CN210817749U - Withstand voltage shell raw materials rod - Google Patents
Withstand voltage shell raw materials rod Download PDFInfo
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- CN210817749U CN210817749U CN201921275428.1U CN201921275428U CN210817749U CN 210817749 U CN210817749 U CN 210817749U CN 201921275428 U CN201921275428 U CN 201921275428U CN 210817749 U CN210817749 U CN 210817749U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses a withstand voltage shell raw material rod, raw material rod includes the forging rod, the forging rod includes first excellent section, the excellent section of second and the excellent section of third, first excellent section, the excellent section of second and the excellent section of third derive from same one forging rod: and cutting the forged rod to obtain three adjacent rod sections along the axis of the forged rod, wherein the first rod section, the second rod section and the third rod section are different rod sections in the three rod sections. The obtaining method is the obtaining method of the raw material bar. The raw material bar is adopted to produce the pressure-resistant shell, so that the probability of unqualified pressure-resistant shell products can be reduced, the production efficiency of the pressure-resistant shell is improved, and the guarantee is provided for on-time delivery.
Description
Technical Field
The utility model relates to a nuclear reactor control rod drive mechanism technical field especially relates to a withstand voltage shell raw material rod.
Background
Control rod drive mechanisms are important components in nuclear reactors. If the control rod driving mechanism of the pressurized water reactor is arranged on the top cover of the pressure vessel of the reactor, the control rod driving mechanism can drive the control rod assembly to move up and down in the reactor core according to the instruction and keep the control rod assembly at the instruction height; the control assembly can be released through power failure, so that the control assembly can be quickly inserted into the reactor core under the action of gravity to complete the functions of starting, power regulation, power maintenance, normal shutdown, accident shutdown and the like of the reactor. Meanwhile, the pressure housing of the control rod drive mechanism is an integral part of the reactor pressure boundary.
At present, the second generation (including second generation improved generation) pressurized water reactor nuclear power station in international active service mostly adopts an L-106A type and derivative type (hereinafter referred to as A type) control rod driving mechanism, and the third generation pressurized water reactor nuclear power station in construction mostly adopts an L-106B type and derivative type (hereinafter referred to as B type) control rod driving mechanism. The fixing modes of the A-type control rod driving mechanism and the B-type control rod driving mechanism on the reactor top are that the metal penetrating piece is inserted into the reactor pressure vessel top cover and welded to form a whole with the reactor pressure vessel top cover. The pressure shell of the control rod driving mechanism belongs to the pressure boundary of a reactor primary circuit and plays a role in supporting the driving mechanism and bearing working load. Thus, the pressure boundary of the control rod drive mechanism may also be collectively referred to as a pressure housing, typically comprising a seal housing assembly and a drive rod travel thimble assembly.
Compared with the pressure shell of the B-type control rod driving mechanism, although the lower omega welding seam is cancelled, the omega welding seam existing at the upper end is still the weak position of the whole pressure shell, and the risk of leakage and the like caused by cracks generated by stress corrosion exists.
Just because omega welding seam has the risk problem when using, to the manufacturing of pressure housing, adopt the forging bar of taking as raw materials to process the pressure housing barrel and the omega semi-ring of tip (the omega semi-ring butt joint obtains omega welding seam after welding on two parts), before accomplishing final omega welding seam welding, need to carry out PT to omega semi-ring and detect. However, once the PT detection result is unqualified, the delivery cycle of the manufacturer is affected, huge economic risk is brought to the pressure shell user, and the production efficiency of the manufacturer is also greatly affected.
SUMMERY OF THE UTILITY MODEL
Because the risk problem that omega welding seam exists when using that provides to the aforesaid, to withstand voltage shell production, will bring risk, influence to produce the technical problem who imitates if the product is unqualified, the utility model provides a withstand voltage shell raw material rod. The raw material bar is adopted to produce the pressure-resistant shell, so that the probability of unqualified pressure-resistant shell products can be reduced, the production efficiency of the pressure-resistant shell is improved, and the guarantee is provided for on-time delivery.
