CN105014187A - Single-side welding and double-side forming method for ceramic gasket of rubber lined tank - Google Patents
Single-side welding and double-side forming method for ceramic gasket of rubber lined tank Download PDFInfo
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- CN105014187A CN105014187A CN201510392929.8A CN201510392929A CN105014187A CN 105014187 A CN105014187 A CN 105014187A CN 201510392929 A CN201510392929 A CN 201510392929A CN 105014187 A CN105014187 A CN 105014187A
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- 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
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
-
- 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
-
- 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
- B23K9/235—Preliminary treatment
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/12—Vessels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention belongs to the technical field of welding in petrochemical industry, in particular to a single-side welding and double-side forming method for a ceramic gasket of a rubber lined tank. The single-side welding and double-side forming method comprises the following steps: (1) selecting and checking a welding groove; (2) carrying out pre-welding treatment; (3) carrying out welding assembly and checking; (4) pasting the ceramic gasket; and (5) welding. The single-side welding and double-side forming method avoids back chipping, overhead position welding and operating in a narrow and closed environment in a welding process, thereby reliving labor intensity of a welder, improving the welding production efficiency in multiples, guaranteeing the welding quality, reducing workload of grinding a welding seam after plentiful welding because of higher requirements, on the inner wall of the tank, of lined rubber in the tank body, improving the rubber lining efficiency, reducing the rubber lining cost, reducing the construction cost, effectively shortening the construction period, and avoiding harms on a human body and the environment; and in comparison with a conventional welding method, the single-side welding and double-side forming method is a sustainable green welding method which is advanced in process and high in welding quality.
Description
Technical field
The invention belongs to petrochemical industry welding technology field, be specifically related to line with rubber tank ceramic substrate single face welding and double face shaping method.
Background technology
In industrial installation process, the fabrication and installation of carbon steel line with rubber tank can be seen everywhere.Line with rubber tank is a kind of outside is skeleton with steel plate, inner liner abrasive resistant, anticorrosion and resistant to elevated temperatures rubber are as the tank body of backing layer, by the process based prediction model of rubber self, reduce the effect of medium to external structure as impulsive force, corrosion etc., substantially prolongs the service life of tank body, reduce the cost of user, therefore line with rubber tank being applied in the industrial production is growing.But according to construction requirement for meeting line with rubber condition, the surface of top tank structure must be smooth, impulse-free robustness, overlap, sharp edge etc., this just brings larger difficulty to construction, often after tank body makes, need a large amount of manpower and materials of cost to carry out grinding process to the commissure of top tank structure again, add construction cost greatly, delayed construction speed, reduce efficiency of construction, for the integral construction duration, be extremely factors of instability.Therefore in order to can while guarantee construction quality, the system peace efficiency improving line with rubber tank becomes a priority and difficulty in work progress.
Summary of the invention
The object of the invention is, for the shortcoming existed in background technology and problem improvement and bring new ideas in addition, to provide a kind of line with rubber tank ceramic substrate single face welding and double face shaping method.
Technical scheme of the present invention is:
Line with rubber tank ceramic substrate single face welding and double face shaping method, the technique of the method comprises the following steps:
1) selection of bevel for welding and inspection: adopt gas flame cuttiug or method for plasma cutting cutting, groove angle is 40 ~ 45 degree, and root face length is 0 ~ 2mm, if groove face creates serious cutting ripple, removal of should polishing, ensures domatic smooth uniform;
2) preweld cleaning: clear up in groove and each 20mm in groove both sides, removes the dirt, greasy dirt, paint, iron rust, oxide skin, the moisture that affect welding quality; The location for paste of pasting ceramic substrate is cleaned, removes the dust of obstruction stickup, " something that gives the game away ", dross;
3) assemble welding and inspection: be accurately in place by welded part, makes groove gap be 4 ~ 16mm, fixing, installs run-on tab;
4) pasted with ceramic veneer liner: ceramic substrate is pasted the groove back side, make the center line of ceramic substrate aim at center, the groove back side, deviation is less than 2mm, keeps compact siro spinning technology between ceramic substrate;
5) weld: adopt manual electric arc welding or gas shielded arc welding; after preheating during striking from the groove on run-on tab; progressively electric arc is caused in weld seam; at the end of welding; electric arc should be caused on arc-extinguishing plate and carry out blow-out again; striking should be continuous to the process of blow-out, welds prime coat, packed layer, three layers, capping layer altogether.
In an embodiment wherein, described fixed form is tack welding, and the length of tack welding is 30 ~ 50mm, and spacing is 150 ~ 200mm, and layer thickness is 1/2 thickness of slab.
