CN1076468A - Graphite-metal base composite sealing material and manufacture craft - Google Patents
Graphite-metal base composite sealing material and manufacture craft Download PDFInfo
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- CN1076468A CN1076468A CN 92106433 CN92106433A CN1076468A CN 1076468 A CN1076468 A CN 1076468A CN 92106433 CN92106433 CN 92106433 CN 92106433 A CN92106433 A CN 92106433A CN 1076468 A CN1076468 A CN 1076468A
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Abstract
The present invention relates to a kind of is the sealing material of matrix manufacturing and the manufacture method of sealing material with graphite, metal.It is made up of metal, graphite and caking agent.Said metal is the shred non-ferrous metal, as lead, copper, aluminium etc.; Graphite is the shred soft graphite; Caking agent can be organic bonding glue such as FFD-202 resol etc., also can be other glue classes.Its manufacturing process is that metal, graphite and caking agent three mixed in accordance with regulations is even, is placed on compression moulding in the mould then.In order to strengthen its intensity, the sealing material of compression moulding can also be put into high temperature and be heating and curing.This material can be used for sealings such as valve rod, pump shaft.
Description
The invention belongs to a kind of is the sealing material of matrix manufacturing and the manufacture method of sealing material with the graphite-metal.
At present, valve, the selected material filling type sealing material of pump mainly are asbestos packings, promptly twining asbestos packing on the valve rod of valve or in the rotating shaft of the pump housing, with gland it are compressed then, to guarantee the sealing between body and the rotating shaft.For asbestos packing, because self-lubricating ability, the pressure compensation performance of itself is all poor, and its sealing property is subjected to the influence of operator's state of the art bigger, is difficult to reach long excellent sealing.In addition, the lock packing that people utilize the soft graphite paper to make, this lock packing has advantages such as wide, wear-resisting, the self-lubricity of temperature limit is good, the processing installation is simple and reliable, aging, but the pressure compensation ability of this material still is poor, particularly high to the susceptibility of hard point, be torn easily, the part that is torn usually causes leakage owing to can not produce compensation by depended on pressure.People have made the hard packing sealing with inelastic bodies such as metal, graphite in addition, i.e. split-type flat seal ring.Because the self-lubricating ability of pure metal is poor, the strength ratio of graphite is lower, and people generally make split-type flat seal ring with the graphite impregnation metal, because the graphite in this material of graphite impregnation metal and the skewness of metal, so use also undesirable.
The objective of the invention is in order to overcome above-mentioned deficiency, and a kind of good seal performance of invention, wear-resistant, manufacturing process simple, have the self-lubricating ability and have the manufacture method of the graphite-metal base composite sealing material and the sealing material thereof of certain pressure compensation ability.
The present invention is achieved in that it is made up of graphite, metal and caking agent, and promptly metal and graphite bond together through caking agent, and then with mould it are pressed into needed different shape.The said metal of the present invention is a non-ferrous metal, as lead, copper, aluminium, Babbitt metal, nickel etc., its metal be shaped as shred, be about to used non-ferrous metal and be processed into thin paper (plate) by fusing cast or additive method, be processed into metal fragment then.Graphite of the present invention is the shred soft graphite, promptly is processed into the soft graphite fragment by flexible graphite paper (plate) or other forms of flexible graphite article.Said caking agent can be organic adhesive such as FFD-202 phenolic resin, nylon 202 seal gums, F-4 tetrafluoroethylene etc., also can be other bonded adhesives classes that non-ferrous metal fragment and soft graphite fragment had certain cementability.Bonded adhesives is as coupling agent, its objective is non-ferrous metal fragment and soft graphite fragment are organically bonded together, preferably the outside surface with the non-ferrous metal fragment sticks the soft graphite fragment, then with the mixture die forming of non-ferrous metal fragment and soft graphite fragment, as sealing material use.Also can further the sealing material of die forming be put into high temperature, make non-ferrous metal fragment weldering connection form metallic framework,, make split-type flat seal ring as the hard lock packing and use to improve the intensity and the hardness of product.
This sealing material of the present invention, its soft graphite fragment are mainly as lubricant and rebound resilience weighting agent preferably.The non-ferrous metal fragment mainly plays skeleton function, and it has improved the associativity between graphite, the continuity that keeps graphite, reinforcement integral intensity and has improved the damage of tearing that surperficial tear resistance reduces graphite.Therefore soft graphite fragment, non-ferrous metal fragment and caking agent three's ratio of mixture is decided according to the operating mode of practical application.Can be greatly as the proportion of soft sealed packing soft graphite, and make the hard lock packing, the content of its non-ferrous metal fragment is big.Optimum proportion (volume ratio) between soft graphite fragment, non-ferrous metal fragment and the caking agent three is (5～65): (30～90): (5～20).
