CN109161808A - A kind of Direct-Buried Heating Pipeline elbow and preparation method thereof - Google Patents

A kind of Direct-Buried Heating Pipeline elbow and preparation method thereof Download PDF

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Publication number
CN109161808A
CN109161808A CN201811279401.XA CN201811279401A CN109161808A CN 109161808 A CN109161808 A CN 109161808A CN 201811279401 A CN201811279401 A CN 201811279401A CN 109161808 A CN109161808 A CN 109161808A
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CN
China
Prior art keywords
direct
preparation
heating pipeline
elbow
pipeline elbow
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
CN201811279401.XA
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Chinese (zh)
Inventor
杨兵
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.)
Jiangsu Yichao Engineering Plastics Co Ltd
Original Assignee
Jiangsu Yichao Engineering Plastics 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 Jiangsu Yichao Engineering Plastics Co Ltd filed Critical Jiangsu Yichao Engineering Plastics Co Ltd
Priority to CN201811279401.XA priority Critical patent/CN109161808A/en
Publication of CN109161808A publication Critical patent/CN109161808A/en
Pending legal-status Critical Current

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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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
    • 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
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
    • 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
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L43/00—Bends; Siphons
    • F16L43/001—Bends; Siphons made of metal

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention discloses a kind of Direct-Buried Heating Pipeline elbow and preparation method thereof, the raw material of the elbow includes: carbon, silicon, manganese, cobalt, vanadium, titanium, tin, chromium, nickel, magnesium, niobium, phosphorus, sour aluminum melting, lanthanum boride, iron.Preparation method includes the following process successively carried out: blanking, charging, heating in medium frequency, pushing, school mouth, the inspection of semifinished product, heat treatment, machining, product inspection, paint packaging.Rationally, quality is reliable and stable for elbow component of the invention and dosage design, and mechanical property and corrosion resistance examine the object performance index that can reach similar products at home and abroad.