In an embodiment wherein, striking cannot keep consecutive hours to the process of blow-out, and breakpoint between layers should be made to keep the distance of at least 30mm.
In an embodiment wherein, when joint environment temperature is lower than-5 DEG C of welding common intensity steel, preheat temperature is not less than 80 DEG C, and when environment temperature is lower than 0 DEG C of welding high strength steel, preheat temperature is not less than 100 DEG C.
In an embodiment wherein, welding manner is leftward welding.
The invention has the beneficial effects as follows: can be two-sided once-forming from face bonding, sealing run is shaping full, and soldering is neat, optimizes on-the-spot welding process, arc stability during welding, ensure that welding quality, improves work efficiency, avoid the back chipping in welding process, overhead welding and narrow enclosed environment in operation, so alleviate welder's labour intensity, welding production efficiency is significantly improved, welding quality is protected, and because tank body inner liner rubber requires higher to top tank structure, the workload of artificial polishing welding seams after decreasing a large amount of welding, line with rubber efficiency gets a promotion, line with rubber cost reduces, decrease operating expenses, effectively shorten the construction period, can not work the mischief to human body and environment simultaneously, compared with traditional welding method, that a kind of technique is advanced, " green " welding method of the sustainable development that welding quality is high.
Accompanying drawing explanation
Fig. 1 is that the present invention is flat, vertical position welding position divided edge structure schematic diagram.
Fig. 2 is horizontal position welding position of the present invention divided edge structure schematic diagram.
Fig. 3 is one side complete penetraction and fusion in welding angle welding structural representation of the present invention.
Fig. 4 is the present invention's striking blow-out processing mode schematic diagram in welded joints.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.First-selected embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, the object of these embodiments is provided to be make to disclosure of the present invention more thoroughly comprehensively.
It should be noted that, when element is considered to " setting " on another element, it can be directly arrange or be connected on another element or may there is centering elements simultaneously.
Unless otherwise defined, all technology used herein are identical with the implication that those skilled in the art of the present invention understand usually with scientific terminology.The term used in description, just in order to describe concrete enforcement object, is not intended to be restriction the present invention.
Ceramic substrate single face welding and double face shaping be a kind of with aluminium oxide ceramic material for setting off (also known as welding substrate), this material is attached to a kind of method that welding is carried out in the welding point back side then, mainly ensure that steel material plug root through welding and back of weld are shaped, weld seam is made to force the welding method of efficient, high-quality, the low cost be shaped, inner tank wall weld grinding workload can be reduced greatly, saving of work and time in line with rubber tank makes.
When using ceramic substrate welding, the die body that molten bath periphery is made up of metal welding body and liner.Because the thermal conductivity of ceramic substrate and base metals differs greatly, the heat radiation in molten bath is in extremely uneven state, the heat radiation of both sides, molten bath is very fast, bottom heat radiation is slow, when normal weld, along with the movement of electric arc, molten bath cooling starts crystallization, top, molten bath is subject to the heat effect temperature of electric arc higher than bottom, the crystallization of liquid state of molten pool metal is crystallization from bottom to top, and compared with normal weld, the crystallization direction that ceramic substrate welds its molten bath more can be tending towards axis of a weld, therefore, this method effectively can improve welding quality.
Embodiment 1: a kind of line with rubber tank ceramic substrate single face welding and double face shaping method, the technique of the method comprises the following steps:
1) selection of bevel for welding and inspection: retaining wall on slope adopts method for plasma cutting, and groove angle is 40 degree, and root face length is 2mm, if groove face creates serious cutting ripple, should to polish removal, to ensure domatic smooth uniform, the concrete form downhand welding position as shown in Figure 1 of groove;
2) preweld cleaning: clear up in reply groove and each 20mm in both sides before weldering, removes the material that dirt, greasy dirt, paint, iron rust, oxide skin, moisture etc. affect welding quality.Greasy dirt, paint and bake by flame.Carry out cleaning near the location for paste of subsides ceramic substrate, remove the thing that " something that gives the game away ", dross etc. hinder stickup, wipe the surface dirt of location for paste simultaneously, to increase adhesive bond, prevent the situations such as accidental from affecting welding quality.
