CN112676500A - Watchband forming process - Google Patents
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- CN112676500A CN112676500A CN202011400394.1A CN202011400394A CN112676500A CN 112676500 A CN112676500 A CN 112676500A CN 202011400394 A CN202011400394 A CN 202011400394A CN 112676500 A CN112676500 A CN 112676500A
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 230000008569 process Effects 0.000 title claims abstract description 56
- 238000001125 extrusion Methods 0.000 claims abstract description 50
- 238000005097 cold rolling Methods 0.000 claims abstract description 46
- 238000000137 annealing Methods 0.000 claims abstract description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005096 rolling process Methods 0.000 claims abstract description 19
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims abstract description 14
- 238000010583 slow cooling Methods 0.000 claims abstract description 13
- 239000011265 semifinished product Substances 0.000 claims abstract description 12
- 238000011049 filling Methods 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 27
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 18
- 229910001220 stainless steel Inorganic materials 0.000 claims description 18
- 239000010935 stainless steel Substances 0.000 claims description 18
- 238000005868 electrolysis reaction Methods 0.000 claims description 16
- 230000007797 corrosion Effects 0.000 claims description 14
- 238000005260 corrosion Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000005224 laser annealing Methods 0.000 claims description 12
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- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
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- 238000006243 chemical reaction Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
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- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
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- 239000000047 product Substances 0.000 claims description 3
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- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
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- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
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Abstract
The invention discloses a watchband forming process, which comprises the following steps: carrying out 12-pass extrusion cold rolling on the martensitic stainless steel wire to manufacture the watchband section of the watchband; annealing the martensitic stainless steel wire rod between the extrusion cold rolling and the annealing, wherein the rolling deformation rate of each extrusion cold rolling is less than or equal to 65 percent compared with that of the previous cold rolling, and the annealing temperature is 800-900 ℃; and calculating the allowance size of the semi-finished product inner hook of the watchband section, and forming the watchband section after annealing and slow cooling. The intelligent wearable watchband is completed through dozens of times of extrusion, cold rolling and annealing processes, the change of size and shape and position is controlled in each process, the allowance size of the inner hook of the semi-finished product is accurately calculated, and the extrusion forming process is completed through the process of filling the iron wire with a special die.
Description
Technical Field
The invention belongs to the technical field of watchband forming processing, and particularly relates to a watchband forming process.
Background
The watch band is a general term for the wrist fixing effective part of the watch. Watchband material is various, divide into soft materials such as leather, noble metal material and other metal material etc. usually, in other metal material: titanium metal-because of under the hot tide zone of the all steel wrist-watch, titanium metal is gradually brand-new and exposed in the horn, the titanium metal is found in the earth's outer casing, its appearance can be bright and lustrous metal, or silver gray, dark gray powder, titanium metal is a kind of light and handy, hard, heat-resisting, cold-resistant metal, there is a layer of oxide film on the surface, can prevent wearing and tarnishing; tungsten titanium alloy-tungsten carbide and titanium carbide powder are pressed into a blank at the pressure of 1000 Pa, then a die is cast, the blank is sintered into a part with extremely high density at the high temperature of 1450 ℃ in a special smelting furnace, and finally the tungsten titanium alloy with flash brightness is prepared after a plurality of procedures and grinding by diamond powder, so that the tungsten titanium alloy with good wear resistance is obtained; copper-in wristwatches, copper is the best, it is cheap, and it is extremely easy to process, it is mainly applied to movements, most movements use is a brass alloy splint. The color of the movement is generally seen to be yellow and white, the yellow movement is generally plated with titanium oxide, and the white movement is plated with zinc-nickel alloy.
