CN109623104A - A kind of T91 panelized-tube-wall section scene counterpart mounting process method - Google Patents

A kind of T91 panelized-tube-wall section scene counterpart mounting process method Download PDF

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Publication number
CN109623104A
CN109623104A CN201811255592.6A CN201811255592A CN109623104A CN 109623104 A CN109623104 A CN 109623104A CN 201811255592 A CN201811255592 A CN 201811255592A CN 109623104 A CN109623104 A CN 109623104A
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CN
China
Prior art keywords
tube
welding
pipe
panelized
panel
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Pending
Application number
CN201811255592.6A
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Chinese (zh)
Inventor
李�杰
何乐
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Shanghai Boiler Works Co Ltd
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Shanghai Boiler Works Co Ltd
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Priority to CN201811255592.6A priority Critical patent/CN109623104A/en
Publication of CN109623104A publication Critical patent/CN109623104A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/235Preliminary treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/32Accessories
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23MCASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00Casings; Linings; Walls
    • F23M5/08Cooling thereof; Tube walls

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The present invention relates to a kind of T91 panelized-tube-wall section scene counterpart mounting process methods, it is characterized in that, the T91 panelized-tube-wall section is the film-type tube bank structure that pipe adds band steel, and the material of pipe is the seamless high-pressure boiler compo pipe of SA213-T91, and the material of band steel is SA387-Gr91.The present invention solves the problems, such as the building site assembly welding of high efficient secondary reheating extra-supercritical unit SA213-T91 water-cooling wall, the tube panel nondestructive inspection (NDI) 100% of assembly welding is qualified through the invention, welding quality stable is reliable, can provide technical support for the in-site installation of more high parameter grade boiler.

