CN115572894B - Inner tube of steam friction damper and preparation process thereof - Google Patents

Inner tube of steam friction damper and preparation process thereof Download PDF

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CN115572894B
CN115572894B CN202211097480.9A CN202211097480A CN115572894B CN 115572894 B CN115572894 B CN 115572894B CN 202211097480 A CN202211097480 A CN 202211097480A CN 115572894 B CN115572894 B CN 115572894B
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blank
steel pipe
cold drawing
inner tube
lifting
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CN115572894A (en
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蒋维平
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Quzhou Yuanfa Machinery Co ltd
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Quzhou Yuanfa Machinery Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/78—Pretreatment of the material to be coated
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel
    • C23G1/081—Iron or steel solutions containing H2SO4
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/04—Apparatus for cleaning or pickling metallic material for cleaning pipes
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

The application discloses an inner tube of a steam friction shock absorber and a preparation process thereof, the steam friction shock absorber comprises a sleeve body, the sleeve body is made of 26MnB5 steel, the 26MnB5 steel is composed of carbon element, silicon element, manganese element, phosphorus element, sulfur element, boron element, chromium element, aluminum element, titanium element and copper element, and the inner tube is subjected to multiple cold drawing, multiple heat treatment and other working procedures, in daily use, through the technical scheme, the tensile strength of the inner tube is more than or equal to 1400Mpa, the yield strength is more than or equal to 1250Mpa, the elongation is 11% -16%, the wall thickness is 1.5mm, the performance is improved by about 50% compared with the existing inner tube when the inner tube is light in weight, and the weight can be reduced by 35% when the same size of phi 48 multiplied by 600mm is adopted.

Description

Inner tube of steam friction damper and preparation process thereof
Technical Field
The invention relates to an inner tube of a steam friction shock absorber and a preparation process thereof.
Background
The shock absorber is widely used in the fields of automobiles and motorcycles, is used for buffering impact shock to a driver caused by impact generated during running of the vehicle, and mainly comprises an outer tube, an inner tube, an oil seal retainer ring, an outer tube guide sleeve, an inner tube guide sleeve, a spring and the like. Because the distance from the connecting end of the outer tube of the shock absorber and the front wheel axle to the pivot point of the upper connecting plate of the inner tube is longer, even if the front wheel axle applies small force to the outer tube, the inner tube is easy to generate elastic deformation to bend, and the bending can cause the inner wall of the outer tube and the outer circle of the inner tube to rub with each other to increase resistance. In particular, the oil seal is deformed by extrusion and is worn out due to bending, so that the outer tube and the inner tube are damaged by pulling and are blocked due to lubrication loss.
The inner tube of the mainstream steam friction damper in the prior art has tensile strength of more than or equal to 900Mpa, yield strength of more than or equal to 800Mpa, elongation of 10% -15%, wall thickness of 2.5mm, insufficient strength and larger mass, and generally adopts a method of enlarging the diameters of the outer tube and the inner tube in order to strengthen the rigidity of the damper and increase the bending resistance. However, this method is not significant for increasing rigidity and bending resistance, and thus improvements are needed.
Disclosure of Invention
The invention aims to solve one of the technical problems existing in the prior art.
The application provides a vapour rubs bumper shock absorber inner tube, include:
and the sleeve body is made of 26MnB5 steel.
The 26MnB5 steel is prepared from the following raw materials in parts by weight: 0.25-3 parts by weight of carbon element, 0.26-3.2 parts by weight of silicon element, 1.3-1.4 parts by weight of manganese element, 0.012-0.2 part by weight of phosphorus element, 0.002-0.006 part by weight of sulfur element, 0.0018-0.0024 part by weight of boron element, 0.12-0.16 part by weight of chromium element, 0.02-0.04 part by weight of aluminum element, 0.03-0.05 part by weight of titanium element and 0.04-0.06 part by weight of copper element.
The weight parts of the carbon element, the silicon element, the manganese element, the phosphorus element, the sulfur element, the boron element, the chromium element, the aluminum element, the titanium element and the copper element are respectively 0.27, 0.28, 1.36, 0.016, 0.004, 0.0022, 0.14, 0.03, 0.04 and 0.05.
The sleeve body includes:
a seamless steel pipe;
and the oil passing hole is arranged at one end of the seamless steel pipe.
The oil passing holes are 1-2 pairs. .
The invention also discloses a preparation process of the inner tube of the steam friction shock absorber, which is characterized by comprising the following steps:
s1, manually inspecting the steel pipe raw material;
s2, cutting off the steel pipe raw material to obtain a blank;
s3, heating the blank by adopting an automatic temperature control intermediate frequency heating furnace, wherein the heating temperature is 1050-1150 ℃, and the temperature is kept for 30-40min;
s4, perforating the heated tube blank, and heading the tube blank by using a heading machine;
s5, performing pierced billet inspection on the rough blank after the head is taken;
s6, carrying out acid washing, phosphating, inspection polishing and lubrication on the blank subjected to the pierced billet inspection, wherein the acid washing solution is 10-15% sulfuric acid solution;
s7, performing first cold drawing on the lubricated blank subjected to the step S6 through a cold drawing machine, wherein the cold drawing machine has the maximum drawing force: 350-450t;
s8, carrying out acid washing, phosphating and lubrication on the blank subjected to the first cold drawing, wherein the acid washing solution is 10-15% sulfuric acid solution;
s9, performing secondary cold drawing on the blank through a cold drawing machine, wherein the cold drawing machine has the maximum drawing force: 350-450t;
s10, performing heat treatment on the blank subjected to the secondary cold drawing treatment;
s11, carrying out acid washing, phosphating and lubrication on the annealed blank;
s12, performing third cold drawing on the blank through a cold drawing machine;
s13, lubricating a blank obtained by three times of cold drawing, and then performing a fourth cold drawing by a cold drawing machine;
s14, performing heat treatment on the blank obtained by the four cold drawing steps;
s15, straightening and cutting the blank obtained after the heat treatment;
s16, cutting off the flat head after performing eddy current flaw detection and seamless pipe length inspection on the blank;
s17, performing rust removal, finish rolling, straightening, finish rolling long material inspection, cutting off and deburring, cleaning, heat treatment, oil spraying, rust prevention and finished product inspection, and packaging and warehousing.
