CN109648768A - A kind of steel combination process such as steel lining tetrafluoro cage hoop - Google Patents
A kind of steel combination process such as steel lining tetrafluoro cage hoop Download PDFInfo
- Publication number
- CN109648768A CN109648768A CN201811388122.7A CN201811388122A CN109648768A CN 109648768 A CN109648768 A CN 109648768A CN 201811388122 A CN201811388122 A CN 201811388122A CN 109648768 A CN109648768 A CN 109648768A
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- Prior art keywords
- steel
- pipe
- cage
- pressure
- ptfe
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 85
- 239000010959 steel Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 23
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 58
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 58
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000000945 filler Substances 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 125000004122 cyclic group Chemical group 0.000 claims description 15
- 239000000047 product Substances 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 15
- 239000010935 stainless steel Substances 0.000 claims description 15
- 238000005260 corrosion Methods 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000012797 qualification Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 6
- 230000008961 swelling Effects 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 5
- 238000010892 electric spark Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 238000007592 spray painting technique Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 239000002131 composite material Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003670 easy-to-clean Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/006—Pressing and sintering powders, granules or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
- B29C43/183—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles the preformed layer being a lining, e.g. shaped in the mould before compression moulding, or a preformed shell adapted to the shape of the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- 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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/021—T- or cross-pieces
-
- 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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/026—Branch units, e.g. made in one piece, welded, riveted with a layer protecting against erosion
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/188—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for branching pipes; for joining pipes to walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C2043/3205—Particular pressure exerting means for making definite articles
- B29C2043/3238—Particular pressure exerting means for making definite articles pressurized liquid acting directly or indirectly on the material to be formed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/585—Measuring, controlling or regulating detecting defects, e.g. foreign matter between the moulds, inaccurate position, breakage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the steel composite technology such as steel lining tetrafluoro cage hoop fields, the steel combination process such as especially a kind of steel lining tetrafluoro cage hoop, it falls off for existing PTFE lining, play flat, the dilatancy problem of drum suction, it is comprised the following steps that, molding, again by hydraulic pressure interface pressure water injection into workpiece shell, pressure is set to reach the peak of setting, and pressure will be kept 3-4 hours；Intumescent filler object, then polytetrafluoroethylene (PTFE) powder is injected between the gap in S6；Sintering, shove charge sintering；It is preheated 6 hours in furnace, polytetrafluoroethylene ethylene layer is made to reach synchronous thermal change coefficient with metalwork, gradually heated up, temperature-rise period slowly will be carried out orderly, finally reach 385 degrees Celsius, keep the temperature 6 hours, and then cooling slowly stage by stage is sintered overall process 36 hours.The present invention passes through the steel lining tetrafluoro cage hoop pipe-line equipment of equal steel combination process production, and anticorrosion effect is good, and composite effect is good, will not Automatic-falling, will not more play drum and inhale flat, dilatancy.
Description
Technical field
The present invention relates to the steel composite technology fields such as steel lining tetrafluoro cage hoop more particularly to a kind of steel lining tetrafluoro cage hoop etc.
Steel combination process.
Background technique
Deep-etching, high/low temperature and the special pipeline of negative pressure area, need corrosion-resistant, high temperature resistance pipeline, existing
Pipeline integraty is poor, and internal anti-corrosion layer adsorption capacity is weak；Polytetrafluoroethylene (PTFE) (is abbreviated as PTFE), commonly referred to as " not snearing
Layer " or " material easy to clean ".This material has the characteristics that antiacid alkali resistant, resists various organic solvents, is practically insoluble in all
Solvent.Meanwhile polytetrafluoroethylene (PTFE) has the characteristics that resistant to high temperature, its coefficient of friction is extremely low, so after lubricating action being made, also
Become the ideal coating of water pipe internal layer easy to clean.
