CN1022856C - Strong Composition spacer and its making method - Google Patents
Strong Composition spacer and its making method Download PDFInfo
- Publication number
- CN1022856C CN1022856C CN 91109500 CN91109500A CN1022856C CN 1022856 C CN1022856 C CN 1022856C CN 91109500 CN91109500 CN 91109500 CN 91109500 A CN91109500 A CN 91109500A CN 1022856 C CN1022856 C CN 1022856C
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- China
- Prior art keywords
- expanded graphite
- sheetmetal
- pad
- composition spacer
- strong composition
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- Expired - Fee Related
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Abstract
In the present invention, after a metal thin plate (base body) is compounded with expandable graphite with a physical method and a chemical method, a spacer blank is produced by one layer or a plurality of layers of high-strength plates through mechanically punching or shearing. The periphery of a sealing spacer is reinforced by a metal thin strip through a special machine to cause the sealing spacer to be used safely within 10MPa so as to overcome various defects caused by the material and the structure of the existing product, manufacturing technology has good operability, and composite cost is reduced.
Description
The present invention relates at various device, especially gasket seal that uses in the piping flange and manufacture method thereof.
In the past, be used for equipment, the gasket seal of piping flange has paper washer, cork pad, the rubber asbestos packing, plastic sealing gasket, metal cladding pad, metallic gasket, metal-nonmetal wound gasket etc., there is obvious defects in above-mentioned gasket seal not only material, and also there are many deficiencys in manufacture method: 1, with vegetable fiber, mineral fibre and chemical synthetic fiber are the gasket seal of raw material, because the restriction of material, tissue looseness, compactness is poor, form easily " infiltration leakage ", " infiltration leakage " often is difficult in time being found, brings harm for the normal safety in production of industrial and mining enterprise.Although 2, organic synthesis material such as rubber, plastics, asbestos rubber are that the gasket seal of raw material has been eliminated the infiltration leakage phenomenon, but because organic material is easily aging, be full of cracks, rottenly cause the production plastic deformation, spring-back force descends, and form " boundary leakage ", do not reach effective sealing, and only be applicable to lower pressure, in the non-aggressive medium.3, metal cladding pad, metallic gasket etc. are because relative material hardness height, and are can't Compensating flange face microcosmic uneven, therefore, must be bigger give tight power and require flanged surface that high degree of finish is arranged.And very sensitive to pressure surge between flanged surface, install and use the condition harshness, in case improper use very easily causes leakage.4, metal-nonmetal spirotallic gasket, be use at present more a kind of, but because the structure limitation: (a) need bigger impacting force, but as when pressure medium reaches 10.0MPa, flange and connecting bolt are out of shape.For this reason, the intensity that needs to increase bolt and flanged surface is eliminated this distortion, but this will consume a large amount of metallic material.(b) complicated the causing of manufacturing process operation costs an arm and a leg.(c) make the big specification pad of this kind, the scrappage height, success or not is at present in bigger contingency, because of manufacturing process itself also can't guarantee.(d) this kind pad transportation, keeping, installation conditions harshness, careless slightly, very easily cause and fall apart and scrap.
The purpose of this invention is to provide a kind of strong Composition spacer with comprehensive excellent sealability, and manufacture method, this pad have high strength, excellent rebound elasticity, high-low temperature resistant, corrosion-resistant, sealing is reliable, and transportation, keeping, easy for installation, long service life can adapt to the seal request of numerous operating modes.
The present invention is achieved in that with the expanded graphite to be raw material, and with the method for physics or chemistry, perhaps both and usefulness make expanded graphite be compounded in sheetmetal two surfaces, make expanded graphite-metal composite High-strength plate.Physical method can be deburred with sheet metal, opens methods such as aperture; Chemical method can be used in and apply a certain amount of compound in metal sheet surface or the expanded graphite layer, as organic Bond, inorganic binder or apply methods such as a certain amount of self-adhering-type ribbon, one or more of also available above-mentioned physical method or chemical method.One or more layers of above composite powerful sheet material is through mechanical stamping or with the pad blank of shaped features such as shearing machine.If need several layers, then can bond to the good Bond of expanded graphite intermiscibility, in the use to reach desired thickness with using between composite powerful sheet metal layer and the layer.Also can with between the pad blank layer that shapes and the layer with the Bond bonding to reach desired thickness.
