CN115018302A - CB2 steel casting running state supervision and management method - Google Patents
CB2 steel casting running state supervision and management method Download PDFInfo
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- CN115018302A CN115018302A CN202210602660.1A CN202210602660A CN115018302A CN 115018302 A CN115018302 A CN 115018302A CN 202210602660 A CN202210602660 A CN 202210602660A CN 115018302 A CN115018302 A CN 115018302A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06395—Quality analysis or management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/20—Administration of product repair or maintenance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/04—Manufacturing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a CB2 steel casting running state supervision and management method, which comprises the following steps: 1) the quality of the CB2 steel castings entering the factory is checked, the checking result is recorded into a central control machine, and the checking result is distributed to central control machines of other production workshops; 2) rechecking the quality inspection result recorded into the central control machine, welding the CB2 steel casting qualified after rechecking, detecting the welding quality, inputting the detection result of the welding quality into the central control machine, and then sending the detection result into the central control machine of other production workshops; meanwhile, video information in the welding process is collected and then sent to a central control machine in other production workshops; 3) the welding quality of the operating CB2 steel casting is regularly checked and subjected to aging rating, the detection and aging rating results are recorded into the handheld terminal and then are issued to a central control machine of each production workshop, and the method can comprehensively control the safety quality of the CB2 steel casting.
Description
Technical Field
The invention belongs to the technical field of operation supervision and management, and relates to a CB2 steel casting operation state supervision and management method.
Background
In order to further improve the thermal efficiency of a thermal power generating unit, reduce the power generation coal consumption, save energy and reduce emission, China has been vigorously developed since 2013 and builds a 620 ℃ high-efficiency ultra-supercritical unit (hereinafter referred to as a 620 ℃ unit). For a 620 ℃ unit, because the steam temperature of the steam turbine intermediate pressure cylinder is increased from 600 ℃ to 620 ℃, the improved martensite heat-resistant steel widely applied at present cannot meet the service requirements of important components such as the intermediate pressure cylinder, a main steam/reheating valve shell and the like, and therefore castings such as the intermediate pressure cylinder, the main steam/reheating valve shell and the like must be manufactured by novel CB2 steel with better performance. The CB2 cast steel belongs to a new material developed abroad, is mainly applied to a 620 ℃ high-efficiency ultra-supercritical unit in China, is applied in a primary stage, lacks experience in operation supervision and management of a CB2 cast steel after the unit is put into operation, and an effective CB2 cast steel operation supervision and management method needs to be provided urgently, so that the safety quality of a high-temperature cast steel of a steam turbine is comprehensively controlled, the risk of operation safety accidents of the cast steel of the steam turbine is fundamentally eliminated, and the operation safety of the ultra-supercritical unit is ensured.
Therefore, how to provide a CB2 steel casting operation supervision and management method capable of solving the above problems is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a monitoring and management method for the running state of a CB2 steel casting, which can comprehensively manage and control the safety quality of the CB2 steel casting.
In order to achieve the purpose, the supervision and management method for the operation state of the CB2 steel casting comprises the following steps:
1) the quality of the CB2 steel castings entering the factory is checked, the checking result is recorded into a central control machine, and the checking result is distributed to central control machines of other production workshops;
2) rechecking the quality inspection result recorded into the central control machine, welding the CB2 steel casting qualified after rechecking, detecting the welding quality, inputting the detection result of the welding quality into the central control machine, and then sending the detection result into the central control machine of other production workshops; meanwhile, video information in the welding process is collected and then sent to a central control machine of other production workshops;
3) and the welding quality of the running CB2 steel castings is periodically checked and subjected to aging rating, and the detection and aging rating results are recorded into a handheld terminal and then are issued to a central control machine of each production workshop.
In the step 1), the auditing result is issued to a central control machine of other production workshops through a local area network.
And 3), recording the detection and aging rating results into the handheld terminal, and then issuing the results to a central control machine of each production workshop through a local area network.
The specific operation of the step 1) is as follows:
11) rechecking the CB2 steel castings entering the factory;
12) the quality certificate of the CB2 steel casting, the commodity inspection qualification certificate of the CB2 steel casting and technical data which enter the factory are checked, and then the check result is input into a central control machine.
The specific operation of the step 11) is as follows: and carrying out macroscopic inspection, wall thickness measurement, nondestructive testing, hardness testing and metallographic inspection on the CB2 steel castings entering the factory.
The detection of the welding quality in the step 2) comprises pre-welding inspection and verification, routing inspection, inspection process supervision, welding quality inspection and verification and unqualified welding seam repair witnesses.
