CN104651834B - CAP1400 main steam pipe penetration piece electric smelting manufacturing process - Google Patents
CAP1400 main steam pipe penetration piece electric smelting manufacturing process Download PDFInfo
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- CN104651834B CN104651834B CN201410677014.7A CN201410677014A CN104651834B CN 104651834 B CN104651834 B CN 104651834B CN 201410677014 A CN201410677014 A CN 201410677014A CN 104651834 B CN104651834 B CN 104651834B
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- 238000003723 Smelting Methods 0.000 title claims abstract description 90
- 230000035515 penetration Effects 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 120
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000007493 shaping process Methods 0.000 claims abstract description 15
- 239000002893 slag Substances 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 7
- 238000009825 accumulation Methods 0.000 claims abstract description 6
- 238000010891 electric arc Methods 0.000 claims abstract description 6
- 238000007711 solidification Methods 0.000 claims abstract description 6
- 230000008023 solidification Effects 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
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- 238000003754 machining Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 17
- 238000000151 deposition Methods 0.000 description 11
- 230000008021 deposition Effects 0.000 description 11
- 238000005242 forging Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 210000003625 skull Anatomy 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
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- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
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- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 230000003796 beauty Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
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- 150000004820 halides Chemical class 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
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Classifications
-
- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
- C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
Abstract
The present invention provides a kind of efficient,Low cost,CAP1400 main steam pipe penetration piece electric smelting manufacturing process with excellent mechanical performances,In the method,Electric smelting head is connected to two poles with base material,Raw metal silk material delivers to substrate surface via conveying mechanism and electric smelting head during shaping,Under the accumulation protection of graininess auxiliary material,Electric arc is produced between raw material silk material and base material,Melt portions heap applies auxiliary material and forms melting slag bath,Electric current flows through raw material silk material and melting auxiliary material slag bath forms resistance heat and electroslag heat,In arc heat,Resistance heat,Raw material silk material is melted under electroslag three kinds of hot composite high-energy Sources of heat,Local molten bath is formed in substrate surface,Continue transferring raw material silk material and auxiliary material,Hierarchy slicing data according to formed parts,Using computer controls electric smelting head and the relative movement of base material,Realize that molten bath quick cooling Layer by layer solidification on base material is piled up,Final successively stack shaping goes out main steam pipe penetration piece.
Description
Technical field
The present invention relates to a kind of CAP1400 main steam pipes penetration piece electric smelting manufacturing process.
Background technology
Nuclear power main steam pipe penetration is crossed inside and outside CV (steel containment vessel), is to ensure that secondary circuit cooling water through primary Ioops
The key member that the acting of Steam Actuation steam turbine is realized generating electricity is evaporated to after water under high pressure heat exchange, is the pivot for connecting nuclear island and conventional island
Knob part, undergos harsh working environment and safety requirements, therefore researches and develops preparation to pipeline material, is also all always nuclear power master
One of great brainstorm project of equipment and materials.And be based on the CAP1400 units of China's independent research on the basis of AP1000, then to main steaming
Vapour pipe penetration proposes requirement higher.In order to avoid to installed in process duct and penetration piece end socket in protection sleeve pipe it
Between butt weld carry out inservice inspection, it is desirable to nuclear power station main steam penetration piece, the end socket of main feedwater penetration piece and process duct are adopted
Shaped with the mode of solid forging.
Forging technology, although prepared by the production for being used for nuclear power important component without exception, technique is also mature on the whole,
Typical material undergo macroscopic material phase constitution inevitably occur when Q-tempering is heat-treated on the basis of forging it is uneven etc.
Problem.And estimate in terms of result from the final crystal grain of the technique, it is general only at 5-7 grade or so, pair it is desired that by further carefully
Change crystal grain to improve mechanical property especially intensity and toughness combination property, the technique has very big bottleneck.On the other hand, main steaming
Vapour penetration piece bore is big (process duct external diameter=1067mm, end socket external diameter=1524), technique length of tube it is big (process duct overall length=
4500).And main steam penetration piece process duct boring (internal diameter=956.8) is emptied, it is necessary to pass through machining, there is machining
Amount is big, the low shortcoming of forging utilization rate.
