CN115265104B - Electroslag remelting consumable electrode baking and drying device and method thereof - Google Patents
Electroslag remelting consumable electrode baking and drying device and method thereof Download PDFInfo
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- CN115265104B CN115265104B CN202210735261.2A CN202210735261A CN115265104B CN 115265104 B CN115265104 B CN 115265104B CN 202210735261 A CN202210735261 A CN 202210735261A CN 115265104 B CN115265104 B CN 115265104B
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- drying agent
- shell
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- 238000001035 drying Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000002274 desiccant Substances 0.000 claims abstract description 115
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 11
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000004571 lime Substances 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims 1
- 238000003723 Smelting Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000320 mechanical mixture Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to an electroslag remelting consumable electrode baking and drying device and a method thereof, belonging to the technical field of electroslag remelting smelting in the metallurgical industry. The technical proposal is as follows: the drying device comprises a drying baking shell (1), a drying agent outlet (3), an outlet baffle (5) and a drying agent baffle (6), wherein the drying baking shell (1) is of an isosceles trapezoid structure formed by combining four side plates and a bottom plate, the cross section of the isosceles trapezoid structure is large at the top and small at the bottom, two drying agent baffles (6) which are vertically arranged are arranged in the drying baking shell (1), and the interior of the drying baking shell (1) is divided into a left part, a middle part and a right part by the two drying agent baffles (6) which are vertically arranged; the lower part of the baking drying shell (1) is provided with a drying agent outlet (3), and the drying agent outlet (3) is provided with an outlet baffle plate (5). The beneficial effects of the invention are as follows: the end part of the consumable electrode can be ensured to be kept at a certain temperature and in a dry state at the beginning of electroslag remelting, so that the bottom of the electroslag ingot is prevented from increasing H after the electroslag remelting.
Description
Technical Field
The invention relates to an electroslag remelting consumable electrode baking and drying device and a method thereof, belonging to the technical field of electroslag remelting smelting in the metallurgical industry.
Background
Electroslag remelting belongs to a secondary refining method, is an important smelting means for producing high-quality alloy (steel) with important purposes such as high-temperature alloy, precise alloy, aviation bearing steel, special tool and die steel and the like, can effectively improve the cast structure of a steel ingot, basically eliminates defects such as segregation, looseness, shrinkage cavity and the like, and promotes the removal of harmful impurity elements and nonmetallic inclusions in the steel (alloy). The consumable electrode is a raw material for electroslag remelting smelting, and the state of the consumable electrode has an important influence on the electroslag remelting smelting process.
Electroslag remelting is a process of melting and refining an electricity consumption electrode by means of slag heat resistance generated when a slag pool passes through current, and solidifying and forming the obtained liquid metal in a water-cooling crystallizer. The basic operation process is to add premelt slag into a copper water-cooled crystallizer and insert the end of a consumable electrode into the premelt slag. When the consumable electrode, the premelting slag and the bottom water tank form a power supply loop with the transformer through the short net, current is output from the transformer through the premelting slag. Since the resistance of slag in the above-mentioned power supply circuit is relatively large, and occupies most of the voltage drop of the secondary voltage of the transformer, a large amount of joule heat is generated in the slag bath to be in a high-temperature molten state. The temperature of the slag pool is far higher than the melting point of metal, so that the end part of the consumable electrode is gradually heated and melted, the melted metal is converged into liquid drops, under the action of gravity, the metal liquid drops fall off from the end of the electrode, and continuously gather to form a metal molten pool after passing through the slag pool, and the liquid metal is gradually solidified into a steel ingot due to forced cooling of the water-cooling crystallizer.
If there is moisture on the surface of the end of the consumable electrode at the beginning of electroslag remelting, this moisture will be absorbed by the premelted slag, since conventional premelted slag contains a certain amount of CaO and has a strong water absorption, and this absorbed H 2 O can be ionized and decomposed in the slag melting process, so that the H content at the bottom of the steel ingot exceeds the standard, and even air holes are formed at the bottom of the electroslag ingot. In order to ensure the drying of the consumable electrode tip, the most direct and efficient way is to bake the consumable electrode tip to a temperature at the electroslagThe temperature of the end part of the consumable electrode is high, which is beneficial to melting premelting slag, reducing the unstable period time of melting slag and improving the quality of cast ingot. Therefore, finding a suitable consumable electrode tip bake drying method is of great importance.