The size of the said soft graphite fragment of the present invention and the size of non-ferrous metal fragment also are to decide according to the employed operating mode of sealing material.When making less sealing member, it is more broken that its non-ferrous metal fragment and soft graphite fragment can be processed, and when making bigger sealing member, non-ferrous metal fragment and soft graphite fragment can be relative more greatly.The size of its non-ferrous metal fragment and soft graphite fragment preferably is controlled at thickness 0.1～1mm, surface-area 0.25～10mm
2Scope in.
The manufacture craft of graphite-metal base composite sealing material of the present invention is: earlier used non-ferrous metal and soft graphite are processed into shred.The working method of its non-ferrous metal fragment is: used non-ferrous metal melting and pouring can be become thin paper (plate) or be processed into thin paper (plate) shape by the method for suppressing, be processed into fragment then, also can non-ferrous metal be processed into fragment with additive method; The soft graphite fragment can be processed with flexible graphite paper, also can process with other flexible graphite articles.With the non-ferrous metal fragment, soft graphite fragment and the caking agent three that process ratio preparation in accordance with regulations, to be mixedly put into mould compression moulding after evenly.In order to guarantee that the soft graphite fragment can bond on the non-ferrous metal fragment equably, when preparation sealing material, earlier non-ferrous metal fragment and caking agent are mixed, to be mixedly add the soft graphite fragment again after evenly and further mix, the purpose of doing like this is to stick the soft graphite fragment equably for the surface with the non-ferrous metal fragment.When compression molding, also can guarantee soft graphite and the non-ferrous metal homogeneity in the sealing material, also can prevent bonding between the graphite scrap or between the metal fragment effectively.For the mixture that prevents non-ferrous metal fragment, soft graphite fragment and caking agent three sticking to mould tool when the compression molding, treat to put into after non-ferrous metal fragment, soft graphite fragment and caking agent three mix baking oven and toast or be placed on cool solarization the under the normal temperature, put into mould compression moulding at last again.If this mixture is placed in the baking oven toasts, generally put it into to toast in 50～70 ℃ the baking oven and got final product in 5～30 minutes.If three's mixture is placed under the normal temperature dries, airing got final product about 24 hours.
This graphite-metal base composite sealing material is heating further, be used for manufacturing the hard lock packing, its manufacture craft is: after will the mixture compression molding by non-ferrous metal fragment, soft graphite fragment and caking agent, can dry earlier, its bake out temperature preferably is controlled at 250～280 ℃, storing time is 20～30 minutes, and then put in the temperature environment that is higher than the matrix metal fusing point and heat more than 2 minutes, also can directly put in the temperature environment that is higher than the matrix metal fusing point and heat more than 2 minutes.Putting into the purpose that heats in the temperature environment that is higher than the matrix metal fusing point is to make non-ferrous metal fragment partial melting.Metal by melt portions gets up weldering connection between metal fragment and the metal fragment, and integrant metallic framework is to increase the intensity and the hardness of sealing material.In order to guarantee molten between its non-ferrous metal fragment, the temperature that adds thermofussion welding preferably is controlled at 20～30 ℃ of fusing points that are higher than matrix metal, is controlled at heat-up time 2～10 minutes.The Heating temperature height, can shorten heat-up time, and the temperature of heating is low, then can prolong heat-up time, is as the criterion to guarantee that weldering combines as a whole between the metal fragment.In order to prevent sealing material heating after strain, after the heating of sealing material, put into further shaping of mould, to guarantee its service precision.
Because this graphite-metal base composite sealing material is to be mixed after the laminate structure of compression molding by non-ferrous metal fragment, soft graphite fragment and caking agent, it has not only kept self-lubricating property well and rebound resilience that graphite itself has, and has under pressure a slip property of generation between layer and the layer, has pressure compensation well when making this sealing material as soft packing seal, can play sealing effectiveness well, particularly be used on the lower valve of working accuracy, can reach sealing effectiveness well equally, prevent the leakage of valve effectively.What this sealing material mainly adopted is that bonding method with compression molding is made, simple, the easy row of manufacturing process.For making the hard lock packing, by the connection of the weldering between the non-ferrous metal fragment, both can guarantee its intensity, have self-lubricating property well again, under the prerequisite that guarantees its sealing, can reduce wear again like this, prolong the work-ing life of its hard filler.