In addition, the watchband is processed by using other metals, steel is divided into steel, a chromium-nickel compound and refined steel, and a chromium-nickel compound, the processing difficulty of stainless steel is high, the corrosion resistance and the wear resistance are better than those of the former, the surface can be plated or not plated, and only polishing or sand blasting and sand drawing treatment are carried out, so that the appearance effect with different effects and stereoscopic impression is formed. However, there is a need to provide a watchband forming process in the actual watchband processing process, and a conventional processing method generally uses CNC equipment to process the inner hook portion, but the CNC equipment needs to use a large amount of CNC equipment during processing, the labor cost of CNC is relatively high, and the workpiece processing cycle is relatively long.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and the band section of the band is manufactured by performing 12-pass extrusion cold rolling on a martensitic stainless steel wire; annealing the martensitic stainless steel wire rod between the extrusion cold rolling and the cold rolling, wherein the rolling deformation rate of each extrusion cold rolling is less than or equal to 65 percent compared with that of the previous cold rolling, the annealing temperature is 800-900 ℃, each annealing is cooled to be below 500 ℃ in a slow cooling mode, and the cooling medium is air; calculating the allowance size of the semi-finished product inner hook of the watchband section, forming the watchband section through annealing and slow cooling, filling an iron wire into the watchband section by using a mold, then carrying out extrusion forming, and continuously carrying out extrusion forming on the watchband section end-to-end necklace of the watchband so as to connect the watchband sections end-to-end; the manufacturing method is completed through dozens of times of extrusion, cold rolling and annealing processes, the change of size and shape and position is controlled in each process, the allowance size of the inner hook of the semi-finished product is accurately calculated, and the extrusion forming process is completed through the process of filling iron wires with special dies.
In order to achieve the purpose, the invention provides the following technical scheme: a watchband forming process comprises the following steps:
s1, carrying out 12-pass extrusion cold rolling on the martensitic stainless steel wire to manufacture the watchband section of the watchband;
s2, annealing the martensitic stainless steel wire rod between the extrusion cold rolling and the cold rolling, wherein the rolling deformation rate of each extrusion cold rolling is less than or equal to 65 percent compared with that of the previous cold rolling, the annealing temperature is 800-900 ℃, each annealing is cooled to be below 500 ℃ in a slow cooling mode, and the cooling medium is air;
s3, calculating the allowance size of the semi-finished product inner hook of the watchband section, forming the watchband section through annealing and slow cooling, filling and plugging iron wires by using a mold, then carrying out extrusion forming on the watchband section, and carrying out end-to-end necklace on the watchband section of the watchband and continuously carrying out end-to-end connection on the watchband section through extrusion forming.
Preferably, the diameter of the wire rod is 12 +/-0.2 mm, and the material of the wire rod is 12Cr13 stainless steel.
Preferably, in step S2, the temperature generated during the cold extrusion drawing is 40-50 ℃ and the rolling reduction per cold extrusion drawing is 0.2mm ±, and the annealing temperature is set to 860 ℃.
Preferably, the roller used in the extrusion cold rolling treatment is provided with an annular bulge or an annular recess on the curved surface for rolling, the annular bulge and the annular recess are concentrically arranged with the roller corresponding to the annular recess, and the annular bulge and the annular recess are in shape-matching with the cross section of the wire rod after each rolling.
Preferably, after step S3, the surface of the watch band formed by joining the plurality of supported watch band segments end to end is subjected to electrolytic treatment, and after the electrolytic treatment, the watch band is washed and then dried.
Preferably, the heat treatment process of step S2 is performed by a laser annealing furnace, the laser pulse frequency is 500Hz, and the laser energy density is 300-2The laser annealing time is 10-30ns, and the output power of the laser annealing furnace is 10W.
Preferably, microwave vibration treatment is adopted between the surface electrolysis treatment and the rolling treatment and the annealing treatment of the formed watchband, the vibration frequency is 500MHz-9GHz, the microwave vibration treatment time is 20s-150s, and the power of a microwave oscillator is 4000-9000W.
Preferably, a plurality of laser heads are arranged in the laser annealing furnace, and the arrangement shape of all the laser heads is matched with the section shape of the part to be annealed.