The method for monitoring welding quality by adopting field inspection and welding process video inspection comprises the following steps:
21) checking a welding process file before installation and welding, verifying the welding capability of a welder, and verifying the capability of a welding material library and welding equipment;
22) carrying out inspection and rechecking on the condition of on-site personnel certification, the recovery record of welding material acceptance, the drying and heat preservation condition, the welding environment, equipment and process parameters;
23) inspecting and supervising the quality inspection process of the welding seam;
24) checking and verifying the welding quality;
25) and (5) proving the repair of unqualified welding seams.
The concrete operations of checking the welding quality of the operated CB2 steel castings and carrying out aging rating in the step 3) are as follows:
31) monitoring and checking in-service metal;
32) removing cracks and repairing side stations for supervision;
33) and (5) aging and grading the metallographic structure.
The specific process of the metallographic structure aging rating comprises the following steps:
311) aging and grading the metallographic structure;
312) the aging organization supervises the operation and treatment measures.
The invention has the following beneficial effects:
the CB2 steel casting running state supervision and management method supervises and controls the plant entering quality, the installation quality and the running quality of the CB2 steel casting during specific operation, timely discovers and eliminates various quality defects and potential safety hazards in installation and running, ensures the reliable quality of the CB2 steel casting in the plant entering and service running, fundamentally eliminates safety accidents, ensures the running safety of the ultra-supercritical unit turbine steel casting under high temperature and high pressure, and realizes the comprehensive control of the safety quality of the CB2 steel casting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. 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.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the CB2 steel casting operation state supervision and management method comprises the following steps:
1) the quality of the CB2 steel castings entering the factory is checked, the checking result is recorded into a central control machine, and the checking result is issued to the central control machines of other production workshops through a local area network;
2) rechecking the quality inspection result input into the central control machine, welding the CB2 steel castings after the rechecking is qualified, detecting the welding quality, inputting the detection result of the welding quality into the central control machine, sending the detection result to the central control machines of other production workshops, acquiring video information in the welding process, and sending the video information to the central control machines of other production workshops;
3) and the welding quality of the running CB2 steel castings is periodically checked and subjected to aging rating, the detection and aging rating results are recorded into a handheld terminal, and then the results are issued to a central control machine of each production workshop through a local area network.
The specific operation of the step 1) is as follows:
11) rechecking the CB2 steel castings entering the factory;
12) the quality certificate of the CB2 steel casting, the commodity inspection qualification certificate of the CB2 steel casting and technical data which enter a factory are checked, and then the checking result is input into a central control machine.
The specific operation of the step 11) is as follows: and carrying out macroscopic inspection, wall thickness measurement, nondestructive testing, hardness testing and metallographic inspection on the CB2 steel castings entering the factory.
And 2) detecting the welding quality in the step 2), wherein the detection comprises pre-welding inspection and verification, routing inspection, inspection process supervision, welding quality inspection and verification and unqualified welding seam repair witnesses.
Supervision welding quality adopts field inspection and welding process video inspection, specifically includes: 21) checking a welding process file before installation and welding, verifying the welding capability of a welder, and verifying the capability of a welding material library and welding equipment; 22) carrying out inspection and rechecking on the condition of on-site personnel certification, the recovery record of welding material acceptance, the drying and heat preservation condition, the welding environment, equipment and process parameters; 23) inspecting and supervising the quality inspection process of the welding seam; 24) checking and verifying the welding quality; 25) and (5) proving the repair of unqualified welding seams.
The concrete operations of checking the welding quality of the operated CB2 steel castings and carrying out aging rating in the step 3) are as follows:
31) monitoring and checking in-service metal; 32) monitoring the crack excavation and repair side stations; 33) and (3) aging and rating the metallographic structure, wherein the aging and rating process of the metallographic structure comprises the following specific steps: 311) aging and grading the metallographic structure; 312) the aging organization supervises the operation and treatment measures.
Example one
The specific process of this embodiment is as follows:
first, the manufacturing quality is tested in the factory
The on-site inspection and the file witness monitoring mode are adopted to carry out the factory check of the CB2 steel casting, and the method comprises the following steps:
the incoming plant rechecking of CB2 steel castings, the inspection content comprises: 11) performing macroscopic inspection; 12) testing a spectrum; 13) measuring the wall thickness; 14) nondestructive testing; 15) testing hardness; 16) metallographic examination and the like, wherein the examination focuses on a pouring gate, a dead head, a section mutation part, a bolt inner hole wall and the like.
The acceptance of the CB2 steel casting, wherein the content of the acceptance audit file comprises: 21) product quality certificate, 22) commercial inspection qualification of imported steel castings, 23) technical data (including: drawings, material brands, blank manufacturers, chemical compositions, blank smelting, casting and heat treatment processes, mechanical properties, metallographic structures, nondestructive testing, repair welding, heat treatment records, and the like).
