CN1068057A - Multi-layer welding process with hard metal - Google Patents
Multi-layer welding process with hard metal Download PDFInfo
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- CN1068057A CN1068057A CN92100401A CN92100401A CN1068057A CN 1068057 A CN1068057 A CN 1068057A CN 92100401 A CN92100401 A CN 92100401A CN 92100401 A CN92100401 A CN 92100401A CN 1068057 A CN1068057 A CN 1068057A
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- welding
- high rigidity
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- rigidity metal
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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
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
- B23K35/327—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C comprising refractory compounds, e.g. carbides
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
In order on a kind of base metal, to implement the multilayer welding to form the overlay cladding of big thickness with the metal of higher hardness, provide a kind of welding procedure: when being welded to base metal surperficial with the high rigidity metallic multilayer, make heat input value J be limited in 2000 to 6000 joules/cm range; Above-mentioned heat input value J calculates with formula, and be limited in any time that interlayer temperature is not higher than 300 ℃, so that on the welding bead of deposited metal, produce even vertical of a large amount of directions with welding bead, the fine crack that disperses, thereby the remaining welding stress that exists in the overall stack layer has been discharged basically, and can not occur causing the big crackle that peels off in welding bead part.
Description
The present invention relates to a kind of be used for the high rigidity replating forms the technology of high abrasion resisting material to the base metal surface.
Existing in the past many kinds of high-abrasive materials are applied in various machine of each industrial circle, are almost used in all parts and part usually by the technology that those metals are implemented, and are contained in roller bearing, running roller, roller-way segment on the edger roll machine such as orientation separately.Hopper, chute liner or the like.For example be used for the parts that parts, grating cement clinker or the blast-furnace slag of grating boiler of power plant coal are used, and the surface of these parts may be subjected to serious abrasion and wearing and tearing owing to contact with the coarse grain raw material.But the whole element that is not each parts of requirement is all wear-resisting, and only requires that a submeter mask that contacts with raw material has such wearability just enough.So, multilayer high rigidity metal is soldered to requires wear-resisting surface, just in time can reach the purpose that keeps wearability.In addition, because milling train work when contact surface weares and teares already, also can further be implemented the multilayer welding on the surface of having worn and torn, make the surface obtain repairing.
Generally, the contact surface area that requirement has wearability is sizable, therefore, no matter it is initial built-up welding or the repairing that adds.From economic point of view, need effective welding basically.Therefore, usually said full-automatic welding process, such as the carbon dioxide welding, metal inertia gas welding, submerged-arc welding or the like generally are applied to the built-up welding purposes.
In order to form a wearing face with the bead-welding technology of mentioning, certainly, the deposited metal of higher hardness can obtain better wearability.Yet, as everyone knows, existing a major issue is: high more its toughness of deposited metal hardness is just low more, this has just brought when multilayer is welded, can not bear the weak point of shrinkage stress, finally cause easy generation underbead crack, this problem is particularly outstanding in being commonly referred to be the base metal that is not suitable for welding.
When deposited metal hardness is higher, increase owing to above-mentioned underbead crack occurs, the possibility that overlay cladding peels off just increases.Therefore, in prior art, although the wearability deficiency of overlay cladding, its hardness must be limited in and not be higher than 600 Vickers hardnesses, and in addition, the thickness of overall stack layer must be limited in layer 2-3 (6 to 10 millimeters).This has just produced another problem, and promptly wear-resisting section thickness is inevitable very little.
In order to overcome these shortcomings above-mentioned, before this, several imaginations have been proposed, for example,, before built-up welding work, be preheating to 250-600 ℃ earlier in order to prevent to peel off, in addition, keep high temperature during being used in built-up welding, the deficiency of this compensation toughness.Also have a kind of trial to be, postwelding is put into the built-up welding section 600 to 700 ℃ burner hearth immediately and is annealed, to eliminate welding stress.Yet when practical operation, the high temperature of above-mentioned high temperature preheating welding down is very difficult.Promptly use under the high temperature annealing can eliminate welding stress, but still residual another problem that repair layer hardness has been reduced.
