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Brazing method of large area cemented carbide with standing wave confinement

A technology of cemented carbide and brazing method, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of cemented carbide cracking, large stress, scrapping of workpieces, etc., so as to improve the brazing rate and improve the connection strength. , to ensure the effect of performance

Active Publication Date: 2015-10-07
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the brazing connection of dissimilar metals, especially the connection between cemented carbide and ordinary metals, due to the large difference in thermal expansion coefficient between the two, there is a large stress on the workpiece at the brazing interface, which can seriously cause cemented carbide Cracking, workpiece scrapping

Method used

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  • Brazing method of large area cemented carbide with standing wave confinement
  • Brazing method of large area cemented carbide with standing wave confinement
  • Brazing method of large area cemented carbide with standing wave confinement

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Embodiment Construction

[0018] Such as figure 1 As shown, the special brazing device with a standing wave generating device of the present invention includes a crucible 1 and a heating device that is placed outside the crucible 1, and the heating device is composed of an induction coil 10 that is controlled by a power supply 9 and surrounds the outside of the crucible; the crucible 1 A support truss 2 is arranged outside, and a group of vertical guide rails 3 extending into the crucible 1 are arranged on the support truss above the crucible, and the alloy block clamping device 4 moves up and down along the vertical guide rails 3; A horizontal guide rail 5 extending into the crucible is provided; a standing wave generating device is provided in the crucible 1: the standing wave generating device is an oscillating motor 7 controlled by a waveform control system 6 and driven by the oscillating motor 7 and evenly distributed on the crucible 1 The inner ceramic oscillating plate 8.

[0019] In order to e...

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Abstract

The invention discloses a stationary wave restrained large-area hard alloy soldering method, which is characterized in that special soldering equipment with a stationary wave generating device is used, first, after a solder is placed in a crucible for being fused, stationary waves are formed on the surface of the fused solder by the stationary wave generating device, after a to-be-soldered hard alloy piece is contacted with the wave crest on the surface of the fused solder, and the solder forms regular dotted or strip distribution on the to-be-soldered surface of the hard alloy, and then is connected with a metallic matrix to form discontinuous solder joints or strip soldering seams in regular distribution on a soldering interface between the hard alloy piece and the metallic matrix. The invention also discloses the special soldering equipment used in the method. The soldering method has the beneficial effects that a stress line accumulated on the soldering interface of the hard alloy is cut off, the stress of the soldering joint of the hard alloy is released, the cracking risk of a hard alloy tool during soldering is eliminated, and a new method is provided for solving the problem of overlarge stress due to soldering two large-area metals with different coefficients of thermal expansion.

Description

technical field [0001] The invention relates to the field of brazing technology, in particular to a large-area cemented carbide brazing method constrained by standing waves, and also relates to special equipment used in the brazing method. Background technique [0002] Cemented carbide tools play a pivotal role in modern industry due to their high hardness and high wear resistance, but due to the high price of its main constituent element - tungsten and the lack of toughness of cemented carbide itself, cemented carbide tools are common The most common form is to only embed a hard alloy block on the effective working part of the workpiece, and the hard alloy block and the metal substrate are connected as a whole through the brazing technology of dissimilar metals. For the brazing connection of dissimilar metals, especially the connection between cemented carbide and ordinary metals, due to the large difference in thermal expansion coefficient between the two, there is a large...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/06B23K1/20
Inventor 龙伟民张青科裴夤崟钟素娟朱坤樊江磊黄俊兰张雷李秀朋吕登峰侯江涛黄小勇
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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