CN112197722B - Method for inspecting overall dimension of steel - Google Patents
Method for inspecting overall dimension of steel Download PDFInfo
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- CN112197722B CN112197722B CN202010968680.1A CN202010968680A CN112197722B CN 112197722 B CN112197722 B CN 112197722B CN 202010968680 A CN202010968680 A CN 202010968680A CN 112197722 B CN112197722 B CN 112197722B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 58
- 239000010959 steel Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000007689 inspection Methods 0.000 claims abstract description 74
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 23
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/204—Structure thereof, e.g. crystal structure
- G01N33/2045—Defects
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a method for inspecting the overall dimension of steel, which comprises the following steps of step-by-step inspection aiming at different target positions, and the first step of inspection of a quality inspection position of a cooling bed and a position of a moving chain; the second step, the third step, the goods yard pile up neatly position is examined; step two, inspecting a finished product; firstly, checking the overall dimension of the lengthened head shearing position; secondly, performing key inspection on the first fixed length of the head; thirdly, continuously checking the second fixed-size material; fourth point, fifth point, sixth point: comparing and judging the actual quality condition of one quarter position and two quarter positions of the rolled steel of the whole billet; the seventh point, confirm the length of cutting of the tail; and eighth point: inspecting the position 8-12 m inward of the tail part; according to the method for inspecting the overall dimension of the steel, quality problems can be found in time, batch unqualified products are avoided, and quality information can be reflected accurately in time.
Description
Technical Field
The invention relates to a method for inspecting the overall dimension of steel, belonging to the technical field of inspection of the overall dimension of steel.
Background
Aiming at the condition that the personnel configuration of the current steel rolling product inspection station is less and the main problems which are generally reflected by the steel rolling quality inspection personnel: the responsibility is heavy, the range of the working surface is wide, the steel products are various, and problems can occur in a certain link due to slight negligence in the work. The invention provides a method for inspecting the external dimension of steel, which is implemented by a 'three-step and eight-point' inspection method, improves inspection efficiency, avoids the repeatability of work, is beneficial to self-inspection and avoids the occurrence of large-batch unqualified products through scientifically planning inspection procedures.
Disclosure of Invention
In order to solve the problems, the invention provides a method for inspecting the external dimension of the steel, according to the operation verification of on-duty inspectors, the method is simple and has no repeated work, the quality problems can be found in time, the batch unqualified products are avoided, the found problems can be traced to the end, and the quality information can be reflected accurately in time.
The invention discloses a steel product outline dimension inspection method, which comprises the following steps:
step one, carrying out step-by-step inspection aiming at different target positions,
the first step, the quality inspection position of the cooling bed and the position inspection of the mobile chain,
1) the cold bed quality inspection position monitors sampling in the production process, and the overall dimension and the surface quality of the product are inspected in a targeted manner;
2) moving the position of the chain, and checking and confirming the hot steel calorie amount, the turning, the overall dimension and the surface quality of the position of the moving chain;
the second step, the position inspection of the three chains,
1) inspecting the specification below phi 25, drawing out a sample to measure, particularly inspecting the external dimension and the surface quality by taking the first and second measured sizes of the head as the weights;
2) the specification above phi 25 is inspected, and the specification is large, the temperature is high, and the specification can be extended to a weighing and hoisting position for inspection, so that the specification is extended to the weighing and hoisting position for inspection;
thirdly, checking the stacking position of a goods yard, wherein in the process of stacking products, the overall dimension, the surface quality and the state identification are checked every two to three layers; the real-time goods yard inspection has respective side points for the quality of the steel in cold and hot states;
step two, the finished product is inspected,
firstly, checking the overall dimension of the lengthened head shearing position;
secondly, performing key inspection on the first fixed length of the head;
thirdly, continuously checking the second fixed-size material;
fourth point, fifth point, sixth point: comparing and judging the actual quality condition at one quarter position and two quarters position of the rolled steel of the whole billet, namely the third steel to the fifth steel, and ensuring the quality of the rodding property in the continuous rolling state;
the seventh point, confirm the length of cutting of the tail;
and eighth point: the steel tail is influenced by the electric control speed adjustment of the loop, so that the steel pulling phenomenon is easily caused, and therefore, the position 8 to 12 meters inwards from the tail is inspected.
