CN116218363A - Protective slurry and preparation method thereof, protective sleeve containing protective slurry and preparation method thereof and application of protective sleeve in laser welding of stainless steel - Google Patents
Protective slurry and preparation method thereof, protective sleeve containing protective slurry and preparation method thereof and application of protective sleeve in laser welding of stainless steel Download PDFInfo
- Publication number
- CN116218363A CN116218363A CN202310334129.5A CN202310334129A CN116218363A CN 116218363 A CN116218363 A CN 116218363A CN 202310334129 A CN202310334129 A CN 202310334129A CN 116218363 A CN116218363 A CN 116218363A
- Authority
- CN
- China
- Prior art keywords
- protective
- slurry
- protective sleeve
- parts
- stainless steel
- 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.)
- Granted
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 161
- 239000002002 slurry Substances 0.000 title claims abstract description 92
- 238000003466 welding Methods 0.000 title claims abstract description 92
- 239000010935 stainless steel Substances 0.000 title claims abstract description 55
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 27
- 238000007613 slurry method Methods 0.000 title description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 36
- 239000010703 silicon Substances 0.000 claims abstract description 36
- 239000000945 filler Substances 0.000 claims abstract description 33
- 239000003054 catalyst Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 18
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 15
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 14
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims abstract description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 13
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000007822 coupling agent Substances 0.000 claims abstract description 13
- 239000001257 hydrogen Substances 0.000 claims abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 13
- 229910000077 silane Inorganic materials 0.000 claims abstract description 13
- 229920002545 silicone oil Polymers 0.000 claims abstract description 13
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims description 31
- 238000000227 grinding Methods 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 10
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 150000002923 oximes Chemical class 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 230000006866 deterioration Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 230000001590 oxidative effect Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 238000004220 aggregation Methods 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000004939 coking Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Images
Classifications
-
- 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
- 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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model belongs to the technical field of laser welding, and particularly relates to protective slurry and a preparation method thereof, a protective sleeve containing the protective slurry and a preparation method thereof, and application of the protective sleeve in laser welding stainless steel. The utility model adopts a method of winding a base material inside and coating protective slurry outside to prepare the protective sleeve, and is applied to stainless steel laser welding. The protective slurry comprises 107 silicon rubber, methyl tributyl ketoxime silane, hydrogen-containing silicone oil, dicumyl peroxide, KH550 coupling agent, silicon micropowder-aluminum hydroxide mixed filler, catalyst, MQ silicon resin and silicon nitride. The internally wound base material is tightly combined with the stainless steel laser welding piece, is not limited by the shape of the workpiece, and is suitable for various workpieces with special-shaped cross sections; the protective slurry is reinforced and tightly combined, the high-temperature filler can be agglomerated when being subjected to high-energy welding, so that the surface of a welding workpiece is prevented from being oxidized and deformed in a high-temperature environment, the preparation method of the protective slurry is simple, the cost is low, and the prepared protective sleeve can be repeatedly used.
Description
Technical Field
The utility model belongs to the technical field of laser welding, and particularly relates to protective slurry and a preparation method thereof, a protective sleeve containing the protective slurry and a preparation method thereof, and application of the protective sleeve in laser welding stainless steel.
Background
The laser welding is a novel welding mode, and an efficient and precise welding method using a laser beam with high energy density as a heat source. The laser welding speed is high, the depth is large, the deformation is small, the welding can be performed at room temperature or under special conditions, little heat is generated in the welding process, and the thermal deformation of a welding line area can be avoided; the welding surface is neat, the welding seam quality is high, the whole is attractive, no air hole exists, no polishing and grinding are needed for welding without excessively high requirements, and therefore laser welding becomes one of important aspects in the technical field of welding processing.
Stainless steel materials are corrosion-resistant, high-temperature-resistant and good in processing performance, so that the stainless steel materials are widely applied to the industries of industry, furniture decoration and food medical industry, under the general condition, stainless steel laser welding is easier to obtain high-quality joints than conventional welding, sensitization is not an important problem because a heat affected zone of high welding speed is small, compared with carbon steel, deep-melting narrow welding seams are easier to obtain due to low heat conductivity coefficient of the stainless steel, and when a laser welding process is mature, the price is greatly reduced, so that the stainless steel products are welded by the laser welding process on a large scale on the market at present. However, when the laser welder welds stainless steel products with special shapes at present, the defect of insufficient purging of shielding gas is easy to occur, so that the surface of the stainless steel products with groove shapes cannot be protected, the surface of the stainless steel products is seriously oxidized, the mechanical structure change of the oxidized surface of the stainless steel can be changed while the appearance is influenced, and finally the problems of poor surface decoration of the stainless steel products, incapability of guaranteeing the internal quality and the like are caused.
