Superconducting single-core rod surface quality optimization and rapid forming process

Abstract

The invention discloses a superconductive single-core rod surface quality optimization and rapid forming process. The superconductive single-core rod surface quality optimization and rapid forming process comprises the steps that a superconductive single-core rod is straightened through a horizontal straightening roller and a vertical straightening roller; the laser detection equipment carries out straightening detection on the superconducting single core rod; the laser meter counter and the fixed-length cutting equipment are used for carrying out fixed-length cutting on the superconducting single-core rod; the stripping die is used for stripping the superconducting single-core rod; and polishing equipment arranged in the same axial direction of the production line is used for polishing and repairing the superconducting single-core rod. By improving straightening and automatic fixed-length cutting-off, the non-straightness of the single core rod is improved, the scaling procedure is facilitated, meanwhile, the procedure of manual straightening after fixed-length cutting-off in the original process is avoided, the surface quality of the single core rod is improved, impurities brought into the surface of the single core rod and the defects caused by slight collision are basically eliminated, and the production efficiency is improved. The production efficiency is improved, and the good surface quality of the single core rod can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of superconducting wires, and in particular to a process for optimizing the surface quality of a superconducting single core rod and rapid prototyping. Background Art

[0002] As the raw material for the production of NbTi / Cu superconducting composite ingots, the surface quality of NbTi / Cu superconducting single core rods after forming is a key factor affecting the performance of superconducting wires. If there are surface quality problems with the single core rod, it will affect the cleaning and assembly of the next process. If the defects and inclusions on the surface of the single core rod cannot be controlled in time, it will cause abnormal wire breakage and performance degradation in the final composite wire drawing process. In the existing processing technology of NbTi / Cu superconducting single core rods, there are already a large number of surface defects such as bumps and inclusions on the surface in the front-end process of forming, and the existing forming process does not have a way to deal with the surface quality problem of the single core rod, and cannot solve the surface quality problem of the single core rod; and the existing forming process is to cut to a fixed length first, and then manually straighten each single core rod, and check the surface for manual filing, which has the problem of low production efficiency. Under the existing process route, the process route for single core rod forming is immature, there are no control measures for surface quality, and the production process is inefficient and cannot meet the requirements of mass production. Summary of the invention

[0003] The embodiment of the present invention provides a superconducting single core rod surface quality optimization and rapid prototyping process, which is used to solve the problem that the existing process of prototyping in the prior art is to first cut to a fixed length, then manually straighten each single core rod, and check the surface and perform manual filing, which has low production efficiency and cannot meet the requirements of mass production.

[0004] On the one hand, an embodiment of the present invention provides a superconducting single core rod surface quality optimization and rapid prototyping process, including: Straightening the superconducting single core rod by using a plurality of horizontal straightening rollers and a plurality of vertical straightening rollers; Performing straightening detection on the superconducting single core rod by using a laser detection device; Cutting the superconducting single core rod that has passed the straightening test to a fixed length by using a laser meter and a fixed-length cutting device; Performing quantitative peeling processing on the superconducting single core rod cut to a fixed length by a peeling die; The superconducting single core rod after the peeling process is polished by a polishing device arranged in the same direction as the axial direction of the production line.

[0005] In a possible implementation, the gap width between the horizontal straightening roller and the vertical straightening roller is adjustable, and the gap width between the horizontal straightening roller and the vertical straightening roller is manually adjusted on-site or remotely.

[0006] In a possible implementation, the laser detection device performs the straightening detection of the superconducting single core rod along the axial direction of the production line, a straightening threshold is provided in the laser detection device, and the straightening detection of the superconducting single core rod is performed on the production line by self-feedback according to the straightening threshold.

[0007] In a possible implementation, the setting parameters of the laser meter counter and the cut-to-length cutting device are manually adjusted on-site or remotely, and the laser meter counter and the cut-to-length cutting device are used in conjunction.

[0008] In a possible implementation, the peeling die has a plurality of blades, and the inner diameter and shape of the blades are set according to the outer diameter data and shape of the superconducting single core rod.

[0009] In a possible implementation, the stripping process is adjusted according to a change in the copper ratio of the superconducting single core rod.

[0010] In a possible implementation, the grinding component of the grinding device is tubular, polishing mud is arranged in the tubular grinding component, and the grinding component is controlled by a motor to rotate axially.

