CN111961519A - Wire drawing powder for drawing steel wire of steel strand and preparation method thereof - Google Patents

Wire drawing powder for drawing steel wire of steel strand and preparation method thereof Download PDF

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Publication number
CN111961519A
CN111961519A CN202010712267.9A CN202010712267A CN111961519A CN 111961519 A CN111961519 A CN 111961519A CN 202010712267 A CN202010712267 A CN 202010712267A CN 111961519 A CN111961519 A CN 111961519A
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China
Prior art keywords
wire
powder
drawing powder
filtering
crushed
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CN202010712267.9A
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Inventor
姚华强
刘安荣
王振杰
彭伟
安明清
陈通
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Guizhou Shuigang Tongxinsheng Metal Products Co ltd
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Guizhou Shuigang Tongxinsheng Metal Products Co ltd
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Priority to CN202010712267.9A priority Critical patent/CN111961519A/en
Publication of CN111961519A publication Critical patent/CN111961519A/en
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04Mixtures of base-materials and additives
    • C10M169/045Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C9/00Cooling, heating or lubricating drawing material
    • B21C9/02Selection of compositions therefor
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/10Compounds containing silicon
    • C10M2201/105Silica
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10Carboxylix acids; Neutral salts thereof
    • C10M2207/12Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/126Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic

Abstract

The invention relates to the technical field of lubricants for drawing steel wires, in particular to wire drawing powder for drawing steel stranded wires and a preparation method thereof.