At present, aiming at the problems that the appearance of the surface of a welded product is poor, the mechanical property of the product is influenced by oxidation reaction and the like due to insufficient blowing of shielding gas in the common welding process, a welding oxidation prevention protective sleeve is generally adopted, and as disclosed in the patent of the utility model with the publication number of CN110883406A, a non-ferrous metal pipe fitting welding protective sleeve is generally adopted, one side of a protective sleeve body of the non-ferrous metal pipe fitting welding protective sleeve is provided with a sleeve hole I, the other side of the protective sleeve body is provided with a sleeve hole II, the protective sleeve body is provided with an air vent, a welding gun hole, a welding wire filling hole, a viewing mirror and an air outlet hole, the air vent is communicated with an argon tank, and the air vent is positioned on one side of the protective sleeve body, and the air outlet hole is positioned on the other side of the protective sleeve body. Above-mentioned protective sheath protects pipe fitting welded structure and heat affected zone in the welding for pipe fitting welded joint and heat affected zone are isolated with the air, let pipe fitting welded joint and heat affected zone cool off to normal atmospheric temperature at the high temperature, have avoided the entering of oxygen, avoid taking place oxidation reaction, avoid the colour difference problem to produce, improve pipe fitting quality. Another example is that the novel use patent with publication number of CN205278604U discloses a metal hose for preventing welding oxidation, which comprises a corrugated pipe, connecting pipes, sleeves and an outer woven net, wherein two end faces of the corrugated pipe are respectively provided with an annular connecting ring, the outer side wall of each connecting ring is welded and fixed with the inner side wall of each connecting pipe, the two connecting pipes are respectively sleeved into one sleeve, the outer woven net is coated on the outer side face of the corrugated pipe, two ends of the outer woven net are respectively embedded into gaps between the outer side walls of the connecting pipes at two ends and the inner side wall of the sleeve, and the outer side walls of the connecting pipes are welded and fixed with the inner side wall of the sleeve; the metal hose has the advantages of simple structure, convenient manufacture, stable performance, wide application range and long service life.
However, most of the protection sleeves which are arranged for common welding in the current market mainly comprise metal or organic polymers, and the metal protection sleeves are required to be tightly combined with the welded parts to achieve the purpose of protection, so that the same protection sleeve can only be applied to specific welded parts, and the preparation process is complex and the cost is high; the highest bearing temperature of the protective sleeve made of the organic polymer is generally 200-300 ℃, the protective sleeve is insufficient to resist the high temperature generated by laser welding, the foaming and coking phenomena are easy to occur in the use process, the modified polymer is stuck to a stainless steel workpiece, and the cleaning is difficult, so that organic matters remain on the surface of the workpiece. Meanwhile, after the traditional protective sleeve is damaged at high energy temperature, the structure is changed greatly, and the surface of a workpiece is possibly exposed, so that a welding part is oxidized, the heat dissipation of the traditional protective sleeve is poor, and the stainless steel around a welding line is easy to deteriorate.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a protective slurry and a preparation method thereof, a protective sleeve containing the protective slurry and a preparation method thereof and application of the protective sleeve in laser welding of stainless steel, and aims to solve the technical problems that the existing protective sleeve is poor in suitability, high in manufacturing cost, difficult to resist high temperature generated by laser welding, easy to generate a bubble coking phenomenon in use, not only affects the appearance of a stainless steel welding piece, but also is easy to cause the reduction of the mechanical property of the stainless steel welding piece.
The utility model provides a first technical scheme for protecting slurry, which comprises the following specific technical scheme:
the protective slurry comprises 107 silicon rubber, methyl tributyl ketoxime silane, hydrogen-containing silicone oil, dicumyl peroxide, KH550 coupling agent, silicon micropowder-aluminum hydroxide mixed filler, catalyst, MQ silicon resin and silicon nitride.