Therefore, how to develop fine grain, organize, and the good material of comprehensive mechanical property and monolithic molding side
Method is the difficult point and important development direction that need to be captured.
The content of the invention
In view of this, it is a primary object of the present invention to, there is provided it is a kind of efficiently, low cost, with excellent mechanical performances
CAP1400 main steam pipe penetration piece electric smelting manufacturing process.
To reach above-mentioned purpose, penetration piece electric smelting manufacturing process of the invention is multiple using arc heat, resistance heat, electroslag heat
The high energy thermal source for closing, melts the raw metal silk material of continuous conveying, the Layer by layer solidification stack shaping manufacture metal on base material
Component；
Electric smelting head is connected to two poles with base material, raw metal silk material is delivered to via conveying mechanism and electric smelting head during shaping
Substrate surface, under the accumulation protection of graininess auxiliary material, produces electric arc, melt portions heap to apply auxiliary material shape between raw material silk material and base material
Into melting slag bath, electric current flows through raw material silk material and melting auxiliary material slag bath forms resistance heat and electroslag heat, arc heat, resistance heat,
Raw material silk material is melted under electroslag three kinds of hot composite high-energy Sources of heat, local molten bath is formed in substrate surface, lasting conveying
Raw material silk material and auxiliary material, the hierarchy slicing data according to formed parts, using computer controls electric smelting head and the relative shifting of base material
It is dynamic, realize that molten bath quick cooling Layer by layer solidification on base material is piled up, final shaping CAP1400 main steam pipe penetration pieces.
In the present invention, according to the requirement of ASME SA336GrF22CL3 standards, the standby raw metal silk material C used of electrically smelting contains
Amount 0.08-0.12%, electric smelting is shaped workpiece material C content 0.04-0.08%, grain size 7-10 grades.
In the present invention, control base material or deposit preheating with interlayer temperature be 120~400 DEG C, electric smelting head and base material
Relative moving speed be 300~800mm/min, realize the rapid solidification in molten bath, thus obtain crystal grain it is fine and closely woven, without it is macroscopical partially
Analysis, the material of even tissue, greatly improve the mechanical properties such as plasticity, toughness and the high-temerature creep of Forming Workpiece.
In the present invention, during successively shaping, raw material thread forms molten bath on lower metal surface, and molten drop is with jet
Form makes double layer of metal form one into solidification behind molten bath, realizes layering shaping, overall fusion, it is ensured that shaping barrel components
Overall performance.
In the present invention, single electric smelting head is 20~50Kg/h to raw material silk material melting efficiency, is imitated to improve accumulation in addition
Rate realizes Quick-forming, and the quantity of electric smelting head can on demand be adjusted to 1~100, when many electric smelting head is arranged, adjacent electric smelting
Head spacing is 50~500mm.
In the present invention, base material can be carbon steel or alloy steel material, substrate sizes, shape and penetration piece inner wall size shape
Shape is matched, and thickness is not less than 5mm, is removed in follow-up machining.
The present invention has broken away from the constraint of the frock, mould and specific purpose tool of complexity；Shaping is near net-shaped blank, after production
Only need on a small quantity finish, greatly simplify manufacturing procedure, shorten production life cycle；Workpiece formed thereby has the conventional forging process that matches in excellence or beauty
Mechanics and chemical property, the performance such as intensity, toughness, anti-corrosion are very prominent；The monolithic molding of penetration piece is realized simultaneously, is broken through
The limitation of conventional forging process technology, substantially increases efficiency, saves cost.
