CN115139675A - Hard alloy workpiece surface printing method - Google Patents
Hard alloy workpiece surface printing method Download PDFInfo
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- CN115139675A CN115139675A CN202210608183.XA CN202210608183A CN115139675A CN 115139675 A CN115139675 A CN 115139675A CN 202210608183 A CN202210608183 A CN 202210608183A CN 115139675 A CN115139675 A CN 115139675A
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- hard alloy
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000000956 alloy Substances 0.000 title claims abstract description 28
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 28
- 238000003854 Surface Print Methods 0.000 title description 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 239000003960 organic solvent Substances 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000010330 laser marking Methods 0.000 description 3
- 239000002932 luster Substances 0.000 description 3
- 230000003578 releasing effect Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/28—Printing on other surfaces than ordinary paper on metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Thermal Sciences (AREA)
- Toxicology (AREA)
- Printing Methods (AREA)
Abstract
The invention relates to the technical field of workpiece lettering, in particular to a method for lettering on the surface of a hard alloy workpiece, which comprises the following steps: a) Placing a batch of workpieces on a printing device; b) Adding high-temperature ink into the printing equipment, starting the printing equipment, printing product information on the surface of a workpiece, and taking the workpiece down from the printing equipment; c) And (4) sending the workpiece into a heating furnace for heat treatment, and taking out the workpiece after the heat treatment is finished. The high-temperature printing ink has the characteristic of high temperature resistance, can keep clear lettering in a heat treatment process, has small dot gain rate, eliminates the internal stress of a workpiece through the heat treatment process, and simultaneously oxidizes and reacts the high-temperature printing ink with the surface of the workpiece so as to be solidified on the surface of the workpiece, so that the finished product has clear product information, is not easy to scratch and damage, and simultaneously improves the quality and the service life of the workpiece.
Description
Technical Field
The invention relates to the technical field of workpiece lettering, in particular to a method for lettering on the surface of a hard alloy workpiece.
Background
In order to facilitate the tracing of customers to products, product models or numbers and the like are often required to be printed on the products, when the surface of some metal products, particularly hard alloys, is printed, a laser marking mode is often adopted for printing characters, but the surface of the products is easily damaged, stress concentration is caused, and the quality and the service life of workpieces are influenced.
For example, the chinese patent application No. 202110489911.5, entitled stamping and printing equipment for metal processing, includes: the base is used for mounting the whole equipment; the top of the base is provided with a plurality of supporting frames; the top of the base is provided with a driving and conveying mechanism; the stamping and printing mechanism is arranged at the top of the base. Although the invention optimizes the process of stamping and printing and improves the working efficiency, the invention inevitably damages the surface of the workpiece.
Disclosure of Invention
The invention aims to provide a hard alloy workpiece surface lettering method, which is characterized in that after high-temperature ink is printed on the surface of a workpiece, the high-temperature ink is solidified on the surface of the workpiece through heat treatment, so that the printing of product information is completed, the internal stress of the workpiece can be eliminated, the mechanical property is improved, the damage to the surface of the workpiece can be avoided, and the product information is prevented from being accidentally eliminated.
In order to achieve the purpose, the invention adopts the following technical scheme: a hard alloy workpiece surface lettering method comprises the following steps: a) Placing a batch of workpieces on a printing device; b) Adding high-temperature ink into a printing device, starting the printing device, printing product information on the surface of a workpiece, and taking the workpiece down from the printing device; c) And (4) sending the workpiece into a heating furnace for heat treatment, and taking out the workpiece after the heat treatment is finished. The high-temperature ink is sintered at the temperature of 430-850 ℃, and after high-temperature sintering, the ink is firmly cladded/sintered/sealed with glass, metal, ceramic and the like to form a hard, heat-resistant, weather-resistant and chemical-resistant coating. The high-temperature printing ink can be purchased and obtained through conventional market channels, the high-temperature printing ink can keep clear printing in the heat treatment process, the dot gain rate is very small, the internal stress of a workpiece is eliminated through the heat treatment process, meanwhile, the high-temperature printing ink and the surface of the workpiece are subjected to oxidation reaction, and therefore solidification is achieved, not only is the product information clear after a finished product, but also the surface of the workpiece cannot be affected, unless the surface of the workpiece is damaged, the product information cannot be affected, the information definition or the information keeping time limit is greatly improved, and the quality and the service life of the workpiece are also improved.