The pad blank of above-mentioned definite shape feature is strengthened at the peripheral position of needs by metal sheet band; it is characterized in that method or both and usefulness with physics or chemistry; metal sheet band is very closely fitted in need on the edge of the periphery strengthened such as internal diameter circumference, external diameter circumference and parting bead; to protect whole pad; and play the effect that makes pad have high resilience energy feature, thereby make strong Composition spacer.
The technology of the present invention is compared with prior art, has the following advantages: (1) sealing pad is composited by sheetmetal and expanded graphite, has kept the expanded graphite high-low temperature resistant, and is corrosion-resistant, superior quality such as stress relaxation-resistant, and have high intensity.(2) strengthen with metal sheet band as internal diameter, outer radius etc. at periphery, expanded graphite is to work under flanged surface and the formed supporting mass state of contact of metal sheet band, therefore, expanded graphite not only can not transship and be extruded sealing surface, and has fabulous rebound elasticity.Above-mentioned 2 make pad have that sealing is reliable, the characteristics of long service life, and transportation installs, safeguards all extremely convenient, have avoided the spirotallic gasket damaged shortcoming of falling apart especially.(3) manufacturing process is easy to control, good operation performance, and constant product quality, pad cost of material and processing cost obviously descend.
Fig. 1 is a kind of form of strong Composition spacer of the present invention;
Fig. 2 is the another kind of form of strong Composition spacer of the present invention;
Fig. 3 is the sectional view along Figure 1A-A line.
Embodiment one
With granularity is that 200 orders-20 purpose natural flake graphite, pyrolytic graphite etc. form intercalation compound through chemical treatment or electrochemical treatments, make the expanded graphite that contains carbon fiber, glass fibre and high-low temperature resistant inorganic material through washing and heat treatment again, its density is 0.003-2.1 gram/cubic centimetre.With thickness is the copper of 0.10-0.50mm, iron, stainless steel, nickel alloy, a kind of elder generation of sheetmetal such as evanohm and galvanized iron sheet is through surface treatment (the not surface treatment in advance that has according to different metal compositions), processing should be carried out at normal temperature, primer is the Sodium Benzoate of concentration 1% to saturation concentration, phosphate etc., with special-purpose perforate machinery sheetmetal being opened aperture then handles, make carcass, general little hole count is a 4-36/square centimeter, be advisable between the carcass total thickness 0.1-5mm, carcass is handled through inhibition again, corrosion inhibitor is a Sodium Benzoate, phosphatic one or more, again expanded graphite 5 is placed 4 liang of surfaces of sheetmetal, method with the machinery pressurization, make expanded graphite very fine and close and be fitted in sheetmetal (carcass) 4 two sides very equably and make the composite powerful plate, its THICKNESS CONTROL is advisable at 0.5-5.0mm, and density is controlled at 1.0-5.0 gram/cubic centimetre and is advisable.Generally reach this purpose by the pressure of selecting different-thickness sheetmetal, expanded graphite inventory and machinery pressurization, institute's plus-pressure is between 10-21MPa.Mechanical mould with the respective shapes specification becomes powerful composite sheet punching out with the corresponding pad blank of required specification again.Also can shear processing and obtain corresponding pad blank, the pad blank can be carried out binder-treatment with Bonds such as the fine latexes of fourth as required, in the thickness direction stack, to reach certain desired thickness with shearing machine.Later on by special-purpose lamination machinery, the internal diameters, external diameter etc. that metal sheet bands such as your alloy of iron, copper, galvanized iron, stainless steel, English section nickel, monel metal a kind of are fitted in the pad blank need the periphery strengthened, form inner stiffener ring 1, outer stiffening ring 2, stiffened edge 3, metal sheet band thickness is 0.05-0.5mm.So just finished whole manufacturing process.
Embodiment two
Get the expanded graphite that made, be sheetmetal such as copper, iron, stainless steel, galvanized iron sheet, nickel alloy, evanohm a kind of of 1.0-6.0mm with thickness, external coating or spraying, or dip-coating organic binder or inorganic binder such as chloro-butyric glue etc., after 1 second-40 minutes, expanded graphite is placed the sheetmetal two sides, through machinery pressurization, 1 second-1 hour dwell time, make the expanded graphite densification and very be fitted in the sheetmetal both sides equably, make the powerful composite sheet of expanded graphite-metal.
Embodiment three
Get the expanded graphite that has made.With thickness is the copper of 0.1-5.0mm, iron, stainless steel, galvanized iron sheet, nickel alloy, sheetmetals such as evanohm any, open aperture or deburr processing by special mechanical equipment, little hole count or burr number are 4-20/square centimeter, apply adhesive treatment then, available brushing, spraying, dip-coating organic binder or inorganic binder, as chloro-butyric glue etc., after 1 second-40 minutes, expanded graphite is placed sheetmetal two surfaces, pressurize through machinery, 1 second-1 hour dwell time, pressure 10-20MPa, make expanded graphite very be fitted in sheetmetal two surfaces densely, making thickness is 1.5mm, and density is the powerful composite sheet of the expanded graphite-metal of 2.0 gram/cubic centimetres.
Embodiment four
Get and make the pad blank, locate to apply a certain amount of Bond at periphery such as internal diameter, external diameter etc. that needs are strengthened, resin added is advisable not trickle, its method is the cylinder by a pair of band Bond, also can be with spraying, the method for brushing.Also Bond can be added on this side of the metal sheet band of fitting with the pad blank.Through moment or a period of time, the internal diameter, external diameter periphery etc. that any of metal sheet bands such as your alloy of stainless steel, English section nickel, monel metal are fitted in the pad blank by the special-purpose lamination machinery of trough of belt need add the strength, promptly make the gasket seal of powerful high resilience.
Claims (4)
1, a kind of strong Composition spacer comprises inner stiffener ring 1 and outer stiffening ring 2, and sheetmetal 4, expanded graphite layer 5 is characterized in that described expanded graphite layer contains carbon fiber, glass fibre, and this expanded graphite density is 0.003～2.1g/cm
3And also has stiffened edge 3.
2, strong Composition spacer as claimed in claim 1 is characterized in that the metal sheet band of sheetmetal and inside and outside stiffening ring, is your alloy sheets of general steel plate, galvanized iron sheet, corrosion resistant plate, monel metal plate, English section nickel.
3, strong Composition spacer as claimed in claim 1, the material that it is characterized in that making pad is the formed powerful composite sheet of expanded graphite and sheetmetal, and its thickness is 0.5～5.0mm, and density is 1.0～5.0g/cm
3
4, a kind of manufacture method of strong Composition spacer, it is characterized in that aperture or plucking thorn is opened on sheetmetal two surfaces after, with the composite expanded graphite layer of mechanical pressing mode, strike out pad more thereon, the pad periphery overlays metal sheet band and is strengthened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91109500 CN1022856C (en) | 1991-10-12 | 1991-10-12 | Strong Composition spacer and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91109500 CN1022856C (en) | 1991-10-12 | 1991-10-12 | Strong Composition spacer and its making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1060900A CN1060900A (en) | 1992-05-06 |
| CN1022856C true CN1022856C (en) | 1993-11-24 |
Family
ID=4909867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91109500 Expired - Fee Related CN1022856C (en) | 1991-10-12 | 1991-10-12 | Strong Composition spacer and its making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1022856C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279217A (en) * | 2014-09-30 | 2015-01-14 | 无锡市新颖密封材料厂 | Expanded graphite composite reinforcement gasket |
-
1991
- 1991-10-12 CN CN 91109500 patent/CN1022856C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1060900A (en) | 1992-05-06 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |