CN106244902A - A kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron - Google Patents
A kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron Download PDFInfo
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- CN106244902A CN106244902A CN201610708375.2A CN201610708375A CN106244902A CN 106244902 A CN106244902 A CN 106244902A CN 201610708375 A CN201610708375 A CN 201610708375A CN 106244902 A CN106244902 A CN 106244902A
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- iron
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
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- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron, first choose surface and totally clean, the raw material that the unclean thing such as non-corroding, field trash exists；Then iron and steel is carried out composition detection, choosing the qualified iron and steel of C, P, S content is major ingredient, ferrosilicon, ferromanganese, ferrochrome and molybdenum-iron is added again by certain weight ratio, send in smelting furnace and carry out intensification melting, sampling carries out chemical composition analysis, and the percentage by weight of each composition is finely tuned to control by line feeding, when temperature raises further, carry out precipitation desoxydation and final deoxidizing successively；Finally the molten steel after deoxidation is cooled down, in being then sprinkled into collection slag agent in smelting furnace and scratching clean stove after slag, add ferro-boron, ferrotianium and the vanadium iron toasted by certain weight ratio, come out of the stove after final deoxidizing after continuing melting.Present invention process is simple to operate, and energy loss is little, and production efficiency is high, is suitable in smelting technology field large-scale promotion.
Description
Technical field
The present invention relates to smelting technology field, be specifically related to a kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron.
Background technology
Melting, is that metal material and other auxiliary material are put into heating furnace and dissolved and quenched, and furnace charge is at high temperature (1300-
1600K) in stove there is certain physics, chemical change, output crude metal or metal enrichment thing and the pyrometallurgy of slag in material
Process.Furnace charge, in addition to concentrate, calcining, sintering deposit etc., the most also needs to be added to make furnace charge to be prone to melted flux, and for carrying out
Certain reacts and adds reducing agent.Additionally, for providing necessary temperature, often need to add fuel combustion, and send into air or richness
Oxygen air.Crude metal or metal enrichment thing are that two-layer is separated due to the least with molten slag mutual solubility of density differential.
Enriched substance has sulfonium, speiss etc., and they need process through blowing or additive method just can obtain metal.
Intermediate frequency furnace utilizes intermediate frequency power supply to set up intermediate frequency magnetic field, makes Ferromagnetic Material produce inductive loop and generate heat,
Reach the purpose of heating material.Intermediate-frequency heating furnace uses 200-2500Hz intermediate frequency power supply to carry out sensing heating, and melting is incubated, intermediate frequency
Electric furnace is mainly used in melting carbon steel, steel alloy, and special steel is it can also be used to copper, the melting of the non-ferrous metals such as aluminum and temperature raising. equipment body
Long-pending little, lightweight, efficiency is high, little power consumption, melts quick heating, and furnace temperature is easy to control, and production efficiency is high.
By intermediate frequency furnace Castiron Melting process, the character of final metal material is affected particularly critical, in fusion process
The addition of different flux, the difference of melting condition all can affect the character of product, currently available technology Castiron Melting process procedures
Complexity, energy loss is big, and cost is high, and quality of finished has much room for improvement, it is contemplated that invent a kind of novel Castiron Melting technique,
Making produced product quality more preferable, production cost is lower.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron, there is operation
Simply, energy loss is little, with low cost, the advantage that quality of finished is high.
For realizing object above, the present invention is achieved by the following technical programs:
The invention provides a kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron, comprise the following steps:
(1) first choose surface totally to clean, the raw material that the unclean thing such as non-corroding, field trash exists；
(2) iron and steel being carried out composition detection, choosing the qualified iron and steel of C, P, S content is major ingredient, then by certain weight ratio
Add ferrosilicon, ferromanganese, ferrochrome and molybdenum-iron, send in smelting furnace and carry out intensification melting, when molten iron temperature reaches 1450-1480 DEG C
Time, sampling carries out chemical composition analysis, and finely tunes to control the percentage by weight of each composition by line feeding, when temperature reaches
When 1520-1540 DEG C, carry out precipitation desoxydation and final deoxidizing successively；
(3), after the molten iron after the deoxidation in step (2) being cooled to 1420-1450 DEG C, electric induction furnace is adjusted to keeping warm mode,
Molten iron stands 10-15 minute and forms base iron, controls oxygen and the 30ppm of hydrogen total content with gas analyser；
(4) casting: molten iron in step (3) is poured into mould cavity, sets cast temperature as 1380-1410 DEG C, casting time
For 1-2min.Preferably, the described block that raw material is 10 × 10 × 3cm in step (1).
