CN111893800B - Preparation method of stainless steel packing paper beneficial to flattening elongation percentage rolling - Google Patents
Preparation method of stainless steel packing paper beneficial to flattening elongation percentage rolling Download PDFInfo
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- CN111893800B CN111893800B CN202010552730.8A CN202010552730A CN111893800B CN 111893800 B CN111893800 B CN 111893800B CN 202010552730 A CN202010552730 A CN 202010552730A CN 111893800 B CN111893800 B CN 111893800B
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- 238000012856 packing Methods 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 18
- 239000010935 stainless steel Substances 0.000 title claims abstract description 17
- 238000005096 rolling process Methods 0.000 title claims abstract description 16
- 230000009286 beneficial effect Effects 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000010893 paper waste Substances 0.000 claims description 15
- 229920001131 Pulp (paper) Polymers 0.000 claims description 14
- 239000003921 oil Substances 0.000 claims description 13
- 238000004537 pulping Methods 0.000 claims description 10
- 239000012459 cleaning agent Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 239000011122 softwood Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 239000004519 grease Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000010731 rolling oil Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 239000011121 hardwood Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 238000010009 beating Methods 0.000 claims 1
- 238000000137 annealing Methods 0.000 abstract description 5
- 238000005554 pickling Methods 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012075 bio-oil Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
- D21H11/04—Kraft or sulfate pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Paper (AREA)
Abstract
A method for preparing stainless steel packing paper beneficial to flattening elongation percentage rolling comprises the following steps: preparing oil-containing secondary fiber by taking recycled waste packing paper of a steel mill as a raw material; proportioning the slurry: northern bleached sulfate needle pulp: 49-63%, southern bleached sulfate broad leaf pulp: 21-27%, oil-containing secondary fiber: 10-30% by mass; and uniformly mixing the pulp in a pulp mixing pool to prepare the packing paper. The preparation process is simple and easy to operate, the formula of the packing paper is scientific and reasonable, the prepared packing paper has better tissue uniformity, surface strength and tensile strength, the elongation rate of the strip steel during flattening can be improved, the product quality is effectively improved, and the method can be used for producing stainless steel products of an acid pickling cold-annealing unit and a flattening unit.
Description
Technical Field
The invention belongs to the technical field of stainless steel production, relates to stainless steel packing paper, and particularly relates to a preparation method of stainless steel packing paper beneficial to flattening elongation rolling, which is specially used for producing stainless steel products of an acid pickling cold-annealing unit and a flattening unit.
Background
Ferritic stainless steel represents steel grade 430 and is annealed after rolling in a mill train, the annealing resulting in a yield plateau. The yield plateau has a great influence on the quality of the product for deep drawing, causing rough slip lines or cracks on the surface of the product. It is therefore necessary to produce a certain elongation through the levelling unit to eliminate the yield plateau. At present, stainless steel leveling has two modes of dry leveling and wet leveling, and the dry leveling is a mode commonly used by stainless steel factories. Compared with wet leveling, the dry leveling has the effect of leveling liquid, the elongation rate is not easy to roll out, the purpose of eliminating a yield platform can be achieved only by leveling for many times, the production cost is increased, and the quality risk is also increased. Therefore, it is necessary to prepare a stainless steel packing paper which is beneficial to flattening the rolled-out elongation.
At present, domestic stainless steel packing paper has few patents, only a few of which have related patents on high temperature resistance and hydrophilicity, and the packing paper which is beneficial to flattening the elongation rate is not reported. Because the leveling unit has the characteristics of high running speed, large uncoiling and coiling tension and more times of repeated use of the packing paper, the packing paper is required to have better physical properties such as tissue uniformity, surface strength, tensile strength and the like so as to prevent the defects of press-in of the surface of a steel plate caused by hair and powder falling of the paper in the leveling process. Meanwhile, the padding paper is required to have trace grease substances uniformly transferred to the surface of the strip steel under the action of tension in the contact process of the padding paper and the strip steel, and the padding paper is beneficial to obtaining a controllable lubricating effect similar to a leveling liquid on the surface of the strip steel in the leveling process, so that the elongation rate of the strip steel in the leveling process is improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of stainless steel packing paper beneficial to flattening elongation rate rolling, wherein the prepared packing paper has better tissue uniformity, surface strength and tensile strength, and can improve the elongation rate of strip steel in flattening.
The technical scheme adopted by the invention for solving the technical problems is as follows: a preparation method of stainless steel packing paper beneficial to flattening elongation percentage rolling is characterized by comprising the following steps:
1) preparing oil-containing secondary fibers by taking recycled waste packing paper of a steel mill as a raw material;
2) proportioning the slurry: northern bleached sulfate needle pulp: 49-63%, southern bleached sulfate broad leaf pulp: 21-27%, oil-containing secondary fiber: 10-30% by mass;
3) and uniformly mixing the pulp in a pulp mixing pool to prepare the packing paper.
The technological parameters are as follows: pulping concentration: 5.0-6.0%, pulping temperature: at 70-80 ℃, pulping time: 30-50 min, defibering concentration of waste paper pulp: 3.8-4.2%, the degree of kowtowing: SR at 55-65 degrees, wet weight: 3.5-4.5 g.
