CN1011551B - Additive for measuring carbon and sulphur contents in iron and steel - Google Patents
Additive for measuring carbon and sulphur contents in iron and steelInfo
- Publication number
- CN1011551B CN1011551B CN 88106159 CN88106159A CN1011551B CN 1011551 B CN1011551 B CN 1011551B CN 88106159 CN88106159 CN 88106159 CN 88106159 A CN88106159 A CN 88106159A CN 1011551 B CN1011551 B CN 1011551B
- Authority
- CN
- China
- Prior art keywords
- powder
- adjuvant
- steel
- additive
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 16
- 239000010959 steel Substances 0.000 title claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 34
- 239000005864 Sulphur Substances 0.000 title claims description 25
- 229910052742 iron Inorganic materials 0.000 title claims description 15
- 239000000654 additive Substances 0.000 title abstract description 12
- 230000000996 additive effect Effects 0.000 title abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 17
- 239000002671 adjuvant Substances 0.000 claims description 52
- 239000000203 mixture Substances 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 17
- 229910052717 sulfur Inorganic materials 0.000 abstract description 7
- 239000011593 sulfur Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 14
- 238000010891 electric arc Methods 0.000 description 8
- 229910000851 Alloy steel Inorganic materials 0.000 description 6
- 229910000975 Carbon steel Inorganic materials 0.000 description 5
- GJEAMHAFPYZYDE-UHFFFAOYSA-N [C].[S] Chemical compound [C].[S] GJEAMHAFPYZYDE-UHFFFAOYSA-N 0.000 description 5
- 239000010962 carbon steel Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 229910000805 Pig iron Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- -1 as mentioned above Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The present invention relates to an additive used for measuring a carbon and sulfur content om steel, which is a chemical analysis reagent of steel. The present invention is formed by that dried Si powder, M0O3 powder and Sn powder are uniformly mixed after the Si powder, the M0O3 powder and the Sn powder are taken according to a certain proportion, and the service performance and the test effect of the present invention are obviously superior to the existing additive. A test result of the additive is stable and accurate, and test operation is simple and is easy to carry out. The additive has the advantages of wide raw material sources, simple processing technology, innocuity, no taste and high economic benefits, and ordinary factories can organize production.
Description
The invention belongs to the iron and steel chemical analysis reagent, specifically a kind of adjuvant that is used for measuring the iron and steel carbon and sulphur contents.
At present, the adjuvant that is used for measuring the iron and steel carbon and sulphur contents has S usually
n, CuO, MoO
3, SiO
2, W and V
2O
5Deng (referring to State Standard of the People's Republic of China GB223.1～GB223.2-81 " iron and steel and alloy analytical approach ").Heating furnace commonly used has tubular furnace, coreless induction furnace and electric arc furnaces.Facts have proved, these adjuvants that use exist many problems now, mainly containing: 1.. existing adjuvant is instability owing to make carbon sulphur conversion ratio lower (particularly the mensuration conversion ratio to sulphur is lower) in the tested sample, and carbon and sulfur blank value is big, so the test data error is bigger.To the mensuration of sulfur content in the alloy steel, be difficult to draw result accurately.2.. existing adjuvant can not be general to scales that sample is proofreaied and correct surely such as the pig iron, alloy steel, carbon steel, must adjust at any time, and this certainly will increase the difficulty and the workload of test operation.3.. existing adjuvant is generally made about 20 samples and just must be cleared up a dust, otherwise will obviously influence measurement result because Dust Capacity is big, and this has also brought trouble to test operation.4.. existing adjuvant thermal value is less, when sample weight restrains less than 1, must add F
ePowder just can reach temperature requirement, and oxygen utilization is bigger.5.. existing adjuvant is owing to poorly conductive, striking separately.As seen, these shortcomings of existing adjuvant have reduced its usability and test effect widely.
The invention provides a kind of compound additive that is used for measuring the iron and steel carbon and sulphur contents, thereby solved above-mentioned these problems that existing adjuvant exists effectively, make test result stable and accurate, make test operation easy and easy to be capable.
Main points of the present invention are, select dry Si powder, MoO for use
3Powder and S
nPowder mixes after taking by weighing according to a certain percentage.In the adjuvant, the ratio of the parts by weight of three kinds of compositions can be controlled in Si powder: MoO
3Powder: S
nPowder=(15-40): (8-30): (30-75).The ratio of its optimum weight umber is Si powder: MoO
3Powder: S
nPowder=30: 15: 55.Wherein the granularity of Si powder should be the 80-120 order.
