WO2015121951A1 - Procédé de production de rouleaux creux de cintrage, rouleau creux de cintrage et dispositif mis en oeuvre dans un procédé de fabrication de feuilles d'acier - Google Patents

Procédé de production de rouleaux creux de cintrage, rouleau creux de cintrage et dispositif mis en oeuvre dans un procédé de fabrication de feuilles d'acier Download PDF

Info

Publication number
WO2015121951A1
WO2015121951A1 PCT/JP2014/053386 JP2014053386W WO2015121951A1 WO 2015121951 A1 WO2015121951 A1 WO 2015121951A1 JP 2014053386 W JP2014053386 W JP 2014053386W WO 2015121951 A1 WO2015121951 A1 WO 2015121951A1
Authority
WO
WIPO (PCT)
Prior art keywords
welding
plate
hollow roll
bending hollow
metal plate
Prior art date
Application number
PCT/JP2014/053386
Other languages
English (en)
Japanese (ja)
Inventor
池田　博之
秀昭 末盛
洋一 甲斐
史朗 吉尾
和久 橘高
山口　孝幸
孝幸 會田
裕太 藤原
達也 星本
Original Assignee
三菱日立製鉄機械株式会社
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 三菱日立製鉄機械株式会社 filed Critical 三菱日立製鉄機械株式会社
Priority to PCT/JP2014/053386 priority Critical patent/WO2015121951A1/fr
Priority to JP2014520454A priority patent/JP5650358B1/ja
Priority to CN201480000371.8A priority patent/CN104125871B/zh
Publication of WO2015121951A1 publication Critical patent/WO2015121951A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/004—Filling of continuous seams
    • B23K33/006—Filling of continuous seams for cylindrical workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • B23K26/26—Seam welding of rectilinear seams
    • 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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/0869—Devices involving movement of the laser head in at least one axial direction
    • B23K26/0876—Devices involving movement of the laser head in at least one axial direction in at least two axial directions
    • B23K26/0884—Devices involving movement of the laser head in at least one axial direction in at least two axial directions in at least in three axial directions, e.g. manipulators, robots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/10—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • B23K26/26—Seam welding of rectilinear seams
    • B23K26/262—Seam welding of rectilinear seams of longitudinal seams of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
    • B23K37/0229—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track the guide member being situated alongside the workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26