Simultaneously discloses a pickling device, its characterized in that includes:
the machine body comprises a pickling chamber, a spin-drying chamber and a storage chamber;
the lifting rack is movably arranged in the pickling chamber and is controlled to lift by a straight actuating mechanism;
the centrifugal drying device is used for removing pickling liquid on the surface of the pickled steel pipe rough blank;
and the unloading mechanism is used for transferring the steel pipe rough blank from the centrifugal drying device into the storage chamber.
Further comprises:
the feeding hole is communicated with the pickling chamber and the spin-drying chamber;
the feeding cylinder is fixedly arranged at one end of the pickling chamber and corresponds to the feeding hole;
and the pushing pipe sleeve is fixedly arranged at the telescopic end of the feeding cylinder.
The centrifugal drying device comprises:
the rotary machine case is movably arranged in the spin-drying chamber and is controlled to rotate by a rotary driving mechanism;
the rotating shaft is rotatably arranged in the rotating machine box, one end of the rotating shaft extends out of the rotating machine box, and the other end of the rotating shaft is connected with a stepping motor in a transmission way;
a locking mechanism mounted on the rotation shaft for fixing the steel pipe blank;
a pushing mechanism for pushing the steel pipe rough blank to the unloading mechanism;
wherein, the rotation axis of the rotary case is transversely vertical to the placement groove.
The centrifugal drying device further includes:
the liquid scraping gasket is fixedly arranged at the bottom end of the rotating shaft through a fastener;
the diameter of the outer wall of the liquid scraping gasket is matched with the diameter of the inner wall of the steel pipe rough blank, and the liquid scraping gasket is made of corrosion-resistant materials.
The beneficial effects of the invention are as follows:
1. the yield strength of the sleeve formed by 0.26, 0.27, 1.35, 0.014, 0.003, 0.0024, 0.14, 0.03, 0.04 and 0.04 carbon element, silicon element, manganese element, phosphorus element, sulfur element, boron element, chromium element, aluminum element, titanium element and copper element reaches more than or equal to 1250Mpa.
2. The sleeve body 1 prepared by adopting cold drawing, heat treatment, straighter process and the like has good mechanical property, rotational deformation resistance and wear resistance;
3. through the arrangement of the machine body provided with the pickling chamber, the spin-drying chamber and the storage chamber, the lifting rack, the centrifugal spin-drying device and the unloading machine 5, the pickled steel pipe rough blank is pickled, sulfuric acid solution on the surface of the steel pipe rough blank is quickly separated, and the steel pipe rough blank is stored in the storage chamber through the unloading mechanism, so that the steel pipe rough blank can quickly enter the following phosphating operation, and the recovery treatment of the sulfuric acid solution is facilitated;
4. through the setting of pay-off hole, feeding cylinder, pushing tube cover, rotating machine case, rotary driving mechanism, rotation axis, step motor, locking mechanism, pushing mechanism and scraping liquid gasket, send into discharge mechanism after clear away the sulfuric acid solution of steel pipe rough blank surface and internal surface, make the sulfuric acid solution on the surface of steel pipe rough blank and the internal surface cleared up fast.
Drawings
FIG. 1 is a schematic view of the structure of an inner tube of a vapor-damping shock absorber according to an embodiment of the present application;
FIG. 2 is a flow chart of a process for preparing an inner tube of a vapor-friction damper according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a specific structure of a pickling device in an embodiment of the present application;
FIG. 4 is a top view of an acid wash apparatus according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a lifting rack in an embodiment of the present application;
FIG. 6 is a schematic view of a partial enlarged structure at A in an embodiment of the present application;
FIG. 7 is a schematic view of the internal structure of a rotary machine case according to an embodiment of the present application;
FIG. 8 is a schematic view of a partial enlarged structure at B in an embodiment of the present application;
fig. 9 is a schematic view of a partial enlarged structure at C in an embodiment of the present application.
Reference numerals
1-sleeve body, 101-seamless steel tube, 102-oil passing hole, 201-machine body, 202-pickling chamber, 203-spin-drying chamber, 204-storage chamber, 205-straight actuating mechanism, 3-lifting rack, 301-rack, 302-placing groove, 303-feeding hole, 304-feeding cylinder, 305-pushing sleeve, 4-centrifugal spin-drying device, 401-rotary case, 402-rotary shaft, 403-stepping motor, 404-scraping pad, 405-fastener, 406-driving sleeve, 407-conical driving gear, 408-conical driving gear, 5-unloading mechanism, 501-discharging hole, 502-cylinder rack, 503-bearing plate, 504-pushing cylinder, 505-feeding roller 506-feeding motor I, 507-supporting plate, 508-guiding roller, 509-feeding motor II, 510-bearing table, 511-turning frame, 512-transferring groove, 513-supporting column, 514-lifting cylinder, 515-guiding rod, 516-linkage supporting rod, 6-pushing mechanism, 601-pushing sleeve, 602-driving groove, 603-driving slide block, 604-fixing frame, 605-moving frame, 7-locking mechanism, 701-lifting hole, 702-lifting shaft, 8-lifting driving mechanism, 801-driving gear, 802-driving tooth set, 803-driving gear, 804-lifting sliding groove, 805-lifting driving rack, 806-compression spring, 807-gear shaft, 808-rotating shaft, 809-avoiding section, 9-telescoping piece, 901-spout, 902-intercommunication groove, 903-sliding block, 903 a-sliding block, 903 b-telescoping portion, 904-reset spring one, 905-spacing groove, 906-friction pad, 10-reciprocating drive mechanism, 1001-linkage gear, 1002-sideslip sliding groove, 1003-sideslip drive rack, 1004-servomotor one, 1005-carousel, 1006-linkage swing arm, 1007-reset groove, 1008-through groove, 1009-reset rack, 1009 a-fixed portion, 1009 b-limiting portion, 1010-reset spring two, 11-rotary drive mechanism, 1101-rack, 1102-rotary column, 1103-rotary groove, 1104-servomotor two.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The server provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings by means of specific embodiments and application scenarios thereof.
