CN113862660A - High-compression-resistance butt-welded elbow and machining process thereof - Google Patents
High-compression-resistance butt-welded elbow and machining process thereof Download PDFInfo
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- CN113862660A CN113862660A CN202111060270.8A CN202111060270A CN113862660A CN 113862660 A CN113862660 A CN 113862660A CN 202111060270 A CN202111060270 A CN 202111060270A CN 113862660 A CN113862660 A CN 113862660A
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- 238000003754 machining Methods 0.000 title description 2
- 239000000843 powder Substances 0.000 claims abstract description 180
- 229910052751 metal Inorganic materials 0.000 claims abstract description 102
- 239000002184 metal Substances 0.000 claims abstract description 102
- 238000003466 welding Methods 0.000 claims abstract description 85
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 46
- 239000000956 alloy Substances 0.000 claims abstract description 46
- 238000004372 laser cladding Methods 0.000 claims abstract description 46
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 34
- 239000011701 zinc Substances 0.000 claims abstract description 34
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000010936 titanium Substances 0.000 claims abstract description 29
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 29
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 26
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910000420 cerium oxide Inorganic materials 0.000 claims abstract description 26
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 16
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 34
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 26
- 229910052738 indium Inorganic materials 0.000 claims description 25
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 25
- 238000005253 cladding Methods 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 16
- 238000012216 screening Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000011265 semifinished product Substances 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 abstract description 14
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 11
- 239000002131 composite material Substances 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 238000009835 boiling Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 239000007769 metal material Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 235000020985 whole grains Nutrition 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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Classifications
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- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
- B02C17/08—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container with containers performing a planetary movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
Abstract
The invention discloses a high-pressure-resistance butt welding elbow and a processing technology thereof, and particularly relates to the technical field of butt welding elbows. The invention can effectively strengthen the compression strength of the high-compression-resistance butt welding elbow and the stainless steel pipeline, and can ensure the safety and the stability of the butt welding elbow and the stainless steel pipeline under the high-strength pressure vibration treatment; the titanium metal powder and the aluminum metal powder are matched with each other to form a titanium/aluminum composite layer, so that the compressive strength and the stability of a welding line can be effectively enhanced; the nano cerium oxide and the copper metal powder are doped into the tin metal powder and the silver metal powder, so that the compression resistance and the fatigue resistance of a welding seam can be effectively enhanced; the zinc metal powder can effectively blend other raw materials of the laser cladding alloy layer, the boiling point of zinc is low, the steam pressure is high, zinc is easy to volatilize in the welding process to take away a large amount of heat, and meanwhile, the heat conductivity of zinc is also high, so that the heat of a welding seam is rapidly dissipated.
Description
Technical Field
The invention relates to the technical field of butt welding elbows, in particular to a high-pressure-resistance butt welding elbow and a processing technology thereof.
Background
The butt welding elbow is an elbow formed by hot-pressing or forging steel, and the connection form of the butt welding elbow is that the elbow and a steel pipe are directly butt welded. The butt welding elbow is divided into a long-radius butt welding elbow and a short-radius butt welding elbow according to the curvature radius of the butt welding elbow; according to the angle of the elbow, 45-degree butt welding elbow, 90-degree butt welding elbow, 180-degree butt welding elbow and other elbows with different angles are arranged; the butt welding elbow material comprises: carbon steel, alloy steel, stainless steel. The butt welding elbow can be made of a stainless steel composite steel plate, is formed by pressing through different dies and then is welded into a novel material pipe fitting, and the novel material pipe fitting has the advantages of corrosion resistance, wear resistance and magnetism resistance of stainless steel, and good weldability, formability, drawability and thermal conductivity of carbon steel; can be widely applied to severe environments with harsh working conditions such as corrosion resistance, acid resistance, high strength and the like in the industries such as petroleum, chemical engineering and the like.
The existing welding part of the butt welding elbow has poor compression resistance and is easy to break or damage.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a high pressure resistant butt welded elbow and a processing technology thereof.
A high pressure resistant butt welding elbow comprises the following components by weight percent: 95.60-96.60% of the elbow body, and the balance of the elbow body is a laser cladding alloy layer, wherein the laser cladding alloy layer is uniformly distributed at the end welding part of the elbow body.