To the above problem, the utility model provides a pair of withstand voltage shell raw material rod solves the problem through following technical essential: the utility model provides a withstand voltage shell raw material rod, includes the forging rod, the forging rod includes first excellent section, second excellent section and third excellent section, first excellent section, second excellent section and third excellent section derive from same forging rod: and cutting the forged rod to obtain three adjacent rod sections along the axis of the forged rod, wherein the first rod section, the second rod section and the third rod section are different rod sections in the three rod sections.
As described above, in the prior art, in order to ensure the quality of the subsequent Ω welding seam, after the pressure housing is manufactured, the Ω half ring at the upper end of the pressure housing needs to be subjected to PT detection, and the pressure housing which passes the PT detection is used in the subsequent assembly, so that the pressure housing has a certain rejection rate in manufacturing for the benefit of the operation reliability and the service life of the control rod driving mechanism. Meanwhile, the pressure-resistant shell is different from the traditional part manufacturing, and has the characteristics of long manufacturing period and high manufacturing cost. The impact on the pressure housing user can be significant once the pressure housing is scrapped.
In the scheme, the first rod section, the second rod section and the third rod section are three adjacent rod sections along the axis of the forged rod, when the test device is specifically implemented, two of the rod sections are used as target raw material rods for manufacturing the pressure-resistant shell, the other rod section is used as a test rod, and the test rod is a rod section between the two target raw material rods on the original forged rod. Therefore, the length of the selected forged rod for cutting is greater than the sum of the lengths of the raw material rods required by the two pressure shells, and the part of the forged rod with the length greater than the sum is used for matching the slotting cutting amount and the length of the test rod during cutting. And aiming at the length of the test rod, the specific length is satisfied that the omega semi-ring with the same size as the target omega semi-ring can be processed at the end part of the test rod.
In specific implementation, if the first slot cutting and the second slot cutting are performed on the same forged rod, three adjacent rod sections can be obtained, the test rod is a forged rod section between the first slot and the second slot, and the other two rod sections are used as target raw material rods. Taking a test rod, processing an omega semi-ring at one end of the test rod, and carrying out PT detection on the omega semi-ring after the omega semi-ring is processed; if the PT testing result satisfies the requirement, take two other stick sections as withstand voltage shell feed rod, and withstand voltage shell feed rod and go up the one end that is used for processing omega semi-ring and do: one end of each raw material rod is connected with the test rod. As a person skilled in the art, the connected end is the end of the raw material rod and the end of the test rod where the omega-shaped semi-ring is processed come from the same slot when the forged rod is cut to obtain the test rod.
This scheme of adoption, when omega semi-ring PT detection quality on the test bar satisfies the requirement, because the region that is used for processing omega semi-ring on the test bar is close with the regional position on the forging bar of corresponding raw materials stick tip, omega semi-ring PT testing result on the event test bar has good guiding meaning to the tissue defect prejudgement that the raw materials stick corresponds the end tip, realize organizing the defect detection through the test bar, whether accomplish the raw materials stick and can be used for withstand voltage shell raw materials rod prejudgement, through obtaining more reliable raw materials rod, reach and reduce withstand voltage shell product disqualification rate, reach and improve withstand voltage shell production efficiency, provide the guarantee for delivery on time, reduce the purpose of withstand voltage shell manufacturing cost.
The forging rod that carries out the later stage cutting after for original forging rod not forging the shaping, because the tissue defect of forging rod middle part position is less than the tissue defect of tip position under general condition, so adopt this scheme, the middle part region that has practically adopted first-selected forging rod is used for processing the omega semi-ring on the withstand voltage shell, it has the prior measure of detecting of tissue defect to carry out withstand voltage shell raw material stick when selecting simultaneously, so itself when carrying out raw material stick and selecting, have more probably to obtain the processing region that tissue defect satisfies omega semi-ring processing, can obtain two raw material rods that satisfy the processing requirement. The method is characterized in that the target rod of the raw material rod is selected, the reject ratio of the pressure shell product can be reduced, and the processing efficiency is improved.