Example 1:
as shown in fig. 1 and 2, an embodiment of the present application provides a vapor damping damper inner tube including a sleeve body 1 made of 26MnB5 steel.
The 26MnB5 steel is prepared from the following raw materials in parts by weight: 0.25-3 parts by weight of carbon element, 0.26-3.2 parts by weight of silicon element, 1.3-1.4 parts by weight of manganese element, 0.012-0.2 part by weight of phosphorus element, 0.002-0.006 part by weight of sulfur element, 0.0018-0.0024 part by weight of boron element, 0.12-0.16 part by weight of chromium element, 0.02-0.04 part by weight of aluminum element, 0.03-0.05 part by weight of titanium element and 0.04-0.06 part by weight of copper element.
Preferably, the carbon element, silicon element, manganese element, phosphorus element, sulfur element, boron element, chromium element, aluminum element, titanium element and copper element are respectively 0.27, 0.28, 1.36, 0.016, 0.004, 0.0022, 0.14, 0.03, 0.04 and 0.05 in parts by weight.
Further, the sleeve body 1 includes a seamless steel pipe 101; and an oil passing hole 102 provided at one end of the seamless steel pipe 101.
The oil passing holes 102 are 1-2 pairs. .
A preparation process suitable for the inner tube of the steam friction shock absorber comprises the following steps:
s1, manually inspecting the steel pipe raw material;
s2, cutting off the steel pipe raw material to obtain a blank;
s3, heating the blank by adopting an automatic temperature control intermediate frequency heating furnace, wherein the heating temperature is 1050-1150 ℃, and the temperature is kept for 30-40min;
s4, perforating the heated tube blank, and heading the tube blank by using a heading machine;
s5, performing pierced billet inspection on the rough blank after the head is taken;
s6, carrying out acid washing, phosphating, inspection polishing and lubrication on the blank subjected to the pierced billet inspection, wherein the acid washing solution is 10-15% sulfuric acid solution;
s7, performing first cold drawing on the lubricated blank subjected to the step S6 through a cold drawing machine, wherein the cold drawing machine has the maximum drawing force: 350-450t;
s8, carrying out acid washing, phosphating and lubrication on the blank subjected to the first cold drawing, wherein the acid washing solution is 10-15% sulfuric acid solution;
s9, performing secondary cold drawing on the blank through a cold drawing machine, wherein the cold drawing machine has the maximum drawing force: 350-450t;
s10, performing heat treatment on the blank subjected to the secondary cold drawing treatment;
s11, carrying out acid washing, phosphating and lubrication on the annealed blank;
s12, performing third cold drawing on the blank through a cold drawing machine;
s13, lubricating a blank obtained by three times of cold drawing, and then performing a fourth cold drawing by a cold drawing machine;
s14, performing heat treatment on the blank obtained by the four cold drawing steps;
s15, straightening and cutting the blank obtained after the heat treatment;
s16, cutting off the flat head after performing eddy current flaw detection and seamless pipe length inspection on the blank;
s17, performing rust removal, finish rolling, straightening, finish rolling long material inspection, cutting off and deburring, cleaning, heat treatment, oil spraying, rust prevention and finished product inspection, and packaging and warehousing.
In this embodiment of the present application, the above-described process is adoptedThe prepared sleeve body 1 has tensile strength more than or equal to 1400Mpa, yield strength more than or equal to 1250Mpa, elongation rate 11% -16%, wall thickness of 1.5mm, light weight, and performance improved by about 50% compared with the existing inner tube, and the same is adopted
Figure BDA0003838821550000071
Compared with the prior inner tube of the steam friction damper, the weight can be reduced by 35 percent, and the sleeve body 1 prepared by adopting cold drawing, heat treatment, straighter and other processes has good mechanical property, rotational deformation resistance and wear resistance.
Example 2:
as shown in fig. 3 to 5, in the present embodiment, there is also disclosed a pickling apparatus including a body 201 including a pickling chamber 202, a spin-drying chamber 203, and a storage chamber 204; a lifting rack 3 movably installed in the pickling chamber 202 and controlled to lift by a straight-moving actuating mechanism 205; the centrifugal drying device 4 is used for removing pickling liquid on the surface of the pickled steel pipe rough blank; and a discharging mechanism 5 for transferring the steel pipe blanks from the centrifugal drying device 4 into the storage chamber 204.
Further, the lifting rack 3 includes a rack body 301; the plurality of placing grooves 302 penetrate through the frame 301, are arranged at intervals along the vertical direction and extend parallel to the spin-drying chamber 203, and each placing groove 302 is obliquely arranged.
Further, the pickling device also comprises a feeding hole 303 which is communicated with the pickling chamber 202 and the spin-drying chamber 203; a feeding cylinder 304 fixedly installed at one end of the pickling chamber 202, corresponding to the feeding hole 303; the pushing tube housing 305 is fixedly mounted at the telescopic end of the feeding cylinder 304.