Description

A kind of T91 panelized-tube-wall section scene counterpart mounting process method
Technical field
The present invention relates to a kind of T91 panelized-tube-wall section scene counterpart mounting process methods.
Background technique
With the continuous improvement of boiler sizing parameter, the material rate of water-cooling wall is also continuously improved therewith, after applicant Water-cooling wall will use SA213-T91 material in 630 DEG C of high efficient secondary reheating extra-supercritical units of continuous quasi- exploitation.T91 material It there is no the application example on water-cooling wall, since T91 material alloys component content is high, welding technique requirement and heat treatment etc. are not It is same as current water cooling wall material, panelized-tube-wall section scene counterpart erecting and welding key technology is blank.
Summary of the invention
Technical problem solved by the present invention is solving 630 DEG C of high efficient secondary reheating extra-supercritical unit SA213-T91 water coolings The live counterpart installation question of wall tube panel.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of T91 panelized-tube-wall section scene is right Mouth mounting process method, which is characterized in that the T91 panelized-tube-wall section is the film-type tube bank structure that pipe adds band steel, pipe Material is the seamless high-pressure boiler compo pipe of SA213-T91, and the material of band steel is SA387-Gr91, the scene counterpart mounting process Method the following steps are included:
Step 1 is slotted on the band steel of the two sides tube panel or unilateral tube panel that are located at tube panel to be assembled, and in the flat of fluting Bore stop hole in the end of steel;
The groove at 30 ° to 40 ° angles is poured out in the end for the pipe for being located at two sides tube panel to be assembled;
Two tube panels that step 2, installation step 1 obtain, when assembly, guarantee that two tube panel relative positions are concordant, and guarantee tube panel Each pipe between gap;
Step 3, two tube panels pipe between butt welding welded using manual argon arc welding, pipe is carried out before welding Preheating, carries out nondestructive testing after welding;
Step 4 carries out local heat treatmet to the docking weld bond after step 3 welding;
Step 5, welding panel, panel welding use manual argon arc welding;
Step 6, Welding flat steel cut slot piece;
Step 7 carries out nondestructive inspection (NDI);
Local heat treatmet is carried out after the completion of step 8, the welding of all weld seams.
Preferably, in step 1, band steel is slotted using plasma method, slotting length 200 to 1000m;Tube panel end band steel Cornerite welding is carried out using manual argon arc welding with pipe fillet weld position.
Preferably, in step 6, using stick electrode arc welding when Welding flat steel cuts slot piece, weld preheating, heat after postwelding Disappear hydrogen;In step 5, when welding panel, weld preheating, heat disappears hydrogen after postwelding.
Preferably, it in step 6, when Welding flat steel cuts slot piece, during heat disappears hydrogen after progress, is coated with thermal insulation material slow It is cold;In step 5, when welding panel, during heat disappears hydrogen after progress, slow cooling is coated with thermal insulation material.
Preferably, in step 5, panel opens single side double V-groove, retains the gap 2-3mm with surrounding pipe and band steel when welding, Polish the weld reinforcement of pipe counterpart position.
Preferably, the nondestructive inspection (NDI) be pipe circumferential weld dock RT check, remaining weld seam MT check, after heat treatment weld seam into Row hardness test.
The building site assembly welding that the present invention solves high efficient secondary reheating extra-supercritical unit SA213-T91 water-cooling wall is asked Topic, for T91 due to alloy content height, the technologies such as welding technique and heat treatment are different from current common water cooling wall material, existing Water-cooling wall Installation be not used to T91 material, description technique of the present invention is completely new exploitation, solves T91 water-cooling wall Building site assembling in pipe counterpart, panel welding, local heat treatmet the problems such as, the lossless inspection of the tube panel of assembly welding through the invention 100% qualification is looked into, welding quality stable is reliable, can provide technical support for the in-site installation of more high parameter grade boiler.
Detailed description of the invention
Fig. 1 is the assembling schematic diagram of tube panel I and tube panel II;
Fig. 2 is the sectional view along A-A of Fig. 1;
Fig. 3 is the partial enlarged view of the part I in Fig. 1.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited Range.
The present invention provides a kind of T91 panelized-tube-wall section scene counterpart mounting process methods, wherein T91 panelized-tube-wall section For the film-type tube bank structure of pipe plus band steel, the material of pipe is the seamless high-pressure boiler compo pipe of SA213-T91,38 × 8mm of Φ, The material of band steel is SA387-Gr91, δ=6 × 15mm.The size of tube panel I is 1045 × 1000mm, and the size of tube panel II is 1045 × 2000mm, by tube panel I and tube panel I carry out live counterpart installation process the following steps are included:
Step 1 slots on the band steel 2 of tube panel I and II two sides tube panel of tube panel or unilateral tube panel, and bores crack arrest in end Hole.It is slotted using plasma method, slotting length 200 to 1000m.The end band steel 2 of tube panel I and tube panel II and 1 fillet welding of pipe It stitches position and cornerite welding is carried out using manual argon arc welding.
Step 2 falls 30 ° to 40 ° angle grooves in the end of the pipe 1 of II two sides tube panel of tube panel I and tube panel, in the present embodiment In, then 35 ° of 1 outer chamfer of pipe is assembled tube panel I and tube panel II by form one on the other in place.Guarantee tube panel I when assembly It is concordant with II relative position of tube panel, and guarantee gap between each pipe.
Step 3 docks circumferential weld using argon arc welding welding pipe.Argon arc welding wire selects 3 Φ 2.4mm of Thermanit MTS, Selection of electrodes Chromet 9MVN Φ 3.2mm, wlding are matched with base material, guarantee weld strength and ingredient.
Preweld cleaning tube surface oil, water, rust etc. may influence the dirt of welding, weld preheating, the not rear heat of postwelding.
Step 4 carries out postwelding nondestructive inspection (NDI), and the nondestructive inspection (NDI) is that RT film making checks;
Step 5, butt welding mouth carry out local heat treatmet, i.e., a local heat treatmet is carried out after the completion of pipe circular seam welding.
Nondestructive inspection (NDI) is carried out after step 6, local heat treatmet, the nondestructive inspection (NDI) is hardness test.
Step 7 welds panel 3, weld preheating, postwelding dehydrogenation, guarantor when hot dehydrogenation using manual argon arc welding Adiabator coats slow cooling, and back root cleaning weldering is appropriate after face bonding.Panel 3 opens single side double V-groove, when welding with surrounding pipe 1 and flat Steel 2 retains the gap 2-3mm, and the weld reinforcement of 1 counterpart position of pipe should polish.
Step 8, postwelding nondestructive inspection (NDI), the nondestructive inspection (NDI) are MT inspection.
Step 9 cuts slot piece, weld preheating, postwelding dehydrogenation, hot dehydrogenation using welding electrode arc welding Welding flat steel When with thermal insulation material coat slow cooling, back root cleaning weldering is appropriate after face bonding.
Step 10, postwelding nondestructive inspection (NDI), the nondestructive inspection (NDI) are MT inspection.
Step 11, all weld seams carry out local heat treatmet, i.e. panel and band steel piece carries out primary office after welding again Portion's heat treatment.
Hardness test is carried out to pipe docking circumferential weld after step 12, heat treatment, MT inspection is carried out to all weld seams.
The assembling sequence of tube panel I and tube panel II is first welding equipment pipe circumferential weld counterpart, refills weldering panel, and last Welding flat steel is spelled Seam.

