CN219253776U - Unit for forming hexagonal boron stainless steel tube - Google Patents
Unit for forming hexagonal boron stainless steel tube Download PDFInfo
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- CN219253776U CN219253776U CN202320839053.7U CN202320839053U CN219253776U CN 219253776 U CN219253776 U CN 219253776U CN 202320839053 U CN202320839053 U CN 202320839053U CN 219253776 U CN219253776 U CN 219253776U
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Abstract
The utility model discloses a unit for forming hexagonal boron stainless steel pipes, which relates to the field of special pipe forming devices and comprises a machine base, a deformation unit, a heating furnace, a biting frame, an introduction unit, a straightening machine, a feeding frame and a discharging frame, wherein five groups of deformation units are arranged in the middle of the machine base, the heating furnace, the biting frame and the introduction unit are sequentially arranged on the left side of the deformation unit, the straightening machine is arranged on the right side of the deformation unit, and the feeding frame and the discharging frame are respectively arranged on the left side and the right side of the machine base. The device not only has the whole production capacity of the existing drawing type machine set, but also ensures the precision of the boron stainless steel hexagonal pipe in the processing process, has high degree of automation, can realize continuous roll bending and rolling, and greatly improves the production efficiency.
Description
Technical field:
the utility model relates to a unit for forming hexagonal boron stainless steel pipes, and belongs to the technical field of special pipe forming devices.
The background technology is as follows:
with the vigorous development of the nuclear power industry in China, the spent fuel generated by the operation of the nuclear power station is increased year by year, and the safe storage and transportation of the spent fuel are widely paid attention to. The neutron absorption material is used as a key functional material in the material, and plays a critical role in ensuring that the spent fuel is in a subcritical state. As a common neutron absorbing material, the boron stainless steel has good mechanical property, structural stability, corrosion resistance and thermal neutron absorbing property, and has wide application prospect in the fields of spent fuel storage and transportation.
Hexagonal boron stainless steel pipe is a common section bar for spent fuel storage grillwork, and can be theoretically obtained through various preparation methods. Document CN202733413U discloses a method for cold drawing a seamless steel tube, which comprises a steel tube body subjected to cold drawing seamless treatment, wherein the outer wall and the inner wall of the steel tube body are both regular hexagons, the inner wall of the steel tube body is provided with a plastic film layer subjected to polishing treatment, and the outer wall of the steel tube body is coated with an epoxy oil-resistant anti-corrosion layer. Document CN112692065a discloses a method for preparing a high-strength thin-wall stainless steel hexagonal seamless tube, which comprises the step of cold-rolling a round tube with a certain specification into a target hexagonal seamless tube through three-roller precision cold rolling, stress relief heat treatment and three-roller precision cold rolling. The steel pipe by the two methods disclosed above will undergo a large plastic deformation during deformation into a hexagon (including cold bending and wall reduction), and will be a difficult deformation process for boron stainless steel in which the presence of a large number of hard and brittle boride particles in the steel causes a dramatic plastic deterioration. In order to solve the problem of forming a hexagonal boron stainless steel tube, russian patent RU146501U1 discloses a method and a unit thereof, namely, a round tube with the wall thickness consistent with the wall thickness of a target hexagonal tube is deformed by continuous roll bending of four frame forming rollers in a drawing mode to obtain the hexagonal tube, and the unit can realize that only roll bending does not reduce the wall, so that the plastic deformation of the boron stainless steel tube is greatly reduced, and the hexagonal forming of the boron stainless steel tube is possible. However, the machine set has the defects of low machining precision, difficulty in ensuring that the central lines of the raw material pipe and the hexagonal pipe are always consistent, complicated size adjusting steps, low efficiency in treating the problems of pipe bending and twisting, poor continuous production capacity and the like.
The utility model comprises the following steps:
aiming at the problems, the technical problem to be solved by the utility model is to provide a unit for forming the hexagonal pipe by roll bending and rolling of the boron stainless steel round pipe, so as to realize multi-pass continuous roll bending and rolling deformation of the boron stainless steel round pipe and finally obtain the target hexagonal pipe meeting the external dimension requirement, solve the problems of low dimensional parameter precision, incapability of completing forming and straightening (bending and twisting problems of the original pipe and the hexagonal pipe) and the like of the traditional unit, and have high automation degree, continuous production and improved production efficiency.