In order to solve crack problem, done another kind of trial, promptly can obtain the welding procedure of high rigidity metal and respectively repeat with a kind of welding with metal of high tenacity with a kind of, form a kind of sandwich construction (the early stage publication communique of Japan (examination) 56-71578 number) or in this trial, change welding condition periodically, so that welding weld width size respectively changes, thereby at the little section place of weld width, produce weld crack (the early stage disclosed patent gazette of Japan (not examination) 60-21070 number), a kind of trial has also been proposed, in this attempts, constitute many grooves and add the exhibiting high surface hardfacing, collapse more that groove and its boss section place produce weld crack (the early stage disclosed patent gazette of Japan (examination) 60-174266 number) artificially so that extend at welding bead in the direction of horizontal these grooves that collapse.
Really, top any prior art can play the certain effect that addresses these problems, but still the weak point that exists some to solve.That is: in first prior art (the early stage disclosed patent gazette of Japan (not examination) 56-71578 number), because another layer alternately accumulated deposition that has the high-wearing feature layer and wear no resistance, much less, this structure compares with the structure of being made up of wearing layer fully, and obviously its wearability is inferior.Same in second above-mentioned prior art (the early stage disclosed patent gazette of Japan (examination) 60-21070 number), this technology, the significant of saying so theoretically, but the problem that has a reality technically, this problem are to be difficult to be identified for to make the width of welding welding bead to increase and the pitch of dwindling and crackle is evenly distributed by the distance of dwindling between a crackle and another crackle.For example, though, want that making the crackle pitch of dispersion is 5 blessing rice, in fact technically be difficult to realize this point, the result is because pitch is big, make the opening of each crackle excessive, and might be in the welding bead of such pitch residual welding stress be arranged, finally make welding bead be not enough to avoid localized delamination, (the early stage disclosed patent gazette of Japan (not examination) 60-174266 number) mainly is to provide many fine recesses on such as the large tracts of land inner lining surface under last prior art situation, this requirement not only bothers, and after equipment uses, repair when recovering wearability, repeat at the very start, almost be impossible.
The present invention is resolved several problem discussed above, and main purpose is because the localized delamination that underbead crack causes when preventing the welding of the high metal firmly of built-up welding Duan Zaiyong enforcement multilayer.
Another object of the present invention is the composite bed that constitutes high hard metal, and the hardness in this composite bed is higher than 600 Vickers hardnesses, and has best thickness, is not subjected to the restriction of the conventional built-up welding number of plies, and conventional thickness is limited in 2 to 3 layers usually.
Further object of the present invention provides a kind of overlaying method, and the step of this method is: preheating at high temperature before implementing built-up welding keeps between high level temperature and do not need to discharge remaining welding stress after built-up welding in weld deposit process.
A further object of the invention provides the general service of the multiple-bead deposit technology that a kind of bonding machine of knowing of a kind of usefulness is enough to implement, used bonding machine only need be made part and improve, and need not any special work or additional device, special technique or complicated welding control device.
In order to realize the above object, in the step that comprises with the block welding technique of high rigidity metal of the present invention: multilayer is being carried out when welding with the high rigidity metal in a base metals surface, limit hot input value J in 2000 to 6000 joules/cm range, hot input value J recited above calculates with following formula:
J＝60×I×E/V
In the formula: J is hot input value (joule/centimetre)
E is arc voltage (volt)
I is welding current (ampere)
V is that speed is sent out in weldering
And the restriction interlayer temperature sometimes all is not higher than 300 ℃ so that on the welding bead of deposited metal, produce evenly a large amount of and disperse, and the perpendicular microcrack of welding bead direction.