Furthermore, in the step-by-step inspection process aiming at different target positions in the step one, the key points of each target position are controlled, and the key points of the fluctuation cycle of the product quality represented by a new hole, a middle-aged hole and an old hole are tracked by combining the rolling tonnage of the rolled hole, so that the high efficiency of the product inspection is ensured to the maximum extent. The method not only improves the precision of quality inspection, but also finds problems early to guide production and reduce unqualified products, and has important significance for improving and controlling the product quality.
In a preferred embodiment, in the three-chain position inspection in the second step, periodic inspection is performed on steel materials of different specifications, and defective materials such as short bars are discovered.
In a preferred embodiment, in the third point of the second step, the second fixed-length material is inspected and the extension possibility of the second point is rechecked at the same time.
Further, in the seventh point of the second step, since the tail is affected by tension and free rolling, the inspection items include the outer shape dimension, the surface quality, and the shear length.
Compared with the prior art, the method for inspecting the overall dimension of the steel improves the accuracy of inspecting the overall dimension and quality of the steel, and solves the problem of error and omission inspection; the ordered inspection program has high efficiency and avoids repeated useless work; the production line operators on duty use the method specification to facilitate self-checking and mutual inspection, thereby avoiding the occurrence of large-batch unqualified products and improving the qualified rate of the overall dimension of the steel.
Drawings
FIG. 1 is a schematic diagram of a first step of the cold bed quality inspection method of the present invention.
FIG. 2 is a schematic diagram of the position of the moving chain in the first step of the present invention.
FIG. 3 is a schematic diagram of the three strand inspection position of the second step of the present invention.
Fig. 4 is a schematic illustration of the inspection of the palletization process in the goods yard in the third step of the present invention.
FIG. 5 is a schematic diagram of an eight-point specific detection;
in the figure, a is a detection bit of a first point, B is a detection bit of a second point, C is a detection bit of a third point, D is a detection bit of a fourth point, E is a detection bit of a fifth point, F is a detection bit of a sixth point, G is a detection bit of a seventh point, and H is a detection bit of an eighth point.
Detailed Description
The invention discloses a steel product outline dimension inspection method, which comprises the following steps:
step one, carrying out step-by-step inspection aiming at different target positions,
the first step, the quality inspection position of the cooling bed and the position inspection of the mobile chain,
1) the cold bed quality inspection position monitors sampling in the production process, and the overall dimension and the surface quality of the product are inspected in a targeted manner;
2) moving the position of the chain, and checking and confirming the hot steel calorie amount, the turning, the overall dimension and the surface quality of the position of the moving chain;
as shown in fig. 1 and 2, taking sample detection after gas cutting and hot steel detection of a cold bed moving chain as an example, a red steel sample needs to be rapidly cooled by water after being taken down so as to rapidly obtain the external dimension of a steel product and facilitate the adjustment of the material shape in a rolling mill; the purpose of cold bed moving chain hot steel detection is to verify whether the steel size is proper;
the second step, the position inspection of the three chains,
1) inspecting the specification below phi 25, drawing out a sample to measure, particularly inspecting the external dimension and the surface quality by taking the first and second measured sizes of the head as the weights;
2) the specification above phi 25 is inspected, and the specification is large, the temperature is high, and the specification can be extended to a weighing and hoisting position for inspection, so that the specification is extended to the weighing and hoisting position for inspection;
as shown in fig. 3, the purpose of the three-chain position emphasis detection is to determine whether the head shearing is clean and whether the size meets the standard requirements; subsequently verifying whether the second, third, fourth and fifth dimensions meet the standard requirements;
thirdly, checking the stacking position of a goods yard, wherein in the process of stacking products, the overall dimension, the surface quality and the state identification are checked every two to three layers;
as shown in fig. 4, the key point of inspection in the stacking process of a goods yard is that the stations are positioned at four corners of the stacking position, so that the steel quality conditions of multiple angles in the transverse direction, the vertical direction, the upper direction and the lower direction can be visually detected;
step two, the finished product is inspected,
firstly, checking the overall dimension of the lengthened head shearing position;
secondly, performing key inspection on the first fixed length of the head;
thirdly, continuously checking the second fixed-size material;
fourth point, fifth point, sixth point: comparing and judging the actual quality condition of one quarter position and two quarter positions of a steel rolled by a whole billet to ensure the quality of the rodding property in a continuous rolling state;
the seventh point, confirm the length of cutting of the tail;
and eighth point: the steel tail is influenced by the electric control speed adjustment of the loop, so that the steel pulling phenomenon is easily caused, and therefore, the position 8 to 12 meters inwards from the tail is inspected.
