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Electroslag ignition agent and preparation method thereof

A manufacturing method and igniter technology, applied in the field of metallurgy, can solve problems such as titanium nitride inclusions, high manufacturing costs, and cumbersome processes, and achieve the effects of improving high-temperature plasticity, short manufacturing time, and simple manufacturing methods

Inactive Publication Date: 2015-06-24
SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content of titanium in this kind of arc starting agent is relatively high, and titanium nitride inclusions will appear in the production of mold steel and low titanium steel products, and the production process of this kind of arc starting agent needs high temperature melting, cooling and crushing, not only the process is cumbersome , the workload is large, and it will cause pollution and energy waste, and the production cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In the present embodiment, the raw material composition and weight percentage of igniter are,

[0035] Fluorite powder: 35%, silica powder: 12%, graphite electrode powder: 34%, quicklime powder: 1%, new brine: 18%.

[0036] The manufacture method of this ignition agent is:

[0037] (1) Mix dry powder, weigh fluorite powder, silica powder, graphite electrode powder, quicklime powder in proportion according to the weight percentage content of each raw material and the capacity of the mold, and mix them evenly to get a mixed dry powder.

[0038] (2) Fill the mold with mud, add new type of brine to the mixed dry powder, stir until there is no dry powder, hold the mixture in your hand just to form a ball, put the evenly stirred mixture into the mold, and compact it.

[0039] (3) Blowing and demolding, blowing CO into the mold 2 Gas, blowing time is 20 minutes, demoulding after stopping blowing, get igniter block.

[0040] (4) Low-temperature drying, the drying temperature...

Embodiment 2

[0043] In the present embodiment, the raw material composition and weight percentage of igniter are,

[0044] Fluorite powder: 25%, silica powder: 2%, graphite electrode powder: 40%, quicklime powder: 11%, new brine: 22%.

[0045] The manufacture method of this ignition agent is:

[0046] (1) Mix dry powder, weigh fluorite powder, silica powder, graphite electrode powder, quicklime powder in proportion according to the weight percentage content of each raw material and the capacity of the mold, and mix them evenly to get a mixed dry powder.

[0047] (2) Fill the mold with mud, add new type of brine to the mixed dry powder, stir until there is no dry powder, hold the mixture in your hand just to form a ball, put the evenly stirred mixture into the mold, and compact it.

[0048] (3) Blowing and demolding, blowing CO into the mold 2 Gas, blowing time is 30 minutes, demoulding after stopping blowing, get igniter block.

[0049] (4) Low-temperature drying, the drying temperature...

Embodiment 3

[0052] In the present embodiment, the raw material composition and weight percentage of igniter are,

[0053] Fluorite powder: 30%, silica powder: 2%, graphite electrode powder: 40%, quicklime powder: 10%, new brine: 18%.

[0054] The manufacture method of this ignition agent is:

[0055](1) Mix dry powder, weigh fluorite powder, silica powder, graphite electrode powder, quicklime powder in proportion according to the weight percentage content of each raw material and the capacity of the mold, and mix them evenly to get a mixed dry powder.

[0056] (2) Fill the mold with mud, add new type of brine to the mixed dry powder, stir until there is no dry powder, hold the mixture in your hand just to form a ball, put the evenly stirred mixture into the mold, and compact it.

[0057] (3) Blowing and demolding, blowing CO into the mold 2 Gas, blowing time is 27 minutes, demoulding after stopping blowing, obtains igniter block.

[0058] (4) Low-temperature drying, the drying temperat...

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Abstract

The invention discloses an electroslag ignition agent and a preparation method thereof. The electroslag ignition agent is used for igniting and remelting slag material in an electroslag remelting technology to establish electroslag. The ignition agent comprises the following raw material components in percentage by weight: 25-35% of fluorite powder, 2-12% of silica powder, 30-40% of graphite electrode powder, 1-11% of quicklime powder and 18-28% of water glass. The preparation method comprises the following process steps: preparing mixed dry powder: uniformly mixing the raw materials according to the content in percentage by weight of each raw material and the carrying capacity of a mold to obtain the mixed dry powder; mixing with sludge, loading into the mold, adding the water glass into the mixed dry powder, stirring till no dry powder exists, loading a mixture which is uniformly stirred into the mold, tamping and compacting; blowing gas, demolding, blowing CO2 into the mold, and demolding after stopping gas blowing to obtain an ignition agent block; and drying at low temperature. The ignition agent disclosed by the invention has a good arc starting effect in the using process and can avoid a titanium-increasing effect, and high-temperature smelting is not required in the manufacturing process of the ignition agent.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an igniter for igniting remelted slag material to establish electroslag in the process of electroslag remelting technology to purify metals and a manufacturing method thereof. Background technique [0002] Electroslag remelting is a melting method that produces high-grade hot work die steel when an electric current is passed through molten slag. During the melting of the consumable electrode, the formation of metal droplets, and the dripping process, a series of physical and chemical reactions occur between the steel slag, thereby removing non-metallic inclusions and harmful elements in the steel, purifying the metal and obtaining a steel ingot with a clean structure and uniform density . Ignition agent, also known as conductive slag, arc slag, arc ignition agent, is used to ignite heavy slag material to establish electroslag. Since the solid slag cannot conduct electricity,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/18
Inventor 张东泽杨保中
Owner SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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