CN103486429A - Bead weld alloy wear-resisting tube and bead weld manufacturing method thereof - Google Patents
Bead weld alloy wear-resisting tube and bead weld manufacturing method thereof Download PDFInfo
- Publication number
- CN103486429A CN103486429A CN201310458438.XA CN201310458438A CN103486429A CN 103486429 A CN103486429 A CN 103486429A CN 201310458438 A CN201310458438 A CN 201310458438A CN 103486429 A CN103486429 A CN 103486429A
- Authority
- CN
- China
- Prior art keywords
- wear
- alloy wear
- bead weld
- resisting
- resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 64
- 239000000956 alloy Substances 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000011324 bead Substances 0.000 title abstract 13
- 238000000034 method Methods 0.000 claims abstract description 45
- 238000003466 welding Methods 0.000 claims abstract description 33
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 31
- 238000005552 hardfacing Methods 0.000 claims description 23
- 230000006698 induction Effects 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 150000001722 carbon compounds Chemical group 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 239000010955 niobium Substances 0.000 claims description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000005215 recombination Methods 0.000 claims description 3
- 230000006798 recombination Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000008021 deposition Effects 0.000 abstract description 2
- 238000010790 dilution Methods 0.000 abstract description 2
- 239000012895 dilution Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 238000005272 metallurgy Methods 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- -1 electric power Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000011469 building brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Abstract
The invention provides a bead weld alloy wear-resisting tube and a bead weld manufacturing method thereof. In the bead weld field, the band-electrode submerged arc welding (SAW) technology adopted at home and abroad makes greater progress in dilution rate and deposition rate compared with filament submerged arc welding, with a pressure vessel upsized and highly parameterized day by day, the bead weld technology needs to be developed to be better and more efficient, however, setting of a bead weld machine, a magnetic control device and technological parameters related to the bead weld process is difficult to master. According to the method, the bead weld alloy wear-resisting tube comprises a bead weld wear-resisting layer (1) and a substrate (2), wherein the bead weld wear-resisting layer and the substrate are combined in a metallurgical mode, and the bead weld wear-resisting layer comprises a low-carbon steel plate (3) and alloy wear-resisting layer bodies (4) which are 1-15 in number. The method is used for manufacturing the bead weld alloy wear-resisting tube.
Description
technical field:
the present invention relates to a kind of hardfacing alloy wear-resistant pipe and built-up welding making method thereof.
background technique:
built-up welding is technological method as a kind of economy of material surface modifying and fast, during the manufacture that is applied to more and more widely each industrial department part is repaired.The internal surfaces such as thick-walled pressure vessel of the hydrogenator of petroleum chemical industry, former stream synthesis tower, reactor and nuclear power station all need large-area built-up welding high temperature resistant, the stainless steel lining of the corrosion such as antioxygen and hydrogen sulfide.The seventies, in the field, adopted in a large number band utmost point submerged arc overlay welding (SAW) technology both at home and abroad, this technology has been welded with significant progress than filament submerged arc on rate of dilution and deposition rate, but, along with pressurized container maximizes increasingly, high parameter, impel technique for overlaying to the more efficient future development of high-quality more.Yet the built-up welding welding machine that weld deposit process relates to, magnetic control means, arranging of process parameter are difficult to grasp, especially the accurate control of bead-welding technology parameter is significant to strip electrode electroslag surfacing to weldingvoltage, yet during brownout, tendency with utmost point adhesion mother metal is arranged, when voltage is too high, arc phenomenon obviously increases, molten bath is unstable, splashes and also increases.
summary of the invention:
the purpose of this invention is to provide a kind of hardfacing alloy wear-resistant pipe and built-up welding making method thereof.
above-mentioned purpose realizes by following technological scheme:
a kind of hardfacing alloy wear-resistant pipe, its composition comprises: build-up wear-resistant layer and substrate, described build-up wear-resistant layer and described substrate are by metallurgy combination, and described build-up wear-resistant layer comprises low carbon steel plate and alloy wear-resisting layer.