Further, the laser cladding alloy layer comprises the following components in percentage by weight: 48.60-49.80% of tin metal powder, 4.40-5.40% of zinc metal powder, 1.20-1.80% of aluminum metal powder, 1.70-2.50% of copper metal powder, 0.80-1.40% of silver metal powder, 19.60-20.60% of indium metal powder, 9.40-10.40% of bismuth metal powder, 0.40-0.60% of nano cerium oxide, and the balance of titanium metal powder.
Further, the paint comprises the following components in percentage by weight: 95.60% of elbow body and 4.40% of laser cladding alloy layer; the laser cladding alloy layer comprises the following components in percentage by weight: 48.60% of tin metal powder, 4.40% of zinc metal powder, 1.20% of aluminum metal powder, 1.70% of copper metal powder, 0.80% of silver metal powder, 19.60% of indium metal powder, 9.40% of bismuth metal powder, 0.40% of nano cerium oxide and 13.90% of titanium metal powder.
Further, the paint comprises the following components in percentage by weight: 96.60% of elbow body and 3.40% of laser cladding alloy layer; the laser cladding alloy layer comprises the following components in percentage by weight: 49.80 percent of tin metal powder, 5.40 percent of zinc metal powder, 1.80 percent of aluminum metal powder, 2.50 percent of copper metal powder, 1.40 percent of silver metal powder, 20.60 percent of indium metal powder, 10.40 percent of bismuth metal powder, 0.60 percent of nano cerium oxide and 7.50 percent of titanium metal powder.
Further, the paint comprises the following components in percentage by weight: 96.10% of elbow body and 3.90% of laser cladding alloy layer; the laser cladding alloy layer comprises the following components in percentage by weight: 49.20% of tin metal powder, 4.90% of zinc metal powder, 1.50% of aluminum metal powder, 2.10% of copper metal powder, 1.10% of silver metal powder, 20.10% of indium metal powder, 9.90% of bismuth metal powder, 0.50% of nano cerium oxide and 10.70% of titanium metal powder.
A processing technology of a high-pressure-resistance butt-welded elbow comprises the following specific preparation steps:
the method comprises the following steps: weighing tin metal powder, zinc metal powder, aluminum metal powder, copper metal powder, silver metal powder, indium metal powder, bismuth metal powder, nano cerium oxide and titanium metal powder in the elbow body and the laser cladding alloy layer raw materials according to the weight parts;
step two: adding the tin metal powder, the zinc metal powder, the aluminum metal powder, the copper metal powder, the silver metal powder, the indium metal powder, the bismuth metal powder, the nano cerium oxide and the titanium metal powder in the step one into a planetary ball mill, and stirring at a constant temperature of 25-35 ℃ for 30-40 minutes to obtain a mixed material;
step three: sieving the blend prepared in the second step through a 800-1000 mesh sieve under the action of ultrasonic waves to obtain a cladding base material;
step four: vacuum spraying the cladding base material prepared in the third step to the welding position of the end part of the elbow body in the first step, and drying to obtain a semi-finished high-pressure-resistant butt welding elbow;
step five: and D, performing laser scanning treatment on the cladding base material on the semi-finished product high-pressure-resistant butt-welding elbow prepared in the fourth step, and converting the cladding base material into a laser cladding alloy layer to obtain the high-pressure-resistant butt-welding elbow.
Further, in step two, a planetary ball mill: revolution speed: 280-360 r/min, 560-720 r/min of rotation speed and 27-31 KW of power; in the third step, the operation in the second step is carried out again on the mixed material which is not subjected to screening treatment, the ultrasonic frequency is 1.3-1.5 MHz, and the ultrasonic power is 400-600W; in the fourth step, air-cooling drying treatment at 15-25 ℃ is adopted; in the fifth step, the laser power is 3000-3800W, and the scanning speed is 240-320 mm/min.
Further, in step two, a planetary ball mill: revolution speed: 280r/min, 560r/min of autorotation speed and 27KW of power; in the third step, the operation in the second step is carried out again on the mixture which is not subjected to screening treatment, the ultrasonic frequency is 1.3MHz, and the ultrasonic power is 400W; in the fourth step, air cooling drying treatment at 15 ℃ is adopted; in step five, the laser power is 3000W, and the scanning speed is 240 mm/min.