Preferably, a polytetrafluoroethylene plastic film is adhered to the surface of the part before surface electrolysis treatment, and a plurality of through holes for ensuring the accuracy of the surface corrosion position are formed in the plastic film;
the surface electrolysis treatment adopts mixed acid solution corrosion treatment, the treatment time is 1s-15s, and the mixed acid solution is composed of 80% phosphoric acid, 10% water, 5% nitric acid and 5% acetic acid or composed of 50% phosphoric acid, 15% water, 5% hydrofluoric acid and 30% acetic acid;
the surface electrolytic treatment process is as follows: adding phosphoric acid, nitric acid and acetic acid into water at 20-25 deg.C, stirring to dissolve completely, and making into electrolyte; putting the prepared electrolyte and the stainless steel part into an electrolytic bath, electrifying, adjusting electrolytic parameters, carrying out surface electrolytic treatment on the surface of the stainless steel material, taking the stainless steel part out of the electrolytic bath, washing the surface with clear water, washing with absolute ethyl alcohol, and drying with a blower to obtain a processed finished product;
wherein the electrolysis parameters are as follows: the current density is 0.1-2A/cm2The distance between the electrodes is 0.15-0.3m, the temperature of the electrolyte is 20-40 ℃, and the electrolytic reaction rate is 50 mu m/min.
The invention has the technical effects and advantages that: compared with the prior art, the watchband forming process provided by the invention has the advantages that the watchband sections of the watchband are manufactured by performing 12-pass extrusion cold rolling on the martensitic stainless steel wire; annealing the martensitic stainless steel wire rod between the extrusion cold rolling and the cold rolling, wherein the rolling deformation rate of each extrusion cold rolling is less than or equal to 65 percent compared with that of the previous cold rolling, the annealing temperature is 800-900 ℃, each annealing is cooled to be below 500 ℃ in a slow cooling mode, and the cooling medium is air; calculating the allowance size of the semi-finished product inner hook of the watchband section, forming the watchband section through annealing and slow cooling, filling an iron wire into the watchband section by using a mold, then carrying out extrusion forming, and continuously carrying out extrusion forming on the watchband section end-to-end necklace of the watchband so as to connect the watchband sections end-to-end;
the intelligent wearable watchband is completed through dozens of times of extrusion, cold rolling and annealing processes, the change of size and shape and position is controlled in each process, the allowance size of the inner hook of the semi-finished product is accurately calculated, and the extrusion forming process is completed through the process of filling the iron wire with a special die.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
FIG. 1 is a process flow diagram of a watchband forming process of the present invention;
FIG. 2 is a schematic structural diagram of a molding method of the watchband molding process of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. 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.
Examples
A watchband forming process comprises the following steps:
s1, carrying out 12-pass extrusion cold rolling on the martensitic stainless steel wire to manufacture the watchband section of the watchband;
s2, annealing the martensitic stainless steel wire rod between the extrusion cold rolling and the cold rolling, wherein the rolling deformation rate of each extrusion cold rolling is less than or equal to 65 percent compared with that of the previous cold rolling, the annealing temperature is 800-900 ℃, each annealing is cooled to be below 500 ℃ in a slow cooling mode, and the cooling medium is air;
s3, calculating the allowance size of the semi-finished product inner hook of the watchband section, forming the watchband section through annealing and slow cooling, filling and plugging iron wires by using a mold, then carrying out extrusion forming on the watchband section, and carrying out end-to-end necklace on the watchband section of the watchband and continuously carrying out end-to-end connection on the watchband section through extrusion forming.
The process is completed through dozens of times of extrusion, cold rolling and annealing processes, the change of the size and the shape and position is controlled in each process, the allowance size of the inner hook of the semi-finished product is accurately calculated, and the process of filling the iron wire with a special die is utilized to complete each extrusion forming process;
the diameter of the wire rod is 12 +/-0.2 mm, and the material of the wire rod is 12Cr13 stainless steel. In step S2, the temperature generated in the extrusion cold-rolling drawing process is 40-50 ℃, the rolling reduction of each extrusion cold-rolling is 0.2mm +/-and the annealing temperature is set to 860 ℃.
