WO2014184838A1 - 無端金属リングの製造方法、及び無端金属リング樹脂除去装置 - Google Patents
無端金属リングの製造方法、及び無端金属リング樹脂除去装置 Download PDFInfo
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- WO2014184838A1 WO2014184838A1 PCT/JP2013/063260 JP2013063260W WO2014184838A1 WO 2014184838 A1 WO2014184838 A1 WO 2014184838A1 JP 2013063260 W JP2013063260 W JP 2013063260W WO 2014184838 A1 WO2014184838 A1 WO 2014184838A1
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- WIPO (PCT)
- Prior art keywords
- endless metal
- metal ring
- resin
- cleaning
- ring
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0269—Cleaning
- B21B45/0275—Cleaning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
- B08B3/123—Cleaning travelling work, e.g. webs, articles on a conveyor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/72—Temporary coatings or embedding materials applied before or during heat treatment during chemical change of surfaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/06—Cleaning involving contact with liquid using perforated drums in which the article or material is placed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/14—Making other particular articles belts, e.g. machine-gun belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
Definitions
- the present invention relates to a method for manufacturing an endless metal ring that forms a laminated ring assembled to a CVT belt, and relates to a technique for suppressing the occurrence of nitriding defects that occur in the manufacture of an endless metal ring by devising a cleaning process and a cleaning method.
- CVT continuously variable transmissions
- CVT has such a structure
- endless metal belts and elements used in CVT require high dimensional accuracy. Since the output of the engine is transmitted to the endless metal belt and element, the endless metal belt and element are repeatedly subjected to a corresponding load when the engine is operating. From the viewpoint of strength and life, it has been avoided to mount the CVT on a vehicle having a high output engine.
- Patent Document 1 discloses a technique related to a CVT belt hoop and a manufacturing method thereof.
- a hoop endless metal ring
- barrel polishing is performed using a medium in which abrasive grains having an average particle diameter of 100 ⁇ m are mixed and hardened, and the abrasive grains are oxide-based.
- the bulk specific gravity is set to 2.0 or less, or using carbide-based abrasive grains and setting the bulk specific gravity of the media to 1.6 or less, the size of foreign matter driven into the hoop can be limited.
- Patent Document 2 discloses a technique related to a manufacturing apparatus and a manufacturing method for an endless metal ring used in a continuously variable transmission.
- the endless metal ring polishing apparatus includes an end surface polishing apparatus and an inner and outer peripheral surface polishing apparatus.
- the inner and outer peripheral surface polishing apparatus includes a ring rotating roller that rotates the endless metal ring, an outer peripheral surface polishing roller that contacts the outer peripheral surface of the endless metal ring, and an inner peripheral surface polishing roller that contacts the inner peripheral surface of the endless metal ring.
- a constant pressure feed actuator that variably moves the clearance and surface pressure between the outer peripheral surface polishing roller and the inner peripheral backup roller and the clearance and surface pressure between the inner peripheral surface polishing roller and the outer peripheral backup roller.
- Patent Document 3 discloses a technique related to a method for manufacturing a steel belt.
- a multi-process deep drawing process that performs deep drawing more than once and a member processed in the multi-processing deep drawing process are cut into a belt shape along the circumference. This makes it possible to manufacture a high-strength steel belt without performing a welding operation.
- any of Patent Documents 1 to 3 requires a cutting step, and it is necessary to cut the endless metal ring into a predetermined width from a member formed in a cylindrical shape. At this time, no matter what cutting method is used, burrs or the like are generated, and a step for removing the burrs is required.
- the technique as shown in Patent Document 2 it is necessary to process the endless metal rings one by one, and there is a possibility that a cost problem may arise in that processing time is required. Therefore, the applicant has adopted the removal of burrs from the endless metal ring by barrel polishing shown in Patent Document 1 and Patent Document 3.
- an object of the present invention is to provide an endless metal ring manufacturing method and an endless metal ring resin removing device that can reduce the nitriding failure rate of the endless metal ring in order to solve such problems.
- an endless metal ring manufacturing method has the following characteristics.
- a barrel polishing step for polishing an endless metal ring using a barrel made of resin, a rolling step for rolling the washed endless metal ring, and a nitriding treatment for nitriding the rolled endless metal ring In the manufacturing method of an endless metal ring for manufacturing the endless metal ring through a step, a resin removing step of removing the resin attached to the endless metal ring is provided.
