CN101251189A - Netted metallic reinforced sealing plate and producing method thereof - Google Patents
Netted metallic reinforced sealing plate and producing method thereof Download PDFInfo
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- CN101251189A CN101251189A CNA2007101648045A CN200710164804A CN101251189A CN 101251189 A CN101251189 A CN 101251189A CN A2007101648045 A CNA2007101648045 A CN A2007101648045A CN 200710164804 A CN200710164804 A CN 200710164804A CN 101251189 A CN101251189 A CN 101251189A
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Abstract
The invention discloses a networked metal reinforcement closing plate and a manufacturing method thereof, wherein the networked metal reinforcement closing plate comprises an upper and a lower graphite layers and a middle metallic layer; the networked metal reinforcement closing plate is characterized in that the upper and the lower graphite layers are formed by flexible graphite, and the middle metallic layer is formed by a zigzag web plate; each of the upper and the lower graphite layers is divided into two layers according to the different density, upper and lower surfaces of the zigzag web plate are covered by the high density flexible graphite, the upper and the lower outer surfaces of which are covered by the low density flexible graphite. The manufacturing method is as follows: a metal flat plate, the thickness of which is 0.1 to 0.4mm, is punched with meshes and is made into the zigzag web plate; the high density flexible graphite and the low density flexible graphite are combined by bonding; the combined graphite layer and the zigzag web plate are combined by bonding, and then after processes of the roll extrusion, the cutting, the cleaning and the packaging, the networked metal reinforcement closing plate is shaped in the end. The networked metal reinforcement closing plate has the advantages of excellent adaptability, good sealing performance, high processing efficiency and good product quality.
Description
Technical field
The present invention relates to a kind of sealing material and production method thereof, be specifically related to the netted metallic reinforced sealing plate and the production method thereof at a kind of piping flange that is used for industries such as oil, chemical industry, electric power, metallurgy, valve case lid, pump equal pressure container static seal position.
Background technique
Referring to the patent No. 93118501.7, name is called the reinforced gasket material of describing in " a kind of super low sulfur graphite and metal composite reinforced gasket material and method for making thereof ", it is the spurt reinforcing material, the metal plate structure that is used to strengthen is the metal otter board of double-sided belt burr, gap between its inner thorn and the thorn is easy to generate leakage way, thereby infiltration leakage takes place.And the graphite paper density of using in the spurt reinforcing material is even, and is relatively poor relatively to the adaptability of flanged surface, thereby produce leakage way, interface takes place leak, and sealability is good inadequately.
Summary of the invention
Technical problem to be solved by this invention is to overcome deficiency of the prior art, and provides a kind of interface to be difficult for the netted metallic reinforced sealing plate and the production method thereof of leakage, favorable sealing property.
The technological scheme that the present invention solves the problems of the technologies described above employing is: this netted metallic reinforced sealing plate comprises graphite layer and metal intermediate layer up and down, its structural feature is: described graphite layer up and down is an Expanded graphite, metal intermediate layer is the zigzag fashion web plate, graphite layer respectively is divided into two-layer by the density difference for every layer in addition up and down, zigzag fashion web plate upper and lower surface is coated with high density flexible graphite, and high density flexible graphite outer surface up and down is coated with the low density Expanded graphite.
Zigzag fashion web plate material of the present invention is stainless steel, galvanized iron, titanium, nickel or monel alloy.
Zigzag fashion web plate thickness of the present invention is 0.3mm～0.8mm, and web plate is provided with the mesh of 1mm * 2mm～3mm * 4mm, and mesh is shaped as quadrilateral or polygonal.
Graphite layer up and down of the present invention is that impregnating agent is a kind of or mixture in PTFE, paraffin, microcrystalline wax, the graphite oil through the Expanded graphite of dipping, and the thickness of every layer of graphite layer is 0.2mm～5.0mm.
Netted metallic reinforced sealing plate surface-coated of the present invention has antitack agent, and described antitack agent is silicone based antitack agent or antiadhesion barrier.