Description

Wire drawing powder for drawing steel wire of steel strand and preparation method thereof
Technical Field
The invention relates to the technical field of lubricants for steel wire drawing, in particular to wire drawing powder for steel strand wire drawing and a preparation method thereof.
Background
The wire drawing is one of metal processing technologies, and under the action of external force, metal passes through a die, the sectional area of the metal is compressed, and the metal wire processing method meeting the requirements of size and shape is obtained. The wire drawing treatment can make the metal surface obtain stronger metal texture, has very strong decorative effect, and the metal wire after the wire drawing forming has the advantages of better rust prevention, wear resistance, beautiful appearance and the like, is durable and is convenient to maintain.
The metal drawing process needs to use a lubricating material so as to reduce the friction damage to the drawn metal and the die, prolong the service life of the die and ensure the wire drawing quality of the product. At present, liquid lubricating oil is mostly adopted as a wire drawing medium in a wire drawing process, and the drawn wire has the characteristics of round, red, greasy, smooth, bright and low wire breakage rate; however, the lubricating oil consumption is large, the cleaning is time-consuming and labor-consuming, the heat dissipation is slow, the mold is easy to damage, the product quality is influenced, and the high temperature is easy to ignite or evaporate the oil to smoke, so that the production environment is deteriorated. Therefore, solid powder lubricating materials, also called wire drawing powder, appear in the market, the main components of which are lime, animal oil, paraffin, soap, talcum powder, alkali and the like, but in practical application, the wire drawing powder components can damage the surface structure of the materials and reduce the strength and toughness of the surfaces of the materials, the lime contains a large amount of impurities, screening is needed in the subsequent processing process, and the paraffin contains polycyclic aromatic hydrocarbons and polycyclic aromatic hydrocarbons, which are easy to cause damage to human bodies.
In view of this, researchers in the prior art have conducted a great deal of research on the above technical problems, such as: patent application No. 20171131234.8 discloses metal wire drawing powder, adopts sodium carbonate, silica fume, diatom mud, calcium stearate, sodium citrate, talcum powder, cellulose ether, sodium benzoate, lignocellulose, water to prepare and form to improve the wire drawing powder lubricity, can form even compact lubricating film on metal surface, reduce the friction damage of drawing metal and mould.
For another example: the lubricant for drawing the spring steel wire with the patent number of 201410088362.0 adopts 40-60 percent of calcium stearate, 35-55 percent of softening point regulator and 5-8 percent of extreme pressure additive; the softening point regulator is at least one of calcium hydroxide, titanium dioxide, zinc oxide, sodium carbonate, sodium silicate, borax and paraffin; the extreme pressure additive is zinc dialkyl dithiophosphate, and through drawing tests on 55CrSi and 60Si2MnA wire rods, test results show that the requirements of direct multi-pass drawing can be met, the surface smoothness of the produced steel wire is improved, and scratches are not generated.
In conclusion, in the prior art, the comprehensive performance of the wire drawing powder is not deeply researched, so that the thickness of a lubricating film is formed on the surface of a metal wire when the metal wire is drawn, and the lubricating performance effect is not ideal; and found in practical production application: the corresponding wire drawing powder is applied to the drawing of the steel strand steel wire, the adhesion capability of the wire drawing powder to the surface of a metal wire is weak, the loss is high, the high temperature resistance is poor, the drawing lubrication performance is affected, and the comprehensive performance of the steel wire obtained by drawing is poor.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides wire drawing powder for drawing steel wires of steel strands and a preparation method thereof.
The method is realized by the following technical scheme:
the invention aims to provide wire drawing powder for drawing steel wires of steel strands, which comprises the following raw materials, by weight, 45-50 parts of calcium stearate, 3-7 parts of diatom ooze and 10-15 parts of modified auxiliary materials; the modified auxiliary material is prepared by mixing waste edible fungus sticks with water, performing ultrasonic extraction and filtration, taking filtrate, concentrating, adding an alcohol solution in an equal volume, standing for precipitation, performing centrifugal separation, filtering and drying.
