CN114459951B - Scrap steel detection method - Google Patents
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- CN114459951B CN114459951B CN202210039823.XA CN202210039823A CN114459951B CN 114459951 B CN114459951 B CN 114459951B CN 202210039823 A CN202210039823 A CN 202210039823A CN 114459951 B CN114459951 B CN 114459951B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 134
- 239000010959 steel Substances 0.000 title claims abstract description 134
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 239000002023 wood Substances 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 59
- 239000002699 waste material Substances 0.000 claims abstract description 54
- 238000004458 analytical method Methods 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 15
- 238000007689 inspection Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 32
- 239000010935 stainless steel Substances 0.000 claims description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 11
- 238000012216 screening Methods 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 238000011179 visual inspection Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000005070 sampling Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013527 convolutional neural network Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
- G01N2009/022—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids
- G01N2009/024—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids the volume being determined directly, e.g. by size of container
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a scrap steel detection method, which comprises the following steps of S1: and (3) detecting the thickness of bulk waste steel: accurately detecting the thickness of bulk waste steel, and S12: firstly, visually inspecting the width of bulk steel scraps, and S2: and (3) wood shaving cake pressing detection: the volume and weight of the wood shavings pressed cake are detected and chemical analysis and inspection are performed, S21: the diameter and thickness of the wood shavings pressed cake were measured by a caliper, and the volume of the wood shavings pressed cake was calculated by a formula, S3: and (3) detecting the whole vehicle materials: and directly measuring the bulk density of the crushed whole car steel scraps. According to the scrap steel detection method, the corresponding standard scale clamping grooves are designed independently according to the material thickness standard, the working efficiency and the accuracy are improved, the wood shaving cake pressing detection method is innovated independently, the wood shaving cake pressing detection range is expanded to physical and chemical component analysis, powerful data support is provided for production use, the scrap steel crushing detection method is innovated independently, the bulk density of the scrap steel crushing detection method is detected by using a company weight measurement system through the whole material, the labor intensity of workers is reduced, and the data representativeness is improved.
Description
Technical Field
The invention relates to the technical field of scrap steel quality inspection, in particular to a scrap steel detection method.
Background
In the context of scrap steel smelting, scrap steel inspection is an operation particularly important in the process of smelting steel. When the material is discharged, the information summarizing of the total number, the types and the sizes (length, width and thickness) of the scrap steel and the stacking density of the crushed aggregates and the judgment of the grade of the scrap steel are important steps in an industrial production line.
According to the intelligent scrap steel detection and judgment method, system, medium and terminal based on machine vision, which are disclosed by the publication No. CN112348791A, under the special working scene of a scrap steel stock yard, by utilizing a convolutional neural network and machine vision, the intelligent scrap steel detection and judgment is automatically carried out after the remote monitoring of scrap steel detection and automatic snapshot of a material type picture, the labor intensity of staff is greatly reduced, the mixing problems of scrap steel material type doping, impurity reduction and the like are reduced, the detection and unloading speed is improved, the scrap steel detection is fair, accurate and efficient, the production is high-intelligent, and the detection method has higher accuracy and reliability, but has certain defects;
1. the existing scrap steel detection method is carried out visually when detecting the thickness of bulk scrap steel, and is carried out by using a ruler and a tape measure when generating objection, so that the work is complicated and the accuracy is not high.
2. The existing scrap steel detection method is also capable of only detecting the surface quality condition of the shavings pressed cakes by visual inspection, and cannot detect the ash occupation ratio, the iron content, harmful elements and the like, and cannot estimate the utilization rate, the cost performance, the cost accounting and the like of the shavings pressed cakes.
3. In the existing scrap steel detection method, when detecting the stacking density of scrap steel crushed materials, measurement and calculation are mostly carried out by using small container sampling, the representativeness is not strong by using the small container sampling, and a large amount of people, tools, equipment and the like are wasted by using large container sampling.
Aiming at the problems, innovative design is urgently needed on the basis of the original scrap steel detection method.