Second, installation welding quality supervision
The method for monitoring the installation and welding quality of the CB2 steel castings by adopting a field inspection and file witness monitoring mode comprises the following steps:
1. pre-welding inspection and verification, the inspection and verification contents comprise:
11) checking the welding process file before installing and welding;
12) and verifying the welding capacity of the personnel, wherein the verification content comprises the following steps: 2a) personnel qualifications, such as a welder's certificate, heat treatment, non-destructive personnel, and physico-chemical personnel certificate; 2b) and recording the pre-post exercise of the welder and the test of the welding capability.
13) The welding material library and the welding equipment capability verification comprise the following verification contents: 3a) checking records and validity periods of production equipment and instruments such as an electric welding machine, a heat treatment heating element, a thermocouple, a compensation lead, a temperature control cabinet, a temperature measuring instrument and the like; 3b) the verification certificates and the validity periods of nondestructive inspection equipment and physical and chemical inspection instruments; 3c) a welding material library management system, a welding material library thermometer and hygrometer monitoring record, a welding material quality certificate and a rechecking report, and a welding material barrel receiving record.
2. And polling, wherein the inspection content comprises:
21) the situation of on-site personnel warranty;
22) the welding material is used for recording the recovery record, drying and heat preservation conditions;
23) welding environment, including windproof, moisture-proof, rain-proof, snow-proof measures and ambient temperature;
24) equipment and process parameters.
3. Monitoring the inspection process, wherein the monitoring comprises the inspection records and reports of weld quality such as permeation, rays, ultrasound, magnetic powder and the like, and the examination of the hardness and metallographic structure inspection results;
4. the welding quality is checked and verified, and the work comprises the following steps: 41) checking the appearance quality of the welding seam; 42) checking the quality of the welding seam by spot check, wherein the content comprises 4a) spectrum detection; 4b) nondestructive testing; 4c) performing hardness and metallographic examination;
5. the repair witnesses of unqualified welding seams comprise the following steps:
51) the processing condition of the repair defect is witnessed on site;
52) monitoring the inspection condition of the repair quality;
53) and (3) verifying the quality of the repaired welding seam: 5a) nondestructive detection of welding seams; 5b) testing the hardness; c) and (6) metallographic examination.
Third, running supervision management and aging rating
The method for developing the operation supervision management and the aging rating of the CB2 steel casting by adopting a field inspection and side station supervision mode comprises the following steps:
1. the in-service metal supervision and inspection comprises the following steps:
11) visual inspection, wherein the high-temperature variable cross section and the bolt hole part are inspected for the existence of mechanical damage, cracks and the like; 12) nondestructive testing; 13) testing hardness; 14) and (6) carrying out metallographic examination.
2. Crack removal and repair side station supervision, comprising:
21) verifying the state before repairing, performing ultrasonic detection on the excavated part of the crack, and performing magnetic powder or penetration detection on the surface;
22) controlling the quality of the repair welding process;
23) rechecking the quality of the repaired welding line, carrying out ultrasonic inspection on the repaired position, carrying out magnetic powder or penetration detection on the surface, and carrying out hardness test and metallographic phase inspection on the repaired welding position;
3. a metallographic structure aging rating comprising:
31) and (3) ageing rating, namely after the CB2 steel casting runs for 10 ten thousand hours, carrying out ageing rating by a method which comprehensively considers the lath structure evolution of the martensite structure of the CB2 steel and the distribution condition of carbides in different regions, and dividing the ageing rating into 5 grades from an original state to complete ageing, wherein the 5 grades are respectively 1 grade to 5 grades of ageing.
32) The aging organization supervises operation and treatment measures, which comprise: 3a) when the aging of the metallographic structure of the CB2 steel reaches 4 grades and the hardness is obviously reduced, the material evaluation and the service life evaluation are carried out; 3b) when the aging of the metallographic structure of the CB2 steel reaches 5 grades and the hardness is remarkably reduced, the CB2 steel casting is replaced.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A CB2 steel casting running state supervision and management method is characterized by comprising the following steps:
1) the quality of the CB2 steel castings entering the factory is checked, the checking result is recorded into a central control machine, and the checking result is distributed to central control machines of other production workshops;
2) rechecking the quality inspection result recorded into the central control machine, welding the CB2 steel casting qualified after rechecking, detecting the welding quality, inputting the detection result of the welding quality into the central control machine, and then sending the detection result into the central control machine of other production workshops; meanwhile, video information in the welding process is collected and then sent to a central control machine of other production workshops;
3) and the welding quality of the running CB2 steel castings is periodically checked and subjected to aging rating, and the detection and aging rating results are recorded into a handheld terminal and then are issued to a central control machine of each production workshop.