High density flexible graphite density of the present invention is 1.0～1.4g/cm
3
Low density Expanded graphite density of the present invention is 0.5-0.9g/cm
3
The production method of this netted metallic reinforced sealing plate, its characteristics are may further comprise the steps: be punching press mesh on the metal plate of 0.1～0.4mm at thickness, make the zigzag fashion web plate; Paste high density flexible graphite and low density Expanded graphite compound; Then composite graphite layer and zigzag fashion web plate are pasted compoundly, passed through roll extrusion, cutting, arrangement successively after compound, pack moulding at last.
High density flexible graphite of the present invention can flood through impregnating agent earlier before compound with the low density Expanded graphite.
The employed alite paste of stickup compound tense of the present invention is no chlorine glue.
The present invention compared with prior art has following beneficial effect: 1, adopt zigzag fashion mesh-structured, can better prevent the generation of infiltration leakage.2, inner highdensity graphite cake can guarantee the sealability of product, prevents infiltration leakage, and outside low density graphite layer is guaranteed the conformability that pad is outstanding to seal fitting, prevents that interface from leaking.3, adopt inner impregnation process can play the effect of sealing graphite pore effectively, further prevent the generation of infiltration leakage.4, adopt the three-dimensional mesh of high-accuracy web plate perforating press machine shaping to strengthen sealing effect, adopt the different graphite composite structure of density to guarantee the conformability that pad is outstanding, adopt inner impregnation process to play the effect of sealing graphite pore, show that in the graphite layer outside coated with high temperature antitack agent prevents that pad from adhering to flange, the work efficiency height, good product quality.
Description of drawings
Fig. 1 is a structural representation sectional view of the present invention.
Fig. 2 is zigzag fashion panel structure signal enlarged view of the present invention.
Fig. 3 is a process flow diagram of the present invention.
Embodiment
Embodiment 1:
Referring to Fig. 1, Fig. 2, the present invention includes two-layer graphite layer 1 and zigzag fashion web plate 2 up and down, described zigzag fashion web plate 2 adopts the galvanized iron material, thick 0.8mm, zigzag fashion web plate 2 is provided with quadrilateral mesh 3, and described mesh L segment length is 4mm, and the H segment length is 3mm, be evenly distributed on the zigzag fashion web plate 2, back gauge D is 0.5-1mm between each quadrilateral mesh 3.Described graphite layer 1 thick 5.0mm adopts the Expanded graphite that adds antioxidant, and described antioxidant is a phosphorus, content is 800～1800PPm, Kohlenstoffgehalt reaches more than 99.5%, and it at high temperature can reduce ignition loss and improve heat-conducting property, and Expanded graphite has good anti-corrosion simultaneously.Described two-layer graphite layer 1 up and down respectively is divided into two-layer again by the density difference, the zigzag fashion web plate pastes high density flexible impregnated graphite paper 1-1 in two surfaces about in the of 2, and density is 1.0g/cm
3High density flexible impregnated graphite paper 1-1 outer surface up and down is covered with the flexible impregnated graphite paper of low density 1-2, and density is 0.5g/cm
3Whole netted metallic reinforced sealing plate surface-coated has the high temperature antitack agent, and this antitack agent is a paper release silicone, is used to prevent that metal reinforcing plate from high temperature using the trouble that sticks to flange surface and cause replacing.
Embodiment 2:
Referring to Fig. 1, Fig. 2, the present invention includes two-layer graphite layer 1 and zigzag fashion web plate 2 up and down, described zigzag fashion web plate 2 adopts stainless steel material, thick 0.5mm, zigzag fashion web plate 2 is provided with quadrilateral mesh 3, and described mesh L segment length is 3mm, and the H segment length is 2mm, be evenly distributed on the zigzag fashion web plate 2, back gauge D is 0.5-1mm between each quadrilateral mesh 3.Described graphite layer 1 thick 2mm adopts the Expanded graphite that adds antioxidant, and described antioxidant is a phosphorus, content is 800～1800PPm, Kohlenstoffgehalt reaches more than 99.5%, and it at high temperature can reduce ignition loss and improve heat-conducting property, and Expanded graphite has good anti-corrosion simultaneously.Described two-layer graphite layer 1 up and down respectively is divided into two-layer again by the density difference, the zigzag fashion web plate pastes high density flexible impregnated graphite paper 1-1 in two surfaces about in the of 2, and density is 1.3g/cm
3High density flexible impregnated graphite paper 1-1 two surfaces up and down is covered with the flexible impregnated graphite paper of low density 1-2, and density is 0.7g/cm
3Whole netted metallic reinforced sealing plate surface-coated has the high temperature antitack agent, and this antitack agent is the anti-adhesive silicone film, is used to prevent that metal reinforcing plate from high temperature using the trouble that sticks to flange surface and cause replacing.