Preferably, the protective slurry comprises the following components in parts by mass: 15-30 parts of 107 silicon rubber, 5-15 parts of methyl tributyl ketoxime silane, 2-5 parts of hydrogen-containing silicone oil, 0.5-1 part of dicumyl peroxide, 0.5-10 parts of KH550 coupling agent, 10-20 parts of silicon micropowder-aluminum hydroxide mixed filler, 0.5-3 parts of catalyst, 5-10 parts of MQ silicon resin and 10-20 parts of silicon nitride.
Preferably, the mass ratio of the silicon micro powder to the aluminum hydroxide in the silicon micro powder-aluminum hydroxide mixed filler is 5:1-1:5, the fineness of the silicon micro powder is 900-1300 meshes, and the fineness of the aluminum hydroxide is 600-900 meshes.
Preferably, the catalyst is one of a platinum catalyst or a dibutyltin dilaurate catalyst.
The utility model provides a preparation method of protective slurry according to a second technical scheme, which is based on the protective slurry according to the first technical scheme, and comprises the following specific technical scheme:
the preparation method of the protective slurry specifically comprises the following steps:
mixing and stirring 107 silicon rubber, dicumyl peroxide, KH550 coupling agent, silicon micropowder-aluminum hydroxide mixed filler, silicon nitride and MQ silicon resin, and grinding for multiple times to obtain uniform slurry;
and S2, when the protective slurry is used, the catalyst and the methyltributylketon oxime silane are added into the hydrogen-containing silicone oil, stirred and mixed uniformly, and then added into the uniform slurry obtained in the step S1, and fully and uniformly stirred to obtain the protective slurry.
Preferably, in the step S1, the multiple grinding is specifically performed by using a three-roller grinder, and when the aggregation state of large particles in the powder filler disappears and no large powder filler particles exist, the powder filler is integrally ground for 3-5 times to obtain uniform slurry;
the utility model provides a preparation method of a protective sleeve according to a third technical scheme, which is based on the protective slurry according to the first technical scheme, and comprises the following specific technical scheme:
the preparation method of the protective sleeve comprises the steps of soaking and completely wrapping the base material by using the protective slurry, and curing to form the protective sleeve.
Preferably, the preparation method of the protective sleeve specifically comprises the following steps:
1) Wrapping the part to be protected of the piece to be welded with a base material, wherein the wrapping thickness is 1-3mm;
2) And (3) completely infiltrating the base material with the protective slurry, wherein the brushing thickness of the protective slurry on the surface of the base material is more than 1mm, and then curing to obtain the protective sleeve.
Preferably, the base material is toughened fiber such as alkali-free glass fiber or carbon fiber.
The utility model provides a fourth technical scheme which is a protective sleeve, namely the protective sleeve prepared by the third technical scheme.
The utility model provides an application of a fifth technical scheme of a protective sleeve in laser welding of stainless steel, which is based on the fourth technical scheme, and comprises the following specific technical scheme:
the application of the protective sleeve in laser welding stainless steel, in particular to wrapping the protective sleeve on a stainless steel piece before laser welding.
Preferably, the protective sleeve can be repeatedly used when being applied to laser welding stainless steel parts.
Preferably, the method for repeatedly using the protective sleeve in the laser welding of stainless steel comprises the following steps: and (3) cutting the protective sleeve, peeling off the protective sleeve integrally, sleeving a new workpiece again, filling the gap between the protective sleeve surface and the new workpiece with protective slurry, smearing the protective slurry to a thickness of more than 1mm, and curing the protective slurry for reuse.
Preferably, the protective sleeve is applied to laser welding of stainless steel, and after the protective sleeve is peeled off, the cleaning method of the workpiece specifically comprises the following steps: firstly, immersing a welding workpiece in acetone, then cleaning by using ultrasonic waves, and finally wiping by using dust-free cloth containing acetone.
The base material has super-strong toughness and supporting function, and when the surface protective slurry begins to soften and carbonize at high temperature, the inner base material can play a good supporting role, so that the whole protective sleeve is prevented from falling off after the external protective slurry is damaged, and the surface of the stainless steel welding piece is effectively prevented from undergoing oxidation reaction.
The protective slurry can generate gas in the curing process, weak air holes are formed on the surface of the protective sleeve, the air holes can rapidly dissipate heat in the welding process, the workpiece is prevented from being oxidized and deformed in a overheat environment, and the protective slurry has a stable effect on silicon nitride and silicon micropowder-aluminum hydroxide mixed filler at high temperature, wherein aluminum hydroxide can react at high temperature to form a high-temperature protective layer of aluminum oxide, so that the protective sleeve can bear higher temperature, the stainless steel welding part is effectively protected from high-temperature oxidative discoloration in the laser welding process, and the quality and good appearance of the stainless steel welding part after laser welding are ensured.
The protective sleeve for stainless steel laser welding is prepared by adopting a method of internally wrapping a base material and externally coating high-performance resin protective slurry, can bear 300-400 ℃, can not generate coking phenomenon after being damaged at a higher temperature, and can be easily taken down from a workpiece. The internally wound base material can be tightly combined with the stainless steel welding piece, is not limited by the cross section shape of the workpiece, and is suitable for various workpieces with special-shaped cross sections; the high-performance resin protective slurry is coated outside the base material, so that the tight combination of the protective sleeve and the stainless steel welding piece can be enhanced, the protective slurry is rich in high-temperature-resistant filler, the powder filler can be formed into blocks through the effect of high-energy welding temperature, the high-temperature gas in the surrounding environment is prevented from entering the surface of the stainless steel welding piece to cause oxidization, and the selected silicon nitride, silicon micropowder-aluminum hydroxide mixed filler has excellent heat conducting property, can effectively conduct and dissipate the high temperature around the welding seam of the workpiece, and ensures that the stainless steel body around the welding seam cannot generate high-temperature deterioration; the preparation method of the protective slurry is simple and reliable, has low cost, and can be used for stainless steel welding parts with various special-shaped cross sections.
Drawings
FIG. 1 is a flow chart of a method for preparing a protective sleeve provided by the utility model;
FIG. 2 is a schematic illustration of a laser welding process using a protective sheath in accordance with the present utility model;
FIG. 3 is a surface effect diagram of a laser welded workpiece without a protective sheath;
fig. 4 is a surface effect view of a laser welded workpiece after protection using a protective sheath.
In the figure: 1-laser emission head, 2-welding work piece, 3-protective sheath, 4-shielding gas, 5-welding point.
Detailed Description
The present utility model will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
Example 1
The protection slurry and the preparation method thereof, the protection sleeve containing the protection slurry and the preparation method thereof and the application in laser welding stainless steel are provided in the embodiment, and the specific technical scheme is as follows:
the protective slurry comprises the following components in parts by mass: 107 silicon rubber 15 parts, methyl tributyl ketoxime silane 15 parts, hydrogen-containing silicone oil 2 parts, dicumyl peroxide 0.5 parts, KH550 coupling agent 10 parts, silica micropowder-aluminum hydroxide mixed filler 10 parts, catalyst 0.5 parts, MQ silicon resin 10 parts and silicon nitride 10 parts.
The mass ratio of the silicon micro powder to the aluminum hydroxide in the silicon micro powder-aluminum hydroxide mixed filler is 5:1, the fineness of the silicon micro powder is 1300 meshes, and the fineness of the aluminum hydroxide is 600 meshes.
Platinum catalyst was used as the catalyst.
The preparation method of the protective slurry comprises the following steps:
s1, mixing and stirring 107 silicon rubber, dicumyl peroxide, KH550 coupling agent, silicon micropowder-aluminum hydroxide mixed filler, silicon nitride and MQ silicon resin, and grinding for multiple times to obtain uniform slurry;
and S2, when the protective slurry is used, the catalyst and the methyltributylketon oxime silane are added into the hydrogen-containing silicone oil, stirred and mixed uniformly, and then added into the uniform slurry obtained in the step S1, and fully and uniformly stirred to obtain the protective slurry.
In the step S1, multiple times of grinding are carried out, specifically, a three-roller grinder is used for grinding, when the aggregation state of large particles in the powder filler disappears and the large powder filler particles are not contained, the whole grinding is carried out for 5 times to obtain uniform slurry;
the stainless steel laser welding protective sleeve is prepared by using the protective slurry, and the specific steps are as follows:
1) Wrapping the part to be protected of the piece to be welded by using alkali-free glass fiber, wherein the wrapping thickness is 1mm;
2) And (3) completely infiltrating the alkali-free glass fiber with the protective slurry, brushing the protective slurry on the surface of the alkali-free glass fiber to a thickness of more than 1mm, and curing to obtain the protective sleeve.