How polytetrafluoroethylene (PTFE) to be served as a contrast on the inner wall of steel pipe, moreover it is possible to adapt in positive/negative-pressure, high-temperature, deep-etching, quenching
It is used under shock heating or hot and cold alternation adverse circumstances, not will lead to PTFE lining and fall off, play phenomena such as flat drum suction, dilatancy,
The present invention proposes that the steel such as implementation are compound on the basis of molding, handled by internal structure, enhances adhesive force, lining structure increases
Steel band makes it while equal steel are compound, steel modeling adhesive strength is substantially increased, for this purpose, the present invention proposes a kind of steel lining tetrafluoro
The steel combination process such as cage hoop.
Summary of the invention
A kind of steel combination process such as steel lining tetrafluoro cage hoop proposed by the present invention solve existing PTFE lining and fall off, play drum
Inhale flat, dilatancy problem.
To achieve the goals above, present invention employs following technical solutions:
A kind of steel combination process such as steel lining tetrafluoro cage hoop, comprise the following steps that,
S1, shell production make workpiece shell, rubber inner membrance and qualitative internal model according to the geometry of workpiece；
S2 makes cage hoop, prepares the cyclic annular steel plate to match with workpiece inner walls, in the peripheral surface etc. of cyclic annular steel plate
Distance offers aperture；
S3, will be on the equidistant inner wall for being welded on workpiece shell of multiple cyclic annular steel plates；
S4 is examined for the first time, and welding makes standard, strict control production process according to high-pressure bottle；
S5, sandblasting, any shell and the component for needing Fluorine-lined, it is necessary to before Fluorine-lined, blasting treatment is carried out to metal surface,
Grease on cleared all metal surfaces, oxide skin, corrosion product and all sundries reach metal surface without any visible residual
Object is presented uniform metal true qualities, and has roughness, should reach in HGJ34-90Technical requirements standard, metal
Shell can reach lining construction requirement；
S6, assembling, workpiece shell, rubber inner membrance and qualitative internal model is assembled together, then gets up with workpiece overall package, root
It is calculated according to thickness requirements, has spacing between workpiece shell and workpiece, polytetrafluoroethylene (PTFE) powder is uniformly added between gap；
S7, molding, then by hydraulic pressure interface pressure water injection into workpiece shell, pressure carries out stage by stage, to make polytetrafluoro
Gas in ethylene powder is gradually discharged, and so that pressure is reached the peak of setting, and pressure will be kept 3-4 hours；
S8, second of inspection of semifinished product, tests to semi-finished product after pressure release, including density, thickness and electric spark leak hunting
It examines, is reloaded into rubber inner membrance and qualitative internal model；
S9, intumescent filler object, then polytetrafluoroethylene (PTFE) powder is injected between the gap in S6；
S10, sintering, shove charge sintering；It is preheated 6 hours in furnace, polytetrafluoroethylene ethylene layer is made to reach synchronous thermal change system with metalwork
Number, is gradually being heated up, and temperature-rise period slowly will be carried out orderly, finally reaches 385 degrees Celsius, keeps the temperature 6 hours, then slowly
Cooling stage by stage is sintered overall process 36 hours；
S11, turning sealing surface remove mold, then carry out finished product treatment, flange sealing surface polytetrafluoroethylene ethylene layer vehicle
It cuts, electricity consumption Spark plug optical fiber sensor instrument carries out micropore detection to backing layer, detects mass defect, is exported according to teflon lined thickness
Voltage 20kV-30kV, probe moves above speed in corrosion protective lining layer and detects no more than 100mm/s, not puncture as qualification, inspection
It tests qualified product and carries out metal shell spray painting processing, then tested by quality department to finished product, finished product qualification wrap
It is packed into library.
Preferably, in the S3, it will be pre-filled with tetrafluoro powder in the aperture of cyclic annular steel plate, it is attached to form polytetrafluoroethylene (PTFE)
Layer.
Preferably, in the S7, using hydraulic press pressure water injection, make membrane swelling in internal rubber, pressure to 10MPa-
22MPa；Under pressure, make to reach 2.16-2.27g/cm3Density and form.
Preferably, in the S11, according to tetrafluoro liner thickness output voltage 25kV, probe moves on corrosion protective lining layer
Dynamic speed 50mm/s detection.