Embodiment 3:
Referring to Fig. 1, Fig. 2, the present invention includes two-layer graphite layer 1 and zigzag fashion web plate 2 up and down, described zigzag fashion web plate 2 adopts titanium or nickel or monel alloy material, thick 0.3mm, zigzag fashion web plate 2 is provided with quadrilateral mesh 3, and described mesh L segment length is 2mm, and the H segment length is 1mm, be evenly distributed on the zigzag fashion web plate 2, back gauge D is 0.5-1mm between each quadrilateral mesh 3.Described graphite layer 1 thick 0.2mm adopts the Expanded graphite that adds antioxidant, and described antioxidant is a phosphorus, content is 800～1800PPm, Kohlenstoffgehalt reaches more than 99.5%, and it at high temperature can reduce ignition loss and improve heat-conducting property, and Expanded graphite has good anti-corrosion simultaneously.Described two-layer graphite layer 1 up and down respectively is divided into two-layer again by the density difference, the zigzag fashion web plate pastes high density flexible impregnated graphite paper 1-1 in two surfaces about in the of 2, and density is 1.4g/cm
3High density flexible impregnated graphite paper 1-1 two surfaces up and down is covered with the flexible impregnated graphite paper of low density 1-2, and density is 0.9g/cm
3Whole netted metallic reinforced sealing plate surface-coated has the high temperature antitack agent, and this antitack agent is a paper release silicone, is used to prevent that metal reinforcing plate from high temperature using the trouble that sticks to flange surface and cause replacing.
Conventional in the past metal spurt plate uses in product, between its inner punching and the punching, do not have to stop the metal of medium generation infiltration leakage, thereby internal leakage is serious, so web plate structure choice sawtooth pattern web plate among the present invention.
Conventional Expanded graphite is that scale graphite becomes the worm material through high temperature puffing, a kind of nonmetallic material that roll extrusion is made, because the particularity of its material self character and preparation process, so its inside is a kind of loose structure, causes leakage easily after making pad.In order to solve the defective of above-mentioned conventional graphite, the present invention adopts the inner impregnation process of graphite, plays the impermeable effect of good sealing.Under vacuum condition, graphite material is placed in the polytetrafluoroethylene (PTFE) emulsion, place 5-10 and divide clock time, the polytetrafluoroethylene (PTFE) emulsion is penetrated in the graphite material, fill up the graphite material internal voids, polytetrafluoroethylene (PTFE) emulsion reserves are 5%～8% of graphite material weight in the graphite material behind the dipping.Other can also use one or more mixtures in paraffin, microcrystalline wax, the graphite oil as impregnating agent.
Adopt the graphite paper of different densities among the present invention, be in order to make this invention have wider Applicable scope, because can run into vessel flange that some has damaged or old in actual use, and graphite is a flexible material, be to be easy to replenish its damaging part, after but graphite density is low, the sealability of product can reduce, thereby improve sealability if improve graphite density, then to damage and the adaptation filling capacity of old vessel flange sealing surface poor, consider the phenomenon of above-mentioned contradiction, the graphite paper of different densities inside and outside the present invention adopts, the highdensity graphite of internal layer can ensure sealing, and outside low-density graphite is guaranteed the conformability that product is outstanding.