The roller used in the extrusion cold rolling treatment is provided with an annular bulge or an annular recess on a curved surface for rolling, the annular bulge and the annular recess are concentrically arranged with the corresponding roller, and the annular bulge and the annular recess are in shape-matching with the section shape of the wire rod after each rolling.
After step S3, it is necessary to perform surface electrolysis on the watchband formed by joining the plurality of watchband segments supported end to end, wash the watchband after electrolysis, and dry the watchband after washing. The heat treatment process of step S2 adopts a laser annealing furnace, the laser pulse frequency is 500Hz, the laser energy density is 300-2The laser annealing time is 10-30ns, and the output power of the laser annealing furnace is 10W.
And adopting microwave vibration treatment between the surface electrolysis treatment and the rolling treatment and annealing treatment of the formed watchband, wherein the vibration frequency is 500MHz-9GHz, the microwave vibration treatment time is 20s-150s, and the power of a microwave oscillator is 4000-. A plurality of laser heads are arranged in the laser annealing furnace, and the arrangement shape of all the laser heads is matched with the section shape of the part to be annealed.
Stainless steel is generally difficult to corrode by chemical reaction with a medium due to its special metallographic structure and surface passivation film, but cannot be corroded under any conditions. Stainless steel can also be corroded by slow chemical and electrochemical reaction with a corrosion medium under the conditions of the existence of the corrosion medium and inducement (such as scratching, splashing, cutting slag and the like), and the corrosion phenomenon, particularly pitting corrosion and crevice corrosion, is generated due to quite high corrosion speed under certain conditions. The corrosion mechanism of the stainless steel part is mainly electrochemical corrosion.
Adhering a polytetrafluoroethylene plastic film to the surface of the part before surface electrolysis treatment, wherein the plastic film is provided with a plurality of through holes for ensuring the surface corrosion position to be accurate; the surface electrolysis treatment adopts mixed acid solution corrosion treatment, the treatment time is 1s-15s, and the mixed acid solution is composed of 80% phosphoric acid, 10% water, 5% nitric acid and 5% acetic acid or composed of 50% phosphoric acid, 15% water, 5% hydrofluoric acid and 30% acetic acid; the surface electrolytic treatment process is as follows: adding phosphoric acid, nitric acid and acetic acid into water at 20-25 deg.C, stirring to dissolve completely, and making into electrolyte; putting the prepared electrolyte and the stainless steel part into an electrolytic bath, electrifying, adjusting electrolytic parameters, carrying out surface electrolytic treatment on the surface of the stainless steel material, taking the stainless steel part out of the electrolytic bath, washing the surface with clear water, washing with absolute ethyl alcohol, and drying with a blower to obtain a processed finished product; wherein the electrolysis parameters are as follows: the current density is 0.1-2A/cm2The distance between the electrodes is 0.15-0.3m, the temperature of the electrolyte is 20-40 ℃, and the electrolytic reaction rate is 50 mu m/min.
Through carrying out surface electrolytic treatment to the watchband festival, adopt the less chemical substance of harm through electrolytic polishing, and whole process needs a small amount of water and easy operation, can prolong the attribute of stainless steel after carrying out electrolytic polishing surface treatment, play and let the effect that the stainless steel postpones the corruption. In the specific use process, the surface layer generated by electrolytic treatment can protect the surface of the watchband knot, so that the service time of the watchband is prolonged, and meanwhile, the surface of the watchband keeps gloss in the use process of the watchband, so that a wearer obtains better wearing and using experience.