Preferably, after the workpiece is fed into the heating furnace in the step c), the temperature is increased to T1, the temperature is continuously increased to T2 after the workpiece is kept for a period of time, and the temperature is reduced after the workpiece is kept for a period of time, so that the tempering operation is completed. The purpose of raising the temperature to T1 is to slowly release the internal stress of the workpiece through tempering, improve the mechanical property of the workpiece, the purpose of raising the temperature to T2 is to make the surface of the workpiece and high-temperature ink generate oxidation reaction, so that the ink is solidified on the surface of the workpiece, and the range of the temperature T2 has great influence on the finally formed printing effect: the temperature T2 is lower, the ink has insufficient oxidation reaction with the surface of the workpiece at high temperature, and the printed content on the surface of the final finished product can be erased by a chemical reagent; the temperature T2 is too high, the metallographic phase of the hard alloy can be influenced, metal ink patterns can be formed in the non-printed area of the workpiece, the workpiece becomes dark after tempering, the metallic luster is lacked, and the appearance of the product is influenced.
Preferably, in step c), the temperature T1 ranges from 100 ℃ to 240 ℃. In the temperature range, the internal stress of the hard alloy is slowly released, so that the effect of eliminating residual stress is achieved, the higher hardness and the wear resistance of the hard alloy can be kept, and the effect of releasing the stress cannot be achieved when the temperature is too low.
Preferably, in step c), the temperature of the heating furnace is slowly raised to the temperature T1 and then maintained for 2 to 8 hours. The temperature is kept for 2-8 hours, so that the internal stress of the workpiece can be fully released, and the workpiece is prepared for the next working procedure.
Preferably, in step c), the temperature T2 ranges from 370 ℃ to 450 ℃. When the temperature is lower than 370 ℃, the high-temperature ink can not fully react with the workpiece, the printed product information can be erased after multiple wiping by adding tartaric acid into clear water, and the high-temperature ink is not well solidified on the surface of the workpiece; when the temperature is higher than 450 ℃, the product is subjected to internal grinding, plane grinding and other processes before heat treatment, the surface finish degree is high, on one hand, metal ink patterns are easily generated in the non-printed area on the surface of the product, the workpiece is dark after tempering, the metallic luster is lacked, the product information is relatively unclear, on the other hand, the metallographic structure of the hard alloy is easily slightly changed, and the change of mechanical properties influenced by other influences such as the change of the roughness of the surface of the workpiece can be caused.
Preferably, in step c), after the temperature is raised to T2, the temperature is maintained for 20 to 32 hours, and then the temperature of the whole heating furnace is lowered. Keeping for 20-32 hours to ensure that the high-temperature printing ink fully reacts with the workpiece, completely eliminating internal stress through water cooling or air cooling, wherein the cooling process time is determined by the temperature, and generally, the summer time is longer, and the winter time is shorter.
Preferably, after step b) is completed, before step c), the high-temperature ink is waited for drying, and then whether the printed high-temperature ink meets the standard is observed, if so, step c) is executed, and if not, step a) is executed again. Whether the high-temperature printing ink is flat or not after being printed on the surface of a workpiece is observed after the printing ink is dried, whether multiple layers or ripples exist or not is guaranteed, printing information before the printing ink is sent into a heating furnace is clear and visible, namely the printing ink is determined to be in accordance with a standard, and if the printing ink is not in accordance with the standard, unclear product information after the heating is finished is difficult to remove, so that the processing cost is increased.
Preferably, after step b) is completed, if the printed high-temperature ink is found to be not qualified, the high-temperature ink is washed by using an organic solvent, and after the washing is completed, step a) is executed again. Before re-printing, the ink which is mistakenly printed or not clearly printed needs to be cleaned, and the high-temperature ink can be fully dissolved by the organic solvent, so that the ink is cleaned.
