CN1171434A - Aqueous lubricant for cold working of metal materials - Google Patents

Aqueous lubricant for cold working of metal materials Download PDF

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Publication number
CN1171434A
CN1171434A CN97117136A CN97117136A CN1171434A CN 1171434 A CN1171434 A CN 1171434A CN 97117136 A CN97117136 A CN 97117136A CN 97117136 A CN97117136 A CN 97117136A CN 1171434 A CN1171434 A CN 1171434A
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Prior art keywords
lubricant
water
tunicle
oil
inorganic salt
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CN97117136A
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Chinese (zh)
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CN1061367C (en
Inventor
村田元治
松村由男
西泽嘉彦
小山隆
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Nihon Parkerizing Co Ltd
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Nihon Parkerizing Co Ltd
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    • C10M129/26Carboxylic acids; Salts thereof
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    • C10M129/38Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
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  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)
  • Metal Extraction Processes (AREA)

Abstract

The present invention provided an aqueous lubricant for cold plastic working of a metallic material as an aqueous system having high lubricity without inducing an environmental problem in comparison with a former lubricating system combining a chemical film treatment such as a phosphate treatment to an oxalate treatment with a reaction-type soap treatment, capable of treating in one process, and easily peeling a film, and further not inducing lowering of scorching property caused by attaching unevenness even when treating large quantities of processing materials by a dipping method. Waterborne lubricants comprising: (A) water-soluble inorganic salt; (B) homogeneously dispersed solid lubricant; (C) at least one homogeneously emulsified substance selected from mineral oils, animal and plant oils and fats, and synthetic oils; (D) surfactant; and (E) water, in which the weight ratio (B)/(A) is from 0.05:1 to 2:1 and the weight ratio {C/(A+B)} is from 0.05:1 to 1:1, provide a one-step, highly lubricating waterborne lubricant for use in the cold plastic working of metals.

Description

The aqueous lubricant for cold working of metallic substance
The aqueous lubricant for cold working of the metallic substance that uses when the invention relates to metallic substance such as cold plasticity processing (forging, tube drawing, wire drawing etc.) iron and steel, titanium and titanium alloy, copper and copper alloy, aluminium and aluminium alloy (below, be called for short hydrographic lubricant).
In the plastic working of metallic substance for example in the cold-drawn processing of steel pipe, in order to reduce the friction that produces between the instruments such as machined material and drawing-die, plug, prevent and kill or hot glue, carry out drawing processing easily, use the lubricant that forms aqueous tunicle or form the tunicle of solid state.
Among the lubricant of this class, the representative of aqueous lubricant is to be so-called oily base lubricant with mineral oil, vegetable and animals oils and synthetic wet goods as base oil, and general the use from being assembled in lubricant application device on the processing unit (plant) flows directly to lubricating method on instrument or the work material.Oil is that the lower occasion of degree of finish is more common in the use of lubricating oil, in the higher occasion of degree of finish, oil viscosity is risen, and perhaps adds solid lubricant and the lubricating oil additive of anti-the extreme pressure and uses.And the representative of solid tunicle to be the so-called chemical tunicle that forms well attached carrying tunicle with machined material reaction, with matrix handle, for carbon steel and low alloy steel, forming zinc phosphate is the phosphate coating processing of tunicle, for stainless steel, the oxalate coating that forms ironic oxalate system is handled.After carrying out these chemical tunicles processing, usually carry out response type soap swabbing, by carrying out by 2 such swabbing that operation is formed, the oilness that the load and the response type soap lubricant of chemical tunicle can be produced combines, and this lubricating method demonstrates high heat-resisting deadlocked property.In addition, after handling, chemical tunicle carries out the occasion of response type soap swabbing, usually work material is in the drawing first being processed, to in various treatment troughs, carry out dip treating, owing to be that response type is handled, no matter so work material each other wire ground contact part have what, lubricant adhere to irregular also to be few, to take the concentrated mode of handling with several 10 units.
