CN1116429C - Nodulizer for cored wire - Google Patents
Nodulizer for cored wire Download PDFInfo
- Publication number
- CN1116429C CN1116429C CN00115947A CN00115947A CN1116429C CN 1116429 C CN1116429 C CN 1116429C CN 00115947 A CN00115947 A CN 00115947A CN 00115947 A CN00115947 A CN 00115947A CN 1116429 C CN1116429 C CN 1116429C
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- nodulizer
- magnesium
- nodulizing
- alloy
- cored wire
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The present invention relates to an alloy material, namely a nodulizer for cored wire, used for the nodulizing treatment during the production process of nodular graphite cast iron. A magnesium ingots, a silicon calcium alloy, a silicon barium alloy, a rare earth ferrosilicon alloy and 75 ferric silicon are used as raw materials, and the nodulizer comprises the following components: 15 to 28% of magnesium, 0 to 10% of calcium, 0 to 10% of barium, 5 to 20% of rare earth, 30 to 80% of silicon,the balance of ferrum. The raw materials are pulverized smaller than 5mm to prepare the cored wire after being smelted by a method identical to the conventional crushing method of the nodulizer. The nodulizer of the present invention has the advantages of low cost, smooth nodulizing reaction, stable nodulizing quality, high magnesium absorption rate, nucleation inoculation and small environmental pollution of light, smoke, etc.
Description
The present invention relates to a kind of iron alloy product, it belongs to the used alloy material of spheroidizing in the spheroidal graphite cast iron production process.
In the production process of spheroidal graphite cast iron, spheroidizing is a requisite link.In the prior art, generally adopt rare earth magnesium ferrosilicon alloy to pour method in China's spheroidizing and handle.Though its process is easy, the specific absorption of magnesium is not high, particularly causes nodularization quality instability because of the nodularization process is difficult to control, and produces serious environment pollutions such as intensive magnesium light, smog in the spheroidizing process.The cored-wire wire-feeding technique is a kind of simple and effective method of adding various alloys or additive in metal melt, is a kind of important external refining means in the Iron And Steel Industry.In recent years some casting expert attempts this technology introducing foundry industry as the new tool that adds magnesium or contain magnesium alloy in molten iron.The result of test shows: have that nodularization steady quality, nodularization process are controlled easily, environmental pollution reduces and many advantages such as spheroidizing cost reduction with cored-wire cored wire injection nodulizing processing.Because the cored wire injection nodulizing treatment technology is in the starting stage in China, the nodulizing agent that cored wire injection nodulizing plays an important role in handling fails to obtain due attention, and not seeing has the special-purpose nodulizing agent of developing at the characteristics of cored wire injection nodulizing.It is lower that the nodulizing agent that is used to the method that pours contains magnesium, though it is used for cored wire injection nodulizing reacting balance, magnesium absorption rate height, the cored wire injection nodulizing cost is too high; Join the nodulizing agent that a certain amount of ferrosilicon or silico-calcium are handled as line feeding with pure magnesium line or pure magnesium powder, though the cost problem is solved, spheroidizing reacion is still too fierce, and splashing of magnesium light, molten iron is difficult to avoid.The ideal line feeding should guarantee that the cored wire injection nodulizing total cost has under the prerequisite of certain advantage, makes spheroidizing reacion steady, thereby makes specific absorption height, light and the cigarette etc. of nodularization steady quality, magnesium little to the pollution of environment with nodulizing agent.
The objective of the invention is at the deficiencies in the prior art and problem, provide a kind of adapt to the cored wire injection nodulizing processing feature and have that cost is low, spheroidizing reacion steadily, the specific absorption height of nodularization steady quality, magnesium, have forming core inoculation(effect), light and cigarette etc. that the little cored wire injection nodulizing of the pollution of environment is handled special-purpose nodulizing agent.
The composition of the said nodulizer for cored wire of the present invention is: magnesium 15～28%, and calcium 10%, barium 10%, rare earth 5～20%, silicon 30～80%, all the other are iron.
With magnesium ingot, silicocalcium, Si-Ba alloy, rare earth ferrosilicon alloy, 75 ferrosilicon etc. is raw material, determines proportioning raw materials by above-mentioned element ratio, smelts by pouring the identical method of method nodulizing agent with routine.Below Mechanical Crushing to 5 millimeter, be used to make cored-wire.
The said nodulizer for cored wire of the present invention adopts the alloy form through smelting, because the magnesium in the nodulizing agent exists with the Mg2Si form, make gasification, burning, the reactivity of magnesium compare and to reduce greatly with pure magnesium, when spheroidizing with use identical Mg content, but magnesium is compared with the nodulizing agent that element state exists, its spheroidizing reacion is more steady, and and then the specific absorption of magnesium is improved.