Definitions

  • the present invention provides a plate bending hollow roll manufacturing method and a plate bending hollow roll that can be transported while maintaining a higher surface quality of the steel sheet in the steel sheet transporting process in the steel sheet manufacturing process, and that can reduce the manufacturing cost. And a steel plate manufacturing process apparatus.
  • the roll surface shape may change due to continuous pressure or frictional load from the steel plate to be transported, which may cause cracking or peeling of the surface treatment layer.
  • the surface quality of the resin deteriorated. Therefore, it is necessary to increase the surface hardness of the hollow roll to reduce the change in the surface shape.
  • measures have been taken such as using hard high carbon steel having a carbon equivalent of 0.45% or more and increasing the surface hardness by applying a heat treatment such as quenching.
  • a heat treatment such as quenching.
  • a high-carbon steel roll base material is welded to the end face using a welding material on a plate bending process to form a hollow roll, defects such as cracks are present in the heat-affected part of the weld. Therefore, pre-heat treatment and post-heat treatment are required.
  • the welding material has a composition in which a low alloy component and a deoxidizing component are added in order to suppress quench hardening for the purpose of preventing weld cracking.
  • the hardness of the welded portion using the welding material tends to be lower than that of the roll base material, and it is difficult to uniformly apply the roll surface roughness in the roughness applying process necessary for the manufacture of the roll for conveyance. there were.
  • the rough roll surface roughness of the weld line may be transferred to the steel plate.
  • Patent Documents 1 to 4 disclose the method.
  • a roll is manufactured by melt-bonding a roll base material itself with an electron beam or the like without using a welding material. Further, in the method described in Patent Document 2, a roll is manufactured by joining roll base material end faces by a liquid phase diffusion bonding method. Further, in the method described in Patent Document 3, a welding material is used, and after joining the end surfaces of the roll base material, the boundary line portion between the roll base material and the welding material is all scraped into a groove shape, and then the shaved groove is removed. I try to refill again.
  • joining is performed by high heat input welding such as submerged arc welding, and then the outer peripheral surface of the welded portion and its periphery in order to eliminate the heat affected zone by high heat input welding.
  • the side is excavated by gouging or the like and then refilled by low heat input welding such as plasma welding.
  • liquid phase diffusion bonding is performed with an insert material interposed between the butted end faces.
  • this bonding method makes it difficult to control defects, and advanced measures such as control of the bonding atmosphere and cleaning of the surfaces to be bonded are necessary to prevent the formation of inclusions such as oxides.
  • Patent Document 3 uses a welding material to join, scrapes precipitates such as pro-eutectoid ferrite generated on the boundary line between the roll base material and the welding material into a groove shape, and low heat input welding. Therefore, it is made to backfill with weld metal.
  • this method has the disadvantage that it requires further steps such as grinding and refilling after the joining operation, which requires time for manufacturing and increases costs.
  • the present invention solves the above-mentioned problems and eliminates the transfer of the roll surface shape to the steel plate to be transported in a state in which the production capacity of the equipment is sufficiently exerted, thereby enabling the transport of the steel plate with high surface quality. It aims at providing the manufacturing method of the plate bending hollow roll for manufacturing a bending hollow roll efficiently and at low cost, a plate bending hollow roll, and a steel plate manufacturing process apparatus.
  • the abutting accuracy of the abutting surface is important.
  • the present invention also solves this problem.
  • the first invention is a state in which end surfaces of both end portions of the metal plate bent into the cylindrical shape are brought into contact with each other after the plate bending process for bending the rectangular metal plate into a cylindrical shape.
  • groove processing is performed on the inner peripheral side of both end portions that have been butted to form a groove processing portion, and end surfaces on the outer peripheral side of the both end portions that have been butted are machined to smooth the end surfaces, and then
  • a pressing force is applied to the cylindrical metal plate from the outer peripheral side to narrow the gap between the end faces of the both ends, and in this state without interposing a welding material between the end faces of the both ends,
  • the both end portions of the metal plate are welded with a laser beam, and then welding is performed on the inner peripheral side groove processing portion using a welding material, thereby forming the cylindrical metal plate into a cylindrical shape. It is characterized by doing.
  • the step of machining the end faces on the outer peripheral side of the abutted both ends forms a parallel interval between the end faces of the both ends. is there.
  • the step of machining the outer peripheral side end faces of the abutted both ends is in a state where the gap formed between the end faces of the both end portions is narrowed.
  • the end surfaces of the abutted ends are formed in a tapered shape with the outer peripheral side opened so that the entire end surfaces of the ends are parallel.
  • a fourth invention is the method according to any one of the first to third inventions, wherein the welding using the laser beam and the welding using the welding material are performed using an arm type robot.
  • the step of performing welding using a welding material on the inner periphery side groove processing portion includes low heat input to the groove processing portion.
  • the first weld layer is formed by welding
  • the second weld layer is formed on the first weld layer by performing high heat input welding having a larger heat input than the low heat input welding to form the second weld layer.
  • a welded part having a two-layer structure is formed in the pre-processed part.
  • the step of applying a pressing force from the outer peripheral side to the metal plate bent into a cylindrical shape to narrow the gap between the end faces of the both ends uses a fixing jig provided with pressing means. Then, the metal plate bent into the cylindrical shape is pressed from the outer peripheral side so that the gap between the end faces of the both end portions is reduced.
  • the seventh invention is a plate-bending hollow roll manufactured using any one of the first to sixth inventions.
  • the eighth invention is a steel plate manufacturing process apparatus using a plate bending hollow roll manufactured using any one of the first to sixth inventions.
  • the both end surfaces are machined after plate bending, thereby avoiding the roundness correction process as in the conventional method and matching with extremely high accuracy when matching the weld end surfaces.
  • the direct welding between the roll base materials which does not require a welding material that causes a hardness difference, which has been difficult in the past, can be realized by high-precision laser beam welding.
  • the welding time can be remarkably shortened compared to a method of joining only by low heat input welding. For example, when welding a grooved portion by MIG welding or MAG welding as low heat input welding, it is necessary to weld about 30 times to build up the grooved portion. In the case of the submerged arc welding method, the welding time can be increased by approximately 10 times, so that the construction time can be shortened, and the associated cost reduction can be simultaneously achieved.