- the nitriding failure rate of the endless metal ring can be reduced.
- the applicant investigated various cleaning conditions for the endless metal ring in the nitriding treatment of the endless metal ring. As a result of the investigation, it was found that there was a problem in removing the media used for barrel polishing. Specifically, although the resin material and abrasive are mixed in the media, the applicant has investigated the fact that nitriding with the resin material remaining on the metal surface leads to defective nitriding. confirmed. The resin adhering to the metal surface inhibits nitrogen molecules from entering the metal from the metal surface in the nitriding process, and as a result, the thickness of the nitrogen diffusion layer is reduced, and a portion having low surface strength is formed in spots. . This becomes a nitriding defect and leads to a product defect. Therefore, it is possible to reduce the nitriding failure of the endless metal ring by removing such resin deposits.
- the resin removing step is provided after the barrel polishing step and before the rolling step.
- the resin deposits adhering to the surface of the endless metal ring are more effective in reducing nitriding defects of the endless belonging ring by removing it before the rolling process. If the resin adheres to the surface of the endless metal ring before the rolling process, the resin adheres to the surface of the endless metal ring during the rolling process, and the resin is peeled off even after the endless metal ring surface is carefully washed after rolling. Is extremely difficult. For this reason, by removing the resin before the rolling process, it is possible to prevent the resin from sticking to the surface of the endless metal ring, and as a result, prevent nitriding failure.
- the resin removal step is a step of removing the resin by immersing the endless metal ring in a decomposition treatment liquid. Is preferred.
- the resin adhering to the endless metal ring surface can be melted and removed using the decomposition treatment liquid, and then the rolling process is performed, so that the resin adheres to the endless metal ring surface. As a result, it is possible to prevent nitriding defects.
- the resin removal step is a step of removing the resin by causing a fluid to collide with a surface of the endless metal ring.
- the resin removal step is a step of removing the resin by causing a fluid to collide with a surface of the endless metal ring.
- the resin is removed by, for example, washing with a large flow rate and causing the fluid to collide with the surface of the endless metal ring, and then the rolling process is performed, so that the resin adheres to the endless metal ring surface.
- the resin is removed by, for example, washing with a large flow rate and causing the fluid to collide with the surface of the endless metal ring, and then the rolling process is performed, so that the resin adheres to the endless metal ring surface.
- the resin removing step is preferably a step of immersing the endless metal ring in a liquid and performing ultrasonic cleaning.
- the resin adhering to the surface of the endless metal ring is removed by ultrasonic cleaning, and then a rolling process is performed, so that the resin is prevented from adhering to the surface of the endless metal ring, resulting in nitriding Defects can be prevented.
- the resin removal step is a step of performing cleaning while rotating the endless metal ring.
- the endless metal ring is rotated when performing ultrasonic cleaning. Therefore, the position of the ultrasonic wave hitting the endless metal ring surface is changed, and the position of cavitation generated on the endless metal ring surface is displaced. be able to. As a result, it becomes possible to promote the peeling of the resin from the surface of the endless metal ring. By doing so, it is possible to prevent the resin from adhering to the surface of the endless metal ring, and as a result, it is possible to prevent nitriding defects.
- an endless metal ring resin removing apparatus has the following characteristics.
- an endless metal ring cleaning apparatus that holds the endless metal ring and cleans the endless metal ring, a holding jig that holds the endless metal ring, and a periphery of the endless metal ring by the holding jig
- a rotating mechanism for rotating the endless metal ring a cleaning tank filled with a liquid for ultrasonic cleaning of the endless metal ring; and an ultrasonic generator for performing the ultrasonic cleaning.
- the ultrasonic cleaning device is operated while rotating the endless metal ring in the circumferential direction by the rotating mechanism, so that the surface of the endless metal ring is It is preferable to remove the adhered resin.
- FIG. 1 shows a perspective view of the CVT ring 100 of the first embodiment.
- FIG. 2 shows an exploded perspective view of the CVT ring 100.
- the CVT ring 100 includes a laminated ring 104 and a plurality of elements 102 that are stacked in the thickness direction.
- the laminated ring 104 is formed by stacking nine layers of endless metal rings 110, and the circumferential length is different for each layer. In FIG. 2, it is omitted for explanation, and only three layers are shown.
- Adjacent endless metal rings 110 are designed so that their inner diameters differ by the thickness of endless metal ring 110. Therefore, the stacked endless metal rings 110 are stacked without a gap.
- the element 102 is made of a flat metal material as shown in FIG. 2, and groove portions 116 are provided at both ends thereof, and the laminated ring 104 is inserted into the groove portions 116.
- FIG. 3 is a schematic diagram for explaining the manufacturing process of the endless metal ring 110.
- A is a strip cutting process pr1,
- (b) is a strip welding process pr2,
- (c) is a solution treatment 1 treatment process pr3,
- (d) is a cylindrical body cutting process pr4, and
- (e) is a barrel polishing process pr5.
- F is a resin removal step pr6,
- (g) is a rolling step pr7
- (h) is a solution treatment 2 treatment step pr8,
- i) is a circumference adjustment step pr9,
- j) is an aging / nitriding treatment step pr10,
- K shows the stacking step pr11.
- the strip P2 is cut out from the material roll P1 to a fixed length in the strip cutting process pr1.
- a high-strength steel such as maraging steel is used for the material roll P1, and this is uncoiled to remove the wrinkles, and then cut into a predetermined width to form a strip P2.
- the width of the strip P2 is determined in consideration of performing the rolling process pr7 and the like later.
- the cylindrical surface C1 is formed by butt-welding the end surface of the cylindrical body C1 formed by roll-bending the strip P2. .
- the solution treatment 1 treatment step pr3 shown in FIG. 3C the solution treatment of the cylindrical body C1 is performed in a nitrogen atmosphere. By this solution treatment, the structure anisotropy of the joint is relaxed.
- the cylindrical body cutting step pr4 shown in FIG. 3 (d) the cylindrical body C1 is cut into a ring with a predetermined width, and a material ring C2 is formed.
- the deburring generated on the end surface of the material ring C2 is performed in the barrel polishing step pr5 shown in FIG.
- What is used in the barrel polishing process pr5 is a resin medium obtained by mixing alumina abrasive grains having a predetermined particle diameter with a resin-based binder.
- the material ring C2 after the barrel polishing is washed in a resin removing process pr6 shown in FIG.
- This resin removing step pr6 will be described later.
- the thickness of the material ring C2 is adjusted in the rolling process pr7 shown in FIG.
- the thickness of the material roll P1 is made as uniform as possible, deviation in the width direction, thickness variation and fine deformation in the strip welding process pr2 and the cylindrical body cutting process pr4, barrel polishing process
- the purpose is to correct the influence of pr5 by rolling the material ring C2 using the rolling roller R1.
- the post-rolling ring C3 formed here is set on the assumption that the plate thickness is increased in the subsequent peripheral length adjusting step pr9.
- FIG. 3 (h) heat treatment is performed in the furnace at a predetermined temperature for a predetermined time.
- the material is made uniform by solution treatment.
- the circumferential length adjusting step pr9 shown in FIG. 3 (i) an endless metal ring 110 is formed by adjusting the circumferential length of the ring C3 after rolling to a necessary length.
- the nitriding treatment is performed in the aging / nitriding treatment process pr10 shown in FIG.
- FIG. 4 is a schematic diagram showing the nitriding mechanism.
- (A) shows an ammonia gas filling process
- (b) shows a nitrogen adsorption process
- (c) shows an ammonia decomposition process
- (d) shows a nitrogen intrusion process
- (e) shows a nitrogen diffusion process.
- the endless metal ring 110 placed in a decompressed furnace (not shown) is placed in an ammonia gas atmosphere in the “ammonia gas filling process” of FIG.
- the endless metal ring 110 formed in this way is laminated in a lamination process pr11 as shown in FIG. 3 (k).
- nine layers of endless metal rings 110 are stacked to form a stacked ring 104.
- a combination CVT ring 100 is formed with the element 102 as shown in FIG.
- FIG. 5 shows a schematic diagram of the cleaning apparatus 10.
- FIG. 6 is a perspective view of the cleaning jig 20.
- the cleaning device 10 used in the resin removal process pr6 holds a cleaning jig 20 shown in FIG. 6 in a cleaning tank 40 filled with cleaning water so as to be rotatable, and an ultrasonic generator below it. 30 is arranged.
- the cleaning jig 20 is configured to hold the material ring C ⁇ b> 2 with a thin wire-shaped ridge as shown in FIG. 6, and is fixed to the cleaning device 10 with a cover (not shown).
- the cleaning jig 20 provided in the cleaning device 10 is provided with a rotation mechanism (not shown) so as to rotate about the axis of the material ring C2.
- the ultrasonic generator 30 is disposed so as to generate ultrasonic waves from the lower portion of the cleaning jig 20. In this way, the material ring C2 after the barrel polishing process pr5 is cleaned.
- the manufacturing method of the endless metal ring 110 includes a barrel polishing step pr5 for polishing a material ring C2 (endless metal ring 110) using a barrel made of resin, and a cleaned material ring C2 (endless metal).
- the endless metal ring 110 is manufactured through a rolling step pr7 for rolling the ring 110) and a nitriding step pr10 for nitriding the rolled post-rolling ring C3 (endless metal ring 110).
- a resin removing step pr6 for removing the resin adhering to the material ring C2 (endless metal ring 110) is provided after the barrel polishing step pr5 and before the rolling step pr7.
- the applicant investigates the surface of the endless metal ring 110 after the nitriding process pr10, and shades such as black spots and white spots are generated. It turned out to be lower than the part of. Normally, nitrogen is diffused from the surface layer of the endless metal ring 110 into the grain boundary by the “nitrogen diffusion process” shown in FIG. 4E to form the nitride layer r2. As a result, the surface of the endless metal ring 110 is cured. However, the shaded parts such as the black spots and white spots described above are low in hardness, and it is considered that defective nitriding has occurred. Such a poor surface hardness leads to a defective product of the endless metal ring 110 and has a problem of reducing the product yield. When the surface of the endless metal ring 110 is processed by shot peening as shown in FIG. 7G and FIG.
- FIG. 9 the schematic of 6 tank washing
- the endless metal ring 110 has been carefully cleaned through a cleaning process of 6 tanks after the barrel polishing process pr5.
- the endless metal ring 110 is cleaned by combining ultrasonic cleaning using pure water and rocking, the fifth layer is cleaned with pure water, and the sixth layer is endless metal.
- Spin drying was performed to blow off water droplets by rotating the ring 110 at a high speed.
- the endless metal ring 110 is cleaned using the cleaning apparatus 10 and the cleaning jig 20 as shown in FIGS. 5 and 6 as the resin removal process pr6 before the rolling process pr7. It was. As a result, it was confirmed that the resin can be removed satisfactorily.
- FIG. 7 is a schematic diagram showing a first model of nitriding failure occurrence prepared for explanation.
- A shows a state in which resin waste, rolling oil, compound, and the like are combined with dust in the process to be emulsified and adhered to the surface of the endless metal ring 110 due to poor cleaning.
- This emulsified substance b1 is considered to adhere to the surface of the endless metal ring 110 as a carbon-based polymer b2 in (b) indicating the timing of the solution treatment 1 treatment step pr3. And it becomes the carbonized substance b3 in an aging treatment (d).
- This carbonized material b3 prevents the generation of the iron oxide layer r1 formed on the surface of the endless metal ring 110 in the oxidation treatment (d).
- the endless metal ring 110 formed in this way has a problem that black spots and white spots become defective in nitriding and the surface hardness decreases. Furthermore, after that, when the shot peening process is performed before the stacking step pr11, it is not preferable because unevenness is partially generated as shown in (g).
- FIG. 8 is a schematic diagram showing a second model in which nitriding failure occurs.
- an oxide layer r3 such as titanium is formed on the surface of the endless metal ring 110 during the solution treatment (b), and this oxide film has an effect.
- the formation of the iron oxide layer r1 is hindered.
- the nitriding failure as shown in (e) occurs. Further, in the shot peening process as shown in FIG.
- FIG. 10 is a graph showing the results of a resin removal test using the cleaning apparatus of the first embodiment and changing the cleaning conditions.
- the cleaning apparatus 10 can be replaced with any one or all of the first to fourth tanks of the cleaning tank shown in FIG. 9, and the efficiency of resin removal varies depending on the cleaning conditions. Confirmed by resin removal test.
- the graph of FIG. 10 shows the partial correlation coefficient on the vertical axis and the test requirement on the horizontal axis. In this determination, after cleaning, ultrasonic cleaning is further performed with a carbon tetrachloride solution, the solution is filtered with a filter, and the amount of resin waste of the filter is evaluated to make a ranking.
- Ultrasonic force is an element indicating the influence of ultrasonic output w / L
- “work set jig” is an element indicating the influence of changing the shape, material, etc. of the jig.
- Fig. 11 shows a conventional jig.
- the jig 21 is made of resin and has a higher rigidity and a thicker frame than the cleaning jig 20.
- the jig 21 and the cleaning jig 20 can store the same number of endless metal rings 110.
- the “work setting jig” the jig 21 shown in FIG. 11 and the cleaning jig 20 shown in FIG. 6 were compared without a jig. It was found that the cleaning effect was highest when the cleaning was performed without a jig, and the cleaning effect was then lower in the order of the cleaning jig 20 and the jig 21. This is considered to mean that there is no thing blocking the ultrasonic wave and the cleaning effect is high.
- “Rotation” is an element indicating an effect when the cleaning jig 20 is rotated and not rotated. It was confirmed that the cleaning effect was higher by about 4 ranks in the case of cleaning by rotating compared to the case without rotation.
- “air blow” is an element indicating the influence of air blow on the surface of the endless metal ring 110 after ultrasonic cleaning. It was confirmed that the resin on the surface of the endless metal ring 110 could not be peeled even if air blowing was performed.
- the “number of work sets” is an element indicating the influence of changing the number of sets of endless metal rings 110 set on the cleaning jig 20. It was found that there was not much change due to the number of work sets.
- “Temperature” is an element indicating the influence of the temperature of the solution used when cleaning the endless metal ring 110. It was confirmed by changing the temperature of several patterns from room temperature, but it was found that the cleaning effect was enhanced when the temperature was increased to some extent.
- the “solution” is an element that indicates the influence of the type of solution filled in the cleaning tank 40 of the cleaning device 10. The solution is tested using pure water and hydrocarbon solvents. Compared to pure water, it was confirmed that the hydrocarbon-based solvent had almost no cleaning effect and a difference of about 5 ranks.
- the elements of “ultrasonic force”, “work setting jig”, “rotation”, “temperature”, and “solution” have a partial correlation function exceeding 0.4 and are effective. I can judge.
- the cleaning jig 20 shown in FIG. 6 is adopted as the work setting jig, and the cleaning jig 20 is rotated as shown in FIG. 4 to increase the ultrasonic force.
- the use of water for the solution further enhances the cleaning effect of resin debris. That is, the nitriding failure of the endless metal ring 110 is reduced by adjusting the cleaning device 10 so that the resin debris can be effectively removed from the surface of the endless metal ring 110.
- the nitriding failure rate of the endless metal ring 110 is about 40%, but this can be made substantially zero. As a result, the product cost of the endless metal ring 110 can be reduced.
- FIG. 15 is a table showing that the cleaning rank changes depending on the experimental conditions.
- the row indicated as “Comparative Example” shows the result of the 6-tank cleaning introduced in FIG. 9 in which the jig 21 shown in FIG. 11 was used and the jig 21 was washed without rotating.
- the process of the 5th tank and the 6th tank is abbreviate
- the cleaning jig 20 shown in FIG. 6 is used to rotate and clean, and the results up to the third tank are shown.
- the row labeled “Experiment 2” shows the results of using up to the fourth tank under the same conditions as “Experiment 1”.
- Example 3 shows the result of increasing the output of the ultrasonic generator 30 under the conditions of “Experiment 1”.
- Example 4 shows the result of increasing the output of the ultrasonic generator 30 under the conditions of “Experiment 2”. In all cases, the results of cleaning 100 material rings C2 with pure water are compared.
- the cleaning result rank of “Experiment 1” is 4, the cleaning result rank of “Experiment 2” is 2, the cleaning result rank of “Experiment 3” is 1, and the cleaning result rank of “Experiment 4” is 1. It can be seen that it is. If the cleaning result is rank 1, no nitriding failure of the endless metal ring 110 is confirmed. That is, according to the cleaning method of the endless metal ring 110 (material ring C2) of the first embodiment in which the output of the ultrasonic generator 30 is increased from 8 w / L to 24 w / L and rotated and cleaned using the cleaning jig 20.
- FIG. 12 shows a schematic plan view of the cleaning device of the second embodiment.
- FIG. 13 shows a schematic perspective view of the cleaning apparatus.
- a carbon tetrachloride solution is used for cleaning the endless metal ring 110 (material ring C2).
- the first tank 50 shown in FIG. 12 is filled with a carbon tetrachloride solution to clean the endless metal ring 110 (material ring C2).
- the material ring C2 may be held in the cleaning jig 20 and rotated as necessary.
