CN112475783A - Novel stainless iron screw cap and manufacturing process thereof - Google Patents
Novel stainless iron screw cap and manufacturing process thereof Download PDFInfo
- Publication number
- CN112475783A CN112475783A CN202011115512.4A CN202011115512A CN112475783A CN 112475783 A CN112475783 A CN 112475783A CN 202011115512 A CN202011115512 A CN 202011115512A CN 112475783 A CN112475783 A CN 112475783A
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- Prior art keywords
- stainless iron
- screw cap
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- iron
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- C21D1/26—Methods of annealing
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
-
- 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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Closures For Containers (AREA)
Abstract
The invention provides a novel stainless iron screw cap and a manufacturing process thereof, which mainly comprises the following steps: selecting materials, cold rolling, degreasing and cleaning, annealing, secondary cold rolling, secondary degreasing and cleaning, secondary annealing, flattening plate shapes, pickling, drying, cutting and die-pressing forming. Compared with the traditional tinplate, the stainless iron screw cap provided by the invention has unique advantages in acid resistance and alkali resistance, and is more suitable for packaging, sealing and storing under severe conditions such as humidity, acid, alkali and the like. Meanwhile, the stainless iron screw cap has better strength and environmental protection performance, and the applicability range is wider.
Description
Technical Field
The invention relates to the field of screw caps, in particular to a novel stainless iron screw cap and a manufacturing process thereof.
Background
Tinplate, also known as tinplate, is a cold-rolled carpet steel sheet or strip with both sides plated with commercial pure tin, and is widely used in packaging of foods, beverages, grease, chemical industry, coatings, paints, sprays, bottle caps and other daily necessities mainly because of its advantages of corrosion resistance, good ductility, high strength, good formability and the like.
At present, most screw caps on the market are also made of tinplate, however, in the process of storing and sealing some special products such as a series of products of weak acid and weak base, certain passivation reaction can occur on the surface of the tinplate in the long-time contact process of the tinplate with the weak acid and the weak base, and finally the effect of the tinplate on the aspects of storage and sealing is influenced, so that the product quality is influenced. Therefore, it is necessary to design a new type of screw cap to deal with a special product.
Disclosure of Invention
The novel stainless iron screw cap is prepared by selecting stainless iron as the novel screw cap and performing a series of steps of cold rolling, degreasing, annealing, leveling, acid washing, cutting, die-pressing and the like.
In order to solve the technical problems, the invention provides the following technical scheme:
a novel stainless iron screw cap and a manufacturing process thereof comprise the following steps:
s1, selecting materials: selecting a proper pattern of stainless iron;
s2, cold rolling: rolling the selected stainless iron at normal temperature to thin;
s3, degreasing and cleaning: dipping the cold-rolled stainless iron in an alkali liquor in order to remove oil stains on the surface;
s4, annealing: annealing the stainless iron cleaned in the previous step, slowly heating the stainless iron to a certain temperature, keeping the temperature for a period of time, and naturally cooling the stainless iron;
s5, secondary cold rolling: rolling the cooled stainless iron again at normal temperature;
s6, secondary degreasing and cleaning: immersing the stainless iron subjected to the secondary cold rolling in alkali liquor again for surface decontamination;
s7, secondary annealing: annealing the cleaned stainless iron again, slowly heating to a certain temperature, keeping for a period of time, and naturally cooling;
s8, flat plate type: carrying out flat plate type on the cooled stainless iron to cover the defects on the surface of the stainless iron;
s9, acid washing: washing the surface of the stainless iron by using clean water, then placing the stainless iron in a pickling solution in a pickling line for pickling to remove surface oxide skin, an oxide film and residual alkali solution, and finally cleaning the stainless iron by using the clean water to remove the residual acid solution on the surface.
S10, drying: placing the stainless iron in a drying chamber for drying;
s11, cutting: cutting the dried stainless iron into stainless iron sheets;
s12, compression molding: and placing the stainless iron sheet under a bottle cap die-pressing device for die-pressing molding, injection-molding a rubber mat coating on the inner side of the stainless screw cap, and heating to form a sealing rubber gasket, thereby finally obtaining the stainless iron screw cap.
Preferably, in step S1, the stainless iron is 410 or 430, and the stainless iron has a thickness of 1-3.5 mm.