Welds types according to the rules preferably adopts a kind of full automatic open arc welding machine, and this bonding machine uses flux-cored wire usually, and adopts a kind of high speed wire feed unit in this welding procedure, and its feed speed can be high to 3000 centimeters/minute.
Consider high rigidity metal used in bead-welding technology, require its hardness to surpass 600 Vickers hardnesses at least, the so not only built-up welding number of plies is not restricted especially but also its thickness allows freely to determine, in order to satisfy these requirements, the high rigidity metal of preferably mentioning is grouped into by following one-tenth: (1) carbon: 3.0 to 7.0%, silicon: 0.5 to 2.0%, manganese: 0.5 to 4%, chromium: 20.0 to 35.0%; (2) select wherein a kind of composition at least: molybdenum, tungsten, vanadium, zirconium, titanium, boron, niobium, cadmium, cobalt, aluminium, it is added to previous metal makes its ratio reach 2%; (3) carbon: 3.0 to 7.0%, silicon: 0.5 to 2.0%, manganese: 0.5 to 4.0%, vanadium: 10.0 to 20.0%, tungsten: 3.0% to 10.0%; Or (4) select wherein a kind of composition at least: molybdenum, zirconium, titanium, boron, niobium, cadmium, cobalt, aluminium, join in the previous metal, and its ratio reaches 2%.
In the technology that disposes above of the present invention, fine crackle is also evenly distributed a large amount of the dispersion, and in built-up welding with welding stress in vertical direction, thereby make the stress around the crackle be reduced to the negligible basically degree of the remaining welding stress that makes on the whole welding bead.
Welding stress is one of major issue always before this, because the deposition section is because the result of cooling and curing produces shrinkage stress, and there are notable difference in the resurfacing welding material of built-up welding hard surface layer and the material behavior of base metal (such as intensity, hardness, toughness), thereby concentrate at its interface portion stress, produce big crackle and finally cause peeling off.In order to tackle this situation, several imaginations have been proposed, as mentioned above reaching makes crackle evenly distribute artificially.The present invention is not higher than 300 ℃ of novel concepts of importing 2000 to 6000 joules/cm range with restriction heat by the restriction interlayer temperature and has realized this desired function.
Usually known, on gratifying low toughness meaning, for preventing big crackle, higher interlayer temperature is more satisfactory in welding process.For such purpose, be the more difficult step that is faced in fact in order to implement preheating at high temperature and in welding process, also to keep high welding temperature always.
The present invention can be regarded as the conversion of such general concept, in addition, about heat input joule, below formula be a law of knowing:
J＝60×I×E/V
In the formula: J is hot input value (joule/centimetre)
E is arc voltage (volt)
I is welding current (ampere)
V is a speed of welding
In fact, the heat input of being calculated by top formula changes with welding method is different, and as showing shown in the I, but any and value of the presently claimed invention (2000 to 6000 joules/centimetre) in these numerical value of listing in this table have very big-difference.
Heat import-restriction according to the present invention is being not less than 2000 joules/centimetre, because if be lower than the input of this heat since with the electric arc deposite metal to dissolve speed low, thereby can not carry out built-up welding basically.On the other hand, if the heat input is above 6000 joules/centimetre, each bead thickness that is obtained by built-up welding can become excessive, thereby enlarged the gap between a crackle and another crackle, thereby, make on each position to produce big and a dark crackle, this can cause the residual stress in the welding bead between each crackle to increase.This crackle develops easily, and final formation peels off.For fear of such shortcoming, the above-mentioned numerical value of Que Dinging is as the upper limit in the present invention.
If interlayer temperature surpasses 300 ℃, can postpone the curing rate of the metal pool of deposition, flaw size increases on the welding bead thereby make, and the minimizing of crackle number causes the residual stress between a crackle and another crackle to increase.In order to overcome this shortcoming, fixed 300 ℃ is the upper limit.