As shown in fig. 5, the principle of detecting the external dimensions of different points of the steel material in the continuous rolling process is illustrated by indicating a schematic diagram of the steel material sizing position after head-to-tail rolling of a complete steel billet; in the figure, a is a detection position (first branch steel) of a first point, B is a detection position (first branch steel) of a second point, C is a detection position (second branch steel) of a third point, D is a detection position (third branch steel) of a fourth point, E is a detection position (fourth branch steel) of a fifth point, F is a detection position (fifth branch steel) of a sixth point, G is a detection position (tail steel) of a seventh point, and H is a detection position (tail steel) of an eighth point.
In the step-by-step inspection process aiming at different target positions in the step one, the key points of each target position are controlled, and the key points of the fluctuation cycle of the product quality represented by a new hole, a middle-aged hole and an old hole are tracked by combining the rolling tonnage of the rolled hole, so that the high efficiency of the product inspection is ensured to the maximum extent. The method not only improves the precision of quality inspection, but also finds problems early to guide production and reduce unqualified products, and has important significance for improving and controlling the product quality.
In the process of the three-chain position inspection in the second step, the steel products with different specifications are periodically inspected, and unqualified products such as short bars are discovered in time.
And in the third point of the second step, the second fixed-length material is checked, and the extension possibility rechecking is carried out on the second point at the same time.
In the seventh point of the second step, since the tail is affected by tension and free rolling, the inspection items include the outer dimension, the surface quality, and the shear length.
The steel overall dimension inspection method adopts a three-step eight-point inspection method, so that an inspection program is standardized, strict execution can ensure strict supervision process, and the phenomenon of wrong and missed inspection can be avoided by executing inspection and supervision in the whole process;
in the production process, the key points of each target position are controlled, and the quality fluctuation period of the product represented by a new hole, a middle-aged hole and an old hole is tracked in a key point mode by combining the hole rolling tonnage, so that the high efficiency of product inspection is ensured to the maximum extent; the three-step method is adopted for inspection, so that the quality inspection precision is improved, meanwhile, problems are found early to guide production and reduce unqualified products, and the method has important significance for improving and controlling the product quality; in the finished product inspection process, eight process control inspection key points are set simultaneously so as to ensure the product quality and improve the qualified rate of the overall dimension of the steel; wherein, according to the actual production situation, the sequence of the three steps can not be reversed;
after the product quality inspection flow is improved, repeated work of quality inspection personnel can be reduced, and the quality inspection missing caused by quality problems is avoided particularly when the quality problems are more and busy; the inspection method of the invention reduces the operation steps, optimizes the supervision process, improves the inspection accuracy and finally achieves the effect of getting twice the result with half the effort; the detection method provided by the invention is beneficial to self-detection and mutual detection by production line operators on duty, prevents large-batch unqualified products from occurring, and improves the qualified rate of the overall dimension of steel products.
The above-described embodiments are merely preferred embodiments of the present invention, and all equivalent changes or modifications of the structures, features and principles described in the claims of the present invention are included in the scope of the present invention.
Claims (5)
1. A method for inspecting the external dimension of a steel material is characterized by comprising the following steps:
step one, carrying out step-by-step inspection aiming at different target positions,
the first step, the quality inspection position of the cooling bed and the position inspection of the mobile chain,
1) the cold bed quality inspection position monitors sampling in the production process, and the overall dimension and the surface quality of the product are inspected in a targeted manner;
2) moving the position of the chain, and checking and confirming the hot steel calorie amount, the turning, the overall dimension and the surface quality of the position of the moving chain;
the second step, the position inspection of the three chains,
1) inspecting the specification below phi 25, drawing out a sample to measure, particularly inspecting the external dimension and the surface quality by taking the first and second measured sizes of the head as the weights;
2) inspecting specifications over phi 25, and inspecting at a weighing and hoisting position;
thirdly, checking the stacking position of a goods yard, wherein in the process of stacking products, the overall dimension, the surface quality and the state identification are checked every two to three layers;
step two, the finished product is inspected,
firstly, checking the overall dimension of the lengthened head shearing position;
secondly, performing key inspection on the first fixed length of the head;
thirdly, continuously checking the second fixed-size material;
fourth point, fifth point, sixth point: comparing and judging the actual quality condition of one quarter position and two quarter positions of a steel rolled by a whole billet to ensure the quality of the rodding property in a continuous rolling state;
the seventh point, confirm the length of cutting of the tail;
and eighth point: the tail was examined at a position 8 to 12 meters inward.
2. A steel product outer dimension inspection method according to claim 1, characterized in that: in the step-by-step inspection process aiming at different target positions in the step one, the key points of each target position are controlled, and the key points of the product quality fluctuation period represented by a new hole, a middle-aged hole and an old hole are tracked by combining the rolling tonnage of the rolled hole.
3. A steel product outer dimension inspection method according to claim 1, characterized in that: in the process of the three-chain position inspection in the second step, the steel products with different specifications are periodically inspected, and unqualified products such as short bars are discovered in time.
4. A steel product outer dimension inspection method according to claim 1, characterized in that: and in the third point of the second step, the second fixed-length material is checked, and the extension possibility rechecking is carried out on the second point at the same time.
5. A steel product outer dimension inspection method according to claim 1, characterized in that: in the seventh point of the second step, the inspection items include the outer dimension, the surface quality and the cut length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010968680.1A CN112197722B (en) | 2020-09-15 | 2020-09-15 | Method for inspecting overall dimension of steel |
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| CN202010968680.1A CN112197722B (en) | 2020-09-15 | 2020-09-15 | Method for inspecting overall dimension of steel |
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| CN112197722B true CN112197722B (en) | 2022-01-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3245403A1 (en) * | 1982-03-15 | 1983-09-22 | VEB Schwermaschinenbau-Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg | Device for measuring the thickness and width of flat steel and testing for surface cracks therein |
| CN1253054A (en) * | 1998-10-30 | 2000-05-17 | 马鞍山钢铁股份有限公司 | Optimized sizing saw-cutting method for sections |
| CN104020271A (en) * | 2014-05-17 | 2014-09-03 | 苏州龙骏无损检测设备有限公司 | Nondestructive test equipment for circular rods and circular pipe metal materials |
| CN105984605A (en) * | 2015-01-31 | 2016-10-05 | 重庆展申机械厂 | Technology for inspecting surfaces of steel pipe finished products and packaging same |
| CN106825106A (en) * | 2017-02-22 | 2017-06-13 | 长葛市鸣机械有限公司 | The technique of thin-walled hot rolled seamless steel tube in a kind of double-core axle two-roller skew-rolling production |
-
2020
- 2020-09-15 CN CN202010968680.1A patent/CN112197722B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3245403A1 (en) * | 1982-03-15 | 1983-09-22 | VEB Schwermaschinenbau-Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg | Device for measuring the thickness and width of flat steel and testing for surface cracks therein |
| CN1253054A (en) * | 1998-10-30 | 2000-05-17 | 马鞍山钢铁股份有限公司 | Optimized sizing saw-cutting method for sections |
| CN104020271A (en) * | 2014-05-17 | 2014-09-03 | 苏州龙骏无损检测设备有限公司 | Nondestructive test equipment for circular rods and circular pipe metal materials |
| CN105984605A (en) * | 2015-01-31 | 2016-10-05 | 重庆展申机械厂 | Technology for inspecting surfaces of steel pipe finished products and packaging same |
| CN106825106A (en) * | 2017-02-22 | 2017-06-13 | 长葛市鸣机械有限公司 | The technique of thin-walled hot rolled seamless steel tube in a kind of double-core axle two-roller skew-rolling production |
Non-Patent Citations (1)
| Title |
|---|
| 精轧螺纹钢筋质量问题及工艺控制措施;武剑等;《轧钢》;20130815(第04期);全文 * |
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Denomination of invention: A method for inspecting the external dimensions of steel Effective date of registration: 20231222 Granted publication date: 20220104 Pledgee: Industrial and Commercial Bank of China Limited Feicheng sub branch Pledgor: SHIHENG SPECIAL STEEL GROUP Co.,Ltd. Registration number: Y2023980073806 |