The protective slurry prepared by the embodiment can bear the high temperature of 300 ℃, the protective sleeve prepared by the embodiment is applied to laser welding stainless steel, the protective sleeve can be tightly combined with a stainless steel welding piece, the surface of the protective sleeve is blackened after laser welding is finished, powder is not in a caking shape, the protective sleeve can be easily taken down, and the surface of a workpiece is free from oxidative deterioration.
Example 2
The protection slurry and the preparation method thereof, the protection sleeve containing the protection slurry and the preparation method thereof and the application in laser welding stainless steel are provided in the embodiment, and the specific technical scheme is as follows:
the protective slurry comprises the following components in parts by mass: the high-performance high-strength silicone rubber comprises, by weight, 20 parts of 107 silicone rubber, 5 parts of methyltributylketon oxime silane, 5 parts of hydrogen-containing silicone oil, 1 part of dicumyl peroxide, 5 parts of KH550 coupling agent, 15 parts of silica micropowder-aluminum hydroxide mixed filler, 3 parts of catalyst, 5 parts of MQ silicone resin and 15 parts of silicon nitride.
The mass ratio of the silicon micro powder to the aluminum hydroxide in the silicon micro powder-aluminum hydroxide mixed filler is 1:5, the fineness of the silicon micro powder is 1000 meshes, and the fineness of the aluminum hydroxide is 900 meshes.
The catalyst used was dibutyltin dilaurate catalyst.
The preparation method of the protective slurry comprises the following steps:
s1, mixing and stirring 107 silicon rubber, dicumyl peroxide, KH550 coupling agent, silicon micropowder-aluminum hydroxide mixed filler, silicon nitride and MQ silicon resin, and grinding for multiple times to obtain uniform slurry;
and S2, when the protective slurry is used, the catalyst and the methyltributylketon oxime silane are added into the hydrogen-containing silicone oil, stirred and mixed uniformly, and then added into the uniform slurry obtained in the step S1, and fully and uniformly stirred to obtain the protective slurry.
In the step S1, multiple times of grinding are carried out, specifically, a three-roller grinder is used for grinding, when the aggregation state of large particles in the powder filler disappears and the large powder filler particles are not contained, the powder filler is integrally ground for 3 times to obtain uniform slurry;
the stainless steel laser welding protective sleeve is prepared by using the prepared protective slurry, and comprises the following specific steps:
1) Wrapping the part to be protected of the piece to be welded by using alkali-free glass fiber, wherein the wrapping thickness is 3mm;
2) And (3) completely infiltrating the carbon fiber with the protective slurry, brushing the protective slurry on the surface of the alkali-free glass fiber to a thickness of more than 1mm, and curing to obtain the protective sleeve.
The protective slurry prepared by the embodiment can bear the high temperature of 360 ℃, the protective sleeve prepared by the embodiment is applied to laser welding stainless steel, the protective sleeve can be tightly combined with a stainless steel welding piece, the surface of the protective sleeve is blackened after laser welding is finished, powder is in a caking shape, the protective sleeve can be taken down integrally and easily, and the surface of a workpiece is free from oxidative deterioration.
Example 3
The protection slurry and the preparation method thereof, the protection sleeve containing the protection slurry and the preparation method thereof and the application in laser welding stainless steel are provided in the embodiment, and the specific technical scheme is as follows:
the protective slurry comprises the following components in parts by mass: 30 parts of 107 silicon rubber, 10 parts of methyl tributyl ketoxime silane, 3 parts of hydrogen-containing silicone oil, 0.7 part of dicumyl peroxide, 0.5 part of KH550 coupling agent, 20 parts of silica micropowder-aluminum hydroxide mixed filler, 2 parts of catalyst, 8 parts of MQ silicon resin and 20 parts of silicon nitride.
The mass ratio of the silicon micro powder to the aluminum hydroxide in the silicon micro powder-aluminum hydroxide mixed filler is 1:1, the fineness of the silicon micro powder is 900 meshes, and the fineness of the aluminum hydroxide is 900 meshes.
Platinum catalyst was used as the catalyst.