  • both ends when the gap is narrowed are formed so that the outer peripheral side is opened at the time of machining of the butt portion so that the parallel state with extremely high accuracy is obtained when pressed. It becomes possible to improve the adhesion degree of a surface, and can further improve the butting precision of a welding end surface.
  • the distance from the surface of the roll that needs to be adjusted depending on the material of the plate, the plate thickness, the roll diameter, etc., the laser beam It is possible to automatically change the parameters such as the incident angle of the welding head, the feed rate, and the laser intensity, and it is possible to improve the work efficiency by reducing the time and to reduce the manufacturing cost associated therewith.
  • the first low heat input welding is used for welding to the grooved portion on the inner peripheral surface side.
  • the weld is formed as a structure in which one layer is sandwiched and the second layer is formed by high heat input welding on the one layer, the heat effect from the high heat input welding to the outer peripheral surface of the roll can be further reduced, and the difference in roll surface hardness can be reduced. Further reduction can be realized.
  • a plate bending process for bending a rectangular metal plate into a cylindrical shape is performed.
  • the metal plate stainless steel, chromium steel with enhanced hardenability or wear resistance, or chromium molybdenum steel can be used in addition to carbon steel.
  • the plate bending method may be a known method.
  • the butted left end surface 2a and the butted right end surface 2b of the cylindrical metal plate 12 subjected to the plate bending process are subjected to spot welding or the like on the butted portion 1 of the metal plate 12, preferably the side surface of the butted portion 1. Temporarily fix welding is performed to make a butt contact.
  • groove processing is performed on the inner peripheral surface side of the butted left end surface 2a and the butted right end surface 2b after temporary fixing by a machining device 3c for inner surface groove processing provided with an end mill.
  • the inner peripheral side groove processing portion 9 is formed.
  • the shape of the inner periphery side groove processing portion 9 formed by this groove processing is not limited to the V-shaped groove shape as shown in FIG. 1, and may be another similar shape such as a U-shape.
  • explanatory drawing of a groove processing process is shown.
  • FIG. 2 is an explanatory diagram of the machining process of the butt portion 1.
  • matching part 1 of the metal plate 12 by this machining apparatus is not limited to the machining by an end mill.
  • a method such as simultaneous grinding of both end surfaces with respect to the butted left end surface 2a and the butted right end surface 2b by a cylindrical grindstone may be used.
  • the term “matching” refers to a machining step in which machining processing is simultaneously performed on the butted left end surface 2a and the butted right end surface 2b forming the butting portion 1 of the metal plate 12.
  • this machining step is preferably performed by end milling on the butting portion 1 described above. For example, each end surface is sequentially machined by an end mill or the like while the both end surfaces of the metal plate 12 are butted. You can also.
  • the C-type fixing jig 7 includes pressing bolts (two pairs of upper pressing bolts 5a, two pairs of side pressing bolts 5b, and two pairs of lower portions) that are threadedly engaged with a threaded block 5d as shown in FIG.
  • a plurality of C-shaped frames 5e provided with pressing bolts 5c) are provided in the roll axis direction.
  • the plurality of frames 5e are arranged at a plurality of positions in the axial direction of the metal plate 12 after being combined in the previous machining step, and the outer peripheral surface side of the metal plate 12 bent into a cylindrical shape is set to each frame 5e.
  • FIG. 3 is an explanatory diagram of a laser beam welding process, which is the next process when fixed by the C-type fixing jig 7.
  • laser beam welding is performed on the butt portion 1 by the laser beam welding device 6a in a state of being held by being pressed by the six pressing bolts (5a, 5b, 5c) of the C-type fixing jig 7 described above.
  • the butt portion 1 is joined.
  • FIG. 4 it is turned upside down while being pressed and fixed by the above-described C-type fixing jig 7, and the welding head 10 is introduced into the groove processing portion 9 on the inner peripheral side.
  • the groove welded portion 11 is formed and joined to the groove processed portion 9 by a general-purpose welding method using a welding material such as a submerged arc welding method, and a cylindrical metal plate 12 is formed into a cylindrical shape. To do.
  • the C-type fixing jig 7 is removed after the welding is completed.
  • the number of pressing bolts is not limited to six, and the metal plate 12 after the matching processing is even from the outer peripheral surface side. It can be set to any number that can be pressed.
  • the C-type fixing jig 7 has been described in the case where there are a plurality of frames 5e in the roll axis direction, the number of the frames 5e can be single in the roll axis direction.
  • the fixing jig used to hold the metal plate 12 is not limited to the C-type fixing jig 7 as shown in FIG. 3, but may be a ring-type fixing jig 4 as shown in FIG.
  • the ring-type fixing jig 4 is a ring-shaped frame provided with pressing bolts (two pairs of upper pressing bolts 5a, two pairs of side pressing bolts 5b, and two pairs of lower pressing bolts 5c). A plurality of 5f are provided in the roll axis direction.
  • FIG. 5 is an explanatory diagram of the laser beam welding process when the ring-type fixing jig 4 is used for fixing.
  • the laser beam welding head 6b of the laser beam welding device 6 is introduced into the inner surface side of the metal plate 12 machined from the butt portion 1, and welding is performed on the butt portion 1 from the inner surface side by a laser beam.
  • the welding direction is downward in FIG. 5, it may be upward.
  • the number of pressing bolts 5a, 5b, and 5c in the ring-type fixing jig 4 is not limited to six as shown in FIG. 5, and can arbitrarily press the metal plate 12 after being processed from the outer peripheral surface side. It can be made into the number of.
  • the ring-type fixing jig 4 has been described in the case where there are a plurality of frames 5f in the roll axis direction, the number of frames 5f can be single in the roll axis direction.
  • a primary heat treatment for the purpose of material refining is optionally performed on the welded cylindrical metal plate 13.
  • This primary heat treatment is intended to uniformly diffuse the hardening element carbon, etc., and release internal residual stress. For example, normalization, annealing, annealing / tempering, strain relief annealing, etc. It is done.
  • the outer surface roughing of the cylindrical metal plate 13 and / or the rough adjustment of the roll diameter is optionally performed.
  • a surface hardening heat treatment is performed. This surface hardening heat treatment is often performed by so-called induction hardening, and after hardening, tempering can be performed to obtain a tough surface hardening layer.
  • side plates and shafts are attached to both side surfaces of the cylindrical metal plate 13.
  • the side plate and the shaft can be attached before the surface hardening heat treatment.
  • roll diameter finishing of the cylindrical metal plate 13 is performed.
  • the final product, a plate-bending hollow roll is completed through the adjustment of the roughness of the outermost layer of the roll surface of the cylindrical metal plate 13 and the construction such as hard chrome plating.