The further technical proposal of the pressure-resistant shell raw material bar is as follows:
specifically, consider that current forging rod factory length, be convenient for transport and improve the problem of forging rod utilization ratio, set up to: the forged bar is cut into: cut the forging rod into three sections, by the one end to the other end of forging rod, do in proper order: a first rod segment, a second rod segment, and a third rod segment. In the scheme, three rod segments, namely a first rod segment, a second rod segment and a third rod segment, are obtained by performing first slot cutting and second slot cutting. As can be obtained by the above description: the second rod section is a rod section in the middle area of the forged rod and serves as a test rod.
The scheme also discloses a method for obtaining the pressure-resistant shell raw material bar, which comprises the steps of adopting a forged bar, cutting the forged bar to obtain three adjacent bar sections along the axis of the forged bar, wherein the three bar sections are a first bar section, a second bar section and a third bar section respectively;
taking a bar section in the middle of the three bar sections along the axial direction of the forged bar as a test bar, processing an omega semi-ring at one end of the test bar, and carrying out PT detection on the omega semi-ring after the omega semi-ring is processed;
if the PT testing result satisfies the requirement, take two other stick sections as withstand voltage shell feed rod, and withstand voltage shell feed rod and go up the one end that is used for processing omega semi-ring and do: one end of each raw material rod is connected with the test rod. The obtaining method is used for obtaining the raw material rod for processing the pressure-resistant shell, whether the raw material rod can be used for pre-judging the raw material rod of the pressure-resistant shell or not is completed through detecting the tissue defects of the test rod, and the purposes of reducing the product reject ratio of the pressure-resistant shell, improving the production efficiency of the pressure-resistant shell, providing guarantee for delivery on time and reducing the production cost of the pressure-resistant shell are achieved through obtaining the more reliable raw material rod. As a person skilled in the art, in the case of using the Ω -shaped half ring on one side of the test rod to determine whether the other two rod segments meet the rod selection requirement, considering the correspondence between the tissue defect at the end of the test rod and the tissue defect of the material at the end of the other two rod segments, it is preferable to set: the rod section as the test rod is as short as possible, so the length of the rod section as the test rod is set to meet the requirement that the omega semi-ring is processed on the rod section, for example, the length value of the omega semi-ring in the axial direction of the pressure-resistant shell is N, and on the basis of N, 2-5mm is added for clamping when the test rod is processed.
For further guaranteeing the processingquality of omega semi-ring on the raw materials stick, set up to: processing omega semi-rings at two ends of the test rod, and carrying out PT detection on the omega semi-rings after the omega semi-rings are processed;
to satisfying the omega semi-ring that PT detected the requirement, define this omega semi-ring and be located the Z end of test bar, take the stick section adjacent with Z end as withstand voltage shell raw material stick, and withstand voltage shell raw material stick and go up the one end that is used for processing omega semi-ring and be: when cutting is carried out, the Z end and the Z end are derived from one end of the same slot. In this scheme, all process omega semi-ring to the both ends of the stick section as the test bar promptly, if carry out first slot cutting and second slot cutting to the forging rod, first slot both sides are first stick section and second stick section respectively, and second slot both ends are second stick section and third stick section respectively, if the surface quality of the omega semi-ring that second stick section one of them side was processed meets the requirements, this side of second stick section and the A end as the feed rod derive from same slot, like this, when carrying out withstand voltage shell processing, use A end processing omega semi-ring can.
As a specific cutting mode of the forged rod, the method comprises the following steps: the forged bar is cut into: the forged bar is cut into three sections and the second bar section is a bar section of the middle region of the forged bar.
