CN104930269A - Spiral gas drainage pipe provided with epoxy resin layer and machining method thereof - Google Patents
Spiral gas drainage pipe provided with epoxy resin layer and machining method thereof Download PDFInfo
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- CN104930269A CN104930269A CN201510200515.0A CN201510200515A CN104930269A CN 104930269 A CN104930269 A CN 104930269A CN 201510200515 A CN201510200515 A CN 201510200515A CN 104930269 A CN104930269 A CN 104930269A
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- epoxy resin
- resin layer
- convex tendon
- shower nozzle
- drainage pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting 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
-
- 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
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- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
Abstract
The invention discloses a spiral gas drainage pipe provided with an epoxy resin layer and a machining method thereof. The spiral gas drainage pipe provided with the epoxy resin layer comprises a pipe body and a flange plate, and is coated with the epoxy resin layer on the surface. As the epoxy resin layer is arranged on the surface of the pipe body, the corrosion resistance of the pipe body can be improved; and the epoxy resin layer is excellent in corrosion resistance and strong in adhesive force, effectively resists the erosion of H2S, CO2, Cl2 in coal mines and oil and gas fields to metals, resists static electricity for a long time, and is widely applied to such pipe engineering fields as long-distance water delivery, petroleum, chemical engineering, natural gas, heating power, sewage treatment, water sources, bridges, steel structures and ocean water delivery piling.
Description
Technical field
The present invention relates to a kind of the helix gas drainage pipe and the processing method thereof that are provided with epoxy resin layer.
Background technique
Helix gas drainage pipeline is widely used in the field such as air-conditioning, down-hole gas sucking releasing, the existing spiral duct be made up of cold-rolled steel coils overcomes that original inorganic glass-fiber reinforced plastic poor toughness, fragility are large, yielding, the shortcoming such as damp suction surface halide accumulation, poor water resistance, and the shortcoming such as seamless steel pipe weight is large, installation difficulty is high, poor water resistance, corrosion-resistant, wall unevenness are even, and polyvinyl chloride pipe under moist, hot environment easily aging, under northern cold cold environment pipe shaft easily break, the shortcoming such as poor fire.But gas drainage pipe of the prior art is being rich in H
2s, CO
2, Cl
2deng colliery and oil gas field in anti-corrosion capability still not enough, zinc-plated body through 2-3 just need change, prior art is badly in need of the good helix gas drainage pipe being provided with epoxy resin layer of a kind of anticorrosion ability and processing method thereof.
Summary of the invention
The object of the invention is to overcome defect of the prior art, the helix gas drainage pipe being provided with epoxy resin layer providing a kind of anticorrosion ability good and processing method thereof.
For achieving the above object, technological scheme of the present invention provides a kind of helix gas drainage pipe being provided with epoxy resin layer, the described helix gas drainage pipe being provided with epoxy resin layer comprises body and flange plate, described in be provided with epoxy resin layer helix gas drainage tube-surface be coated with epoxy resin layer.By arranging the anti-corrosion capability that epoxy resin layer can improve body at tube surfaces, epoxy resin layer has excellent corrosion resistance, strong adhesion, effectively resists H in colliery and oil gas field
2s, CO
2, Cl
2to the erosion of metal, the pipework fields such as property of a specified duration is antistatic, is widely used in long distance water transfer, oil, chemical industry, rock gas, heating power, sewage treatment, water source, bridge, steel structure in China, ocean water delivery piling.