Preferably, in step b), before each printing device works, whether the high-temperature ink storage is sufficient or not needs to be checked, and if the high-temperature ink storage is insufficient, the high-temperature ink needs to be added in time. When the condition that the high-temperature ink is insufficient occurs, the printed workpiece product information is easy to be unclear, the phenomenon that the workpieces in the whole batch need to be reworked and reprinted is caused, the waste of the high-temperature ink and the organic solvent is easy to be caused, the working procedures are wasted, the processing cost is improved, and the economic benefit is reduced.
The invention has the advantages that: through heat treatment, the typeface formed by printing the high-temperature ink is solidified on the surface of the workpiece, the printing of product information is completed, the internal stress of the workpiece can be eliminated, the mechanical property is improved, the damage to the surface of the workpiece can be avoided, and the product information is prevented from being eliminated accidentally.
Drawings
FIG. 1 is a flow chart of the operation of the printing method for the surface of a hard alloy workpiece according to the present invention.
FIG. 2 is a corresponding process equipment diagram of the printing method for the surface of the hard alloy workpiece.
Fig. 3 is a sample diagram of the surface of the hard alloy workpiece after laser marking.
FIG. 4 is a sample diagram showing that the printing of the printing method for the surface of the hard alloy workpiece according to the present invention meets the standard.
FIG. 5 is a sample diagram showing that the printing of the printing method for the surface of a cemented carbide workpiece according to the present invention does not meet the standard.
Detailed Description
The invention is further described below with reference to the figures and the specific embodiments.
As shown in fig. 1 and 2, a hard alloy workpiece surface printing method includes the following steps: a) Placing a batch of workpieces on a printing apparatus 1; b) Adding high-temperature ink into the printing equipment 1, starting the printing equipment 1, printing product information on the surface of a workpiece, and taking the workpiece down from the printing equipment 1; c) Sending the workpiece into a heating furnace 2 from the direction shown in figure 2 for heat treatment, raising the temperature to 160-240 ℃ slowly, keeping the temperature for 2 hours, raising the temperature to 370-400 ℃, keeping the temperature for 24 hours, then closing the heating operation of the heating furnace 2, starting external circulation ventilation, slowly releasing the heat of the workpiece by blowing away high-temperature gas in the furnace body, gradually cooling the workpiece to 70 ℃ in summer, reducing the time consumption in winter for about 5-6 hours, opening a furnace door of the heating furnace 2 after the process is finished, cooling the workpiece to room temperature by air, and taking out the workpiece after the cooling is finished. If the product is printed by using laser marking, as shown in fig. 3, the surface of the product is damaged to cause stress concentration, and the mechanical properties of the product are affected. The high-temperature printing ink is used for printing characters, such as Jessi ink, S75-01 and high-temperature glass ink, has the characteristic of high temperature resistance, can keep clear characters in a heat treatment process, the dot gain rate is small, through the heat treatment process, the internal stress of a workpiece is eliminated, and meanwhile, the high-temperature printing ink is subjected to oxidation reaction with the surface of the workpiece, so that the high-temperature glass ink is solidified, the product information is clear after a finished product is obtained, the surface of the workpiece cannot be affected, the product information cannot be affected unless the surface of the workpiece is damaged, the information definition or the retention time limit is greatly improved, the quality and the service life of the workpiece are also improved, meanwhile, the heat treatment time is shortened to a certain extent, the economic benefit can be ensured, the production efficiency of the product is improved, and the product quality difference is small.
The temperature is increased to 160-240 ℃ for the first time, the internal stress of the hard alloy is slowly released in the temperature range, the effect of eliminating residual stress is achieved, the higher hardness and the wear resistance of the hard alloy can be kept, but the stress releasing effect cannot be achieved when the temperature is too low; the temperature is raised to 370-400 ℃ for the second time, in the temperature range, the high-temperature ink is enabled to be nonvolatile and oxidized with the surface of the workpiece, when the temperature is lower than 370 ℃, the high-temperature ink and the workpiece can not fully react, printed product information can be dissolved by chemical reagents, when the temperature is higher than 450 ℃, on one hand, metallic ink patterns can be easily generated in an area where the printing is not printed on the surface of the product, after tempering, the workpiece is dark and lacks of metallic luster, relatively, the product information is unclear, on the other hand, the metallographic structure of the hard alloy can be easily slightly changed, and changes which influence the mechanical properties such as change of roughness on the surface of the workpiece can be possibly generated.