The present invention and traditional like product performance are compared as follows: product of the present invention is called for short " reticular lamina enhancing ", and traditional product is called for short " spurt strengthens ":
| Project | Desired value | ||
| Reticular lamina strengthens | Spurt strengthens | ||
| Density variation g/cm 3 | 1.35±0.15 | 1.6±0.15 | |
| Kohlenstoffgehalt % | ＞99 | ＞99 | |
| Sulpher content PPm | ＜1000 | ＜1200 | |
| Compressibility % | ≥40 | 15～35 | |
| Rebound degree % | ≥15 | ≥20 | |
| The weightless % of heatproof | 450℃ | ≤1.0 | ≤1.0 |
| 600℃ | ≤10 | ≤10 | |
| Oil absorbency | Gasoline | ≤20 | ≤20 |
| Diesel oil | ≤20 | ≤20 | |
| Machine oil | ≤20 | ≤20 | |
| Leak-down rate sm | ≤1×10 -4 | ≤1×10 -3 | |
Flow of the present invention is as follows:
Referring to Fig. 3, on the stainless steel of thick 0.1～0.4mm or galvanized iron, titanium, nickel or monel alloy material metal flat board, adopt high-accuracy web plate perforating press punching press mesh, make the zigzag fashion web plate that is densely covered with the quadrilateral mesh, thick 0.3～the 0.8mm of zigzag fashion web plate, quadrilateral mesh L segment length is 2～4mm, the H segment length is 1～3mm, and back gauge D is 0.5-1mm between each quadrilateral mesh.Under vacuum condition, the flexible graphite material of different densities is placed in the impregnating agent, impregnating agent is polytetrafluoroethylene (PTFE) emulsion or paraffin solution or microcrystalline wax solution or graphite oil or above several mixture, place 5-10 and divide clock time, impregnating agent is penetrated in the graphite material, fill up the graphite material internal voids, the maceration extract reserves are 5%～8% of graphite material weight in the graphite material behind the dipping.Then, with high density flexible impregnated graphite (density 1.0～1.4g/cm
3) and the flexible impregnated graphite (0.5-0.9g/cm of low density
3) paste compound, used alite paste is then pasted compound good graphite layer and zigzag fashion web plate compound for no chlorine glue, used alite paste is no chlorine glue, is followed successively by the flexible impregnated graphite layer of low density, high density flexible impregnated graphite layer, zigzag fashion web plate, high density flexible impregnated graphite layer, the flexible impregnated graphite layer of low density on the net-shaped metal plate cross section of this moment from top to bottom.Net-shaped metal plate after compound is through roll extrusion, the cutting of common process, and in the arrangement process on the net-shaped metal plate surface-coated antitack agent, described antitack agent is paper release silicone or antiadhesion barrier, packs moulding at last.
Claims (10)
1, a kind of netted metallic reinforced sealing plate, comprise graphite layer and metal intermediate layer up and down, it is characterized in that: described graphite layer up and down is an Expanded graphite, metal intermediate layer is the zigzag fashion web plate, graphite layer respectively is divided into two-layer by the density difference for every layer in addition up and down, zigzag fashion web plate upper and lower surface is coated with high density flexible graphite, and high density flexible graphite outer surface up and down is coated with the low density Expanded graphite.
2, netted metallic reinforced sealing plate according to claim 1 is characterized in that: described zigzag fashion web plate material is stainless steel, galvanized iron, titanium, nickel or monel alloy.
3, netted metallic reinforced sealing plate according to claim 1 and 2 is characterized in that: described zigzag fashion web plate thickness is 0.3mm～0.8mm, and web plate is provided with the mesh of 1mm * 2mm～3mm * 4mm, and mesh is shaped as quadrilateral or polygonal.
4, netted metallic reinforced sealing plate according to claim 1, it is characterized in that: described graphite layer up and down is the Expanded graphite through dipping, impregnating agent is a kind of or mixture in polytetrafluoroethylene (PTFE) emulsion, paraffin, microcrystalline wax, the graphite oil, and the thickness of every layer of graphite layer is 0.2mm～5.0mm.
5, netted metallic reinforced sealing plate according to claim 1 is characterized in that: described netted metallic reinforced sealing plate surface-coated has antitack agent, and described antitack agent is silicone based antitack agent or antiadhesion barrier.
6, netted metallic reinforced sealing plate according to claim 1 is characterized in that: described high density flexible graphite density is 1.0～1.4g/cm
3,
7, netted metallic reinforced sealing plate according to claim 1 is characterized in that: described low density Expanded graphite density is 0.5～0.9g/cm
3
8, a kind of production method of netted metallic reinforced sealing plate is characterized in that may further comprise the steps: be punching press mesh on the metal plate of 0.1～0.4mm at thickness, make the zigzag fashion web plate; Paste high density flexible graphite and low density Expanded graphite compound; Then composite graphite layer and zigzag fashion web plate are pasted compoundly, passed through roll extrusion, cutting, arrangement successively after compound, pack moulding at last.
