CN103884578B - A kind of method detecting constituent content in alloy raw material - Google Patents
A kind of method detecting constituent content in alloy raw material Download PDFInfo
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- CN103884578B CN103884578B CN201410057493.2A CN201410057493A CN103884578B CN 103884578 B CN103884578 B CN 103884578B CN 201410057493 A CN201410057493 A CN 201410057493A CN 103884578 B CN103884578 B CN 103884578B
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Abstract
The present invention relates to a kind of method <b> detecting constituent content in alloy raw material, its </b> comprises following step successively: <b> I .</b> uses the sampling of multidraw method to the alloy raw material of this batch, and the weight of sampling is less than the capacity of small intermediate frequency induction furnace; The a collection of alloy raw material full-page proof of sampling drops in intermediate frequency furnace by <b> II .</b>, divide two sections of intensification meltings: to 600 ± 10 DEG C, the used time is not more than 15min to leading portion normal temperature (0 DEG C-40 DEG C); Back segment 600 ± 10 DEG C to 1200 ± 20 DEG C, used time 20-30min; <b> III </b><bGreatT.Gre aT.GT.</b> until completely melted, scoop out alloy part melting liquid with sample spoon, pour mould into and make sample blanks; <b> IV </b><bGreatT.Gre aT.GT.</b> spectroscopic methodology or chemical method carry out constituent content analysis to sample blanks.In this detection alloy raw material, the method detection data of constituent content are accurate.
Description
Technical field
The present invention relates to a kind of method detecting constituent content in alloy raw material.
Background technology
Alloy raw material is the material with metallic character by two or more metal and nonmetal synthesis, and be that metallurgy industry produces one of important raw material, general appearance is relatively large shape.Because steel products are continuous prodution, alloy raw materials requirement amount is large, and its unit price is general higher, and therefore alloy raw material is very large at steel industry procurement payment proportion.As can be seen here, the incoming test of alloy raw material just seems very crucial.Common detection method is a kind of is the bulk alloy material selecting surface more smooth, uses spectrographic determination constituent content; Another kind detects with chemical method after institute's sample thief surface grinding.All there is few, the under-represented problem of sampling amount in these two kinds of methods, and Large Steel enterprise alloy raw material list criticizes amount of purchase greatly, and the small metrical error caused less by sampling amount all will cause huge funds difference.Therefore need a kind of easy, method accurately, realize constituent content in alloy raw material and detect more accurately, both fairness was had more to both sides clearing, be also conducive to realizing the accuracy batching that steel mill smelts.
Summary of the invention
In order to overcome the above-mentioned deficiency of the method for constituent content in existing detection alloy raw material, the invention provides and a kind ofly detect the method that data detect constituent content in alloy raw material accurately.
In this detection alloy raw material, the method for constituent content comprises following step successively:
The alloy raw material of I pair of this batch uses the sampling of multidraw method.The weight of sampling is less than the capacity (general capacity is 1 ton) of small intermediate frequency induction furnace;
The a collection of alloy raw material full-page proof of sampling drops in intermediate frequency furnace by II, point two sections of intensification meltings: to 600 ± 10 DEG C, the used time is not more than 15min to leading portion normal temperature (0 DEG C-40 DEG C); Back segment 600 ± 10 DEG C to 1200 ± 20 DEG C, used time 20-30min;
This part time and use cold intermediate frequency furnace or hot intermediate frequency furnace has relation, the first stove time of every day is long, short with regard to the time from the second stove.Front fast rear slow, prevent the sample blanks finally made from occurring pore.Due to sampling amount, comparatively conventional detection method is more, and after melting completely, distributed components, to true reflection this batch, alloy material content representativeness is strong, deviation is little.
III until completely melted, scoops out alloy part melting liquid with sample spoon, pours mould into and make sample blanks (sheet or cylindric).
IV carries out constituent content analysis (sheet sample blanks is suitable for analysis of spectral method, and cylindric sample blanks is applicable to chemical method analysis) with spectroscopic methodology or chemical method to sample blanks.
The method of constituent content in above-mentioned detection alloy raw material, its steps characteristic is: when step I multidraw method samples, the weight of sampling is not less than 90% of intermediate frequency furnace capacity;
The method of constituent content in above-mentioned detection alloy raw material, its steps characteristic is; In step III, pour mould into and make three to five pieces of sample blanks.
In actual use, can accept or reject surveyed element kind according to smelting requirements.
Beneficial effect of the present invention
This method is large for alloy raw material batch, and sampling cannot reflect the situation of real elements content less, and directly use spectroscopic methodology or chemical method to bulk alloy material, the problem that prohibited data detection is true or result is under-represented proposes.This method prepares sample for detecting after using the melting of small intermediate frequency stove, constituent content in effective detection alloy material, detection data are accurate, principal element content and original tape quality certificate deviation are within 1%, for Large Steel enterprise alloy smelting operation accuracy batching provides foundation, meet the needs of the accurate clearing of Large Steel enterprise alloy buying and smelting procedure accurate feed proportioning.
Embodiment
Below in conjunction with embodiment, clear, complete description is carried out to technical scheme of the present invention.Described embodiment is two embodiments of the present invention, instead of limitation of the present invention.Manufacture the method that sample is observed again after what those of ordinary skill in the art obtained under not having creative work prerequisite utilize medium frequency melting, all belong to protection scope of the present invention.
Embodiment one
The present embodiment is a collection of chromium nickel pig iron supplied materials (Ni content the is 8%) Element detection of the development of raw materials purchasing department arrival being applied to applicant in April, 2013.
