WO2005061141A1 - Huile lubrifiante pour étirage à froid - Google Patents

Huile lubrifiante pour étirage à froid Download PDF

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Publication number
WO2005061141A1
WO2005061141A1 PCT/JP2003/016500 JP0316500W WO2005061141A1 WO 2005061141 A1 WO2005061141 A1 WO 2005061141A1 JP 0316500 W JP0316500 W JP 0316500W WO 2005061141 A1 WO2005061141 A1 WO 2005061141A1
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WO
WIPO (PCT)
Prior art keywords
metal salt
lubricating oil
tube
alkali metal
coating
Prior art date
Application number
PCT/JP2003/016500
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English (en)
Japanese (ja)
Inventor
Kenichi Beppu
Takeaki Suzuki
Shinobu Komiyama
Original Assignee
Sumitomo Metal Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries, Ltd. filed Critical Sumitomo Metal Industries, Ltd.
Priority to PCT/JP2003/016500 priority Critical patent/WO2005061141A1/fr
Priority to CNB2003801108920A priority patent/CN100376337C/zh
Publication of WO2005061141A1 publication Critical patent/WO2005061141A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C9/00—Cooling, heating or lubricating drawing material
    • B21C9/005—Cold application of the lubricant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C9/00—Cooling, heating or lubricating drawing material
    • B21C9/02—Selection of compositions therefor

Definitions

  • the present invention relates to a lubricating oil and a lubricating coating used for cold drawing of a steel pipe for a machine structure, and a production method using the same. More specifically, the present invention relates to a high-strength, surface- The present invention relates to a lubricating oil and a lubricating film which are optimal for cold drawing of a steel pipe for a machine structure, and a method of manufacturing a cold drawn steel pipe.
  • a drawing method using a doro bench and a rolling method using a pilger mill are known.
  • the drawing method using the doro-bench can produce a high-quality cold-finished steel pipe more efficiently than the rolling method using the pilger mill.
  • the cold drawing method using this dro-bench (hereinafter, the cold drawing method using this dro-bench is referred to as “cold drawing”) is used to manufacture steel pipes for machine structures such as automobiles. Commonly used.
  • lubrication is required as a pretreatment. From the viewpoint of workability in the cold drawing process and the quality of the steel pipe, it is important to ensure lubricity by lubrication and to prevent seizure.
  • a conversion coating of zinc phosphate is formed on the surface of the tube in advance, and furthermore, A method of forming a lubricating film such as a metal stone on the film is known.
  • Japanese Patent Application Laid-Open No. H10-2866616 discloses a device for applying lubricating oil to the inner surface of a pipe via a hollow mandrel at the time of drawing, wherein the residual oil in the hollow mandrel is stored in a tank.
  • a pipe inner surface oiling device in which a relief valve is provided in the piping path returning to the pipe.
  • the base oil is 10 to 60% by weight and the sulfur-based extreme pressure is reduced.
  • a lubricating method using a lubricating oil has been proposed in which an additive of 10 to 60% by weight and a thickener is mixed at 35% by weight, and the viscosity at 40 ° C is 100 to 500 centipoise. I have.
  • Japanese Patent Publication No. 4-488839 discloses that after pickling a carbon steel, alloy steel wire, rod or tube, the material surface has a viscosity of 100 to 100 ° C at 20 ° C.
  • a lubrication treatment method for applying a lubricating oil having a viscosity of 300 centipoise is disclosed.
  • the composition of the proposed lubricating oil is a compound of 5-40% of a dialkyl polysulfide having a sulfur content of 30% or more, and a compound of oil and fat and olefin, and the sulfur content in the compound is 15%. 20 to 70% of a compound selected from the above combined, etc., one or more base oils selected from fats and oils, synthetic oils, mineral oils and higher fatty acids, and a polyisobutylene-based thickener, It is composed of at least one or more thickeners selected from olefin copolymer thickeners and polymethacrylate thickeners.
  • the base tube is immersed in an aqueous solution containing a metal salt, and the metal salt of boric acid is coated on the inner and outer surfaces of the base tube.