described hardfacing alloy wear-resistant pipe, the thickness of described alloy wear-resisting layer is 1/3 ~ 1/2 of described build-up wear-resistant layer thickness.
a kind of built-up welding making method of hardfacing alloy wear-resistant pipe, at first, be configured to evanohm and be to lead and add the alloy wear-resisting layer that manganese, molybdenum, niobium, nickel, carbon compound form, and be combined with low carbon steel plate and be made into the build-up wear-resistant layer; Second, adopt special-use heaps welding machine and heating equipment, high hardness self-protection alloy welding wire is travelled forward under the promotion of built-up welder, by described build-up wear-resistant layer, be welded on uniformly on substrate, compound two-layer so that 10 ~ 15 layers again after compound one deck, in recombination process, due to the contraction ratio difference of alloy wear-resisting layer, and evenly horizontal crackle appears; The 3rd, keep carbon compound to be fibrous distribution, fiber direction is vertical with integral surface; The combination property of intensity, toughness and the plasticity of opposing external force is provided by described matrix during work, by described alloy wear-resisting layer, provides and meet the wear-resisting property of specifying the operating mode demand.
the built-up welding making method of described hardfacing alloy wear-resistant pipe, described substrate is elected the sleeve pipe blank as, after the alloy wear-resisting layer is combined with low carbon steel plate and is made into the build-up wear-resistant layer, when described build-up wear-resistant layer being compound to described sleeve pipe blank making the alloy wear-resisting bend pipe, adopt dedicated elbow pushing machine, core and heating equipment, the blank that makes to be enclosed within on mould travels forward under the promotion of pushing machine, is heated at the volley, the process of hole enlargement bending forming alloy bend pipe.
the built-up welding making method of described hardfacing alloy wear-resistant pipe, pick in described sleeve pipe blank process, because the pipe diameter is determined in constancy of volume before and after Plastic Deformation of Metal Materials, the diameter of the sleeve pipe blank adopted is less than elbow diameter, control the deformation process of blank by core, make the compressed metal flow in inner arc place, compensate to other position because of the hole enlargement attenuate, thereby obtain the uniform elbow of wall thickness.
the built-up welding making method of described hardfacing alloy wear-resistant pipe, pick in described sleeve pipe blank process, wall thickness is even, the suitable production in enormous quantities of working continuously, it is the main mould-forming method of carbon steel, alloyed steel elbow, and also be applied in the shaping of Stainless Steel Elbow of some specification, the mode of heating of forming process requires according to formed product and energy scenario is determined the mode that Frequency Induction Heating, high-frequency induction heating, flame heating and reverberating furnace heat; Select the mode of described Frequency Induction Heating, high-frequency induction heating to select the mode of heating that heating collar is multi-turn or individual pen.
beneficial effect:
1. the hardfacing alloy wear-resistant pipe of the present invention's design comprises build-up wear-resistant layer and substrate, and the build-up wear-resistant layer is comprised of low carbon steel plate and alloy wear-resisting layer, and the utilization of alloy wear-resisting layer contains evanohm and also add manganese, molybdenum, niobium, nickel simultaneously.The alloy composition of carbon compound, in alloy structure, carbide is fibrous distribution, fiber direction and Surface Vertical.More than the carbide micro-penetration hardness can reach HV1700-2000, surface hardness can reach HRC58-62.Alloy carbide at high temperature has very strong stability, keeps higher hardness, also has good oxidation resistance simultaneously, at 500 ℃, with interior, fully normally uses.
build-up wear-resistant has very high-wear resistance and better impact property is good, can be cut, bending, welding etc., can take the modes such as welding, plug welding, bolt connection to be connected with other structures, there are the characteristics such as save time, facilitate in the maintenance sites process, be widely used in the industries such as metallurgy, coal, cement, electric power, glass, mine, building materials, brick and tile, compare with other materials, very high cost performance is arranged, be subjected to the favor of more and more industries and producer.
