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Multifunctional electric melting furnace

An electric melting furnace, multi-functional technology, applied in the direction of electric furnace, furnace, furnace type, etc., can solve the problems of difficult compatible production of various products, difficult to distinguish temperature control of continuous furnace, difficult to control product size, etc., to improve quality and mechanical strength performance, ease of replacement

Pending Publication Date: 2020-11-20
JIANGSU PACIFIC QUARTZ
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to achieve differential temperature control in existing continuous melting furnaces. To ensure molding, defects such as bubbles inside the product are likely to increase due to insufficient smelting temperature. However, to ensure high-temperature smelting effects, it is easy to cause the temperature in the molding area to be too high and the product size is difficult to control.
Moreover, the existing continuous melting furnaces need to use multiple continuous melting furnaces to produce different types of products, and it is difficult to achieve compatible production of various products

Method used

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  • Multifunctional electric melting furnace
  • Multifunctional electric melting furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A multifunctional electric melting furnace, comprising a furnace body 3, a furnace cover 2, and a central furnace cover 21, the central furnace cover 21 is connected to the furnace cover 2 through a liftable crucible seat 19, and the central furnace cover 21 is provided with a deflection adjustment device 1. Furnace body 3 is provided with crucible 5, and crucible 5 is hoisted in crucible seat 19 that can lift, and core rod 4 is arranged inside crucible 5, and the upper part of core rod 4 is fixed on the central furnace cover 21 by deflection adjustment device 1. The lower part of the core rod 4 is connected with the core mold 13 . An upper heating device 16 and a lower heating device 15 are arranged on the periphery of the crucible. Heat-resisting brick 7 and thermal insulation sand 6 are laid successively on heating device 15,16 outside. The bottom of crucible 5 is provided with die 12, and die 12 and core die 13 form forming device 11 jointly.

[0032] The liftabl...

Embodiment 2

[0042] When the core mold and the mouth mold of the present application are tungsten alloy, further explanation is made.

[0043] The material of the core mold and the die is a preparation method of tungsten alloy, and the tungsten alloy includes by mass percentage: Cr: 0.24%, Ni: 1.42%, Co: 2.2%, Mo: 0.065%, C 0.004% , lanthanum oxide 1.24%, the balance is tungsten.

[0044] The preparation method of the mandrel and die includes the following steps, step (1): prepare tungsten alloy, weigh ammonium paratungstate and lanthanum by mass percentage, add ammonium paratungstate to the reaction kettle and heat to 115 ° C, then add Lanthanum, continue to heat and stir until it becomes a dry composite powder, and then reduce under the protection of hydrogen at high temperature to obtain rare earth lanthanum-tungsten alloy powder, then add Cr powder, Ni powder, Co powder, Mo powder, and mix under the protection of hydrogen;

[0045] Step (2): Prepare the billet, put the mixed alloy pow...

Embodiment 3

[0049] The material of the core mold and the die is a tungsten alloy, and the tungsten alloy includes by mass percentage: Cr: 0.45%, Ni: 1.33%, Co: 2.26%, Mo: 0.06%, C0.005%, oxidation Ce 1.75%, the balance is tungsten.

[0050] The preparation method of the mandrel and die includes the following steps, step (1): prepare tungsten alloy, weigh ammonium paratungstate and rare earth cerium by mass percentage, add ammonium paratungstate to the reaction kettle and heat to 105 ° C, and then Add rare earth cerium into the mixture, continue heating and stirring until it becomes a dry composite powder, and then reduce under the protection of hydrogen at high temperature to obtain rare earth tungsten alloy powder, then add Cr powder, Ni powder, Co powder, Mo powder, and proceed under the protection of hydrogen mix;

[0051] Step (2): Prepare the billet, put the mixed alloy powder prepared in step (1) into the rubber mold, and then put it into the isostatic press for high-pressure press...

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Abstract

The invention provides a multifunctional electric melting furnace, which comprises a furnace body, a crucible and a forming device, wherein the forming device is composed of a detachable core mold anda die, and is arranged at the bottom of the crucible, the crucible is arranged in the furnace body, a core rod is arranged in the crucible, the lower portion of the core rod is connected with the core mold, and the die is arranged at the bottom of the crucible. According to the multifunctional electric melting furnace, continuously-melted quartz forms different shapes such as tubes, rods, platesand the like through core molds and dies of different shapes, so that the connecting mode is simple, replacement is convenient, and the mold is adjusted according to product requirements; the core mold and the die are made of tungsten, tungsten alloy, molybdenum and molybdenum alloy while the material components and the preparation method are optimized; and by designing reasonable chemical components and proportion and adopting a reasonable preparation process, the manufactured die and the manufactured core mold are good in machining performance.

Description

technical field [0001] The invention relates to an electric melting furnace, in particular to a multifunctional electric melting furnace for producing quartz glass, which belongs to the technical field of quartz glass production. Background technique [0002] In existing continuous melting furnaces for quartz glass production, the position of the crucible in the furnace body is mostly fixed, that is, the positions of the crucible and the surrounding heating devices are relatively fixed. The heating device heats the crucible through heat radiation and heat conduction, so that the quartz sand raw material in the crucible becomes a quartz glass melt, which is then drawn into shape by the forming device at the bottom of the crucible under the traction of the traction device. In order to obtain better product quality, the raw materials in the crucible need to be smelted at high temperature (1800-2400°C), and in the forming area, the temperature of the quartz glass melt needs to b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B5/02C03B15/02C03B15/14C03B20/00C22C27/04C22C1/04B22F5/00
CPCC03B5/02C03B15/02C03B15/14C03B20/00C22C27/04C22C1/045B22F5/007
Inventor 陈士斌刘明伟钱卫刚周明强徐同根许志仁何茂乾陈加田
Owner JIANGSU PACIFIC QUARTZ