Further, in step two, a planetary ball mill: revolution speed: 360r/min, the rotation speed of 720r/min and the power of 31 KW; in the third step, the operation in the second step is carried out again on the mixture which is not subjected to screening treatment, the ultrasonic frequency is 1.5MHz, and the ultrasonic power is 600W; in the fourth step, air cooling drying treatment at 25 ℃ is adopted; in step five, the laser power is 3800W, and the scanning speed is 320 mm/min.
Further, in step two, a planetary ball mill: revolution speed: 320r/min, the autorotation speed of 640r/min and the power of 29 KW; in the third step, the operation in the second step is carried out again on the mixture which is not subjected to screening treatment, the ultrasonic frequency is 1.4MHz, and the ultrasonic power is 500W; in the fourth step, air cooling drying treatment at 20 ℃ is adopted; in the fifth step, the laser power is 3400W, and the scanning speed is 280 mm/min.
The invention has the technical effects and advantages that:
1. the high-compression-resistance butt-welding elbow prepared by the raw material formula can effectively enhance the compression strength of the high-compression-resistance butt-welding elbow and a stainless steel pipeline, and can ensure the safety and stability of the butt-welding elbow and the stainless steel pipeline under high-strength pressure vibration treatment; the titanium metal powder and the aluminum metal powder are matched with each other to form a titanium/aluminum composite layer, so that the compressive strength and the stability of a welding line can be effectively enhanced; the nano cerium oxide and the copper metal powder are doped into the tin metal powder and the silver metal powder, so that the compression resistance and the fatigue resistance of a welding seam can be effectively enhanced; the zinc metal powder can effectively blend other raw materials of the laser cladding alloy layer, the boiling point of zinc is low, the steam pressure is high, zinc is easy to volatilize in the welding process to take away a large amount of heat, the heat conductivity of zinc is high, the heat at a welding point is easy to lose in the welding process, and the heat of a welding seam is quickly dissipated;
2. in the process of preparing the high-pressure-resistant butt-welded elbow, in the second step, the laser cladding alloy layer raw material is subjected to planetary ball milling treatment at the constant temperature of 30 ℃, so that the blending and crushing treatment effect can be effectively enhanced, and meanwhile, the constant temperature of 30 ℃ can effectively reduce the heat generated by the metal material in the blending process, so that the uniform mixing degree of the metal material is ensured; in the third step, ultrasonic screening treatment can effectively ensure the homogenization of the whole grain size of the cladding base material, and is convenient for the next vacuum spraying treatment effect; in the fourth step, the cladding base material is sprayed on the elbow body in vacuum; in the fifth step, laser scanning treatment is carried out on the cladding base material, the cladding base material is converted into a laser cladding alloy layer, the contact combination effect of the laser cladding alloy layer and the elbow body can be effectively enhanced, and the high-pressure-resistant butt welding elbow is obtained.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a high pressure resistance butt welding elbow, which comprises: 956.0g of elbow body and 44.0g of laser cladding alloy layer; the laser cladding alloy layer comprises: 21.384g of tin metal powder, 1.936g of zinc metal powder, 0.528g of aluminum metal powder, 0.748g of copper metal powder, 0.352g of silver metal powder, 8.624g of indium metal powder, 4.136g of bismuth metal powder, 0.176g of nano cerium oxide and 6.116g of titanium metal powder;
a processing technology of a high-pressure-resistance butt-welded elbow comprises the following specific preparation steps:
the method comprises the following steps: weighing tin metal powder, zinc metal powder, aluminum metal powder, copper metal powder, silver metal powder, indium metal powder, bismuth metal powder, nano cerium oxide and titanium metal powder in the elbow body and the laser cladding alloy layer raw materials according to the weight parts;
step two: adding the tin metal powder, the zinc metal powder, the aluminum metal powder, the copper metal powder, the silver metal powder, the indium metal powder, the bismuth metal powder, the nano cerium oxide and the titanium metal powder in the step one into a planetary ball mill, and stirring at a constant temperature of 25 ℃ for 30 minutes to obtain a mixed material;
step three: sieving the blend prepared in the second step through a 800-mesh sieve under the action of ultrasonic waves to obtain a cladding base material;
step four: vacuum spraying the cladding base material prepared in the third step to the welding position of the end part of the elbow body in the first step, and drying to obtain a semi-finished high-pressure-resistant butt welding elbow;
step five: and D, performing laser scanning treatment on the cladding base material on the semi-finished product high-pressure-resistant butt-welding elbow prepared in the fourth step, and converting the cladding base material into a laser cladding alloy layer to obtain the high-pressure-resistant butt-welding elbow.