3) assemble welding and inspection: before weldering, welded part should be installed to position accurately, ensures that groove gap is 4mm, and check whether the plate of groove both sides aligns, and unfitness of butt joint should control within the limits prescribed, to exceeding deviation, should adjust.After determining to meet the requirements, by retaining element, welded part is fixed, and run-on tab is installed.For the mother metal having preheating requirement, preheating should be carried out equally when tack welding.Tack welding mother metal used with formally weld consistent;
4) pasted with ceramic veneer liner: ceramic substrate is pasted the groove back side, make the center line of ceramic substrate aim at center, the groove back side, deviation is less than 2mm, keeps compact siro spinning technology between ceramic substrate, prevents from disconnecting;
5) weld: adopt manual electric arc welding, after preheating during striking from the groove on run-on tab, progressively electric arc is caused in weld seam, at the end of welding, electric arc should be caused on arc-extinguishing plate and carry out blow-out again, striking should be continuous to the process of blow-out, welding prime coat, packed layer, three layers, capping layer altogether, for avoiding producing Interlaminar Crack, strictly controlling interlayer temperature, after front one deck has welded, later layer has covered immediately.
Concrete welding conditions can see the following form or according to concerned countries specification:
Embodiment 2: a kind of line with rubber tank ceramic substrate single face welding and double face shaping method, the technique of the method comprises the following steps:
1) selection of bevel for welding and inspection: retaining wall on slope adopts gas flame cuttiug or method for plasma cutting cutting, groove angle is 45 degree, root face length is 1mm, if groove face creates serious cutting ripple, should to polish removal, ensure domatic smooth uniform, the concrete form horizontal position welding position as shown in Figure 2 of groove;
2) preweld cleaning: clear up in reply groove and each 20mm in both sides before weldering, removes the material that dirt, greasy dirt, paint, iron rust, oxide skin, moisture etc. affect welding quality.Greasy dirt, paint and bake by flame.Carry out cleaning near the location for paste of subsides ceramic substrate, remove the thing that " something that gives the game away ", dross etc. hinder stickup, wipe the surface dirt of location for paste simultaneously, to increase adhesive bond, prevent the situations such as accidental from affecting welding quality.
3) assemble welding and inspection: before weldering, welded part should be installed to position accurately, ensures that groove gap is 10mm, and check whether the plate of groove both sides aligns, and unfitness of butt joint should control within the limits prescribed, to exceeding deviation, should adjust.After determining to meet the requirements, by retaining element, welded part is fixed, and run-on tab is installed.For the mother metal having preheating requirement, preheating should be carried out equally when tack welding.Tack welding mother metal used with formally weld consistent;
4) pasted with ceramic veneer liner: ceramic substrate is pasted the groove back side, make the center line of ceramic substrate aim at center, the groove back side, deviation is less than 2mm, keeps compact siro spinning technology between ceramic substrate, prevents from disconnecting;
5) weld: adopt manual electric arc welding or gas shielded arc welding; after preheating during striking from the groove on run-on tab; progressively electric arc is caused in weld seam, at the end of welding, electric arc should be caused on arc-extinguishing plate and carry out blow-out again; striking should be continuous to the process of blow-out; welding prime coat, packed layer, three layers, capping layer altogether, for avoiding producing Interlaminar Crack, strictly controlling interlayer temperature; after front one deck has welded, later layer has covered immediately.
Especially, described fixed form is tack welding, and the length of tack welding is 40mm, and spacing is 175mm, and layer thickness is 1/2 thickness of slab.
Embodiment 3: a kind of line with rubber tank ceramic substrate single face welding and double face shaping method, the technique of the method comprises the following steps:
1) selection of bevel for welding and inspection: retaining wall on slope adopts gas flame cuttiug or method for plasma cutting cutting, groove angle is 45 degree, root face length is 0mm, namely without root face, if groove face creates serious cutting ripple, should to polish removal, to ensure domatic smooth uniform, the concrete form one side complete penetraction and fusion in welding angle welding as shown in Figure 3 of groove;
2) preweld cleaning: clear up in reply groove and each 20mm in both sides before weldering, removes the material that dirt, greasy dirt, paint, iron rust, oxide skin, moisture etc. affect welding quality.Greasy dirt, paint and bake by flame.Carry out cleaning near the location for paste of subsides ceramic substrate, remove the thing that " something that gives the game away ", dross etc. hinder stickup, wipe the surface dirt of location for paste simultaneously, to increase adhesive bond, prevent the situations such as accidental from affecting welding quality.
