Double induction and arc composite heating additive device and method for tungsten carbide powder core wire

A tungsten carbide powder and induction heating technology, applied in electrode support devices, additive processing, metal processing equipment, etc., can solve the problems of low overall density and poor coating surface forming, and improve melting characteristics and equipment costs. Low, additively efficient effects

Active Publication Date: 2022-07-19
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method realizes the preparation of tungsten carbide coating, but the surface shape of the coating is poor and the overall density is not high

Method used

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  • Double induction and arc composite heating additive device and method for tungsten carbide powder core wire
  • Double induction and arc composite heating additive device and method for tungsten carbide powder core wire
  • Double induction and arc composite heating additive device and method for tungsten carbide powder core wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Using the device of the above invention to carry out the addition of tungsten carbide powder core wire with a diameter of 1.6mm and a tungsten carbide content of 10%, the specific steps are as follows:

[0044] Step 1: After selecting the plasma arc additive process parameters of the tungsten carbide powder core wire 3, the robot control cabinet 15 and the touch screen automatic control platform 18 are started;

[0045] Step 2: First, the touch-screen automatic control platform 18 sends a control signal through the robot control cabinet 15 connected to it, and the robot control cabinet 15 simultaneously activates the high-frequency power supply I401 and the high-frequency power supply II6 through the dual induction heating power controller 17, according to the setting tungsten carbide powder core wire induction heating frequency f 1 =90KHz, the induction heating current is I 1 = 80A, the induction heating frequency of the front layer metal is f 2 =200KHz, the inductio...

Embodiment 2

[0053] Using the device of the above invention to carry out the addition of tungsten carbide powder core wire with a diameter of 1.6mm and a tungsten carbide content of 20%, the specific steps are as follows:

[0054] Step 1: After selecting the plasma arc additive process parameters of the tungsten carbide powder core wire 3, the robot control cabinet 15 and the touch screen automatic control platform 18 are started;

[0055] Step 2: First, the touch-screen automatic control platform 18 sends a control signal through the robot control cabinet 15 connected to it, and the robot control cabinet 15 simultaneously activates the high-frequency power supply I401 and the high-frequency power supply II6 through the dual induction heating power controller 17, according to the setting tungsten carbide powder core wire induction heating frequency f 1 is 100KHz, and the induction heating current is I 1 is 90A, the front metal induction heating frequency f 2 =300KHz, the induction heatin...

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Abstract

The invention discloses a tungsten carbide powder core wire double induction and electric arc composite heating additive device and method, the device comprises a tungsten carbide powder core wire induction heating module and the like. The additive process is to use induction high-frequency heating to heat the front layer metal before adding material, double induction heating of tungsten carbide powder core wire induction heating module and lift induction heating module, and use dual infrared synchronous temperature measurement to control the tungsten carbide separately. The heating temperature of the powder core wire and the front layer metal can be added by means of plasma arc and induction composite heating. The invention effectively increases the temperature of the tungsten carbide cladding substrate by inductively heating the front layer metal, suppresses the generation of cracks in the process of tungsten carbide addition, and solves the problem of cracking between cladding layers; Its temperature can solve the difficult problem of melting of tungsten carbide powder core wire and fusion between layers by compound heating with arc, and the tungsten carbide additive component prepared by this method has a denser structure and more stable performance.

Description

technical field [0001] The invention belongs to the technical field of arc additive manufacturing, and mainly relates to a double induction and arc composite heating additive device and method for tungsten carbide powder core wire. Background technique [0002] As a cemented carbide, tungsten carbide is widely used in military industry, aerospace industry due to its high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and a series of excellent properties, especially its high hardness and wear resistance. , machining, metallurgy, oil drilling, mining tools, electronic communications, construction and other fields. However, due to its characteristics of large thermal expansion coefficient and strong temperature sensitivity, it has the shortcomings of high brittleness and poor toughness, which leads to defects such as cracks, shrinkage cavities, and poor fusion in arc deposition, and it is impossible to achieve multi-layer continuou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K28/02B23K9/28B23K9/32B23K10/02B33Y10/00B33Y30/00
CPCB23K28/02B23K9/28B23K9/32B23K10/02B33Y10/00B33Y30/00
Inventor 冯曰海夏杰凌壮壮王克鸿黄俊周琦
Owner NANJING UNIV OF SCI & TECH
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