  • a method for producing a cold drawn steel pipe in which a coating of an alkali metal salt of boric acid and a metal salt of a fatty acid is formed, and a liquid lubricant is applied thereon to perform cold drawing. I have.
  • the steel pipe is often used as it is as a structural member without grinding the inner and outer surfaces of the steel pipe after cold drawing.
  • zinc phosphate and a part of metal lithography adhere to the surface of the steel pipe after cold drawing, and the metallic luster of the cold drawn steel pipe is impaired. Become.
  • oil lubrication treatment in which lubricating oil is applied to the tube surface before cold drawing, simplifies the treatment process and can significantly reduce the number of work steps and running costs as compared with the conversion coating treatment. For this reason, oil lubrication is increasingly used as a pretreatment for cold drawing.
  • steel pipes for automobiles and other mechanical structures are required to have high strength and are used without grinding the surface, so they must be annealed in a low-temperature atmosphere conditioning furnace after cold drawing. Is required.
  • Japanese Patent Application Laid-Open Nos. Sho 62-236986 and Japanese Patent Publication No. 4-48839 disclose the use of sulfur (S) type extreme pressure additives to improve lubricity during cold drawing.
  • S sulfur
  • Japanese Patent Application Laid-Open No. 2002-192922 discloses that the inner and outer surfaces of the raw tube are made of metal alloy.
  • the purpose of the present invention is to form a salt film and suppress the occurrence of seizure during cold drawing, and at the same time, to prevent phosphorus immersion in heat treatment after cold drawing.
  • the present invention is intended to secure lubricity when performing cold drawing by oil lubrication processing on the assumption that low-temperature annealing is performed in a low-temperature atmosphere furnace.
  • the present inventors have conducted various studies in order to respond to the demand for high strength of steel pipes for mechanical structures and to omit the demand for surface grinding of steel pipes. As a result, the following (a) to (c) are important technical matters. I noticed that.
  • the heating temperature is set to be equal to or lower than 65 ° C. for the reason described later.
  • the present inventors examined the relationship between S-based extreme pressure additives in lubricating oil and annealing residues in order to ensure lubricity, prevent seizure, and reduce annealing residues. Was added.
  • the same effect can be obtained by forming a coating film of an alkali metal salt of phosphoric acid instead of the alkali metal salt of boric acid. Further, a film of an alkali metal salt of boric acid and an alkali metal salt of phosphoric acid may be formed.
  • the present inventors have presupposed the above-mentioned examination results, and based on different viewpoints, have different lubricating properties, but all have the best lubricating oil for producing cold drawn steel pipes with excellent surface properties. Development proceeded.
  • S-based extreme pressure additives added to lubricating oil to enhance lubricity tend to remain as annealing residues themselves, and also cause thermal decomposition of the base lubricating oil. Therefore, we decided to minimize the amount of S-based extreme pressure additives.
  • the first lubricating oil of the present invention has been completed based on the first paying attention above, S content is 3 mass% or less, a viscosity of 5 X 1 0- 4 ⁇ 1 X
  • the S-based extreme pressure additive added to the lubricating oil forms a low-shear F e S, F e 2 S, etc. on the surface of the tube where cold drawing is performed, and seizure occurs. The occurrence of is suppressed.
  • S in the lubricating oil itself becomes an annealing residue and hinders the volatility of the lubricating oil.
  • Fig. 1 is a graph showing the relationship between the amount of residual oil on the steel pipe surface after cold drawing and the S detection intensity. Since the oil amount and oil film thickness in cold drawing are proportional to the viscosity of the lubricating oil, the viscosity of the lubricating oil is adjusted to change the amount of residual oil (g Zm 2 ) after cold drawing. The amount of sulfur (Kcps) on the surface of the steel pipe was detected by X-ray fluorescence analysis. The S content in the lubricating oil used was three types: 5% by mass, 20% by mass and 30% by mass.
  • F e S, F e 2 S, etc. is a reaction that occurs at the interface of the tube surface, and is therefore limited to a partial reaction of S contained in the lubricating oil. Therefore, urchin by are shown in FIG. 1, increasing the amount of oil adhering to the blank tube surface, F e S being formed, F e 2 S or the like is not much change.
  • the S detection intensity greatly depends on the S content in the lubricating oil.
  • F e S forming amount of such F e 2 S of blank tube surface will depend on the S-containing organic content in the lubricating oil, the influence of the oil quantity and oil film thickness is small. Therefore, F e S to blank tube surface to ensure lubrication and to effectively form a F e 2 S, etc., it is necessary to use a lubricant having a predetermined S content.
  • F e S after the formation of such F e 2 S, in order to reduce the amount of S remaining in the lubricating oil (absolute amount), less amount of oil adhering to the blank pipe, or oil film The thickness may be reduced.
  • oil amount and oil film thickness in cold drawing are proportional to the viscosity of the lubricating oil
  • S content of the lubricating oil according to the lubricity by selecting the appropriate viscosity, F e S of blank tube surface, to ensure formation of such F e 2 S, can be reduced amount of S remaining in the lubricating oil.
  • the second lubricating oil of the present invention is the well has been completed based on the second paying attention above, S content is 1 0-3 0% by weight, a viscosity of 5 X 1 0 _ 5 ⁇ 2 is characterized in that it is 4 m 2 / s (5 0 ⁇ 2 0 0 c S t) - X 1 0. (3) Methods for manufacturing lubricating coatings using the first and second lubricating oils and cold drawn steel pipes
  • a film of an alkali metal salt of phosphoric acid may be formed instead of the alkali metal salt of boric acid, or a film of an alkali metal salt of boric acid or a film of an alkali metal salt of phosphoric acid. And a similar effect can be exerted.
  • the lubricating coating of the present invention comprises an alkali metal borate coating formed on the inner and outer surfaces of the immersed pipe and the first lubricating oil or the second lubricating oil applied to the coating surface. It is characterized by being composed of oil.
  • the lubricating coating of the present invention may be formed by forming an alkali metal salt coating of phosphoric acid on the inner and outer surfaces of the raw tube, and the alkali metal borate and the phosphoric acid on the inner and outer surfaces of the raw tube.
  • a metal salt coating may be formed.
  • the method for producing a cold drawn steel pipe includes the steps of: Dipping in an aqueous solution containing a metal salt to form a boric acid alkali metal film on the inner and outer surfaces of the tube, and applying the first lubricating oil or the second lubricating oil on the surface of the film After cold-drawing, the furnace is annealed at 65 ° C or lower while supplying a CO-containing gas to the furnace atmosphere.
  • an aqueous solution containing an alkaline metal salt of phosphoric acid is used instead of the aqueous solution containing the alkali metal salt of boric acid, and the inner and outer surfaces of the raw tube are used.
  • a metal coating of phosphoric acid can be formed on the surface.
  • an aqueous solution containing the boric acid alkali metal salt an aqueous solution containing the boric acid alkali metal salt and the phosphoric acid alkali metal salt is used, and boric acid is coated on the inner and outer surfaces of the raw tube.
  • An alkali metal salt and an alkali metal salt film of phosphoric acid can be formed.
  • lubricating oil and lubricating film for cold drawing of this invention lubricating property can be ensured at the time of cold drawing, and an annealing residue can be reduced to 3 gZm ⁇ 2 > or less. Therefore, if these are subjected to an oil lubrication treatment to produce a cold drawn steel pipe, it is possible to provide an optimum steel pipe as various mechanical structural members including those for automobiles.
  • cold drawn steel pipe is a steel pipe obtained by cold drawing a carbon steel, alloy steel such as chrome steel or chrome molybdenum steel, or stainless steel pipe, and is used for automobiles and other industries.
  • CO-containing gas defined by the manufacturing method of the cold drawn steel pipe of the present invention is a gas that is supplied in order to prompt the circulation of the atmosphere, ventilation, for example, volume 0 /.
  • H 2:.. 0 1 ⁇ 1 5% referred to the gas and the balance N 2.
  • Figure 1 shows the relationship between the amount of residual oil on the steel pipe surface after cold drawing and the S detection intensity.
  • the base tube is immersed in an aqueous solution in advance during cold drawing, and the inner and outer surfaces of the base tube are coated with an alkali metal salt of boric acid or an alkali metal salt of Z and phosphoric acid.