9, the production method of netted metallic reinforced sealing plate according to claim 8 is characterized in that: flood through impregnating agent earlier before described high density flexible graphite and low density Expanded graphite are compound.
10, the production method of netted metallic reinforced sealing plate according to claim 8 is characterized in that: the alite paste that described stickup compound tense uses is no chlorine glue.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101648045A CN100549474C (en) | 2007-12-21 | 2007-12-21 | Netted metallic reinforced sealing plate and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101648045A CN100549474C (en) | 2007-12-21 | 2007-12-21 | Netted metallic reinforced sealing plate and production method thereof |
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| CN101251189A true CN101251189A (en) | 2008-08-27 |
| CN100549474C CN100549474C (en) | 2009-10-14 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636028A (en) * | 2012-05-17 | 2012-08-15 | 安徽马钢工程技术有限公司 | Sintering machine trolley with elastic sealing strip |
| CN105276192A (en) * | 2014-10-16 | 2016-01-27 | 侯玉杰 | Manufacturing method for carbon-graphite floating ring |
| CN107420373A (en) * | 2017-09-03 | 2017-12-01 | 宁波东湖液压传动有限公司 | The piston rod of sealed reliable |
| CN108515742A (en) * | 2018-03-13 | 2018-09-11 | 岱山县威尔密封件有限公司 | A kind of silencer gasket seal and preparation method thereof |
| CN109899519A (en) * | 2019-04-18 | 2019-06-18 | 常熟理工学院 | A kind of bilayer ripple graphite Composition spacer |
| CN111398001A (en) * | 2020-04-01 | 2020-07-10 | 中国船舶重工集团公司第七二五研究所 | Method for preparing corrosion pit on metal material sample |
| CN111720542A (en) * | 2020-06-01 | 2020-09-29 | 无锡宝亿沣密封材料有限公司 | Forming process method of metal graphite symbiotic high-temperature fluid sealing element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510219A (en) * | 1983-11-14 | 1985-04-09 | California Institute Of Technology | Battery plate containing filler with conductive coating |
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2007
- 2007-12-21 CN CNB2007101648045A patent/CN100549474C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636028A (en) * | 2012-05-17 | 2012-08-15 | 安徽马钢工程技术有限公司 | Sintering machine trolley with elastic sealing strip |
| CN102636028B (en) * | 2012-05-17 | 2014-10-15 | 安徽马钢工程技术集团有限公司 | Sintering machine trolley with elastic sealing strip |
| CN105276192A (en) * | 2014-10-16 | 2016-01-27 | 侯玉杰 | Manufacturing method for carbon-graphite floating ring |
| CN107420373A (en) * | 2017-09-03 | 2017-12-01 | 宁波东湖液压传动有限公司 | The piston rod of sealed reliable |
| CN108515742A (en) * | 2018-03-13 | 2018-09-11 | 岱山县威尔密封件有限公司 | A kind of silencer gasket seal and preparation method thereof |
| CN109899519A (en) * | 2019-04-18 | 2019-06-18 | 常熟理工学院 | A kind of bilayer ripple graphite Composition spacer |
| CN111398001A (en) * | 2020-04-01 | 2020-07-10 | 中国船舶重工集团公司第七二五研究所 | Method for preparing corrosion pit on metal material sample |
| CN111720542A (en) * | 2020-06-01 | 2020-09-29 | 无锡宝亿沣密封材料有限公司 | Forming process method of metal graphite symbiotic high-temperature fluid sealing element |
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| Publication number | Publication date |
|---|---|
| CN100549474C (en) | 2009-10-14 |
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Effective date of registration: 20170309 Address after: 311255 Hangzhou Town, Xiaoshan District, Zhejiang, Pu Yang Town, Taoyuan Patentee after: Zhejiang Guotai Xiao Xing sealing material Limited by Share Ltd Address before: 311255 Zhejiang City, Xiaoshan Province, the town of Zhejiang Yang Tai seal materials Limited by Share Ltd Patentee before: Guotai Seal Material Co., Ltd., Zhejiang Prov. |
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