As preferably, described body by cold-rolled steel coils with while enclose to connect with its opposite side screw occlusion and form, cold-rolled steel coils screw occlusion encloses and connects produced convex tendon and all protrude to outer surface of tube body, body is socketed with moving flange plate, body one end is provided with baffle ring, and the body the other end is also provided with baffle ring or is connected with fixed flange; Described body, fixed flange, moving flange plate and baffle ring surface are coated with epoxy resin layer;
The U-shaped occlusion that U-shaped and its another side turnup that one side turnup of described cold-rolled steel coils becomes becomes and become convex tendon, one of them is U-shaped while tilt the outward edge U-shaped with another one and closely cooperate, the cold-rolled steel coils both sides of mutual occlusion are coplanar, the internal gearing limit of described convex tendon and outer occlusion limit are by being welded to connect, and described welding region is coated with epoxy resin layer.Such design can strengthen the anti-corrosion capability of the helix gas drainage pipe all parts being provided with epoxy resin layer further, does not stay dead angle.
As preferably, described epoxy resin layer thickness is the individual layer of 1 to 5mm.Such design both can reach etch-proof effect, again can be cost-saving, was preferred version.
As preferably, described epoxy resin layer is composite bed, described composite bed comprises epoxy resin gluing internal layer and epoxy resin corrosion protection is outer, the asbestos fiber or glass fibre that have for strengthening toughness is mixed in described epoxy resin corrosion protection skin, described epoxy resin gluing inner-layer thick degree is 1 to 2mm, and described epoxy resin corrosion protection skin is 1 to 3mm.Such design improves adhesion by epoxy resin gluing internal layer, prevents using process epoxy resin composite bed from departing from; Outer while playing corrosion-resisting function by epoxy resin corrosion protection; asbestos fiber is mixed or glass fibre can improve outer field toughness in skin; certain bending can be there is in especially longer body at the process middle tube body of transport assembling; epoxy resin composite bed the most easily ftractures near outer field region; damage; cause anti-corrosion protection to lose efficacy, epoxy resin corrosion protection skin can play and well prevent cracking role.
Be provided with a processing method for the helix gas drainage pipe of epoxy resin layer, comprise the following steps:
1), itemize processing, cold-rolled steel coils is cut into machining need strip;
2), tubulation, to be enclosed with its opposite side screw occlusion by cold-rolled steel coils by tube producer and connect, cold-rolled steel coils screw occlusion encloses and connects produced convex tendon and all protrude to outer surface of tube body;
3), cut, the body connect is enclosed in occlusion and is cut into required length;
4), flange welding, first moving flange plate is socketed on body, then baffle ring is welded on one end of body, by other for body one end welding baffle ring or fixed flange; Welding is passed through on the internal gearing limit of convex tendon and outer occlusion limit; Above-mentioned welding all uses semi-automatic carbon-dioxide arc welding welding machine to weld;
5), weld inspection, use heads for crank detection of ultrasonic bonding lines instrument butt welded seam to test, whether detection weld seam inside have crackle, be mingled with, pore, slag inclusion, lack of penetration and incomplete fusion defect, should be up to state standards; The pressurized container butt weld I grade of whole ultrasonic flaw detection is qualified, and the pressurized container butt weld II grade of local ultrasound wave inspection is qualified;
6), pressure testing inspection, by body two ends seal, in body, apply two barometric pressure with air pump, body be immersed in water; Water temperature is gradient to 40 DEG C from-40 DEG C, respectively stops 10 minutes at two end point temperatures places, find no bubble be considered as qualified;
7), Ultrasonic Cleaning, the body of test passes in step 6), moving flange plate, baffle ring and fixed flange are immersed in cleaning solution, ultrasonic power density is 0.35w/cm
2, clean time is 5-10min, hot-air seasoning after cleaning;
8), epoxy resin layer is applied, be preheating 10 minutes under the scope of 180-200 DEG C in preheating temperature by body, moving flange plate, baffle ring and fixed flange, epoxy resin be coated to tube surfaces by the mode of dip-coating, showering or electrostatic spraying and form epoxy resin layer;
9), solidify, by the workpiece in step 8) through melting levelling and then the solidification after about 15 minutes of 180 degree of-220 degree high-temperature baking.