  • the inner surface side of the abutting part is preliminarily subjected to groove processing on both ends, and the butting part is machined. Align and process. Therefore, even if a thick plate is used, the end faces to be welded can be abutted with extremely high accuracy, so that high-precision laser beam welding, which has been difficult in the past, can be joined. In the direct welding between roll base materials by this laser beam, the weld line does not become a layer of different components, and high energy density welding can realize welding with few heat-affected portions and uniform surface hardness.
  • the first embodiment of the method for manufacturing a plate bending hollow roll of the present invention by performing machining after plate bending, it is possible to ensure the butt accuracy required for laser beam welding, and to press from the outer peripheral side.
  • Laser beam welding can be performed by applying a pressure and maintaining a state in which the gap between the end faces of both ends is narrowed.
  • groove processing is performed on both ends of the butt portion in advance so that the height of the laser beam butt weld portion remains so as not to affect the outer surface on the inner surface side of the butt portion.
  • the welding time can be remarkably shortened compared to the method of joining only by low heat input welding. For example, when welding a grooved portion by MIG welding or MAG welding as low heat input welding, it is necessary to weld about 30 times to build up the grooved portion. In the case of the submerged arc welding method, the welding time can be increased by approximately 10 times, so that the construction time can be shortened, and the associated cost reduction can be simultaneously achieved.
  • the plate bending hollow roll which enables conveyance of the high-quality surface-treated steel sheet without transfer of the roll surface shape to the steel sheet to be conveyed can be produced efficiently and at low cost.
  • the fixing method of the metal plate 12 using temporary fixing welding at the time of the alignment process is one of the applicable methods, as long as the position of the end portion of the metal plate 12 subjected to the plate bending process is fixed. It is not related to this method.
  • the C-type fixing jig 7 is attached without performing temporary fixing welding, and the butted portion 1 is in a state where the butted left end surface 2a and butted right end surface 2b of the metal plate 12 are butted. Can also be machined. In this case, it is desirable to press and fix from the inner surface as required by means such as a hydraulic jack.
  • Example 2 a plate bending process for bending a rectangular metal plate into a cylindrical shape is performed. Then, spot welding or the like is performed on the butt portion 1 of the cylindrical metal plate 12, preferably the side surface of the butt portion 1, and temporary bonding is performed to obtain a butt state. Next, as shown in FIG. 1, groove processing is performed on the inner peripheral surface side of the butted portion 1 after temporary fixing by a machining device 3 c equipped with an end mill.
  • the matching process is performed on the butt portion 1 of the metal plate 12 to form a tapered gap having an interval of about 10 mm.
  • the taper-shaped angle ⁇ is located on the opposite side in the circumferential direction from the midpoint of both end faces (2a, 2b) of the metal plate 12 opened at an interval of about 10 mm. The angle when the metal plate 12 is opened radially toward the both end faces (2a, 2b) of the metal plate 12 with reference to the point 8 at the center in the thickness direction is used as a reference.
  • the taper shape in the present invention means both end faces when the gap between both end faces (2a, 2b) is narrowed when viewed from a direction perpendicular to the central axis of the cylindrical metal plate 12.
  • (2a, 2b) A shape in which the outer peripheral surface side is open compared to the inner peripheral surface side so that the entire surface is parallel.
  • FIG. 6 is an explanatory view of a taper-shaped machining process
  • FIG. 7 is an explanatory view of a reference point of the taper angle.
  • Example 2 Thereafter, in the same manner as in Example 1, the pressing bolts (5a, 5b, 5c) provided in the C-shaped fixing jig 7 as shown in FIG. And the butt
  • the fixing jig may be a ring-type fixing jig 4 as in the first embodiment.
  • the C-type fixing jig 7 or the ring-type fixing jig 4 is attached after using means such as a hydraulic jack from the inner surface as necessary, and the metal plate is not temporarily mounted. You may machine the butt
  • the cylindrical metal plate 13 after welding is subjected to arbitrary primary heat treatment for the purpose of material tempering, arbitrary outer surface roughing, rough adjustment of an arbitrary roll diameter, and surface hardening heat treatment.
  • arbitrary primary heat treatment for the purpose of material tempering, arbitrary outer surface roughing, rough adjustment of an arbitrary roll diameter, and surface hardening heat treatment.
  • the second embodiment of the method for manufacturing a plate bending hollow roll of the present invention substantially the same effect as that of the first embodiment of the method for manufacturing a plate bending hollow roll described above can be obtained.
  • the end face after the end processing of both ends of the metal plate 12 in a tapered shape with the outer peripheral side open, both ends when the gap between the end faces of the both ends of the metal plate 12 is narrowed.
  • the entire end face of the part is parallel, and the abutting part 1 can be formed to be in a highly accurate parallel state when pressed, and the degree of adhesion of both end faces of the metal plate 12 when the gap is narrowed is improved. Therefore, it is possible to further improve the butting accuracy of the weld end face.
  • the reference point of the taper-shaped angle ⁇ is not limited to the point 8 in FIG.
  • it can be set as an arbitrary point on the inner peripheral side with respect to the outer surface of the metal plate 12 shown in FIG. 7, and more preferably, an intermediate point between both end surfaces to be tapered and the metal plate 12 subjected to plate bending processing. It is desirable to set it as an arbitrary point in consideration of the thickness and diameter of the metal plate 12 on the line segment connecting the center.
  • FIG. 8 is an explanatory diagram of a laser beam welding process by an arm type robot.
  • a plate bending process for bending a rectangular metal plate into a cylindrical shape is performed as in the first embodiment.
  • spot welding or the like is performed on the butt portion 1 of the cylindrical metal plate 12, preferably the side surface of the butt portion 1, and temporary bonding is performed to obtain a butt state.
  • groove processing is performed on the inner peripheral surface side of the butted portion 1 after temporary fixing by a machining device 3 c equipped with an end mill.
  • a machining device provided with a straight-shaped end mill 3a1 or a tapered end mill 3b1 a matching process is performed on the butt portion 1 of the metal plate 12, and the interval of about 10 mm is uniform or tapered. Create a gap.
  • a laser beam welding head 6a is provided at the tip of the robot arm 6c of the arm type robot 6, and various welding conditions for the metal plate 12 as a roll base material (plate material, plate thickness, roll diameter, etc.).
  • the necessary setting values for example, the distance from the roll surface, the incident angle of the laser beam welding head, the feed speed, the laser intensity, etc. set in advance in accordance with the above are set.
  • an arm equipped with the laser beam welding head 6a described above is introduced to the outer surface side of the metal plate 12 or the inner surface side of the metal plate 12, and laser beam welding is performed.
  • the ring-type fixing tool 4 shown in FIG. 5 is used, and when welding from the inner surface of the metal plate 12, the ring-type fixing tool 4 shown in FIG. 5 is used. It is desirable to do. Thereafter, as shown in FIG. 4, it is turned upside down while being pressed and fixed by the C-type fixing jig 7, and welding such as a submerged arc welding method is performed from the inner peripheral side to the groove portion 9 on the inner peripheral side. A groove weld portion 11 is formed and joined to the groove processing portion 9 by a general-purpose welding method using a material. After the welding is completed, the C-type fixing jig 7 is removed.