Disclosure of Invention
The invention aims to provide a scrap steel detection method, which aims to solve the problems that in the prior art, the existing scrap steel detection method is carried out visually when detecting the thickness of bulk steel scraps, a ruler and a tape measure are used for measurement when generating objections, the work is complicated, the accuracy is not high, the existing scrap steel detection method can only detect the surface quality condition of a wood shavings pressed cake through visual inspection, the ash occupation ratio, the iron content, harmful elements and the like can not be detected through visual inspection, the utilization rate, the cost performance, the cost accounting and the like of the waste steel shavings can not be estimated, the existing scrap steel detection method is mainly used for measuring and calculating the stacking density of scrap steel shavings by using a small container sample, the representativeness is not strong by using a small container sample, and a large amount of people, tools, equipment and the like are wasted by using a large container sample.
In order to achieve the above purpose, the present invention provides the following technical solutions: a scrap steel detection method comprises the following steps,
s1: and (3) detecting the thickness of bulk waste steel: accurately detecting the thickness of bulk waste steel;
s12: firstly, visually inspecting the width of the bulk waste steel, and detecting in detail through a tool when objection is generated by visual inspection of the bulk waste steel;
s13: detecting the thickness of bulk waste steel through a stainless steel ruler, clamping a clamping groove of the stainless steel ruler on the bulk waste steel, and observing whether a gap exists between the bulk waste steel and the clamping groove of the stainless steel ruler and whether the bulk waste steel can be clamped into the clamping groove of the stainless steel ruler;
s14: when the bulk waste steel is attached to the stainless steel ruler clamping groove without gaps, the width of the bulk waste steel is qualified, and when the bulk waste steel clamp does not enter the stainless steel ruler clamp or the gaps between the bulk waste steel and the stainless steel ruler clamping groove are too large, the width of the bulk waste steel is unqualified;
s2: and (3) wood shaving cake pressing detection: detecting the volume and the weight of the wood shaving pressed cake, and performing chemical analysis and detection;
s21: measuring the diameter and thickness of the wood shaving pressed cake by a caliper, and calculating the volume of the wood shaving pressed cake by a formula;
s22: calculating the stacking density of the wood shavings pressed cakes by weighing and measuring the weight of the wood shavings pressed cakes and then calculating the stacking density of the wood shavings pressed cakes by a formula;
s23: decomposing the wood shavings pressed cakes through an iron hammer, and screening the wood shavings pressed cakes through a screen;
s24: respectively preparing screening parts for chemical analysis and inspection, and measuring the quality condition of the wood shaving pressed cake through the results of physical and chemical analysis;
s3: and (3) detecting the whole vehicle materials: directly measuring the bulk density of the whole car scrap steel crushed material;
s32: firstly, driving the empty vehicle to a wagon balance, detecting the weight of the empty vehicle, and recording the weight of the empty vehicle;
s33: loading the crushed scrap steel crushed materials into a carriage of an empty car, and detecting the car filled with the scrap steel crushed materials again through a wagon balance;
s33: calculating the weight of the whole car scrap steel crushed material through a formula;
s34: measuring the length of the outside of the carriage by a tape measure, reducing the measured length by the wall thickness of the two sides of the carriage, measuring the width of the outside of the carriage by the tape measure, and reducing the measured width by the wall thickness of the two sides of the carriage as well, wherein the wall thickness of the two sides of the vehicle is 0.1M;
s35: then vertically inserting a ruler into the carriage, and measuring the height from the highest point of the material surface to the bottom of the carriage;
s36: calculating the volume of the materials in the carriage through a formula;
s37: and calculating the bulk density of the whole car scrap steel crushed material through a formula.
Preferably, the stainless steel ruler in S13 is cut by a cutting device into a clamping groove, and the width of the clamping groove is equal to the thickness of the standard bulk waste steel.
Preferably, the calculation formula of the volume of the wood shaving cake in S21 is as follows: volume of wood shavings pressed cake= (diameter of wood shavings pressed cake/2) 2 X pi x thickness of the chip cake.
Preferably, the calculation formula of the bulk density of the wood shaving pressed cake in S22 is as follows: bulk density of the shavings pressed cake = weight of shavings pressed cake/volume of shavings pressed cake.
Preferably, the decomposing manner in S23 is to hammer the wood shaving cake by a hammer, so as to hammer the wood shaving cake to decompose the wood shaving cake.