But, high speed along with processing conditions, high-pressure trend and to the environment aspect, the requirement of energy aspect, require to solve the equal or higher lubricity of lubrication that has with chemical tunicle is handled and response type soap swabbing makes up, and the problem of aspect chemical tunicle, finding, for example the problem of operating environment (for example, using acid at 80-90 ℃ high temperature is treatment solution, therefore the foul smell and the smog of treatment solution make environmental degradation), the problem of environment aspects such as the problem of waste management, and shortening operation, energy-conservation, the problem of cost aspect such as save space, and then the lubricant of the problem (will carry out alkali degreasing and cleanup acid treatment usually) of the tunicle separability after the processing etc.
In occasion, in the fair 4-1798 of spy, disclose " cold working of complexed metal soap and solid lubricant with lubricator in the lubricating oil of the multipolymer of the lubricating oil additive of anti-extreme pressure the such as cooperation clorafin, phosphoric acid ester and iso-butylene and n-butene and vegetable and animals oils " for the oily base lubricant that addresses these problems.But, even these high perofmrnace lubricating oils, compare with the lubrication that carries out response type soap swabbing after the chemical tunicle processing, some shortcomings are also arranged on processing characteristics, in addition, owing to a large amount of use anti-extreme pressure agent (lubricating oil additive of anti-the extreme pressure), add and produce foul smell man-hour, and chlorine and phosphorus might corrode material production in the softening annealing process after processing.
In addition, in the occasion of hydrographic lubricant, have directly and use two kinds of situations with the wet type use with the dry type tunicle.The direct hydrographic lubricant that uses with wet type, flow directly on instrument or the work material as above-mentioned oily base lubricant and use, hydrographic lubricant with the use of dry type tunicle, be after in treatment trough, carrying out dip treating as above-mentioned chemical tunicle, in drying process, make moisture evaporation and obtain the solid tunicle.The former, in the public clear 58-30358 of spy, put down in writing " with supercarbonate (solid substance) be principal constituent, to the cold working or the warm lubricants for use in processing of the metal tube that wherein adds a spot of dispersion agent, tensio-active agent and solid lubricant " in existing the description, replace chemical tunicle to handle and widely used degree but reach.As for the latter, " with water-soluble polymer or its water-based emulsion as body material; cooperate solid lubricant and chemical tunicle to form the lubricated coating composition (spy opens clear 52-20967) of agent " and " borax that is used in combination is tunicle and the calcium soap and the metallic soap of principal constituent; Stainless Steel Wire is carried out hot candied method for processing (spy opens clear 50-147460) " have description in waiting, but, at a large amount of dip treating work materials once, carrying out forced drying then obtains under the situation of dry coationg, certainly lead to owing to adhering to of causing of the part of work material contact is irregular, the result does not reach solution adds the non-response type lubricant that causes that hot glue man-hour easily in drawing big shortcoming.
In sum, also do not have at present to replace chemical tunicle such as phosphatizing and oxalate processing is handled the lubricating system that constitutes with response type soap treatment combination, realize the lubricant that processing characteristics, environment, offal treatment, energy-conservation, tunicle separability etc. require with 1 operation.
The present invention adapts to such requirement and finishes, its purpose is, replacement is handled the lubricating system that forms with response type soap treatment combination with chemical tunicle such as phosphatizing and oxalate processing, provide a kind of and belong to water system, have high lubricity, do not have above-mentioned environment aspect problem, can handle with 1 operation, tunicle is peeled off easily, promptly use pickling process in large quantities the processing material do not produce aqueous lubricant for cold working by the metallic substance that adheres to the inhomogeneous and hot glue property the reduction that causes yet.
Further investigate in order to address the above problem the inventor, found that, to be attached to well on the matrix, to lubricate the water-soluble inorganic salt of the material that forms tunicle on the composition import tool face as body material, by this body material, solid lubricant as lubricated composition, as lubricated composition or lubricated auxiliary substance by mineral oil, the oil component of selecting in vegetable and animals oils and the synthetic oil, tensio-active agent and water are formed, water-soluble inorganic salt, the hydrographic lubricant that usage ratio between solid lubricant and the oil component satisfies certain condition can address the above problem.Promptly, use above-mentioned hydrographic lubricant to add the occasion of the lubricant in man-hour, in the drying process that carries out after impregnating is handled, form solid lubricant dispersive inorganic salt tunicle on the metallic surface as the cold plasticity of metal, simultaneously, oil component is exuded to the peripheral portion of tunicle and forms oil film.This oil film give the initial stage that adds man-hour lubricated in, the solid lubricant that remedies work material contact part to each other adheres to irregular, thereby significantly improves heat-resisting deadlocked property.