For different with the principle of the solder technology of the routine basically welding procedure that will mention drops into practical application, it would be desirable and adopt following welding equipment.
At first, select for use full-automatic open arc welding to meet sb. at the airport as welding machine, its chief reason of this selection is that weld job is oversimplified, and does not promptly need to add sealing gas, welding agent and similar thing.Thereby simplified equipment and made entire equipment comprise that the assembling of auxiliary weld jig (such as manipulator, locator etc.) becomes simple and easy, equipment is carried easily, and this position of high-abrasive material reparation of situation will must implement to repair with to(for) inaccessible operation place, a distant place is a very big advantage.
Secondly, preferably adopt flux-cored wire as the core wire that is used for full-automatic open arc welding machine.This flux-cored wire is made up of a thin strip steel plate that constitutes hollow pipe, and its hollow parts is equipped with the fine grained alloying element with mixing, deoxidier, and the composition of generation gas forms a root bead bar.Simultaneously, the outer rim steel plate section of this core wire has a specific character, and with the solid wire electrode ratio, current density is very big, thereby its melting speed is very high.
Have, in order to utilize above-mentioned characteristic, be preferably in the high speed welding wire feeding machine that adopts a kind of four wheels to drag in the electroplating equipment wielding machine, this feeding machine feed speed can be high to 3000 centimeters/minute, and replacing conventional feed speed is the feeding machine of 600 centimeters/minute.
Because the flux-cored wire that selection is mentioned in hard-facing, can be selected alloying element, and can select to be suitable for most any composition and/or the hardness of various wear working conditions now from the scope of broad.Noticed that hard-facing permission hardness maximum only is 600 Vickers hardnesses in prior art, the number of plies is 2 to 3 layers, and its thickness is 6 to 10 centimetres.And on the other hand, in the present invention, when implementing same technology and satisfy above-mentioned same welding requirements, under the thickness situation that requires, can form the built-up welding of the high rigidity of 600 to 1000 Vickers hardnesses with the electroplating equipment wielding machine mentioned.
According to built-up welding of the present invention, representational composition can adopt following material: (1) high chromium carbide alloy is such as carbon 3.0 to 7.0%; Manganese 0.5 to 4.0%, chromium: 20.0 to 35.0% material; (2) high vanadium Hardmetal materials, such as carbon: 3.0 to 7.0%, manganese 0.5 to 4.0%.Vanadium: 10.0 to 20.0%, tungsten: 3.0 to 10.0%, preferably according to abrasion condition with one or more elements in the following element: molybdenum, tungsten, vanadium, zirconium, titanium, niobium, cadmium, cobalt, aluminium are added in two kinds of materials mentioning, and its amount reaches 2%.
It is generally acknowledged, the welding material that is used for hard-facing prepares to adopt the alloying element of easy carbonization, and every kind of carbide alloy of being made up of above-mentioned these elements has high rigidity, and the deposition hardness that is obtained by built-up welding almost is directly proportional with the total amount of these carbide alloy, have again, generally almost be directly proportional owing to comprise the deposition hardness of these alloying elements, we can say, high carbon content (carbon: 3.0 to 7.0%) major function of the built-up welding that constitutes high rigidity is implemented with added carbon amount.
Have high cracking sensitivity at this when what medium high carbon and heavy alloyed welding consumed, it is high that the spacing that its crackle occurs is compared with curing rate, and the number that crackle occurs reduces with the annealing process, thereby has reduced the possibility of big crackle appearance.
In the present invention, because joule extremely low in weld period caloric restriction input, and welding process is to carry out at a high speed under temperature between low layer, so the curing rate of deposition becomes very high.Many crackles are evenly distributed, thereby the residual stress major part that is present in the whole weld layer is discharged, avoided causing the big crackle of localized delamination to take place.