In this embodiment of the present application, since the above-mentioned structure is adopted, the worker places the steel pipe blanks in each of the placement grooves 302, the placement frame is controlled by the straight-moving actuating mechanism 205 (which is one of a cylinder, a hydraulic cylinder, or an electric telescopic rod) to descend in the pickling chamber 202, the steel pipe blanks are immersed in the sulfuric acid solution in the pickling chamber 202 to be pickled, after pickling is completed, the straight-moving actuating mechanism 205 controls the lifting placement frame 3 to lift, the lower end of the uppermost placement groove 302 corresponds to the feeding cylinder 304, the straight-moving actuating mechanism 205 stops operating, the telescopic end of the feeding cylinder 304 extends, the pushing sleeve 305 pushes the steel pipe blanks located at the lower end of the corresponding placement groove 302 toward the centrifugal spin-drying device 4, the steel pipe blanks enter the spin-drying chamber 203 after passing through the feeding hole 303, the steel pipe rough blank in the placing groove 302 rolls towards the lower end of the placing groove 302 under the action of gravity, the centrifugal drying device 4 simultaneously operates to enable the steel pipe rough blank to rotate, the generated centrifugal force enables sulfuric acid solution on the surface of the steel pipe rough blank to be separated from the outer surface of the steel pipe rough blank, the sulfuric acid solution on the surface of the steel pipe rough blank is thrown onto the inner side wall of the drying chamber 203 by the centrifugal force and collected at the bottom of the inner cavity of the drying chamber 203 under the action of gravity, centralized treatment is facilitated, and after the sulfuric acid solution on the surface of the steel pipe is removed, the steel pipe rough blank is conveyed into the storage chamber 204 by the unloading mechanism 5 to be stored, so that the steel pipe rough blank is convenient for workers to take;
in the preferred embodiment, when the steel pipe blanks in the placement groove 302 above the lifting placement frame 3 enter the spin-drying chamber 203 through the feeding hole 303, and the telescopic end of the feeding cylinder 304 is retracted, the material pushing sleeve moves to the side of the placement groove 302 away from the feeding hole 303, the straight actuating mechanism 205 operates, so that the lifting placement frame 3 is lifted until the next placement groove 302 storing the steel pipe blanks moves between the feeding cylinder 304 and the feeding hole 303, and the straight actuating mechanism 205 stops operating.
Example 3:
as shown in fig. 7, in this embodiment, in addition to including the structural features of the foregoing embodiments, the spin-drying apparatus 4 includes a spin cabinet 401 movably installed in a spin-drying chamber 203, the rotation of which is controlled by a rotation driving mechanism 11; a rotating shaft 402 rotatably installed in the rotating housing 401, one end of which extends out of the rotating housing 401, and the other end of which is connected with a stepping motor 403 in a transmission manner; a locking mechanism 7 mounted on the rotation shaft 402 for fixing the steel pipe blank; and a pushing mechanism 6 for pushing the steel pipe blank toward the unloading mechanism 5, wherein a rotation shaft 402 of the rotary housing 401 is perpendicular to the placement groove 302 in the lateral direction.
Further, the centrifugal drying device 4 further comprises a scraping washer 404 fixedly installed at the bottom end of the rotating shaft 402 through a fastener 405, the diameter of the outer wall of the scraping washer 404 is matched with the diameter of the inner wall of the steel pipe rough blank, and the scraping washer 404 is made of corrosion-resistant materials.
Further, the centrifugal drying device 4 further comprises a driving shaft sleeve 406 rotatably installed at the bottom end of the rotary case 401 through a bearing; a conical driven gear 407 fixedly mounted at the inner end of the outdrive 406; a conical drive gear 408 fixedly mounted on the output shaft of the stepper motor 403 in driving connection with the conical driven gear 407.
In this embodiment of the present application, since the above-mentioned structure is adopted, when the steel pipe blank which is not cleaned up with sulfuric acid solution is to be received, the rotary driving mechanism 11 is operated, the rotary housing 401 is rotated until the bottom end of the rotary shaft 402 corresponds to the feed hole 303, and the rotary shaft 402 is in a coaxial state with the feed hole 303, the rotary driving mechanism 11 stops operating, the steel pipe blank is pushed toward the rotary shaft 402 by the push sleeve 305 under the action of the feed cylinder 304, after passing through the feed hole 303, one end inner wall of the steel pipe blank is in contact with the liquid scraping gasket 404, one end of the steel pipe blank, which is far from the push sleeve 305, is sleeved outside the liquid scraping gasket 404, and as the feed cylinder 304 continues to operate, the steel pipe blank is sleeved on the rotary shaft 402 and moves toward the rotary housing 401, in this process, the sulfuric acid solution on the inner wall of the steel pipe blank is blocked by the liquid scraping gasket 404 and flows out from the interior of the steel pipe blank, the steel pipe rough blank is gathered at the bottom of the inner cavity of the spin-drying chamber 203 until one end of the steel pipe rough blank far away from the rotary machine box 401 is separated from contact with the liquid scraping gasket 404, the output end of the straight cylinder is retracted, meanwhile, the locking mechanism 7 operates, the rotary driving mechanism 11 operates, the rotary machine box 401 rotates until the rotary shaft 402 is positioned at a position vertical to the bottom surface of the inner cavity of the spin-drying chamber 203, the rotary mechanism stops operating, the stepping motor 403 operates, the output shaft of the stepping motor drives the conical driving gear 408, the conical driven gear 407 and the transmission shaft sleeve 406 to act, the rotary shaft 402 and the steel pipe rough blank on the rotary shaft 402 rotate, centrifugal force is generated, after the sulfuric acid solution on the outer surface of the steel pipe rough blank is removed, the stepping motor 403 stops operating, the rotary driving mechanism 11 operates, the rotary machine box 401 rotates, the free end of the rotary shaft 402 is close to the unloading mechanism 5 until the free end of the rotary shaft 402 corresponds to the unloading mechanism 5, the rotating shaft 402 is in a horizontal state, the rotary driving mechanism 11 stops running, the locking mechanism 7 runs, the fixation of the steel pipe rough blank is relieved, the pushing mechanism 6 runs, the steel pipe rough blank is pushed to move towards the unloading mechanism 5 until the steel pipe rough blank is far away from the end of the rotating machine box 401 and runs with the unloading mechanism 5, the unloading mechanism 5 takes the cleaned steel pipe rough blank off the rotating shaft 402 and transfers the cleaned steel pipe rough blank into the inner cavity of the storage chamber 204, the pushing mechanism 6 resets, the rotary driving mechanism 11 runs, the rotating machine box 401 rotates, the free end of the rotating shaft 402 moves towards the discharging hole 501, and the next material receiving is waited.