Moreover only the processing of carrying out with common alkali cleaner just can be removed the lubricated composition on the metallic substance that remains in after the plastic working.
Like this, the invention relates to the aqueous lubricant for cold working of metal, this lubricant is made up of following ingredients:
(A) water-soluble inorganic salt;
(B) solid lubricant;
(C) be selected from least a oil component in mineral oil, animal-plant oil and the synthetic oil;
(D) tensio-active agent;
(E) water; The weight ratio of solid lubricant and water-soluble inorganic salt (B/A) is 0.05/1-2/1, total amount with respect to water-soluble inorganic salt and solid lubricant, the weight ratio of oil component (C/ (A+B)) is 0.05/1-1/1, and solid lubricant and oil component disperse and emulsification separately equably.
Below explain the present invention.
(A) water-soluble inorganic salt, be constitute with hydrographic lubricant of the present invention form well attached to the perpendicular main body of consolidating tunicle on the metallic matrix, so long as just can as the general water-soluble inorganic salt that uses of vehicle of the cold plasticity of metallic substance processing, have no particular limits, for example can enumerate borates such as sodium tetraborate (borax), potassium tetraborate, tetraboric acid ammonium, vitriol such as sodium sulfate, vitriolate of tartar, ammonium sulfate, silicate such as water glass, potassium silicate, nitrate such as SODIUMNITRATE, saltpetre, wherein best with borax, potassium tetraborate and sodium sulfate.As water-soluble inorganic salt, above-mentioned inorganic salt can be used alone or be used in combination more than 2 kinds.
(B) solid lubricant, be evenly dispersed in the hydrographic lubricant of the present invention, when being coated in this hydrographic lubricant on the work material, adhere to, as main component, help to prevent to produce the hot glue of biting and in the tunicle that constitutes by water-soluble inorganic salt that when heat drying makes transpiring moisture, produces.Such solid lubricant, to add man-hour normally used solid lubricant just passable so long as carry out the cold plasticity of metallic substance, have no particular limits, for example can enumerate metallic soap, mica, calcium cpd, metallic sulfide, nitride, metal oxide, polymeric solid etc.Metallic soap is the salt of lipid acid and metal.Can enumerate lauric acid, tetradecanoic acid, palmitinic acid, stearic acid, docosoic, oxystearic acid etc. as lipid acid, wherein best with stearic acid.Can enumerate calcium, aluminium, magnesium, barium, zinc, lead, lithium, potassium etc. as metal.As such metallic soap, calcium stearate is best.Can enumerate sericite, white mica, synthetic mica etc. as mica.Can enumerate calcium hydroxide, lime carbonate etc. as calcium cpd.Can enumerate molybdenumdisulphide, tungsten disulfide, Selenium Sulfide etc. as metallic sulfide.Can enumerate boron nitride etc. as nitride.Can enumerate titanium oxide, zinc oxide, silicon-dioxide etc. as metal oxide.Can enumerate PTFE, nylon, polyethylene etc. as polymeric solid.In addition, can enumerate graphite, talcum, metal etc.As these solid lubricants, use pulverous solid lubricant usually.Among them, below contain metallic soaps such as the time becoming the good calcium stearate of the material of obstacle and oilness in annealing and mica is good.As solid lubricant, can use separately as above-mentioned solid lubricant, perhaps be used in combination more than 2 kinds.
(C) at least a oil component of from mineral oil, animal-plant oil and synthetic oil, selecting, be to form oil film on the dry coationg of forming by water-soluble inorganic salt that is used for after applying hydrographic lubricant of the present invention on the metallic substance, obtains, and be to be used to remedy because of producing the irregular oilness that makes heat-resisting deadlocked property reduction part of adhering to of solid lubricant in drying.
The oil component that uses among the present invention, the scope that its flash-point, fusing point and viscosity are preferably specific.That is, flash-point is advisable at 150-300 ℃.For the cold plasticity processing of forcing the worker, the medial temperature of the metallic substance after the processing reaches more than 150 ℃ sometimes, if the flash-point of oil component below 150 ℃, produces a large amount of gas after the processing, the danger of catching fire is arranged.When flash-point surpasses 300 ℃, common viscosity height, the fusing point height, also inadvisable.Fusing point is advisable at-20~20 ℃.When fusing point surpasses 20 ℃, the emulsifying property of the oil in the hydrographic lubricant, reemulsification reduction, the stability of treatment solution often descends.Fusing point generally has the tendency that flash-point reduces at the oil component below-20 ℃.In addition, the viscosity of oil component under 40 ℃ is advisable at 5-100cSt.Viscosity is when 5cSt is following, and flash-point reduces usually, and the processing back produces a large amount of gas, and the danger of catching fire is arranged, and because the interparticle slip of solid lubrication reduces the tendency that has oilness to reduce.On the other hand, when viscosity surpassed 100cSt, the dispersiveness of the oil in the hydrographic lubricant, redispersibility reduced, and the tendency of the stability that reduces hydrographic lubricant is arranged.
As mineral oil, for example can enumerate machine oil, turbine oil, spindle wet goods, as animal-plant oil, for example can enumerate plam oil, rape seed oil, Oleum Cocois, Viscotrol C, tallow, lard, whale oil, fish oil etc., as synthetic oil, for example can enumerate ester oil (for example, the ester of lipid acid such as polyvalent alcohol such as ethylene glycol, trihydroxymethyl propane and stearic acid, oleic acid), silicone oil (for example, polydimethylsiloxane, poly-diphenyl siloxane) etc.
The oil component that uses among the present invention is the independent a kind of or combination more than 2 kinds of aforesaid mineral oil, animal-plant oil or synthetic oil, but preferably satisfies above-mentioned flash-point, fusing point and range of viscosities as oil component.
In addition, secondary effect as oil component, can enumerate following effect, promptly, in the occasion of coating hydrographic lubricant of the present invention on metallic substance down of heating, usually before coating, heat hydrographic lubricant with steam heating tube, this moment is because the existence of oil component can prevent that solid lubricant from adhering on heating tube.
(D) tensio-active agent is to be used for making the emulsification equably in water of above-mentioned oil component at hydrographic lubricant of the present invention, simultaneously, solid lubricant is evenly dispersed in the water.As tensio-active agent, can use in nonionogenic tenside, anion surfactant, amphoterics and the cats product any.As nonionogenic tenside, have no particular limits, for example can enumerate the polyxyethylated ester that constitutes by Voranol EP 2001, polyoxyethylene alkyl phenyl ether, polyoxyethylene glycol and higher fatty acid (for example carbonatoms 12-18), the polyoxyethylene sorbitol acid anhydride alkyl ester that constitutes by sorbitan and polyoxyethylene glycol (perhaps oxyethane) and higher fatty acid (for example carbonatoms 12-18) etc.As anion surfactant, be not particularly limited, for example can enumerate soap, sulfuric acid ester salt, sulfonate, phosphate ester salt, phosphorodithioate salt etc.As amphoterics, have no particular limits, for example can enumerate carboxylate salt, sulfuric acid, sulfonate, phosphate ester salt of amino acid pattern and betaine type etc.As cats product, have no particular limits, for example can enumerate lipid acid amine salt, quaternary ammonium salt etc.These tensio-active agents can use separately, perhaps are used in combination more than 2 kinds.
(E) water is the dispersion medium as solid lubricant, and the medium when using tensio-active agent to make the oil component uniformly emulsify also in addition is in addition as the solvent of water-soluble inorganic salt.
Hydrographic lubricant of the present invention, except that above-mentioned necessary composition, also can contain oiliness rising agents such as the lipid acid that contains in hydrographic lubricant in the processing of common metal cold plasticity, higher alcohols, the lubricating oil additives of anti-extreme pressure the such as chlorine system, sulphur system, defoamer, sanitas etc.In hydrographic lubricant of the present invention,, can also contain the colloidal titanium compound in order to improve oilness, rust-preventing characteristic.As the colloidal titanium compound, for example can enumerate with the compound of the compound of neutralisation of sulphuric acid such as sodium hydroxide and titanium or phosphoric acid and titanium and the gonorrhoea liquid that obtains.