Preferably, the length and width of the sieve in S23 is 3×3mm, and the number of sieves is plural, and the pore size of each sieve is different, and multiple groups of samples are sieved by sieves with different pore sizes.
Preferably, the weight calculation formula of the whole car scrap steel crushed material in S33 is as follows: weight of scrap steel crushed material = weight of empty whole car-weight of whole car after loading.
Preferably, the volume calculation formula of the material in the carriage in S36 is: material volume= (car exterior length-0.1 m) × (car exterior width-0.1 m) ×material level highest point to car bottom height.
Preferably, in S37, the bulk density calculation formula of the whole vehicle scrap steel crushed material is: bulk density of whole car scrap steel crushed material = weight of whole car scrap steel crushed material/volume of whole car scrap steel crushed material.
Compared with the prior art, the invention has the beneficial effects that: according to the scrap steel detection method, according to the material thickness standard, a corresponding standard scale clamping groove is designed independently, the working efficiency and accuracy are improved, the wood shaving pressed cake detection range is expanded to physical and chemical component analysis, powerful data support is provided for production use, the bulk density is detected by using a company weight measurement system, the labor intensity of workers is reduced, and the data representativeness is improved:
1. the thickness of the bulk waste steel is detected through the stainless steel ruler, the stainless steel ruler is provided with a clamping groove by a cutting device, the clamping groove width of the stainless steel ruler is equal to the standard thickness of the bulk waste steel, the clamping groove of the stainless steel ruler is clamped on the bulk waste steel, whether a gap exists between the bulk waste steel and the stainless steel ruler clamping groove or not and whether the bulk waste steel can be clamped into the stainless steel ruler clamping groove or not are observed, when the bulk waste steel is attached to the stainless steel ruler clamping groove and is free of gaps, the width of the bulk waste steel is qualified, when the gap between the bulk waste steel clamp and the stainless steel ruler clamping groove is too large, the width of the bulk waste steel is unqualified, and the corresponding standard scale clamping groove is designed independently, so that the working efficiency and the accuracy are improved;
2. measuring the diameter and thickness of the wood shaving pressed cake through a caliper, calculating the volume of the wood shaving pressed cake through a formula, measuring the weight of the wood shaving pressed cake through a formula, calculating the stacking density of the wood shaving pressed cake through a formula, decomposing and screening the wood shaving pressed cake, respectively taking the screening parts for chemical analysis and inspection, measuring the quality condition of the wood shaving pressed cake through the results of physical and chemical analysis, expanding the checking range of the wood shaving pressed cake to physical and chemical component analysis, and providing powerful data support for production use;
3. the method comprises the steps of running an empty car to a wagon balance, detecting the weight of the empty car, recording the weight of the empty car, loading crushed steel scraps into a carriage of the empty car, detecting the car filled with the crushed steel scraps again through the wagon balance, calculating the weight of the crushed steel scraps of the whole car through a formula, measuring the length of the outside of the carriage through a tape measure, reducing the measured length by the wall thickness of two sides of the carriage, measuring the width of the outside of the carriage through the tape measure, reducing the measured width by the wall thickness of two sides of the carriage, enabling the wall thickness of the two sides of the vehicle to be 0.1M, then vertically inserting a ruler into the carriage, measuring the height from the highest point of a material surface to the bottom of the carriage, calculating the volume of materials in the carriage through the formula, calculating the bulk density of the crushed steel scraps of the whole car through the formula, checking the bulk density of the materials of the whole car, reducing labor intensity of workers and improving the data representativeness.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides the technical scheme that: a scrap steel detection method comprises the following steps,