In high rigidity metallic multilayer bead-welding technology of the present invention, compare with the prior art that carries out for same purpose, can obtain the more overlay cladding of high rigidity and bigger thickness, the wearability and the life-span of the section of built-up welding simultaneously improve significantly.Moreover, because speed of welding is very high, also improved welding efficiency.Owing to the designs simplification of electroplating equipment wielding machine itself, make it to carry easily in addition, thereby make repair can expand to scene at a distance.
In addition, welding procedure of the present invention is to implement by the deposited metal of built-up welding high rigidity layer by layer on the deposited metal of high rigidity, thereby constitute many layers, technology of the present invention not only can be applicable to have on the base metal of soft metal of good welds, and, for example can be applied to high-carbon casting material (such as high nickel cast iron) with the reparation form easily.
Other characteristics of the present invention and superiority narration process with reference to the following drawings will become more clear.
In the accompanying drawings, constituted the part of present patent application.
Fig. 1 is a front view, illustrates according to one embodiment of present invention, a certain position in the microphoto of the metal structure of obtaining.
Fig. 2 is a microphoto, and the metal structure of taking from A-A line among Fig. 1 is shown.
Fig. 3 is one the microphoto of taking from the metal structure of B-B line among Fig. 1 is shown.
Fig. 4 is the metal structure microphoto of another embodiment of expression.
In one of the present invention is given an example, diameter is 900 millimeters a high chromium carbide alloy wear resistance castings cylinder, be by means of an automatic open arc welding machine, with a kind of high chromium carbide alloy flux-cored electrode tubular electrode, diameter is 3.2 millimeters, be welded in mother metal and be iron and contain carbon: chromium 6.0%: 27% and the base material of other compositions on, its welding condition is:
(1) welding current is 400 amperes
(2) weldingvoltage is 28 volts
(3) translational speed 180 centimeters/minute
(4) interlayer temperature is maximum 300 ℃
(5) the heat input is 3700 joules/centimetre
(6) sealing gas, preheat, back heating: do not have
High chromium carbide alloy wear resistance castings (carbon: chromium 2.7%: 27%) set up comparative sample 1 with the base metals of aforesaid sample 1, with test material, use coating arc welding process according to one of prior art to carry out hard-facing and set up comparative sample 2 with 600 Vickers hardnesses.
Then, aforesaid sample 1, comparative sample 1 stand rubber wheel abrasion test (RWAT) with 2 under identical experimental condition.Table 2 illustrates experimental condition, and table 3 illustrates result of the test.
Table 2
(a) load on the sample is 8.8 kilograms
(b) rotation 6000 of friction pulley
(c) rotating speed 120 revolutions per minute
(d) No. 6, abrasive material quartz sand
(e) abrasive material feed quantity 300 Grams Per Minutes
(f) specimen size 20 * 20 * 50 (millimeter)
Table 3
The wear-resisting multiple of amount of abrasive abrasive material
(comparative sample 2:100)
Knowing from table 3, is the twice of prior art hard-facing according to the wearability of that sample of the present invention.
Fig. 1 illustrates a position, and the microstructure microphoto of sample 1 is shown.Fig. 2 is a microphoto of taking from the A-A line section of Fig. 1, finds out from photo, and the carbide alloy that resembles meter shape crystalline solid is grown to a direction.Fig. 3 is a microphoto of taking from the B-B line section of Fig. 1, finds out that from figure the carbide alloy that resembles acicular crystals is grown thick and fast.Fig. 4 is the microphoto of the metal structure of another sample, and in this sample, vertical cylinder built-up welding has 30 millimeters thickness and comes into operation, and as seen from the figure, is uniform-distribution with microcrack from the teeth outwards, 5 millimeters of crackle phase spacings.