2. the alloy bend pipe that the inventive method relates to is a kind of pipe fitting for the pipeline turning place, utilize dedicated elbow pushing machine, core and heating equipment, the blank that makes to be enclosed within on mould travels forward under the promotion of pushing machine, be heated at the volley, hole enlargement bending forming alloy bend pipe, this pipe-line system accounts for the ratio maximum in whole pipe fittings, is about 80%.Usually, the elbow of different materials or wall thickness is selected to different formation techniquies.The production process of this kind of method is applicable to batch production, and the alloy bend pipe of production is widely used in petroleum gas pipework, natural gas pipeline projects, chemical plant, power plant, shipyard, pharmacy, dairy products, beer, beverage, the industries such as water conservancy.
the accompanying drawing explanation:
accompanying drawing 1 is the structural representation of the hardfacing alloy wear-resistant pipe that the present invention relates to.
embodiment:
embodiment 1:
a kind of hardfacing alloy wear-resistant pipe, its composition comprises: build-up wear-resistant layer 1 and substrate 2, described build-up wear-resistant layer and described substrate are by metallurgy combination, and described build-up wear-resistant layer comprises low carbon steel plate 3 and alloy wear-resisting layer 4.
embodiment 2:
the described hardfacing alloy wear-resistant pipe of embodiment 1, the thickness of described alloy wear-resisting layer is 1/3 ~ 1/2 of described build-up wear-resistant layer thickness.
embodiment 3:
a kind of built-up welding making method of hardfacing alloy wear-resistant pipe, at first, be configured to evanohm and be to lead and add the alloy wear-resisting layer that manganese, molybdenum, niobium, nickel, carbon compound form, and be combined with low carbon steel plate and be made into the build-up wear-resistant layer; Second, adopt special-use heaps welding machine and heating equipment, high hardness self-protection alloy welding wire is travelled forward under the promotion of built-up welder, by described build-up wear-resistant layer, be welded on uniformly on substrate, compound two-layer so that 10 ~ 15 layers again after compound one deck, in recombination process, due to the contraction ratio difference of alloy wear-resisting layer, and evenly horizontal crackle appears; The 3rd, keep carbon compound to be fibrous distribution, fiber direction is vertical with integral surface; The combination property of intensity, toughness and the plasticity of opposing external force is provided by described matrix during work, by described alloy wear-resisting layer, provides and meet the wear-resisting property of specifying the operating mode demand.
embodiment 4:
the built-up welding making method of the described hardfacing alloy wear-resistant pipe of embodiment 3, described substrate is elected the sleeve pipe blank as, after the alloy wear-resisting layer is combined with low carbon steel plate and is made into the build-up wear-resistant layer, when described build-up wear-resistant layer being compound to described sleeve pipe blank making the alloy wear-resisting bend pipe, adopt dedicated elbow pushing machine, core and heating equipment, the blank that makes to be enclosed within on mould travels forward under the promotion of pushing machine, is heated at the volley, the process of hole enlargement bending forming alloy bend pipe.
embodiment 5:
the built-up welding making method of the described hardfacing alloy wear-resistant pipe of embodiment 3 or 4, pick in described sleeve pipe blank process, because the pipe diameter is determined in constancy of volume before and after Plastic Deformation of Metal Materials, the diameter of the sleeve pipe blank adopted is less than elbow diameter, control the deformation process of blank by core, make the compressed metal flow in inner arc place, compensate to other position because of the hole enlargement attenuate, thereby obtain the uniform elbow of wall thickness.
embodiment 6:
the built-up welding making method of the described hardfacing alloy wear-resistant pipe of embodiment 3 or 4, pick in described sleeve pipe blank process, wall thickness is even, the suitable production in enormous quantities of working continuously, it is the main mould-forming method of carbon steel, alloyed steel elbow, and also be applied in the shaping of Stainless Steel Elbow of some specification, the mode of heating of forming process requires according to formed product and energy scenario is determined the mode that Frequency Induction Heating, high-frequency induction heating, flame heating and reverberating furnace heat; Select the mode of described Frequency Induction Heating, high-frequency induction heating to select the mode of heating that heating collar is multi-turn or individual pen.