For improving the utilization rate of the forging rod, the method comprises the following steps: if the PT detection result of the test rod does not meet the requirement, taking the other two test rod sections as re-test rod sections, processing omega semi-rings at the end parts of the re-test rod sections, wherein one end of each omega semi-ring used for processing the corresponding omega semi-ring is the end, far away from the test rod, of each rod section, performing PT detection on the omega semi-rings on the re-test rod sections, and taking the re-test rod sections as pressure-resistant shell raw material rods if the PT detection result of the omega semi-rings on the re-test rod sections meets the requirement. The scheme is as follows: and when the PT detection of the omega-shaped half ring on the test rod is unqualified, carrying out omega-shaped half ring processing on the other end of the target raw material rod, carrying out PT detection on the omega-shaped half ring on the target raw material rod, and then judging whether the target raw material rod is used as a final raw material rod for processing the pressure shell according to a detection result.
For improving the utilization rate of the forging rod, the method comprises the following steps: aiming at the omega semi-ring which does not meet the PT detection requirement, defining the omega semi-ring to be positioned at the T end of the test rod, and taking a rod section adjacent to the T end as a re-detection rod section;
processing an omega semi-ring on the end part of the re-detection rod section, wherein an A end and a B end are respectively arranged at two ends of the re-detection rod section, the A end and the T end are from the same cutting seam when the forged rod is cut, and the B end is one end of the re-detection rod section for processing the omega semi-ring;
and (4) carrying out PT detection on the omega semi-ring on the re-detection rod section, and taking the re-detection rod section as a pressure shell raw material rod if the PT detection result of the omega semi-ring on the re-detection rod section meets the requirement. The scheme is as follows: and when the PT detection of the omega-shaped half ring on the test rod is unqualified, carrying out omega-shaped half ring processing on the other end of the target raw material rod, carrying out PT detection on the omega-shaped half ring on the target raw material rod, and then judging whether the target raw material rod is used as a final raw material rod for processing the pressure shell according to a detection result.
The utility model discloses following beneficial effect has:
this scheme of adoption, when omega semi-ring PT detection quality on the test bar satisfies the requirement, because the region that is used for processing omega semi-ring on the test bar is close with the regional position on the forging bar of corresponding raw materials stick tip, omega semi-ring PT testing result on the event test bar has good guiding meaning to the tissue defect prejudgement that the raw materials stick corresponds the end tip, realize organizing the defect detection through the test bar, whether accomplish the raw materials stick and can be used for withstand voltage shell raw materials rod prejudgement, through obtaining more reliable raw materials rod, reach and reduce withstand voltage shell product disqualification rate, reach and improve withstand voltage shell production efficiency, provide the guarantee for delivery on time, reduce the purpose of withstand voltage shell manufacturing cost.
The forging rod that carries out the later stage cutting after for original forging rod not forging the shaping, because the tissue defect of forging rod middle part position is less than the tissue defect of tip position under general condition, so adopt this scheme, the middle part region that has practically adopted first-selected forging rod is used for processing the omega semi-ring on the withstand voltage shell, it has the prior measure of detecting of tissue defect to carry out withstand voltage shell raw material stick when selecting simultaneously, so itself when carrying out raw material stick and selecting, have more probably to obtain the processing region that tissue defect satisfies omega semi-ring processing, can obtain two raw material rods that satisfy the processing requirement. The method is characterized in that the target rod of the raw material rod is selected, the reject ratio of the pressure shell product can be reduced, and the processing efficiency is improved.
Drawings
FIG. 1 is a front, top or bottom view of a forged bar according to an embodiment of the present invention, showing the position of the corresponding slots on the axis of the forged bar and the relative position of the obtained specific bar segments on the forged bar;
fig. 2 is a perspective view of the cut forged rod in a specific embodiment of obtaining the pressure-resistant shell raw material bar, the schematic view is an axonometric view for reflecting the relative position of the obtained specific rod segment on the axis of the forged rod along the axis direction of the forged rod.