Example 4:
as shown in fig. 7 and 9, in this embodiment, in addition to including the structural features of the foregoing embodiment, the lock mechanism 7 includes a lifting hole 701 which communicates with both ends of the rotation shaft 402; a lifting shaft 702 movably installed in the lifting hole 701, and having an outer wall slidably engaged with an inner wall of the lifting hole 701; the lifting driving mechanism 8 is in transmission connection with the top end of the lifting shaft 702 and is used for controlling the lifting shaft 702 to lift; and the telescopic pieces 9 are matched with the bottom end of the lifting shaft 702, the inner wall of the steel pipe rough blank is fixed when the bottom end of the lifting shaft 702 descends, and the steel pipe rough blank is released from being fixed when the bottom end of the lifting shaft 702 ascends.
Further, the telescopic member 9 includes a chute 901 disposed at the bottom end of the lifting hole 701; a communicating groove 902 communicating the inner end of the chute 901 and the outer wall of the lifting shaft 702; a slider 903 including a sliding portion 903a and a telescopic portion 903b slidably engaged with the chute 901 and the communication groove 902, respectively; a return spring one 904 provided between the sliding portion 903a and the inner end surface of the chute 901; and a stopper groove 905 provided at the outer end of the expansion and contraction portion 903b, for abutting against the end of the steel pipe blank, and the sliding portion 903a is inclined away from the end of the expansion and contraction portion 903 b.
Further, the telescoping member 9 further includes a friction pad 906 disposed in the limit groove 905.
In this embodiment of the present application, since the above-described structure is adopted, when the steel pipe blank sleeved on the rotation shaft 402 needs to be fixed, the lifting driving mechanism 8 is operated to make the lifting shaft 702 descend in the lifting hole 701, the bottom end of the lifting shaft 702 abuts against the inclined end face of the sliding portion 903a, as the lifting shaft 702 continues to descend, the sliding portion 903a and the telescopic portion 903b slide toward the inner wall of the steel pipe blank in the chute 901 and the communicating groove 902, the first return spring 904 is compressed and shortened, elastic potential energy is stored, the limiting groove 905 at the outer end of the telescopic portion 903b approaches the inner wall of the steel pipe blank until the inner wall of the steel pipe blank and the end face far from the end of the rotation case 401 are both in contact with the surface of the friction pad 906, and the lifting driving mechanism 8 stops operating, thereby completing the fixing of the steel pipe blank;
when it is necessary to release the fixation of the steel pipe blank fitted around the rotation shaft 402, the lifting drive mechanism 8 is operated to raise the lifting shaft 702 in the lifting hole 701, and as the lifting shaft 702 continues to rise, the first return spring 904 releases elastic potential energy to push the sliding portion 903a and the expansion portion 903b to slide in the sliding groove 901 and the communicating groove 902 in a direction away from the steel pipe blank, and the limit groove 905 at the outer end of the expansion portion 903b is away from the inner wall of the steel pipe blank until the limit groove 905 on the expansion portion 903b is retracted into the communicating groove 902, thereby releasing the fixation of the steel pipe blank.
Example 5:
as shown in fig. 7, in this embodiment, in addition to including the structural features of the foregoing embodiments, the pushing mechanism 6 includes a pushing sleeve 601 that is sleeved between the rotating shaft 402 and the outdrive 406; the transmission grooves 602 are arranged on the inner wall and the outer wall of the pushing sleeve 601 at intervals and are axially parallel to the pushing sleeve 601; a plurality of transmission sliding blocks 603 which are arranged on the outer wall of the rotating shaft 402 and the inner wall of the transmission sleeve at intervals and are respectively in sliding fit with the transmission grooves 602; the fixed frame 604 is fixedly arranged in the inner cavity of the rotary case 401 and is in running fit with the rotary shaft 402 through a bearing; the movable frame 605 is sleeved outside the rotating shaft 402, is in clearance fit with the rotating shaft 402, the top end of the pushing sleeve 601 is rotatably connected with the movable frame 605, the movable frame 605 is in transmission fit with the lifting driving mechanism 8, and the movement of the movable frame 605 is controlled by the lifting driving mechanism 8.
In this embodiment of the present application, because the above-mentioned structure is adopted, the free end of the rotating shaft 402 corresponds to the unloading mechanism 5, when the rotating shaft is in a horizontal state and the locking mechanism 7 releases the fixation of the steel pipe blank, the lifting mechanism continues to operate, the moving frame 605 is driven to move in the direction approaching the stepper motor 403 in the inner cavity of the rotating case 401, the outer end of the pushing sleeve 601 moves towards the unloading mechanism 5, the steel pipe blank sleeved on the rotating shaft 402 is pushed to move towards the unloading mechanism 5 until the steel pipe blank moves away from the rotating case 401 end to the operation range of the unloading mechanism 5, the lifting mechanism controls the driving frame to move in the direction away from the stepper motor 403, the pushing sleeve 601 moves towards the inner cavity of the rotating case 401, the unloading mechanism 5 operates, the cleaned steel pipe blank is moved away from the rotating shaft 402, and the cleaned steel pipe blank is transferred into the storage chamber 204 by the unloading mechanism 5;
in a preferred embodiment, when the driving shaft sleeve 406 rotates, the pushing sleeve 601 and the rotating shaft 402 rotate together with the driving shaft sleeve 406 under the cooperation of each driving groove 602 and the driving sliding block 603, and when the pushing sleeve 601 moves relative to the rotating case 401, each driving sliding block 603 slides in the corresponding driving groove 602.
Example 6:
as shown in fig. 7 and 8, in this embodiment, in addition to including the structural features of the foregoing embodiment, the lifting drive mechanism 8 includes a drive gear 801 movably mounted in the inner cavity of the rotary casing 401 via a rotation shaft 808; a reciprocating drive mechanism 10 for driving the rotation shaft 402 to reciprocally rotate about an axial direction; the transmission gear group 802 is integrally formed on the outer wall of the movable frame 605 and is in transmission connection with the driving gear 801 through a transmission gear 803; a lifting slide groove 804 provided on the top outer wall of the lifting shaft 702; a lifting drive rack 805 slidably mounted in the lifting slide groove 804; a compression spring 806 provided in the lifting slide groove 804, both ends of which are abutted with the lifting slide groove 804 and the lifting drive rack 805 away from the end of the moving frame 605; and a gear set 807 for driving the lifting drive rack 805 to be connected with the driving gear 801, wherein a avoiding section 809 without a gear is arranged on the peripheral wall of the driving gear 801.
Further, the reciprocating drive mechanism 10 includes a linkage gear 1001 mounted at the outer end of a rotation shaft 808; a traverse slide groove 1002 provided on the outer wall of the rotary casing 401; a traversing gear rack 1003 slidably mounted in the traversing slide groove 1002 and in driving connection with the linkage gear 1001; the first servo motor 1004 is fixedly arranged in the inner cavity of the rotary machine box 401, and the output shaft movably penetrates through the side wall of the rotary machine box 401 to extend out; a turntable 1005 fixedly installed at the outer end of the output shaft of the first servo motor 1004; the two ends of the linkage swing arm 1006 are hinged with the eccentric part of the turntable 1005 and one end of the transverse movement transmission rack 1003 respectively.
Further, the reciprocating drive mechanism 10 further includes a reset groove 1007 provided on the moving frame 605; a through groove 1008 communicating one end of the return groove 1007 with an end surface of the moving rack 605 remote from the pushing sleeve 402; a reset frame 1009, which comprises a fixing part 1009a with one end fixedly arranged on the fixing frame 604 and the middle part slidingly matched with the through groove 1008, and a limiting part 1009b fixedly arranged at the free end of the fixing part 1009 a; and a second return spring 1010 which is fitted over the outer side of the fixed portion 1009a, and both ends of which are respectively abutted against the restricting portion 1009b and the end of the return groove 1007 remote from the pushing sleeve 402.
Further, the rotary driving mechanism 11 includes a frame 1101 fixedly installed on a side wall of the rotary casing 401 provided with a lateral sliding groove 1002; a pair of rotating grooves 1103 respectively provided on opposite side inner walls of the spin-drying chamber 203; a pair of rotary posts 1102 fixedly mounted on the outer wall of the frame 1101 and the outer wall of the rotary cabinet 401, respectively; and a second servo motor 1104, which is fixedly installed on the machine body 201, wherein an output shaft of the second servo motor is in transmission connection with one of the rotating columns 1102 in a gear transmission manner, the pair of rotating columns 1102 are coaxially arranged, and free ends of the second servo motor are respectively in running fit with the rotating grooves 1103.
In this embodiment of the present application, because the above structure is adopted, when the steel pipe rough blank which is not centrifugally cleaned is sleeved on the rotating shaft 402, the first servo motor 1004 operates, the end surface of the moving frame 605 away from the pushing sleeve 402 is abutted against the outer wall of the fixed frame 604, the turntable 1005 rotates anticlockwise, the linkage swing arm 1006 simultaneously acts, the traversing transmission rack 1003 is pushed to move towards the linkage gear 1001 in the traversing sliding groove 1002, the linkage gear 1001, the rotating shaft 402, the driving gear 801 and the lifting transmission rack 805 simultaneously act, the bottom end of the lifting transmission rack 805 is abutted against the bottom end of the lifting transmission groove 602, the lifting shaft 702 is driven to descend in the lifting hole 701 until the outer end of the telescopic piece 9 is fixed with the steel pipe rough blank, and the first servo motor 1004 stops operating, in this process, the avoidance section 809 on the driving gear 801 corresponds to the transmission gear 803, and the transmission gear 803 is in a non-transmission state;
when the cleaned steel pipe rough blank needs to be moved to the unloading mechanism 5, a first servo motor 1004 operates, a turntable 1005 rotates clockwise, a linkage swing arm 1006 simultaneously acts to push a transverse moving transmission rack 1003 to move away from the linkage gear 1001 in a transverse moving sliding groove 1002, so that the linkage gear 1001, a rotating shaft 402, a driving gear 801 and a lifting transmission rack 805 simultaneously act, the bottom end of the lifting transmission rack 805 is abutted to the bottom end of the lifting transmission groove 602, the lifting transmission rack 805 rises in the lifting transmission groove 602, a compression spring 806 has a pre-loading force to push a lifting shaft 702 to rise in a lifting hole 701 until a telescopic piece 9 is released from fixing the steel pipe rough blank, the first servo motor 1004 continuously operates, a avoidance section 809 on the outer wall of the driving gear 801 is separated from the transmission gear 803, the driving gear 801 is connected with the transmission gear, the top end of the lifting shaft 702 is abutted to the inner wall of the rotary case 601 along with the continuous operation of the first servo motor 1004, the compression spring 806 is compressed, the transmission gear 803, a transmission gear group 605 and a moving frame 605 simultaneously act on the bottom end of the lifting transmission rack 602, the lifting frame 605 and the pushing sleeve 601 rise in the lifting transmission groove 602, the lifting transmission shaft 702 has a pre-loading force, the lifting shaft 702 is pushed to rise in the lifting hole 701 until the telescopic piece 9 releases the fixing of the steel pipe rough blank, the servo motor 1004 continuously operates, the first servo motor 1004 continues to move along with the continuous operation of the driving gear 803, and the driving gear 803 is stopped, the lifting section 809 is separated from the driving gear 803 along with the driving gear blank, along with the continuous operation of the driving gear is continuously, and the driving gear is driven by the driving gear, and the driving gear is driven by the driving gear, along with the driving gear is driven, along with the continuous operation, and the continuous operation is continuously, and is continuously;
in a preferred embodiment, when the rotating housing 401 needs to be rotated, the second servo motor 1104 operates to drive the rotating column 1102 and the rotating housing 401 to synchronously operate by gear transmission, so as to rotate the rotating housing 401.
