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A kind of twin wire drawing method of rare earth tungsten electrode material

An electrode material, rare earth tungsten technology, applied in the field of rare earth refractory metal functional material processing, can solve the problems of waste of energy consumption, high cost, low yield of electrode processing, etc., to reduce the temperature of the heating furnace, increase the wire drawing speed, and significantly The effect of saving energy and reducing consumption

Active Publication Date: 2016-12-07
BEIJING GENERAL RES INST OF MINING & METALLURGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the addition of rare earth second phase particles, a pinning effect is formed on the tungsten grain boundary, which makes the processing performance of the rare earth tungsten electrode worse, especially in the wire drawing process. The processing methods in the prior art are prone to failures such as wire breakage and burrs. This results in low electrode processing yield and high cost, hindering the popularization and application of rare earth tungsten electrodes
In addition, tungsten wire drawing involves many dies, and the efficiency of single die drawing is low, which cannot make full use of the heating zone of the heating furnace, resulting in waste of energy consumption

Method used

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Examples

Experimental program
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Effect test

specific Embodiment approach

[0014] The double wire drawing method of the rare earth tungsten electrode material of the present invention, its preferred embodiment is:

[0015] Include steps:

[0016] First, put the two drawing dies in the double drawing die box, place the die box in the drawing die frame, and set the heating temperature of the drawing die to 400-450°C;

[0017] Afterwards, when the temperature of the heating furnace rises to 1300-1350°C, keep the constant temperature, sharpen the heads of two Φ3.5mm rare earth tungsten rods, lubricate them with graphite emulsion, and pass through the two rods after being heated by the heating furnace. A Φ3.0mm wire drawing die, the two rare earth tungsten rods are respectively clamped by the chain trolley and advanced at a drawing speed of 5-6m / min, realizing the double-mode drawing of the rare earth tungsten rod;

[0018] Then, reduce the diameters of the wire drawing die and the rare earth tungsten rod in turn, lower the furnace temperature, speed up ...

specific Embodiment

[0029] 1. Put the two wire drawing dies in the double drawing die box, the mold box is placed in the drawing die frame, the die frame is heated by electric rods, and the heating temperature of the wire drawing die is set to 400°C; when the furnace temperature rises to 1300°C, fix Heating power, the two La 2 o 3 The total weight percentage is 2-2.2%, and the diameter is 3.5mm. After the head of the rare earth tungsten rod is tipped, it is lubricated by graphite emulsion, and after being heated by a heating furnace, it passes through two Φ3.0mm wire drawing dies respectively, and is separated by a chain trolley. Clamp two tungsten wires and move forward at a drawing speed of 6m / min to realize double-mode drawing of Φ3.0mm tungsten wires. Repeat the above actions after replacing the wire drawing die. Different heating furnace temperatures and wire drawing speeds are used for different wire drawing dies. The order is: Φ2.5mm wire drawing die, furnace temperature 1150°C, wire draw...

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Abstract

The invention discloses a double-wire drawing method of rare earth tungsten electrode material. The method comprises the following steps: placing two wire drawing moulds in a dual-drawing mould box; placing the mold box in a wire drawing mold frame; setting the heating temperature of the wire drawing moulds to be 400 to 450 DEG C; when a heating furnace is heated to 1,300 to 1,350 DEG C, keeping the temperature constant, sharpening the heads of two rare earth tungsten rods with the diameter of 3.5 mm, and lubricating through graphite cream; heating the two rare earth tungsten rods by the heating furnace; making the two rare earth tungsten rods penetrate through the two wire drawing moulds with the diameter of 3.0 mm; respectively clamping the two rare earth tungsten rods by a chain-type trolley and making the chain-type trolley forward at the wire drawing speed of 5 to 6 m / min, so that dual-mould drawing of the rare earth tungsten rods is realized; reducing the diameters of the wire drawing moulds and the rare earth tungsten rods in sequence; reducing furnace temperature and increasing the wire drawing speed in sequence; repeating the actions. The temperature of the heating furnace is greatly reduced; energy is saved; the consumption is reduced; the wire drawing speed is improved gradually and greatly; two wires are drawn in the whole wire drawing process, so that the efficiency is improved by 100 percent.

Description

technical field [0001] The invention relates to a rare earth refractory metal functional material processing technology, in particular to a double wire drawing method of a rare earth tungsten electrode material. Background technique [0002] Tungsten electrode is a key heat source material widely used in argon arc welding, plasma welding, spraying, cutting technology and metallurgical industry. It is suitable for welding almost all metal materials, especially non-ferrous metals and their alloys, stainless steel, superalloys , titanium and titanium alloys, and refractory active metals. Among them, thoriated tungsten electrodes have excellent welding performance, but thorium is naturally radioactive, and its production and use will pollute the environment and endanger human health. Therefore, with the increasing awareness of human environmental protection, a lot of research and development work on how to replace radioactive thoriated tungsten electrodes has been carried out at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C1/02B21C9/00
CPCB21C1/02B21C9/00
Inventor 章德铭彭鹰刘家均李曹兵王芦燕崔云涛巫正瑜孙宝成
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY