CN103801801A - Process for machining cylinder barrel of oil cylinder - Google Patents

Process for machining cylinder barrel of oil cylinder Download PDF

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Publication number
CN103801801A
CN103801801A CN201310700982.0A CN201310700982A CN103801801A CN 103801801 A CN103801801 A CN 103801801A CN 201310700982 A CN201310700982 A CN 201310700982A CN 103801801 A CN103801801 A CN 103801801A
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CN
China
Prior art keywords
welding
cylinder barrel
layer
cylinder
scraping
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201310700982.0A
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Chinese (zh)
Inventor
李京泉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QINGDAO XINGCHEN MACHINE TOOL Co Ltd
Original Assignee
QINGDAO XINGCHEN MACHINE TOOL Co Ltd
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 QINGDAO XINGCHEN MACHINE TOOL Co Ltd filed Critical QINGDAO XINGCHEN MACHINE TOOL Co Ltd
Priority to CN201310700982.0A priority Critical patent/CN103801801A/en
Publication of CN103801801A publication Critical patent/CN103801801A/en
Pending legal-status Critical Current

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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
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
    • B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing 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
    • 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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Arc Welding In General (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The invention discloses a process for machining a cylinder barrel of an oil cylinder, and belongs to the field of hydraulic cylinders. A body of the cylinder barrel is made of Q345B which includes Cr, Nb, Ni, V and other alloy elements, and the mechanical property and the welding property of Q345B are both better than those of 45# steel. The process for machining the cylinder barrel of the oil cylinder includes the steps of selecting a tube blank of a hot rolling steel tube, conducting discharging, conducting straightening, conducting rough cylindrical turning, welding flanges, scraping inner holes, conducting rough turning and conducting finish turning. The process is characterized in that welding parameters are as follows. The process has the advantages that the welding defects of the oil cylinder are reduced by more than 50%, the percentage elongation after fracture of the materials of the cylinder barrel is increased, toughness of the cylinder barrel is guaranteed, the risk that the cylinder barrel is fractured is reduced, and safe reliability of the oil cylinder is greatly improved.

Description

A kind of cylinder tube processing technology
 
Technical field
The invention belongs to construction machinery production field, be specifically related to a kind of cylinder tube, specifically a kind of screw-rolling machine cylinder tube.
?
Background technology
Along with developing rapidly of China's construction machinery industry, intensity, toughness and the welding performance aspect of the machinery such as screw-rolling machine to oil cylinder material requires more and more higher.Domestic mechanical oil cylinder generally adopts 45# steel steel pipe to manufacture, and 45# steel is general structure steel, belongs to medium carbon steel, and because carbon content has increased, welding performance has also just reduced simultaneously.45# steel pipe, because carbon content is high, must carry out the measures such as preheating, postweld heat preservation, post weld heat treatment in welding process, just can eliminate weld defect.In actual production process, due to the restriction of structure and the processing technology of oil cylinder, many times cannot meet these heat treatment requirements, so just inevitably produced more defect in oil cylinder welding position, most faults of oil cylinder all produce in welding position.
 