Generally, the consumable electrode is placed in a heating furnace to bake or the end of the consumable electrode is baked by a flame gun to bake and dry the end of the consumable electrode, but the consumable electrode is generally welded with a dummy electrode before use, if baked by the heating furnace, the whole (consumable electrode+dummy electrode) needs to be baked, and if the dummy electrode is baked frequently, the service life of the dummy electrode is reduced, so that the baking mode by the heating furnace is not particularly suitable; by baking with a flame gun, the combustion products of the flame gun contain H 2 O is adsorbed on the end of the consumable electrode and thus is not properly baked by a flame gun. Therefore, it is necessary to design a proper consumable electrode tip bake-drying apparatus to ensure smooth progress of the electroslag remelting process.
Disclosure of Invention
The invention aims to provide a baking and drying device and a baking and drying method for an electroslag remelting consumable electrode, which are used for ensuring the end part of the consumable electrode to be dried at a certain temperature at the beginning of electroslag remelting and solving the problems in the background art.
The technical scheme of the invention is as follows:
the utility model provides an electroslag remelting consumable electrode toasts drying device, contains toast drying shell, drier export, export baffle and drier baffle, toast drying shell and be by four curb plates and a bottom plate combination form the section for big end down isosceles trapezoid structure, toast drying shell is equipped with two drier baffles of vertical arrangement in, two drier baffles of vertical arrangement divide toast drying shell inside into left, well, right three parts; the lower part of the baking drying shell is provided with a drying agent outlet, and the drying agent outlet is provided with an outlet baffle plate.
And a plurality of drying agent baffle clamping grooves matched with the drying agent baffles are formed in the side plates of the baking drying shell.
And an outlet baffle clamping groove matched with the outlet baffle is formed in the drying agent outlet at the lower part of the baking and drying shell.
Handles are arranged on the outlet baffle and the drying agent baffle.
The electroslag remelting consumable electrode baking and drying method adopts the electroslag remelting consumable electrode baking and drying device defined above, and is operated according to the following steps:
(1) adding drying agents into the left, middle and right parts in the baking drying shell, wherein the thickness of the drying agent in the middle part is 20-30mm, the thickness of the drying agents in the left and right parts is larger than that of the drying agent in the middle part, and the drying agents are a mixture of sand and lime;
(2) heating the baking and drying shell filled with the drying agent to 200-700 ℃, and preserving heat for more than 2 hours;
(3) placing the consumable electrode tip on a desiccant in the middle portion of the bake drying enclosure;
(4) taking two drying agent baffles which are vertically arranged in the baking drying shell away, enabling drying agents in the left part and the right part of the baking drying shell to flow into the middle part, and burying the end parts of the consumable electrode;
(5) after burying for 2-5h, taking out the consumable electrode, and purging the residual drying agent at the end part of the consumable electrode, so that electroslag remelting can be performed;
the step (1): the mass percentage of lime in the drying agent is 5-15%.
The step (5): and after the consumable electrode is taken out, the residual drying agent at the end part of the consumable electrode is purged by utilizing high-purity argon.
The temperature of the drying agent is 200-700 ℃ when the end part of the consumable electrode is buried, so that the water on the surface of the end part of the consumable electrode can be fully evaporated, meanwhile, the drying agent used by the invention is a mixture of sand and lime, has strong water absorption property while the cost is low, and can fully dry the end part of the consumable electrode because the water absorption capacity of the lime is very strong, so that the end part of the consumable electrode is kept in a dry state at the beginning of electroslag remelting, and H is prevented from increasing at the bottom of an electroslag ingot after the electroslag remelting; meanwhile, caO is one of the components of common premelting slag, and even if the drying agent adhered to the end of the consumable electrode is not completely purged, no obvious influence is caused.
