Classifications

• • 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
  • B21D37/00—Tools as parts of machines covered by this subclass
  • B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
  • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
  • B21B19/06—Rolling hollow basic material, e.g. Assel mills
  • B21B19/10—Finishing, e.g. smoothing, sizing, reeling
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
  • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
  • B21C37/30—Finishing tubes, e.g. sizing, burnishing
• • 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
  • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
  • B21D39/08—Tube expanders
  • B21D39/20—Tube expanders with mandrels, e.g. expandable
• • 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
  • B21D41/00—Application of procedures in order to alter the diameter of tube ends
  • B21D41/02—Enlarging
• • 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
  • B21D41/00—Application of procedures in order to alter the diameter of tube ends
  • B21D41/02—Enlarging
  • B21D41/026—Enlarging by means of mandrels
  • B21D41/028—Enlarging by means of mandrels expandable mandrels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B33—ADDITIVE MANUFACTURING TECHNOLOGY
  • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
  • B33Y10/00—Processes of additive manufacturing
• • 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
  • F16N—LUBRICATING
  • F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
  • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
  • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
  • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
  • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
  • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P10/00—Technologies related to metal processing
  • Y02P10/25—Process efficiency

Definitions

• the invention relates to a lubricating ring according to the preamble of claim 1.
• the invention also relates to a method for producing a lubricating ring having the features of claim 6.
• the additively manufactured part consists of a high-strength steel.
• the large pipes have a diameter of 14 inches or less.
• the additively manufactured part has circumferential common rails for lubricant guidance.
• the additively manufactured part is designed to integrate the function of two-wire distributors.
• the invention also relates to a method for producing a lubricating ring according to the invention, characterized by the steps:
• the field of application of the invention can be used both as a retrofit solution in new plants and in existing plants. Keywords to the invention are: pipe welding systems, SAW pipes, mechanical expander, expander tool, calibration of large pipes
• the purpose of the invention is the simplified and reproducible production of expander tools for calibrating large pipes with diameters of 14 inches and smaller.
• Disadvantages of prior art solutions Especially with expander tools for small pipe diameters (e.g., 14 inches and smaller), conventional manufacturing has its limitations. The reason for this is the small space in the lubrication ring, which makes it difficult to position and manufacture the fluid bores. Because to redirect a fluid by 90 °, two holes, one in the vertical direction and the other in the horizontal direction are required. Thus, the production of lubricating rings for 14-inch pipes is very complex and risky, since in some areas only a few millimeters remain until a collision with another hydraulic bore. If so, the part becomes scrap.
• the invention is a hybrid component that combines conventional and additive manufacturing.
• a ring of a low-strength, but inexpensive structural steel is used on the complex part of a high-strength material by the additive manufacturing, or 3D printing called, generated in layers.
• 3D printing 3D printing
• a mild steel with low strength properties is sufficient because the critical cross section is not in this area of the component.
• the through-holes for the subsequent assembly and the Flydraulik ein are conventionally manufactured in the steel ring.
• For the layered structure of the ring is then then aligned in the printer assembly space and mounted and the metal powder layers are applied to the blank and melted using a laser.
• the SMS group design is also characterized by the two circumferential common rails. These supply the individual channels to the two-way distributors with expander oil.
• FIG. 1 shows a sectional view through a prior art expander with inventive lubricating ring.
• Fig. 2 shows a three-dimensional view of a lubrication ring according to the prior art.
