CN115216614A - Automatic heat treatment device and method for large-size wheels - Google Patents
Automatic heat treatment device and method for large-size wheels Download PDFInfo
- Publication number
- CN115216614A CN115216614A CN202210745833.5A CN202210745833A CN115216614A CN 115216614 A CN115216614 A CN 115216614A CN 202210745833 A CN202210745833 A CN 202210745833A CN 115216614 A CN115216614 A CN 115216614A
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- China
- Prior art keywords
- heat treatment
- groove
- sliding
- plate
- wheels
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/34—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tyres; for rims
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
Abstract
The invention discloses an automatic heat treatment device and a method for large-size wheels, belonging to the field of heat treatment devices for wheels, and comprising a heat treatment tank and a holding assembly arranged on one side of the heat treatment tank, wherein the bottom end of an extension block is provided with an installation block, the interior of the installation block is provided with an electric telescopic rod, a motor B is started, the motor B controls a gear to rotate through a rotating shaft, sawteeth meshed on the outer surface of the gear drive an inserting plate to move, two groups of inserting plates are arranged on the inserting plate, so that the two groups of inserting plates move out from two sides of an operation groove, the lower part of the wheels are supported, the rotating shaft penetrates through the center of the wheels to carry out limiting protection on the wheels, the wheels are convenient to carry, the wheels are carried by using the holding assembly, one group of carrying wheels is avoided, the use is convenient, the holding assembly is moved upwards, then the electric telescopic rod is started to extend, the holding assembly is moved to the upper part of the heat treatment tank, and the holding assembly is lowered to the interior of the heat treatment tank to carry out heat treatment, and the use is convenient.
Description
Technical Field
The invention relates to a wheel heat treatment device, in particular to an automatic heat treatment device for large-size wheels.
Background
The wheel is a rigid wheel that holds the inner rim of the tire, supports the tire, and bears the load in conjunction with the tire. The combined tire, rim and spoke are also collectively called a wheel, and a heat treatment device is required to carry out a heat treatment process on the wheel in the production of the wheel.
When the conventional wheels are subjected to heat treatment, the stacked wheels are manually taken down in a group and then placed in a heat treatment frame, but the wheels are frequently moved manually to carry the wheels, the labor intensity is high, the stability of the wheels cannot be guaranteed when the wheels are placed, the wheels fall off due to careless touch, and the personal safety of an operator is easily threatened.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, when a wheel is placed, the stability of the wheel cannot be ensured, the wheel falls off due to careless touch, and the personal safety of an operator is easily threatened, and provides an automatic heat treatment device for a large-size wheel, so that the defects are overcome, and the automatic heat treatment device is convenient to use.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention discloses an automatic heat treatment device for large-size wheels, which comprises a heat treatment tank and a holding component arranged on one side of the heat treatment tank, wherein a moving component is arranged on one side of the holding component, the moving component is connected inside a supporting component in a sliding manner, and one side of the supporting component is arranged on one side of the heat treatment tank;
the movable assembly comprises an inner moving plate and a sliding plate arranged on one side of the inner moving plate, one side of the sliding plate is provided with an extension block, the bottom end of the extension block is provided with an installation block, and an electric telescopic rod is arranged inside the installation block.
Preferably, threaded holes are formed in the bottom ends of the inner moving plate and the sliding plate, moving holes are formed in the upper ends of the threaded holes, and the moving holes are formed in the inner moving plate and the sliding plate.
Preferably, the support assembly comprises a support plate and an inner groove formed in the inner side of the support plate, a sliding groove is formed in one side of the inner groove, and the inner groove and the sliding groove are communicated with the outside.
Preferably, a motor A is installed inside the body of the supporting plate, a worm is installed at the output end of the motor A, and the worm is arranged inside the inner groove and the sliding groove.
Preferably, the top end of the worm is provided with a limiting block, and the direction of the opening position of the sliding groove is consistent with the direction of the placing position of the heat treatment tank.
Preferably, the internal thread of screw hole is connected at the surface of worm, and stopper sliding connection is in the inside that moves the hole, and electric telescopic handle's removal end is installed and is moved the piece, moves the top of piece and installs motor B, moves the bottom of piece and installs the pivot.
Preferably, the output end of the motor B is installed at the top end of the rotating shaft, a lower insertion block is arranged at the bottom end of the fixing rod, and the top end of the lower insertion block and the bottom end of the moving block are fixed through the fixing rod.
Preferably, the outer surface of the rotating shaft is provided with an anti-cracking layer, and the outer surface of the anti-cracking layer is provided with a heat insulation layer.