Greatly can be improved the corrosion resistance of body by above technological scheme, the adhesion of epoxy resin, effectively resist in colliery and oil gas field H2S, CO2, Cl2 to the erosion of metal.Can improve the turbidity test before body coating by Ultrasonic Cleaning, thus improve the adhesion of epoxy resin and metal surface, the preheating of certain hour also can improve coating effect.
As preferably, the cleaning solution constituent in step 7) is: AEO 5-8%, coconut oil alkanolamide 8-10%, triethanolamine oleate 2-4%, MEA 8-10%, benzotriazole 0-1%, EDTA-disodium 1-2% and water 70-75%.Such cleaning solution cleaning performance is best, forms the stronger combined type cleaning of cleansing power with ultrasound.
As preferably, epoxy resin painting method in described step 8) is electrostatic spraying, described epoxy resin component comprises bisphenol-A type epoxy resin, curing agent, anti-static agent, fire retardant, degasser, gas-phase silica and filler composition, the parts by weight of described each component are: bisphenol-A type epoxy resin 100 parts, curing agent 20-40 part, anti-static agent 10-50 part, fire retardant 5-10 part, degasser 0.5-1. 0 parts, gas-phase silica 0.5-0.8 part, filler 10-50 part; Described filler Main Ingredients and Appearance is aluminium oxide.Such epoxy resin component can improve the adhesion of sprayed on material and metal surface, has good anticorrosion ability simultaneously.
As preferably, epoxy resin painting method in described step 8) is for meeting cladding process, the workpiece first dip-coating epoxy resin gluing internal layer of gained in step 7), after treating the solidification of epoxy resin gluing internal layer, by electrostatic spraying, epoxy resin gluing internal layer is thickeied, and then solidification, by electrostatic spraying or dip-coating epoxy resin corrosion protection skin.The weld seam of the flange plate of workpiece, baffle ring and convex tendon and pipe welding is the position be the most easily corroded, first through dip-coating be in order to make these positions by leaching mode well wrapped up, the later stage through electrostatic spraying be in order to surface obtains comparatively smooth surface.
As preferably, described epoxy resin gluing internal layer Ingredient Wt number is: bisphenol-A type epoxy resin 100 parts, curing agent 20-40 part, anti-static agent 10-50 part, fire retardant 5-10 part, degasser 0.5-1. 0 parts, gas-phase silica 0.5-0.8 part, filler 10-50 part; Described filler Main Ingredients and Appearance is aluminium oxide;
The outer parts by weight of described epoxy resin corrosion protection are, linear bisphenol A type epoxy resin 30-38 part, body bisphenol-A type epoxy resin 6-8 part, brominated bisphenol A type epoxy resin 3-6 part, phenol aldehyde modified firming agent 10-16 part, auxiliary agent 3-6 part, conductive black 2-5 part, filler 16-22 part, fire retardant 2-6 part, other conductive materials 2 parts, curing accelerator 0.3-1 part, described filler is asbestos fiber or glass fibre.Such epoxy resin gluing internal layer can improve the adhesion of sprayed on material and metal surface, prevents epoxy resin composite bed from coming off; Such epoxy resin corrosion protection skin can play good corrosion protection and prevent cracking role.
As preferably, in electrostatic spraying, body is rotated about axis along enclosing while axis horizontal movement, and in body, axis height is provided with inner wall shower nozzle, and inner wall shower nozzle sprays inwall; Be provided with outer wall shower nozzle outside body, outer wall shower nozzle comprises convex tendon shower nozzle and even surface shower nozzle, and described convex tendon shower nozzle is arranged in pairs, forms knuckle between convex tendon and even surface, and the nozzle wind of the convex tendon shower nozzle of described paired setting is not towards two knuckles of convex tendon; The even surface of outer wall and convex tendon are sprayed by even surface shower nozzle, and knuckle compensates spraying by convex tendon shower nozzle.Such spraying method can improve effect and the efficiency of spraying.The general vertical key of existing shower nozzle is arranged, the knuckle of convex tendon and the side sprayfused coating of convex tendon thinner, spraying effect is not good, and increasing convex tendon shower nozzle can compensate spraying, improves integral spray effect.