The labels in the figure are respectively: 1. the bar comprises a first bar section, a second bar section, a third bar section, a first slot, a second slot and a third slot.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:
example 1:
as shown in fig. 1 and 2, a pressure shell raw material bar comprises a forged bar, wherein the forged bar comprises a first bar section, a second bar section and a third bar section, and the first bar section, the second bar section and the third bar section are derived from the same forged bar: and cutting the forged rod to obtain three adjacent rod sections along the axis of the forged rod, wherein the first rod section, the second rod section and the third rod section are different rod sections in the three rod sections.
As described above, in the prior art, in order to ensure the quality of the subsequent Ω welding seam, after the pressure housing is manufactured, the Ω half ring at the upper end of the pressure housing needs to be subjected to PT detection, and the pressure housing which passes the PT detection is used in the subsequent assembly, so that the pressure housing has a certain rejection rate in manufacturing for the benefit of the operation reliability and the service life of the control rod driving mechanism. Meanwhile, the pressure-resistant shell is different from the traditional part manufacturing, and has the characteristics of long manufacturing period and high manufacturing cost. The impact on the pressure housing user can be significant once the pressure housing is scrapped.
In the scheme, the first rod section, the second rod section and the third rod section are three adjacent rod sections along the axis of the forged rod, when the test device is specifically implemented, two of the rod sections are used as target raw material rods for manufacturing the pressure-resistant shell, the other rod section is used as a test rod, and the test rod is a rod section between the two target raw material rods on the original forged rod. Therefore, the length of the selected forged rod for cutting is greater than the sum of the lengths of the raw material rods required by the two pressure shells, and the part of the forged rod with the length greater than the sum is used for matching the slotting cutting amount and the length of the test rod during cutting. And aiming at the length of the test rod, the specific length is satisfied that the omega semi-ring with the same size as the target omega semi-ring can be processed at the end part of the test rod.
In specific implementation, if the first slot cutting and the second slot cutting are performed on the same forged rod, three adjacent rod sections can be obtained, the test rod is a forged rod section between the first slot and the second slot, and the other two rod sections are used as target raw material rods. Taking a test rod, processing an omega semi-ring at one end of the test rod, and carrying out PT detection on the omega semi-ring after the omega semi-ring is processed; if the PT testing result satisfies the requirement, take two other stick sections as withstand voltage shell feed rod, and withstand voltage shell feed rod and go up the one end that is used for processing omega semi-ring and do: one end of each raw material rod is connected with the test rod. As a person skilled in the art, the connected end is the end of the raw material rod and the end of the test rod where the omega-shaped semi-ring is processed come from the same slot when the forged rod is cut to obtain the test rod.
This scheme of adoption, when omega semi-ring PT detection quality on the test bar satisfies the requirement, because the region that is used for processing omega semi-ring on the test bar is close with the regional position on the forging bar of corresponding raw materials stick tip, omega semi-ring PT testing result on the event test bar has good guiding meaning to the tissue defect prejudgement that the raw materials stick corresponds the end tip, realize organizing the defect detection through the test bar, whether accomplish the raw materials stick and can be used for withstand voltage shell raw materials rod prejudgement, through obtaining more reliable raw materials rod, reach and reduce withstand voltage shell product disqualification rate, reach and improve withstand voltage shell production efficiency, provide the guarantee for delivery on time, reduce the purpose of withstand voltage shell manufacturing cost.
The forging rod that carries out the later stage cutting after for original forging rod not forging the shaping, because the tissue defect of forging rod middle part position is less than the tissue defect of tip position under general condition, so adopt this scheme, the middle part region that has practically adopted first-selected forging rod is used for processing the omega semi-ring on the withstand voltage shell, it has the prior measure of detecting of tissue defect to carry out withstand voltage shell raw material stick when selecting simultaneously, so itself when carrying out raw material stick and selecting, have more probably to obtain the processing region that tissue defect satisfies omega semi-ring processing, can obtain two raw material rods that satisfy the processing requirement. The method is characterized in that the target rod of the raw material rod is selected, the reject ratio of the pressure shell product can be reduced, and the processing efficiency is improved.