Preferably, the fortune groove has been seted up to the middle-end of lower inserted block, and the gear is installed to the middle-end in fortune groove, and the spacing groove has been seted up to the inner wall in fortune groove, and the inside sliding connection of spacing groove has the draw runner, and the picture peg is installed to one side of draw runner, and the surface mounting of picture peg has the sawtooth, and spacing is installed to one side of picture peg.
Preferably, picture peg, sawtooth, spacing strip, draw runner and spacing groove are equipped with two sets ofly, and two sets ofly picture peg, sawtooth, spacing strip, draw runner and spacing groove are around the central symmetry distribution of gear, and the bottom of pivot runs through the top of lower inserted block and connect the top at the gear, and gear movable mounting is in the middle-end of fortune groove.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
compared with the prior art, the invention has the following beneficial effects:
(1) According to the large-size wheel automatic heat treatment device, the motor A is started to enable the worm to rotate, the threaded hole in threaded connection with the outer surface of the worm enables the inner moving plate and the sliding plate to move upwards along with the sliding groove, the sliding groove and the inner groove enable the inner moving plate and the sliding plate to move in an angle mode so as to enable the inner moving plate and the sliding plate to move vertically upwards, the height of the assembling and holding assembly is increased, the descending height of the assembling and holding assembly is controlled according to the number of required wheels, the wheels are carried by the assembling and holding assembly, one group of carrying wheels is avoided, the use is convenient, the assembling and holding assembly is moved upwards, then the electric telescopic rod is started to extend, the assembling and holding assembly is enabled to move to the position above the heat treatment tank, the assembling and holding assembly is lowered to the interior of the heat treatment tank to carry out heat treatment, and the use is convenient;
(2) According to the automatic heat treatment device for the large-size wheels, when the descending position of the lower insert block reaches the expected position, the motor B is started, the motor B controls the gear to rotate through the rotating shaft, the sawtooth meshed on the outer surface of the gear drives the insert plate to move, the slide bar arranged on one side of the insert plate moves inside the limiting groove, so that the insert plate can move more stably, two groups of insert plates are arranged on the insert plate, the two groups of insert plates are moved out from two sides of the operating groove to support the lower portion of the wheels, the rotating shaft penetrates through the centers of the wheels to limit and protect the wheels, the wheels are convenient to carry, the rotating shaft is protected from cracking due to high temperature by the aid of the arranged anti-cracking layer, and the arranged thermal insulation layer is used for isolating the high temperature in the heat treatment tank.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a block diagram of the support assembly of the present invention;
FIG. 3 is a block diagram of the moving assembly and holding assembly of the present invention;
FIG. 4 is an internal structure view of the lower insert block of the present invention;
FIG. 5 is an enlarged view taken at A in FIG. 3 according to the present invention;
fig. 6 is a structure view of the rotating shaft of the present invention.
In the figure: 1. a heat treatment tank; 2. a support assembly; 21. a support plate; 22. an inner tank; 23. a chute; 24. a motor A; 25. a worm; 26. a limiting block; 3. a moving assembly; 31. moving the plate inwards; 311. a threaded hole; 312. moving the hole; 32. a slide plate; 33. extending the block; 34. mounting a block; 35. an electric telescopic rod; 4. a holding assembly; 41. moving the block; 42. a motor B; 43. a rotating shaft; 431. a thermal insulation layer; 432. an anti-cracking layer; 44. a fixing rod; 45. a lower insert block; 451. a manufacturing groove is operated; 452. inserting plates; 453. saw teeth; 454. a limiting strip; 455. a slide bar; 456. a gear; 457. a limiting groove.
Detailed Description
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, and not all of the embodiments. 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.
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
Referring to fig. 1, the large-sized wheel automatic heat treatment device comprises a heat treatment tank 1 and a holding component 4 arranged on one side of the heat treatment tank 1, wherein a moving component 3 is arranged on one side of the holding component 4, the moving component 3 is connected inside a supporting component 2 in a sliding manner, and one side of the supporting component 2 is arranged on one side of the heat treatment tank 1.
The present invention will be further described with reference to the following examples.
The first embodiment is as follows:
with reference to fig. 2 and 3, the moving assembly 3 includes an inner moving plate 31 and a sliding plate 32 installed on one side of the inner moving plate 31, an extension block 33 is installed on one side of the sliding plate 32, an installation block 34 is installed at the bottom end of the extension block 33, and an electric telescopic rod 35 is installed inside the installation block 34.
