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Method for manufacturing low-cost tungsten electrode

A tungsten electrode, a low-cost technology, is applied in the direction of using liquid cleaning methods, cleaning methods and utensils, chemical instruments and methods, etc., to achieve the effects of convenient welding construction and use, increasing homogeneity, and reducing costs

Inactive Publication Date: 2015-01-07
建德市横山钨业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned tungsten-nickel electrodes have the following disadvantages: because the two metals, nickel rod and tungsten rod, need to be punched and sheared, sand blasted and cleaned at the same time in the production process, the price of nickel material is not low, and it is still replaced by other materials possibility of

Method used

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  • Method for manufacturing low-cost tungsten electrode
  • Method for manufacturing low-cost tungsten electrode
  • Method for manufacturing low-cost tungsten electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1) Using traditional powder metallurgy, swaging, drawing, and cutting to prepare tungsten electrodes, the length of the tungsten electrode rod is only 3 / 4 to 4 / 5 of the current standard length of tungsten electrodes of various specifications;

[0044] 2) Take the Cr-W-Mo-V alloy steel rod with the same diameter as the tungsten electrode rod;

[0045] 3) Put the above-mentioned tungsten electrode rod and alloy steel rod into an ultrasonic cleaning device equipped with an environmentally friendly water-based cleaning agent for ultrasonic cleaning. ~1000W, vibration washing time is 10~60min;

[0046] 4) Put the cleaned tungsten electrode and alloy steel rod into an ultrasonic cleaning device equipped with deionized water for ultrasonic cleaning. 300~600W, vibration washing time is 5~10min; then take out the tungsten electrode and alloy steel rod, put them into the ultrasonic cleaning device with deionized water again and repeat cleaning 2~5 times;

[0047] 5) Put the abo...

Embodiment 2

[0059] Steps 1) to 7) are the same as described in Example 1;

[0060] 8) Preparation of flux: Weigh 250g of each raw material powder according to the ratio in Table 2, mix them evenly, put them into a stainless steel ball mill tank, then add 100~300ml of ethanol and 0.25~2.5kg of hard alloy balls; set planetary The speed of the ball mill is 100~300r / min, argon gas is introduced into the ball mill tank, and the grinding time is 30~50h; the obtained composite powder is dried under a power of 100~500W infrared lamp for 5~10min for later use;

[0061] Table 2 The raw material formula of flux

[0062]

[0063] 9) Add 3.13~31.3g of polyethylene glycol PEG400 and 30~240g of ethanol to the composite powder obtained above, perform ball milling at a speed of 50~100r / min for 15~30 min, and add 2.5~25g of Foaming agent (one selected from emulsified silicone oil, high-carbon alcohol fatty acid ester complex, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyo...

Embodiment 3

[0068] 1) A tungsten electrode rod with a diameter of 2.4mm and a length of 140mm is prepared by traditional powder metallurgy, swaging, drawing, and cutting processes for preparing tungsten electrodes;

[0069] 2) Take a Cr-W-Mo-V alloy steel rod with a diameter of 2.4mm and a length of 35mm;

[0070] 3) Put the above-mentioned tungsten electrode rod and alloy steel rod into an ultrasonic cleaning device equipped with an environmentally friendly water-based cleaning agent for ultrasonic cleaning. Washing time is 30min;

[0071] 4) Put the cleaned tungsten electrode and alloy steel rod into an ultrasonic cleaning device equipped with deionized water for ultrasonic cleaning. The ultrasonic cleaning frequency is 80kHz, the solvent temperature is controlled at 20~50°C, and the ultrasonic power is 400W. The vibration washing time is 5 minutes; then take out the tungsten electrode and alloy steel rod, put them into the ultrasonic cleaning device with deionized water again and repe...

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Abstract

The invention discloses a method for manufacturing a low-cost tungsten electrode. According to the method for manufacturing the low-cost tungsten electrode, a tungsten electrode rod and a Cr-W-Mo-V alloy steel rod are connected to form the low-cost tungsten electrode through a specific connecting method. The welding performance of the end of the tungsten electrode is ensured, conventional tungsten electrodes can be replaced under various stations, and the standard length of a tungsten electrode product can be obtained under the condition of saving the tungsten materials. Welding construction and use are facilitated, and the production cost and argon arc welding construction cost are saved.

Description

technical field [0001] The invention relates to a method for preparing a low-cost tungsten electrode. Background technique [0002] Due to the characteristics of tungsten, high melting point (3683°C±20°C), strong electron emission ability, high elastic modulus, and low vapor pressure, it has been used as a thermal electron emission material for a long time. Because tungsten also has high melting point, corrosion resistance, high density, good thermal conductivity and electrical conductivity, tungsten electrodes made of tungsten are widely used in welding, especially suitable for TIG welding and other similar electrode materials . [0003] At present, the commonly used tungsten electrodes are made of tungsten-based doped with some rare earth oxides with low electron work function through powder metallurgy and mechanical processing, which is a one-time molding process as a whole. However, in the actual use of tungsten electrodes, due to the need for clamping, 3~5cm of the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/002B23K1/20B23P15/00
CPCB08B3/12B23K31/02B23K35/32B23K35/40B23P15/00
Inventor 顾进跃徐玄顾伟华袁克艳
Owner 建德市横山钨业有限公司
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