[0011] The surface quality optimization and rapid prototyping process of a superconducting single core rod in the present invention has the following advantages: By improving straightening and automatic cutting to length, the straightness of the single core rod is improved, which is beneficial to the peeling process. At the same time, it also avoids the process of manual straightening after cutting to length in the original process, improves the surface quality of the single core rod, and basically eliminates the defects caused by inclusions and slight bumps on the surface of the single core rod, thereby improving production efficiency and ensuring good surface quality of the single core rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 A schematic diagram of a process flow of a superconducting single core rod surface quality optimization and rapid prototyping process provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] Figure 1 A schematic diagram of a process for optimizing the surface quality of a superconducting single core rod and rapid prototyping provided by an embodiment of the present invention; an embodiment of the present invention provides a process for optimizing the surface quality of a superconducting single core rod and rapid prototyping, including: Straightening the superconducting single core rod by using a plurality of horizontal straightening rollers and a plurality of vertical straightening rollers; Performing straightening detection on the superconducting single core rod by using a laser detection device; Cutting the superconducting single core rod that has passed the straightening test to a fixed length by using a laser meter and a fixed-length cutting device; Performing quantitative peeling processing on the superconducting single core rod cut to a fixed length by a peeling die; Polishing the superconducting single core rod after the peeling process by means of a polishing device arranged in the same direction as the axial direction of the production line; The gap width between the horizontal straightening roller and the vertical straightening roller is adjustable, and the gap width between the horizontal straightening roller and the vertical straightening roller is manually adjusted on-site or remotely; The laser detection device performs the straightening detection of the superconducting single core rod along the axial direction of the production line. A straightening threshold is set in the laser detection device. The straightening detection of the superconducting single core rod is performed by self-feedback on the production line according to the straightening threshold. The setting parameters of the laser meter counter and the cut-to-length cutting device are manually adjusted on-site or remotely, and the laser meter counter and the cut-to-length cutting device are used in conjunction with each other; The blades of the peeling die are provided in various ways, and the inner diameter and shape of the blades are set according to the retained data and shape of the outer diameter of the superconducting single core rod; The stripping process is adjusted according to the change of the copper ratio of the superconducting single core rod; The grinding component of the grinding equipment is tubular, polishing mud is arranged in the tubular grinding component, and the grinding component is controlled by a motor to rotate axially.

[0016] Exemplarily, the production line is provided with a plurality of horizontal straightening rollers and a plurality of vertical straightening rollers. The gap width between the horizontal straightening rollers and the vertical straightening rollers is adjusted on-site or remotely to straighten the superconducting single core rod. The length of the superconducting single core rod is controlled by a laser meter and a fixed-length cutting device, while also ensuring that the straightening effect of the superconducting single core rod does not decrease with increasing length. The superconducting single core rod after fixed-length cutting is subjected to stripping correction by a stripping die to adjust the copper ratio change, and to correct surface defects and possible impurities. The stripping treatment is set according to the copper ratio requirement of the superconducting single core rod, and the stripping die can also be replaced with tools of different inner diameters and shapes according to the shape requirement of the superconducting single core rod to achieve a suitable effect. After the superconducting single core rod is subjected to the stripping process, it is polished and ground by an axially arranged grinding device to correct the scratches on the rod surface left over from the stripping process.

[0017] In a possible embodiment, the processing rate of the peeling process is controlled within 1% to reduce the copper ratio fluctuation of the superconducting single core rod. During the peeling process, a push rod is used to push the superconducting single core rod forward, and lubrication is increased during the process. The superconducting single core rod after peeling is automatically polished, and polishing mud is used to rotate axially (in the same axial direction as the superconducting single core rod), and the surface of the superconducting single core rod is polished by friction, and the polishing effect is achieved by adjusting the rotation speed of the polishing.

[0018] In a possible embodiment, the specification of the NbTi / Cu superconducting single core rod is H25~H50mm. The width of the straightening roller is adjusted to match the diameter of the superconducting single core rod based on experience. The single core rod is driven by the straightening roller. The travel speed of the superconducting single core rod is controlled at 1~2m / min to ensure the straightening effect. The stripping mold is an alloy mold. Different specifications of stripping blades are used for superconducting single core rods of different specifications. The calculated processing rate is within 1% to reduce the fluctuation of the copper ratio of the single core rod. The stripping speed is controlled at 5m / min. Each superconducting single core rod is pushed into the tubular channel of automatic polishing by a push rod. The channel is filled with specific polishing mud. The rotation is controlled by a motor to rub the surface of the superconducting single core rod to achieve surface polishing. The rotation speed is controlled at 30r / min to obtain a superconducting single core rod with a smooth surface.