Preferably, the raw material components comprise 48 parts by weight of calcium stearate, 5 parts by weight of diatom ooze and 13 parts by weight of modified auxiliary materials.
Preferably, the modified auxiliary materials: crushing waste edible fungus sticks, and sieving the crushed edible fungus sticks with a 100-mesh sieve to obtain crushed substances; adding 3 times of water by mass into the crushed materials, mixing, carrying out ultrasonic treatment at 20kHz for 3min, filtering, taking filtrate, and concentrating to one third of the original volume to obtain concentrated solution; ③ adding an alcohol solution into the concentrated solution with the same volume, standing for precipitation, performing centrifugal separation at 4000r/min, filtering, taking filter residue, and drying at the constant temperature of 50 ℃ to obtain the compound.
Preferably, the alcohol solution is 75% ethanol solution by mass concentration.
Preferably, the diatom ooze has a porosity of 98% and a specific surface area of 70m2/g。
The invention also provides a preparation method of the wire drawing powder for drawing the steel strand steel wire, which comprises the steps of sequentially adding calcium stearate, diatom ooze and modified auxiliary materials into a kneading machine, stirring and heating to 160 ℃, treating for 40min, crushing and sieving to obtain powdery wire drawing powder.
And the sieving is carried out for two times, wherein the first sieving is carried out by a sieve of 90 meshes, the bottom material of the sieve is taken, the second sieving is carried out by a sieve of 500 meshes, and the surface material of the sieve is the wire drawing powder.
The third purpose of the invention is to provide a modified auxiliary material for wire-drawing powder, which is extracted from waste edible fungus sticks. The used edible fungus waste stick is selected from at least one of oil tea mushroom waste stick, needle mushroom waste stick, morel mushroom waste stick and antler mushroom waste stick.
Compared with the prior art, the invention has the technical effects that:
the wire drawing powder is prepared from the calcium stearate, the diatom ooze and the modified auxiliary materials, and the modified auxiliary materials are extracted from the waste edible fungus sticks, so that the preparation cost of the wire drawing powder is reduced, the resource comprehensive utilization of the waste edible fungus sticks is improved, the obtained wire drawing powder can meet the requirement of continuous drawing for more than 4 times, the surface smoothness of a steel wire is high, the scratch phenomenon does not occur, and the high-temperature resistance is excellent.
Detailed Description
The technical solution of the present invention is further defined below with reference to the specific embodiments, but the scope of the claims is not limited to the description.
In the following examples, the waste edible fungus sticks are all provided by Guizhou Guifujun Co., Ltd, and the ethanol solution, the calcium stearate and the diatom ooze are all purchased in the market.
Example 1
Preparing modified auxiliary materials: crushing waste edible mushroom (velvet antler mushroom) sticks, and sieving the crushed edible mushroom sticks with a 100-mesh sieve to obtain crushed materials; adding 3 times of water by mass into the crushed materials, mixing, carrying out ultrasonic treatment at 20kHz for 3min, filtering, taking filtrate, and concentrating to one third of the original volume to obtain concentrated solution; ③ adding an alcoholic solution (75 percent ethanol solution) into the concentrated solution with the same volume, standing for precipitation, performing centrifugal separation at 4000r/min, filtering, taking filter residue, and drying at the constant temperature of 50 ℃ to obtain the compound.
Preparing wire drawing powder: 4.5kg of calcium stearate and diatom ooze (with the porosity of 98 percent and the specific surface area of 70 m)2And/g) 0.3kg of modified auxiliary material and 1.0kg of modified auxiliary material are sequentially added into a kneader, stirred and heated to 160 ℃, treated for 40min, crushed and sieved by a 90-mesh sieve to obtain powdered wire drawing powder.
Example 2
Preparing modified auxiliary materials: crushing waste edible mushroom (morchella esculenta) sticks, and sieving with a 100-mesh sieve to obtain crushed materials; adding 3 times of water by mass into the crushed materials, mixing, carrying out ultrasonic treatment at 20kHz for 3min, filtering, taking filtrate, and concentrating to one third of the original volume to obtain concentrated solution; ③ adding an alcoholic solution (75 percent ethanol solution) into the concentrated solution with the same volume, standing for precipitation, performing centrifugal separation at 4000r/min, filtering, taking filter residue, and drying at the constant temperature of 50 ℃ to obtain the compound.