Embodiment one:
Produce thick 0.2mm, surface-area 0.25～10mm
2Plumbous fragment 30cm
3Produce thick 0.4mm, the soft graphite fragment 60cm of surface-area 0.25～10mm
3; Get 10cm again
3Nylon 202 seal gums.Earlier nylon 202 seal gums and plumbous fragment are placed on mix in the container after, adding soft graphite again proceeds to mix, after their threes' mixture all mixed, be placed in 60 ℃ the baking oven baking 10 minutes, take out a part and be placed in the ring mould, under the pressure of 100MPa, be pressed into grommet type seals.Put it into during use in the sealing groove of valve or pump and compress with gland.Because sealing ring inside is layered distribution, the effect lower floor of pressure with layer between slip property is well arranged, then can guarantee closely to contact between sealing-ring and valve rod or the pump shaft, so just can guarantee the sealing of its valve or pump, prevent its leakage.When lock packing and valve rod or the wearing and tearing of pump shaft contact part are big,, can guarantee that then its sealing circle contacts with the tight of valve rod or pump shaft, guarantees its sealing property as long as further screw gland.
Embodiment two:
Produce thick 0.8mm, surface-area 0.25～10mm
2Babbitt metal 80cm
3; Produce thick 0.2mm, surface-area 0.25～10mm
2Soft graphite 15cm
3; Get nylon-202 seal gum 5cm
3Earlier the Babbitt metal fragment is mixed with nylon-202 seal gum, even back to be mixed adds the soft graphite fragment, and proceed to mix, to be mixed putting into after evenly in 50 ℃ the baking oven toasted 5～8 minutes, took out the partial confounding compound and put into mould be pressed into hard filler level sealing member under the pressure of 100MPa.The sealing member of die forming is further dried, in 250～280 ℃ temperature range, toast and got final product in 20～30 minutes.Take out further shaping of back, the process furnace of putting into 340 ℃ then heated 5 minutes, took out further shaping of back from stove, then can produce the hard packing sealing member.
Claims (9)
1, graphite--metal base composite sealing material is made up of graphite, metal and caking agent, it is characterized in that: said graphite is the sheet soft graphite, and metal is the sheet non-ferrous metal.
2, graphite-metal base composite sealing material according to claim 1 is characterized in that: the non-ferrous metal fragment: soft graphite fragment and bonded adhesives three's ratio (volume) is (30～90): (5～65): (5～20)
3, graphite-metal base composite sealing material according to claim 1 and 2 is characterized in that: the thickness of non-ferrous metal and soft graphite fragment is 0.1～1mm, and surface-area is 0.25～10mm
2
4, the manufacture craft of graphite-metal base composite sealing material according to claim 1, it is characterized in that: at first soft graphite and non-ferrous metal are processed into sheet, then that non-ferrous metal fragment, soft graphite fragment and caking agent mixed in accordance with regulations is even, put into mould compression moulding at last.
5, the manufacture craft of graphite-metal base composite sealing material according to claim 4 is characterized in that: after non-ferrous metal fragment and caking agent are mixed, add the soft graphite fragment of specified amount again, it is mixed.
6, according to the manufacture craft of claim 4 or 5 described graphite-metal base composite sealing materials, it is characterized in that: after soft graphite fragment, non-ferrous metal fragment and caking agent three are mixed, after putting into baking oven oven dry or natural airing, put into mould compression moulding.
7, the manufacture craft of graphite-metal base composite sealing material according to claim 6 is characterized in that: the sealing member in mould after the compression moulding is put into 250～280 ℃ temperature range and was toasted 20～30 minutes.
8, the manufacture craft of graphite-metal base composite sealing material according to claim 4, it is characterized in that: after non-ferrous metal fragment, caking agent and soft graphite fragment mixing compression moulding, put into the temperature environment that is higher than matrix non-ferrous metal fusing point, heating is more than 2 minutes.