Preferably, in steps S3 and S6, the degreasing and cleaning are performed by using an alkali solution to clean the surface of the stainless iron, wherein the alkali solution is Na2CO3Solution, NaHCO3One or more of solution and NaOH solution, wherein the pH value of the alkali liquor is 8-10, and the degreasing time is 10-20 min.
Preferably, in steps S4 and S7, the degreased stainless iron is annealed at the annealing temperature of 700-1000 ℃ for 5-10 min.
Preferably, in step S2, the stainless iron after cold rolling has a thickness of 0.5-1.5 mm; and step S5, the thickness of the stainless iron after the secondary cold rolling is 0.15-0.4 mm.
Preferably, in step S8, the thickness of the flattened stainless iron is 0.1-0.3 mm.
Preferably, in step S9, the pickling solution is a hydrochloric acid solution, the concentration of the hydrochloric acid solution is 5-10%, and the pickling time is 2-5 min.
Preferably, the drying temperature is 100-150 ℃, and the drying time is 30-40 min.
Still further preferably, the sealing rubber pad coating injected on the inner side of the stainless screw cap is a polyvinyl chloride sealing rubber gasket, the heating forming temperature is 200-220 ℃, and the forming time is 2-5 min.
Advantageous effects
Compared with the traditional tinplate, the stainless iron screw cap provided by the invention has unique advantages in acid resistance and alkali resistance, and is more suitable for packaging, sealing and storing under severe conditions such as humidity, acid, alkali and the like. Meanwhile, the stainless iron screw cap has better strength and environmental protection performance, and the applicability range is wider.
Detailed Description
The following description is given in conjunction with the preferred embodiments, which are given for illustration purposes only and do not limit the present invention.
Example 1
The novel stainless iron screw cap is manufactured by the following steps:
s1, selecting materials: the stainless iron is 410 type stainless iron, and the specification of the stainless iron is 3.5mm in thickness.
S2, cold rolling: rolling the type 410 stainless iron at normal temperature, wherein the thickness of the rolled stainless iron is 1.5 mm;
s3, degreasing and cleaning: immersing the stainless iron after cold rolling in NaHCO3And Na2CO3The mixed alkaline solution of (2), wherein the pH value of the mixed alkaline solution is 8, in order to remove residual oil stains on the surface of the stainless iron;
s4, annealing: carrying out high-temperature annealing treatment on the stainless iron cleaned in the previous step, wherein the annealing temperature is 800 ℃, the annealing time is 10min, and finally carrying out natural cooling;
s5, secondary cold rolling: rolling the cooled stainless iron again at normal temperature, wherein the thickness of the stainless iron after secondary rolling is 0.4 mm;
s6, secondary degreasing and cleaning: immersing the stainless iron subjected to the secondary cold rolling in alkali liquor again for surface decontamination;
s7, secondary annealing: annealing the cleaned stainless iron again;
s8, flat plate type: and (3) carrying out flat plate type on the cooled stainless iron to cover the defects on the surface of the stainless iron, wherein the thickness of the flat stainless iron is 0.2mm.
S9, acid washing: washing the surface of the stainless iron by using clean water, then placing the stainless iron in a 5% hydrochloric acid solution in a pickling line for pickling, wherein the pickling time is 5min, and mainly removing surface oxide skin, an oxide film and a residual alkali solution, and finally cleaning the stainless iron by using the clean water to remove the residual acid solution on the surface.
S10, drying: and (3) drying the stainless iron in a drying chamber at the drying temperature of 120 ℃ for 30 min.
S11, cutting: cutting the dried stainless iron into stainless iron sheets;
s12, compression molding: and (3) placing the stainless iron sheet under a bottle cap die-pressing device for die-pressing molding, and injecting a polyvinyl chloride sealing rubber gasket on the inner side of the stainless screw cap, wherein the heating molding temperature is 200 ℃, and the molding time is 5min, so that the novel stainless iron screw cap is finally obtained.
Example 2
The novel stainless iron screw cap is manufactured by the following steps:
s1, selecting materials: 430 model stainless iron is selected, and the specification of the stainless iron is 3.5mm in thickness.
S2, cold rolling: rolling 430 model stainless iron at normal temperature to obtain thin stainless iron with thickness of 1.5 mm.
S3, degreasing and cleaning: immersing the stainless iron after cold rolling in NaHCO3And Na2CO3The mixed alkali liquor of (2), wherein the pH value of the mixed alkali liquor is 8, and residual oil stains on the surface of the stainless iron are removed.