The bottom ends of the inward moving plate 31 and the sliding plate 32 are provided with threaded holes 311, the upper end of the threaded hole 311 is provided with a moving hole 312, and the moving hole 312 is arranged inside the inward moving plate 31 and the sliding plate 32.
The supporting assembly 2 includes a supporting plate 21 and an inner groove 22 formed inside the supporting plate 21, a sliding groove 23 is formed at one side of the inner groove 22, and the insides of the inner groove 22 and the sliding groove 23 are communicated with the outside.
The motor A24 is installed in the body of the support plate 21, the worm 25 is installed at the output end of the motor A24, and the worm 25 is arranged in the inner groove 22 and the sliding groove 23.
The top end of the worm 25 is provided with a limit block 26, and the direction of the opening position of the chute 23 is consistent with the direction of the placing position of the heat treatment tank 1.
The inner part of the threaded hole 311 is screwed on the outer surface of the worm 25, the stopper 26 is slidably coupled inside the moving hole 312, and the inner moving plate 31 and the sliding plate 32 are slidably coupled inside the inner groove 22 and the sliding groove 23.
In this embodiment: the motor A24 is started, the worm 25 rotates, the threaded hole 311 in the outer surface of the worm 25 enables the inner moving plate 31 and the sliding plate 32 to move upwards along with the sliding groove 23, the sliding groove 23 and the inner groove 22 enable the inner moving plate 31 and the sliding plate 32 to move in an angle limited mode, the inner moving plate 31 and the sliding plate 32 can move vertically upwards, the height of the assembly holding component 4 is accordingly increased, the descending height of the assembly holding component 4 is controlled according to the number of required wheels, the assembly holding component 4 is used for carrying the wheels, one group of carrying wheels is avoided, the use is convenient, the assembly holding component 4 is moved upwards, then the electric telescopic rod 35 is started to extend, the assembly holding component 4 is enabled to move to the upper portion of the heat treatment tank 1, at the moment, the assembly holding component 4 is lowered to the inside of the heat treatment tank 1 for heat treatment, and the use is convenient.
Example two:
referring to fig. 3-6, the moving end of the electric telescopic rod 35 is provided with a moving block 41, the top end of the moving block 41 is provided with a motor B42, and the bottom end of the moving block 41 is provided with a rotating shaft 43.
The output end of the motor B42 is installed at the top end of the rotating shaft 43, the bottom end of the fixed rod 44 is provided with a lower insertion block 45, and the top end of the lower insertion block 45 and the bottom end of the moving block 41 are fixed through the fixed rod 44.
The outer surface of the rotating shaft 43 is provided with an anti-cracking layer 432, and the outer surface of the anti-cracking layer 432 is provided with a heat insulation layer 431.
The middle end of the lower insert block 45 is provided with an operation groove 451, the middle end of the operation groove 451 is provided with a gear 456, the inner wall of the operation groove 451 is provided with a limiting groove 457, the inside of the limiting groove 457 is connected with a sliding strip 455 in a sliding manner, one side of the sliding strip 455 is provided with an insert plate 452, the outer surface of the insert plate 452 is provided with saw teeth 453, and one side of the insert plate 452 is provided with a limiting strip 454.
The inserting plate 452, the saw teeth 453, the limiting strip 454, the sliding strip 455 and the limiting groove 457 are provided with two groups, the two groups of inserting plate 452, the saw teeth 453, the limiting strip 454, the sliding strip 455 and the limiting groove 457 are symmetrically distributed around the center of the gear 456, the bottom end of the rotating shaft 43 penetrates through the top end of the lower inserting block 45 and is connected to the top end of the gear 456, and the gear 456 is movably installed at the middle end of the operation groove 451.
In this embodiment: when the descending position of the lower insert block 45 reaches the expected position, the motor B42 is started, the motor B42 controls the gear 456 to rotate through the rotating shaft 43, the sawtooth 453 meshed with the outer surface of the gear 456 drives the insert plate 452 to move, the slide bar 455 installed on one side of the insert plate 452 moves inside the limiting groove 457, so that the insert plate 452 moves more stably, two groups of insert plates 452 are arranged, the two groups of insert plates 452 move out from two sides of the operating groove 451, the lower portion of the wheel is supported, the rotating shaft 43 penetrates through the center of the wheel, the wheel is protected in a limiting mode, the wheel is convenient to carry, the rotating shaft 43 is protected to crack due to high temperature, and the thermal insulation layer 431 is used for isolating the high temperature in the thermal treatment tank 1.