Description

A kind of Direct-Buried Heating Pipeline elbow and preparation method thereof
Technical field
The invention belongs to stainless steel bend technical fields, and in particular to a kind of Direct-Buried Heating Pipeline elbow and its preparation side Method.
Background technique
Elbow is common a kind of connecting pipe part in Pipe installing, connects two same or different pipes of inside nominal diameter Son makes pipeline do certain angle turning.In pipe-line system, elbow be change pipeline direction pipe fitting, angularly divide, have 45 °, 90 °, 180 ° three kinds it is most common, further include 60 ° of other equal improper angle elbows according further to requirement of engineering.It is currently used Elbow material has cast iron, stainless steel, steel alloy, malleable cast iron, carbon steel, non-ferrous metal and plastics etc..
With the continuous expansion of central heating scale, heavy caliber, high pressure Direct-Buried Heating Pipeline obtained universal answer With, and operational effect is good.At present direct-burried caliber size oneself reached DN1400, the directly buried installation mode of large diameter pipeline is to have It compensates based on system of laying.And use balanced system of laying just it is inevitable it is more use the attachmentes such as anchor block, compensator, Gu Determine pier and compensator is for protecting the pipe fittings such as elbow, threeway, reducer pipe and valve, especially to elbow, usage quantity is maximum.And The price of these conduit fittings is very high, causes the waste significantly of fund, equipment, brings unnecessary burden another to entire engineering Outside, the use of compensator can also carry out many unsafe factors to heating net belt, reduce the reliability of heating network.
Summary of the invention
The purpose of the present invention is in view of the above shortcomings of the prior art, provide a kind of Direct-Buried Heating Pipeline elbow and its preparation Method.
A kind of Direct-Buried Heating Pipeline elbow, raw material include: carbon 0.10-0.12%, silicon 0.25- by weight percentage 0.35%, manganese 1.5-1.7%, cobalt 0.05-0.07%, vanadium 0.03-0.04%, titanium 0.01-0.02%, tin 0.1-0.3%, chromium 0.35- 0.40%, nickel 0.1-0.3%, magnesium 0.1-0.2%, niobium 0.03-0.04%, phosphorus≤0.01%, sour aluminum melting 0.05-0.2%, lanthanum boride 0.05-0.1%, surplus are iron；The sum of weight percent of all raw materials is 100%.
Preferably, the Direct-Buried Heating Pipeline elbow, raw material include: carbon 0.11%, silicon 0.30%, manganese by weight percentage 1.6%, cobalt, vanadium 0.04%, titanium 0.015%, tin 0.2%, chromium 0.35%, nickel 0.2%, magnesium 0.1%, niobium 0.035%, phosphorus 0.005%, acid is molten Aluminium 0.15%, lanthanum boride 0.05%, surplus are iron；The sum of weight percent of all raw materials is 100%.
The preparation method of above-mentioned Direct-Buried Heating Pipeline elbow, including the following process successively carried out: blanking, charging, intermediate frequency Heating, pushing, school mouth, the inspection of semifinished product, heat treatment, machining, product inspection, paint packaging.
Preferably, the temperature of heating in medium frequency is 850-950 DEG C.
Preferably, push system speed 200-300mm/min.
Rationally, quality is reliable and stable for elbow component of the invention and dosage design, and mechanical property and corrosion resistance inspection are equal The object performance index of similar products at home and abroad can be reached.
Specific embodiment
Embodiment 1
A kind of Direct-Buried Heating Pipeline elbow, raw material include: carbon 0.10%, silicon 0.25%, manganese 1.5%, cobalt by weight percentage 0.05%, vanadium 0.03%, titanium 0.01%, tin 0.1%, chromium 0.35%, nickel 0.1%, magnesium 0.1%, niobium 0.03%, phosphorus 0.01%, sour aluminum melting 0.05%, lanthanum boride 0.05%, surplus is iron；The sum of weight percent of all raw materials is 100%.
The preparation method of above-mentioned Direct-Buried Heating Pipeline elbow, including the following process successively carried out: blanking, charging, intermediate frequency Heating, pushing, school mouth, the inspection of semifinished product, heat treatment, machining, product inspection, paint packaging.
In heating in medium frequency process, pipe is pushed into preheating station, is heated to 850 DEG C, guarantees that circumferential temperature is uniform, The influence of temperature and its distribution to push-making angle fitting geometry.
Fltting speed influences the fltting speed technological parameter important as one to push-making angle fitting geometry, and control pushes away Plate starts continuous pushing shaped in the at the uniform velocity lower of 220mm/ min.
Heat treatment is that elbow after molding is sent into heat-treatment furnace quickly to be heated.
Machining is to be machined out groove to elbow ends according to the requirement of standard and drawing.
Through detecting, obtained elbow mechanical property and corrosion resistance examine the material object that can reach similar products at home and abroad Performance indicator.
Embodiment 2
A kind of Direct-Buried Heating Pipeline elbow, raw material include: carbon 0.11%, silicon 0.30%, manganese 1.6%, cobalt by weight percentage 0.06%, vanadium 0.035%, titanium 0.015%, tin 0.2%, chromium 0.38%, nickel 0.2%, magnesium 0.15%, niobium 0.035%, phosphorus 0.005%, acid is molten Aluminium 0.15%, lanthanum boride 0.08%, surplus are iron；The sum of weight percent of all raw materials is 100%.
The preparation method of above-mentioned Direct-Buried Heating Pipeline elbow, including the following process successively carried out: blanking, charging, intermediate frequency Heating, pushing, school mouth, the inspection of semifinished product, heat treatment, machining, product inspection, paint packaging.
In heating in medium frequency process, pipe is pushed into preheating station, is heated to 900 DEG C, guarantees that circumferential temperature is uniform, The influence of temperature and its distribution to push-making angle fitting geometry.
Fltting speed influences the fltting speed technological parameter important as one to push-making angle fitting geometry, and control pushes away Plate starts continuous pushing shaped in the at the uniform velocity lower of 250mm/ min.
Heat treatment is that elbow after molding is sent into heat-treatment furnace quickly to be heated.
Machining is to be machined out groove to elbow ends according to the requirement of standard and drawing.
Through detecting, obtained elbow mechanical property and corrosion resistance examine the material object that can reach similar products at home and abroad Performance indicator.
Embodiment 3
A kind of Direct-Buried Heating Pipeline elbow, raw material include: carbon 0.12%, silicon 0.35%, manganese 1.7%, cobalt by weight percentage 0.07%, vanadium 0.04%, titanium 0.02%, tin 0.3%, chromium 0.40%, nickel 0.3%, magnesium 0.2%, niobium 0.04%, phosphorus 0.005%, sour aluminum melting 0.2%, lanthanum boride 0.1%, surplus is iron；The sum of weight percent of all raw materials is 100%.
The preparation method of above-mentioned Direct-Buried Heating Pipeline elbow, including the following process successively carried out: blanking, charging, intermediate frequency Heating, pushing, school mouth, the inspection of semifinished product, heat treatment, machining, product inspection, paint packaging.
In heating in medium frequency process, pipe is pushed into preheating station, is heated to 950 DEG C, guarantees that circumferential temperature is uniform, The influence of temperature and its distribution to push-making angle fitting geometry.
Fltting speed influences the fltting speed technological parameter important as one to push-making angle fitting geometry, and control pushes away Plate starts continuous pushing shaped in the at the uniform velocity lower of 250mm/ min.
Heat treatment is that elbow after molding is sent into heat-treatment furnace quickly to be heated.
Machining is to be machined out groove to elbow ends according to the requirement of standard and drawing.
Through detecting, obtained elbow mechanical property and corrosion resistance examine the material object that can reach similar products at home and abroad Performance indicator.

Claims (6)

1. a kind of Direct-Buried Heating Pipeline elbow, it is characterised in that: raw material includes: carbon 0.10-0.12%, silicon by weight percentage 0.25-0.35%, manganese 1.5-1.7%, cobalt 0.05-0.07%, vanadium 0.03-0.04%, titanium 0.01-0.02%, tin 0.1-0.3%, chromium 0.35-0.40%, nickel 0.1-0.3%, magnesium 0.1-0.2%, niobium 0.03-0.04%, phosphorus≤0.01%, sour aluminum melting 0.05-0.2%, boronation Lanthanum 0.05-0.1%, surplus are iron；The sum of weight percent of all raw materials is 100%.
2. Direct-Buried Heating Pipeline elbow according to claim 1, it is characterised in that: raw material includes: by weight percentage Carbon 0.11%, silicon 0.30%, manganese 1.6%, cobalt 0.06%, vanadium 0.04%, titanium 0.015%, tin 0.2%, chromium 0.35%, nickel 0.2%, magnesium 0.1%, Niobium 0.035%, phosphorus 0.005%, sour aluminum melting 0.15%, lanthanum boride 0.05%, surplus is iron；The sum of the weight percent of all raw materials is 100%。
3. the preparation method of Direct-Buried Heating Pipeline elbow of any of claims 1 or 2, it is characterised in that: including what is successively carried out Following process: blanking, charging, heating in medium frequency, pushing, school mouth, the inspection of semifinished product, heat treatment, machining, product inspection, paint Packaging.
4. the preparation method of Direct-Buried Heating Pipeline elbow according to claim 3, it is characterised in that: the temperature of heating in medium frequency It is 850-950 DEG C.
5. the preparation method of Direct-Buried Heating Pipeline elbow according to claim 3, it is characterised in that: push system speed 200- 300mm/min。
6. the preparation method of Direct-Buried Heating Pipeline elbow according to claim 3, it is characterised in that: the temperature of heating in medium frequency It is 890 DEG C, push system speed 240mm/min.
CN201811279401.XA 2018-10-30 2018-10-30 A kind of Direct-Buried Heating Pipeline elbow and preparation method thereof Pending CN109161808A (en)

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CN201811279401.XA CN109161808A (en) 2018-10-30 2018-10-30 A kind of Direct-Buried Heating Pipeline elbow and preparation method thereof

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Application Number Priority Date Filing Date Title
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CN109161808A true CN109161808A (en) 2019-01-08

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101474646A (en) * 2009-01-15 2009-07-08 河北省沧州恒通管件制造有限公司 Hot extrusion technological process for elbow from X80 grade steel plate
CN102189377A (en) * 2011-03-23 2011-09-21 河北宇鹏重工管道装备制造有限公司 Manufacture process of X100 steel-grade steel plate hot-press bend
CN108220816A (en) * 2017-12-29 2018-06-29 陈章华 A kind of low chromium shock resistance high-temperature antiwear alloy steel and preparation method thereof
CN108588579A (en) * 2018-04-28 2018-09-28 苏州大学 Novel martensitic heat resisting steel and the method for carrying out seamless steel pipe thin-wall bend manufacture using it

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101474646A (en) * 2009-01-15 2009-07-08 河北省沧州恒通管件制造有限公司 Hot extrusion technological process for elbow from X80 grade steel plate
CN102189377A (en) * 2011-03-23 2011-09-21 河北宇鹏重工管道装备制造有限公司 Manufacture process of X100 steel-grade steel plate hot-press bend
CN108220816A (en) * 2017-12-29 2018-06-29 陈章华 A kind of low chromium shock resistance high-temperature antiwear alloy steel and preparation method thereof
CN108588579A (en) * 2018-04-28 2018-09-28 苏州大学 Novel martensitic heat resisting steel and the method for carrying out seamless steel pipe thin-wall bend manufacture using it

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Application publication date: 20190108