Preferably, in the S7, using hydraulic press pressure water injection, make membrane swelling in internal rubber, pressure to 18MPa；?
Under pressure effect, make to reach 2.20g/cm3Density and form.
A kind of steel lining tetrafluoro cage hoop pipe-line equipment, including pipe-line equipment main body, the both ends outer wall of the pipe-line equipment main body
On be welded with connecting flange, the pipe-line equipment main body includes stainless-steel pipe, along pipe-line equipment main body length direction and
It is equidistant on the inner wall of stainless-steel pipe to be welded with multiple cage hoop steels, and cage hoop steel banded structure annular in shape, it is described
The inner wall of cage hoop steel is circumferentially equidistant from aperture is equipped with, and is filled with the attached layer of polytetrafluoroethylene (PTFE) in the aperture, is located at polytetrafluoroethyl-ne
Polytetrafluoroethylene (PTFE) lining is provided on the inner wall of the stainless-steel pipe of the attached layer of alkene and cage hoop iron belt surface.
Preferably, the central axis of the cage hoop steel and stainless-steel pipe is on same central axis, cage hoop iron
The outer wall of band is welded on the inner wall of stainless-steel pipe.
Preferably, the outer wall two sides of the pipe-line equipment main body are welded with saddle.
Preferably, nameplate is fixed with by screw in the middle part of the outer wall of the pipe-line equipment main body.
Preferably, the outer wall of the connecting flange is circumferentially equidistant from equipped with mounting hole.
Compared with prior art, it the beneficial effects of the present invention are: making mold using geometrical principle, reserves and needs lining thick
PTFE powder is uniformly put into, is pressurizeed using hydraulic press by the gap of degree, expands internal rubber mold, pressure to 10MPa-
22MPa.Under pressure, the gas in PTFE powder is discharged, and reaches 2.16-2.27/m3Density and form, thus
It superior can achieve the effect that impermeabilisation, high temperature and high pressure；Under the action of high temperature, PTFE molecular structure is made to combine closely；It is high
The lower rubber inner membrance automatic expansion of temperature, in combination with the anti-expansive force of PTFE itself, the secondary compression of workpiece lining, while in high temperature
PTFE is in a molten state, and PTFE molecular structure in a molten state is made to combine closely, while being compounded in one with cyclic annular steel plate
It rises, so that reaching steel moulds integrated effect, it is even closer compound with shell to make PTFE, to reach the effect of high temperature resistant vacuum
Fruit, by the steel lining tetrafluoro cage hoop pipe-line equipment of equal steel combination process production, anticorrosion effect is good, and composite effect is good, will not be certainly
It is dynamic to fall off, it will not more play drum and inhale flat, dilatancy.
Detailed description of the invention
Fig. 1 is a kind of tooling structural map of the steel combination process such as steel lining tetrafluoro cage hoop proposed by the present invention；
Fig. 2 is a kind of structural schematic diagram of steel lining tetrafluoro cage hoop pipe-line equipment proposed by the present invention；
Fig. 3 is the enlarged drawing of part A in Fig. 2；
Fig. 4 is the structural schematic diagram of cage hoop steel in a kind of steel lining tetrafluoro cage hoop pipe-line equipment proposed by the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-4, the steel combination process such as a kind of steel lining tetrafluoro cage hoop, comprises the following steps that,
S1, shell production make workpiece shell, rubber inner membrance and qualitative internal model according to the geometry of workpiece；
S2 makes cage hoop, prepares the cyclic annular steel plate to match with workpiece inner walls, in the peripheral surface etc. of cyclic annular steel plate
Distance offers aperture；
S3, will be on the equidistant inner wall for being welded on workpiece shell of multiple cyclic annular steel plates；
S4 is examined for the first time, and welding makes standard, strict control production process according to high-pressure bottle；
S5, sandblasting, any shell and the component for needing Fluorine-lined, it is necessary to before Fluorine-lined, blasting treatment is carried out to metal surface,
Grease on cleared all metal surfaces, oxide skin, corrosion product and all sundries reach metal surface without any visible residual