Advantage of the present invention and beneficial effect are: by arranging the anti-corrosion capability that epoxy resin layer can improve body at tube surfaces, and epoxy resin layer has excellent corrosion resistance, strong adhesion, effectively resist H in colliery and oil gas field
2s, CO
2, Cl
2to the erosion of metal, the pipework fields such as property of a specified duration is antistatic, is widely used in long distance water transfer, oil, chemical industry, rock gas, heating power, sewage treatment, water source, bridge, steel structure in China, ocean water delivery piling.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of cold-rolled steel coils occlusion mode in the present invention;
Fig. 3 is the pipe structure schematic diagram being provided with epoxy resin individual layer;
Fig. 4 is the pipe structure schematic diagram being provided with epoxy resin composite bed;
Fig. 5 is spray assembly structural representation.
In figure: 1, body; 3, convex tendon; 4, moving flange plate; 5, fixed flange; 7, baffle ring; 9, U-shaped; 10, cold-rolled steel coils both sides; 11, inner wall shower nozzle; 12, convex tendon shower nozzle; 13, even surface shower nozzle; 14, knuckle; 15, guide rail; 16, support; 17, driving mechanism; 18, strut; 19, epoxy resin layer; 20, epoxy resin gluing internal layer; 21, epoxy resin corrosion protection is outer.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples only for technological scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
As shown in Figures 1 to 5, a kind of helix gas drainage pipe being provided with epoxy resin layer, the described helix gas drainage pipe being provided with epoxy resin layer comprises body 1 and flange plate, described in be provided with epoxy resin layer helix gas drainage tube-surface be coated with epoxy resin layer 19.
Described body 1 by cold-rolled steel coils with while enclose to connect with its opposite side screw occlusion and form, cold-rolled steel coils screw occlusion encloses and connects produced convex tendon 3 and all protrude to body 1 outer surface, body 1 is socketed with moving flange plate 4, body 1 one end is provided with baffle ring 7, and body 1 the other end is also provided with baffle ring 7 or is connected with fixed flange 5; Described body 1, fixed flange 5, moving flange plate 4 and baffle ring 7 surface are coated with epoxy resin layer 19;
The U-shaped occlusion that U-shaped and its another side turnup that one side turnup of described cold-rolled steel coils becomes becomes and become convex tendon 3, one of them is U-shaped while tilt the outward edge U-shaped with another one and closely cooperate, the cold-rolled steel coils both sides 10 of mutual occlusion are coplanar, the internal gearing limit of described convex tendon 3 and outer occlusion limit are by being welded to connect, and described welding region is coated with epoxy resin layer 19.
As shown in Figure 3, described epoxy resin layer 19 thickness is the individual layer of 1 to 5mm.
As shown in Figure 4, as the one optimization that epoxy resin layer 19 is individual layers, described epoxy resin layer 19 can be composite bed, described composite bed comprises epoxy resin gluing internal layer 20 and epoxy resin corrosion protection skin 21, the asbestos fiber or glass fibre that have for strengthening toughness is mixed in described epoxy resin corrosion protection skin 21, described epoxy resin gluing internal layer 20 thickness is 1 to 2mm, and described epoxy resin corrosion protection skin 21 is 1 to 3mm.