3) assemble welding and inspection: before weldering, welded part should be installed to position accurately, ensures that groove gap is 16mm, and check whether the plate of groove both sides aligns, and unfitness of butt joint should control within the limits prescribed, to exceeding deviation, should adjust.After determining to meet the requirements, by retaining element, welded part is fixed, and run-on tab is installed.For the mother metal having preheating requirement, preheating should be carried out equally when tack welding.Tack welding mother metal used with formally weld consistent;
4) pasted with ceramic veneer liner: ceramic substrate is pasted the groove back side, make the center line of ceramic substrate aim at center, the groove back side, deviation is less than 2mm, keeps compact siro spinning technology between ceramic substrate, prevents from disconnecting;
5) weld: adopt manual electric arc welding or gas shielded arc welding; after preheating during striking from the groove on run-on tab; progressively electric arc is caused in weld seam, at the end of welding, electric arc should be caused on arc-extinguishing plate and carry out blow-out again; striking should be continuous to the process of blow-out; welding prime coat, packed layer, three layers, capping layer altogether, for avoiding producing Interlaminar Crack, strictly controlling interlayer temperature; after front one deck has welded, later layer has covered immediately.
Especially, if must blow-out when welding, blow-out again after arc crater should being filled up, to avoid producing arc crater and crater crack, draw in welded joints, blow-out time, should note keeping one section of overlapping region between layers, make breakpoint between layers keep the distance of at least 30mm.As shown in Figure 4, upper figure is correct way, and figure below is wrong-doing.
Especially, when joint environment temperature is lower than-5 DEG C of welding common intensity steel, preheat temperature is not less than 80 DEG C, and when environment temperature is lower than 0 DEG C of welding high strength steel, preheat temperature is not less than 100 DEG C.
Especially, adopt leftward welding during welding, can either groove be seen clearly like this, prevent from being partially welded, electric arc butt-welding fitting can be utilized again to carry out pre-heat effect, the width of sealing run is increased.During welding, welding wire (welding rod) can carry out a small amount of swing, and hunting range meets related request.
Embodiment of the present invention is only the description carried out the preferred embodiment of the present invention; not design of the present invention and scope are limited; under the prerequisite not departing from design philosophy of the present invention; the various modification that in this area, engineers and technicians make technical scheme of the present invention and improvement; protection scope of the present invention all should be fallen into; the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (5)
1. line with rubber tank ceramic substrate single face welding and double face shaping method, is characterized in that:
The technique of the method comprises the following steps:
1) selection of bevel for welding and inspection: adopt gas flame cuttiug or method for plasma cutting cutting, groove angle is 40 ~ 45 degree, and root face length is 0 ~ 2mm, if groove face creates serious cutting ripple, removal of should polishing, ensures domatic smooth uniform;
2) preweld cleaning: clear up in groove and each 20mm in groove both sides, removes the dirt, greasy dirt, paint, iron rust, oxide skin, the moisture that affect welding quality; The location for paste of pasting ceramic substrate is cleaned, removes the dust of obstruction stickup, " something that gives the game away ", dross;
3) assemble welding and inspection: be accurately in place by welded part, makes groove gap be 4 ~ 16mm, fixing, installs run-on tab;
4) pasted with ceramic veneer liner: ceramic substrate is pasted the groove back side, make the center line of ceramic substrate aim at center, the groove back side, deviation is less than 2mm, keeps compact siro spinning technology between ceramic substrate;
5) weld: adopt manual electric arc welding or gas shielded arc welding; after preheating during striking from the groove on run-on tab; progressively electric arc is caused in weld seam; at the end of welding; electric arc should be caused on arc-extinguishing plate and carry out blow-out again; striking should be continuous to the process of blow-out, welds prime coat, packed layer, three layers, capping layer altogether.
2. line with rubber tank ceramic substrate single face welding and double face shaping method according to claim 1, is characterized in that:
Described fixed form is tack welding, and the length of tack welding is 30 ~ 50mm, and spacing is 150 ~ 200mm, and layer thickness is 1/2 thickness of slab.
3. line with rubber tank ceramic substrate single face welding and double face shaping method according to claim 1, is characterized in that:
Striking cannot keep consecutive hours to the process of blow-out, and breakpoint between layers should be made to keep the distance of at least 30mm.
4. line with rubber tank ceramic substrate single face welding and double face shaping method according to claim 1, is characterized in that:
When joint environment temperature is lower than-5 DEG C of welding common intensity steel, preheat temperature is not less than 80 DEG C, and when environment temperature is lower than 0 DEG C of welding high strength steel, preheat temperature is not less than 100 DEG C.
5. line with rubber tank ceramic substrate single face welding and double face shaping method according to claim 1, is characterized in that:
Welding manner is leftward welding.