Object is presented uniform metal true qualities, and has roughness, should reach in HGJ34-90Technical requirements standard, metal
Shell can reach lining construction requirement；
S6, assembling, workpiece shell, rubber inner membrance and qualitative internal model is assembled together, then gets up with workpiece overall package, root
It is calculated according to thickness requirements, has spacing between workpiece shell and workpiece, polytetrafluoroethylene (PTFE) powder is uniformly added between gap；
S7, molding, then by hydraulic pressure interface pressure water injection into workpiece shell, pressure carries out stage by stage, to make polytetrafluoro
Gas in ethylene powder is gradually discharged, and so that pressure is reached the peak of setting, and pressure will be kept 3-4 hours；
S8, second of inspection of semifinished product, tests to semi-finished product after pressure release, including density, thickness and electric spark leak hunting
It examines, is reloaded into rubber inner membrance and qualitative internal model；
S9, intumescent filler object, then polytetrafluoroethylene (PTFE) powder is injected between the gap in S6；
S10, sintering, shove charge sintering；It is preheated 6 hours in furnace, polytetrafluoroethylene ethylene layer is made to reach synchronous thermal change system with metalwork
Number, is gradually being heated up, and temperature-rise period slowly will be carried out orderly, finally reaches 385 degrees Celsius, keeps the temperature 6 hours, then slowly
Cooling stage by stage is sintered overall process 36 hours；
S11, turning sealing surface remove mold, then carry out finished product treatment, flange sealing surface polytetrafluoroethylene ethylene layer vehicle
It cuts, electricity consumption Spark plug optical fiber sensor instrument carries out micropore detection to backing layer, detects mass defect, is exported according to teflon lined thickness
Voltage 20kV-30kV, probe moves above speed in corrosion protective lining layer and detects no more than 100mm/s, not puncture as qualification, inspection
It tests qualified product and carries out metal shell spray painting processing, then tested by quality department to finished product, finished product qualification wrap
It is packed into library.
In present embodiment, in the S3, it will be pre-filled with tetrafluoro powder in the aperture of cyclic annular steel plate, form polytetrafluoro
The attached layer of ethylene.
In present embodiment, in the S7, using hydraulic press pressure water injection, make membrane swelling in internal rubber, pressure is extremely
10MPa-22MPa；Under pressure, make to reach 2.16-2.27g/cm3Density and form.
In present embodiment, in the S11, according to tetrafluoro liner thickness output voltage 25kV, pop one's head in corrosion protective lining layer
Move above speed 50mm/s detection.
In present embodiment, in the S7, using hydraulic press pressure water injection, make membrane swelling in internal rubber, pressure is extremely
18MPa；Under pressure, make to reach 2.20g/cm3Density and form.
A kind of steel lining tetrafluoro cage hoop pipe-line equipment, including pipe-line equipment main body 1, outside the both ends of the pipe-line equipment main body 1
Connecting flange 2 is welded on wall, the pipe-line equipment main body 1 includes stainless-steel pipe 101, along the length of pipe-line equipment main body 1
Degree direction and be located at it is equidistant on the inner wall of stainless-steel pipe 101 be welded with multiple cage hoop steels 102, and cage hoop steel 102 is in
Cyclic annular banded structure, the inner wall of the cage hoop steel 102 is circumferentially equidistant from aperture 103 is equipped with, and is filled in the aperture 103 poly-
The attached layer 104 of tetrafluoroethene, on the inner wall of the stainless-steel pipe 101 on the attached layer 104 of polytetrafluoroethylene (PTFE) and 102 surface of cage hoop steel
It is provided with polytetrafluoroethylene (PTFE) lining 105.
In present embodiment, the central axis of the cage hoop steel 102 and stainless-steel pipe 101 is in same central axis
On line, the outer wall of cage hoop steel 102 is welded on the inner wall of stainless-steel pipe 101.
In present embodiment, the outer wall two sides of the pipe-line equipment main body 1 are welded with saddle 3.
In present embodiment, nameplate 4 is fixed with by screw in the middle part of the outer wall of the pipe-line equipment main body 1.