In conclusion: the large-size wheel automatic heat treatment device of the invention starts the motor A24 to rotate the worm 25, the screw hole 311 screwed on the outer surface of the worm 25 can drive the inner moving plate 31 and the sliding plate 32 to move upwards along with the chute 23, the chute 23 and the inner groove 22 can limit the angle of the movement of the inner moving plate 31 and the sliding plate 32, and drive the inner moving plate 31 and the sliding plate 32 to move vertically upwards, thereby increasing the height of the holding component 4, controlling the descending height of the holding component 4 according to the required number of wheels, using the holding component 4 to carry the wheels, avoiding a group of carrying wheels, being convenient to use, moving the holding component 4 upwards, then starting the electric telescopic rod 35 to extend, and driving the holding component 4 to move to the upper part of the heat treatment tank 1, at this moment, the holding assembly 4 is descended to the inside of the heat treatment tank 1 for heat treatment, the use is convenient, when the descending position of the lower insert block 45 reaches the expected position, the motor B42 is started, the motor B42 controls the gear 456 to rotate through the rotating shaft 43, the saw teeth 453 meshed on the outer surface of the gear 456 drive the insert plate 452 to move, the slide bar 455 installed on one side of the insert plate 452 moves inside the limiting groove 457, so that the insert plate 452 moves more stably, two groups of insert plates 452 are arranged, the two groups of insert plates 452 are moved out from two sides of the operating groove 451, the lower part of the wheel is supported, the rotating shaft 43 penetrates through the center of the wheel to limit and protect the wheel, the carrying is convenient, the anti-cracking layer 432 is arranged to protect the rotating shaft 43 from cracking due to high temperature, and the thermal insulation layer 431 is arranged to isolate the high temperature in the heat treatment tank 1.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Automatic heat treatment device of jumbo size wheel, including heat treatment jar (1) and the dress that sets up in heat treatment jar (1) one side holds subassembly (4), its characterized in that: a moving component (3) is arranged on one side of the holding component (4), the moving component (3) is connected in the supporting component (2) in a sliding manner, and one side of the supporting component (2) is arranged on one side of the heat treatment tank (1);
remove subassembly (3) including interior board (31) and install slide (32) of moving in board (31) one side in, one side of slide (32) is installed and is prolonged piece (33), prolongs the bottom of piece (33) and installs installation piece (34), and the internally mounted of installation piece (34) has electric telescopic handle (35), threaded hole (311) have been seted up to the bottom of interior board (31) and slide (32), and the upper end of threaded hole (311) has been seted up and has been moved hole (312), and moves hole (312) and set up the inside of moving in board (31) and slide (32).
2. The automated heat treatment apparatus for large-sized wheels according to claim 1, wherein: the supporting component (2) comprises a supporting plate (21) and an inner groove (22) formed in the inner side of the supporting plate (21), a sliding groove (23) is formed in one side of the inner groove (22), and the inner parts of the inner groove (22) and the sliding groove (23) are communicated with the outside.
3. The automated heat treatment device for large-sized wheels according to claim 2, wherein: the motor A (24) is installed inside the body of the supporting plate (21), the worm (25) is installed at the output end of the motor A (24), and the worm (25) is arranged inside the inner groove (22) and the sliding groove (23).
4. The automated heat treatment device for large-sized wheels according to claim 1, wherein: the top end of the worm (25) is provided with a limiting block (26), and the direction of the opening position of the sliding groove (23) is consistent with the direction of the placing position of the heat treatment tank (1).
5. The automated heat treatment device for large-sized wheels according to claim 4, wherein: the inside threaded connection of screw hole (311) is in the surface of worm (25), and stopper (26) sliding connection is in the inside that moves hole (312), and the removal end of electric telescopic handle (35) is installed and is moved piece (41), moves the top of piece (41) and installs motor B (42), moves the bottom of piece (41) and installs pivot (43).
6. The automated heat treatment apparatus for large-sized wheels according to claim 5, wherein: the output end of the motor B (42) is installed at the top end of the rotating shaft (43), a lower insertion block (45) is arranged at the bottom end of the fixing rod (44), and the top end of the lower insertion block (45) and the bottom end of the moving block (41) are fixed through the fixing rod (44).
7. The automated heat treatment apparatus for large-sized wheels according to claim 6, wherein: the outer surface of the rotating shaft (43) is provided with an anti-cracking layer (432), and the outer surface of the anti-cracking layer (432) is provided with a heat insulation layer (431).