Example 7:
as shown in fig. 3 and 4, in this embodiment, in addition to including the structural features of the foregoing embodiments, the discharging mechanism 5 includes a discharging hole 501 provided on the body 201, communicating the spin-drying chamber 203 and the storage chamber 204; a pair of cylinder frames 502 fixedly installed at the top of the frame 1101 and positioned at both sides of one end of the spin-drying chamber 203 far from the pickling chamber 202; a pair of bearing plates 503 movably installed between the pair of cylinder frames 502; a pair of pushing cylinders 504 respectively fixed to each cylinder frame 502 for driving a pair of carrying plates 503 to approach each other or to separate from each other; a pair of feed rollers 505 rotatably mounted on the bottom surface of each carrier plate 503 at the end far from the pushing cylinder 504; and a first feeding motor 506 for driving one of the feeding rollers 505 to rotate, wherein the feeding rollers 505 are vertically arranged and the middle part of the peripheral wall is recessed, and the pair of feeding rollers 505 are positioned at two sides of the discharging hole 501.
Further, the unloading mechanism 5 further comprises a support plate 507 fixedly installed on the machine body 201, corresponding to the discharging hole 501, and extending towards the storage chamber 204; a pair of guide rollers 508 rotatably installed on the bottom surface of the support plate 507 and located at both sides of the discharge hole 501; and a feeding motor II 509 for driving one of the guide rollers 508 to rotate, wherein the guide roller 508 is vertically arranged and the bottom of the peripheral wall is recessed.
Further, the unloading mechanism 5 further comprises a carrying table 510 fixedly mounted on the machine body 201 and located below the discharging hole 501, and a section of the carrying table extends into the storage chamber 204; a roll-over stand 511 movably mounted on the carrying table 510 through a pair of support posts 513; a transfer groove 512 provided at the top of the roll-over stand 511, communicating with the roll-over stand 511 toward the discharge hole 501 and the side wall of the storage chamber 204; a lifting cylinder 514 fixedly mounted on the carrying table 510, the telescopic end of which is connected with the bottom surface of the roll-over stand 511 near the storage chamber 204 side through a linkage strut 516; one end of each guide rod 515 is fixedly connected with the bearing table 510, the other end of each guide rod extends into the inner cavity of the storage chamber 204 in an inclined manner, the guide rods are fixedly connected with the bottom surface of the inner cavity of the storage chamber 204, the top ends of the support posts 513 are respectively hinged with the two ends of the bottom surface of the roll-over stand 511, which are far away from the side of the storage chamber 204, and the two ends of the linkage support rod 516 are respectively hinged with the telescopic ends of the lifting air cylinders 514 and the side of the bottom surface of the roll-over stand 511, which is far away from the support posts 513.