In present embodiment, the outer wall of the connecting flange 2 is circumferentially equidistant from equipped with mounting hole.
In the use of the present invention, making mold using geometrical principle, the gap for needing liner thickness is reserved, by PTFE powder
Uniformly distributed investment, is pressurizeed using hydraulic press, expands internal rubber mold, pressure to 10MPa-22MPa.Under pressure, make
Gas discharge in PTFE powder, and reach 2.16-2.27/m3Density and form, reach impermeabilisation, height so as to superior
The effect of mild high pressure；Under the action of high temperature, PTFE molecular structure is made to combine closely；Rubber inner membrance automatic expansion under high temperature,
In combination with the anti-expansive force of PTFE itself, the secondary compression of workpiece lining, while the PTFE in high temperature is in a molten state, makes to locate
It combines closely in the PTFE molecular structure of molten condition, while being combined with each other with cyclic annular steel plate, to reach steel modeling integration
Effect, it is even closer compound with shell to make PTFE, to achieve the effect that high temperature resistant vacuum, passes through equal steel combination process system
The steel lining tetrafluoro cage banded penstock road of work, anticorrosion effect is good, and composite effect is good, will not Automatic-falling, will not more rise drum inhale it is flat, expansion
Deformation.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. steel combination process such as a kind of steel lining tetrafluoro cage hoops, which is characterized in that it comprises the following steps that,
S1, shell production make workpiece shell, rubber inner membrance and qualitative internal model according to the geometry of workpiece；
S2 makes cage hoop, prepares the cyclic annular steel plate to match with workpiece inner walls, equidistant in the peripheral surface of cyclic annular steel plate
Offer aperture；
S3, will be on the equidistant inner wall for being welded on workpiece shell of multiple cyclic annular steel plates；
S4 is examined for the first time, and welding makes standard, strict control production process according to high-pressure bottle；
S5, sandblasting, any shell and the component for needing Fluorine-lined, it is necessary to before Fluorine-lined, blasting treatment is carried out to metal surface, it is cleared
Grease on all metal surfaces, oxide skin, corrosion product and all sundries reach metal surface without any visible residue,
Uniform metal true qualities are presented, and have roughness, should reach in HGJ34-90Technical requirements standard, metal-back
Body can reach lining construction requirement；
S6, assembling, workpiece shell, rubber inner membrance and qualitative internal model is assembled together, then gets up with workpiece overall package, according to thickness
Degree demand calculates, and has spacing between workpiece shell and workpiece, polytetrafluoroethylene (PTFE) powder is uniformly added between gap；
S7, molding, then by hydraulic pressure interface pressure water injection into workpiece shell, pressure carries out stage by stage, to make polytetrafluoroethylene (PTFE)
Gas in powder is gradually discharged, and so that pressure is reached the peak of setting, and pressure will be kept 3-4 hours；
S8, second of inspection of semifinished product, tests to semi-finished product after pressure release, including density, thickness and electric spark leak hunting inspection,
It is reloaded into rubber inner membrance and qualitative internal model；
S9, intumescent filler object, then polytetrafluoroethylene (PTFE) powder is injected between the gap in S6；
S10, sintering, shove charge sintering；It is preheated 6 hours in furnace, polytetrafluoroethylene ethylene layer is made to reach synchronous thermal change coefficient with metalwork,
It is gradually heated up, temperature-rise period slowly will be carried out orderly, finally reach 385 degrees Celsius, keep the temperature 6 hours, then slowly sublevel
The cooling of section is sintered overall process 36 hours；
S11, turning sealing surface remove mold, then carry out finished product treatment, flange sealing surface polytetrafluoroethylene ethylene layer turning, use
Electric spark detector carries out micropore detection to backing layer, mass defect is detected, according to teflon lined thickness output voltage
20kV-30kV, probe move above speed in corrosion protective lining layer and detect no more than 100mm/s, not puncture as qualification, examine and close
The product of lattice carries out metal shell spray painting processing, then is tested by quality department to finished product, and finished product qualification be packaged into
Library.