Brief description of the drawings
Figure 1A is the principle schematic for illustrating the electric smelting method in specific embodiment；
Figure 1B is the partial enlarged drawing near position shown in A in Figure 1A；
Fig. 2 is the main steam pipe penetration piece electric smelting manufacturing process schematic diagram for illustrating the CAP1400 in embodiment.
Specific embodiment
Specific embodiment of the invention is illustrated with reference to the accompanying drawings.Figure 1A is for illustrating specific embodiment
In electric smelting method principle schematic；Figure 1B is the partial enlarged drawing near position shown in A in Figure 1A.Due to being schematic diagram,
Thus, part is schematical in figure, and its true form and size relationship etc. are not limited by the illustration.
The manufacturing process is to melt and successively (being the state being accumulated to during n-th layer shown in Fig. 1) accumulation raw material silk material 1
On basic material 2, so as to ultimately form required hardware.
Operation is embodied is：
A. wire feeder 5 is delivered to the surface of the base material 2 being positioned on workbench 21 by raw material silk material 1, is covered thereon by sending
The graininess auxiliary material of the conveying of powder mechanism 4.
B. startup power supply 12, supply voltage makes to be formed between raw material silk material 1 and base material 2 electric arc 9 and produces the arc heat, arc heat to make
Partial supplementary material 3 is melted, and forms auxiliary material slag bath 8, and electric current flows through raw material silk material 1 and forms resistance heat via electric smelting first 6, and by melting
Slag bath 8 forms electroslag heat, and three kinds of thermals source are composited high energy thermal source, and melt raw material silk material forms molten bath 11 on the surface of base material 2.
C. relative movement of the control electric smelting first 6 with base material 2 and the temperature of base material 2, realize that molten bath 11 exchanges heat with base material and solidify
Deposition.
D. wire feeder 5 continues transferring raw material silk material 1 and auxiliary material 3 with powder feeding mechanism 4, and molten bath 11 and base are covered in auxiliary material 3
In the state of material 2, raw material silk material 1 is successively deposited on base material 2, final Forming Workpiece.
Wherein, (numerical simulation, Mathematical Modeling) the hierarchy slicing data control of control device (computer) according to Forming Workpiece
Electric smelting processed first 6 and the relative movement mode of base material 2.
Electric smelting tip electrode connects just in present invention diagram, and workpiece connects to bear only makees signal effect, it is also possible to which electric smelting head connects negative, work
Part connects just, or takes AC power.
In the present invention, good high energy thermal source is formed in order to ensure, especially for producing sufficient electroslag heat, can be with
Suitably adjust the parameters such as relative moving speed of composition, the diameter of raw material silk material, electric current, base material and raw material silk material of auxiliary material.
In the present invention, the form of raw material thread 1 can be pole shape, banding, real core or medicine core；Raw material thread 1 it is straight
Footpath can be dimensioned so as to 2~8mm according to Forming Workpiece；Different according to the diameter of silk material 1, the length for stretching out electric smelting head (is powered
Length) it is 20mm~150mm.
In the present invention, the cladding thickness of auxiliary material 3 is 15mm~120mm, and the effect using auxiliary material 3 includes：Covering electric arc 9,
Prevent electric arc from splashing；Covering molten bath 11, completely cuts off air, makes molten pool metal from the infringement of oxygen, nitrogen, hydrogen etc. in air；To molten bath
Metal forms insulation；The removal of impurity is gone during metallurgical reaction, alloy is mixed；The slag bath 8 (skull 7) of formation is mechanically protected
The well shaping etc. of deposited metal 10.
The composition of auxiliary material 3 includes oxide or oxide and halide, because auxiliary material 3 participates in melt tank reaction, adjusts work
Part (hardware, product) composition, thus according to the composition and efficiency requirements of the hardware to be formed, can be in auxiliary material
Addition alloy powder and/or elemental metals powder, reduce production cost.