  • the base tube As a base treatment for the lubricating oil, the base tube is immersed in an aqueous solution containing an alkali metal salt of boric acid to form a coating film of an alkali metal salt of boric acid on the inner and outer surfaces of the base tube.
  • the coating of an alkali metal salt of boric acid has good adhesion to the base tube, and also has excellent retention when lubricating oil is applied on the coating. Therefore, by forming a coating of boric acid alkali metal salt on the surface of the base tube and applying lubricating oil on the surface, the base tube and the drawing tools (dies and plugs) can be connected during cold drawing. The frictional force between them can be reduced, and seizure between the raw tube and the drawing tool can be prevented.
  • the coating thickness of the alkali metal borate is preferably set to 0.4 to 20 / im. If the coating thickness exceeds 20 ⁇ m, it will be easy to peel off. In some cases, the lubricating oil remains on the surface of the steel pipe and remains as an annealing residue after annealing. On the other hand, if the coating thickness is less than 0.1, direct contact between the surface of the raw tube and the drawing tool occurs, and the holding power of the lubricating oil is reduced, so that the lubricity may be reduced.
  • alkali metal salts of boric acid examples include lithium borate, potassium borate, And sodium borate. Of these, potassium borate is desirable.
  • the tube In order to form a coating film of an alkali metal borate on the inner and outer surfaces of the tube, the tube is immersed in an aqueous solution containing the alkali metal borate.
  • the thickness of the coating is adjusted by adjusting the immersion time or the temperature of the aqueous solution, so that the thickness of the coating after the treatment is desirably 0.4 to 20 / im.
  • the concentration of the boric acid alkali metal salt in the aqueous solution may be determined in consideration of the thickness of the coating, the immersion time, and the like. For example, the concentration is preferably in the range of 2 to 10% by mass. It is.
  • the temperature of the aqueous solution is preferably in the range of 70 to 100 ° C.
  • a coating of an alkali metal borate is formed on the inner and outer surfaces of the tube. Drying of the immersed tube may be performed by a usual method in which the tube is placed in a drying room at about 150 ° C.
  • an aqueous solution containing an alkali metal salt of boric acid is used instead of the aqueous solution containing an alkali metal salt of boric acid, and the inner and outer surfaces of the raw tube are used.
  • a similar effect can be obtained by forming a film of a metal salt of phosphoric acid on the surface.
  • this coating also has good adhesion to the raw pipe, excellent retention of lubricating oil, and can suppress seizure between the raw pipe and the drawing tool during cold drawing.
  • the effects of the alkali metal salt of boric acid and the alkali metal salt of phosphoric acid are slightly different.
  • the former has the effect of increasing the adhesion between the raw tube and the coating, and further improving the retention of the lubricating oil applied on the coating to prevent seizure between the raw tube and the drawing tool.
  • the latter not only enhances the retention of lubricating oil applied to the surface of the coating, but also has the effect of preventing direct contact between the raw tube and the drawing tool and preventing seizure.
  • the film thickness is 0.4 to 20 / zm as in the case of the alkali metal borate.
  • alkali metal salts of phosphoric acid examples include sodium diphosphate, sodium tertiary phosphate, sodium pyrophosphate and the like. Of these, sodium diphosphate is preferred.
  • the coating of the phosphoric acid metal salt on the inner and outer surfaces of the raw tube may be formed by an immersion method as in the case of the boric acid alkali metal salt.
  • concentration of the alkali metal salt of phosphoric acid in the aqueous solution is suitably, for example, in the range of 0.1 to 0.5% by mass, and the temperature of the aqueous solution is 60 to 100 ° C. It should be a range.
  • the drying of the tube after immersion may be performed in the same manner as in the case of the alkali metal salt of boric acid.
  • an aqueous solution containing the alkali metal borate and the alkaline metal salt of phosphoric acid is used instead of the aqueous solution containing the alkali metal borate. Similar effects can be obtained by forming a coating of boric acid metal salt and phosphoric acid metal salt on the inner and outer surfaces of the raw tube.
  • the desired coating thickness, film formation, and subsequent drying are also performed using the alkali metal salt of boric acid. You can do it in the same way.