In hydrographic lubricant of the present invention, the weight ratio of solid lubricant and water-soluble inorganic salt (B/A) must be 0.05/1-2/1, better is 0.1/1-1.5/1, preferably 0.3/1-1.5/1.Specifically, conditions such as the shape of the metallic substance of plastic working, processing conditions, processing unit (plant) are set as required.This weight ratio is 0.05/1 when following, and the oilness of resulting tunicle reduces, and bites on metallic substance with hot glue and.In addition, this weight ratio surpasses at 2/1 o'clock, and the tack of gained tunicle and matrix and the hardness of tunicle reduce, the dried tunicle that forms on the metal material surface easy precipitation when import tool enters the mouth, and oilness reduces.
In addition, with respect to the total amount of water-soluble inorganic salt and solid lubricant, the weight ratio of oil component (C/ (A+B)) must be 0.05/1-1/1, preferably 0.1/1-0.8/1.If this weight ratio is 0.05/1 when following, oil component is exuded to the tunicle surface when drying effect reduces, and significantly damages the oil component that oozes out and remedies the main effect that solid lubricant adheres to this hydrographic lubricant of the present invention of oilness of irregular, heat-resisting deadlocked property reduction part.This weight ratio is if surpass at 1/1 o'clock, and oil content oozes out unquestionable on the tunicle surface, but the gained tunicle can not form hard solid tunicle, so the lubricant import volume reduces oilness decline.
(D) composition in the hydrographic lubricant of the present invention is the usage quantity of tensio-active agent, make oil component uniformly emulsify in water as long as can reach, get final product more than making the minimum quantity of solid lubricant homodisperse effect in water simultaneously, be not particularly limited, but when consumption is too much, be easy to generate bubble, and uneconomical, be advisable with the 0.2-5% in the hydrographic lubricant (weight) concentration usually.
For the solid shape branch in the hydrographic lubricant of the present invention [be A+B+C+D+ arbitrarily admittedly shape branch (=above-mentioned oiliness rising agent etc. are the solid shape branch of added ingredients arbitrarily)] concentration, be not particularly limited, when modulation, circulation, preservation, be advisable, be advisable with 5-45% (weight) in use with 20-45% (weight).
Manufacture method for hydrographic lubricant of the present invention, also be not particularly limited, as long as it is just passable that the hydrographic lubricant of making satisfies above-mentioned condition, normally make by following process, that is, after (A) water-soluble inorganic salt is dissolved in the water, make again in the homodisperse liquid of (B) solid lubricant, add the liquid that makes (C) oil component uniformly emulsify in water with (D) tensio-active agent, stir, make solid lubricant homodisperse, oil component uniformly emulsify in this system.In the emulsification of the dispersion of carrying out solid lubricant, oil component with when finally stirring, even in order to obtain, fine emulsive dispersion liquid preferably uses high speed agitator to carry out strong mixing.
Hydrographic lubricant of the present invention, according to the kind of metallic substance, the kind of cold plasticity processing, the degree of finish of metallic substance, can dilute with water during use.The hydrographic lubricant that dilution obtains is also included within the scope of the present invention.
The lubricant that hydrographic lubricant of the present invention uses in the time of can being used as materials such as the tubing that is made of metals such as iron and steel, titanium or titanium alloy, copper or copper alloy, aluminum or aluminum alloy, wire rod, bar are carried out cold plasticity processing (tube drawing, wire drawing, forging etc.), the lubricant that uses when particularly being used as the drawing steel pipe.
Before coating hydrographic lubricant of the present invention, in order to obtain good result, preferably the metallic substance that will process is carried out degreasing (using common alkali cleaner), washing, pickling successively (in order to remove the oxide skin of metallic substance, improve the tack of tunicle, use hydrochloric acid etc. to carry out), the pre-treatment of water-based.In the occasion that does not have oxide skin to adhere to, do not need pickling, washing.These pre-treatments can be carried out according to a conventional method.
Utilize methods such as dipping, flow coat on the metallic substance that will process, to apply hydrographic lubricant of the present invention.The temperature of the hydrographic lubricant during coating is not particularly limited, and generally is normal temperature-90 ℃, and the time during dipping also is not particularly limited, and the temperature that generally proceeds to metallic substance is identical with the liquid temperature, for example 5-10 minute.Carry out mangle after the coating, carry out drying with drying oven etc. then, do not do special restriction, but, form dry coationg usually at 60-150 ℃ of dry coating.
The optimum thickness of dry coationg, different with the processing form of metallic substance, degree of finish, surfaceness etc., generally be 1-50gm 2, 5-40g/m preferably 2The thickness of dry coationg is crossed when thin, and instrument is strong with contacting of metallic substance, causes that easily hot glue, and when blocked up, the major part of dry coationg can not enter machined surface and be excluded, so the loss of hydrographic lubricant increase.
The plastic working of the metallic substance in the time of can utilizing the method for common enforcement to use hydrographic lubricant of the present invention.
Use the occasion of hydrographic lubricant of the present invention when carrying out the plastic working of metallic substance, peeling off of the residual tunicle after the plastic working is easy.
In the occasion of utilizing plastic working to form, usually adopt and repeat swabbing and plastic working, the making method of manufacturing purpose article shape progressively, if this moment, the metallic substance of work hardening was directly delivered to next step plastic working operation, machining load will increase, even can not be shaped, therefore to anneal, so that metallic substance is softening.If when annealing remaining tunicle because the one-tenth branch in the slipping agent causes the carburizing, sulfurizing, phosphatizing of metallic substance etc., can damage original solidity to corrosion of metallic substance and physical strength, this situation is disadvantageous.In addition, be lubricated once more after plastic working when handling, if residual lubricated tunicle before having, then the tack of the new tunicle that forms is inferior, also is disadvantageous.
Therefore, usually after plastic working, remove residual tunicle, in the past with the lubricating system that chemical tunicle is handled and response type soap treatment combination forms in, the removal of residual tunicle needs alkali degreasing to handle and pickling (chlorohydric acid pickling and sulfuric acid washing) processing at least.In contrast, in the occasion of using hydrographic lubricant of the present invention, only just can remove residual tunicle usually with alkali cleaner.As such alkali cleaner, can use normally used product, the grease-removing agent that for example contains sodium phosphate, water glass, tensio-active agent etc. specifically, for example can use the Off ア イ Application Network リ-Na-4360 of Japanese パ-カ ラ イ ジ Application グ (strain) manufacturing etc.
The mechanism of action of hydrographic lubricant of the present invention is still not fully aware of, it is believed that, coating hydrographic lubricant of the present invention is when heat drying forms dry coationg then on metallic substance, oil component becomes the peripheral portion that emulsion is exuded to tunicle, and the oil component that oozes out has remedied the oilness that dry coationg adheres to less part.That is,, in drying process, be exuded to the peripheral portion of tunicle, thereby lower the friction of instrument such as drawing-die, plug, drift and work material, lower hot glue significantly and phenomenon owing to contain the composition of lubricated auxiliary substance as hydrographic lubricant.
In addition, the reason of peeling off easily of the residual tunicle after the cold plasticity processing is still not fully aware of, it is believed that, peels off the tunicle of being made up of water-soluble inorganic salt easily with alkali cleaner, therefore is removed together attached to solid lubricant on this tunicle and oil component yet.
Specifically describe hydrographic lubricant of the present invention by the following examples.
Embodiment 1-16
The modulation of hydrographic lubricant, coating and steel pipe drawing test
Press the composition modulation lubricant shown in the table 1.Modulation is behind the dissolving water-soluble inorganic salt, to make the solid lubricant homodisperse in water, adds the liquid that makes the oil component uniformly emulsify with tensio-active agent in gained liquid, stirs, and makes solid lubricant homodisperse in this system, the oil component uniformly emulsify.Use high speed agitator to carry out above-mentioned dispersion, emulsification.
The raw material that uses during the modulation hydrographic lubricant, water-soluble inorganic salt all is 1 grade of a reagent, the aqueous dispersions that the aqueous dispersions that calcium stearate uses 30% solid shape to divide, PTFE use 60% solid shape to divide, it is 46mm that machine oil uses 40 ℃ viscosity 2The machine oil of/s, it is 28mm that plam oil uses 50 ℃ viscosity 2The refining plam oil of/s, it is 64mm that ester oil uses 50 ℃ viscosity 2The condensation ester of trihydroxymethyl propane/s, poly-and lauric acid, oleic dipolymer.In addition, tensio-active agent uses Voranol EP 2001, and addition is 1% (weight) of lubricant total amount.
Then, the hydrographic lubricant that is modulated into is coated on carbon steel pipes or the stainless-steel pipe, dry then, resulting steel pipe with dry coationg is carried out pull-out test, according to the performance of the demoulding evaluation lubricant of the damage situation occurred of the internal surface of pipe and outside surface and the residual tunicle after the processing.
As for drawable material,, use the SUS304 material of external diameter 25.0mm, wall thickness 2.5mm for stainless-steel pipe for the STKM13A material of carbon steel pipes use external diameter 25.4mm, wall thickness 3.0mm.
Before the coating hydrographic lubricant, these steel pipes are carried out following pretreatment procedure.Carbon steel pipes is carried out the operation of (1)-(4) successively, and stainless-steel pipe carries out the operation of (1) and (2) successively.
(1) degreasing alkali cleaner: Off ア イ Application Network リ-Na-4360 that Japanese パ-カ ラ イ ジ Application グ (strain) makes, concentration: 20g/L, temperature: 60 ℃, dipping time: 10 minutes.
(2) washing is flooded in the tap water of normal temperature
(3) pickling industrial hydrochloric acid, concentration: 17.5% (weight), temperature: normal temperature, dipping time: 10 minutes
(4) washing is flooded in the tap water of normal temperature
Make the treatment solution temperature reach 50 ℃, utilize dipping to carry out the coating of hydrographic lubricant.Drying after the processing is to put into the loft drier of tunnel like with handling material, uses with the well heater of kerosene as thermal source, carries out 1 hour 100-120 ℃ temperature.
Pull-out test uses 10 tons of cold drawing bench of chain type, uses the drawing-die [the ダ イ ス of Fuji (strain) makes superhard drawing-die (KD type)] and the plug [the ダ イ ス of Fuji (strain) makes superhard plug (MB type)] that are made of sintered carbide tools, carries out with drawing speed 17m/min.The reduction of area of STKM13A material (=relative reduction in area) reaches 46% (external diameter after the drawing is that 20mm, wall thickness are 2mm), and the reduction of area of SUS304 material is 43% (external diameter after the drawing is that 20mm, wall thickness are 1.75mm).If the basal area before the processing is A 0, the basal area after the processing is A 1, reduction of area is represented with following formula:
Reduction of area (%)=(A 0-A 1)/A 0* 100
The damage situation occurred of the internal surface of visual observation steel pipe and outside surface is estimated by 4 grades that represent below.
◎: have no damage and take place, do not see accurately machined irregular
Zero: damage does not take place, but sees accurately machined irregular
△: see having slight damage to take place
*: see that obvious impairment takes place
In above-mentioned evaluation, so-called damage is meant that the hot glue on the swash of seeing on the internal surface of pipe or the outside surface wound, so-called accurately machined irregular surperficial gloss imparting part and the matt partially mixed existence that is meant after drawing over to one's side, the different state of demonstration gloss.
Use alkali cleaner (Off ア イ Application Network リ-Na-4360 that Japanese パ-カ ラ イ ジ Application グ (strain) makes, concentration 20g/L) removability test (60 ℃ of temperature) of the residual tunicle after processing, by the steel pipe behind the visual observation alkali degreasing, estimate by following 4 grades.
◎: flooded 5 minutes, and failed to confirm that tunicle was remaining
Zero: flooded 10 minutes, and failed to confirm that tunicle was remaining
△: flooded 10 minutes, tunicle is still remaining
*: flooded 10 minutes, tunicle is still remaining
The results are shown in the table 1 of pull-out test.
Comparative example 1-10
Except that according to the composition shown in the table 2, to operate equally with embodiment 1-16, the modulation hydrographic lubricant is similarly tested with embodiment 1-16.
The result also is shown in Table 2.Beyond scope of the present invention, the outside surface of steel pipe and internal surface all damage behind all pull-out tests, and perhaps the alkali degreasing of the residual tunicle after the processing has problem.