Preferably, the recycled waste packing paper in the step 1) is waste packing paper with uniform grease adsorption and consistent color.
As an improvement, the preparation of the oil-containing secondary fiber in the step 1) is to adopt a biological cleaning agent to dissociate the fibers of the recycled waste packing paper and remove the redundant rolling oil, and the addition amount of the biological cleaning agent is as follows: 0.5 to 1.0 percent.
Further, the preparation process of the oil-containing secondary fiber pulp of the step 1) comprises the following steps: recycled waste packing paper → medium consistency hydropulper → waste paper pulp tank → defibrator → twin-wire press → waste paper pulp tank → pressure screen → disc thickener → waste paper pulp tank → high frequency defibrator → broken paper knocking post tower → pulp blending tank.
Further, the preparation process of the northern bleached sulfate needle-leaved pulp in the step 2) comprises the following steps: softwood pulp board → hydropulper → anterior softwood pulp tank before tapping → high concentration slag separator → disc mill → middle pulp tank → disc mill → rear pulp tower after tapping → pulp mixing tank.
Further, the preparation process of the south bleached sulfate broad leaf pulp in the step 2) comprises the following steps: hardwood pulp board → hydropulper → anterior contour leaf pulp tank before knocking → high concentration slag separator → middle pulp tank → disc mill → pulp tower after knocking → pulp distribution tank.
Further, the concrete process of preparing the packing paper after the slurry obtained in the step 3) is uniformly mixed in the slurry preparing pool comprises the following steps: the pulp distribution tank → the homogenizing mill → the pulp making tank → the pulp flushing pump → the scummer → the pulp feeding pump → the pressure screen → the pulp box → the net part → the press part → the front drying part → the surface sizing part → the rear drying part → the press rolling part → the re-rolling part → the baling and warehousing.
Preferably, the slurry mixture ratio of the step 2) is as follows: northern bleached sulfate needle pulp: 56%, southern bleached sulfate broad leaf pulp: 24%, oil-containing secondary fiber: 20 percent, and the percentage is mass percent.
Preferably, the process parameters are as follows: the crushed pulp concentration: 5.0%, pulping temperature: 80 ℃, pulping time: 40min, defibering concentration of waste paper pulp: 4.0%, click rate: 65 ° SR, wet weight: 3.7 g.
Compared with the prior art, the invention has the advantages that: the slurry proportion is scientific and reasonable, the northern bleached sulfate needle-leaf pulp is selected, the southern bleached sulfate broad-leaf pulp with a certain proportion is matched, and then the oil-containing secondary fiber is matched, so that the requirement that the padding paper can provide a lubricating effect for the surface of the strip steel under the action of tension when the strip steel is padded in the acid-washing cold-annealing unit can be met; the oil-containing secondary fiber is selected from recycled waste packing paper, so that the cost is effectively reduced. The preparation process is simple and easy to operate, the formula of the packing paper is scientific and reasonable, the prepared packing paper has better tissue uniformity, surface strength and tensile strength, the elongation rate of the strip steel during flattening can be improved, the product quality is effectively improved, and the method can be used for producing stainless steel products of pickling cold-annealing units and flattening units.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following examples of the drawings.
A method for preparing stainless steel packing paper beneficial to flattening elongation percentage rolling comprises the following steps:
1) the method comprises the following steps of (1) preparing the oil-containing secondary fiber by using recycled waste packing paper of a steel mill as a raw material: retrieve waste packing paper and select even, the unanimous waste packing paper side of color and luster of grease absorption to use, the preparation of oiliness secondary fiber adopts biological cleaner to dissociate the fibre of retrieving waste packing paper and get rid of unnecessary rolling oil, biological cleaner addition: 0.5 to 1.0 percent. The biological cleaning agent may be any commercially available cleaning agent for cleaning greasy dirt, such as Bio-oil clean E01 biological environment-friendly greasy dirt cleaning agent, to name a few.
The preparation process comprises the following steps: recycled waste packing paper → medium-consistency hydrapulper → waste paper pulp tank → defibrator → twin-wire pulp press → waste paper pulp tank → pressure screen → disc thickener → waste paper pulp tank → high-frequency fluffer → fluffer disk grinder → waste paper back tower → pulp mixing tank.
2) The slurry formulations are as follows:
the percentage is mass percentage;
wherein the preparation process of the northern bleached sulfate needle-leaved pulp comprises the following steps: softwood pulp board → hydropulper → anterior softwood pulp tank before tapping → high-concentration slag separator → disc mill → middle pulp tank → disc mill → posterior pulp tower after tapping → pulp blending tank;
the preparation process of the southern bleached sulfate broad-leaved pulp comprises the following steps: broad leaf wood pulp board → hydrapulper → anterior contour leaf pulp tank before knocking → high concentration slag separator → middle pulp tank → disc mill → pulp tower after knocking → pulp mixing tank;
3) uniformly mixing the slurry in a slurry preparation tank to prepare packing paper:
the specific process comprises the following steps: the pulp distribution tank → the homogenizing mill → the pulp making tank → the pulp flushing pump → the scummer → the pulp feeding pump → the pressure screen → the pulp box → the net part → the press part → the front drying part → the surface sizing part → the rear drying part → the press rolling part → the re-rolling part → the baling and warehousing.