  • the cylindrical metal plate 13 after welding is subjected to arbitrary primary heat treatment for the purpose of material tempering, arbitrary outer surface roughing, rough adjustment of an arbitrary roll diameter, and surface hardening heat treatment.
  • arbitrary primary heat treatment for the purpose of material tempering, arbitrary outer surface roughing, rough adjustment of an arbitrary roll diameter, and surface hardening heat treatment.
  • the third embodiment of the method for producing a plate bending hollow roll of the present invention substantially the same effect as that of the first embodiment of the method for producing a plate bending hollow roll described above can be obtained.
  • the distance from the surface of the roll, the incident angle of the laser beam welding head, the feed rate, laser, etc. that need to be adjusted each time depending on the material of the plate, the plate thickness, the roll diameter, etc. It is possible to automatically change parameters such as strength, thereby improving work efficiency, reducing time, and reducing manufacturing costs associated therewith.
  • a plate bending process for bending a rectangular metal plate into a cylindrical shape is performed.
  • spot welding or the like is performed on the butt portion 1 of the cylindrical metal plate 12, preferably the side surface of the butt portion 1, and temporary bonding is performed to obtain a butt state.
  • groove processing is performed on the inner peripheral surface side of the butted portion 1 after temporary fixing by a machining device 3 c equipped with an end mill.
  • a matching process about 10 mm interval
  • a narrow or tapered gap is formed.
  • FIG. 9 it is turned upside down while being pressed and fixed by the ring-type fixing jig 4, and low-heat-input welding (for example, MAG) using a welding material from the inner peripheral side to the groove processing portion 9.
  • Overlay welding is performed by welding, MIG welding, electron beam welding method using a welding material, laser beam welding method using a welding material, plasma transfer arc welding method, or the like, to form the first weld layer 11a.
  • a low-carbon welding material with low quenching hardenability is used. Therefore, the carbon content is diluted (diffusion) by the fusion of the butt portion 1 and the low-carbon welding material.
  • the low heat input welding method such as MAG welding or MIG welding described above is used.
  • the welding material of the first weld layer 11a has a lower carbon content than the base material, and if the penetration into the butt portion 1 that becomes the base material and the hardened layer is increased, it is hardened by dilution (diffusion) by fusion. Since the depth of the layer may decrease, the welding conditions are such that the penetration into the base metal is kept to about 2 mm without fear of poor fusion (internal defects) (for example, 2-3 times by low heat input welding) It is desirable to use overlay welding).
  • high heat input welding using a welding material having a larger heat input than the welding at the time of forming the first welding layer 11a on the upper side of the first welding layer 11a (the inner peripheral side of the cylindrical metal plate 13)
  • overlay welding is performed by a submerged arc welding method, a carbon dioxide gas welding method, an electroslag welding method, or the like to form the second weld layer 11b.
  • a low-carbon welding material with low quenching hardenability is used as in the build-up welding that forms the first weld layer 11a.
  • the first weld layer 11a serves as a buffer layer.
  • the butt portion 1 The effect of reducing the influence on the is obtained.
  • the second weld layer 11b formed by heat welding is formed in the groove processing portion 9.
  • the process which forms and joins the groove part weld part 11 which consists of the 1st weld layer 11a and the 2nd weld layer 11b in this groove process part 9 is the welding method which is as low heat input as possible as a 1st weld layer.
  • the first weld layer 11a is formed by the above-mentioned method, and then the second weld is formed on the upper (inner circumference) side of the first weld layer 11a by a general-purpose large heat input welding method having a larger heat input than when the first weld layer 11a is formed. What is necessary is just to form the welding layer 11b.
  • low heat input welding is performed a plurality of times or a plurality of methods to form the first welding layer 11a
  • large heat input welding is performed a plurality of times or a plurality of methods to form the second welding layer 11b. Is also possible.
  • the cylindrical metal plate 13 after welding is subjected to arbitrary primary heat treatment for the purpose of material tempering, arbitrary outer surface roughing, rough adjustment of an arbitrary roll diameter, and surface hardening heat treatment.
  • arbitrary primary heat treatment for the purpose of material tempering, arbitrary outer surface roughing, rough adjustment of an arbitrary roll diameter, and surface hardening heat treatment.
  • first welding layer 11a first welding layer 11a
  • second weld layer 11b second weld layer 11b
  • FIG. 11 is a diagram showing an example in which a plate bending hollow roll manufactured by the method for manufacturing a plate bending hollow roll of the present invention exemplified in the first to fourth embodiments is applied to a steel plate manufacturing process apparatus.
  • a steel sheet manufacturing process apparatus mainly in CAL (Continuous Annealing Line), CGL (Continuous Hot Plating Line; Continuous Galvanizing Line) and the like, particularly in a diameter of 400 mm to 1500 mm.
  • CAL Continuous Annealing Line
  • CGL Continuous Hot Plating Line
  • Galvanizing Line Continuous Galvanizing Line
  • the hollow roll R a plate-bending hollow roll manufactured by the method for manufacturing a plate-bending hollow roll of the present invention exemplified in the first to fourth embodiments is used.
  • the plate bending hollow roll manufactured by the manufacturing method of the plate bending hollow roll of the present invention exemplified in the first to fourth embodiments is limited to the steel plate manufacturing process apparatus as shown in FIG. Not.
  • the transfer of the surface roughness non-uniformity portion generated by the presence of the welding line with the welding material to the steel plate is eliminated, and the surface of the steel plate A plate-bending hollow roll that can be conveyed while maintaining high quality can be efficiently manufactured at low cost.
  • This plate bending hollow roll is very suitable for the hollow roll for conveyance used in a steel plate manufacturing process. Therefore, according to the fifth embodiment of the plate bending hollow roll and the steel plate manufacturing process apparatus of the present invention, sufficient line tension can be applied without worrying about transfer to the steel plate. It is possible to operate with full production capacity.
  • the abutted state means a state in which the metal plate 12 faces each other with a gap between the butted left end surface 2a and the butted right end surface 2b narrowed.
  • the state in which the gap is narrowed is a state in which the gap between the butted left end surface 2a and the butted right end surface 2b of the metal plate 12 is 0.8 mm or less, more preferably 0.5 mm or less.
  • the step between the butted left end surface 2a and the butted right end surface 2b of the metal plate 12 is 1.0 mm or less, more preferably 0.5 mm or less, More preferably, it means a state of zero.
  • Inner peripheral side groove processing part (V-shaped), 10 ... welding head, 11 ... groove welded part, 11a ... 1st welding layer, 11b ... second weld layer, 12 ... Cylindrical metal plate (before welding), 13 ... Cylindrical metal plate (after welding), R: A plate bending hollow roll according to the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Robotics (AREA)
  • Laser Beam Processing (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