Example 2:
the embodiment is further defined on the basis of embodiment 1, and specifically, considering the problems of factory length, convenience in transportation and improvement of utilization rate of the existing forged rod, the method is set as follows: the forged bar is cut into: cut the forging rod into three sections, by the one end to the other end of forging rod, do in proper order: a first rod segment, a second rod segment, and a third rod segment. In the scheme, three rod segments, namely a first rod segment, a second rod segment and a third rod segment, are obtained by performing first slot cutting and second slot cutting. As can be obtained by the above description: the second rod section is a rod section in the middle area of the forged rod and serves as a test rod.
Example 3:
the embodiment is further limited on the basis of any one of the technical solutions provided in embodiment 1 or embodiment 2, and the embodiment discloses a method for obtaining a pressure shell raw material bar, which includes that a forged bar is adopted and cut to obtain three adjacent bar sections along the axis of the forged bar, wherein the three bar sections are a first bar section, a second bar section and a third bar section;
taking a bar section in the middle of the three bar sections along the axial direction of the forged bar as a test bar, processing an omega semi-ring at one end of the test bar, and carrying out PT detection on the omega semi-ring after the omega semi-ring is processed;
if the PT testing result satisfies the requirement, take two other stick sections as withstand voltage shell feed rod, and withstand voltage shell feed rod and go up the one end that is used for processing omega semi-ring and do: one end of each raw material rod is connected with the test rod. The obtaining method is used for obtaining the raw material rod for processing the pressure-resistant shell, whether the raw material rod can be used for pre-judging the raw material rod of the pressure-resistant shell or not is completed through detecting the tissue defects of the test rod, and the purposes of reducing the product reject ratio of the pressure-resistant shell, improving the production efficiency of the pressure-resistant shell, providing guarantee for delivery on time and reducing the production cost of the pressure-resistant shell are achieved through obtaining the more reliable raw material rod. As a person skilled in the art, in the case of using the Ω -shaped half ring on one side of the test rod to determine whether the other two rod segments meet the rod selection requirement, considering the correspondence between the tissue defect at the end of the test rod and the tissue defect of the material at the end of the other two rod segments, it is preferable to set: the rod section as the test rod is as short as possible, so the length of the rod section as the test rod is set to meet the requirement that the omega semi-ring is processed on the rod section, for example, the length value of the omega semi-ring in the axial direction of the pressure-resistant shell is N, and on the basis of N, 2-5mm is added for clamping when the test rod is processed.
Further, for improving the utilization ratio of the forging rod, the forging rod is set as follows: if the PT detection result of the test rod does not meet the requirement, taking the other two test rod sections as re-test rod sections, processing omega semi-rings at the end parts of the re-test rod sections, wherein one end of each omega semi-ring used for processing the corresponding omega semi-ring is the end, far away from the test rod, of each rod section, performing PT detection on the omega semi-rings on the re-test rod sections, and taking the re-test rod sections as pressure-resistant shell raw material rods if the PT detection result of the omega semi-rings on the re-test rod sections meets the requirement. The scheme is as follows: and when the PT detection of the omega-shaped half ring on the test rod is unqualified, carrying out omega-shaped half ring processing on the other end of the target raw material rod, carrying out PT detection on the omega-shaped half ring on the target raw material rod, and then judging whether the target raw material rod is used as a final raw material rod for processing the pressure shell according to a detection result.
Example 4:
the embodiment is further limited on the basis of embodiment 1 or 2, a forged rod is adopted, and is cut to obtain three adjacent rod sections along the axis of the forged rod, wherein the three rod sections are a first rod section, a second rod section and a third rod section respectively;
taking a bar section in the middle of the three bar sections along the axial direction of the forged bar as a test bar, processing an omega semi-ring at one end of the test bar, and carrying out PT detection on the omega semi-ring after the omega semi-ring is processed;
if the PT testing result satisfies the requirement, take two other stick sections as withstand voltage shell feed rod, and withstand voltage shell feed rod and go up the one end that is used for processing omega semi-ring and do: one end of each raw material rod is connected with the test rod.