  • the concentration of both alkali metal salts in the aqueous solution is suitably adjusted so that the total concentration thereof is in the range of, for example, 0.1 to 3.0% by mass.
  • the lubricating coating of the present invention forms a coating of an alkali metal salt of boric acid or an alkali metal salt of phosphoric acid on the inner and outer surfaces of the pipe as a base treatment. Apply a lubricating oil described later to form a two-layer structure. By doing so, excellent lubricity can be exhibited even in cold drawing of carbon steel, alloy steel, or stainless steel.
  • the first lubricating oil of the present invention S content is 3 mass% or less, a viscosity of 5 X 1 0 - 4 ⁇ : LX 1 0- 3 m 2 / s (4 0 0 ⁇ 1 0 0 0 c S t).
  • the reason why the S content of the first lubricating oil is set to 3% by mass or less is that, for example, when the S content exceeds 3% by mass by adding an S-based extreme pressure additive to the lubricating oil, This is because the amount of annealing residue increases and thermal decomposition of lubricating oil is hindered.
  • the S content of the first lubricating oil is desirably as small as possible from the viewpoint of suppressing the generation of annealing residues, and S may not be contained. However, the presence of even a small amount of S has the effect of preventing seizure from occurring. Therefore, in practice, the S content is desirably 1.5 to 3% by mass.
  • the viscosity (kinematic viscosity) of the first lubricating oil is 4 X 10 _ 4 to 1 X 10-3 m 2 // s (4
  • the second lubricating oil to which the present invention is employed a 1 0-3 0% by weight the S content, the viscosity 5 X 1 0- 5 ⁇ 2 X 1 0- 4 m 2 Zs (5 0 ⁇ 200 cSt).
  • the viscosity is 5 X 1 0- 5 m 2 / s by Ri low, the less amount of oil adhering to the blank tube surface during the cold drawing mother tube and the lubricating oil to between drawing tool Insufficient amount of drawing may cause direct contact between the tube and the drawing tool, causing seizure on the tube.
  • the lubricating oil used in the present invention does not limit the base oil to a specific one.
  • animal and vegetable oils such as lard, tallow, whale oil, palm oil, coconut oil, rapeseed oil, synthetic oils, Mineral oil can be used.
  • a conventional method may be used. For example, a method of supplying lubricating oil to the outer surface of a raw pipe from a nozzle arranged around the outer circumference of the raw pipe, and a method of supplying lubricating oil to a raw pipe from a hole provided in a hollow mandrel bar inserted inside the raw pipe. The method of supplying to the inner surface can be applied.
  • cold drawing is performed.
  • the cold drawing of the present invention may be performed by a commonly used method, and it is not necessary to use only a particularly limited method.
  • the annealing in the present invention aims at securing the strength of the cold drawn steel pipe. Then, the processing strain generated by the cold drawing is left. If the annealing temperature is too high, the work strain will recover and the effect of work hardening cannot be obtained.
  • the effect of work hardening can be obtained by annealing the cold drawn steel pipe at a temperature of 65 ° C. or lower.
  • the lower limit of the annealing temperature in order to maintain stable combustion in the furnace, it is desirable to set the lower limit of the annealing temperature to 350 ° C.
  • the holding time of the cold drawn steel pipe in the furnace be 5 minutes or more.
  • the furnace used for annealing may be a batch-type closed furnace or a roller hearth-type furnace, and may be a continuous furnace in which the loading and unloading sections for the material to be treated are opened. In the present invention, it is desirable to use a continuous bright annealing furnace.
  • the atmosphere is non-oxidizing, the carbon in the lubricating oil is not oxidized, and since the processing temperature is as low as 65 ° C. or less, the lubricating oil adhering to the surface of the cold drawn steel pipe Oil tends to remain as annealing residue such as soot dirt (sticking). Therefore, a sufficient amount of CO-containing gas is supplied to prevent soot contamination from remaining while maintaining sufficient ventilation.
  • the supply amount of CO-containing gas to the furnace be 0.5 times or more the furnace volume per hour. If the furnace volume is less than 0.5 times, the thermally decomposed lubricating oil becomes soot and easily adheres to the surface of the cold drawn steel pipe.