S4, annealing: and (3) carrying out high-temperature annealing treatment on the stainless iron cleaned in the previous step, wherein the annealing temperature is 1000 ℃, the annealing time is 10min, and finally carrying out natural cooling.
S5, secondary cold rolling: and (4) rolling the cooled stainless iron again at normal temperature, wherein the thickness of the stainless iron after secondary rolling is 0.4 mm.
S6, secondary degreasing and cleaning: and soaking the stainless iron subjected to the secondary cold rolling in alkali liquor again for surface decontamination.
S7, secondary annealing: and repeating the annealing treatment on the cleaned stainless iron again.
S8, flat plate type: and (3) carrying out flat plate type on the cooled stainless iron to cover the defects on the surface of the stainless iron, wherein the thickness of the flat stainless iron is 0.2mm.
S9, acid washing: washing the surface of the stainless iron by using clean water, then placing the stainless iron in a 5% hydrochloric acid solution in a pickling line for pickling, wherein the pickling time is 5min, and mainly removing surface oxide skin, an oxide film and a residual alkali solution, and finally cleaning the stainless iron by using the clean water to remove the residual acid solution on the surface.
S10, drying: and (3) drying the stainless iron in a drying chamber at the drying temperature of 120 ℃ for 30 min.
S11, cutting: cutting the dried stainless iron into stainless iron sheets.
S12, compression molding: and (3) placing the stainless iron sheet under a bottle cap die-pressing device for die-pressing molding, and injecting a polyvinyl chloride sealing rubber gasket on the inner side of the stainless screw cap, wherein the heating molding temperature is 200 ℃, the molding time is 5min, and finally the novel stainless iron screw cap 2 is obtained.
Although the present invention has been described in detail with reference to the foregoing examples, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. The novel stainless iron screw cap and the manufacturing process are characterized by comprising the following steps of:
s1, selecting materials: selecting a proper pattern of stainless iron;
s2, cold rolling: rolling the selected stainless iron at normal temperature to thin;
s3, degreasing and cleaning: dipping the cold-rolled stainless iron in an alkali liquor in order to remove oil stains on the surface;
s4, annealing: annealing the stainless iron cleaned in the previous step, slowly heating the stainless iron to a certain temperature, keeping the temperature for a period of time, and naturally cooling the stainless iron;
s5, secondary cold rolling: rolling the cooled stainless iron again at normal temperature;
s6, secondary degreasing and cleaning: immersing the stainless iron subjected to the secondary cold rolling in alkali liquor again for surface decontamination;
s7, secondary annealing: annealing the cleaned stainless iron again, slowly heating to a certain temperature, keeping for a period of time, and naturally cooling;
s8, flat plate type: carrying out flat plate type on the cooled stainless iron to cover the defects on the surface of the stainless iron;
s9, acid washing: washing the surface of the stainless iron by using clean water, then placing the stainless iron in a pickling solution in a pickling line for pickling to remove surface oxide skin, an oxide film and residual alkali solution, and finally cleaning the stainless iron by using the clean water to remove the residual acid solution on the surface.
S10, drying: placing the stainless iron in a drying chamber for drying;
s11, cutting: cutting the dried stainless iron into stainless iron sheets;
s12, compression molding: and placing the stainless iron sheet under a bottle cap die-pressing device for die-pressing molding, injection-molding a rubber mat coating on the inner side of the stainless screw cap, and heating to form a sealing rubber gasket, thereby finally obtaining the stainless iron screw cap.
2. The novel stainless iron screw cap and the manufacturing process thereof according to claim 1, wherein in step S1, the stainless iron is 410 or 430, and the specification of the stainless iron is 1-3.5mm in thickness.
3. The new type of rustless iron screw cap and the manufacturing process thereof as claimed in claim 1, wherein the degreasing and cleaning step in steps S3 and S6 is performed by cleaning the surface of the stainless iron with an alkali solution, wherein the alkali solution is Na2CO3Solution, NaHCO3One or more of solution and NaOH solution, wherein the pH value of the alkali liquor is 8-10, and the degreasing time is 10-20 min.
4. The process of claim 1, wherein the degreasing stainless steel is annealed at 700-1000 ℃ for 5-10min in steps S4 and S7.
5. The novel stainless iron screw cap and the manufacturing process thereof according to claim 1, wherein in step S2, the thickness of the stainless iron after cold rolling is 0.5-1.5 mm; and step S5, the thickness of the stainless iron after the secondary cold rolling is 0.15-0.4 mm.