[0019] In a possible embodiment, a hexagonal NbTi / Cu superconducting single core rod with a specification of H25.0×400mm is used as the incoming material, which is a NbTi / Cu superconducting single core rod to be cut after stretching, with a specification of H25.15mm and a length of 50m. The widths of the straightening rollers in the horizontal and vertical directions are adjusted to match the diameter of the superconducting single core rod. After checking that there is no problem with the straightening effect, the superconducting single core rod is driven by the rotation of the straightening rollers, and the travel speed is controlled at 1~2m / min. The metering parameter is set to 400mm. Step 1: The straightened superconducting single core rod is driven to continue to travel by the straightening rollers, and the head starts to count meters when it passes through a laser meter. Every time it reaches 400mm, the straightening rollers stop rotating, so that the superconducting single core rod stops traveling and is automatically sawed.

[0020] After sawing, the superconducting single core rods are pushed into the peeling mold by the crawler and the push rod for peeling at a speed of 5m / min. During the peeling process, attention should be paid to adjusting the centering of the material to ensure uniform peeling. After peeling, the measured size is between 24.95 and 25.05mm, and then automatic polishing is carried out. The rotation speed is controlled at 30r / min, and the polishing material uses silicon carbide abrasive.

[0021] In a possible embodiment, a hexagonal NbTi / Cu superconducting single core rod with a specification of H33.0×600mm is straightened in the horizontal and vertical directions for the H33.18mm incoming superconducting single core rod. The laser meter is set to 600mm, and the straightening roller stops feeding every time it reaches 600mm, so that the superconducting single core rod stops moving forward and waits for sawing.

[0022] Automatic sawing of fixed lengths is carried out, and lubrication and cooling are added during the process to ensure a smooth sawing process.

[0023] The sawn superconducting single core rod is sent to the peeling mold for peeling. The size after peeling is in the range of 32.95~33.05, and then it is sent to the automatic polishing equipment. The polishing mud uses 600 mesh silicon carbide abrasive.

[0024] In a possible embodiment, a method for preparing superconducting hexagonal copper rods of various specifications is provided. The incoming materials are superconducting hexagonal copper rods of various specifications, with the specifications ranging from H25 to H35 mm. When performing horizontal and vertical straightening, since the copper rods are less hard than single-core rods, the pressing amount of the straightening rollers is adjusted to prevent the straightening equipment from causing indentations on the surface of the copper rods and causing damage.

[0025] The fixed length is set to 450mm, and the straightened copper rod is automatically sawed to the fixed length. The saw is cooled during the process to ensure that the temperature of the saw blade is not too high.

[0026] The sawed copper rods of different specifications are sent to the corresponding peeling molds for peeling. The dimensions after peeling are within the tolerance range of the corresponding specifications, and then sent to the automatic polishing equipment. The polishing mud uses high-mesh diamond abrasives and the rotation speed is not more than 30r / min.

[0027] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A superconducting single core rod surface quality optimization and rapid prototyping process, characterized in that: include: Straightening the superconducting single core rod by using a plurality of horizontal straightening rollers and a plurality of vertical straightening rollers; Performing straightening detection on the superconducting single core rod by using a laser detection device; Cutting the superconducting single core rod that has passed the straightening test to a fixed length by using a laser meter and a fixed-length cutting device; Performing quantitative peeling processing on the superconducting single core rod cut to a fixed length by a peeling die; The superconducting single core rod after the peeling treatment is polished by a polishing device arranged in the same direction as the axial direction of the production line.

2. A superconducting single core rod surface quality optimization and rapid prototyping process according to claim 1, characterized in that: The gap width between the horizontal straightening roller and the vertical straightening roller is adjustable, and the gap width between the horizontal straightening roller and the vertical straightening roller is manually adjusted on-site or remotely.

3. A superconducting single core rod surface quality optimization and rapid prototyping process according to claim 2, characterized in that: The laser detection device performs the straightening detection of the superconducting single core rod along the axial direction of the production line. A straightening threshold is set in the laser detection device. The straightening detection of the superconducting single core rod is performed on the production line by self-feedback according to the straightening threshold.

4. A superconducting single core rod surface quality optimization and rapid prototyping process according to claim 1, characterized in that: The setting parameters of the laser meter counter and the cut-to-length cutting device are manually adjusted on-site or remotely, and the laser meter counter and the cut-to-length cutting device are used in conjunction with each other.

5. A superconducting single core rod surface quality optimization and rapid prototyping process according to claim 1, characterized in that: The blades of the peeling die are arranged in a variety of ways, and the inner diameter and shape of the blades are arranged according to the outer diameter data and shape of the superconducting single core rod.

6. A superconducting single core rod surface quality optimization and rapid prototyping process according to claim 1, characterized in that: The stripping process is adjusted according to the change of the copper ratio of the superconducting single core rod.

7. A superconducting single core rod surface quality optimization and rapid prototyping process according to claim 1, characterized in that: The grinding component of the grinding equipment is tubular, polishing mud is arranged in the tubular grinding component, and the grinding component is controlled by a motor to rotate axially.

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