Preparing wire drawing powder: 4.8kg of calcium stearate and diatom ooze (with the porosity of 98 percent and the specific surface area of 70 m)20.5 kg/g) and 1.3kg of modified auxiliary materials are sequentially added into a kneader, stirred and heated to 160 ℃, treated for 40min, crushed and sieved by a 90-mesh sieve to obtain powdered wire drawing powder.
Example 3
Preparing modified auxiliary materials: crushing waste edible fungi (agrocybe cylindracea) sticks, and sieving the crushed edible fungi sticks with a 100-mesh sieve to obtain crushed materials; adding 3 times of water by mass into the crushed materials, mixing, carrying out ultrasonic treatment at 20kHz for 3min, filtering, taking filtrate, and concentrating to one third of the original volume to obtain concentrated solution; ③ adding an alcoholic solution (75 percent ethanol solution) into the concentrated solution with the same volume, standing for precipitation, performing centrifugal separation at 4000r/min, filtering, taking filter residue, and drying at the constant temperature of 50 ℃ to obtain the compound.
Preparing wire drawing powder: 5.0kg of calcium stearate and diatom ooze (with the porosity of 98 percent and the specific surface area of 70 m)2Per gram) 0.7kg and 1.5kg of modified auxiliary materials are sequentially added into a kneader, stirred and heated to 160 ℃, processed for 40min, crushed and sieved by a 90-mesh sieve to obtain powdered wire drawing powder.
Example 4
On the basis of the embodiment 1, in the step of preparing the wire-drawing powder, for sieving after crushing, the crushed wire-drawing powder is firstly sieved by a 90-mesh sieve, the bottom material of the sieve is taken, the bottom material of the sieve is sieved by a 500-mesh sieve, and the plus material of the sieve is taken, so that the wire-drawing powder is obtained.
Example 5
On the basis of example 2, the concentrated solution was directly spray-dried to prepare a modified adjuvant, which was prepared into a wire-drawing powder according to the method of example 2.
Test of
The method comprises the steps of taking a 55CrSi wire rod material as a steel wire drawing raw material, enabling the diameter of the wire rod to be phi 8mm, drawing with each equal compression ratio (8%), enabling the wire rod to directly penetrate through a wire drawing powder box in the drawing process, enabling the wire rod to be in contact with the wire drawing powder for 3min, enabling the wire rod to directly enter a drawing die to be subjected to multi-pass continuous drawing after penetrating through the wire drawing powder box, carrying out microscopic observation on the surface smoothness, damage and surface coking conditions of the drawn steel wire, testing the surface temperature of the steel wire drawn in the last pass, and counting the temperature in the following table 1.
And removing the iron oxide scales on the surface of the wire rod by adopting a shot blasting distortion mode before the wire rod enters the wire drawing powder box.
The powder used was the powder prepared in examples 1-5.
TABLE 1
Figure BDA0002597000100000051
Figure BDA0002597000100000061
The draw reduction in this test is the ratio of the difference of the wire rod diameter before drawing of each pass and the wire diameter after completion of drawing of each pass to the wire rod diameter before drawing of each pass. In the drawing process, the surface temperature of the drawn steel wire is generated by friction between the steel wire and a mould in the drawing and compressing process, if the surface temperature of the drawn steel wire is higher, the lubricating property between the steel wire and the mould is poor, and the defect is mainly caused by the following points:
(1) poor adhesion of the wire drawing powder: the amount of the wire drawing powder adhered to the surface of the steel wire is small, and the thickness is uneven;
(2) the lubricating property of the wire drawing powder is poor: the amount of the wire drawing powder adhered to the surface of the steel wire is good, but the lubricating property and the film forming property of the wire drawing powder are poor;
(3) poor ductility of wire drawing powder film forming: after the wire drawing powder is adhered to the surface of the steel wire, the wire drawing powder is drawn for multiple times, so that a film on the surface of the steel wire is inevitably stretched, the ductility is poor, and the wire drawing powder film layer adhered to the surface of the steel wire is intermittent on the surface of the steel wire during the next drawing, so that the drawing lubricity is influenced;
through the research of the multi-pass drawing test, the data in the table 1 show that the wire drawing powder provided by the invention is beneficial to improving the drawing performance of a wire rod in the multi-pass drawing process, the adhesion and the film forming property of the wire drawing powder on the surface of the wire rod are excellent, the lubricating property of an adhesion film layer is excellent, the multi-pass drawing of the steel wire can be met, and the drawing energy consumption of the steel wire is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (10)