Be provided with a processing method for the helix gas drainage pipe of epoxy resin layer, comprise the following steps:
1), itemize processing, cold-rolled steel coils is cut into machining need strip;
2), tubulation, to be enclosed with its opposite side screw occlusion by cold-rolled steel coils by tube producer and connect, cold-rolled steel coils screw occlusion encloses and connects produced convex tendon 3 and all protrude to body 1 outer surface;
3), cut, the body 1 connect is enclosed in occlusion and is cut into required length;
4), flange welding, first moving flange plate 4 is socketed on body 1, then baffle ring 7 is welded on one end of body 1, by body 1 in addition one end welding baffle ring 7 or fixed flange 5; Welding is passed through on the internal gearing limit of convex tendon 3 and outer occlusion limit; Above-mentioned welding all uses semi-automatic carbon-dioxide arc welding welding machine to weld;
5), weld inspection, use heads for crank detection of ultrasonic bonding lines instrument butt welded seam to test, whether detection weld seam inside have crackle, be mingled with, pore, slag inclusion, lack of penetration and incomplete fusion defect, should be up to state standards; The pressurized container butt weld I grade of whole ultrasonic flaw detection is qualified, and the pressurized container butt weld II grade of local ultrasound wave inspection is qualified;
6), pressure testing inspection, by body 1 two ends seal, in body 1, apply two barometric pressure with air pump, body 1 be immersed in water; Water temperature is gradient to 40 DEG C from-40 DEG C, respectively stops 10 minutes at two end point temperatures places, find no bubble be considered as qualified;
7), Ultrasonic Cleaning, immerse in cleaning solution by the body 1 of test passes in step 6), moving flange plate 4, baffle ring 7 and fixed flange 5, ultrasonic power density is 0.35w/cm
2, clean time is 5-10min, hot-air seasoning after cleaning;
8), epoxy resin layer 19 is applied, by the preheating 10 minutes under preheating temperature is the scope of 180-200 DEG C of body 1, moving flange plate 4, baffle ring 7 and fixed flange 5, epoxy resin is coated to body 1 surface by the mode of dip-coating, showering or electrostatic spraying and forms epoxy resin layer 19; The mode of electrostatic spraying will reach more than 200 microns;
9), solidify, by the workpiece in step 8) through melting levelling and then the solidification after about 15 minutes of 180 degree of-220 degree high-temperature baking.
Cleaning solution constituent in step 7) is: AEO 5-8%, coconut oil alkanolamide 8-10%, triethanolamine oleate 2-4%, MEA 8-10%, benzotriazole 0-1%, EDTA-disodium 1-2% and water 70-75%.AEO is a kind of non-ionic surfactant agent, and the ehter bond in molecule is not easily destroyed by acid, alkali, so stability is higher, better water-soluble, electrolyte-resistant, is easy to biodegradation, and foam is little plays good emulsification, foaming, decontamination; Coconut oil alkanolamide has good thickening, foam enhancing, foam stability energy as non-ionic surfactant agent, can carry out emulsification deoil to the greasy dirt on body 1; Triethanolamine oleate is non-ionic surfactant agent, has excellent emulsification and dispersive property; Foaming power is strong, and foam is fine and smooth; In acidity and alkaline medium, stability is strong; There are good washing and antirust ability; MEA is rust preventing agent; Benzotriazole is corrosion inhibitor; EDTA-disodium is complexing agent.Hyperacoustic physical cleaning is combined with the chemical cleaning of above cleaning solution, and the greasy dirt on body 1, rusty stain and impurity can be made to be cleaned thoroughly.
As the situation that epoxy resin is individual layer, epoxy resin painting method in described step 8) is electrostatic spraying, described epoxy resin component comprises bisphenol-A type epoxy resin, curing agent, anti-static agent, fire retardant, degasser, gas-phase silica and filler composition, the parts by weight of described each component are: bisphenol-A type epoxy resin 100 parts, curing agent 20-40 part, anti-static agent 10-50 part, fire retardant 5-10 part, degasser 0.5-1. 0 parts, gas-phase silica 0.5-0.8 part, filler 10-50 part; Described filler Main Ingredients and Appearance is aluminium oxide.Can realize the good anticorrosion ability of coating, antistatic effect by above component, especially filler is mainly the adhesion that aluminium oxide can improve coating greatly, prevents layer from coming off.