9, the manufacture craft of graphite-metal base composite sealing material according to claim 7, it is characterized in that: after non-ferrous metal fragment caking agent and soft graphite fragment mixing compression moulding, put into the temperature range that is higher than 20～30 ℃ of matrix non-ferrous metal fusing points, heated 2～10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106433 CN1076468A (en) | 1992-03-14 | 1992-03-14 | Graphite-metal base composite sealing material and manufacture craft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106433 CN1076468A (en) | 1992-03-14 | 1992-03-14 | Graphite-metal base composite sealing material and manufacture craft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1076468A true CN1076468A (en) | 1993-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106433 Pending CN1076468A (en) | 1992-03-14 | 1992-03-14 | Graphite-metal base composite sealing material and manufacture craft |
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| Country | Link |
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| CN (1) | CN1076468A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093016C (en) * | 2000-03-29 | 2002-10-23 | 上海交通大学 | Sealing material and method for low-pressure casting crucible |
| CN102996806A (en) * | 2012-12-07 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Brittle-fracture-resistant large-diameter graphite stationary ring for mechanical seal and manufacturing method of graphite stationary ring |
| CN102996805A (en) * | 2012-12-07 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Brittle-fracture-resistant graphite stationary ring for mechanical seal and manufacturing method of brittle-fracture-resistant graphite stationary ring |
| CN102996807A (en) * | 2012-12-12 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Large-diameter graphite stationary ring for mechanical seal and manufacturing method thereof |
| CN103408890A (en) * | 2013-07-18 | 2013-11-27 | 常州大学 | Preparation method of Cu/carbon graphite mechanical sealing composite material |
| CN103435967A (en) * | 2013-07-18 | 2013-12-11 | 常州大学 | Preparation method of Al/carbon graphite mechanical seal composite material |
| CN105276192A (en) * | 2014-10-16 | 2016-01-27 | 侯玉杰 | Manufacturing method for carbon-graphite floating ring |
| CN105276182A (en) * | 2014-07-03 | 2016-01-27 | 浙江三花股份有限公司 | Sealing element made of composite materials |
| CN107588035A (en) * | 2017-09-07 | 2018-01-16 | 安徽国泰泵科技有限公司 | A kind of chemical industry mechanical seal for pump |
| WO2021047670A1 (en) * | 2019-09-14 | 2021-03-18 | 江苏永力管道有限公司 | Metal-pressure-ring and sealing-packing composite device and manufacturing method therefor |
| WO2021047669A1 (en) * | 2019-09-14 | 2021-03-18 | 江苏永力管道有限公司 | Combined multi-end-face sealing rotary compensator |
-
1992
- 1992-03-14 CN CN 92106433 patent/CN1076468A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093016C (en) * | 2000-03-29 | 2002-10-23 | 上海交通大学 | Sealing material and method for low-pressure casting crucible |
| CN102996806A (en) * | 2012-12-07 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Brittle-fracture-resistant large-diameter graphite stationary ring for mechanical seal and manufacturing method of graphite stationary ring |
| CN102996805A (en) * | 2012-12-07 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Brittle-fracture-resistant graphite stationary ring for mechanical seal and manufacturing method of brittle-fracture-resistant graphite stationary ring |
| CN102996805B (en) * | 2012-12-07 | 2016-01-20 | 辽宁天泽产业集团机械制造有限公司 | A kind of mechanical seal graphite stationary ring of resistance to embrittlement and manufacture method thereof |
| CN102996807A (en) * | 2012-12-12 | 2013-03-27 | 辽宁天泽产业集团机械制造有限公司 | Large-diameter graphite stationary ring for mechanical seal and manufacturing method thereof |
| CN103435967B (en) * | 2013-07-18 | 2015-04-22 | 常州大学 | Preparation method of Al/carbon graphite mechanical seal composite material |
| CN103435967A (en) * | 2013-07-18 | 2013-12-11 | 常州大学 | Preparation method of Al/carbon graphite mechanical seal composite material |
| CN103408890B (en) * | 2013-07-18 | 2015-04-22 | 常州大学 | Preparation method of Cu/carbon graphite mechanical sealing composite material |
| CN103408890A (en) * | 2013-07-18 | 2013-11-27 | 常州大学 | Preparation method of Cu/carbon graphite mechanical sealing composite material |
| CN105276182A (en) * | 2014-07-03 | 2016-01-27 | 浙江三花股份有限公司 | Sealing element made of composite materials |
| CN105276192A (en) * | 2014-10-16 | 2016-01-27 | 侯玉杰 | Manufacturing method for carbon-graphite floating ring |
| CN107588035A (en) * | 2017-09-07 | 2018-01-16 | 安徽国泰泵科技有限公司 | A kind of chemical industry mechanical seal for pump |
| WO2021047670A1 (en) * | 2019-09-14 | 2021-03-18 | 江苏永力管道有限公司 | Metal-pressure-ring and sealing-packing composite device and manufacturing method therefor |
| WO2021047669A1 (en) * | 2019-09-14 | 2021-03-18 | 江苏永力管道有限公司 | Combined multi-end-face sealing rotary compensator |
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