In addition, in C operations, the behaviour for reclaiming the skull 7 that remaining auxiliary material and removal slag bath 8 solidify and formed can be attached
Make.During removal, machine removal can be started at the relative movement rear 400mm~500mm of raw material thread 1 or artificial removal makees
Industry.
Using the electric smelting manufacturing process of present embodiment, raw material thread utilization rate is close to 100%；Compared to existing process technology
(forging, casting etc.), manufacturing process is few (heat treatment that need not be complicated), cycle is short, efficiency high, the machining of hardware
Surplus is very small, while reducing the finishing time and having saved substantial amounts of material.
【Embodiment】
The description of this example makes the main steam pipe penetration piece process of CAP1400, the main steaming by the molten manufacturing process of Horizontal electric
The basic structure of steam pipe penetration piece is that have a flange part on cylinder, and material is 21/4Cr1Mo, with reference to ASME
SA336GrF22CL3 standards requirement, the equipment for being used includes：
(1) revolving support platform；
(2) electric smelting power supply；
(3) electric smelting head；
(4) automatic wire feeding device；
(5) auxiliary material automatic transport and auxiliary material automatic recycling device；
(6) heater；
(7) cooling device；
(8) base material (Q235A steel plates are rolled)；
(9) control device (computer).
Fig. 2 is to schematically illustrate figure for represent the electric smelting manufacturing process of the present embodiment, and power supply, automatic is eliminated in figure
The devices such as wire feeder.Material power parameter is as follows：
1) (the C of raw material silk material 101:0.11-0.12%, other elements are consistent with SA336GrF22CL3), diameter 5mm；
2) auxiliary material 301 of special development, composition is 20%CaO+MgO；45%AL2O3+MnO；25%SiO2+TiO；10%
CaF2；
3) electric smelting head quantity：59 electric smelting first 401, electric smelting power supply is dc source, and connecing power supply using electric smelting first 401 bears
Pole, base material 201 connects positive source (so connecing, can greatly improve processing efficiency)；
4) electric smelting technological parameter is：Electric smelting electric current 600A, electric smelting voltage 32V, electric smelting first 401 is relatively moved with base material 201
400~600mm/min of speed (molten bath translational speed).
Barrel components are made using hardware electric smelting manufacturing process, implementation step is as follows：
(1) axis horizontal of columnar base material 201 is configured, and is supported on revolving support platform, by 59 electric smelting heads
Divide three parts uniform (respectively 2 (1-2), 6 (3- the 8th), 51 (9- the 59th)) in place section, in
Centre control device determines exact position and movement.Electric smelting head is transversely arranged on the top of base material 201, and adjusts each electric smelting head
With the distance on the surface of base material 201 (outer peripheral face), and the starting point of electric smelting is chosen；
(2) raw material silk material 101 and auxiliary material are delivered into the surface of base material 201, startup power supply imports high energy thermal source, melt raw material
Silk material and auxiliary material, while rotate base material 201, (each layer is by the multiple tracks that axially arranges to start first of ground floor of each electric smelting head
Constitute) electric smelting deposition；
(3) after a segment distance is formed between electric smelting first 401 and electric smelting starting point, start to start auxiliary material retracting device by it not
The auxiliary material of fusing is withdrawn, and exposes skull and is removed, and (accumulation) is deposited in order to lower electric smelting together；Subsequent start-up cooling dress
Put or heater is cooled down or heated to electric smelting deposited metal, (refer to base material 201, other layers during ground floor by its matrix
When refer to preceding layer deposit) temperature control at 200~300 DEG C；
(4) when base material 201 rotates a circle completes first electric smelting deposition, under control of the control means, all electric smelting
First 201 are turned left the molten road width distance of rectilinear movement 3/4 simultaneously, and the electric smelting deposition formation of ground floor second, this mistake are started afterwards
Overlap joint is good between ensureing its left and right circle road in journey；
(5) after the completion of second, repeat step (4) completes the shaping that other electric smelting deposit road again, last when reaching