As the situation that epoxy resin is composite bed, epoxy resin painting method in described step 8) is for meeting cladding process, the workpiece first dip-coating epoxy resin gluing internal layer 20 of gained in step 7), after treating the solidification of epoxy resin gluing internal layer 20, by electrostatic spraying, epoxy resin gluing internal layer 20 is thickeied, and then solidification, by electrostatic spraying or dip-coating epoxy resin corrosion protection skin 21.The time of dip-coating is 5-10min, and the weld seam that the flange plate of workpiece, baffle ring 7 and convex tendon 3 weld with body 1 is the position be the most easily corroded, first through dip-coating be to make these positions well be wrapped up by the mode of leaching.
Described epoxy resin gluing internal layer 20 Ingredient Wt number is: bisphenol-A type epoxy resin 100 parts, curing agent 20-40 part, anti-static agent 10-50 part, fire retardant 5-10 part, degasser 0.5-1. 0 parts, gas-phase silica 0.5-0.8 part, filler 10-50 part; Described filler Main Ingredients and Appearance is aluminium oxide;
Outer 21 parts by weight of described epoxy resin corrosion protection are, linear bisphenol A type epoxy resin 30-38 part, body bisphenol-A type epoxy resin 6-8 part, brominated bisphenol A type epoxy resin 3-6 part, phenol aldehyde modified firming agent 10-16 part, auxiliary agent 3-6 part, conductive black 2-5 part, filler 16-22 part, fire retardant 2-6 part, other conductive materials 2 parts, curing accelerator 0.3-1 part, described filler is asbestos fiber or glass fibre.Such epoxy resin gluing internal layer 20 can improve the adhesion of sprayed on material and metal surface, prevents epoxy resin composite bed from coming off; Such epoxy resin corrosion protection skin 21 can play good corrosion protection and prevent cracking role.
In electrostatic spraying, body 1 is rotated about axis along enclosing while axis horizontal movement, and in body 1, axis height is provided with inner wall shower nozzle 11, and inner wall shower nozzle 11 pairs of inwalls spray; Outer wall shower nozzle is provided with outside body 1, outer wall shower nozzle comprises convex tendon shower nozzle 12 and even surface shower nozzle 13, described convex tendon shower nozzle 12 is arranged in pairs, forms knuckle 14 between convex tendon 3 and even surface, and the nozzle wind of the convex tendon shower nozzle 12 of described paired setting is not towards two knuckles 14 of convex tendon 3; Even surface and the convex tendon 3 of outer wall are sprayed by even surface shower nozzle 13, and knuckle 14 compensates spraying by convex tendon shower nozzle 12.
As Fig. 5, electrostatic spraying is completed by spray assembly, described spray assembly comprises guide rail 15, be slidably connected at the support 16 on guide rail 15, described support 16 is provided with and drives body 1 to enclose the driving mechanism 17 be rotated about axis, described guide rail 15 upper end is provided with inner wall shower nozzle 11, described inner wall shower nozzle 11 is arranged on strut 18 one end, described strut 18 is arranged along body 1 axis, described body 1 upper end is provided with outer wall shower nozzle, described outer wall shower nozzle comprises convex tendon shower nozzle 12 and even surface shower nozzle 13, even surface shower nozzle 13 nozzle down, convex tendon shower nozzle 12 is arranged in pairs, the nozzle wind of the convex tendon shower nozzle 12 of paired setting is not towards two knuckles 14 of convex tendon 3.