The utility model relates to a unit for forming hexagonal boron stainless steel pipes, which comprises a machine base, a deformation unit, a heating furnace, a biting frame, an introduction unit, a straightening machine, a feeding frame and a discharging frame, wherein five groups of deformation units are arranged in the middle of the machine base, the heating furnace, the biting frame and the introduction unit are sequentially arranged on the left side of the deformation unit, the straightening machine is arranged on the right side of the deformation unit, and the feeding frame and the discharging frame are respectively arranged on the left side and the right side of the machine base.
Preferably, the modification unit is provided with an upper horizontal roller I, a lower horizontal roller I and left and right vertical rollers, wherein the upper horizontal roller I and the lower horizontal roller I are driving rollers, and the left and right vertical rollers are driven rollers.
Preferably, the heating furnace comprises a furnace body and a furnace temperature control system, wherein the heating furnace can be a resistance furnace or an induction furnace, and the heating furnace body is a through hole type so that the boron stainless steel pipe passes through the furnace body in a suspending manner.
Preferably, the biting frame is provided with an upper horizontal roller II and a lower horizontal roller II, the upper horizontal roller II and the lower horizontal roller II are driving rollers, the rollers are arc concave to form elliptical hole patterns, and the biting and forward movement of the boron stainless steel circular tube can be realized by rotating the upper horizontal roller II and the lower horizontal roller II.
Preferably, the guiding unit is provided with a left vertical roller, a right vertical roller and a first hand wheel, the left vertical roller and the right vertical roller are of driven structures, the roller shape is cylindrical, and the distance between the left vertical roller and the right vertical roller 52 is adjusted by rotating the first hand wheel.
Preferably, the straightening machine is provided with an upper horizontal roller, a lower horizontal roller, a left vertical roller, a right vertical roller, a hand wheel II, an upper positioning motor and a lower positioning motor, the straightening machine is four-roller type, the four rollers are driven, the upper horizontal roller and the lower horizontal roller are V-shaped, the left vertical roller and the right vertical roller are cylindrical, a closed hexagonal hole type is formed, and the upper vertical motor, the lower positioning motor and the hand wheel II can be rotated to perform up-down, left-right and circumferential adjustment, so that the straightening of the hexagonal boron stainless steel tube is realized.
Preferably, a control panel is arranged on the straightener, the moving speed of the boron stainless steel tube is controlled by the rotating speed of a horizontal roller on the control panel, the speed of the modification unit is regulated by the rotating speed of the horizontal roller on the control panel, and the furnace temperature of the heating furnace is controlled by a power regulator on the control panel.
The utility model has the beneficial effects that:
1. the machine set is a roll bending roller type machine set, can drive the steel pipe to move by driving force, reduces a traction system or a thrust system, and is advanced compared with the traditional machine set;
2. the five groups of deformation rollers of the unit ensure that the deformation distribution of each group is more refined and uniform, and the dimensional accuracy is better ensured;
3. the machine set has high automation degree, can roll and roll continuously, and greatly improves the production efficiency;
4. the machine frame is reasonable in position design and convenient to adjust, has a fine adjustment function, takes the side rollers as horizontal planes, adjusts the upper and lower horizontal rollers, and can ensure that the central lines of the raw material pipe and the hexagonal pipe are consistent all the time, thereby ensuring the position tolerance and the precision;
5. the unit has a straightening function, and can adjust the bending and twisting problems of the raw material pipe and the target hexagonal pipe on line.
Description of the drawings:
for ease of illustration, the utility model is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the hexagonal forming process of the boron stainless steel of the present utility model.
1-a stand; 2-a modification unit; 21-upper horizontal roller I; 22-lower horizontal roller I; 23-left and right vertical rolls; 3-a heating furnace; 4-biting into the frame; 41-upper horizontal roller II; 42-lower horizontal roller II; 5-importing a unit; 51-left vertical rolls; 52-right vertical rolls; 53-a first hand wheel; 6-straightening machine; 61-a second hand wheel; 62-upper position-adjusting motor; 63-a lower positioning motor; 7-a feeding frame; 8-a discharging rack; 9-a control panel; 10-boron stainless steel tube.