The present invention compares with existing adjuvant, and it is big to have thermal value, the conversion ratio height of sulphur, and blank value is little, and good conductivity is proofreaied and correct advantages such as scale is general.Why this adjuvant has these advantages, and the composition and the proportioning thereof of this and it have direct relation.The content of Si powder is higher in this adjuvant, facts have proved, the thermal value of Si powder burning is than the F of same weight
eIt is big more than four times that powder is wanted, and the oxygen utilization of calorimetric such as emit, and the Si powder only is F
e2/3rds of powder.Therefore, this adjuvant thermal value is big, and oxygen utilization is little.The conversion ratio of sulphur depends primarily on temperature of reaction, and the adjuvant thermal value is big, and temperature of reaction is just high, and the conversion ratio of sulphur is also just high.Because the conversion ratio of sulphur has improved, so can both be general to scales that sample is proofreaied and correct surely such as the pig iron, alloy steel, carbon steel.Si powder and S that adjuvant is selected
nPowder is carbon containing sulphur not generally, MoO
3Though in may contain Determination of Trace Sulfur, this adjuvant MoO
3The powder consumption is less, thereby carbon and sulfur blank value little (can ignore).And existing adjuvant is the deficiency of compensation heat when the carbon sulphur of measuring with electric arc furnaces in the iron and steel, needs non-quantitative ground to add straight iron powder usually.Contain carbon sulphur in the pure iron, thereby the blank of carbon sulphur is difficult to deduction in test, particularly must be forbidden for the mensuration of low carbon and sulphur contents sample.This shows that owing to conversion ratio high stablize of this adjuvant to carbon sulphur, and blank value is little, thereby the test data error is very little, all can satisfy the error requirements of GB regulation.MoO in this adjuvant
3Powder has special beating action in electric arc furnaces heating survey sulphur process.Sulphur in the iron and steel is to contact with oxygen on the surface of fusion sample to generate SO
2, measure requirement fast, even to calculate second, sulphur then needs the regular hour from iron and steel liquation internal divergence to the surface.Obviously, improve the rate of propagation that temperature of reaction will help strengthening sulphur, beneficial to the mensuration of sulphur, as mentioned above, Si powder wherein will be made contributions to this.And MoO wherein
3Powder will have another special role, MoO
3Its fusing point is 795 ℃, and boiling point is 1155 ℃, and is easy to distillation.When high temperature, MoO
3By the solid-state gaseous state that becomes, surplus its volume will increase by 3000 times, the MoO of gas
3To cause that liquation acutely seethes when from the sample of fusion, overflowing, play good beating action, improve the rate of propagation of sulphur in liquation, promote SO
2Generation, be beneficial to mensuration to sulphur.In process of the test, dust mainly comes from MoO
3, secondly be Fe
2O
3And S
nO
2MoO in this adjuvant
3Consumption is less, does not add straight iron powder again, and simultaneously, this adjuvant contains more Si powder burning and generates SiO
2, it can form FeOSiO
2Compound can reduce Fe
2O
3Dust Capacity.So this adjuvant 50～60 samples of chemical examination does not continuously need to clear up dust, and does not influence test result.S in this adjuvant
nPowder has the good effect of fluxing, S
nFusing point be 231.8 ℃, can reduce the fusing point of sample.As everyone knows, S
nBe the favorable conductive body, Si belongs to semiconductor, MoO
3It is good conductor of electricity not.And in this adjuvant with Si powder and S
nPowder is a main body, so the three still has good electrical conductivity after mixing, and striking separately.
This adjuvant also has good economic benefit except that having above-mentioned advantage.This adjuvant is compared with existing adjuvant, and its consumption is little, whenever makees a sample list and just can save 5.10 fens with regard to the cost of adjuvant.Because this adjuvant is used for electric arc furnaces good test effect is arranged, thereby be usually used in tubular furnace with existing adjuvant and compare, calculate by doing 100 tests every day, and 8000 degree can economize on electricity every year.So the invention of this adjuvant is to electric arc furnaces applying and will play an important role in the carbon and sulphur contents test in measuring iron and steel.