The process parameters are as follows:
and (5) producing each process parameter by taking the figure of merit as a reference value.
After the packing paper is produced, the packing paper and common packing paper are packed into the same roll of 430 steel band steel in an acid pickling and cooling unit, and the elongation of a leveling unit in production is as follows:
as can be seen from the above table: the elongation of the strip steel of the paper padding part is larger than that of the common paper padding.
The invention is illustrated in more detail below by means of a number of examples and comparative examples:
table 1 shows the composition of the packing paper prepared in examples and comparative examples, table 2 shows the manufacturing process parameters of the packing paper prepared in examples and comparative examples, table 3 shows the properties of the packing paper prepared in examples and comparative examples, and table 4 shows the flat elongation of the packing paper prepared in examples and comparative examples after the packing in of the acid pickling cold-rolling mill.
TABLE 1
TABLE 2
TABLE 3
TABLE 4
As can be seen from the rolling force parameters in Table 4, the elongation of the strip steel of the packing paper prepared by the invention is larger than that of the packing paper prepared by the comparison, which shows that the packing paper prepared by the invention is easier to flatten the elongation.
Claims (7)
1. A preparation method of stainless steel packing paper beneficial to flattening elongation percentage rolling is characterized by comprising the following steps:
1) preparing oil-containing secondary fiber by taking recycled waste packing paper of a steel mill as a raw material;
the preparation of the oil-containing secondary fiber in the step 1) is to adopt a biological cleaning agent to dissociate the fiber of the recycled waste packing paper and remove redundant rolling oil, wherein the addition amount of the biological cleaning agent is as follows: 0.5-1.0%;
the preparation process of the oil-containing secondary fiber pulp in the step 1) comprises the following steps: recycled waste packing paper → medium-consistency hydropulper → waste paper pulp tank → defibrator → twin-wire press → waste paper pulp tank → pressure sieve → disc thickener → waste paper pulp tank → high-frequency fluffer → fluffer disc mill → waste paper beating tower → pulp blending tank;
2) proportioning the slurry: northern bleached sulfate needle pulp: 49-63%, southern bleached sulfate broad-leaf pulp: 21-27%, oil-containing secondary fiber: 10-30% by mass;
3) uniformly mixing the pulp in a pulp mixing pool to prepare packing paper;
the technological parameters are as follows: pulping concentration: 5.0-6.0%, pulping temperature: 70-80 ℃, pulping time: 30-50 min, defibering concentration of waste paper pulp: 3.8-4.2%, the degree of kowtowing: SR at 55-65 degrees, wet weight: 3.5-4.5 g.
2. The method of claim 1, wherein: the recycled waste packing paper in the step 1) is waste packing paper with uniform grease adsorption and consistent color.
3. The production method according to claim 1, characterized in that: the preparation process of the northern bleached sulfate coniferous pulp in the step 2) comprises the following steps: softwood pulp board → hydropulper → anterior softwood pulp tank before tapping → high consistency scummer → refiner → middle pulp tank → refiner → posterior pulp tower after tapping → blending tank.
4. The method of claim 1, wherein: the preparation process of the southern bleached sulfate broad-leaved pulp in the step 2) comprises the following steps: hardwood pulp board → hydropulper → anterior contour leaf pulp tank before knocking → high concentration slag separator → middle pulp tank → disc mill → pulp tower after knocking → pulp distribution tank.
5. The production method according to claim 1, characterized in that: the concrete process for preparing the packing paper after the slurry obtained in the step 3) is uniformly mixed in the slurry preparation pool comprises the following steps: the pulp distribution tank → the homogenizing mill → the pulp making tank → the pulp flushing pump → the scummer → the pulp feeding pump → the pressure screen → the pulp box → the net part → the press part → the front drying part → the surface sizing part → the rear drying part → the press rolling part → the re-rolling part → the baling and warehousing.
6. The method of claim 1, wherein: the slurry mixture ratio of the step 2) is as follows: northern bleached sulfate needle pulp: 56%, southern bleached sulfate broad leaf pulp: 24%, oil-containing secondary fiber: 20 percent, and the percentage is mass percent.
7. The method of claim 1, wherein: the process parameters are as follows: the crushed pulp concentration: 5.0%, pulping temperature: 80 ℃, pulping time: 40min, defibering concentration of waste paper pulp: 4.0%, click rate: 65 ° SR, wet weight: 3.7 g.
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| CN113512895A (en) * | 2021-05-28 | 2021-10-19 | 江辉辉 | Device for recycling waste paper in paper production and manufacturing process |
| CN116657444B (en) * | 2023-05-31 | 2024-08-06 | 沈阳思特雷斯纸业有限责任公司 | Precise metal plate strip inter-turn paper and preparation method thereof |
| CN116575266B (en) * | 2023-06-05 | 2024-10-22 | 岳阳林纸股份有限公司 | Manufacturing method of military ground drawing |
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