s1: and (3) detecting the thickness of bulk waste steel: accurately detecting the thickness of bulk waste steel;
s12: firstly, visually inspecting the width of the bulk waste steel, and detecting in detail through a tool when objection is generated by visual inspection of the bulk waste steel;
s13: detecting the thickness of bulk waste steel through a stainless steel ruler, wherein the stainless steel ruler is provided with a clamping groove by a cutting device, the width of the clamping groove is equal to the standard thickness of the bulk waste steel, the clamping groove of the stainless steel ruler is clamped on the bulk waste steel, and whether a gap exists between the bulk waste steel and the clamping groove of the stainless steel ruler or not and whether the bulk waste steel can be clamped in the clamping groove of the stainless steel ruler or not are observed;
s14: when the bulk waste steel is attached to the stainless steel ruler clamping groove without gaps, the width of the bulk waste steel is qualified, and when the bulk waste steel clamp does not enter the stainless steel ruler clamp or the gaps between the bulk waste steel and the stainless steel ruler clamping groove are too large, the width of the bulk waste steel is unqualified;
s2: and (3) wood shaving cake pressing detection: detecting the volume and the weight of the wood shaving pressed cake, and performing chemical analysis and detection;
s21: the diameter and thickness of the wood shaving pressed cake are measured by a caliper, and the volume of the wood shaving pressed cake is calculated by a formula: volume of wood shavings pressed cake= (diameter of wood shavings pressed cake/2) 2 X pi x thickness of the wood chip cake;
s22: the bulk density of the chip cake is calculated by weighing the chip cake and then by the formula: bulk density of the shavings pressed cake = weight of shavings pressed cake/volume of shavings pressed cake;
s23: the method comprises the steps of decomposing a wood shaving pressed cake through an iron hammer, beating the wood shaving pressed cake through the iron hammer, so that the wood shaving pressed cake is smashed, decomposing the wood shaving pressed cake, screening the wood shaving pressed cake through a screen, wherein the length and width specification of the screen is 3X 3MM, a plurality of screens are arranged, the pore sizes of each screen are different, and a plurality of groups of samples are screened out through screens with pore sizes of different sizes;
s24: respectively preparing screening parts for chemical analysis and inspection, and measuring the quality condition of the wood shaving pressed cake through the results of physical and chemical analysis;
s3: and (3) detecting the whole vehicle materials: directly measuring the bulk density of the whole car scrap steel crushed material;
s32: firstly, driving the empty vehicle to a wagon balance, detecting the weight of the empty vehicle, and recording the weight of the empty vehicle;
s33: loading the crushed scrap steel crushed materials into a carriage of an empty car, and detecting the car filled with the scrap steel crushed materials again through a wagon balance;
s33: the weight of the whole car scrap steel crushed material is calculated through a formula, and the formula is as follows: weight of scrap steel crushed material = weight of empty whole car-weight of whole car after loading;
s34: measuring the length of the outside of the carriage by a tape measure, reducing the measured length by the wall thickness of the two sides of the carriage, measuring the width of the outside of the carriage by the tape measure, and reducing the measured width by the wall thickness of the two sides of the carriage as well, wherein the wall thickness of the two sides of the vehicle is 0.1M;
s35: then vertically inserting a ruler into the carriage, and measuring the height from the highest point of the material surface to the bottom of the carriage;
s36: the volume of the material in the carriage is calculated through the formula, and the formula is as follows: material volume= (car outside length-0.1 m) × (car outside width-0.1 m) ×material level highest point to car bottom height;
s37: the bulk density of the whole car scrap steel crushed material is calculated through a formula, and the formula is as follows: bulk density of whole car scrap steel crushed material = weight of whole car scrap steel crushed material/volume of whole car scrap steel crushed material.