2. steel combination process such as a kind of steel lining tetrafluoro cage hoops according to claim 1, which is characterized in that, will in the S3
It is pre-filled with tetrafluoro powder in the aperture of cyclic annular steel plate, forms the attached layer of polytetrafluoroethylene (PTFE).
3. steel combination process such as a kind of steel lining tetrafluoro cage hoops according to claim 1, which is characterized in that in the S7, make
With hydraulic press pressure water injection, make membrane swelling in internal rubber, pressure to 10MPa-22MPa；Under pressure, make to reach
2.16-2.27g/cm3Density and form.
4. steel combination process such as a kind of steel lining tetrafluoro cage hoops according to claim 1, which is characterized in that in the S11, root
According to tetrafluoro liner thickness output voltage 25kV, probe moves above speed 50mm/s detection in corrosion protective lining layer.
5. steel combination process such as a kind of steel lining tetrafluoro cage hoops according to claim 3, which is characterized in that in the S7, make
With hydraulic press pressure water injection, make membrane swelling in internal rubber, pressure to 18MPa；Under pressure, make to reach 2.20g/cm3
Density and form.
6. a kind of steel lining tetrafluoro cage hoop pipe-line equipment, which is characterized in that including pipe-line equipment main body (1), the pipe-line equipment master
It being welded on the both ends outer wall of body (1) connecting flange (2), the pipe-line equipment main body (1) includes stainless-steel pipe (101),
It is equidistant on length direction along pipe-line equipment main body (1) and the inner wall positioned at stainless-steel pipe (101) to be welded with multiple cage hoops
Steel band (102), and cage hoop steel (102) banded structure annular in shape, the inner wall of the cage hoop steel (102) are circumferentially equidistant from being equipped with
Aperture (103) is filled with the attached layer of polytetrafluoroethylene (PTFE) (104) in the aperture (103), be located at the attached layer of polytetrafluoroethylene (PTFE) (104) and
Polytetrafluoroethylene (PTFE) lining (105) are provided on the inner wall of the stainless-steel pipe (101) on cage hoop steel (102) surface.
7. a kind of steel lining tetrafluoro cage hoop pipe-line equipment according to claim 6, which is characterized in that the cage hoop steel
(102) it is on same central axis with the central axis of stainless-steel pipe (101), the outer wall welding of cage hoop steel (102)
On the inner wall of stainless-steel pipe (101).
8. a kind of steel lining tetrafluoro cage hoop pipe-line equipment according to claim 6, which is characterized in that the pipe-line equipment main body
(1) outer wall two sides are welded with saddle (3).
9. a kind of steel lining tetrafluoro cage hoop pipe-line equipment according to claim 6, which is characterized in that the pipe-line equipment main body
(1) nameplate (4) are fixed with by screw in the middle part of outer wall.
10. a kind of steel lining tetrafluoro cage hoop pipe-line equipment according to claim 6, which is characterized in that the connecting flange (2)
Outer wall it is circumferentially equidistant from be equipped with mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811388122.7A CN109648768B (en) | 2018-11-21 | Steel lining tetrafluoro cage hoop and other steel compounding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811388122.7A CN109648768B (en) | 2018-11-21 | Steel lining tetrafluoro cage hoop and other steel compounding process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109648768A true CN109648768A (en) | 2019-04-19 |
| CN109648768B CN109648768B (en) | 2024-05-31 |
Family
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| CN110815683A (en) * | 2019-10-18 | 2020-02-21 | 温州大学 | PTFE composite grid plate |
| CN110884012A (en) * | 2019-11-28 | 2020-03-17 | 浙江特塑龙化工设备有限公司 | Die pressing grid plate manufacturing process |
| CN112893837A (en) * | 2021-01-20 | 2021-06-04 | 陈烈 | Method for manufacturing high-pressure-resistant and negative-pressure-resistant lining of composite steel mesh |
| CN114571649A (en) * | 2022-03-11 | 2022-06-03 | 北京玻钢院复合材料有限公司 | Rapid pressing method for integrally formed heat-proof product with large length-diameter ratio heat-proof layer and metal piece for aerospace vehicle and product thereof |
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