In step two, a planetary ball mill: revolution speed: 280r/min, 560r/min of autorotation speed and 27KW of power; in the third step, the operation in the second step is carried out again on the mixture which is not subjected to screening treatment, the ultrasonic frequency is 1.3MHz, and the ultrasonic power is 400W; in the fourth step, air cooling drying treatment at 15 ℃ is adopted; in step five, the laser power is 3000W, and the scanning speed is 240 mm/min.
Example 2:
different from the embodiment 1, the method comprises the following steps: 966.0g of elbow body and 34.0g of laser cladding alloy layer; the laser cladding alloy layer comprises: 16.932g of tin metal powder, 1.836g of zinc metal powder, 0.612g of aluminum metal powder, 0.85g of copper metal powder, 0.476g of silver metal powder, 7.004g of indium metal powder, 3.536g of bismuth metal powder, 0.204g of nano cerium oxide and 2.55g of titanium metal powder.
Example 3:
unlike the examples 1 to 2, the present invention comprises: 961.0g of elbow body and 39.0g of laser cladding alloy layer; the laser cladding alloy layer comprises: 19.188g of tin metal powder, 1.911g of zinc metal powder, 0.585g of aluminum metal powder, 0.819g of copper metal powder, 0.429g of silver metal powder, 7.839g of indium metal powder, 3.861g of bismuth metal powder, 0.195g of nano cerium oxide and 4.173g of titanium metal powder.
The high-pressure-resistant butt-welded elbow prepared in the above examples 1 to 3, the high-pressure-resistant butt-welded elbow of the first control group, the high-pressure-resistant butt-welded elbow of the second control group, the high-pressure-resistant butt-welded elbow of the third control group, the high-pressure-resistant butt-welded elbow of the fourth control group and the high-pressure-resistant butt-welded elbow of the fifth control group were respectively taken, compared with the embodiment, the high pressure resistance butt welding elbow of the comparison group I does not contain titanium metal powder, compared with the embodiment, the high pressure resistance butt welding elbow of the comparison group II does not contain indium metal powder, compared with the embodiment, the high pressure resistance butt welding elbow of the third comparison group has no bismuth metal powder, compared with the embodiment, the high pressure resistance butt welding elbow of the fourth comparison group has no nano cerium oxide, compared with the embodiment, the high-pressure-resistant butt welding elbow of the comparison group V does not contain aluminum metal powder, the high-pressure-resistant butt welding elbows of the three embodiments and the five comparison groups are respectively subjected to butt welding processing with the stainless steel pipeline, and the welded stainless steel pipeline and the high-pressure-resistant butt welding elbow are tested; the test results are shown in table one:
table one:
as can be seen from Table I, when the high-pressure-resistant butt-welded elbow comprises the following raw materials in proportion: 961.0g of elbow body and 39.0g of laser cladding alloy layer; the laser cladding alloy layer comprises: 19.188g of tin metal powder, 1.911g of zinc metal powder, 0.585g of aluminum metal powder, 0.819g of copper metal powder, 0.429g of silver metal powder, 7.839g of indium metal powder, 3.861g of bismuth metal powder, 0.195g of nano cerium oxide and 4.173g of titanium metal powder, so that the compressive strength of the high-compressive butt welding elbow and the stainless steel pipeline can be effectively enhanced, and the safety and the stability of the butt welding elbow and the stainless steel pipeline under high-strength pressure vibration treatment can be ensured; therefore, the embodiment 3 is a better implementation mode of the invention, and the laser cladding alloy layer is applied to the welding part of the butt welding elbow, so that the connection safety, high compressive strength and stability of the butt welding elbow and the stainless steel pipeline can be effectively enhanced; the tin metal powder, the silver metal powder and the bismuth metal powder are matched with each other, so that the butt welding processing temperature can be effectively reduced, and energy can be effectively saved; the mutual matching of the bismuth metal powder and the indium metal powder can further reduce the butt welding processing temperature and ensure the normal operation of low-temperature welding processing; the titanium metal powder and the aluminum metal powder are matched with each other to form a titanium/aluminum composite layer, so that the compressive strength and the stability of a welding line can be effectively enhanced; the nano cerium oxide and the copper metal powder are doped into the tin metal powder and the silver metal powder, so that the microstructure of the laser cladding alloy layer is optimized, intermetallic compound grains are refined, and the compression resistance and the fatigue resistance of a welding seam can be effectively enhanced; the zinc metal powder can effectively blend other raw materials of the laser cladding alloy layer, the boiling point of zinc is low, the steam pressure is high, zinc is easy to volatilize in the welding process to take away a large amount of heat, the heat conductivity of zinc is also high, the heat at a welding point in the welding process is easy to lose, and the heat of a welding seam is quickly dissipated.