What is not described in detail in this specification is prior art known to those skilled in the art.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The scrap steel detection method comprises the following steps of:
s1: and (3) detecting the thickness of bulk waste steel: accurately detecting the thickness of bulk waste steel;
s12: firstly, visually inspecting the width of the bulk waste steel, and detecting in detail through a tool when objection is generated by visual inspection of the bulk waste steel;
s13: detecting the thickness of bulk waste steel through a stainless steel ruler, clamping a clamping groove of the stainless steel ruler on the bulk waste steel, and observing whether a gap exists between the bulk waste steel and the clamping groove of the stainless steel ruler and whether the bulk waste steel can be clamped into the clamping groove of the stainless steel ruler;
s14: when the bulk waste steel is attached to the stainless steel ruler clamping groove without gaps, the width of the bulk waste steel is qualified, and when the bulk waste steel clamp does not enter the stainless steel ruler clamp or the gaps between the bulk waste steel and the stainless steel ruler clamping groove are too large, the width of the bulk waste steel is unqualified;
s2: and (3) wood shaving cake pressing detection: detecting the volume and the weight of the wood shaving pressed cake, and performing chemical analysis and detection;
s21: measuring the diameter and thickness of the wood shaving pressed cake by a caliper, and calculating the volume of the wood shaving pressed cake by a formula;
s22: calculating the stacking density of the wood shavings pressed cakes by weighing and measuring the weight of the wood shavings pressed cakes and then calculating the stacking density of the wood shavings pressed cakes by a formula;
s23: decomposing the wood shavings pressed cakes through an iron hammer, and screening the wood shavings pressed cakes through a screen;
s24: respectively preparing screening parts for chemical analysis and inspection, and measuring the quality condition of the wood shaving pressed cake through the results of physical and chemical analysis;
s3: and (3) detecting the whole vehicle materials: directly measuring the bulk density of the whole car scrap steel crushed material;
s32: firstly, driving the empty vehicle to a wagon balance, detecting the weight of the empty vehicle, and recording the weight of the empty vehicle;
s33: loading the crushed scrap steel crushed materials into a carriage of an empty car, and detecting the car filled with the scrap steel crushed materials again through a wagon balance;
s33: calculating the weight of the whole car scrap steel crushed material through a formula;
s34: measuring the length of the outside of the carriage by a tape measure, reducing the measured length by the wall thickness of the two sides of the carriage, measuring the width of the outside of the carriage by the tape measure, and reducing the measured width by the wall thickness of the two sides of the carriage as well, wherein the wall thickness of the two sides of the vehicle is 0.1M;
s35: then vertically inserting a ruler into the carriage, and measuring the height from the highest point of the material surface to the bottom of the carriage;
s36: calculating the volume of the materials in the carriage through a formula;
s37: and calculating the bulk density of the whole car scrap steel crushed material through a formula.
2. The method for detecting scrap steel according to claim 1, wherein: the stainless steel ruler in the step S13 is provided with a clamping groove which is cut by the cutting device, and the width of the clamping groove is equal to the thickness of the standard bulk waste steel.
3. The method for detecting scrap steel according to claim 1, wherein: the calculation formula of the volume of the wood shaving pressed cake in the step S21 is as follows: volume of wood shavings pressed cake= (diameter of wood shavings pressed cake/2) 2 X pi x thickness of the chip cake.
4. The method for detecting scrap steel according to claim 1, wherein: the calculation formula of the stacking density of the wood shaving pressed cake in the step S22 is as follows: bulk density of the shavings pressed cake = weight of shavings pressed cake/volume of shavings pressed cake.
5. The method for detecting scrap steel according to claim 1, wherein: the decomposing mode in S23 is to hammer the wood shaving pressed cake by a hammer, so as to hammer the wood shaving pressed cake to decompose the wood shaving pressed cake.
6. The method for detecting scrap steel according to claim 1, wherein: the length and width specifications of the sieves in the step S23 are 3X 3MM, a plurality of sieves are arranged, the pore sizes of each sieve are different, and a plurality of groups of samples are sieved through the sieves with different pore sizes.
7. The method for detecting scrap steel according to claim 1, wherein: the weight calculation formula of the whole car scrap steel crushed material in the S33 is as follows: weight of scrap steel crushed material = weight of empty whole car-weight of whole car after loading.
8. The method for detecting scrap steel according to claim 1, wherein: the volume calculation formula of the materials in the carriage in the S36 is as follows: material volume= (car exterior length-0.1 m) × (car exterior width-0.1 m) ×material level highest point to car bottom height.
9. The method for detecting scrap steel according to claim 1, wherein: the bulk density calculation formula of the whole car scrap steel crushed material in the S37 is as follows: bulk density of whole car scrap steel crushed material = weight of whole car scrap steel crushed material/volume of whole car scrap steel crushed material.
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| CN111537379A (en) * | 2020-05-09 | 2020-08-14 | 广东韶钢松山股份有限公司 | Method for obtaining impurity rate of broken scrap steel |
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