The beneficial effects of the invention are as follows: the self-consumption electrode end part can be ensured to keep a certain temperature and be in a dry state at the beginning of electroslag remelting, the increase of H at the bottom of an electroslag ingot after the electroslag remelting is avoided, and meanwhile, the time of a slag melting unstable period is reduced, so that the quality of the electroslag ingot is improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
in the figure: a baking drying shell 1, a drying agent baffle clamping groove 2, a drying agent outlet 3, an outlet baffle clamping groove 4, an outlet baffle 5, a drying agent baffle 6, a handle 7 and a drying agent 8.
Detailed Description
The invention is further illustrated by way of example with reference to the accompanying drawings.
Referring to fig. 1, an electroslag remelting consumable electrode baking and drying device comprises a baking and drying shell 1, a drying agent outlet 3, an outlet baffle 5 and a drying agent baffle 6, wherein the baking and drying shell 1 is of an isosceles trapezoid structure with a large cross section and a small cross section from top to bottom, two drying agent baffles 6 are vertically arranged in the baking and drying shell 1, and the two drying agent baffles 6 vertically arranged divide the interior of the baking and drying shell 1 into a left part, a middle part and a right part; the lower part of the baking drying shell 1 is provided with a drying agent outlet 3, and the drying agent outlet 3 is provided with an outlet baffle 5.
In this embodiment, referring to fig. 1, a baking and drying case 1 is in a rectangular isosceles trapezoid structure, an upper bottom of the rectangular isosceles trapezoid structure is in an open structure, a lower bottom of the rectangular isosceles trapezoid structure is in a closed structure, and an included angle between the upper bottom and a waist is 45-80 degrees; the inner wall of the baking and drying shell 1 is symmetrically provided with drying agent baffle clamping grooves 2, the drying agent baffle clamping grooves 2 are provided with a plurality of pieces, and each piece of space is 30-50mm. Handles 7 are arranged on the baking and drying shell 1, the outlet baffle 5 and the drying agent baffle 6.
The drying agent 8 is a mechanical mixture of sand and lime, and the lime accounts for 5-15%;
example 1:
baking and drying to prepare the phi 260mm specification Cr12MoV steel consumable electrode subjected to electroslag remelting.
A baking and drying shell 1 with the upper bottom of 1000mm, the lower bottom of 800mm, the height of 400mm and the width of 400mm and a drying agent baffle clamping groove 2 with a distance of 150mm from the center of the baking and drying shell 1 are selected, two drying agent baffles 6 with the height of 450mm are inserted into the selected drying agent baffle clamping groove 2, the distance between the two drying agent baffles is 300mm, then an outlet baffle 5 with the height of 120mm and the width of 220mm is inserted into the outlet baffle clamping groove 4, and the drying agent outlet 3 with the height of 100mm and the width of 200mm is confirmed to be in a closed state.
Filling a drying agent 8 with 90% sand and 10% lime fully mixed to a position 50mm away from the upper edge of the baking drying shell 1 at the outer side of two drying agent baffles 6 in the baking drying shell 1, and filling a drying agent 8 with a thickness of 20mm at the middle position of the two drying agent baffles 6; lifting the baking and drying shell 1 into a heating furnace, heating to 600 ℃, preserving heat for 6 hours, lifting the baking and drying shell 1 out, and placing the baking and drying shell 1 at a vacant position; placing the end parts of the consumable electrodes on the drying agent 8 between the two drying agent baffles 6, dragging the handle 7 above the drying agent baffles 6 upwards, pumping the drying agent baffles 6 away from the baking drying shell 1, enabling the drying agent 8 to flow into the position between the original drying agent baffles 6, burying the end parts of the consumable electrodes, taking out the consumable electrodes after burying for 2 hours, purging the residual drying agent 8 at the end parts of the consumable electrodes by utilizing high-purity argon, and immediately carrying out electroslag remelting; the handle 7 above the outlet baffle 5 is pulled upward to withdraw the outlet baffle 5, allowing the desiccant 8 to flow out through the desiccant outlet 3 and into the container for the next use.
Example 2:
baking and drying to prepare the phi 300mm specification Cr12MoV steel consumable electrode subjected to electroslag remelting.