The preparation method of the protective slurry comprises the following steps:
s1, mixing and stirring 107 silicon rubber, dicumyl peroxide, KH550 coupling agent, silicon micropowder-aluminum hydroxide mixed filler, silicon nitride and MQ silicon resin, and grinding for multiple times to obtain uniform slurry;
and S2, when the protective slurry is used, the catalyst and the methyltributylketon oxime silane are added into the hydrogen-containing silicone oil, stirred and mixed uniformly, and then added into the uniform slurry obtained in the step S1, and fully and uniformly stirred to obtain the protective slurry.
In the step S1, multiple times of grinding are carried out, specifically, a three-roller grinder is used for grinding, when the aggregation state of large particles in the powder filler disappears and the large powder filler particles are not contained, the whole grinding is carried out for 5 times to obtain uniform slurry;
the stainless steel laser welding protective sleeve is prepared by using the prepared protective slurry, and comprises the following specific steps:
1) Wrapping the part to be protected of the piece to be welded by using alkali-free glass fiber, wherein the wrapping thickness is 2mm;
2) And (3) completely infiltrating the alkali-free glass fiber with the protective slurry, brushing the protective slurry on the surface of the alkali-free glass fiber to a thickness of more than 1mm, and curing to obtain the protective sleeve.
The prepared protective sleeve is applied to laser welding stainless steel, and specifically comprises the following components: the protective sleeve is wrapped on the stainless steel piece before laser welding.
The protective paste prepared in the embodiment can bear the high temperature of 400 ℃, the protective sleeve prepared in the embodiment is applied to stainless steel laser welding, the surface of the protective sleeve is slightly blackened after the welding is finished, powder is in a caking shape, slight powder falls off, the protective sleeve can be taken down integrally and easily, a small amount of powder residues exist on a welding workpiece, and the powder can be removed completely by using dust-free cloth. Compared with the laser welding stainless steel part without the protective sleeve, as shown in fig. 3, the surface of the laser welding stainless steel part is yellow and dark, and has serious oxidative deterioration, while the surface of the laser welding stainless steel part is bright after being protected by the protective sleeve prepared by the embodiment, and has no oxidative deterioration, as shown in fig. 4.
Example 4
The protective cover used in example 3 was peeled off for reuse, and the method was as follows: and (3) cutting the protective sleeve, peeling off the protective sleeve integrally, sleeving a new workpiece again, filling the gap between the protective sleeve surface and the new workpiece with the protective slurry in the embodiment 3, and coating the protective slurry with the thickness of more than 1mm, wherein the protective slurry can be reused after being solidified.
The protective sleeve prepared by the embodiment is applied to stainless steel laser welding, after the welding is finished, the surface of the protective sleeve is slightly blackened, powder is in a caking shape, slight powder falls off, the protective sleeve can be taken down integrally by using a utility knife, the surface of a workpiece is free from oxidative deterioration, a small amount of powder remains on the welded workpiece, and the powder can be completely removed by using dust-free cloth.
The above preferred embodiments of the present utility model are not limited to the above examples, and the present utility model is not limited to the above examples, but can be modified, added or replaced by those skilled in the art within the spirit and scope of the present utility model.
Claims (10)
1. The protective slurry is characterized by comprising 107 silicon rubber, methyl tributyl ketoxime silane, hydrogen-containing silicone oil, dicumyl peroxide, KH550 coupling agent, silicon micropowder-aluminum hydroxide mixed filler, catalyst, MQ silicon resin and silicon nitride.
2. The protective slurry according to claim 1, comprising the following components in parts by mass: 15-30 parts of 107 silicon rubber, 5-15 parts of methyl tributyl ketoxime silane, 2-5 parts of hydrogen-containing silicone oil, 0.5-1 part of dicumyl peroxide, 0.5-10 parts of KH550 coupling agent, 10-20 parts of silicon micropowder-aluminum hydroxide mixed filler, 0.5-3 parts of catalyst, 5-10 parts of MQ silicon resin and 10-20 parts of silicon nitride.
3. The protective slurry according to claim 1, wherein the mass ratio of the fine silica powder to the aluminum hydroxide in the fine silica powder-aluminum hydroxide mixed filler is 5:1 to 1:5, the fineness of the fine silica powder is 900 to 1300 meshes, and the fineness of the aluminum hydroxide is 600 to 900 meshes.