At one, last one end point of its adjacent electric smelting head will be overlapped well with first starting point, so that complete the electricity of ground floor
Molten deposition；
(6) after the electric smelting for completing ground floor is deposited, all electric smelting head one layer of deposit thickness of automatic lifting (i.e. after layer) it
Highly, first electric smelting deposition of the second layer is started, the end point of ground floor electric smelting head is the starting point of first of the second layer,
Successive sedimentation；
(7) after the completion of first electric smelting of second layer deposition, all electric smelting heads are while the molten track pitch of rectilinear movement 3/4 of turning right
From, at the same each electric smelting head adjust automatically its distance between with base material, to ensure the stability of electric smelting, start second layer second
Electric smelting deposition, overlap joint is good between making its left and right circle road；
(8) when second layer second electric smelting deposition completion is completed, repeat step (7), then complete other electric smelting depositions
Road, when reaching last one, last one end point of its adjacent electric smelting head will be overlapped well with first starting point, so that it is complete
Electric smelting into the second layer is deposited；
(9) repeat step (6) is to step (8), then completes other electric smelting sedimentaries, during this, adjacent electric smelting sedimentary
The moving direction of electric smelting head can be with conversely, wherein 9-59 numberings electric smelting head (has computer CAD to cut into slices to control after ulking thickness is completed
System), it is stopped, 1-2 numberings are stopped after completing to need ulking thickness, and last 3-8 completes ulking thickness, final continuous electricity
Molten deposition forms whole penetration piece component 501.
After electric smelting shaping, base material 201 is ordinary carbon steel, is removed in follow-up machining.
The present embodiment greatly improves forming efficiency due to being multiple (59) electric smelting monolithic moldings arranged side by side；
Naturally also electric smelting head quantity and arrangement can be adjusted according to customer requirement.
Claims (5)
1. a kind of CAP1400 main steam pipes penetration piece electric smelting manufacturing process, its feature
It is：
The method is the high energy thermal source being composited using arc heat, resistance heat, electroslag heat, melts the raw metal of continuous conveying
Silk material, the Layer by layer solidification stack shaping manufacture hardware on base material；
Electric smelting head is connected to two poles with base material, raw metal silk material delivers to base material via conveying mechanism and electric smelting head during shaping
Surface, under the accumulation protection of graininess auxiliary material, produces electric arc, melt portions heap to apply auxiliary material and form molten between raw material silk material and base material
Melt slag bath, electric current flows through raw material silk material and melting auxiliary material slag bath forms resistance heat and electroslag heat, in arc heat, resistance heat, electroslag
Raw material silk material is melted under hot three kinds of hot composite high-energy Sources, local molten bath is formed in substrate surface, continue transferring raw material
Silk material and auxiliary material, the hierarchy slicing data according to formed parts, using computer controls electric smelting head and the relative movement of base material, reality
Existing molten bath quick cooling Layer by layer solidification on base material is piled up, final shaping CAP1400 main steam pipe penetration pieces；
Electric smelting is shaped workpiece material C content 0.04-0.08%, grain size 7-10 grades；
The base material provides frock support for Forming Workpiece, is shaped as cylindrical shape, and wall thickness is not less than 5mm, in follow-up machining
Removal.
2. CAP1400 main steam pipes penetration piece electric smelting manufacturing process according to claim 1, it is characterised in that：
According to ASME SA336GrF22CL3 standards, the standby raw metal silk material C content 0.08-0.12% used of electrically smelting.
3. CAP1400 main steam pipes penetration piece electric smelting manufacturing process according to claim 1, it is characterised in that：
Different according to silk material diameter, the electric current in power parameter is 200A~1500A, and voltage is 20V~50V, and power supply is direct current
Or AC power, when using dc source, electric smelting head connects negative or positive electrode.