A baking and drying housing 1 with a top bottom of 1000mm, a bottom of 800mm, a height of 400mm and a width of 400mm and a desiccant baffle slot 2 at a distance of 200mm from the center of the baking and drying housing 1 were selected, two desiccant baffles 6 with a height of 450mm were inserted into the selected desiccant baffle slot 2 with a spacing of 400mm therebetween, and then an outlet baffle 5 with a height of 120mm and a width of 220mm was inserted into the outlet baffle slot 4, confirming that a desiccant outlet 3 with a height of 100mm and a width of 200mm was in a closed state.
The method comprises the steps of loading the drying agent 8 with 92% sand and 8% lime fully mixed to the positions outside two drying agent baffles 6 in a baking drying shell 1 until the positions, which are 50mm away from the upper edge of the baking drying shell 1, of loading the drying agent 8 with the thickness of 30mm to the positions in the middle of the drying agent baffles 6, hanging the baking drying shell 1 into a heating furnace, heating to 500 ℃, preserving heat for 6h, then hanging the baking drying shell 1 out, placing the baking drying shell 1 at an open position, placing the end of a consumable electrode on the drying agent 8 in the middle of the two drying agent baffles 6, dragging a handle 7 above the drying agent baffles 6 upwards, taking the drying agent baffles 6 out of the baking drying shell 1, enabling the drying agent 8 to flow into the positions in the middle of the original drying agent baffles 6, burying the end of the consumable electrode, taking the consumable electrode out after burying for 3h, sweeping the drying agent 8 remained at the end of the consumable electrode by utilizing high-purity argon, immediately conducting electroslag remelting, dragging the handle 7 above an outlet baffle 5, taking the outlet baffle 5 out, enabling the drying agent 8 to flow out through the outlet 3, and loading the drying agent 8 into a container for the next use.
Example 3:
and baking and drying the consumable electrode of the phi 220mm specification Cr12MoV steel which is ready for electroslag remelting.
A baking and drying shell 1 with the upper bottom of 1000mm, the lower bottom of 800mm, the height of 400mm and the width of 350mm and a drying agent baffle clamping groove 2 with a distance of 150mm from the center of the baking and drying shell 1 are selected, two drying agent baffles 6 with the height of 450mm are inserted into the selected drying agent baffle clamping groove 2, the distance between the two drying agent baffles is 300mm, then an outlet baffle 5 with the height of 120mm and the width of 220mm is inserted into the outlet baffle clamping groove 4, and the drying agent outlet 3 with the height of 100mm and the width of 200mm is confirmed to be in a closed state.
The method comprises the steps of loading 85% sand and 15% lime fully mixed drying agent 8 to a position which is 50mm away from the upper edge of a baking drying shell 1 and is outside two drying agent baffles 6 in the baking drying shell 1, loading 25mm thick drying agent 8 to a position which is in the middle of the drying agent baffles 6, hanging the baking drying shell 1 into a heating furnace, heating to 650 ℃, preserving heat for 7h, hanging the baking drying shell 1 out, placing the baking drying shell 1 at an empty position, placing the end of a consumable electrode on the drying agent 8 which is in the middle of the two drying agent baffles 6, dragging a handle 7 above the drying agent baffles 6 upwards, taking the drying agent baffles 6 out of the baking drying shell 1, enabling the drying agent 8 to flow into the position which is in the middle of the original drying agent baffles 6, burying the end of the consumable electrode, taking the consumable electrode out after burying for 4h, sweeping the residual drying agent 8 at the end of the consumable electrode by high-purity argon, immediately conducting electroslag remelting, dragging the handle 7 above an outlet baffle 5 upwards, taking the outlet baffle 5 out, enabling the drying agent 8 to flow out through the drying agent outlet 3, and loading the drying agent 8 into a container for the next use.
The results of electroslag remelting on a non-baked dry consumable electrode of phi 300mm specification Cr12MoV were compared with those of examples 1, 2, and 3, as shown in Table 1 below.
TABLE 1 baking and drying comparative effect
As can be seen from the table, the H increase at the bottom of the electroslag ingot can be caused by not baking and drying the consumable electrode before electroslag remelting, but the H increase at the bottom of the electroslag ingot can not be caused by adopting the device and the using method of the device provided by the invention to bake and dry the consumable electrode; meanwhile, the arc starting time of electroslag remelting can be shortened, and the implementation effect is very obvious.