Example 4
In the above preferred technical solution, the present invention provides a high pressure resistant butt welded elbow, including: 961.0g of elbow body and 39.0g of laser cladding alloy layer; the laser cladding alloy layer comprises: 19.188g of tin metal powder, 1.911g of zinc metal powder, 0.585g of aluminum metal powder, 0.819g of copper metal powder, 0.429g of silver metal powder, 7.839g of indium metal powder, 3.861g of bismuth metal powder, 0.195g of nano cerium oxide and 4.173g of titanium metal powder.
A processing technology of a high-pressure-resistance butt-welded elbow comprises the following specific preparation steps:
the method comprises the following steps: weighing tin metal powder, zinc metal powder, aluminum metal powder, copper metal powder, silver metal powder, indium metal powder, bismuth metal powder, nano cerium oxide and titanium metal powder in the elbow body and the laser cladding alloy layer raw materials according to the weight parts;
step two: adding the tin metal powder, the zinc metal powder, the aluminum metal powder, the copper metal powder, the silver metal powder, the indium metal powder, the bismuth metal powder, the nano cerium oxide and the titanium metal powder in the step one into a planetary ball mill, and stirring at a constant temperature of 30 ℃ for 35 minutes to obtain a mixed material;
step three: sieving the blend prepared in the step two through a 9000-mesh sieve under the action of ultrasonic waves to obtain a cladding base material;
step four: vacuum spraying the cladding base material prepared in the third step to the welding position of the end part of the elbow body in the first step, and drying to obtain a semi-finished high-pressure-resistant butt welding elbow;
step five: and D, performing laser scanning treatment on the cladding base material on the semi-finished product high-pressure-resistant butt-welding elbow prepared in the fourth step, and converting the cladding base material into a laser cladding alloy layer to obtain the high-pressure-resistant butt-welding elbow.
In step two, a planetary ball mill: revolution speed: 280r/min, 560r/min of autorotation speed and 27KW of power; in the third step, the operation in the second step is carried out again on the mixture which is not subjected to screening treatment, the ultrasonic frequency is 1.3MHz, and the ultrasonic power is 400W; in the fourth step, air cooling drying treatment at 15 ℃ is adopted; in step five, the laser power is 3000W, and the scanning speed is 240 mm/min.
Example 5
In contrast to example 4, in step two, a planetary ball mill: revolution speed: 360r/min, the rotation speed of 720r/min and the power of 31 KW; in the third step, the operation in the second step is carried out again on the mixture which is not subjected to screening treatment, the ultrasonic frequency is 1.5MHz, and the ultrasonic power is 600W; in the fourth step, air cooling drying treatment at 25 ℃ is adopted; in step five, the laser power is 3800W, and the scanning speed is 320 mm/min.
Example 6
In contrast to all of examples 4-5, in step two, a planetary ball mill: revolution speed: 320r/min, the autorotation speed of 640r/min and the power of 29 KW; in the third step, the operation in the second step is carried out again on the mixture which is not subjected to screening treatment, the ultrasonic frequency is 1.4MHz, and the ultrasonic power is 500W; in the fourth step, air cooling drying treatment at 20 ℃ is adopted; in the fifth step, the laser power is 3400W, and the scanning speed is 280 mm/min.