Preferably, the described ferrosilicon in step (2), ferromanganese, ferrochrome, the weight ratio of molybdenum-iron are 5:4:3:1.
Preferably, in described step (2), line feeding trim process is to be injected with the speed of 0.5-0.7m/s by alloy core wire
Molten steel depths.
Preferably, the deoxidizer that in described step (2), precipitation desoxydation is added is Si-Al-Ba-Ca ferrum, silico-calcium core-spun yarn,
Aluminum steel, aluminum ferromanganese, steel-core-aluminium, carbide, the one of carborundum.
Preferably, in described step (3), the weight ratio of ferro-boron, ferrotianium and vanadium iron is 4:2:1.
The method have the benefit that
Smelting technology of the present invention is by the screening of flux and carrying out scientific and reasonable proportioning to raw material components so that institute
It is high that the Abrasion Resistant High Chromium Cast Iron material produced has quality, and the advantage of life-span length carries out desulfurization, nodularization by feeding wire machine and breeds
Process can eliminate the interference of anthropic factor, thus good from existing property, and the residual impurity content of the molten iron being processed can be made to keep
In the least fluctuation range of the same order of magnitude, so that constant product quality.Present invention process is simple to operate, and science is closed
Reason, production efficiency is high, is suitable in Abrasion Resistant High Chromium Cast Iron smelting technology field large-scale promotion.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the enforcement of the present invention
Example, is clearly and completely described the technical scheme in the embodiment of the present invention.Based on the embodiment in the present invention, this area
The every other embodiment that those of ordinary skill is obtained under not making creative work premise, broadly falls into present invention protection
Scope.
Embodiment 1:
A kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron, comprises the following steps:
1) first choose surface totally to clean, the block of shape 10 × 10 × 3cm that the unclean thing such as non-corroding, field trash exists
Shape thing raw material；
(2) first iron and steel being carried out composition detection, choosing the qualified iron and steel of C, P, S content is major ingredient, then ratio by weight
Add ferrosilicon, ferromanganese, ferrochrome and molybdenum-iron for 5:4:3:1, send in smelting furnace and carry out intensification melting, when molten iron temperature reaches
When 1450 DEG C, sampling carries out chemical composition analysis, and is finely tuned by line feeding, and with the speed of 0.5m/s, alloy core wire is injected molten steel
Depths, to control the percentage by weight of each composition, when temperature reaches 1520 DEG C, is sequentially added into deoxidizer Si-Al-Ba-Ca ferrum and carries out
Precipitation desoxydation and final deoxidizing；
(3), after the molten iron after the deoxidation in step (2) being cooled to 1420-1450 DEG C, electric induction furnace is adjusted to keeping warm mode,
Molten iron stands 10-15 minute and forms base iron, controls oxygen and the 30ppm of hydrogen total content with gas analyser；
(4) casting: molten iron in step (3) is poured into mould cavity, sets cast temperature as 1400 DEG C, and casting time is
2min。
Embodiment 2:
A kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron, comprises the following steps:
1) first choose surface totally to clean, the block of shape 10 × 10 × 3cm that the unclean thing such as non-corroding, field trash exists
Shape thing raw material；
(2) first iron and steel being carried out composition detection, choosing the qualified iron and steel of C, P, S content is major ingredient, then ratio by weight
Add ferrosilicon, ferromanganese, ferrochrome and molybdenum-iron for 5:4:3:1, send in smelting furnace and carry out intensification melting, when molten iron temperature reaches
When 1480 DEG C, sampling carries out chemical composition analysis, and is finely tuned by line feeding, and with the speed of 0.7m/s, alloy core wire is injected molten steel
Depths, to control the percentage by weight of each composition, when temperature reaches 1540 DEG C, is sequentially added into deoxidizer silico-calcium core-spun yarn and carries out
Precipitation desoxydation and final deoxidizing；
(3), after the molten iron after the deoxidation in step (2) being cooled to 1420-1450 DEG C, electric induction furnace is adjusted to keeping warm mode,
Molten iron stands 10-15 minute and forms base iron, controls oxygen and the 30ppm of hydrogen total content with gas analyser；
(4) casting: molten iron in step (3) is poured into mould cavity, sets cast temperature as 1400 DEG C, and casting time is
2min。
Embodiment 3:
A kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron, comprises the following steps:
1) first choose surface totally to clean, the block of shape 10 × 10 × 3cm that the unclean thing such as non-corroding, field trash exists
Shape thing raw material；
(2) first iron and steel being carried out composition detection, choosing the qualified iron and steel of C, P, S content is major ingredient, then ratio by weight
Add ferrosilicon, ferromanganese, ferrochrome and molybdenum-iron for 5:4:3:1, send in smelting furnace and carry out intensification melting, when molten iron temperature reaches
When 1450-1480 DEG C, sampling carries out chemical composition analysis, and is finely tuned by line feeding, by alloy core wire with the speed of 0.5-0.7m/s
Degree injects molten steel depths, to control the percentage by weight of each composition, when temperature reaches 1520-1540 DEG C, is sequentially added into deoxidation
Agent aluminum steel carries out precipitation desoxydation and final deoxidizing；
(3), after the molten iron after the deoxidation in step (2) being cooled to 1420-1450 DEG C, electric induction furnace is adjusted to keeping warm mode,
Molten iron stands 10-15 minute and forms base iron, controls oxygen and the 30ppm of hydrogen total content with gas analyser；
(4) casting: molten iron in step (3) is poured into mould cavity, sets cast temperature as 1390 DEG C, and casting time is
1min。
Embodiment 4:
A kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron, comprises the following steps:
1) first choose surface totally to clean, the block of shape 10 × 10 × 3cm that the unclean thing such as non-corroding, field trash exists
Shape thing raw material；
(2) first iron and steel being carried out composition detection, choosing the qualified iron and steel of C, P, S content is major ingredient, then ratio by weight
Add ferrosilicon, ferromanganese, ferrochrome and molybdenum-iron for 5:4:3:1, send in smelting furnace and carry out intensification melting, when molten iron temperature reaches
When 1460 DEG C, sampling carries out chemical composition analysis, and is finely tuned by line feeding, and with the speed of 0.6m/s, alloy core wire is injected molten steel
Depths, to control the percentage by weight of each composition, when temperature reaches 1520 DEG C, is sequentially added into deoxidizer aluminum ferromanganese and precipitates
Deoxidation and final deoxidizing；
(3), after the molten iron after the deoxidation in step (2) being cooled to 1420-1450 DEG C, electric induction furnace is adjusted to keeping warm mode,
Molten iron stands 10-15 minute and forms base iron, controls oxygen and the 30ppm of hydrogen total content with gas analyser；
(4) casting: molten iron in step (3) is poured into mould cavity, sets cast temperature as 1410 DEG C, and casting time is
1min。
Embodiment 5:
A kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron, comprises the following steps:
1) first choose surface totally to clean, the block of shape 10 × 10 × 3cm that the unclean thing such as non-corroding, field trash exists
Shape thing raw material；
(2) first iron and steel being carried out composition detection, choosing the qualified iron and steel of C, P, S content is major ingredient, then ratio by weight
Add ferrosilicon, ferromanganese, ferrochrome and molybdenum-iron for 5:4:3:1, send in smelting furnace and carry out intensification melting, when molten iron temperature reaches
When 1480 DEG C, sampling carries out chemical composition analysis, and is finely tuned by line feeding, and with the speed of 0.7m/s, alloy core wire is injected molten steel
Depths, to control the percentage by weight of each composition, when temperature reaches 1540 DEG C, is sequentially added into deoxidizer steel-core-aluminium and precipitates
Deoxidation and final deoxidizing；
(3), after the molten iron after the deoxidation in step (2) being cooled to 1420-1450 DEG C, electric induction furnace is adjusted to keeping warm mode,
Molten iron stands 10-15 minute and forms base iron, controls oxygen and the 30ppm of hydrogen total content with gas analyser；
(4) casting: molten iron in step (3) is poured into mould cavity, sets cast temperature as 1380 DEG C, and casting time is
1min。
Embodiment 6:
A kind of energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron, comprises the following steps:
1) first choose surface totally to clean, the block of shape 10 × 10 × 3cm that the unclean thing such as non-corroding, field trash exists
Shape thing raw material；
(2) first iron and steel being carried out composition detection, choosing the qualified iron and steel of C, P, S content is major ingredient, then ratio by weight
Add ferrosilicon, ferromanganese, ferrochrome and molybdenum-iron for 5:4:3:1, send in smelting furnace and carry out intensification melting, when molten iron temperature reaches
When 1480 DEG C, sampling carries out chemical composition analysis, and is finely tuned by line feeding, and with the speed of 0.7m/s, alloy core wire is injected molten steel
Depths, to control the percentage by weight of each composition, when temperature reaches 1540 DEG C, be sequentially added into deoxidizer carry out precipitation desoxydation and
Final deoxidizing；Si-Al-Ba-Ca ferrum, silico-calcium core-spun yarn, aluminum steel, aluminum ferromanganese, steel-core-aluminium, carbide, carborundum
(3), after the molten iron after the deoxidation in step (2) being cooled to 1420-1450 DEG C, electric induction furnace is adjusted to keeping warm mode,
Molten iron stands 10-15 minute and forms base iron, controls oxygen and the 30ppm of hydrogen total content with gas analyser；
(4) casting: molten iron in step (3) is poured into mould cavity, sets cast temperature as 1380 DEG C, and casting time is
1min。
Above example only in order to technical scheme to be described, is not intended to limit；Although with reference to previous embodiment
The present invention is described in detail, it will be understood by those within the art that: it still can be to aforementioned each enforcement
Technical scheme described in example is modified, or wherein portion of techniques feature is carried out equivalent；And these amendment or
Replace, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. the energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron, it is characterised in that comprise the following steps:
(1) first choose surface totally to clean, the raw material that the unclean thing such as non-corroding, field trash exists；
(2) iron and steel being carried out composition detection, choosing the qualified iron and steel of C, P, S content is major ingredient, then adds by certain weight ratio
Ferrosilicon, ferromanganese, ferrochrome and molybdenum-iron, send in smelting furnace and carry out intensification melting, when molten iron temperature reaches 1450-1480 DEG C,
Sampling carries out chemical composition analysis, and finely tunes to control the percentage by weight of each composition by line feeding, when temperature reaches 1520-
When 1540 DEG C, carry out precipitation desoxydation and final deoxidizing successively；
(3), after the molten iron after the deoxidation in step (2) being cooled to 1420-1450 DEG C, electric induction furnace is adjusted to keeping warm mode, molten iron
Stand 10-15 minute and form base iron, control oxygen and the 30ppm of hydrogen total content with gas analyser；
(4) casting: molten iron in step (3) is poured into mould cavity, sets cast temperature as 1380-1410 DEG C, and casting time is 1-
2min。
2. the energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron as claimed in claim 1, it is characterised in that in described step (1)
Raw material is the block of 10 × 10 × 3cm.
3. the energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron as claimed in claim 1, it is characterised in that in described step (2)
Ferrosilicon, ferromanganese, ferrochrome, the weight ratio of molybdenum-iron are 5:4:3:1.
4. the energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron as claimed in claim 1, it is characterised in that feed in described step (2)
Line trim process is that with the speed of 0.5-0.7m/s, alloy core wire is injected molten steel depths.
5. the energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron as claimed in claim 1, it is characterised in that heavy in described step (2)
The deoxidizer that shallow lake deoxidation is added is Si-Al-Ba-Ca ferrum, silico-calcium core-spun yarn, aluminum steel, aluminum ferromanganese, steel-core-aluminium, carbide, carborundum
A kind of.
6. the energy-conservation smelting technology of Abrasion Resistant High Chromium Cast Iron as claimed in claim 1, it is characterised in that boron in described step (3)
The weight ratio of ferrum, ferrotianium and vanadium iron is 4:2:1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557654A (en) * | 2017-08-14 | 2018-01-09 | 宁国市华丰耐磨材料有限公司 | A kind of boron-containing high-chromium cast-iron grinding ball preparation method through nanometer Metamorphism treatment |
| CN109777908A (en) * | 2019-02-26 | 2019-05-21 | 河北华北柴油机有限责任公司 | Chemical component method of adjustment before electrosmelting of intermediate frequency cast-iron stove |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557654A (en) * | 2017-08-14 | 2018-01-09 | 宁国市华丰耐磨材料有限公司 | A kind of boron-containing high-chromium cast-iron grinding ball preparation method through nanometer Metamorphism treatment |
| CN109777908A (en) * | 2019-02-26 | 2019-05-21 | 河北华北柴油机有限责任公司 | Chemical component method of adjustment before electrosmelting of intermediate frequency cast-iron stove |
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