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Electrode for vacuum self-consuming furnace and welding method thereof and vacuum self-consuming melting feeding method

A vacuum consumable furnace and consumable electrode technology, which is applied in the direction of electric heating devices, electrical components, heating through discharge, etc., can solve the problem of residual weight deviation of consumable electrode weight, large variation range of ingot shrinkage cavity depth, and influence on compensation The stability of the shrinkage effect and other issues can be achieved to achieve the effects of reducing consumption, improving skinning efficiency, and reducing the consumption of turning tools

Active Publication Date: 2016-05-25
PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, due to the inconsistency of the electrode density and the size of each part, the current density on the end surface of the consumable electrode is inconsistent, resulting in inconsistent melting speed of the end surface.
On the one hand, this will cause the end face of the consumable electrode to form various extremely irregular branch shapes, and some parts will gradually fall down into the molten pool below, some of which are melted, and some are not, resulting in the quality of the end face On the other hand, due to the inconsistent melting speed of the end face, the weight of the remaining consumable electrode gradually deviates from the expected remaining weight, which seriously affects the stability of the feeding effect and causes the shrinkage cavity depth of the ingot to change large range

Method used

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  • Electrode for vacuum self-consuming furnace and welding method thereof and vacuum self-consuming melting feeding method
  • Electrode for vacuum self-consuming furnace and welding method thereof and vacuum self-consuming melting feeding method

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preparation example Construction

[0025] In the present invention, the selection of the material of the auxiliary electrode is not particularly limited, it can be selected according to the conventional methods in this field, usually a material with a slightly higher hardness is selected, for example, titanium alloys with models TA1, TA2, TA3, and TA4 are selected. . The material of the consumable electrode is the same as that of the ingot. The material of the transition electrode is preferably the same as that of the ingot. In order to make full use of resources and reduce costs, in a preferred embodiment, the transition electrode is made of a billet head formed during the forging process of an ingot melted in a vacuum consumable furnace. The specific production method can be carried out according to the conventional methods in this field. For example, the preparation method of the transition electrode can include: forging the billet head formed in the process of forging and opening the ingot obtained by smel...

Embodiment approach

[0028] According to a specific embodiment of the present invention, the preparation method may include: firstly connecting the power supply to the transition electrode and the auxiliary electrode, so that the arc heat generated between the transition electrode and the auxiliary electrode melts one end surface of the transition electrode to form a molten pool, and then Cut off the power supply, and insert the auxiliary electrode into the molten pool. After cooling, the auxiliary electrode and the transition electrode are welded together; The arc heat generated during the arc makes the upper end of the consumable electrode melt to form a molten pool, then cut off the power supply, insert the other end of the transition electrode into the molten pool, and after cooling, the transition electrode and the consumable electrode are welded together.

[0029] According to a specific embodiment of the present invention, the preparation method may include: figure 1 In the connection mode ...

Embodiment 1

[0041] Use the vacuum consumable furnace to melt the obtained ingot and form the billet head during the forging process to make a transition electrode with a diameter of 620mm and a length of 500mm, and prepare an auxiliary electrode with a diameter of 400mm and a length of 500mm and an auxiliary electrode with a diameter of 900mm and a length Consumable electrodes of 3000mm. according to figure 1 In the connection mode shown, first connect the power supply to the transition electrode and the auxiliary electrode (the current is 3kA, the voltage is 24V), and then gradually increase the current to 9kA, so that the arc heat generated between the transition electrode and the auxiliary electrode makes the transition electrode a After the end surface melts to form a molten pool (it takes about 10 minutes), cut off the power supply and insert the auxiliary electrode into the molten pool. After cooling, the auxiliary electrode is welded with the transition electrode; then connect the ...

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Abstract

The invention relates to the field of nonferrous metal melting, and specifically relates to an electrode for a vacuum self-consuming furnace, a welding method of the electrode and a vacuum self-consuming melting feeding method using the electrode. The electrode for a vacuum self-consuming furnace comprises a self-consuming electrode and an auxiliary electrode and is characterized in that a transition electrode is further connected between the self-consuming electrode and the auxiliary electrode. The electrode for a vacuum self-consuming furnace can effectively reduce the operating cost, improve the ingot yield and improve the quality of an ingot feeding end face.

Description

technical field [0001] The invention relates to the field of non-ferrous metal smelting, in particular to an electrode for a vacuum consumable furnace, a welding method for the electrode, and a feeding method for vacuum consumable smelting using the electrode. Background technique [0002] With the development of technology, the quality requirements for titanium ingots are getting higher and higher, which requires improvement and innovation in smelting methods in order to produce high-quality titanium ingots. [0003] Vacuum consumable smelting of titanium and titanium alloys usually involves welding the consumable electrode to the auxiliary electrode, and suspending the auxiliary electrode on the electrode rod of the consumable furnace for smelting. When smelting in this way, there will be the following two problems: [0004] 1) The auxiliary electrode will be gradually consumed as the number of smelting increases. This is because on the one hand, the auxiliary electrode ...

Claims

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Application Information

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IPC IPC(8): H05B7/07C22B9/21C22B34/12
CPCC22B9/20C22B34/1295H05B7/07
Inventor 翟信杰陈鑫郑贵斌周文郎
Owner PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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