As shown in fig. 1, after step b) is completed, before step c), after the high-temperature ink is dried, observing whether the printed high-temperature ink meets the standard, if the printed high-temperature ink meets the standard, as shown in fig. 4, the font on the surface of the workpiece is clear, executing step c), if the printed high-temperature ink does not meet the standard, as shown in fig. 5, cleaning the high-temperature ink by using an organic solvent, and after the cleaning is finished, executing step a) again. After the printing ink is dried, whether the high-temperature printing ink is printed on the surface of a workpiece is flat or not is observed, whether multiple layers or ripples exist or not is guaranteed, printed information before the printing ink is sent into the heating furnace 2 is clear and visible, otherwise, unclear product information after the printing ink is heated is difficult to remove, and the processing cost is increased.
As shown in fig. 1, in step b), before the printing apparatus 1 works, it is necessary to check whether the high-temperature ink is stored in sufficient quantity, and if not, it is necessary to add the high-temperature ink in time. When the condition that the high-temperature ink is insufficient occurs, the printed workpiece product information is easy to be unclear, the phenomenon that the workpieces in the whole batch need to be reworked and reprinted is caused, the waste of the high-temperature ink and the organic solvent is easy to be caused, the working procedures are wasted, the processing cost is improved, and the economic benefit is reduced.
Claims (9)
1. A hard alloy workpiece surface lettering method is characterized by comprising the following steps:
a) Placing a batch of workpieces on a printing device;
b) Adding high-temperature ink into a printing device, starting the printing device, printing product information on the surface of a workpiece, and taking the workpiece down from the printing device;
c) And (4) conveying the workpiece into a heating furnace for heat treatment, and taking out the workpiece after the heat treatment is finished.
2. The method for printing characters on the surface of a hard alloy workpiece according to claim 1, wherein the workpiece is fed into the heating furnace in the step c), the temperature is increased to T1 firstly, the workpiece is kept for a period of time, then the temperature is increased to T2 continuously, the workpiece is kept for a period of time and then is cooled, and the tempering operation is completed.
3. The method for printing characters on the surface of a hard alloy workpiece according to claim 2, wherein the temperature T1 in the step c) is in the range of 100 ℃ to 240 ℃.
4. The method for printing characters on the surface of a hard alloy workpiece according to claim 3, wherein in the step c), the temperature of the heating furnace is slowly raised to the temperature T1 and then kept for 2 to 8 hours.
5. The method for printing on the surface of a hard alloy workpiece according to claim 2, wherein the temperature T2 in the step c) is in the range of 370 ℃ to 450 ℃.
6. The method for printing characters on the surface of the hard alloy workpiece according to claim 5, wherein in the step c), after the temperature is raised to T2, the temperature is maintained for 20 to 32 hours, and then the temperature of the whole heating furnace is reduced.
7. The method for printing characters on the surface of the hard alloy workpiece according to claim 1, wherein after the step b) is finished, the printed high-temperature ink is observed whether the printed high-temperature ink meets the standard or not after the high-temperature ink is dried before the step c) is carried out, and if the printed high-temperature ink meets the standard, the step c) is carried out, and if the printed high-temperature ink does not meet the standard, the step a) is carried out again.
8. The method for printing characters on the surface of a hard alloy workpiece according to claim 7, wherein after the step b) is finished, if the printed high-temperature ink is found to be not qualified, the high-temperature ink is cleaned by using an organic solvent, and after the cleaning is finished, the step a) is executed again.