The high-pressure-resistant butt-welded elbows prepared in the above examples 4-6, the high-pressure-resistant butt-welded elbow of the sixth control group, the high-pressure-resistant butt-welded elbow of the seventh control group, the high-pressure-resistant butt-welded elbow of the eighth control group and the high-pressure-resistant butt-welded elbow of the ninth control group are respectively taken, compared with the embodiment, the high pressure resistant butt welding elbow of the comparison group six has no operation in the step two, the high pressure resistant butt welding elbow of the comparison group seven has no operation in the step three, compared with the embodiment, the high pressure resistance butt welding elbow of the comparison group eight has no operation in the fourth step, compared with the embodiment, the high pressure resistance butt welding elbow of the comparison group nine has no operation in the fifth step, the high pressure resistance butt welding elbows of the three embodiments and the four comparison groups are respectively butt-welded with the stainless steel pipeline, and (3) testing the welded stainless steel pipeline and the high-pressure-resistant butt-welding elbow, wherein the test results are shown in the table II:
table two:
as can be seen from table two, in the process of preparing the high-compression-resistance butt-welding elbow, when the processing technology in the sixth embodiment is the preferred scheme of the present invention, in the second step, the planetary ball milling treatment is performed on the tin metal powder, the zinc metal powder, the aluminum metal powder, the copper metal powder, the silver metal powder, the indium metal powder, the bismuth metal powder, the nano cerium oxide, and the titanium metal powder at a constant temperature of 30 ℃, so that the blending and crushing treatment effect of the metal materials can be effectively enhanced, and meanwhile, the heat generated by the metal materials in the blending process can be effectively reduced at a constant temperature of 30 ℃, so that the indium metal powder and the bismuth metal powder are prevented from being converted into a molten state under the heat state, and the uniform degree of mixing of the metal materials is ensured; in the third step, the mixed material is sieved under 1.4MHz ultrasonic oscillation treatment, so that the homogenization of the whole grain size of the cladding base material can be effectively ensured, and the vacuum spraying treatment effect of the next step is facilitated; in the fourth step, the cladding base material is sprayed on the elbow body in vacuum; in the fifth step, laser scanning treatment is carried out on the cladding base material, the cladding base material is converted into a laser cladding alloy layer, the contact combination effect of the laser cladding alloy layer and the elbow body can be effectively enhanced, and the high-pressure-resistant butt welding elbow is obtained.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a high resistance to compression butt welding elbow which characterized in that: comprises the following components in percentage by weight: 95.60-96.60% of the elbow body, and the balance of the elbow body is a laser cladding alloy layer, wherein the laser cladding alloy layer is uniformly distributed at the end welding part of the elbow body.
2. The high pressure resistant butt welded elbow according to claim 1, characterized in that: the laser cladding alloy layer comprises the following components in percentage by weight: 48.60-49.80% of tin metal powder, 4.40-5.40% of zinc metal powder, 1.20-1.80% of aluminum metal powder, 1.70-2.50% of copper metal powder, 0.80-1.40% of silver metal powder, 19.60-20.60% of indium metal powder, 9.40-10.40% of bismuth metal powder, 0.40-0.60% of nano cerium oxide, and the balance of titanium metal powder.
3. The high pressure resistant butt welded elbow according to claim 2, characterized in that: comprises the following components in percentage by weight: 95.60% of elbow body and 4.40% of laser cladding alloy layer; the laser cladding alloy layer comprises the following components in percentage by weight: 48.60% of tin metal powder, 4.40% of zinc metal powder, 1.20% of aluminum metal powder, 1.70% of copper metal powder, 0.80% of silver metal powder, 19.60% of indium metal powder, 9.40% of bismuth metal powder, 0.40% of nano cerium oxide and 13.90% of titanium metal powder.
4. The high pressure resistant butt welded elbow according to claim 2, characterized in that: comprises the following components in percentage by weight: 96.60% of elbow body and 3.40% of laser cladding alloy layer; the laser cladding alloy layer comprises the following components in percentage by weight: 49.80 percent of tin metal powder, 5.40 percent of zinc metal powder, 1.80 percent of aluminum metal powder, 2.50 percent of copper metal powder, 1.40 percent of silver metal powder, 20.60 percent of indium metal powder, 10.40 percent of bismuth metal powder, 0.60 percent of nano cerium oxide and 7.50 percent of titanium metal powder.