2. The method for supervising and managing the running state of the CB2 steel casting according to claim 1, wherein in the step 1), the auditing result is issued to a central control machine of other production workshops through a local area network.
3. The method for supervising and managing the running state of the CB2 steel casting according to claim 1, wherein in the step 3), the detection and aging rating results are recorded into a handheld terminal and then are issued to a central control machine of each production workshop through a local area network.
4. The CB2 steel casting running state supervision and management method according to claim 1, characterized in that the specific operation of step 1) is as follows:
11) rechecking the CB2 steel castings entering the factory;
12) the quality certificate of the CB2 steel casting, the commodity inspection qualification certificate of the CB2 steel casting and technical data which enter the factory are checked, and then the check result is input into a central control machine.
5. The CB2 steel casting running state supervision and management method according to claim 4, characterized in that, the specific operation of step 11) is as follows: and carrying out macroscopic inspection, wall thickness measurement, nondestructive testing, hardness testing and metallographic inspection on the CB2 steel castings entering the factory.
6. The method for supervising and managing the running state of the CB2 steel casting according to claim 1, wherein the detection of the welding quality in the step 2) comprises pre-welding inspection and verification, routing inspection, inspection process supervision, welding quality check verification and unqualified welding seam repair witnesses.
7. The CB2 steel casting running state supervision and management method according to claim 1, wherein the supervision of welding quality adopts field inspection and welding process video inspection, and the supervision of welding quality comprises the following steps:
21) checking a welding process file before installation and welding, verifying the welding capability of a welder, and verifying the capability of a welding material library and welding equipment;
22) carrying out inspection and rechecking on the condition of on-site personnel certification, the recovery record of welding material acceptance, the drying and heat preservation condition, the welding environment, equipment and process parameters;
23) inspecting and supervising the quality inspection process of the welding seam;
24) checking and verifying the welding quality;
25) and (5) proving the repair of unqualified welding seams.
8. The supervision and management method for the operating condition of the CB2 steel casting according to the claim 1, wherein the concrete operations of checking the welding quality and the aging rating of the operating CB2 steel casting in the step 3) are as follows:
31) monitoring and checking in-service metal;
32) removing cracks and repairing side stations for supervision;
33) and (5) aging and grading the metallographic structure.
9. The method for supervising and managing the running state of the CB2 steel casting according to the claim 1, wherein the concrete process of the metallographic structure aging rating comprises the following steps:
311) aging and grading the metallographic structure;
312) the aging organization supervises the operation and treatment measures.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210602660.1A CN115018302A (en) | 2022-05-30 | 2022-05-30 | CB2 steel casting running state supervision and management method |
| PCT/CN2022/143097 WO2023231407A1 (en) | 2022-05-30 | 2022-12-29 | Cb2 cast steel part operation state supervision and management method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210602660.1A CN115018302A (en) | 2022-05-30 | 2022-05-30 | CB2 steel casting running state supervision and management method |
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| CN115018302A true CN115018302A (en) | 2022-09-06 |
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| CN202210602660.1A Pending CN115018302A (en) | 2022-05-30 | 2022-05-30 | CB2 steel casting running state supervision and management method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231407A1 (en) * | 2022-05-30 | 2023-12-07 | 西安热工研究院有限公司 | Cb2 cast steel part operation state supervision and management method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7873495B2 (en) * | 2009-02-24 | 2011-01-18 | Inspectech Corporation | Welding quality control and monitoring system |
| CN105234598A (en) * | 2015-10-19 | 2016-01-13 | 东方电气集团东方汽轮机有限公司 | Material repair welding method of CB2 casting of ultra-supercritical turbine unit |
| CN107515953A (en) * | 2017-09-27 | 2017-12-26 | 武汉龙谷科尔技术有限公司 | One kind welding overall process quality tracing and analysis system |
| CN109307630B (en) * | 2018-09-30 | 2021-02-19 | 中国大唐集团科学技术研究院有限公司华中分公司 | Aging rating method of 15Cr1Mo1V steel for steam pipeline of thermal power unit based on-site hardness and metallographic structure detection |
| CN111340258A (en) * | 2020-03-13 | 2020-06-26 | 新兴铸管股份有限公司 | Cast tube product quality management method based on Internet |
| CN112008195A (en) * | 2020-09-04 | 2020-12-01 | 杨虹 | Research and development of construction process for controlling welding cracks of composite board |
| CN115018302A (en) * | 2022-05-30 | 2022-09-06 | 西安热工研究院有限公司 | CB2 steel casting running state supervision and management method |
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- 2022-12-29 WO PCT/CN2022/143097 patent/WO2023231407A1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023231407A1 (en) * | 2022-05-30 | 2023-12-07 | 西安热工研究院有限公司 | Cb2 cast steel part operation state supervision and management method |
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