　Dans cette invention, un processus de cintrage permet de courber une feuille de métal en un cylindre. Ensuite, une soudure de pointage est effectuée, par soudage par points ou similaire d'une surface (2a) d'extrémité gauche d'aboutement et d'une surface (2b) d'extrémité droite d'aboutement d'une feuille (12) de métal, sur un côté d'une partie (1) d'aboutement. Un chanfrein est alors placé côté circonférence interne des deux parties d'extrémité aboutées. Après quoi la partie (1) d'aboutement est soumise à un processus de jointure, et un espace est formé de façon uniforme entre les deux surfaces d'extrémité. La surface périphérique externe la feuille (12) de métal soumise au processus de jointure est ensuite pressée au moyen de boulons de pressions montés sur un outil (7) d'assemblage en forme de C, ce qui permet de maintenir l'espace étroit. Ensuite, la partie (1) d'aboutement est soudée par laser au moyen d'un dispositif (6) de soudage par faisceau laser. Un soudage à apport de chaleur élevé est alors effectué au moyen d'un matériau de soudage et ainsi, la partie (1) d'aboutement est jointe, et la feuille (12) de métal est formée en un cylindre. En conséquence, un rouleau creux de cintrage peut être efficacement produit à faible coût, avec une facilité de production suffisante, ce rouleau creux de cintrage permettant de transporter des feuilles d'acier avec une grande qualité de surface, sans nécessiter le transfert d'une forme de surface de rouleau sur la feuille d'acier transportée.
PCT/JP2014/053386 2014-02-13 2014-02-13 Procédé de production de rouleaux creux de cintrage, rouleau creux de cintrage et dispositif mis en oeuvre dans un procédé de fabrication de feuilles d'acier WO2015121951A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2014/053386 WO2015121951A1 (fr) 2014-02-13 2014-02-13 Procédé de production de rouleaux creux de cintrage, rouleau creux de cintrage et dispositif mis en oeuvre dans un procédé de fabrication de feuilles d'acier
JP2014520454A JP5650358B1 (ja) 2014-02-13 2014-02-13 板曲げ中空ロールの製造方法並びに板曲げ中空ロールおよび鋼板製造プロセス装置
CN201480000371.8A CN104125871B (zh) 2014-02-13 2014-02-13 卷板中空滚筒的制造方法、卷板中空滚筒及钢板制造工艺装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/053386 WO2015121951A1 (fr) 2014-02-13 2014-02-13 Procédé de production de rouleaux creux de cintrage, rouleau creux de cintrage et dispositif mis en oeuvre dans un procédé de fabrication de feuilles d'acier