1. The wire drawing powder for drawing the steel wire of the steel strand is characterized by comprising the following raw materials, by weight, 45-50 parts of calcium stearate, 3-7 parts of diatom ooze and 10-15 parts of modified auxiliary materials;
the modified auxiliary material is prepared by mixing waste edible fungus sticks with water, performing ultrasonic extraction and filtration, taking filtrate, concentrating, adding an alcohol solution in an equal volume, standing for precipitation, performing centrifugal separation, filtering and drying.
2. The wire drawing powder for drawing steel strands according to claim 1, wherein the raw material components comprise, by weight, 48 parts of calcium stearate, 5 parts of diatom ooze and 13 parts of modifying auxiliary materials.
3. The wiredrawing powder for drawing steel strand wires according to claim 1 or 2, wherein the modifying auxiliary material comprises: crushing waste edible fungus sticks, and sieving the crushed edible fungus sticks with a 100-mesh sieve to obtain crushed substances; adding 3 times of water by mass into the crushed materials, mixing, carrying out ultrasonic treatment at 20kHz for 3min, filtering, taking filtrate, and concentrating to one third of the original volume to obtain concentrated solution; ③ adding an alcohol solution into the concentrated solution with the same volume, standing for precipitation, performing centrifugal separation at 4000r/min, filtering, taking filter residue, and drying at the constant temperature of 50 ℃ to obtain the compound.
4. The wire-drawing powder for drawing steel strands according to claim 3, wherein the alcohol solution is an alcohol solution having a mass concentration of 75%.
5. The wire-drawing powder for drawing a steel strand wire as claimed in claim 1 or 2, wherein the diatom ooze has a porosity of 98% and a specific surface area of 70m2/g。
6. The method for preparing the drawing powder for drawing the steel strand wires as claimed in any one of claims 1 to 5, wherein the calcium stearate, the diatom ooze and the modified auxiliary materials are sequentially added into a kneader, stirred and heated to 160 ℃, treated for 40min, crushed and sieved to obtain the powdered drawing powder.
7. The method for preparing the wire-drawing powder for drawing the steel strand wires as claimed in claim 6, wherein the sieving is performed by twice sieving, wherein the first sieving is performed by a 90-mesh sieve, the bottom material of the sieve is taken, the second sieving is performed by a 500-mesh sieve, and the surface material of the sieve is taken and is the wire-drawing powder.
8. A modified auxiliary material for wire drawing powder is characterized by being extracted from waste edible fungus sticks.
9. The modified auxiliary material for the wire drawing powder as claimed in claim 8, wherein the extraction is carried out by mixing the waste edible fungus sticks with water, ultrasonic leaching, filtering, taking the filtrate, concentrating, adding alcohol solution with the same volume, standing for precipitation, centrifugal separation, filtering and drying.
10. A modifying additive for a dusting powder according to claim 8 or 9, characterised in that said extraction comprises the following steps:
crushing waste edible fungus sticks, and sieving the crushed edible fungus sticks with a 100-mesh sieve to obtain crushed substances; adding 3 times of water by mass into the crushed materials, mixing, carrying out ultrasonic treatment at 20kHz for 3min, filtering, taking filtrate, and concentrating to one third of the original volume to obtain concentrated solution; ③ adding an alcohol solution into the concentrated solution with the same volume, standing for precipitation, performing centrifugal separation at 4000r/min, filtering, taking filter residue, and drying at the constant temperature of 50 ℃ to obtain the compound.
CN202010712267.9A 2020-07-22 2020-07-22 Wire drawing powder for drawing steel wire of steel strand and preparation method thereof Pending CN111961519A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993008690A1 (en) * 1991-11-07 1993-05-13 Buckman Laboratories International, Inc. Synergistic combinations of iodopropargyl compounds with 1,2-benzisothiazolin-3-one in controlling fungal and bacterial growth in aqueous fluids
CN102823567A (en) * 2011-06-16 2012-12-19 吴玉良 Preparation method of bait for fishing crucian carps in still water
CN108003975A (en) * 2017-12-11 2018-05-08 当涂县宏宇金属炉料有限责任公司 A kind of metal wire rod wire drawing powder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993008690A1 (en) * 1991-11-07 1993-05-13 Buckman Laboratories International, Inc. Synergistic combinations of iodopropargyl compounds with 1,2-benzisothiazolin-3-one in controlling fungal and bacterial growth in aqueous fluids
CN102823567A (en) * 2011-06-16 2012-12-19 吴玉良 Preparation method of bait for fishing crucian carps in still water
CN108003975A (en) * 2017-12-11 2018-05-08 当涂县宏宇金属炉料有限责任公司 A kind of metal wire rod wire drawing powder

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
何培新等: "香菇废菌棒抽提物最佳工艺条件研究", 《中国食品添加剂》 *
刘青娥等: "二次正交旋转组合设计优化热水法提取香菇废菌棒多糖工艺的研究", 《浙江农业学报》 *
唐锠世: "《高合金钢丝线》", 31 May 2008, 冶金工业出版社 *

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