The specific embodiment is as follows:
as shown in fig. 1 and 2, the following technical solutions are adopted in this embodiment: the automatic feeding machine comprises a machine base 1, a modification unit 2, a heating furnace 3, a biting frame 4, an introduction unit 5, a straightening machine 6, a feeding frame 7 and a discharging frame 8, wherein five modification units 2 are arranged in the middle of the machine base 1, the heating furnace 3, the biting frame 4 and the introduction unit 5 are sequentially arranged on the left side of the modification unit 2, the straightening machine 6 is arranged on the right side of the modification unit 2, and the feeding frame 7 and the discharging frame 8 are respectively arranged on the left side and the right side of the machine base 1.
The modification unit 2 is provided with an upper horizontal roller I21, a lower horizontal roller I22 and left and right vertical rollers 23, and forms a gradual closed hexagonal hole pattern, wherein the upper horizontal roller I21 and the lower horizontal roller I22 are driving rollers, and the left and right vertical rollers 23 are driven rollers.
The heating furnace 3 comprises a furnace body and a furnace temperature control system, wherein the heating furnace 3 can be a resistance furnace or an induction furnace, and the heating furnace body is a through hole type so that the boron stainless steel pipe passes through the furnace body in a suspending manner.
The biting frame 4 is provided with an upper horizontal roller II 41 and a lower horizontal roller II 42, the upper horizontal roller II 41 and the lower horizontal roller II 42 are driving rollers, the rollers are arc concave to form elliptical hole patterns, and the biting and forward movement of the boron stainless steel circular tube can be realized by rotating the upper horizontal roller II 41 and the lower horizontal roller II 42.
The left vertical roller 51, the right vertical roller 52 and the first hand wheel 53 are arranged on the lead-in unit 5, the left vertical roller 51 and the right vertical roller 52 are of driven structures, the roller shape is cylindrical, and the distance between the left vertical roller 51 and the right vertical roller 52 is adjusted by rotating the first hand wheel 53.
The straightening machine 6 is provided with an upper horizontal roller, a lower horizontal roller, a left vertical roller, a right vertical roller, a hand wheel II 61, an upper positioning motor 62 and a lower positioning motor 63, the straightening machine 6 is four-roller type, the four rollers are driven, the upper horizontal roller and the lower horizontal roller are V-shaped, the left vertical roller and the right vertical roller are cylindrical, a closed hexagonal hole type is formed, and the upper vertical motor 62, the lower positioning motor 63 and the hand wheel II 61 can be rotated to perform up-down, left-right and circumferential adjustment, so that the straightening of the hexagonal boron stainless steel tube is realized.
The straightener 6 is provided with a control panel 9, the moving speed of the boron stainless steel tube is controlled by the rotating speed of a horizontal roller on the control panel 9, the speed of the modification unit 2 is regulated by the roller speed of the horizontal roller on the control panel 9, and the furnace temperature of the heating furnace 3 is controlled by a power regulator on the control panel 9.
The working principle of the specific embodiment is as follows: the boron stainless steel tube 10 is placed on the feeding frame 7, enters the biting frame 4 through the left vertical roller 51 and the right vertical roller 52 on the guiding unit 5, passes through the heating furnace 3 under the driving of the upper horizontal roller 41 and the lower horizontal roller 42 of the biting frame 4, then sequentially enters the five groups of modification units 2, the forward moving speed of the boron stainless steel tube 10 is controlled by the rotating speed of the upper horizontal roller 21 and the lower horizontal roller 22 on the modification units 2, the boron stainless steel tube 10 is gradually rolled into a hexagonal section tube through a round section roller, then is straightened in the straightening machine 6, so as to obtain a hexagonal steel tube meeting the target requirement, and finally reaches the discharging frame 8.
The special embodiment can also carry out hexagonal molding on other difficult-to-deform materials, such as nickel-based alloy, titanium alloy, ODS ferrite stainless steel and the like, takes the unit as a prototype, can also design the molding of the difficult-to-deform materials with other shapes, such as triangle, quadrangle and the like, and has positive effect on the development of the molding of the special pipe made of the difficult-to-deform materials.