Claims (7)
1, a kind of block welding technique of high rigidity metal, the step that comprises is: when the high rigidity metal was received base metal surfaces with multilayer welding, joule J was in 2000-6000 joule/cm range in the caloric restriction input, and the calculating of above-mentioned heat input value J is used:
J=60×I×E/V
In the formula: J is input calorie value (joule/centimetre)
E is arc voltage (volt)
I is welding current (ampere)
V is a speed of welding
And whenever the restriction interlayer temperature all is not higher than 300 ℃, so that produce microcrack evenly a large amount of and that disperse on the welding bead of deposited metal, its direction and welding bead are perpendicular.
2, according to the block welding technique of a kind of high rigidity metal of claim 1, wherein adopt full-automatic open arc welding technology.
3, according to the block welding technique of the high rigidity metal of claim 2, wherein adopt flux-cored wire.
4,, adopt feed rate can reach the high speed wire feed unit of 3000 centimeters/minute according to the block welding technique of a kind of high rigidity metal of claim 3.
5, according to the block welding technique of a kind of high rigidity metal of claim 1, the hardness of the high rigidity metal of wherein used built-up welding surpasses 600 Vickers hardnesses at least, and the not only built-up welding number of plies is not subjected to special restriction, and its thickness allows freely to determine.
6, according to a kind of high rigidity metallic multilayer welding procedure of claim 5, wherein the high rigidity metal of built-up welding is formed thus: (1) carbon: 3.0 to 7.0%, and silicon: 0.5 to 2.0%, manganese: 0.5 to 4%, chromium: 20.0 to 35.9%; Or (2) select wherein a kind of composition at least: molybdenum, tungsten, vanadium, zirconium, titanium, boron, niobium, cadmium, cobalt, aluminium, the ratio of adding reaches 2%.
7, according to a kind of high rigidity metallic multilayer welding procedure of claim 5, wherein the high rigidity metal of built-up welding is formed thus: (1) carbon: 3.0 to 7.0%, and silicon: 0.5 to 2.0%, manganese: 0.5 to 4%, vanadium: 10.0 to 20.0%, tungsten: 3.0 to 10.0%; Or (2) select wherein a kind of composition at least: molybdenum, zirconium, titanium, boron, niobium, cadmium, cobalt, aluminium, the ratio of adding reaches 2%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP181758/91 | 1991-06-25 | ||
| JP3181758A JPH0825017B2 (en) | 1991-06-25 | 1991-06-25 | Multi-layer overlay welding method for high hardness metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1068057A true CN1068057A (en) | 1993-01-20 |
| CN1031384C CN1031384C (en) | 1996-03-27 |
Family
ID=16106377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92100401A Expired - Fee Related CN1031384C (en) | 1991-06-25 | 1992-01-22 | Multi-layer welding process with hard metal |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPH0825017B2 (en) |
| KR (1) | KR100200394B1 (en) |
| CN (1) | CN1031384C (en) |
| AU (1) | AU649745B2 (en) |
| GB (1) | GB2257075B (en) |
| HK (1) | HK53295A (en) |
| MY (1) | MY107653A (en) |
| PH (1) | PH30821A (en) |
| SG (1) | SG22195G (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804709A (en) * | 2010-03-08 | 2010-08-18 | 安徽海螺川崎装备制造有限公司 | Wearing resistant structure of wear resistant piece and repair machining process thereof |
| CN102990194A (en) * | 2012-11-01 | 2013-03-27 | 金钧 | Construction method adopting full-automatic open-arc bead-welding in overall welding |