9. The method for printing on the surface of the hard alloy workpiece according to claim 1, wherein in the step b), before each printing device works, whether the storage amount of the high-temperature ink is sufficient or not needs to be checked, and if the storage amount of the high-temperature ink is insufficient, the high-temperature ink needs to be added in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210608183.XA CN115139675B (en) | 2022-05-31 | 2022-05-31 | Hard alloy workpiece surface printing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210608183.XA CN115139675B (en) | 2022-05-31 | 2022-05-31 | Hard alloy workpiece surface printing method |
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| CN115139675A true CN115139675A (en) | 2022-10-04 |
| CN115139675B CN115139675B (en) | 2024-05-28 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB695153A (en) * | 1951-05-07 | 1953-08-05 | High Duty Alloys Ltd | Improvements in or relating to the heat treatment of aluminium alloys |
| GB8322406D0 (en) * | 1983-08-19 | 1983-09-21 | Hss Sands & Eng Ltd | Metal coating and marking processes |
| CN1930311A (en) * | 2004-01-20 | 2007-03-14 | 普尔曼工业公司 | Method and apparatus for the continuous fabrication of shaped metal articles |
| CN102394156A (en) * | 2011-11-10 | 2012-03-28 | 天津德芃科技集团有限公司 | Fluoroplastic electric wire and cable surface lettering method and device |
| CN102390192A (en) * | 2011-08-24 | 2012-03-28 | 上海宝钢包装股份有限公司 | UV printing and coating process for metal lettering cover |
| CN103730056A (en) * | 2013-02-19 | 2014-04-16 | 立德高科(北京)数码科技有限责任公司 | Anti-counterfeit mark printed on surface of metal |
| JP2015129229A (en) * | 2014-01-08 | 2015-07-16 | 株式会社ナード研究所 | Ink for high temperature |
| CN104890362A (en) * | 2015-05-18 | 2015-09-09 | 山东泰山华岳玻璃有限公司 | Glass deep machining process allowing secondary machining and colorfast patterns |
| CN108527868A (en) * | 2017-12-04 | 2018-09-14 | 东莞远铸智能科技有限公司 | The heat treatment method of 3D printing workpiece |
| CN112457706A (en) * | 2020-11-23 | 2021-03-09 | 宁波恒浩广新型电子材料有限公司 | Heat dissipation ink, preparation method and preparation method of heat dissipation shielding case |
| CN114228361A (en) * | 2021-12-17 | 2022-03-25 | 北京航星机器制造有限公司 | Coding method for digital identification |
| CN114407571A (en) * | 2022-01-17 | 2022-04-29 | 蚌埠权盛机械制造有限公司 | Manufacturing process of high-temperature sintered glass decorative picture |
-
2022
- 2022-05-31 CN CN202210608183.XA patent/CN115139675B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB695153A (en) * | 1951-05-07 | 1953-08-05 | High Duty Alloys Ltd | Improvements in or relating to the heat treatment of aluminium alloys |
| GB8322406D0 (en) * | 1983-08-19 | 1983-09-21 | Hss Sands & Eng Ltd | Metal coating and marking processes |
| CN1930311A (en) * | 2004-01-20 | 2007-03-14 | 普尔曼工业公司 | Method and apparatus for the continuous fabrication of shaped metal articles |
| CN102390192A (en) * | 2011-08-24 | 2012-03-28 | 上海宝钢包装股份有限公司 | UV printing and coating process for metal lettering cover |
| CN102394156A (en) * | 2011-11-10 | 2012-03-28 | 天津德芃科技集团有限公司 | Fluoroplastic electric wire and cable surface lettering method and device |
| CN103730056A (en) * | 2013-02-19 | 2014-04-16 | 立德高科(北京)数码科技有限责任公司 | Anti-counterfeit mark printed on surface of metal |
| JP2015129229A (en) * | 2014-01-08 | 2015-07-16 | 株式会社ナード研究所 | Ink for high temperature |
| CN104890362A (en) * | 2015-05-18 | 2015-09-09 | 山东泰山华岳玻璃有限公司 | Glass deep machining process allowing secondary machining and colorfast patterns |
| CN108527868A (en) * | 2017-12-04 | 2018-09-14 | 东莞远铸智能科技有限公司 | The heat treatment method of 3D printing workpiece |
| CN112457706A (en) * | 2020-11-23 | 2021-03-09 | 宁波恒浩广新型电子材料有限公司 | Heat dissipation ink, preparation method and preparation method of heat dissipation shielding case |
| CN114228361A (en) * | 2021-12-17 | 2022-03-25 | 北京航星机器制造有限公司 | Coding method for digital identification |
| CN114407571A (en) * | 2022-01-17 | 2022-04-29 | 蚌埠权盛机械制造有限公司 | Manufacturing process of high-temperature sintered glass decorative picture |
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| CN115139675B (en) | 2024-05-28 |
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