The molding process of the specific embodiment comprises the following steps: (1) starting all driving rollers and simultaneously turning on a heating furnace; (2) Testing the carbon steel tube with the same specification as the boron steel tube, adjusting the heating temperature and the rotation speed of the driving roller to prepare a hexagonal carbon steel tube, and checking whether the distances between the upper roller, the lower roller and the left roller and the right roller meet the requirement on the external dimension of the target hexagonal boron steel tube; (3) After the unit verification is completed, a boron stainless steel pipe with the same specification as the carbon steel pipe for verification is sent to the unit for test run, and a complete and cracking-free hexagonal boron stainless steel pipe 257mm multiplied by 7mm multiplied by 2500mm is successfully prepared, and through size verification, the external fillet radius, the external edge-to-edge size, the internal diagonal size, the fillet wall thickness and the like all meet the size requirements of a target pipe.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a unit for hexagonal boron stainless steel tube shaping which characterized in that: the automatic feeding machine comprises a machine base (1), a modification unit (2), a heating furnace (3), a biting frame (4), an introduction unit (5), a straightening machine (6), a feeding frame (7) and a discharging frame (8), wherein five groups of modification units (2) are arranged in the middle of the machine base (1), the heating furnace (3), the biting frame (4) and the introduction unit (5) are sequentially arranged on the left side of the modification unit (2), the straightening machine (6) is arranged on the right side of the modification unit (2), and the feeding frame (7) and the discharging frame (8) are respectively arranged on the left side and the right side of the machine base (1);
an upper horizontal roller I (21), a lower horizontal roller I (22) and left and right vertical rollers (23) are arranged on the modification unit (2), a gradual closed hexagonal hole pattern is formed, the upper horizontal roller I (21) and the lower horizontal roller I (22) are driving rollers, and the left and right vertical rollers (23) are driven rollers;
the heating furnace (3) comprises a furnace body and a furnace temperature control system, wherein the heating furnace (3) can be a resistance furnace or an induction furnace, and the heating furnace body is a through hole type.
2. A unit for hexagonal boron stainless steel tube forming according to claim 1, wherein: the biting frame (4) is provided with an upper horizontal roller II (41) and a lower horizontal roller II (42), the upper horizontal roller II (41) and the lower horizontal roller II (42) are driving rollers, and the rollers are arc concave to form elliptical holes.
3. A unit for hexagonal boron stainless steel tube forming according to claim 1, wherein: the guiding-in unit (5) is provided with a left vertical roller (51), a right vertical roller (52) and a first hand wheel (53), wherein the left vertical roller (51) and the right vertical roller (52) are of driven structures, and the rollers are cylindrical.
4. A unit for hexagonal boron stainless steel tube forming according to claim 1, wherein: the straightening machine (6) is provided with an upper horizontal roller, a lower horizontal roller, a left vertical roller, a right vertical roller, a hand wheel II (61), an upper position adjusting motor (62) and a lower position adjusting motor (63), the straightening machine (6) is four-roller type, the four rollers are driven, the upper horizontal roller and the lower horizontal roller are V-shaped, the left vertical roller and the right vertical roller are cylindrical, and a closed hexagonal hole pattern is formed.
5. A unit for hexagonal boron stainless steel tube forming according to claim 1, wherein: a control panel (9) is arranged on the straightener (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320839053.7U CN219253776U (en) | 2023-04-14 | 2023-04-14 | Unit for forming hexagonal boron stainless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320839053.7U CN219253776U (en) | 2023-04-14 | 2023-04-14 | Unit for forming hexagonal boron stainless steel tube |
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| Publication Number | Publication Date |
|---|---|
| CN219253776U true CN219253776U (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320839053.7U Active CN219253776U (en) | 2023-04-14 | 2023-04-14 | Unit for forming hexagonal boron stainless steel tube |
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| Country | Link |
|---|---|
| CN (1) | CN219253776U (en) |
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2023
- 2023-04-14 CN CN202320839053.7U patent/CN219253776U/en active Active
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