Claims (6)
1. a hardfacing alloy wear-resistant pipe, its composition comprises: substrate is characterized in that: described build-up wear-resistant layer and described substrate are by solder bond, and described build-up wear-resistant layer comprises low carbon steel plate and alloy wear-resisting layer, and the alloy wear-resisting layer of built-up welding is the 1-15 layer.
2. hardfacing alloy wear-resistant pipe according to claim 1, it is characterized in that: the thickness of described alloy wear-resisting layer is 1/3 ~ 1/2 of described build-up wear-resistant layer thickness.
3. the built-up welding making method of a hardfacing alloy wear-resistant pipe is characterized in that: at first, be configured to evanohm and be to lead and add the alloy wear-resisting layer that manganese, molybdenum, niobium, nickel, carbon compound form, and being combined with low carbon steel plate and being made into the build-up wear-resistant layer; Second, adopt special-use heaps welding machine and heating equipment, high hardness self-protection alloy welding wire is travelled forward under the promotion of built-up welder, by described build-up wear-resistant layer, be welded on uniformly on substrate, compound two-layer so that 10 ~ 15 layers again after compound one deck, in recombination process, due to the contraction ratio difference of alloy wear-resisting layer, and evenly horizontal crackle appears; The 3rd, keep carbon compound to be fibrous distribution, fiber direction is vertical with integral surface; The combination property of intensity, toughness and the plasticity of opposing external force is provided by described matrix during work, by described alloy wear-resisting layer, provides and meet the wear-resisting property of specifying the operating mode demand.
4. the built-up welding making method of hardfacing alloy wear-resistant pipe according to claim 3, it is characterized in that: described substrate is elected the sleeve pipe blank as, after the alloy wear-resisting layer is combined with low carbon steel plate and is made into the build-up wear-resistant layer, when described build-up wear-resistant layer being compound to described sleeve pipe blank making the alloy wear-resisting bend pipe, adopt dedicated elbow pushing machine, core and heating equipment, the blank that makes to be enclosed within on mould travels forward under the promotion of pushing machine, is heated at the volley, hole enlargement bending forming alloy bend pipe.
5. according to the built-up welding making method of the described hardfacing alloy wear-resistant pipe of claim 3 or 4, it is characterized in that: pick in described sleeve pipe blank process, because the pipe diameter is determined in constancy of volume before and after Plastic Deformation of Metal Materials, the diameter of the sleeve pipe blank adopted is less than elbow diameter, control the deformation process of blank by core, make the compressed metal flow in inner arc place, compensate to other position because of the hole enlargement attenuate, thereby obtain the uniform elbow of wall thickness.
6. according to the built-up welding making method of the described hardfacing alloy wear-resistant pipe of claim 3 or 4, it is characterized in that: pick in described sleeve pipe blank process, wall thickness is even, the suitable production in enormous quantities of working continuously, also be applied in the shaping of Stainless Steel Elbow, the mode of heating of forming process requires according to formed product and energy scenario is determined the mode that Frequency Induction Heating, high-frequency induction heating, flame heating and reverberating furnace heat; Select the mode of described Frequency Induction Heating, high-frequency induction heating to select the mode of heating that heating collar is multi-turn or individual pen.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310458438.XA CN103486429A (en) | 2013-10-02 | 2013-10-02 | Bead weld alloy wear-resisting tube and bead weld manufacturing method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310458438.XA CN103486429A (en) | 2013-10-02 | 2013-10-02 | Bead weld alloy wear-resisting tube and bead weld manufacturing method thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN103486429A true CN103486429A (en) | 2014-01-01 |