5. The high pressure resistant butt welded elbow according to claim 2, characterized in that: comprises the following components in percentage by weight: 96.10% of elbow body and 3.90% of laser cladding alloy layer; the laser cladding alloy layer comprises the following components in percentage by weight: 49.20% of tin metal powder, 4.90% of zinc metal powder, 1.50% of aluminum metal powder, 2.10% of copper metal powder, 1.10% of silver metal powder, 20.10% of indium metal powder, 9.90% of bismuth metal powder, 0.50% of nano cerium oxide and 10.70% of titanium metal powder.
6. A processing technology of a high pressure resistant butt welding elbow is characterized in that: the preparation method comprises the following specific steps:
the method comprises the following steps: weighing tin metal powder, zinc metal powder, aluminum metal powder, copper metal powder, silver metal powder, indium metal powder, bismuth metal powder, nano cerium oxide and titanium metal powder in the elbow body and the laser cladding alloy layer raw materials according to the weight parts;
step two: adding the tin metal powder, the zinc metal powder, the aluminum metal powder, the copper metal powder, the silver metal powder, the indium metal powder, the bismuth metal powder, the nano cerium oxide and the titanium metal powder in the step one into a planetary ball mill, and stirring at a constant temperature of 25-35 ℃ for 30-40 minutes to obtain a mixed material;
step three: sieving the blend prepared in the second step through a 800-1000 mesh sieve under the action of ultrasonic waves to obtain a cladding base material;
step four: vacuum spraying the cladding base material prepared in the third step to the welding position of the end part of the elbow body in the first step, and drying to obtain a semi-finished high-pressure-resistant butt welding elbow;
step five: and D, performing laser scanning treatment on the cladding base material on the semi-finished product high-pressure-resistant butt-welding elbow prepared in the fourth step, and converting the cladding base material into a laser cladding alloy layer to obtain the high-pressure-resistant butt-welding elbow.
7. The processing technology of the high pressure resistant butt welded elbow according to claim 6, characterized in that: in step two, a planetary ball mill: revolution speed: 280-360 r/min, 560-720 r/min of rotation speed and 27-31 KW of power; in the third step, the operation in the second step is carried out again on the mixed material which is not subjected to screening treatment, the ultrasonic frequency is 1.3-1.5 MHz, and the ultrasonic power is 400-600W; in the fourth step, air-cooling drying treatment at 15-25 ℃ is adopted; in the fifth step, the laser power is 3000-3800W, and the scanning speed is 240-320 mm/min.
8. The processing technology of the high pressure resistant butt welded elbow according to claim 7, characterized in that: in step two, a planetary ball mill: revolution speed: 280r/min, 560r/min of autorotation speed and 27KW of power; in the third step, the operation in the second step is carried out again on the mixture which is not subjected to screening treatment, the ultrasonic frequency is 1.3MHz, and the ultrasonic power is 400W; in the fourth step, air cooling drying treatment at 15 ℃ is adopted; in step five, the laser power is 3000W, and the scanning speed is 240 mm/min.
9. The processing technology of the high pressure resistant butt welded elbow according to claim 7, characterized in that: in step two, a planetary ball mill: revolution speed: 360r/min, the rotation speed of 720r/min and the power of 31 KW; in the third step, the operation in the second step is carried out again on the mixture which is not subjected to screening treatment, the ultrasonic frequency is 1.5MHz, and the ultrasonic power is 600W; in the fourth step, air cooling drying treatment at 25 ℃ is adopted; in step five, the laser power is 3800W, and the scanning speed is 320 mm/min.
10. The processing technology of the high pressure resistant butt welded elbow according to claim 7, characterized in that: in step two, a planetary ball mill: revolution speed: 320r/min, the autorotation speed of 640r/min and the power of 29 KW; in the third step, the operation in the second step is carried out again on the mixture which is not subjected to screening treatment, the ultrasonic frequency is 1.4MHz, and the ultrasonic power is 500W; in the fourth step, air cooling drying treatment at 20 ℃ is adopted; in the fifth step, the laser power is 3400W, and the scanning speed is 280 mm/min.
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