Publications (1)

Publication Number Publication Date
WO2015121951A1 true WO2015121951A1 (fr) 2015-08-20

Family

ID=51770981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/053386 WO2015121951A1 (fr) 2014-02-13 2014-02-13 Procédé de production de rouleaux creux de cintrage, rouleau creux de cintrage et dispositif mis en oeuvre dans un procédé de fabrication de feuilles d'acier

Country Status (3)

Country Link
JP (1) JP5650358B1 (fr)
CN (1) CN104125871B (fr)
WO (1) WO2015121951A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016086250A2 (fr) 2014-12-01 2016-06-09 Georg Michael Ickinger Cylindre de séchage sous forme de double cylindre coaxial avec interstice annulaire
JP2019055408A (ja) * 2017-09-19 2019-04-11 三菱重工業株式会社 部材の接合方法及びタービン構成部品
WO2019244359A1 (fr) * 2018-06-22 2019-12-26 株式会社Ｋｍｅ Outil de gougeage à air

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT516781A2 (de) * 2015-02-05 2016-08-15 Georg Michael Dipl Ing Dr Techn Ickinger Dünnwandiger Trockenzylinder Verwendung, Verfahren, Vorrichtung, Fertigung
CN107088599A (zh) * 2017-05-06 2017-08-25 芜湖瑞德机械科技有限公司 一种不锈钢管打波机
CN107284795A (zh) * 2017-06-26 2017-10-24 苏州固安包装材料有限公司 一种激光焊接包装桶及其焊接工艺
CN107598373B (zh) * 2017-09-28 2019-09-24 安徽工业大学 一种驱动电机密封筒激光焊接制造方法
CN107639359A (zh) * 2017-10-30 2018-01-30 二重集团（镇江）重型装备厂有限责任公司 一种用于厚壁容器筒体纵缝坡口的改进型焊接工艺
CN110153641A (zh) * 2018-02-11 2019-08-23 上海海立电器有限公司 一种卷板焊接方法及金属圆筒
JP6698927B1 (ja) * 2019-08-22 2020-05-27 株式会社フルヤ金属 金属系筒材の製造方法及びそれに用いられる裏当て治具
CN110722265A (zh) * 2019-11-19 2020-01-24 中国科学院合肥物质科学研究院 一种控制高能束焊接变形的方法
CN111702675B (zh) * 2020-06-22 2021-09-14 徐州徐工传动科技有限公司 一种壳体加工夹具机构
CN111761289A (zh) * 2020-08-17 2020-10-13 陈红 一种用于钢管焊接的夹持装置
CN117399883B (zh) * 2023-12-12 2024-02-20 山东聚鑫专用车制造有限公司 一种绿化喷洒车罐体焊接系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03169412A (ja) * 1989-11-29 1991-07-23 Dai Ichi High Frequency Co Ltd 中空ロール用母材とその母材を用いた中空ロールの製造方法
JP2000051931A (ja) * 1998-08-11 2000-02-22 Mitsubishi Alum Co Ltd 電縫管の製造方法および電縫管製造用溶接ロール
JP2000140912A (ja) * 1998-11-12 2000-05-23 Dai Ichi High Frequency Co Ltd 中空ロール胴体用筒体及びその製造方法
JP2007330982A (ja) * 2006-06-13 2007-12-27 Jfe Steel Kk 溶接部特性の良好な電縫管の製造方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3238215B2 (ja) * 1992-10-08 2001-12-10 三菱重工業株式会社 厚板の突合わせ溶接方法
JP3699779B2 (ja) * 1996-05-15 2005-09-28 第一高周波工業株式会社 中空ロール胴体部材及びその製造方法
JPH10192964A (ja) * 1996-12-28 1998-07-28 Shibuya Kogyo Co Ltd レーザパイプ溶接方法
JP2002001557A (ja) * 2000-04-19 2002-01-08 Hitachi Constr Mach Co Ltd レーザによる突き合わせ溶接方法
JP3782960B2 (ja) * 2001-11-14 2006-06-07 第一高周波工業株式会社 ロール胴体
CN101456098B (zh) * 2009-01-07 2011-02-02 云南大为化工装备制造有限公司 等离子焊焊接容器筒体环缝的方法
CN101564739A (zh) * 2009-05-31 2009-10-28 武汉冶建安装工程有限责任公司 无压头料钢管卷管工艺
CN101722210A (zh) * 2009-12-02 2010-06-09 河南科隆集团有限公司 卷筒的筒皮成形方法
CN102528304B (zh) * 2011-11-30 2014-12-10 浙江博凡动力装备股份有限公司 板材对接焊接方法及焊接坡口
CN102489947B (zh) * 2011-11-30 2014-12-17 攀钢集团工程技术有限公司 钢管砼桁架梁桥主梁下弦管制作工艺
CN102889434B (zh) * 2012-10-24 2015-01-21 浙江金洲管道工业有限公司 一种不锈钢复合焊接钢管及其制造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03169412A (ja) * 1989-11-29 1991-07-23 Dai Ichi High Frequency Co Ltd 中空ロール用母材とその母材を用いた中空ロールの製造方法
JP2000051931A (ja) * 1998-08-11 2000-02-22 Mitsubishi Alum Co Ltd 電縫管の製造方法および電縫管製造用溶接ロール
JP2000140912A (ja) * 1998-11-12 2000-05-23 Dai Ichi High Frequency Co Ltd 中空ロール胴体用筒体及びその製造方法
JP2007330982A (ja) * 2006-06-13 2007-12-27 Jfe Steel Kk 溶接部特性の良好な電縫管の製造方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016086250A2 (fr) 2014-12-01 2016-06-09 Georg Michael Ickinger Cylindre de séchage sous forme de double cylindre coaxial avec interstice annulaire
JP2019055408A (ja) * 2017-09-19 2019-04-11 三菱重工業株式会社 部材の接合方法及びタービン構成部品
WO2019244359A1 (fr) * 2018-06-22 2019-12-26 株式会社Ｋｍｅ Outil de gougeage à air
JPWO2019244359A1 (ja) * 2018-06-22 2021-03-11 株式会社Ｋｍｅ エアーガウジング工具
JP7048119B2 (ja) 2018-06-22 2022-04-05 株式会社Kme エアーガウジング工具