This adjuvant is mainly used in electric arc furnaces, and the stove of other type is also had positive effect, and its performance all is better than existing adjuvant.
Be specific embodiments of the invention below.
This adjuvant is selected for use, 30 parts in dry Si powder (waste material by monocrystalline silicon is made, and granularity is the 80-120 order), MoO
315 parts in powder and S
n55 parts in powder (referring to that the three respectively accounts for the umber of general assembly (TW)) mixes and forms.Adjuvant should guard against damp, and makes moist as finding, the oven dry back is used and do not influenced its performance.The per kilogram adjuvant can be made 2500～3000 samples, and additive amount is relevant with sample weight, usually by being advisable about about 1 gram of sample size doping amount.For example, when sample size was 0.20～0.25 gram, additive capacity can be about 0.50 gram; When sample size was 0.50 gram, additive capacity can be about 0.40 gram; When sample size was 1 gram, additive capacity can be about 0.30 gram; For the sample of the less utmost point infusibility of weighing, adjuvant can take the circumstances into consideration to add, but generally is no more than 0.70 gram.General first doping during use, after add sample, but if also no significant difference of back doping.This adjuvant once adds and gets final product.
Use adjuvant of the present invention, adopt the High-Speed Automatic ignition furnace of HB-2H (electric arc furnaces) to add carbon and sulphur contents in the heat determination iron and steel, use the carbon steel drift slide, for containing low-sulfur (as sulfur-bearing 0.005%) and high-carbon (as carbon containing 6%) sample can both obtain result accurately.For cast iron, ferroalloy, infusibility samples such as rich chromium cast iron, alloy steel also all can realize satisfactory results, and reach the error requirements of GB regulation.
Use adjuvant of the present invention, adopt GR-02 type high frequency furnace to add the heat determination pig iron, the carbon and sulphur contents in the samples such as carbon steel and alloy steel is reference standard (100%) with adjuvant of the present invention, with existing adjuvant (V
2O
5Add F
ePowder is mixed with 3+1) carry out the conversion ratio contrast of sulphur, existing adjuvant is about 84.2% to the conversion ratio of carbon steel, and the conversion ratio of the pig iron is had only 66.8%, and the conversion ratio of alloy steel is only had 36.8%.
The present invention is applicable to electric arc furnaces, and coreless induction furnace and tubular furnace heating are to the mensuration of carbon and sulphur contents in the iron and steel.Through over thousands of evidence, its usability and test effect all significantly are better than existing adjuvant.This additive raw material source is wide, and cost is low, and processing technology is simple, and is nonpoisonous and tasteless, and general factory all can organize production.
Claims (3)
1, a kind of adjuvant that is used for measuring the iron and steel carbon and sulphur contents is characterized in that, this adjuvant is selected dry Si powder (granularity is the 80-120 order), M for use
0O
3Powder and S
nPowder mixes and forms.
2, by the described adjuvant of claim 1, it is characterized in that the ratio of the parts by weight of three kinds of compositions is Si powder: MoO in this adjuvant
3Powder: S
nPowder=(15-40): (8-30): (30-75).
3, by claim 1 or 2 described adjuvants, it is characterized in that the ratio of the optimum weight umber of three kinds of compositions is Si powder: MoO in this adjuvant
3Powder: S
nPowder=30: 15: 55.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106159 CN1011551B (en) | 1988-08-17 | 1988-08-17 | Additive for measuring carbon and sulphur contents in iron and steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106159 CN1011551B (en) | 1988-08-17 | 1988-08-17 | Additive for measuring carbon and sulphur contents in iron and steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1032981A CN1032981A (en) | 1989-05-17 |
| CN1011551B true CN1011551B (en) | 1991-02-06 |
Family
ID=4834115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88106159 Expired CN1011551B (en) | 1988-08-17 | 1988-08-17 | Additive for measuring carbon and sulphur contents in iron and steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011551B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0715265A2 (en) * | 2006-09-29 | 2013-03-26 | Anant Kashinath Kakatkar | APPLIANCE FOR DETERMINING THE PERCENTAGE OF CARBON AND SILICON EQUIVALENT IN LIQUID FERROUS METAL |
-
1988
- 1988-08-17 CN CN 88106159 patent/CN1011551B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1032981A (en) | 1989-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| C10 | Entry into substantive examination | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |