CN114459951A - Scrap steel detection method - Google Patents
Scrap steel detection method Download PDFInfo
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- CN114459951A CN114459951A CN202210039823.XA CN202210039823A CN114459951A CN 114459951 A CN114459951 A CN 114459951A CN 202210039823 A CN202210039823 A CN 202210039823A CN 114459951 A CN114459951 A CN 114459951A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 138
- 239000010959 steel Substances 0.000 title claims abstract description 138
- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 239000002023 wood Substances 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 58
- 238000004458 analytical method Methods 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 32
- 239000010935 stainless steel Substances 0.000 claims description 32
- 239000002699 waste material Substances 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000013590 bulk material Substances 0.000 claims description 15
- 210000002268 wool Anatomy 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 5
- 238000011179 visual inspection Methods 0.000 description 5
- 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
-
- 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
Landscapes
- 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 steel scrap detection method, which comprises the following steps of S1: bulk scrap steel thickness detection: the thickness of accurate detection bulk cargo scrap steel, S12: first, the width of bulk scrap is visually observed, and S2: and (3) wood shaving pressed cake detection: the volume and weight of the pressed shavings were measured and tested for chemical analysis, S21: the diameter and thickness of the shavings pressed cake are measured by a caliper, and the volume of the shavings pressed cake is calculated by a formula, S3: and (3) detecting the finished automobile material: directly measuring the bulk density of the scrap steel crushed material of the whole vehicle. According to the scrap steel detection method, the scale clamping grooves corresponding to the standard are designed independently according to the material thickness standard, the working efficiency and the accuracy are improved, the shaving and cake pressing detection method is innovated independently, the shaving and cake pressing detection range is expanded to physical and chemical component analysis, powerful data support is provided for production and use, the scrap steel crushing material detection method is innovated independently, a company weight measurement system is utilized, the whole vehicle material is used for detecting the stacking density of the scrap steel crushing 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 steel scrap quality inspection, in particular to a steel scrap detection method.
Background
In the steel smelting scrap material scene, the scrap steel inspection is an operation which is particularly important in the steel smelting process. When the scrap steel is unloaded, the information summary of the total number, the type, the size (length, width and thickness), the crushed aggregate bulk density and the judgment of the scrap steel grade are important steps in an industrial production line.
For example, the intelligent detection and judgment method, system, medium and terminal for the steel scrap based on the machine vision, disclosed as CN112348791A, utilize the convolutional neural network and the machine vision, realize the automatic intelligent detection and judgment of the steel scrap after the remote monitoring of the steel scrap detection and the automatic snapshot of the material type picture in the special working scene of a steel scrap yard, greatly reduce the labor intensity of workers, reduce the mixed loading problems of the steel scrap material type doping, reduce impurities and the like, improve the detection and unloading speed, achieve the fair, accurate and efficient steel scrap detection, enable the production to be highly intelligent, and have higher accuracy and reliability, but the detection method still has certain defects;
1. the existing scrap steel detection method is carried out by visual inspection when the thickness of bulk scrap steel is detected, and is carried out by using a ruler and a tape measure when objections are generated, so that the work is complicated and the accuracy rate is low.
2. The existing scrap steel detection method can only detect the surface quality condition of the wood shavings pressed cakes through visual inspection, cannot detect ash ratio, iron content, harmful elements and the like, and cannot estimate the utilization rate, cost performance, cost accounting and the like of the wood shavings pressed cakes.
3. The prior steel scrap detection method is mostly to use small containers for sampling to measure and calculate when detecting the bulk density of the steel scrap broken materials, the small containers are not very representative, and the large containers are used for sampling, so that a large amount of people, tools, equipment and the like are wasted.
Aiming at the problems, innovative design is urgently needed on the basis of the original steel scrap detection method.
Disclosure of Invention
The invention aims to provide a scrap steel detection method, which solves the problems that the existing scrap steel detection method provided in the background art is performed by visual inspection when the thickness of bulk scrap steel is detected, the bulk scrap steel is measured by a ruler and a tape measure when objections are generated, the work is complicated and the accuracy is not high, the existing scrap steel detection method can only detect the surface quality condition of the bulk scrap steel by visual inspection through visual inspection when a wood shavings pressed cake is detected, the ash content ratio, the iron content, harmful elements and the like cannot be detected, the utilization rate, the cost performance, the cost accounting and the like cannot be estimated, the existing scrap steel detection method mostly uses small containers for sampling to measure and calculate when the stacking density of the scrap steel crushed materials is detected, the representativeness is not strong by using small containers for sampling to measure and calculate, and a large number of people, tools, equipment and the like are wasted when a large container is used for sampling.
In order to achieve the purpose, the invention provides the following technical scheme: a scrap steel detection method comprises the following steps,
s1: bulk scrap steel thickness detection: the thickness of bulk scrap steel is accurately detected;
s12: firstly, visually observing the width of bulk scrap steel, and carrying out detailed detection by a tool when objections are generated by visually observing the bulk scrap steel;
s13: detecting the thickness of the bulk scrap steel through a stainless steel ruler, clamping a clamping groove of the stainless steel ruler on the bulk scrap steel, and observing whether a gap exists between the bulk scrap steel and the clamping groove of the stainless steel ruler and whether the bulk scrap steel can be clamped into the clamping groove of the stainless steel ruler;
s14: when the bulk material waste steel is attached to the stainless steel ruler clamping groove and has no gap, the bulk material waste steel is qualified in width, and the bulk material waste steel is not inserted into the stainless steel ruler clamp or the gap between the bulk material waste steel and the stainless steel ruler clamping groove is too large, the bulk material waste steel is unqualified in width;
s2: and (3) wood shaving pressed cake detection: detecting the volume and the weight of the wood shaving pressed cake, and performing chemical analysis and inspection;
s21: measuring the diameter and the thickness of the wood shaving pressed cake through a caliper, and calculating the volume of the wood shaving pressed cake through a formula;
s22: weighing and measuring the weight of the wood shaving pressed cake, and then calculating the bulk density of the wood shaving pressed cake through a formula;
s23: decomposing the wood shaving pressed cakes through an iron hammer, and then screening the wood shaving pressed cakes through a screen;
s24: respectively preparing the screened parts, carrying out 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 finished automobile material: directly measuring the bulk density of the finished vehicle scrap steel crushed material;
s32: firstly, driving an empty vehicle to a wagon balance, detecting the weight of the empty vehicle, and recording the weight of the empty vehicle;
s33: filling the crushed scrap steel into a carriage of an empty vehicle, and detecting the vehicle filled with the crushed scrap steel again through a wagon balance;
s33: calculating the weight of the whole vehicle waste steel broken material through a formula;
s34: measuring the length outside the carriage through a measuring tape, reducing the measured length by the wall thicknesses of two sides of the carriage, measuring the width outside the carriage through the measuring tape, and reducing the measured width by the wall thicknesses of two sides of the carriage, wherein the wall thicknesses of two sides of the vehicle are 0.1M;
s35: then vertically inserting the straight ruler into the carriage, and measuring the height from the highest point of the charge level 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 scrap steel crushed material through a formula.
Preferably, the stainless steel ruler in S13 is cut by a cutting device to form a slot, and the width of the slot is equal to the thickness of the standard bulk scrap steel.
Preferably, the volume calculation formula of the wood shavings pressed cake in S21 is as follows: volume of the pressed wood shavings cake (diameter of pressed wood shavings/2)2X pi x thickness of the pressed wood wool cake.
Preferably, the bulk density of the wood shavings pressed cake in S22 is calculated by the formula: the bulk density of the pressed wood wool cake is the weight of the pressed wood wool cake per volume of the pressed wood wool cake.
Preferably, the disintegration in S23 is to break the pressed shavings cake by hammering the pressed shavings cake with an iron hammer.
Preferably, the size of the screen in S23 is 3 × 3MM, and there are multiple screens, and the aperture size of each screen is different, so that multiple groups of samples are screened through screens with different aperture sizes.
Preferably, the weight calculation formula of the whole vehicle waste steel crushed material in the step S33 is as follows: the weight of the broken scrap steel is equal to the weight of the whole empty vehicle and the weight of the whole loaded vehicle.
Preferably, in S36, the volume calculation formula of the material in the car is as follows: the volume of the material is (the length outside the carriage is minus 0.1m) multiplied by (the width outside the carriage is minus 0.1m) multiplied by the height from the highest point of the material surface to the bottom of the carriage.
Preferably, the formula for calculating the bulk density of the finished automobile scrap steel crushed material in the step S37 is as follows: the bulk density of the whole scrap steel crushed material is equal to the weight of the whole scrap steel crushed material/the volume of the whole scrap steel crushed material.
Compared with the prior art, the invention has the beneficial effects that: according to the method for detecting the scrap steel, a scale clamping groove corresponding to a standard is designed independently according to a material thickness standard, the working efficiency and the accuracy are improved, a shaving and cake pressing detection method is innovated independently, the shaving and cake pressing detection range is expanded to physical and chemical component analysis, powerful data support is provided for production and use, a scrap steel crushing material detection method is innovated independently, a company weight measurement system is utilized, a whole vehicle material is used for detecting the stacking density of the scrap steel crushing material, the labor intensity of workers is reduced, and the data representativeness is improved:
1. the thickness of bulk scrap steel is detected through a stainless steel ruler, the stainless steel ruler is provided with a clamping groove which is cut by a cutting device, the width of the clamping groove is equal to the thickness of standard bulk scrap steel, the clamping groove of the stainless steel ruler is clamped on the bulk scrap steel, whether a gap exists between the bulk scrap steel and the clamping groove of the stainless steel ruler or not and whether the bulk scrap steel can be clamped into the clamping groove of the stainless steel ruler are observed, when the bulk scrap steel is attached to the clamping groove of the stainless steel ruler and has no gap, the width of the bulk scrap steel is qualified, when the bulk scrap steel card does not enter the stainless steel ruler card or the gap between the bulk scrap steel and the clamping groove of the stainless steel ruler is too large, the width of the bulk scrap steel is unqualified, a scale clamping groove corresponding to the standard is designed independently, and the working efficiency and the accuracy are improved;
2. the diameter and the thickness of the wood shaving pressed cake are measured by a caliper, the volume of the wood shaving pressed cake is calculated by a formula, the weight of the wood shaving pressed cake is weighed, the bulk density of the wood shaving pressed cake is calculated by the formula, the wood shaving pressed cake is decomposed and screened, screened parts are respectively taken and subjected to chemical analysis and inspection, the quality condition of the wood shaving pressed cake is measured by the results of physical and chemical analysis, the inspection range of the wood shaving pressed cake is expanded to physical and chemical component analysis, and powerful data support is provided for production and use;
3. driving the empty wagon to a wagon balance, detecting the weight of the empty wagon, recording the weight of the empty wagon, loading the crushed scrap steel into a carriage of the empty wagon, the wagon full of the broken scrap steel materials is detected again through the wagon balance, the weight of the broken scrap steel materials of the whole wagon is calculated through a formula, the length outside the carriage is measured by the measuring tape, the measured length is reduced by the wall thickness of the two sides of the carriage, the width outside the carriage is measured by the tape measure, the wall thickness of the two sides of the carriage is also reduced after the width is measured, the wall thickness of the two sides of the vehicle is 0.1M, then vertically inserting the straight ruler into the carriage, measuring the height from the highest point of the material level to the bottom of the carriage, calculating the volume of the material in the carriage through a formula, the bulk density of the waste steel crushed materials of the whole vehicle is calculated through a formula, the bulk density of the waste steel crushed materials of the whole vehicle is checked by using the materials of the whole vehicle, the labor intensity of workers is reduced, and the data representativeness is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the technical scheme that: a method for detecting scrap steel comprises the following steps,
s1: bulk scrap steel thickness detection: the thickness of bulk scrap steel is accurately detected;
s12: firstly, visually observing the width of bulk scrap steel, and carrying out detailed detection by a tool when objections are generated by visually observing the bulk scrap steel;
s13: detecting the thickness of bulk scrap steel through a stainless steel ruler, wherein the stainless steel ruler is provided with a clamping groove cut by a cutting device, the width of the clamping groove is equal to the standard thickness of the bulk scrap steel, the clamping groove of the stainless steel ruler is clamped on the bulk scrap steel, and whether a gap exists between the bulk scrap steel and the clamping groove of the stainless steel ruler and whether the bulk scrap steel can be clamped into the clamping groove of the stainless steel ruler is observed;
s14: when the bulk material waste steel is attached to the stainless steel ruler clamping groove and has no gap, the bulk material waste steel is qualified in width, and the bulk material waste steel is not inserted into the stainless steel ruler clamp or the gap between the bulk material waste steel and the stainless steel ruler clamping groove is too large, the bulk material waste steel is unqualified in width;
s2: and (3) wood shaving pressed cake detection: detecting the volume and the weight of the wood shaving pressed cake, and performing chemical analysis and inspection;
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 the formula: volume of the pressed wood shavings cake (diameter of pressed wood shavings/2)2X pi x the thickness of the pressed wood wool cake;
s22: the bulk density of the wood wool pressed cake is calculated by weighing the wood wool pressed cake and then by the formula: the bulk density of the wood shaving pressed cake is equal to the weight of the wood shaving pressed cake/volume of the wood shaving pressed cake;
s23: the method comprises the following steps of decomposing a wood shaving pressed cake through an iron hammer, beating the wood shaving pressed cake through the iron hammer, hammering the wood shaving pressed cake into pieces, decomposing the wood shaving pressed cake, screening the wood shaving pressed cake through a screen, wherein the length and width of the screen are 3 multiplied by 3MM, the number of the screens is multiple, the aperture of each screen is different, and a plurality of groups of samples are screened through the screens with different apertures;
s24: respectively preparing the screened parts, carrying out 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 finished automobile material: directly measuring the bulk density of the finished vehicle scrap steel crushed material;
s32: firstly, driving an empty vehicle to a wagon balance, detecting the weight of the empty vehicle, and recording the weight of the empty vehicle;
s33: filling the crushed scrap steel into a carriage of an empty vehicle, and detecting the vehicle filled with the crushed scrap steel again through a wagon balance;
s33: the weight of the whole vehicle waste steel broken material is calculated through a formula, and the formula is as follows: the weight of the broken scrap steel is equal to the weight of the whole empty vehicle and the weight of the whole loaded vehicle;
s34: measuring the length outside the carriage through a measuring tape, reducing the measured length by the wall thicknesses of two sides of the carriage, measuring the width outside the carriage through the measuring tape, and reducing the measured width by the wall thicknesses of two sides of the carriage, wherein the wall thicknesses of two sides of the vehicle are 0.1M;
s35: then vertically inserting the straight ruler into the carriage, and measuring the height from the highest point of the charge level to the bottom of the carriage;
s36: the volume of the materials in the carriage is calculated through a formula, wherein the formula is as follows: the volume of the material is (the length outside the carriage is-0.1 m) multiplied by (the width outside the carriage is-0.1 m) multiplied by the height from the highest point of the material surface to the bottom of the carriage;
s37: calculating the bulk density of the whole scrap steel broken material through a formula, wherein the formula is as follows: the bulk density of the whole scrap steel crushed material is equal to the weight of the whole scrap steel crushed material/the volume of the whole scrap steel crushed material.
Those not described in detail in this specification are within the skill of the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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 method for detecting the steel scrap comprises the following steps and is characterized in that:
s1: bulk scrap steel thickness detection: the thickness of bulk scrap steel is accurately detected;
s12: firstly, visually observing the width of bulk scrap steel, and carrying out detailed detection by a tool when objections are generated by visually observing the bulk scrap steel;
s13: detecting the thickness of the bulk scrap steel through a stainless steel ruler, clamping a clamping groove of the stainless steel ruler on the bulk scrap steel, and observing whether a gap exists between the bulk scrap steel and the clamping groove of the stainless steel ruler and whether the bulk scrap steel can be clamped into the clamping groove of the stainless steel ruler;
s14: when the bulk material waste steel is attached to the stainless steel ruler clamping groove and has no gap, the bulk material waste steel is qualified in width, and the bulk material waste steel is not inserted into the stainless steel ruler clamp or the gap between the bulk material waste steel and the stainless steel ruler clamping groove is too large, the bulk material waste steel is unqualified in width;
s2: and (3) wood shaving pressed cake detection: detecting the volume and the weight of the wood shaving pressed cake, and performing chemical analysis and inspection;
s21: measuring the diameter and the thickness of the wood shaving pressed cake through a caliper, and calculating the volume of the wood shaving pressed cake through a formula;
s22: weighing and measuring the weight of the wood shaving pressed cake, and then calculating the bulk density of the wood shaving pressed cake through a formula;
s23: decomposing the wood shaving pressed cakes through an iron hammer, and then screening the wood shaving pressed cakes through a screen;
s24: respectively preparing the screened parts, carrying out 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 finished automobile material: directly measuring the bulk density of the finished vehicle scrap steel crushed material;
s32: firstly, driving an empty vehicle to a wagon balance, detecting the weight of the empty vehicle, and recording the weight of the empty vehicle;
s33: filling the crushed scrap steel into a carriage of an empty vehicle, and detecting the vehicle filled with the crushed scrap steel again through a wagon balance;
s33: calculating the weight of the whole vehicle waste steel broken material through a formula;
s34: measuring the length outside the carriage through a measuring tape, reducing the measured length by the wall thicknesses of two sides of the carriage, measuring the width outside the carriage through the measuring tape, and reducing the measured width by the wall thicknesses of two sides of the carriage, wherein the wall thicknesses of two sides of the vehicle are 0.1M;
s35: then vertically inserting the straight ruler into the carriage, and measuring the height from the highest point of the charge level 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 scrap steel crushed material through a formula.
2. The scrap steel detection method according to claim 1, characterized in that: the stainless steel ruler in the S13 is provided with a clamping groove cut by a cutting device, and the width of the clamping groove is equal to the thickness of standard bulk scrap steel.
3. The scrap steel detection method according to claim 1, characterized in that: the volume calculation formula of the wood shaving pressed cake in the S21 is as follows: volume of the pressed wood shavings cake (diameter of pressed wood shavings/2)2X pi x thickness of the pressed wood wool cake.
4. The scrap steel detection method according to claim 1, characterized in that: the calculation formula of the bulk density of the wood shaving pressed cake in the S22 is as follows: the bulk density of the pressed wood wool cake is the weight of the pressed wood wool cake per volume of the pressed wood wool cake.
5. The scrap steel detection method according to claim 1, characterized in that: the decomposition manner in S23 is to beat the pressed wood shavings cake with an iron hammer, thereby breaking the pressed wood shavings cake and decomposing the pressed wood shavings cake.
6. The scrap steel detection method according to claim 1, characterized in that: the length and width of the screen in the S23 are 3X 3MM, a plurality of screens are arranged, the aperture of each screen is different, and a plurality of groups of samples are screened out through the screens with different apertures.
7. The scrap steel detection method according to claim 1, characterized in that: the weight calculation formula of the whole vehicle waste steel crushed material in the S33 is as follows: the weight of the broken scrap steel is equal to the weight of the whole empty vehicle and the weight of the whole loaded vehicle.
8. The scrap steel detection method according to claim 1, characterized in that: the volume calculation formula of the materials in the car in the S36 is as follows: the volume of the material is (the length outside the carriage is minus 0.1m) multiplied by (the width outside the carriage is minus 0.1m) multiplied by the height from the highest point of the material surface to the bottom of the carriage.
9. The scrap steel detection method according to claim 1, characterized in that: the bulk density calculation formula of the finished automobile scrap steel crushed material in the S37 is as follows: the bulk density of the whole scrap steel crushed material is equal to the weight of the whole scrap steel crushed material/the volume of the whole scrap steel crushed material.
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| WO2020096158A1 (en) * | 2018-11-07 | 2020-05-14 | 에이블맥스(주) | Method for operating electric furnace by using scrap density |
| 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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