When spraying, inner wall shower nozzle 11 is fixed with convex tendon shower nozzle 12 and even surface shower nozzle 13 position, body 1 slides along guide rail 15 and rotates under the driving of driving mechanism 17 simultaneously, body 1 inner and outer wall is sprayed under inner wall shower nozzle 11 and even surface shower nozzle 13 act on, because convex tendon 3 knuckle 14 and side are not easily sprayed, so increase convex tendon shower nozzle 12 pairs of knuckles 14 and side compensate spraying, by rational control, the region that the nozzle of the convex tendon shower nozzle 12 arranged in pairs covers is the region of spiral convex rib 3 process just.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. be provided with a helix gas drainage pipe for epoxy resin layer, described in be provided with epoxy resin layer helix gas drainage pipe comprise body and flange plate, it is characterized in that: described in be provided with epoxy resin layer helix gas drainage tube-surface be coated with epoxy resin layer.
2. be provided with the helix gas drainage pipe of epoxy resin layer as claimed in claim 1, it is characterized in that: described body is formed to enclose to connect with its opposite side screw occlusion by cold-rolled steel coils, cold-rolled steel coils screw occlusion encloses and connects produced convex tendon and all protrude to outer surface of tube body, body is socketed with moving flange plate, body one end is provided with baffle ring, and the body the other end is also provided with baffle ring or is connected with fixed flange; Described body, fixed flange, moving flange plate and baffle ring surface are coated with epoxy resin layer;
The U-shaped occlusion that U-shaped and its another side turnup that one side turnup of described cold-rolled steel coils becomes becomes and become convex tendon, one of them is U-shaped while tilt the outward edge U-shaped with another one and closely cooperate, the cold-rolled steel coils both sides of mutual occlusion are coplanar, the internal gearing limit of described convex tendon and outer occlusion limit are by being welded to connect, and described welding region is coated with epoxy resin layer.
3. be provided with the helix gas drainage pipe of epoxy resin layer as claimed in claim 1 or 2, it is characterized in that: described epoxy resin layer thickness is the individual layer of 1 to 5mm.
4. be provided with the helix gas drainage pipe of epoxy resin layer as claimed in claim 1 or 2, it is characterized in that: described epoxy resin layer is composite bed, described composite bed comprises epoxy resin gluing internal layer and epoxy resin corrosion protection is outer, the asbestos fiber or glass fibre that have for strengthening toughness is mixed in described epoxy resin corrosion protection skin, described epoxy resin gluing inner-layer thick degree is 1 to 2mm, and described epoxy resin corrosion protection skin is 1 to 3mm.
5. be provided with a processing method for the helix gas drainage pipe of epoxy resin layer, it is characterized in that: comprise the following steps:
1), itemize processing, cold-rolled steel coils is cut into machining need strip;
2), tubulation, to be enclosed with its opposite side screw occlusion by cold-rolled steel coils by tube producer and connect, cold-rolled steel coils screw occlusion encloses and connects produced convex tendon and all protrude to outer surface of tube body;
3), cut, the body connect is enclosed in occlusion and is cut into required length;
4), flange welding, first moving flange plate is socketed on body, then baffle ring is welded on one end of body, by other for body one end welding baffle ring or fixed flange; Welding is passed through on the internal gearing limit of convex tendon and outer occlusion limit; Above-mentioned welding all uses semi-automatic carbon-dioxide arc welding welding machine to weld;
5), weld inspection, use heads for crank detection of ultrasonic bonding lines instrument butt welded seam to test, whether detection weld seam inside have crackle, be mingled with, pore, slag inclusion, lack of penetration and incomplete fusion defect, should be up to state standards; The pressurized container butt weld I grade of whole ultrasonic flaw detection is qualified, and the pressurized container butt weld II grade of local ultrasound wave inspection is qualified;
6), pressure testing inspection, by body two ends seal, in body, apply two barometric pressure with air pump, body be immersed in water; Water temperature is gradient to 40 DEG C from-40 DEG C, respectively stops 10 minutes at two end point temperatures places, find no bubble be considered as qualified;
7), Ultrasonic Cleaning, the body of test passes in step 6), moving flange plate, baffle ring and fixed flange are immersed in cleaning solution, ultrasonic power density is 0.35w/cm
2, clean time is 5-10min, hot-air seasoning after cleaning;
8), epoxy resin layer is applied, be preheating 10 minutes under the scope of 180-200 DEG C in preheating temperature by body, moving flange plate, baffle ring and fixed flange, epoxy resin be coated to tube surfaces by the mode of dip-coating, showering or electrostatic spraying and form epoxy resin layer;
9), solidify, by the workpiece in step 8) through melting levelling and then the solidification after about 15 minutes of 180 degree of-220 degree high-temperature baking.