  • the supply amount of the gas is too large, the cost is too high for the effect and it is economically disadvantageous. Therefore, it is preferable that the supply amount be four times or less the furnace volume.
  • supply of gas four times the furnace volume per hour While supplying the gas little by little into the furnace, it means discharging the same amount of gas from the furnace and supplying gas four times the furnace volume in one hour.
  • Table 1 shows the conditions for oil lubrication, including the S content and viscosity of the lubricating oil used, and the type and presence or absence of the metal salt used in the base treatment before applying the lubricating oil.
  • the annealing residue in the column of "annealing residue”, .smallcircle the annealing residual amount is 3 g Zm 2 or less, ⁇ mark also 3 g Zm 2 beyond 5 g / m 2 or less, X mark also 5 g / m 2 greater It means that, and the mark ⁇ indicates that it was good. Further, the “tensile strength” was evaluated to be good if the tensile strength was at least 50 MPa. In the column of “Comprehensive evaluation”, the mark ⁇ is extremely good, the mark ⁇ is good, and the mark ⁇ ⁇ ⁇ and X indicate that, although varying in degree, both are bad. ⁇ or ⁇ indicates that it was good.
  • borate potassium borate
  • phosphate dibasic sodium phosphate *: out of the range specified in the present invention
  • the S content of the lubricating oil is within the range of the "first lubricating oil" defined in the present invention, and the film of boric acid or the alkali metal salt of phosphoric acid is formed. When it was formed (Examples 1 to 3 of the present invention), good results were obtained.
  • Example 2 In the same manner as in Example 1, the outer diameter of the tube was reduced to 70.O mmX and the outer diameter was reduced to 6.0.O mmX and the thickness was 3.4 mm by cold drawing. Annealing was performed in an atmosphere furnace under the same conditions to obtain a cold drawn steel pipe.
  • borate potassium borate
  • phosphate dibasic sodium phosphate *: out of the range specified in the present invention
  • the display method of the results in the columns of “burn-in” and “annealing residue” in Table 2 is the same as that in Example 1.
  • the “tensile strength” was evaluated as good if it was 5 10 MP & more.
  • the S content and the viscosity of the lubricating oil are within the range of the “first lubricating oil” specified in the present invention, and the heat treatment temperature is within the range specified in the present invention.
  • the heat treatment temperature is within the range specified in the present invention.
  • the annealing temperature is lower than the temperature specified in the present invention.
  • an undercoat treatment (including no treatment) by forming a coating of anorecali metal salt and a two-layer oil lubrication treatment by applying lubricating oil were performed.
  • the outer diameter was 70 mm and the wall thickness was 4.0 mm.
  • the outer diameter of the steel pipe was reduced to 60 mm x wall thickness by 3.4 mm by cold drawing.
  • the gas containing 2.1% by volume of CO was supplied in a non-oxidizing atmosphere furnace at a temperature of 560 ° C or Annealing was performed at 700 ° C. for 20 minutes to obtain a cold drawn steel pipe.
  • Table 3 shows the conditions of the oil lubrication treatment, the annealing conditions, and the evaluation results of the cold drawn steel pipe.
  • the conditions for oil lubrication are shown as the S content and viscosity of the lubricating oil used, and the type and presence or absence of Al-metallic metal salt used in the base treatment before applying the lubricating oil. .
  • the display method of the results in the columns of “burn-in” and “annealing residue” in Table 3 is the same as that in Example 1. Further, the “tensile strength” was evaluated as good if it was 51 OMPa or more.
  • borate potassium borate
  • phosphate dibasic sodium phosphate
  • the scale thickness of the inner and outer surfaces of the cold drawn steel pipe obtained in the present invention example was 10 / Xm or less in each case.
  • Comparative Examples 35 and 36 since the undercoating treatment was not performed, the occurrence of image sticking was remarkable.
  • Comparative Examples 37 to 42 since the S content of the lubricating oil or the viscosity of the lubricating oil was out of the range of the “second lubricating oil” defined in the present invention, the alkali metal salt film was formed. However, there were many seizures and large amounts of annealing residues.