Family
ID=49826898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201310458438.XA Withdrawn CN103486429A (en) | 2013-10-02 | 2013-10-02 | Bead weld alloy wear-resisting tube and bead weld manufacturing method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103486429A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105478964A (en) * | 2016-02-01 | 2016-04-13 | 哈电集团(秦皇岛)重型装备有限公司 | Surfacing welding technology for large-area anti-corrosion layers of tube plate |
CN105921850A (en) * | 2016-05-31 | 2016-09-07 | 铜陵市东方矿冶机械有限责任公司 | Overlaying abrasion-resistant plate |
CN109048234A (en) * | 2018-10-10 | 2018-12-21 | 福建海山重工有限公司 | Efficient precision machining process for forklift accessories |
CN113566026A (en) * | 2020-10-29 | 2021-10-29 | 广东博盈特焊技术股份有限公司 | Metal composite pipe and manufacturing method thereof |
CN116021239A (en) * | 2023-02-13 | 2023-04-28 | 广东博盈特焊技术股份有限公司 | Preparation method of wear-resistant pipe and wear-resistant pipe |
-
2013
- 2013-10-02 CN CN201310458438.XA patent/CN103486429A/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105478964A (en) * | 2016-02-01 | 2016-04-13 | 哈电集团(秦皇岛)重型装备有限公司 | Surfacing welding technology for large-area anti-corrosion layers of tube plate |
CN105921850A (en) * | 2016-05-31 | 2016-09-07 | 铜陵市东方矿冶机械有限责任公司 | Overlaying abrasion-resistant plate |
CN109048234A (en) * | 2018-10-10 | 2018-12-21 | 福建海山重工有限公司 | Efficient precision machining process for forklift accessories |
CN113566026A (en) * | 2020-10-29 | 2021-10-29 | 广东博盈特焊技术股份有限公司 | Metal composite pipe and manufacturing method thereof |
CN116021239A (en) * | 2023-02-13 | 2023-04-28 | 广东博盈特焊技术股份有限公司 | Preparation method of wear-resistant pipe and wear-resistant pipe |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102465290B (en) | Manufacturing method of double-layer metal composite pipe | |
CN102886593B (en) | A kind of welding method of UHV transmission steel tube tower Q460 high-strength steel steel pipe | |
CN103486429A (en) | Bead weld alloy wear-resisting tube and bead weld manufacturing method thereof | |
CN103464928B (en) | Argon arc cladding material based on self-fused Fe-based alloy powder | |
CN1189259C (en) | Manufacture of bimetallic composite pipe | |
CN103433603A (en) | Equal-strength matching submerged arc welding method for strong-strength P690QL1 steel | |
CN106736033A (en) | G115 heat resisting steel argon-arc welding wires | |
US20140174583A1 (en) | Linepipe with cermet internal liner | |
CN103331327A (en) | Bimetal composite pipe girth welding method | |
Metlitskii | Flux-cored wires for arc welding and surfacing of cast iron | |
CN103752998A (en) | Method for manufacturing high-weather-resistance multi-wire submerged-arc welded steel pipes for marine environments | |
CN102233494B (en) | Stainless steel band electrode electroslag surfacing welding strip and welding flux | |
CN103170810B (en) | Bead-welding method of inner wall of 90-degree bent pipe | |
CN1851007A (en) | Concrete conveying pipe production process | |
CN102162067A (en) | Steel for anticorrosion sucker rods in oil field and production method thereof | |
CN104070271B (en) | 15Cr1Mo1V valve body and WB36 pipe arrangement different steel weld method | |
CN103273213A (en) | High-strength high-toughness submerged arc welding wires | |
CN103495813B (en) | Alloy powder for CO2 gas shielded welding powder surfacing | |
CN101575693A (en) | Method for spraying and preparing high temperature sulfidation resistant alloy layer on the surface of cast iron | |
CN104213118A (en) | Manufacturing method of lining for galvanizing | |
CN109023358A (en) | A kind of the laser melting coating restorative procedure and reparation powder of mine hydraulic support | |
CN104646796B (en) | A kind of overlaying method of low dilution rate | |
CN2547988Y (en) | Bimetallic multiple-unit tube | |
CN103498155B (en) | The Argon arc cladding material of iron-based wearing layer is strengthened for the preparation of spontaneous ceramic phase | |
CN108857137B (en) | Gas shield welding wire for high-strength continuous pipe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C04 | Withdrawal of patent application after publication (patent law 2001) | ||
WW01 | Invention patent application withdrawn after publication |
Application publication date: 20140101 |