8. The automated heat treatment apparatus for large-sized wheels according to claim 6, wherein: the operation groove (451) has been seted up to the middle-end of lower inserted block (45), gear (456) are installed to the middle-end of operation groove (451), spacing groove (457) have been seted up to the inner wall of operation groove (451), the inside sliding connection of spacing groove (457) has draw runner (455), picture peg (452) are installed to one side of draw runner (455), the surface mounting of picture peg (452) has sawtooth (453), spacing (454) are installed to one side of picture peg (452).
9. The automated heat treatment apparatus for large-sized wheels according to claim 8, wherein: the inserting plate (452), the saw teeth (453), the limiting strip (454), the sliding strip (455) and the limiting groove (457) are provided with two groups, the two groups of inserting plates (452), the saw teeth (453), the limiting strip (454), the sliding strip (455) and the limiting groove (457) are symmetrically distributed about the center of the gear (456), the bottom end of the rotating shaft (43) penetrates through the top end of the lower inserting block (45) and is connected to the top end of the gear (456), and the gear (456) is movably mounted at the middle end of the operating groove (451).
10. The use method of the large-size wheel automatic heat treatment device is characterized by comprising the following steps: comprises the following steps:
s1, starting a motor A24 to enable a worm 25 to rotate, enabling an inner moving plate 31 and a sliding plate 32 to move upwards along with a sliding groove 23 due to the fact that a threaded hole 311 which is in threaded connection with the outer surface of the worm 25 enables the inner moving plate 31 and the sliding plate 32 to move upwards, enabling the sliding groove 23 and an inner groove 22 to limit the movement angles of the inner moving plate 31 and the sliding plate 32, enabling the inner moving plate 31 and the sliding plate 32 to move vertically upwards, accordingly improving the height of a holding assembly 4, and controlling the descending height of the holding assembly 4 according to the required number of wheels;
s2, the assembly 4 is utilized to carry the wheels, a group of carrying wheels is avoided, the use is convenient, the assembly 4 is moved upwards, the electric telescopic rod 35 is started to extend, the assembly 4 is driven to move to the upper side of the heat treatment tank 1, and the assembly 4 is lowered into the heat treatment tank 1 to be subjected to heat treatment, so that the use is convenient;
s3, when the descending position of the lower inserting block 45 reaches the expected position, the motor B42 is started, the motor B42 controls the gear 456 to rotate through the rotating shaft 43, the sawtooth 453 meshed with the outer surface of the gear 456 drives the inserting plate 452 to move, the sliding strip 455 installed on one side of the inserting plate 452 moves inside the limiting groove 457, so that the inserting plate 452 moves more stably, two groups of inserting plates 452 are arranged, the two groups of inserting plates 452 move out from the two sides of the operating groove 451, the lower portion of the wheel is supported, the rotating shaft 43 penetrates through the center of the wheel, the wheel is limited and protected, and the carrying is facilitated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210745833.5A CN115216614A (en) | 2022-06-29 | 2022-06-29 | Automatic heat treatment device and method for large-size wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210745833.5A CN115216614A (en) | 2022-06-29 | 2022-06-29 | Automatic heat treatment device and method for large-size wheels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115216614A true CN115216614A (en) | 2022-10-21 |
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ID=83610048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210745833.5A Pending CN115216614A (en) | 2022-06-29 | 2022-06-29 | Automatic heat treatment device and method for large-size wheels |
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| Country | Link |
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| CN (1) | CN115216614A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3108559A (en) * | 1959-03-02 | 1963-10-29 | Chausson Usines Sa | Device for soldering various parts |
| CN214358876U (en) * | 2020-12-31 | 2021-10-08 | 吉林市江机工模具有限公司 | Heat treating stove loading attachment |
| CN216427355U (en) * | 2021-11-30 | 2022-05-03 | 江苏德祐精密钢管有限公司 | Solid solution heat treatment processing device of high-precision stainless steel seamless steel pipe |
-
2022
- 2022-06-29 CN CN202210745833.5A patent/CN115216614A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3108559A (en) * | 1959-03-02 | 1963-10-29 | Chausson Usines Sa | Device for soldering various parts |
| CN214358876U (en) * | 2020-12-31 | 2021-10-08 | 吉林市江机工模具有限公司 | Heat treating stove loading attachment |
| CN216427355U (en) * | 2021-11-30 | 2022-05-03 | 江苏德祐精密钢管有限公司 | Solid solution heat treatment processing device of high-precision stainless steel seamless steel pipe |
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