  • First lubricating oil of the present invention is in the S content is 3 wt% or less, a viscosity of 5 X 1 0 _4 ⁇ : LX 1 0- 3 m 2 Zs (4 0 0 ⁇ : LOOO c S t) Power
  • the “second lubricating oil” has an S content of 10 to 30% by mass and a viscosity of 5 ⁇ 10 to 2 ⁇ 10 to m 2 / s (50 to 200 c S t) forces, which can secure lubricity and reduce annealing residue to 3 g Zm 2 or less during cold drawing of steel pipes using these. Therefore, it is possible to provide an optimal cold drawn steel pipe as various mechanical structural members including those for automobiles. More specifically, if the manufacturing method of the present invention is adopted, a cold drawn steel pipe that sufficiently reduces the annealing residue and the seizure portion without further grinding the surface after cold drawing and further ensures high strength. Can be provided.

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Abstract

L'invention concerne une première huile lubrifiante pour étirage à froid, présentant une teneur en S atteignant au maximum 3 %, et une viscosité comprise entre 5 X 10-4 et 1 x 10-3 m2/s (400 à 1000 cSt) ; et une seconde huile lubrifiante pour étirage à froid présentant une teneur en S de 10 à 30 % en masse, et une viscosité comprise entre 5 X 10-5 et 2 X10-4 m2/s (50 à 200 cSt). Une pellicule de revêtement formée avec l'une des huiles lubrifiantes décrite permet à la fois d'assurer une lubrification satisfaisante pendant l'étirage, et de réduire la quantité de résidus de recuit à une quantité égale ou inférieure à 3 g/m2.. Le traitement de lubrification réalisé avec l'huile décrite lors de l'étirage à froid permet la production de tubes d'acier étirés à froid convenant pour former des éléments structuraux de divers mécanismes, par exemple dans une automobile.
PCT/JP2003/016500 2003-12-22 2003-12-22 Huile lubrifiante pour étirage à froid WO2005061141A1 (fr)

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PCT/JP2003/016500 WO2005061141A1 (fr) 2003-12-22 2003-12-22 Huile lubrifiante pour étirage à froid
CNB2003801108920A CN100376337C (zh) 2003-12-22 2003-12-22 冷拔用润滑油和润滑覆膜及冷拔钢管的制造方法

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EP2583763B1 (fr) * 2010-06-15 2018-08-08 Nippon Steel & Sumitomo Metal Corporation Procédé d'étirage de tube métallique et procédé de production de tube métallique utilisant celui-ci
CN102764958B (zh) * 2012-07-13 2014-09-24 江苏中友精密制管有限公司 冷轧/冷拔精密焊接钢管制造工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6174726A (ja) * 1984-09-18 1986-04-17 Sumitomo Metal Ind Ltd 管の冷間抽伸方法
JPH09248619A (ja) * 1996-03-15 1997-09-22 Sumitomo Metal Ind Ltd 合金鋼鋼管の潤滑法およびその製造方法
JPH09295038A (ja) * 1996-05-08 1997-11-18 Sumitomo Metal Ind Ltd 炭素鋼鋼管の冷間引抜き法および製造方法
JP2004025201A (ja) * 2002-06-21 2004-01-29 Sumitomo Metal Ind Ltd 冷間引抜き鋼管の製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1021915C (zh) * 1990-08-22 1993-08-25 远东钢丝针布厂 钢丝冷拔润滑剂及其制备方法
CN1155736C (zh) * 2000-08-02 2004-06-30 暨南大学 钢铁冷变形加工的磷化液及其磷化工艺

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6174726A (ja) * 1984-09-18 1986-04-17 Sumitomo Metal Ind Ltd 管の冷間抽伸方法
JPH09248619A (ja) * 1996-03-15 1997-09-22 Sumitomo Metal Ind Ltd 合金鋼鋼管の潤滑法およびその製造方法
JPH09295038A (ja) * 1996-05-08 1997-11-18 Sumitomo Metal Ind Ltd 炭素鋼鋼管の冷間引抜き法および製造方法
JP2004025201A (ja) * 2002-06-21 2004-01-29 Sumitomo Metal Ind Ltd 冷間引抜き鋼管の製造方法

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