• FIG. 3 shows the lubricating ring of Fig. 2 in a partially cutaway view with the indicated steps for the production of the holes.
• FIG. 4 shows a three-dimensional view of the inventive lubricating ring from FIG. 1 and the lubricating ring as a hybrid component.
• the expander 1 shown in Fig. 1 comprises a wedge 2 which is displaceable over a tie rod 3 relative to oppositely shaped segments 4, so that the segments 4 are pressed radially outward to deform a pipe (not shown) from the inside or to calibrate.
• the wedge 2 has lubricant channels (not shown), which transport the lubricant into the gap between the wedge 2 and segments 4.
• the wedge 2 is connected by a nut 5 with the pull rod. Between the nut 5, a disk 7 and then a lubricating ring 6 are arranged as a stack in the pulling direction.
• the lubricant is from a supply pin 8 via
• Fig. 2 and Fig. 3 show a previously known, manufactured in a conventional manner lubricating ring.
• Fig. 3 illustrates how previously fluid bores or lubricant channels were introduced through holes in the lubricating ring 6.
• the previously known lubricating ring 6 'according to FIG. 2 can be used as an alternative to the inventive lubricating ring 6 according to FIG. 4 in the expander according to FIG. 1 be provided, or the inventive lubricating ring 6, the conventional lubricating ring 6 ', optionally with additional adjustment of the disc 7, replace.
• the 4 comprises a conventionally manufactured part 12 in the form of a ring, the shape of which in this area largely corresponds to the corresponding part of the lubricating ring 6 'according to FIG. 2.
• a manufactured by additive manufacturing part 13 connects in the axial direction of the conventionally manufactured part 12 at.
• the additively manufactured part 13 faces the disk 7 and abuts against it.
• the lubricating ring 6 according to FIG. 4 is thus designed as a hybrid component.
• the conventionally manufactured part 12 is made of structural steel.
• the additive manufactured part 13 is made of high strength steel.
• two circumferential common rail lines 14 are provided for distributing the lubricant, inter alia to the two-line distributors 11.
• Additive Manufacturing Inventory Announcement Lubricating Ring as a Hybrid Component
• they are calibrated with respect to their roundness and dimensional stability after internal and external welding using the mechanical expander 1.
• Each expansion process involves high surface pressure and thus friction between the surfaces of the segments and the wedge. The friction is reduced by a defined lubrication.
• the lubrication ring acts as a lubricant distributor and forwarder.
• the SMS group design is characterized by the two circulating common rails 14. These supply the individual channels to the two-line distributors 11, in which then a precisely defined amount of lubricant is ejected.
• the lubricating oil supply for the two Common Rails 14 takes place only via two channels 10, which has a great advantage on the number of necessary seals respectively the number of possible leakage points. Because this is reduced by 17%. This also eliminates the need for special seals.
• the design of the AM area is defined so that the effort for the subsequent post-processing is minimized. For this purpose, all angles in the printing direction are chosen so that the need for support structures omitted.
• the rework for the seat of the two-line manifold 11 is also kept as low as possible.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Materials Engineering (AREA)
• Pistons, Piston Rings, And Cylinders (AREA)
• Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
• Mounting, Exchange, And Manufacturing Of Dies (AREA)
• Powder Metallurgy (AREA)
• Metal Extraction Processes (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=68053012

Family Applications (1)

Country Status (9)

Families Citing this family (5)

Citations (2)

Family Cites Families (27)

• 2019
  • 2019-03-28 DE DE102019204376.3A patent/DE102019204376A1/de not_active Withdrawn
  • 2019-04-12 US US17/046,335 patent/US11396036B2/en active Active
  • 2019-04-12 BR BR112020020862-0A patent/BR112020020862A2/pt not_active Application Discontinuation
  • 2019-04-12 EP EP19718149.8A patent/EP3774103A1/de not_active Withdrawn
  • 2019-04-12 RU RU2020132063A patent/RU2760901C1/ru active
  • 2019-04-12 CN CN201980025122.7A patent/CN112041100B/zh active Active
  • 2019-04-12 JP JP2020555483A patent/JP7041758B2/ja active Active
  • 2019-04-12 WO PCT/EP2019/059548 patent/WO2019197664A1/de not_active Ceased
• 2020
  • 2020-10-12 SA SA520420344A patent/SA520420344B1/ar unknown

Patent Citations (2)

Non-Patent Citations (1)

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