6. be provided with the processing method of the helix gas drainage pipe of epoxy resin layer as claimed in claim 5, it is characterized in that: the cleaning solution constituent in step 7) is: AEO 5-8%, coconut oil alkanolamide 8-10%, triethanolamine oleate 2-4%, MEA 8-10%, benzotriazole 0-1%, EDTA-disodium 1-2% and water 70-75%.
7. be provided with the processing method of the helix gas drainage pipe of epoxy resin layer as claimed in claim 5, it is characterized in that: the epoxy resin painting method in described step 8) is electrostatic spraying, described epoxy resin component comprises bisphenol-A type epoxy resin, curing agent, anti-static agent, fire retardant, degasser, gas-phase silica and filler composition, the parts by weight of described each component are: bisphenol-A type epoxy resin 100 parts, curing agent 20-40 part, anti-static agent 10-50 part, fire retardant 5-10 part, degasser 0.5-1. 0 parts, gas-phase silica 0.5-0.8 part, filler 10-50 part, described filler Main Ingredients and Appearance is aluminium oxide.
8. be provided with the processing method of the helix gas drainage pipe of epoxy resin layer as claimed in claim 5, it is characterized in that: the epoxy resin painting method in described step 8) is for meeting cladding process, the workpiece first dip-coating epoxy resin gluing internal layer of gained in step 7), after treating the solidification of epoxy resin gluing internal layer, by electrostatic spraying, epoxy resin gluing internal layer is thickeied, and then solidification, by electrostatic spraying or dip-coating epoxy resin corrosion protection skin.
9. be provided with the processing method of the helix gas drainage pipe of epoxy resin layer as claimed in claim 8, it is characterized in that: described epoxy resin gluing internal layer Ingredient Wt number is: bisphenol-A type epoxy resin 100 parts, curing agent 20-40 part, anti-static agent 10-50 part, fire retardant 5-10 part, degasser 0.5-1. 0 parts, gas-phase silica 0.5-0.8 part, filler 10-50 part; Described filler Main Ingredients and Appearance is aluminium oxide;
The outer parts by weight of described epoxy resin corrosion protection are, linear bisphenol A type epoxy resin 30-38 part, body bisphenol-A type epoxy resin 6-8 part, brominated bisphenol A type epoxy resin 3-6 part, phenol aldehyde modified firming agent 10-16 part, auxiliary agent 3-6 part, conductive black 2-5 part, filler 16-22 part, fire retardant 2-6 part, other conductive materials 2 parts, curing accelerator 0.3-1 part, described filler is asbestos fiber or glass fibre.
10. the processing method being provided with the helix gas drainage pipe of epoxy resin layer as described in claim 5 or 8 or 9, it is characterized in that: in electrostatic spraying, body is rotated about axis along enclosing while axis horizontal movement, in body, axis height is provided with inner wall shower nozzle, and inner wall shower nozzle sprays inwall; Be provided with outer wall shower nozzle outside body, outer wall shower nozzle comprises convex tendon shower nozzle and even surface shower nozzle, and described convex tendon shower nozzle is arranged in pairs, forms knuckle between convex tendon and even surface, and the nozzle wind of the convex tendon shower nozzle of described paired setting is not towards two knuckles of convex tendon; The even surface of outer wall and convex tendon are sprayed by even surface shower nozzle, and knuckle compensates spraying by convex tendon shower nozzle.
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