- an ultrasonic generator 30 is also provided.
- the second cleaning tank 40 shown in FIG. 12 is filled with pure water and is ultrasonically cleaned by the ultrasonic generator 30 as in the first tank.
- the resin adhering to the surface of the endless metal ring 110 can be decomposed and removed by ultrasonic cleaning with the ultrasonic generator 30 while the material ring C2 is immersed in the decomposition and removal liquid.
- cleaning is a solution which can decompose and remove resin, it does not prevent using the decomposition removal liquid which can decompose and remove not only a carbon tetrachloride solution but another resin.
- FIG. 14 is a perspective view showing a cleaning image of the endless metal ring of the third embodiment.
- the surface of the endless metal ring 110 (material ring C2) is washed away by high-pressure cleaning.
- An inner surface cleaning nozzle 70 is provided inside the cleaning tank 40 of the cleaning apparatus 10, and an outer surface cleaning nozzle 71 is provided on the outer peripheral surface, and cleans the surface of the endless metal ring 110 with a pressure of at least several tens of MPa.
- the surface of the material ring C2 may be cleaned using a method of cleaning at a flow rate of several tens to several hundreds L / min by high flow rate cleaning.
- the ultrasonic generator 30 in the cleaning tank 40, and the material ring C2 is cleaned by cleaning the outer peripheral side and inner peripheral side surfaces of the endless metal ring 110 with a cleaning liquid such as pure water sprayed from the nozzle. It becomes possible to remove the resin adhering to the surface.
- the cleaning apparatus 10 and the cleaning method of the second embodiment or the third embodiment the same effect as the first embodiment can be obtained, and as a result, the nitriding failure of the endless metal ring 110 can be reduced. That is, it is possible to significantly reduce the nitriding failure of the endless metal ring 110 by providing the resin removal step pr6 for removing the resin debris that is considered to be attached to the surface of the endless metal ring 110.
- the invention has been described according to the present embodiment, the invention is not limited to the embodiment, and by appropriately changing a part of the configuration without departing from the spirit of the invention. It can also be implemented.
- the manufacturing procedure of the endless metal ring 110 is shown in FIG. 3, after the barrel polishing process pr5 performed after the cylindrical body cutting process pr4 of the cylindrical body C1, the solution treatment 2 treatment process is performed. If resin removal process pr6 is implemented before pr8, it will not prevent other processes from increasing or decreasing or being replaced. As described above, it is desirable that the resin removal step pr6 be performed before the rolling step pr7. However, even when the resin removal step pr6 is performed after the rolling step pr7, for example, a certain degree of resin removal effect can be expected.
- the shape of the CVT ring 100 is merely an example, and the present invention can be applied even when the shapes of the elements 102 of the number of the stacked rings 104 are different. Furthermore, it does not prevent the shape of the cleaning jig 20 from being changed. In this case, it is preferable to make the frame of the cleaning jig 20 thin and reduce the portion covering the material ring C2 as much as possible so as not to suppress the ultrasonic waves generated by the ultrasonic generator 30.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Description
20 洗浄用治具