4. CAP1400 main steam pipes penetration piece electric smelting manufacturing process according to claim 1, it is characterised in that：
Required according to Forming Workpiece, base material or deposit are heated or cooled, the table of control base material or deposit layer
Face temperature is 120 ~ 400 DEG C.
5. CAP1400 main steam pipes penetration piece electric smelting manufacturing process according to claim 1, it is characterised in that：
According to formed parts size and efficiency requirements, the quantity set of electric smelting head is 1~100, adjacent during many electric smelting head arrangements
Electric smelting head spacing is 50~500mm.
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| CN201410677014.7A CN104651834B (en) | 2014-11-21 | 2014-11-21 | CAP1400 main steam pipe penetration piece electric smelting manufacturing process |
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| CN201410677014.7A CN104651834B (en) | 2014-11-21 | 2014-11-21 | CAP1400 main steam pipe penetration piece electric smelting manufacturing process |
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| CN104651834B true CN104651834B (en) | 2017-05-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526171B (en) * | 2014-11-04 | 2016-10-12 | 南方增材科技有限公司 | Hardware electric smelting manufacturing process |
| CN106466765A (en) * | 2016-08-31 | 2017-03-01 | 南方增材科技有限公司 | The electric smelting manufacturing process of ultra supercritical low pressure rotor |
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| CN106466753A (en) * | 2016-08-31 | 2017-03-01 | 南方增材科技有限公司 | Nuclear plant pressure vessels cylinder electric smelting manufacturing process |
| CN106624400A (en) * | 2016-08-31 | 2017-05-10 | 南方增材科技有限公司 | Hydrogenation reactor barrel electric-smelting forming method |
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| CN106271143A (en) * | 2016-08-31 | 2017-01-04 | 南方增材科技有限公司 | CAP1400 main steam pipe penetration piece electric smelting manufacturing process |
| CN106956003B (en) * | 2017-03-23 | 2019-07-26 | 南方增材科技有限公司 | A kind of metal cylinder electric smelting increasing material manufacturing system |
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| US3985995A (en) * | 1973-04-19 | 1976-10-12 | August Thyssen-Hutte Aktienges. | Method of making large structural one-piece parts of metal, particularly one-piece shafts |
| CN2590713Y (en) * | 2002-12-05 | 2003-12-10 | 上海气焊机厂 | Full-automatic roller build-up welding machine |
| CN102189316A (en) * | 2010-03-11 | 2011-09-21 | 上海一钢机电有限公司 | Submerged-arc welding overlaying repairing method for stainless steel hot rolled delivery roll |
| CN103009015A (en) * | 2013-01-13 | 2013-04-03 | 邯郸市永固冶金备件有限公司 | Method for manufacturing double metal composite wear-resistant metallurgical rollers |
| CN103846571A (en) * | 2014-03-26 | 2014-06-11 | 锦州天鹅焊材股份有限公司 | Welding wire for submerged-arc welding of high-efficiency X100 pipeline steel and application of welding wire |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3985995A (en) * | 1973-04-19 | 1976-10-12 | August Thyssen-Hutte Aktienges. | Method of making large structural one-piece parts of metal, particularly one-piece shafts |
| CN2590713Y (en) * | 2002-12-05 | 2003-12-10 | 上海气焊机厂 | Full-automatic roller build-up welding machine |
| CN102189316A (en) * | 2010-03-11 | 2011-09-21 | 上海一钢机电有限公司 | Submerged-arc welding overlaying repairing method for stainless steel hot rolled delivery roll |
| CN103009015A (en) * | 2013-01-13 | 2013-04-03 | 邯郸市永固冶金备件有限公司 | Method for manufacturing double metal composite wear-resistant metallurgical rollers |
| CN103846571A (en) * | 2014-03-26 | 2014-06-11 | 锦州天鹅焊材股份有限公司 | Welding wire for submerged-arc welding of high-efficiency X100 pipeline steel and application of welding wire |
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| CN104651834A (en) | 2015-05-27 |
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