In this embodiment of the present application, because the above-described structure is adopted, when the cleaned steel pipe blank is pushed between the pair of feed rollers 505 by the push sleeve 601, the pair of push cylinders 504 are operated, the telescopic ends are extended, the pair of carrying plates 503 are close to each other, the adjacent ends are abutted, the cleaned steel pipe blank is held in the recesses in the middle of the pair of feed rollers 505 away from the two sides of the end of the rotating case 401, then the first feed motor 506 and the second feed motor 509 are operated simultaneously, the pair of guide rollers 508 are also rotated, the cleaned steel pipe blank is made to pass through the discharge holes 501 at the end of the rotating case 401, and move into the transfer groove 512 until one end of the steel pipe blank is abutted with the inner end surface of the transfer groove 512, the other end is separated from the discharge holes 501, the first feed motor 506 and the second feed motor 509 are stopped to operate, the pair of push cylinders 504 are retracted, the pair of carrying plates 503 are separated from each other, and wait for the next material receiving, simultaneously, the telescopic ends of the lifting cylinders 514 are lowered, the linkage strut 516 and the turnover frame 511 are synchronously operated, and the turnover frame 511 is tilted around the top of the pair of struts 513 toward the storage chamber 204, so that the cleaned steel pipe blank is made to roll out of the pair of guide rollers 512 and pass through the pair of guide rollers 515, and roll out of the guide rollers 512.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (5)

1. A vapor-operated shock absorber inner tube, comprising:
a sleeve body (1) made of 26MnB5 steel;
the 26MnB5 steel is prepared from the following raw materials in parts by weight: the weight parts of the carbon element, the silicon element, the manganese element, the phosphorus element, the sulfur element, the boron element, the chromium element, the aluminum element, the titanium element and the copper element are respectively 0.27, 0.28, 1.36, 0.016, 0.004, 0.0022, 0.14, 0.03, 0.04 and 0.05;
the sleeve body (1) comprises:
a seamless steel pipe (101);
an oil passing hole (102) provided at one end of the seamless steel pipe (101);
the oil passing holes (102) are 1-2 pairs;
the preparation process of the inner tube of the steam friction damper comprises the following steps:
s1, manually inspecting the steel pipe raw material;
s2, cutting off the steel pipe raw material to obtain a blank;
s3, heating the blank by adopting an automatic temperature control intermediate frequency heating furnace, wherein the heating temperature is 1050-1150 ℃, and the temperature is kept for 30-40min;
s4, perforating the heated tube blank, and heading the tube blank by using a heading machine;
s5, performing pierced billet inspection on the rough blank after the head is taken;
s6, carrying out acid washing, phosphating, inspection polishing and lubrication on the blank subjected to the pierced billet inspection, wherein the acid washing solution is 10-15% sulfuric acid solution;
s7, performing first cold drawing on the lubricated blank subjected to the step S6 through a cold drawing machine, wherein the cold drawing machine has the maximum drawing force: 350-450t;
s8, carrying out acid washing, phosphating and lubrication on the blank subjected to the first cold drawing, wherein the acid washing solution is 10-15% sulfuric acid solution;
s9, performing secondary cold drawing on the blank through a cold drawing machine, wherein the cold drawing machine has the maximum drawing force: 350-450t;
s10, performing heat treatment on the blank subjected to the secondary cold drawing treatment;
s11, carrying out acid washing, phosphating and lubrication on the annealed blank;
s12, performing third cold drawing on the blank through a cold drawing machine;
s13, lubricating a blank obtained by three times of cold drawing, and then performing a fourth cold drawing by a cold drawing machine;
s14, performing heat treatment on the blank obtained by the four cold drawing steps;
s15, straightening and cutting the blank obtained after the heat treatment;
s16, cutting off the flat head after performing eddy current flaw detection and seamless pipe length inspection on the blank;
s17, performing rust removal, finish rolling, straightening, finish rolling long material inspection, cutting off and deburring, cleaning, heat treatment, oil spraying, rust prevention and finished product inspection, and packaging and warehousing.
2. A pickling device suitable for the process for manufacturing an inner tube of a vapor-friction damper according to claim 1, comprising:
a body (201) comprising a pickling chamber (202), a spin-drying chamber (203) and a storage chamber (204);
a lifting rack (3) which is movably arranged in the pickling chamber (202) and controls the lifting through a straight actuating mechanism (205);
a centrifugal drying device (4) for removing pickling liquid on the surface of the pickled steel pipe rough blank;
and a discharging mechanism (5) for transferring the steel pipe rough blank from the centrifugal drying device (4) into a storage chamber (204).
3. A pickling device adapted to claim 2, further comprising:
a feeding hole (303) which is communicated with the pickling chamber (202) and the spin-drying chamber (203);
the feeding cylinder (304) is fixedly arranged at one end of the pickling chamber (202) and corresponds to the feeding hole (303);
and the pushing pipe sleeve (305) is fixedly arranged at the telescopic end of the feeding cylinder (304).
4. Pickling device adapted to claim 2, characterized in that the centrifugal drying device (4) comprises:
a rotary machine box (401) movably installed in the spin-drying chamber (203) and controlled to rotate by a rotary driving mechanism (11);
a rotating shaft (402) rotatably installed in the rotating case (401), one end of which extends out of the rotating case (401), and the other end of which is connected with a stepping motor (403) in a transmission manner;
a locking mechanism (7) mounted on the rotating shaft (402) for fixing the steel pipe blank;
a pushing mechanism (6) for pushing the steel pipe blank toward the unloading mechanism (5);
wherein, the rotation axis (402) of the rotary case (401) is transversely vertical to the placement groove (302).
5. Pickling device adapted to claim 4, characterized in that the centrifugal drying device (4) further comprises:
the liquid scraping gasket (404) is fixedly arranged at the bottom end of the rotating shaft (402) through a fastener (405);
the diameter of the outer wall of the liquid scraping gasket (404) is matched with the diameter of the inner wall of the steel pipe rough blank, and the liquid scraping gasket (404) is made of a corrosion-resistant material.
CN202211097480.9A 2022-09-08 2022-09-08 Inner tube of steam friction damper and preparation process thereof Active CN115572894B (en)

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Application Number Priority Date Filing Date Title
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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT377585B (en) * 1983-10-21 1985-04-10 Supervis Ets TUBULAR HOUSING FOR SHOCK ABSORBER, IN PARTICULAR TELESCOPIC VIBRATION DAMPER
JPH09295038A (en) * 1996-05-08 1997-11-18 Sumitomo Metal Ind Ltd Method for cold-drawing carbon steel pipe and production thereof
JP2002273513A (en) * 2001-03-16 2002-09-25 Maruichi Steel Tube Ltd Method of manufacturing for steel tube for shock absorber or the like
CN104492850B (en) * 2014-12-02 2016-08-17 安徽天大石油管材股份有限公司 A kind of production method of best bright finish steel pipe
CN208281413U (en) * 2018-02-01 2018-12-25 嘉兴小出钢管有限公司 A kind of shock damper Special precision solid drawn tube
CN109648256B (en) * 2018-11-29 2020-09-18 扬州东升汽车零部件股份有限公司 Manufacturing process of high-strength hollow stabilizer bar
CN112626529A (en) * 2020-12-03 2021-04-09 南通申海工业科技有限公司 Method for cleaning inner hole of tubular nut

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