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, a kind of production technology of the cylinder tube that can improve welding position intensity is provided.
The technical solution adopted for the present invention to solve the technical problems is: idiographic flow is: select hot finished steel pipe pipe → blanking → alignment → rough turn cylindrical → cylinder body and flange welding → scraping endoporus → rough turn → finish turning; The bevel for welding form of described cylinder body and flange welding is U type groove, welding method is gas shielded welding, protective gas composition is 80% Ar+20% CO2, welding wire is selected flux-cored wire ER50-6, gage of wire φ 1.2, welding parameter is as follows: welding current is: ground floor 200-220A, and the second layer and the 3rd layer are 230-250A; Weldingvoltage is: ground floor 20-22V, and the second layer and the 3rd layer are 23-25; Speed of welding is 5-8mm.s-1; Air-flow is 18-25L.min-1; Described scraping endoporus adopts scraping cleaning mill, and scraping working process parameter is: rotating speed 500r/min, feeding 1.0mm, low pressure 32MPa, high pressure 46MPa; The body material of described cylinder barrel is Q345B, its chemical compositions by percentage is: C≤0.2, Si≤0.5, Mn≤1.7, P≤0.035, S≤0.035, Nb≤0.07, V≤0.15, Ti≤0.2, Cr≤0.3, Ni≤0.5, Cu≤0.3, N≤0.012, Mo≤0.1, all the other are Fe.
Compared with prior art, the invention has the beneficial effects as follows: the cylinder tube that adopts new material processing, the weld defect of oil cylinder has reduced more than 50%, and improve the elongation after fracture of cylinder barrel material, guarantee the toughness of cylinder barrel, reduce the danger of cylinder barrel generation brittle fracture, thereby made the security reliability of oil cylinder obtain very large lifting.
The specific embodiment
Below in conjunction with embodiment, the present invention is described further: a kind of cylinder tube, the body material of described cylinder barrel is Q345B, its chemical compositions by percentage is: C≤0.2, Si≤0.5, Mn≤1.7, P≤0.035, S≤0.035,
Nb≤0.07, V≤0.15, Ti≤0.2, Cr≤0.3, Ni≤0.5, Cu≤0.3, N≤0.012, Mo≤0.1, all the other are Fe.Above-mentioned cylinder tube adopts the processing method of Q345B hot finished steel pipe processing to be: selection pipe → blanking →
Alignment → rough turn cylindrical → cylinder body and flange welding → scraping endoporus → rough turn → finish turning; The bevel for welding form of described cylinder body and flange welding is U type groove, welding method is gas shielded welding, protective gas composition is 80% Ar+20% CO2, welding wire is selected flux-cored wire ER50-6, gage of wire φ 1.2, welding parameter is as follows: welding current is: ground floor 200-220A, second layer 230-250A, the 3rd layer of 230-250A; Weldingvoltage is: ground floor 20-22V, and the second layer and the 3rd layer are 23-25; Speed of welding is: ground floor, the second layer and the 3rd layer are 5-8mm. s-1; Air-flow is: ground floor, the second layer and the second layer are 18-25L.min-1; Described scraping endoporus adopts scraping cleaning mill, and scraping working process parameter is: rotating speed 460r/min, feeding 1.2mm, low pressure 32MPa, high pressure 46MPa.
Above, be only preferred embodiment of the present invention, be not the restriction of the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.

Claims (1)

1. a processing technology for cylinder tube, idiographic flow is: select hot finished steel pipe pipe → blanking → alignment → rough turn cylindrical → cylinder body and flange welding → scraping endoporus → rough turn → finish turning; The bevel for welding form of described cylinder body and flange welding is U type groove, welding method is gas shielded welding, protective gas composition is 80% Ar+20% CO2, welding wire is selected flux-cored wire ER50-6, gage of wire φ 1.2, welding parameter is as follows: welding current is: ground floor 200-220A, and the second layer and the 3rd layer are 230-250A; Weldingvoltage is: ground floor 20-22V, and the second layer and the 3rd layer are 23-25; Speed of welding is 5-8mm.s-1; Air-flow is 18-25L.min-1; Described scraping endoporus adopts scraping cleaning mill, and scraping working process parameter is: rotating speed 500r/min, feeding 1.0mm, low pressure 32MPa, high pressure 46MPa; The body material of described cylinder barrel is Q345B, its chemical compositions by percentage is: C≤0.2, Si≤0.5, Mn≤1.7, P≤0.035, S≤0.035, Nb≤0.07, V≤0.15, Ti≤0.2, Cr≤0.3, Ni≤0.5, Cu≤0.3, N≤0.012, Mo≤0.1, all the other are Fe.
CN201310700982.0A 2013-12-19 2013-12-19 Process for machining cylinder barrel of oil cylinder Pending CN103801801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310700982.0A CN103801801A (en) 2013-12-19 2013-12-19 Process for machining cylinder barrel of oil cylinder

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Application Number Priority Date Filing Date Title
CN201310700982.0A CN103801801A (en) 2013-12-19 2013-12-19 Process for machining cylinder barrel of oil cylinder

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CN103801801A true CN103801801A (en) 2014-05-21

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CN201310700982.0A Pending CN103801801A (en) 2013-12-19 2013-12-19 Process for machining cylinder barrel of oil cylinder

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106002093A (en) * 2016-06-08 2016-10-12 郑州煤矿机械集团股份有限公司 Manufacturing method for cylinder barrels with control valve bases
CN113997019A (en) * 2021-11-10 2022-02-01 中煤北京煤矿机械有限责任公司 Method for adopting thickening surfacing welding on hydraulic oil cylinder
CN114289998A (en) * 2021-12-17 2022-04-08 绍兴力欣液压件有限公司 Preparation process of high-strength oil cylinder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106002093A (en) * 2016-06-08 2016-10-12 郑州煤矿机械集团股份有限公司 Manufacturing method for cylinder barrels with control valve bases
CN113997019A (en) * 2021-11-10 2022-02-01 中煤北京煤矿机械有限责任公司 Method for adopting thickening surfacing welding on hydraulic oil cylinder
CN114289998A (en) * 2021-12-17 2022-04-08 绍兴力欣液压件有限公司 Preparation process of high-strength oil cylinder

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Application publication date: 20140521