Also Published As

Publication number Publication date
CN104125871A (zh) 2014-10-29
JP5650358B1 (ja) 2015-01-07
CN104125871B (zh) 2016-09-28
JPWO2015121951A1 (ja) 2017-03-30

Similar Documents

Publication Publication Date Title
JP5650358B1 (ja) 板曲げ中空ロールの製造方法並びに板曲げ中空ロールおよび鋼板製造プロセス装置
JP5658420B1 (ja) 板曲げ中空ロールの製造方法および鋼板製造プロセス装置の製造方法
US11161199B2 (en) Friction bonding method
US9566662B2 (en) Method for manufacturing mill roll, mill roll and manufacturing apparatus of mill roll
TW202112474A (zh) 雙面摩擦攪拌接合方法、冷軋鋼帶和鍍覆鋼帶的製造方法、雙面摩擦攪拌接合裝置、冷軋鋼帶和鍍覆鋼帶的製造設備
WO2018070317A1 (fr) Dispositif et procédé de soudage par friction-malaxage
CN109070261B (zh) 结构用钢的摩擦搅拌接合方法和装置
CN109070262B (zh) 结构用钢的摩擦搅拌接合方法和装置
US20100022371A1 (en) Method for producing a roller body and roller body
RU178157U1 (ru) Многослойная заготовка для горячей прокатки
CN110539096A (zh) 滚筒结构件的制造方法
UA128111C2 (uk) Спосіб виготовлення зварної сталевої деталі
CN110814646A (zh) 一种耐磨密封环的加工方法
KR20180016818A (ko) 스테인리스 소구경 파이프 제조방법
JP4266417B2 (ja) 中空ロール胴体用筒体の製造方法
KR100777673B1 (ko) 내마모성을 높인 작업 롤 초크, 그 제조방법 및 압연장치
AU2019101079A4 (en) A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method
JP2012245555A (ja) 工業用ロール及びその製造方法
WO2013031803A1 (fr) Procédé de fabrication et équipement de fabrication d'un tube métallique de petit diamètre
JP2008142744A (ja) 鋼管の突合せ溶接方法および溶接鋼管の製造方法
WO2018070316A1 (fr) Dispositif et procédé de soudage par friction-malaxage
JP5009032B2 (ja) 高強度溶接鋼管の製造装置
WO2012108442A1 (fr) Procédé de soudage
JPH08285030A (ja) ボールネジおよびその製造方法
TWM591092U (zh) 輥端軸套

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2014520454

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14882372

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14882372

Country of ref document: EP

Kind code of ref document: A1