Claims (1)
1. The baking and drying method for the electroslag remelting consumable electrode is characterized by comprising the following steps of: the method comprises the steps of adopting an electroslag remelting consumable electrode baking and drying device to bake, wherein the device comprises a baking and drying shell (1), a drying agent outlet (3), an outlet baffle (5) and a drying agent baffle (6), wherein the baking and drying shell (1) is of an isosceles trapezoid structure with a large upper section and a small lower section formed by combining four side plates and a bottom plate, two drying agent baffles (6) which are vertically arranged are arranged in the baking and drying shell (1), and the interior of the baking and drying shell (1) is divided into a left part, a middle part and a right part by the two drying agent baffles (6) which are vertically arranged; the lower part of the baking and drying shell (1) is provided with a drying agent outlet (3), the drying agent outlet (3) is provided with an outlet baffle (5), a plurality of drying agent baffle clamping grooves (2) matched with the drying agent baffle (6) are arranged on the side plate of the baking and drying shell (1), and the drying agent outlet (3) at the lower part of the baking and drying shell (1) is provided with an outlet baffle clamping groove (4) matched with the outlet baffle (5); during baking, the method comprises the following steps:
(1) adding drying agents into the left, middle and right parts in the baking and drying shell (1), wherein the thickness of the drying agent in the middle part is 20-30mm, the thickness of the drying agents in the left and right parts is larger than that of the drying agent in the middle part, the drying agents are mixture of sand and lime, and the mass percentage of lime in the drying agents is 5-15%;
(2) heating the baking and drying shell (1) filled with the drying agent to 200-700 ℃, and preserving heat for more than 2 hours;
(3) placing the consumable electrode tip on a desiccant in the middle portion of the bake drying enclosure (1);
(4) taking away two drying agent baffles (6) which are vertically arranged in the baking drying shell (1) to enable drying agents in the left part and the right part of the baking drying shell (1) to flow into the middle part and bury the end parts of the consumable electrode;
(5) after burying for 2-5h, taking out the consumable electrode, and purging the residual drying agent at the end part of the consumable electrode by using high-purity argon gas, so that electroslag remelting can be carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210735261.2A CN115265104B (en) | 2022-06-27 | 2022-06-27 | Electroslag remelting consumable electrode baking and drying device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210735261.2A CN115265104B (en) | 2022-06-27 | 2022-06-27 | Electroslag remelting consumable electrode baking and drying device and method thereof |
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| Publication Number | Publication Date |
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| CN115265104A CN115265104A (en) | 2022-11-01 |
| CN115265104B true CN115265104B (en) | 2023-10-27 |
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| CN (1) | CN115265104B (en) |
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| CN214509060U (en) * | 2021-01-20 | 2021-10-29 | 扬州大学 | Dry flower device of large-scale flowers material vertical drying |
| CN113654303A (en) * | 2021-08-05 | 2021-11-16 | 江西昂仕新材料科技有限公司 | Drying equipment is used back in drier production |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6772534B2 (en) * | 2002-03-15 | 2004-08-10 | Bel-Art Products, Inc. | Apparatus and method for moisture control |
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2022
- 2022-06-27 CN CN202210735261.2A patent/CN115265104B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008100938A (en) * | 2006-10-18 | 2008-05-01 | Yonetomi Yasu | Apparatus for drying plant body and method for drying the same |
| CN102338550A (en) * | 2011-07-12 | 2012-02-01 | 深圳市沃特玛电池有限公司 | Drying device of battery pole shoe and drying method |
| CN206247763U (en) * | 2016-12-06 | 2017-06-13 | 漯河医学高等专科学校 | A kind of drier |
| CN207133107U (en) * | 2017-09-20 | 2018-03-23 | 中南大学湘雅医院 | A kind of transmission electron microscope biological tissue embedding block high-temperature baking device |
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| Publication number | Publication date |
|---|---|
| CN115265104A (en) | 2022-11-01 |
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