Detailed process is as follows:
I pair of chromium nickel pig iron multidraw method often criticizing arrival samples by car, a collection of totally 120 tons, the chromium nickel pig iron three car of arrival.Upper, middle and lower grab sample, per car gets 5 points, and per car sampling amount is 300-310kg, forms a full-page proof.
II the alloy raw material of sampling is dropped into capacity is in the intermediate frequency furnace of 1 ton, point two sections of intensification meltings: leading portion normal temperature (30 DEG C) to 600 DEG C, back segment 600 DEG C to 1200 DEG C.The smelting time of leading portion is 15 minutes, and the smelting time of back segment is 30 minutes.
III until completely melted, scoops out alloy melting liquid with sample spoon, pours mould into and make five pieces of diameter 4cm, thickness 1cm disc-shaped sample blanks, every block sample blanks 70-80g.
IV gets wherein one piece of sample blanks, carries out constituent content analysis with spectroscopic methodology to sample blanks, and result display principal element Ni content and original tape quality certificate deviation are within 0.25%.
Embodiment two
The present embodiment is the Element detection of a collection of ferrochrome (Cr content the is 55%) supplied materials of the development of raw materials purchasing department arrival being applied to applicant in April, 2013.
Detailed process is as follows:
I pair of ferrochrome often criticizing arrival samples by car, totally 120 tons, a collection of ferrochrome three car of arrival, upper, middle and lower grab sample, and per car gets 5 points, and per car sampling amount is 300-308kg, forms a full-page proof.
II the alloy raw material of sampling is dropped into capacity is in the intermediate frequency furnace of 1 ton, point two sections of intensification meltings: leading portion normal temperature (30 DEG C) to 600 DEG C, back segment 600 DEG C to 1200 DEG C.The smelting time of leading portion is 10 minutes, and the smelting time of back segment is 20 minutes.
III until completely melted, scoops out alloy melting liquid with sample spoon, pours mould into and make five pieces of cylindric sample blanks.
IV gets wherein one piece of sample blanks, carries out constituent content analysis with chemical method analysis to sample blanks, and result display principal element Cr content and original tape quality certificate deviation are within+1%.
Explanation
Multidraw method described in 1 present specification a: batch of material is 3-5 car, per car 35-40 ton, is bulk, samples by car.Per car gets 5 points at different directions (in all directions), according to upper, middle and lower sampling, gets for often and is no less than 3 pieces of sample blocks, often criticize the full-page proof of composition 300 ± 20kg for often.Before delivering to intermediate frequency furnace by shovel loader after sampling.
Full-page proof described in 2 present specification refers to the block material that multidraw method is taken out.
3 due to principal element content difference comparatively large, therefore the inspection of different-alloy ingredient requirement and original tape quality certificate error precision scope also different.
Claims (7)
1. detect a method for constituent content in alloy raw material, it comprises following step successively:
I pair of alloy raw material often criticizing arrival uses the sampling of multidraw method, and the weight of sampling is less than the capacity of small intermediate frequency induction furnace;
The a collection of alloy raw material full-page proof of sampling drops in intermediate frequency furnace by II, point two sections of intensification meltings: leading portion 0 DEG C-40 DEG C to 600 ± 10 DEG C, and the used time is not more than 15min; Back segment 600 ± 10 DEG C to 1200 ± 20 DEG C, used time 20-30min;
III until completely melted, scoops out alloy part melting liquid, pour mould into and make sample blanks with sample spoon;
IV carries out constituent content analysis with spectroscopic methodology or chemical method to sample blanks.
2. the method for constituent content in detection alloy raw material according to claim 1, its steps characteristic is:
Pour mould in step III and make cylindric sample blanks, analyze sample blanks in step IV chemical method.
3. the method for constituent content in detection alloy raw material according to claim 1, its steps characteristic is:
Pour mould in step III and make sheet sample blanks, in step IV analysis of spectral method sample blanks.
4. the method for constituent content in detection alloy raw material according to claim 1 and 2, its steps characteristic is: when step I multidraw method samples, the weight of sampling is not less than 90% of intermediate frequency furnace capacity.
5. the method for constituent content in detection alloy raw material according to claim 1 and 2, its steps characteristic is; In step III, pour mould into and make three to five pieces of sample blanks.
6. the method for constituent content in detection alloy raw material according to claim 3, its steps characteristic is: when step I multidraw method samples, the weight of sampling is not less than 90% of intermediate frequency furnace capacity.
7. the method for constituent content in detection alloy raw material according to claim 3, its steps characteristic is; In step III, pour mould into and make three to five pieces of sample blanks.
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| JPH07229892A (en) * | 1994-02-16 | 1995-08-29 | Nippon Light Metal Co Ltd | Collection and solidification of sample for emission spectral analysis of hypereutectic al-si alloy |
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| KR20030026385A (en) * | 2001-09-12 | 2003-04-03 | 주식회사 포스코 | Method For Manufacturing Mold Type Ferro Alloy Sample For Quantiative Analysis |
| CN101793637A (en) * | 2009-11-20 | 2010-08-04 | 灵宝市金源矿业有限责任公司 | Test method of alloy gold containing gold and silver and platinum group metal |
| CN102252887A (en) * | 2011-06-15 | 2011-11-23 | 金川集团有限公司 | Sample preparation method of complicated alloy |
| CN102253068A (en) * | 2011-07-12 | 2011-11-23 | 攀钢集团攀枝花钢钒有限公司 | Method for analyzing vanadium iron ingredients by melt smelting sampling-X-ray fluorescence spectrum process |
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