The said nodulizing agent of the present invention has been owing to adopted rational Mg content, both guaranteed that the cost that cored wire injection nodulizing handles was unlikely too high, make again nodulizing agent can be under normal condition routinely technology smelt.The overgenerous magnesium light of unlikely generation, smog and molten iron splashed when reasonably Mg content had also guaranteed spheroidizing.
The element proportioning of the said nodulizer for cored wire of the present invention can guarantee that nodulizing agent has nodularization effect preferably, anti-ageing effect, anti-interference effect and the pregnant effect of moving back.
That below provide is an embodiment: with magnesium ingot, rare earth ferrosilicon, 75 ferrosilicon is raw material, presses magnesium 20%, rare earth 9%, calcium 10%, barium 10%, determines the ratio of magnesium ingot and rare earth ferrosilicon, the not enough benefit with 75 ferrosilicon, and the scaling loss of adequate compensation magnesium when melting.The nodulizing agent melting technology is smelted routinely in 150 kilograms of medium-frequency induction furnaces.Nodulizing agent is used to make cored-wire below Mechanical Crushing to 5 millimeter.
The present invention also can be at the characteristic of base iron, as what of the height of sulfur content, interference element, is that cupola furnace molten iron or electric furnace molten iron etc. are adjusted in the mentioned component scope the nodulizing agent composition, makes the special-purpose nodulizing agent at specific working condition.
Claims (1)
1. a nodulizer for cored wire is characterized in that, said nodulizing agent is to be raw material with magnesium ingot, silicocalcium, Si-Ba alloy, rare earth ferrosilicon alloy, 75 ferrosilicon, its each component content is: magnesium 15～28%, calcium 10%, barium 10%, rare earth 5～20%, silicon 30～80%, all the other are iron; And a kind of iron alloy that after smelting, obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00115947A CN1116429C (en) | 2000-08-08 | 2000-08-08 | Nodulizer for cored wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00115947A CN1116429C (en) | 2000-08-08 | 2000-08-08 | Nodulizer for cored wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1291659A CN1291659A (en) | 2001-04-18 |
| CN1116429C true CN1116429C (en) | 2003-07-30 |
Family
ID=4585387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00115947A Expired - Fee Related CN1116429C (en) | 2000-08-08 | 2000-08-08 | Nodulizer for cored wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1116429C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580913B (en) * | 2009-04-02 | 2011-03-16 | 天津市立鑫晟精细铸造有限公司 | High-chromium cast iron composite inoculant, preparation method and application thereof |
| CN101619410B (en) * | 2009-07-29 | 2012-05-30 | 天津万石科技发展有限公司 | Nanocrystalline high-chromium cast-iron composite nucleating agent for engineering machinery as well as preparation method and application method thereof |
| CN101962704B (en) * | 2010-10-25 | 2012-05-02 | 中钢集团吉林铁合金股份有限公司 | Method for producing low-phosphorous low-sulfur micro carbon and low-carbon manganese silicon alloy by adopting specific core powder formula feeding wire |
| CN102560227A (en) * | 2010-12-23 | 2012-07-11 | 龙南龙钇重稀土科技股份有限公司 | Method for producing low-silicon spheroidizing agent by adopting melting distributing and punching composite method |
| CN102652967A (en) * | 2012-03-09 | 2012-09-05 | 山西银光华盛镁业股份有限公司 | Method for manufacturing high-magnesium-alloy solid cored wire |
| CN106086302A (en) * | 2016-07-28 | 2016-11-09 | 上海大学 | Magnesium calcium rare earth alloy core-spun yarn of Ferrous Metallurgy and preparation method thereof |
| CN107686873A (en) * | 2017-08-31 | 2018-02-13 | 哈尔滨科德威冶金股份有限公司 | Filling composition is not segregated core-spun yarn to a variety of different densities powder on-line mixings in high precision |
| CN113846205A (en) * | 2021-10-10 | 2021-12-28 | 济南市酉金工贸有限公司 | Spheroidized filament and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084579A (en) * | 1992-09-22 | 1994-03-30 | 陈�光 | Polycompound nodulizer for nodular cast iron |
-
2000
- 2000-08-08 CN CN00115947A patent/CN1116429C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084579A (en) * | 1992-09-22 | 1994-03-30 | 陈�光 | Polycompound nodulizer for nodular cast iron |
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| Publication number | Publication date |
|---|---|
| CN1291659A (en) | 2001-04-18 |
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| CF01 | Termination of patent right due to non-payment of annual fee |