For further guaranteeing the processingquality of omega semi-ring on the raw materials stick, set up to: processing omega semi-rings at two ends of the test rod, and carrying out PT detection on the omega semi-rings after the omega semi-rings are processed;
to satisfying the omega semi-ring that PT detected the requirement, define this omega semi-ring and be located the Z end of test bar, take the stick section adjacent with Z end as withstand voltage shell raw material stick, and withstand voltage shell raw material stick and go up the one end that is used for processing omega semi-ring and be: when cutting is carried out, the Z end and the Z end are derived from one end of the same slot. In this scheme, all process omega semi-ring to the both ends of the stick section as the test bar promptly, if carry out first slot cutting and second slot cutting to the forging rod, first slot both sides are first stick section and second stick section respectively, and second slot both ends are second stick section and third stick section respectively, if the surface quality of the omega semi-ring that second stick section one of them side was processed meets the requirements, this side of second stick section and the A end as the feed rod derive from same slot, like this, when carrying out withstand voltage shell processing, use A end processing omega semi-ring can.
As a specific cutting mode of the forged rod, the method comprises the following steps: the forged bar is cut into: the forged bar is cut into three sections and the second bar section is a bar section of the middle region of the forged bar.
For improving the utilization rate of the forging rod, the method comprises the following steps: aiming at the omega semi-ring which does not meet the PT detection requirement, defining the omega semi-ring to be positioned at the T end of the test rod, and taking a rod section adjacent to the T end as a re-detection rod section;
processing an omega semi-ring on the end part of the re-detection rod section, wherein an A end and a B end are respectively arranged at two ends of the re-detection rod section, the A end and the T end are from the same cutting seam when the forged rod is cut, and the B end is one end of the re-detection rod section for processing the omega semi-ring;
and (4) carrying out PT detection on the omega semi-ring on the re-detection rod section, and taking the re-detection rod section as a pressure shell raw material rod if the PT detection result of the omega semi-ring on the re-detection rod section meets the requirement. The scheme is as follows: and when the PT detection of the omega-shaped half ring on the test rod is unqualified, carrying out omega-shaped half ring processing on the other end of the target raw material rod, carrying out PT detection on the omega-shaped half ring on the target raw material rod, and then judging whether the target raw material rod is used as a final raw material rod for processing the pressure shell according to a detection result.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.
Claims (2)
1. The utility model provides a withstand voltage shell raw material rod, includes the forging rod, its characterized in that, the forging rod includes first stick section (1), second stick section (2) and third stick section (3), first stick section (1), second stick section (2) and third stick section (3) derive from the forging rod that same root was cut, just first stick section (1), second stick section (2) and third stick section (3) are along the adjacent three-section stick section of forging rod axis.
2. The pressure shell raw material bar of claim 1, wherein the first bar segment (1), the second bar segment (2) and the third bar segment (3) are derived from the same forged bar cut into three bar segments.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921275428.1U CN210817749U (en) | 2019-08-07 | 2019-08-07 | Withstand voltage shell raw materials rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921275428.1U CN210817749U (en) | 2019-08-07 | 2019-08-07 | Withstand voltage shell raw materials rod |
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| CN210817749U true CN210817749U (en) | 2020-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405279A (en) * | 2019-08-07 | 2019-11-05 | 四川华都核设备制造有限公司 | A kind of acquisition methods of pneumatic shell raw bar material and the bar |
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2019
- 2019-08-07 CN CN201921275428.1U patent/CN210817749U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405279A (en) * | 2019-08-07 | 2019-11-05 | 四川华都核设备制造有限公司 | A kind of acquisition methods of pneumatic shell raw bar material and the bar |
| CN110405279B (en) * | 2019-08-07 | 2024-07-09 | 四川华都核设备制造有限公司 | Pressure shell raw material bar and acquisition method thereof |
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