6. The novel stainless iron screw cap and the manufacturing process thereof according to claim 1, wherein the thickness of the flattened stainless iron in step S8 is 0.1-0.3 mm.
7. The novel stainless iron screw cap and the manufacturing process thereof according to claim 1, wherein in step S9, the pickling solution is hydrochloric acid solution, the concentration of the hydrochloric acid solution is 5-10%, and the pickling time is 2-5 min.
8. The process of claim 1, wherein in step S10, the drying temperature is 100-150 ℃ and the drying time is 30-40 min.
9. The process for manufacturing the stainless steel screw cap as claimed in claim 1, wherein in step S12, the sealing rubber pad layer injected on the inner side of the stainless steel screw cap is a polyvinyl chloride sealing rubber pad, the heating and forming temperature is 200-220 ℃, and the forming time is 2-5 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011115512.4A CN112475783A (en) | 2020-10-19 | 2020-10-19 | Novel stainless iron screw cap and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011115512.4A CN112475783A (en) | 2020-10-19 | 2020-10-19 | Novel stainless iron screw cap and manufacturing process thereof |
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| Publication Number | Publication Date |
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| CN112475783A true CN112475783A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011115512.4A Pending CN112475783A (en) | 2020-10-19 | 2020-10-19 | Novel stainless iron screw cap and manufacturing process thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4885215A (en) * | 1986-10-01 | 1989-12-05 | Kawasaki Steel Corp. | Zn-coated stainless steel welded pipe |
| WO2007146161A1 (en) * | 2006-06-09 | 2007-12-21 | University Of Cincinnati | High-aluminum alloy for general galvanizing |
| CN103173697A (en) * | 2013-03-25 | 2013-06-26 | 宜兴北海封头有限公司 | Biphase alloy steel tank container seal head and preparation technology thereof |
| CN203109068U (en) * | 2013-03-27 | 2013-08-07 | 长春工业大学 | Punch die used for neck pulling processing of stainless steel tank end socket |
| CN103459055A (en) * | 2011-03-31 | 2013-12-18 | 日新制钢株式会社 | Stainless steel sheet and method for manufacturing same |
| CN106826127A (en) * | 2017-02-22 | 2017-06-13 | 青岛北琪实业有限公司 | A kind of tin is uncapped moulding process |
| CN106854688A (en) * | 2017-03-13 | 2017-06-16 | 北京科技大学 | A kind of Technology for Heating Processing of the cold rolling 410 stainless steel band mechanical property of control |
| CN108405608A (en) * | 2018-02-08 | 2018-08-17 | 中冶南方工程技术有限公司 | A kind of stainless-steel cold-rolling production unit and its production method |
| CN109530433A (en) * | 2018-12-11 | 2019-03-29 | 佛山市诚德新材料有限公司 | A kind of Cold Rolling System of stainless steel band |
-
2020
- 2020-10-19 CN CN202011115512.4A patent/CN112475783A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4885215A (en) * | 1986-10-01 | 1989-12-05 | Kawasaki Steel Corp. | Zn-coated stainless steel welded pipe |
| WO2007146161A1 (en) * | 2006-06-09 | 2007-12-21 | University Of Cincinnati | High-aluminum alloy for general galvanizing |
| CN103459055A (en) * | 2011-03-31 | 2013-12-18 | 日新制钢株式会社 | Stainless steel sheet and method for manufacturing same |
| CN103173697A (en) * | 2013-03-25 | 2013-06-26 | 宜兴北海封头有限公司 | Biphase alloy steel tank container seal head and preparation technology thereof |
| CN203109068U (en) * | 2013-03-27 | 2013-08-07 | 长春工业大学 | Punch die used for neck pulling processing of stainless steel tank end socket |
| CN106826127A (en) * | 2017-02-22 | 2017-06-13 | 青岛北琪实业有限公司 | A kind of tin is uncapped moulding process |
| CN106854688A (en) * | 2017-03-13 | 2017-06-16 | 北京科技大学 | A kind of Technology for Heating Processing of the cold rolling 410 stainless steel band mechanical property of control |
| CN108405608A (en) * | 2018-02-08 | 2018-08-17 | 中冶南方工程技术有限公司 | A kind of stainless-steel cold-rolling production unit and its production method |
| CN109530433A (en) * | 2018-12-11 | 2019-03-29 | 佛山市诚德新材料有限公司 | A kind of Cold Rolling System of stainless steel band |
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Application publication date: 20210312 |