Claims (6)

1. a kind of T91 panelized-tube-wall section scene counterpart mounting process method, which is characterized in that the T91 panelized-tube-wall section is pipe The material of the film-type tube bank structure of son plus band steel, pipe is the seamless high-pressure boiler compo pipe of SA213-T91, and the material of band steel is SA387-Gr91, it is described scene counterpart mounting process method the following steps are included:
Step 1 is slotted on the band steel of the two sides tube panel or unilateral tube panel that are located at tube panel to be assembled, and in the band steel of fluting Bore stop hole in end;
The groove at 30 ° to 40 ° angles is poured out in the end for the pipe for being located at two sides tube panel to be assembled;
Two tube panels that step 2, installation step 1 obtain, when assembly, guarantee that two tube panel relative positions are concordant, and guarantee each of tube panel Gap between pipe;
Step 3, two tube panels pipe between butt welding welded using manual argon arc welding, pipe is carried out before welding pre- Heat carries out nondestructive testing after welding;
Step 4 carries out local heat treatmet to the docking weld bond after step 3 welding;
Step 5, welding panel, panel welding use manual argon arc welding;
Step 6, Welding flat steel cut slot piece;
Step 7 carries out nondestructive inspection (NDI);
Local heat treatmet is carried out after the completion of step 8, the welding of all weld seams.
2. a kind of T91 panelized-tube-wall section scene as described in claim 1 counterpart mounting process method, which is characterized in that step 1 In, band steel is slotted using plasma method, slotting length 200 to 1000m;Tube panel end band steel and pipe fillet weld position use Manual argon arc welding carries out cornerite welding.
3. a kind of T91 panelized-tube-wall section scene as described in claim 1 counterpart mounting process method, which is characterized in that step 6 In, using stick electrode arc welding when Welding flat steel cuts slot piece, weld preheating, heat disappears hydrogen after postwelding;In step 5, weld embedding When plate, weld preheating, heat disappears hydrogen after postwelding.
4. a kind of T91 panelized-tube-wall section scene as claimed in claim 4 counterpart mounting process method, which is characterized in that step 6 In, when Welding flat steel cuts slot piece, during heat disappears hydrogen after progress, slow cooling is coated with thermal insulation material;In step 5, panel is welded When, during heat disappears hydrogen after progress, slow cooling is coated with thermal insulation material.
5. a kind of T91 panelized-tube-wall section scene as described in claim 1 counterpart mounting process method, which is characterized in that step 5 In, panel opens single side double V-groove, retains the gap 2-3mm with surrounding pipe and band steel when welding, polishes the weldering of pipe counterpart position Stitch reinforcement.
6. a kind of T91 panelized-tube-wall section scene as described in claim 1 counterpart mounting process method, which is characterized in that the nothing Damage checks to be that pipe circumferential weld docks RT inspection, remaining weld seam MT checks that weld seam carries out hardness test after heat treatment.
CN201811255592.6A 2018-10-26 2018-10-26 A kind of T91 panelized-tube-wall section scene counterpart mounting process method Pending CN109623104A (en)

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CN201811255592.6A CN109623104A (en) 2018-10-26 2018-10-26 A kind of T91 panelized-tube-wall section scene counterpart mounting process method

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CN201811255592.6A CN109623104A (en) 2018-10-26 2018-10-26 A kind of T91 panelized-tube-wall section scene counterpart mounting process method

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111805053A (en) * 2019-12-30 2020-10-23 武汉锅炉股份有限公司 High-efficiency ultra-supercritical boiler T23 material membrane wall manufacturing method
WO2021025840A1 (en) * 2019-08-06 2021-02-11 General Electric Company System and method for manufacturing a part
CN112846463A (en) * 2021-01-08 2021-05-28 哈尔滨锅炉厂有限责任公司 Method for welding SA-213S30432 material membrane type tube panel

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2021025840A1 (en) * 2019-08-06 2021-02-11 General Electric Company System and method for manufacturing a part
US11286536B2 (en) 2019-08-06 2022-03-29 General Electric Company System and method for manufacturing a part
CN111805053A (en) * 2019-12-30 2020-10-23 武汉锅炉股份有限公司 High-efficiency ultra-supercritical boiler T23 material membrane wall manufacturing method
CN112846463A (en) * 2021-01-08 2021-05-28 哈尔滨锅炉厂有限责任公司 Method for welding SA-213S30432 material membrane type tube panel

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Application publication date: 20190416

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