21 治具
30 超音波発生装置
40 洗浄槽
100 CVTリング
102 エレメント
104 積層リング
110 無端金属リング
116 溝部
Claims (8)
- 樹脂を材料とするバレルを用いて無端金属リングを研磨するバレル研磨工程と、洗浄された前記無端金属リングを圧延する圧延工程と、圧延された前記無端金属リングを窒化処理する窒化処理工程を経て、前記無端金属リングを製造する無端金属リングの製造方法において、
前記無端金属リングに付着した前記樹脂を除去する樹脂除去工程を備えること、
を特徴とする無端金属リングの製造方法。 - 請求項1に記載の無端金属リングの製造方法において、
前記樹脂除去工程は、前記バレル研磨工程の後、前記圧延工程前に備えられていること、
を特徴とする無端金属リングの製造方法。 - 請求項1又は請求項2に記載の無端金属リングの製造方法において、
前記樹脂除去工程は、前記無端金属リングを分解処理液に浸すことで、前記樹脂を除去する工程であること、
を特徴とする無端金属リングの製造方法。 - 請求項1又は請求項2に記載の無端金属リングの製造方法において、
前記樹脂除去工程は、前記無端金属リングの表面に流体を衝突させることで、前記樹脂を除去する工程であること、
を特徴とする無端金属リングの製造方法。 - 請求項1又は請求項2に記載の無端金属リングの製造方法において、
前記樹脂除去工程は、前記無端金属リングを液体に浸し、超音波洗浄を行う工程であること、
を特徴とする無端金属リングの製造方法。 - 請求項5に記載の無端金属リングの製造方法において、
前記樹脂除去工程で、前記無端金属リングを回転させながら洗浄を行う工程であること、
を特徴とする無端金属リングの製造方法。 - 前記無端金属リングを保持して、前記無端金属リングの洗浄を行う無端金属リング樹脂除去装置において、
前記無端金属リングを保持する保持治具と、前記保持治具で前記無端金属リングの周方向に回転させる回転機構と、前記無端金属リングを超音波洗浄する為に液体を満たす洗浄槽と、前記超音波洗浄を行う超音波発生装置と、を備えること、
を特徴とする無端金属リング樹脂除去装置。 - 請求項7に記載の無端金属リング樹脂除去装置において、
前記回転機構によって前記無端金属リングを周方向に回転させながら前記超音波洗浄装置を作動させることで、前記無端金属リングの表面に付着した樹脂を除去すること、
を特徴とする無端金属リング樹脂除去装置。
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EP18173114.2A EP3388711B1 (en) | 2013-05-13 | 2013-05-13 | Endless metal ring manufacturing method |
US14/765,185 US20160059288A1 (en) | 2013-05-13 | 2013-05-13 | Endless metal ring manufacturing method and endless metal ring resin removal device |
RU2015134645A RU2627829C2 (ru) | 2013-05-13 | 2013-05-13 | Способ изготовления замкнутого металлического кольца и устройство для удаления полимеров с замкнутого металлического кольца |
KR1020157022245A KR101766566B1 (ko) | 2013-05-13 | 2013-05-13 | 무단부 금속 링의 제조 방법 및 무단부 금속 링 수지 제거 장치 |
CN201380074431.6A CN105190090B (zh) | 2013-05-13 | 2013-05-13 | 环形金属环的制造方法和环形金属环树脂除去装置 |
EP13884787.6A EP2998612B1 (en) | 2013-05-13 | 2013-05-13 | Endless metal ring manufacturing method and endless metal ring resin removal device |
JP2015516763A JP6237767B2 (ja) | 2013-05-13 | 2013-05-13 | 無端金属リングの製造方法、及び無端金属リング樹脂除去装置 |
PCT/JP2013/063260 WO2014184838A1 (ja) | 2013-05-13 | 2013-05-13 | 無端金属リングの製造方法、及び無端金属リング樹脂除去装置 |
US16/130,397 US10843245B2 (en) | 2013-05-13 | 2018-09-13 | Endless metal ring manufacturing method and endless metal ring resin removal device |
US16/130,243 US10926310B2 (en) | 2013-05-13 | 2018-09-13 | Endless metal ring manufacturing method and endless metal ring resin removal device |
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US16/130,397 Division US10843245B2 (en) | 2013-05-13 | 2018-09-13 | Endless metal ring manufacturing method and endless metal ring resin removal device |
US16/130,243 Division US10926310B2 (en) | 2013-05-13 | 2018-09-13 | Endless metal ring manufacturing method and endless metal ring resin removal device |
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CN (1) | CN105190090B (ja) |
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JP2021127477A (ja) * | 2020-02-12 | 2021-09-02 | トヨタ自動車株式会社 | 金属リング積層体の製造方法 |
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US20190009317A1 (en) | 2019-01-10 |
RU2015134645A (ru) | 2017-06-19 |
KR101766566B1 (ko) | 2017-08-08 |
US20160059288A1 (en) | 2016-03-03 |
CN105190090B (zh) | 2017-04-12 |
US20190009316A1 (en) | 2019-01-10 |
US10843245B2 (en) | 2020-11-24 |
CN105190090A (zh) | 2015-12-23 |
EP2998612A4 (en) | 2016-12-21 |
KR20150108883A (ko) | 2015-09-30 |
EP3388711B1 (en) | 2020-08-05 |
US10926310B2 (en) | 2021-02-23 |
EP2998612A1 (en) | 2016-03-23 |
EP3388711A1 (en) | 2018-10-17 |
JPWO2014184838A1 (ja) | 2017-02-23 |
RU2627829C2 (ru) | 2017-08-11 |
JP6237767B2 (ja) | 2017-11-29 |
EP2998612B1 (en) | 2019-06-26 |
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