4. The protective slurry of claim 1, wherein the catalyst is one of a platinum catalyst or a dibutyltin dilaurate catalyst.
5. A method for preparing the protective slurry according to any one of claims 1 to 4, comprising the steps of:
s1, mixing and stirring 107 silicon rubber, dicumyl peroxide, KH550 coupling agent, silicon micropowder-aluminum hydroxide mixed filler, silicon nitride and MQ silicon resin, and grinding for multiple times to obtain uniform slurry;
and S2, when the protective slurry is used, the catalyst and the methyltributylketon oxime silane are added into the hydrogen-containing silicone oil, stirred and mixed uniformly, and then added into the uniform slurry obtained in the step S1, and fully and uniformly stirred to obtain the protective slurry.
6. A method for preparing a protective cover, characterized in that the protective paste according to any one of claims 1 to 4 is impregnated and completely wrapped on a substrate, and then cured to form the protective cover.
7. The method of manufacturing a protective sleeve of claim 6, comprising the steps of:
1) Wrapping the part to be protected of the piece to be welded with a base material, wherein the wrapping thickness is 1-3mm;
2) And (3) completely infiltrating the base material with the protective slurry, wherein the brushing thickness of the protective slurry on the surface of the base material is more than 1mm, and then curing to obtain the protective sleeve.
8. The method of producing a protective cover according to claim 6, wherein the base material is a toughening fiber such as an alkali-free glass fiber or a carbon fiber.
9. Protective cover, characterized in that it is manufactured by the method according to any one of claims 6-8.
10. Use of a protective sleeve in laser welding stainless steel, characterized in that the protective sleeve according to claim 9 is wrapped around a stainless steel part before laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310334129.5A CN116218363B (en) | 2023-03-31 | 2023-03-31 | Protective slurry and preparation method thereof, protective sleeve containing protective slurry and preparation method thereof and application of protective sleeve in laser welding of stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310334129.5A CN116218363B (en) | 2023-03-31 | 2023-03-31 | Protective slurry and preparation method thereof, protective sleeve containing protective slurry and preparation method thereof and application of protective sleeve in laser welding of stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116218363A true CN116218363A (en) | 2023-06-06 |
| CN116218363B CN116218363B (en) | 2024-03-08 |
Family
ID=86571494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310334129.5A Active CN116218363B (en) | 2023-03-31 | 2023-03-31 | Protective slurry and preparation method thereof, protective sleeve containing protective slurry and preparation method thereof and application of protective sleeve in laser welding of stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116218363B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899263A (en) * | 2010-03-26 | 2010-12-01 | 福建瑞森化工有限公司 | Flame-retarding and heat-conducting silicon rubber insulating paint and preparation method thereof |
| CN103618273A (en) * | 2013-10-10 | 2014-03-05 | 江苏江城电气有限公司 | Waterproof bus duct used in high temperature environment |
| CN103951983A (en) * | 2014-04-17 | 2014-07-30 | 中科院广州化学有限公司 | High-thermal-conductivity high-temperature-resistant polysiloxane ceramic composite material, as well as preparation method and applications thereof |
| CN106753200A (en) * | 2016-12-09 | 2017-05-31 | 杭州之江有机硅化工有限公司 | It is a kind of to base material not adhesion type silicone rubber sealant and preparation method thereof |
| CN109181532A (en) * | 2018-09-18 | 2019-01-11 | 湖北兴瑞硅材料有限公司 | A kind of room temperature curing organosilicon coating and preparation method thereof |
| CN111016212A (en) * | 2019-12-31 | 2020-04-17 | 溧阳伊科创绝缘材料技术有限公司 | Manufacturing process of gun nozzle insulating tube of high-temperature gas shielded welding gun |
| CN111100462A (en) * | 2019-12-31 | 2020-05-05 | 溧阳伊科创绝缘材料技术有限公司 | Carbon dioxide gas shielded welding gun nozzle glass fiber insulating part |
| CN115286995A (en) * | 2022-06-29 | 2022-11-04 | 上海航天化工应用研究所 | High-performance heat-proof coating based on interpenetrating network structure and preparation method thereof |