Comparative example 11 and 12
Will with the steel pipe of the same race that uses among the embodiment 1-16 table 2 shown in carry out chemical surface control and response type soap swabbing under the condition.The swabbing steel pipe that obtains is carried out the pull-out test identical with example 1-16.
The results are shown in the table 2.Though it is irregular that damage and precision work do not take place, the demoulding deterioration of the remaining tunicle after the drawing processing.
Embodiment 17-19
The modulation of hydrographic lubricant, coating and forging test
Except that according to the composition shown in the table 3, operate equally with embodiment 1-16, the modulation hydrographic lubricant, the hydrographic lubricant that obtains is coated on the carbon steel, dry then, resulting carbon steel with dry coationg is carried out reverse drift test, estimate the performance of hydrographic lubricant according to the good punching degree of depth.
The material that carries out reverse drift test is commercially available carbon steel S45C normalizing material (hardness: about Hv180), being shaped as of test piece, diameter phi 30mm, height 16-40mm, with 2mm interval variation (13 level).
By dipping, be to apply hydrographic lubricant under 80 ℃ the condition in the hydrographic lubricant temperature.The drying of coating liquid is used the heated air circulation type drying oven, was carried out 1 hour at 90-100 ℃.
Oppositely drift test is used 200 tons of crank type press, from be placed on the mould, the top of the circular test film of restriction peripheral part carries out punching, obtains cup-shaped shaping thing.Adjust the not dead point of punch press, make the lower tape of test piece bottom reach certain 10mm, according to the test piece height, the surface of processing part is enlarged than improving such (forming darker hole) set, according in the performance that does not cause hole depth (the good punching degree of depth) the evaluation hydrographic lubricant that processes under the situation that hot glue.
Mould: material SKD11, the diameter 30.4mm of test film insertion portion.
Drift: material SKH53, flat edge boss diameter 21.2mm.
Reduction of area: 50%
Process velocity: 30 strokes/minute
Oppositely drift test is illustrated in Fig. 1.
The results are shown in the table 3 of reaction drift test.
Table 1 embodiment and evaluation result thereof
Figure A9711713600131
Table 2 comparative example and assessment result thereof
Figure A9711713600141
The embodiment of table 3 forging test and evaluation result thereof
The effect of invention
Use hydrographic lubricant of the present invention, in the cold moulding processing of metal material, just can reach with 1 operation Arrive and chemical tunicle in the past/equal lubricity of response type soap processing, simultaneously, can greatly improve the operation ring The problems such as border, treatment fluid management, discarded object. Use hydrographic lubricant of the present invention to carry out the cold moulding of metal material The property add man-hour, it is easier that the removal of the residual tunicle after the processing is processed than chemical tunicle/response type soap.
The simple declaration of accompanying drawing
Fig. 1 is to use the synoptic diagram of the reverse drift test of carbon steel that hydrographic lubricant carries out.

Claims (4)

1, the aqueous lubricant for cold working of metallic substance is characterized in that, is made up of following ingredients:
(A) water-soluble inorganic salt;
(B) solid lubricant;
(C) be selected from least a oil component in mineral oil, animal-plant oil and the synthetic oil;
(D) tensio-active agent;
(E) water; The weight ratio of solid lubricant and water-soluble inorganic salt (B/A) is 0.05/1-21, total amount with respect to water-soluble inorganic salt and solid lubricant, the weight ratio of oil component (C/ (A+B)) is 0.05/1-1/1, and solid lubricant and oil component be homodisperse and emulsification separately.
2, the aqueous lubricant for cold working of the described metallic substance of claim 1, wherein, water-soluble inorganic salt is to be selected from least a in borax, potassium tetraborate and the sodium sulfate.
3, the aqueous lubricant for cold working of the described metallic substance of claim 1, wherein, solid lubricant is to be selected from least a in metallic soap and the mica.
4, the aqueous lubricant for cold working of the described metallic substance of claim 1, wherein, with respect to the total amount of water-soluble inorganic salt and solid lubricant, the weight ratio of oil component (C/ (A+B)) is 0.1/1-0.8/1.
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JP3517522B2 (en) 2004-04-12
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