In summary, compared with the prior art, the watchband forming process provided by the invention has the advantages that the watchband sections of the watchband are manufactured by performing 12-pass extrusion cold rolling on the martensitic stainless steel wire; annealing the martensitic stainless steel wire rod between the extrusion cold rolling and the cold rolling, wherein the rolling deformation rate of each extrusion cold rolling is less than or equal to 65 percent compared with that of the previous cold rolling, the annealing temperature is 800-900 ℃, each annealing is cooled to be below 500 ℃ in a slow cooling mode, and the cooling medium is air; calculating the allowance size of the semi-finished product inner hook of the watchband section, forming the watchband section through annealing and slow cooling, filling an iron wire into the watchband section by using a mold, then carrying out extrusion forming, and continuously carrying out extrusion forming on the watchband section end-to-end necklace of the watchband so as to connect the watchband sections end-to-end;
the intelligent wearable watchband is completed through dozens of times of extrusion, cold rolling and annealing processes, the change of size and shape and position is controlled in each process, the allowance size of the inner hook of the semi-finished product is accurately calculated, and the extrusion forming process is completed through the process of filling the iron wire with a special die.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. A watchband forming process is characterized by comprising the following steps:
s1, carrying out 12-pass extrusion cold rolling on the martensitic stainless steel wire to manufacture the watchband section of the watchband;
s2, annealing the martensitic stainless steel wire rod between the extrusion cold rolling and the cold rolling, wherein the rolling deformation rate of each extrusion cold rolling is less than or equal to 65 percent compared with that of the previous cold rolling, the annealing temperature is 800-900 ℃, each annealing is cooled to be below 500 ℃ in a slow cooling mode, and the cooling medium is air;
s3, calculating the allowance size of the semi-finished product inner hook of the watchband section, forming the watchband section through annealing and slow cooling, filling and plugging iron wires by using a mold, then carrying out extrusion forming on the watchband section, and carrying out end-to-end necklace on the watchband section of the watchband and continuously carrying out end-to-end connection on the watchband section through extrusion forming.
2. The molding process of a watch band as claimed in claim 1, wherein: the diameter of the wire rod is 12 +/-0.2 mm, and the wire rod is made of 12Cr13 stainless steel.
3. The molding process of a watch band as claimed in claim 2, wherein: in step S2, the temperature generated in the extrusion cold-rolling drawing process is 40-50 ℃ and the rolling reduction of each extrusion cold-rolling is 0.2mm +/-and the annealing temperature is set to 860 ℃.
4. The molding process of a watch band as claimed in claim 3, wherein: the roller used in the extrusion cold rolling treatment is provided with an annular bulge or an annular recess on a curved surface for rolling, the annular bulge and the annular recess are concentrically arranged with the corresponding roller, and the annular bulge and the annular recess are in shape-matching with the section shape of the wire rod after each rolling.
5. The molding process of a watch band as claimed in claim 4, wherein: after step S3, it is necessary to perform surface electrolysis on the watchband formed by joining the plurality of watchband segments supported end to end, wash the watchband after electrolysis, and dry the watchband after washing.
6. The molding process of a watch band as claimed in claim 1, wherein: the heat treatment process of step S2 adopts a laser annealing furnace, the laser pulse frequency is 500Hz, the laser energy density is 300-2The laser annealing time is 10-30ns, and the output power of the laser annealing furnace is 10W.
7. The process for molding a watch band according to claim 5 or 6, wherein: and adopting microwave vibration treatment between the surface electrolysis treatment and the rolling treatment and annealing treatment of the formed watchband, wherein the vibration frequency is 500MHz-9GHz, the microwave vibration treatment time is 20s-150s, and the power of a microwave oscillator is 4000-.
8. The molding process of a watch band as claimed in claim 6, wherein: a plurality of laser heads are arranged in the laser annealing furnace, and the arrangement shape of all the laser heads is matched with the section shape of the part to be annealed.
9. The process for molding a watch band according to claim 7, wherein: adhering a polytetrafluoroethylene plastic film to the surface of the part before surface electrolysis treatment, wherein the plastic film is provided with a plurality of through holes for ensuring the surface corrosion position to be accurate;
the surface electrolysis treatment adopts mixed acid solution corrosion treatment, the treatment time is 1s-15s, and the mixed acid solution is composed of 80% phosphoric acid, 10% water, 5% nitric acid and 5% acetic acid or composed of 50% phosphoric acid, 15% water, 5% hydrofluoric acid and 30% acetic acid;
the surface electrolytic treatment process is as follows: adding phosphoric acid, nitric acid and acetic acid into water at 20-25 deg.C, stirring to dissolve completely, and making into electrolyte; putting the prepared electrolyte and the stainless steel part into an electrolytic bath, electrifying, adjusting electrolytic parameters, carrying out surface electrolytic treatment on the surface of the stainless steel material, taking the stainless steel part out of the electrolytic bath, washing the surface with clear water, washing with absolute ethyl alcohol, and drying with a blower to obtain a processed finished product;
wherein the electrolysis parameters are as follows: the current density is 0.1-2A/cm2The distance between the electrodes is 0.15-0.3m, the temperature of the electrolyte is 20-40 ℃, and the electrolytic reaction rate is 50 mu m/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011400394.1A CN112676500A (en) | 2020-12-02 | 2020-12-02 | Watchband forming process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011400394.1A CN112676500A (en) | 2020-12-02 | 2020-12-02 | Watchband forming process |
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| CN112676500A true CN112676500A (en) | 2021-04-20 |
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| CN202011400394.1A Pending CN112676500A (en) | 2020-12-02 | 2020-12-02 | Watchband forming process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114525383A (en) * | 2022-01-26 | 2022-05-24 | 南华大学 | Laser online annealing equipment and process for cold-rolled sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH635990A5 (en) * | 1979-04-23 | 1983-05-13 | Bambi Inc | Watch strap and method for its manufacture |
| CN1318438A (en) * | 2001-06-05 | 2001-10-24 | 宁波宝新不锈钢有限公司 | Cold rolling process of ferrite and martensitic stainless steel belt |
| CN2518370Y (en) * | 2001-12-29 | 2002-10-30 | 深圳市飞亚达(集团)股份有限公司 | Watch strap |
| CN1416755A (en) * | 2001-11-09 | 2003-05-14 | 柳炳燮 | Production process of watchband parts and fittings |
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| CN206043656U (en) * | 2016-09-19 | 2017-03-29 | 钟范书 | The spray chain extension bar of watchband |
| CN108015203A (en) * | 2017-12-15 | 2018-05-11 | 吴英 | A kind of metal wire rod Simple Machining |
| CN111304415A (en) * | 2020-02-26 | 2020-06-19 | 江阴康瑞成型技术科技有限公司 | Machining process of austenitic stainless steel medical instrument part |
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| CN1416755A (en) * | 2001-11-09 | 2003-05-14 | 柳炳燮 | Production process of watchband parts and fittings |
| CN2518370Y (en) * | 2001-12-29 | 2002-10-30 | 深圳市飞亚达(集团)股份有限公司 | Watch strap |
| CN102553914A (en) * | 2012-01-07 | 2012-07-11 | 无锡嘉联不锈钢有限公司 | Method for producing semi-hard stainless steel strips for making chains |
| CN105537268A (en) * | 2015-12-15 | 2016-05-04 | 安徽伟宏钢结构集团股份有限公司 | Cold rolling process of precise stainless steel band for steel structure building |
| CN206043656U (en) * | 2016-09-19 | 2017-03-29 | 钟范书 | The spray chain extension bar of watchband |
| CN108015203A (en) * | 2017-12-15 | 2018-05-11 | 吴英 | A kind of metal wire rod Simple Machining |
| CN111304415A (en) * | 2020-02-26 | 2020-06-19 | 江阴康瑞成型技术科技有限公司 | Machining process of austenitic stainless steel medical instrument part |
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| CN114525383A (en) * | 2022-01-26 | 2022-05-24 | 南华大学 | Laser online annealing equipment and process for cold-rolled sheet |
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