| JP2023011461A (en) * | 2021-07-12 | 2023-01-24 | 有限会社比土工業 | Heat-resistant coating material, heat resistant fabric, and heat resistant product |
-
2023
- 2023-03-31 CN CN202310334129.5A patent/CN116218363B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899263A (en) * | 2010-03-26 | 2010-12-01 | 福建瑞森化工有限公司 | Flame-retarding and heat-conducting silicon rubber insulating paint and preparation method thereof |
| CN103618273A (en) * | 2013-10-10 | 2014-03-05 | 江苏江城电气有限公司 | Waterproof bus duct used in high temperature environment |
| CN103951983A (en) * | 2014-04-17 | 2014-07-30 | 中科院广州化学有限公司 | High-thermal-conductivity high-temperature-resistant polysiloxane ceramic composite material, as well as preparation method and applications thereof |
| CN106753200A (en) * | 2016-12-09 | 2017-05-31 | 杭州之江有机硅化工有限公司 | It is a kind of to base material not adhesion type silicone rubber sealant and preparation method thereof |
| CN109181532A (en) * | 2018-09-18 | 2019-01-11 | 湖北兴瑞硅材料有限公司 | A kind of room temperature curing organosilicon coating and preparation method thereof |
| CN111016212A (en) * | 2019-12-31 | 2020-04-17 | 溧阳伊科创绝缘材料技术有限公司 | Manufacturing process of gun nozzle insulating tube of high-temperature gas shielded welding gun |
| CN111100462A (en) * | 2019-12-31 | 2020-05-05 | 溧阳伊科创绝缘材料技术有限公司 | Carbon dioxide gas shielded welding gun nozzle glass fiber insulating part |
| JP2023011461A (en) * | 2021-07-12 | 2023-01-24 | 有限会社比土工業 | Heat-resistant coating material, heat resistant fabric, and heat resistant product |
| CN115286995A (en) * | 2022-06-29 | 2022-11-04 | 上海航天化工应用研究所 | High-performance heat-proof coating based on interpenetrating network structure and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116218363B (en) | 2024-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2518182B1 (en) | Annular metallic furnace component coated with anorganic material | |
| CN116218363B (en) | Protective slurry and preparation method thereof, protective sleeve containing protective slurry and preparation method thereof and application of protective sleeve in laser welding of stainless steel | |
| CN106336780B (en) | A kind of anti-corrosion adiabatic coating and preparation method thereof | |
| CN109207991B (en) | Shaft sleeve repairing process | |
| CN111139465A (en) | Manufacturing method for manufacturing composite steel pipe by laser | |
| CN102501028A (en) | Method for manufacturing zirconium elbow | |
| CN101214583A (en) | Method of welding foamed aluminium and alloy | |
| US3797087A (en) | Method of preparing oxidation-resistant brazed regenerator cores | |
| CN112341000B (en) | Carbon/carbon composite material SiC coating repairing modified glass material based on laser cladding method and preparation and use methods | |
| CN108070740B (en) | Laser repair material for repairing titanium alloy valve core and valve seat | |
| CN206089808U (en) | Take circle axle of keyway and semiconductor laser melts equipment of covering thereof | |
| CN112283481B (en) | Quartz tube structure and processing method thereof | |
| CN109437958B (en) | Method for connecting silicon carbide composite material pipe and silicon carbide ceramic end plug | |
| CN108034940B (en) | Turbine supercharging rotor shaft and preparation method thereof | |
| CN218262750U (en) | Semi-sealed shielding gas experiment box for laser cladding | |
| CN107457478B (en) | Expansion welding composite solid phase diffusion connection method for milling groove wallboard structure | |
| CN211540006U (en) | Tool for protecting heat treatment inside of welded liner tube | |
| CN116120824B (en) | Self-lubricating nuclear protective coating capable of being used in ocean high-temperature corrosion environment and preparation method thereof | |
| KR101803324B1 (en) | Manufacturing method of insulated load break switch case and insulated load break switch case manufactured using the same | |
| CN113695790B (en) | Double-layer coating for arc planing and cutting strip and preparation method thereof | |
| CN218108191U (en) | Nanocrystalline magnetic core epoxy powder combination spraying device | |
| CN218709988U (en) | Graphite transition roller | |
| CN117604416A (en) | High-temperature heat treatment method for large-size titanium alloy coil welding cylinder section | |
| CN111013515B (en) | Double-layer vertical quartz tube carrier and processing method thereof | |
| CN112845606B (en) | Method for processing taper sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |