Radiation-free multi-component rare earth tungsten electrode material and preparing method thereof

A multi-component composite, electrode material technology, used in welding/cutting media/materials, manufacturing tools, welding equipment, etc., can solve problems such as inability to fully exert performance, achieve good sintering effect, reduce cracking, and better performance.

Inactive Publication Date: 2014-06-18
深圳市威勒科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is adding a single oxide, or adding a ternary or multi-element oxide, it is a composite effect of components from the perspective of materials science. Each oxide particle exists in a separate phase in the tungsten matrix, and there is no tungsten involved. Alloying, still can not give full play to the performance, now there is an urgent need for a tungsten electrode material that is non-radiative, easy to process and has better performance

Method used

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  • Radiation-free multi-component rare earth tungsten electrode material and preparing method thereof
  • Radiation-free multi-component rare earth tungsten electrode material and preparing method thereof
  • Radiation-free multi-component rare earth tungsten electrode material and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Weigh 19.93g of lanthanum nitrate, 26.13g of zirconium nitrate, 25.44g of yttrium nitrate, 14.28g of lutetium nitrate and 21.6g of ammonium rhenate powder, and configure it into a mixed solution, add 1834.8g of tungsten trioxide powder, stir well, heat and dry to obtain Mix the powder, reduce the mixed powder with hydrogen in a reduction furnace with a temperature of 400°C for 45 minutes, then reduce the mixed powder with hydrogen in a reduction furnace with a temperature of 700°C for 45 minutes, and reduce the mixed powder after two reductions Sieve and set aside. After the sieved mixed powder is fully stirred evenly, weigh 500g and fill it into a soft film bag, put the bag into a cold isostatic press and press it into a cylindrical billet weighing 500g, and the pressing pressure is set at 1000Kg / cm 2 . Pre-sinter the pressed billet under the protection of hydrogen, the sintering temperature is 1100°C, the loading capacity is 5 boats / boat, the sintering time is 30min,...

Embodiment 2

[0020] Weigh 19.93g of lanthanum nitrate, 26.13g of zirconium nitrate, 25.44g of yttrium nitrate, 14.28g of lutetium nitrate and 21.6g of ammonium rhenate powder, and configure it into a mixed solution, add 1834.8g of tungsten trioxide powder, stir well, heat and dry to obtain Mix the powder, reduce the mixed powder with hydrogen in a reduction furnace at a temperature of 500°C for 60 minutes, then reduce the mixed powder with hydrogen in a reduction furnace at a temperature of 800°C for 60 minutes, and reduce the mixed powder after two reductions Sieve and set aside. After the sieved mixed powder is fully stirred evenly, weigh 1000g and fill it into a soft film bag, put the bag into a cold isostatic press and press it into a cylindrical billet weighing 1000g, and the pressing pressure is set at 1500Kg / cm 2 . Pre-sinter the pressed billet under the protection of hydrogen, the sintering temperature is 1200°C, the loading capacity is 8 boats / boat, the sintering time is 50min, a...

Embodiment 3

[0022] Weigh 19.93g of lanthanum nitrate, 26.13g of zirconium nitrate, 25.44g of yttrium nitrate, 14.28g of lutetium nitrate and 21.6g of ammonium rhenate powder, and configure it into a mixed solution, add 1834.8g of tungsten trioxide powder, stir well, heat and dry to obtain Mix the powder, reduce the mixed powder with hydrogen in a reduction furnace at a temperature of 700°C for 75min, then reduce the mixed powder with hydrogen in a reduction furnace with a temperature of 1000°C for 75min, pass the mixed powder after twice reduction Sieve and set aside. After the sieved mixed powder is fully stirred evenly, weigh 2500g and fill it into a soft film bag, put the bag into a cold isostatic press and press it into a cylindrical billet weighing 2500g, and the pressing pressure is set at 3000Kg / cm 2 . Pre-sinter the pressed billets under the protection of hydrogen, the sintering temperature is 1300°C, the loading capacity is 10 boats / boat, the sintering time is 60min, and the pre...

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Abstract

The invention discloses a radiation-free multi-component rare earth tungsten electrode material and a preparing method thereof. The radiation-free multi-component rare earth tungsten electrode material contains lanthanum oxide, zirconia, yttrium oxide, lutecia, rhenium and tungsten. The mass percent of each rare earth oxide in the material is 0.5-1.5%, the mass percent of the total quantity of the rare earth oxide in the material is 2-3%, the mass percent of alloy element rhenium in the material is 1-4%, and the balance is tungsten. The preparing method for the radiation-free multi-component rare earth tungsten electrode material comprises the procedures of solution disposition, drying, reduction, isostatic cool pressing, sintering, vertical melting, medium frequency induction annealing, B202 rotary forging, B201 rotary forging, drawing, straightening, cutting, polishing and grinding. The prepared radiation-free multi-component rare earth tungsten electrode material is easy to machine and better in use performances.

Description

technical field [0001] The invention relates to a tungsten electrode material and a preparation method thereof, in particular to a radiation-free multi-element composite rare earth tungsten electrode material and a preparation method thereof. Background technique [0002] Non-melting electrode argon arc welding is also called tungsten argon arc welding or tungsten inert gas shielded welding, that is, under the protection of inert gas, an arc welding method is used to melt the base metal and filler metal by using the arc generated between the workpiece and the workpiece. . The non-melting tungsten electrode plays the role of emitting electrons to generate an arc, and the filler wire is fed from one side, and the filler metal and the workpiece are fused together under the action of the arc heat to form a weld. Tungsten has a high melting point, strong electron emission capability, low electron work function, high elastic modulus, and low vapor pressure, so it has been used as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/32B23K35/40
CPCB23K35/222B23K35/402
Inventor 顾进跃徐玄顾伟华袁克艳
Owner 深圳市威勒科技股份有限公司
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