module is ensured.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a processing method for an IGBT power module constant temperature cooling device of an electric locomotive and an EMU. Background technique

[0002] At present, the constant temperature cooling devices of the IGBT power modules of electric locomotives and EMUs generally use aluminum water-cooled substrates, that is, dozens of water-cooled substrates are installed in the high-voltage electrical cabinet of an electric locomotive or EMU, and each water-cooled substrate is installed. more than one IGBT power module. The above-mentioned water-cooled substrate is mainly composed of a water-cooled tank plate, a water-cooled cover plate, soldering tabs, and stainless steel joints. The processing method of the aluminum water-cooled base plate mainly includes: welding the rough machined water-cooled tank plate and water-cooled cover plate with welding pieces through vacuum brazing, and then drilling two Φ10.8 holes on the end face and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More