| CN104245221A (en) * | 2012-03-12 | 2014-12-24 | 西门子能量股份有限公司 | Advanced pass progression for build-up welding |
| CN105195925A (en) * | 2014-06-11 | 2015-12-30 | 上海司迈尔特种合金材料有限公司 | Carbon dioxide arc welding wire with small diameter of 1.6 mm and high alloy content |
| CN112188945A (en) * | 2018-05-23 | 2021-01-05 | 西门子股份公司 | Manufacture welding and maintenance welding of nodular cast iron |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU661910B2 (en) * | 1992-07-09 | 1995-08-10 | Farmland Pty Ltd | Improvements in and relating to hard facing of earth engaging agricultural implements |
| JPH11309596A (en) * | 1998-04-23 | 1999-11-09 | Kurimoto Ltd | Reproducing method of consumable member vertical roll mill |
| SE9903726D0 (en) * | 1999-10-18 | 1999-10-18 | Steinar Gustavsen | Welding with cemented carbide |
| KR100384625B1 (en) * | 2000-12-21 | 2003-05-22 | 주식회사 포스코 | Hardfacing method to remove surface crack |
| FR2931714B1 (en) * | 2008-05-30 | 2010-06-25 | Snecma | CONSTRUCTION OF A PART OF A METAL PIECE BY THE MIG PROCESS WITH CURRENT AND PULSED WIRE |
| CN102312153B (en) * | 2010-07-02 | 2013-02-13 | 北京中煤大田耐磨材料有限公司 | Zirconium-containing high-chromium cast iron-type abrasion-resistant alloy |
| CN105215510A (en) * | 2015-11-17 | 2016-01-06 | 攀枝花钢城集团协力有限公司 | The overlaying method of repair cold-rolling flat support roller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1203846A (en) * | 1968-08-08 | 1970-09-03 | Roman F Arnoldby | Abrasion resistant plates |
-
1991
- 1991-06-25 JP JP3181758A patent/JPH0825017B2/en not_active Expired - Lifetime
- 1991-11-14 AU AU87877/91A patent/AU649745B2/en not_active Ceased
- 1991-11-20 KR KR1019910020656A patent/KR100200394B1/en not_active IP Right Cessation
- 1991-11-22 MY MYPI91002162A patent/MY107653A/en unknown
- 1991-12-13 GB GB9126503A patent/GB2257075B/en not_active Expired - Fee Related
- 1991-12-20 PH PH43688A patent/PH30821A/en unknown
-
1992
- 1992-01-22 CN CN92100401A patent/CN1031384C/en not_active Expired - Fee Related
-
1995
- 1995-02-10 SG SG22195A patent/SG22195G/en unknown
- 1995-04-06 HK HK53295A patent/HK53295A/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804709A (en) * | 2010-03-08 | 2010-08-18 | 安徽海螺川崎装备制造有限公司 | Wearing resistant structure of wear resistant piece and repair machining process thereof |
| CN104245221A (en) * | 2012-03-12 | 2014-12-24 | 西门子能量股份有限公司 | Advanced pass progression for build-up welding |
| CN104245221B (en) * | 2012-03-12 | 2017-04-12 | 西门子能量股份有限公司 | Advanced pass progression for build-up welding |
| CN102990194A (en) * | 2012-11-01 | 2013-03-27 | 金钧 | Construction method adopting full-automatic open-arc bead-welding in overall welding |
| CN105195925A (en) * | 2014-06-11 | 2015-12-30 | 上海司迈尔特种合金材料有限公司 | Carbon dioxide arc welding wire with small diameter of 1.6 mm and high alloy content |
| CN112188945A (en) * | 2018-05-23 | 2021-01-05 | 西门子股份公司 | Manufacture welding and maintenance welding of nodular cast iron |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2257075A (en) | 1993-01-06 |
| GB2257075B (en) | 1994-08-03 |
| JPH0550237A (en) | 1993-03-02 |
| KR100200394B1 (en) | 1999-06-15 |
| AU649745B2 (en) | 1994-06-02 |
| SG22195G (en) | 1995-06-16 |
| KR930000195A (en) | 1993-01-15 |
| CN1031384C (en) | 1996-03-27 |
| JPH0825017B2 (en) | 1996-03-13 |
| MY107653A (en) | 1996-05-30 |
| AU8787791A (en) | 1993-01-21 |
| PH30821A (en) | 1997-10-17 |
| HK53295A (en) | 1995-04-13 |
| GB9126503D0 (en) | 1992-02-12 |
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