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| CN201510392929.8A CN105014187A (en) | 2015-07-07 | 2015-07-07 | Single-side welding and double-side forming method for ceramic gasket of rubber lined tank |
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| CN201510392929.8A CN105014187A (en) | 2015-07-07 | 2015-07-07 | Single-side welding and double-side forming method for ceramic gasket of rubber lined tank |
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Cited By (12)
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| CN106425052A (en) * | 2016-10-31 | 2017-02-22 | 北京石油化工学院 | Method for achieving electric-arc welding all-position one-side welding with back formation |
| CN106862730A (en) * | 2017-03-30 | 2017-06-20 | 广船国际有限公司 | A kind of vertical butt welding method of slab |
| CN107283031A (en) * | 2017-07-26 | 2017-10-24 | 江苏文汇钢业工程有限公司 | A kind of inconel weld complete penetration welding method |
| CN107520548A (en) * | 2017-10-10 | 2017-12-29 | 四川蓝星机械有限公司 | A kind of assembly welding method taken over housing for emplacement type structure |
| CN107552985A (en) * | 2017-10-23 | 2018-01-09 | 中国十九冶集团有限公司 | Ceramic substrate is used for the construction method of steel case bridge butt weld |
| CN107570899A (en) * | 2017-06-28 | 2018-01-12 | 中联重科股份有限公司 | Welding method and the welding equipment for implementing the welding method |
| CN109500480A (en) * | 2018-12-29 | 2019-03-22 | 浙江博凡动力装备股份有限公司 | A kind of stainless ceramic liner welding procedure |
| CN109676219A (en) * | 2018-12-30 | 2019-04-26 | 重庆欣雨压力容器制造有限责任公司 | A kind of CO2The welding method of ceramic backing single face welding and double face shaping |
| CN111230265A (en) * | 2020-02-25 | 2020-06-05 | 重庆川东船舶重工有限责任公司 | Single-side forming welding method for aluminum alloy gasket |
| CN113800936A (en) * | 2021-08-25 | 2021-12-17 | 中国化学工程第十三建设有限公司 | Ceramic liner welding construction method for large storage tank |
| CN115415235A (en) * | 2022-07-26 | 2022-12-02 | 沪东中华造船(集团)有限公司 | Treatment method for pre-adhesion of stainless steel sealing plate of film tank |
| US11920701B2 (en) * | 2018-06-27 | 2024-03-05 | Minimax Viking Research & Development Gmbh | Method for producing a number of pipes having a predefined pipe diameter, pipe, and piping system |
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| CN106425052A (en) * | 2016-10-31 | 2017-02-22 | 北京石油化工学院 | Method for achieving electric-arc welding all-position one-side welding with back formation |
| CN106862730A (en) * | 2017-03-30 | 2017-06-20 | 广船国际有限公司 | A kind of vertical butt welding method of slab |
| CN107570899A (en) * | 2017-06-28 | 2018-01-12 | 中联重科股份有限公司 | Welding method and the welding equipment for implementing the welding method |
| CN107283031A (en) * | 2017-07-26 | 2017-10-24 | 江苏文汇钢业工程有限公司 | A kind of inconel weld complete penetration welding method |
| CN107520548A (en) * | 2017-10-10 | 2017-12-29 | 四川蓝星机械有限公司 | A kind of assembly welding method taken over housing for emplacement type structure |
| CN107552985A (en) * | 2017-10-23 | 2018-01-09 | 中国十九冶集团有限公司 | Ceramic substrate is used for the construction method of steel case bridge butt weld |
| US11920701B2 (en) * | 2018-06-27 | 2024-03-05 | Minimax Viking Research & Development Gmbh | Method for producing a number of pipes having a predefined pipe diameter, pipe, and piping system |
| CN109500480A (en) * | 2018-12-29 | 2019-03-22 | 浙江博凡动力装备股份有限公司 | A kind of stainless ceramic liner welding procedure |
| CN109676219A (en) * | 2018-12-30 | 2019-04-26 | 重庆欣雨压力容器制造有限责任公司 | A kind of CO2The welding method of ceramic backing single face welding and double face shaping |
| CN111230265A (en) * | 2020-02-25 | 2020-06-05 | 重庆川东船舶重工有限责任公司 | Single-side forming welding method for aluminum alloy gasket |
| CN113800936A (en) * | 2021-08-25 | 2021-12-17 | 中国化学工程第十三建设有限公司 | Ceramic liner welding construction method for large storage tank |
| CN115415235A (en) * | 2022-07-26 | 2022-12-02 | 沪东中华造船(集团)有限公司 | Treatment method for pre-adhesion of stainless steel sealing plate of film tank |
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