CN116080088A - Integral bonding method of silicon carbide lining - Google Patents
Integral bonding method of silicon carbide lining Download PDFInfo
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- CN116080088A CN116080088A CN202310141362.1A CN202310141362A CN116080088A CN 116080088 A CN116080088 A CN 116080088A CN 202310141362 A CN202310141362 A CN 202310141362A CN 116080088 A CN116080088 A CN 116080088A
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- silicon carbide
- coating
- lining
- carbide lining
- vulcanization
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- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 89
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 66
- 238000000576 coating method Methods 0.000 claims abstract description 66
- 238000004073 vulcanization Methods 0.000 claims abstract description 62
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 229920001084 poly(chloroprene) Polymers 0.000 claims abstract description 27
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 2
- 239000006173 Good's buffer Substances 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229920006235 chlorinated polyethylene elastomer Polymers 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- -1 curing for 8 minutes Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007719 peel strength test Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/18—Cold vulcanisation
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/03—After-treatments in the joint area
- B29C66/034—Thermal after-treatments
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/744—Joining plastics material to non-plastics material to elements other than metals
Abstract
The invention discloses an integral bonding method of a silicon carbide lining, which relates to the technical field of cyclone lining processing and is technically characterized by comprising the following steps: step 1, cleaning a silicon carbide lining, and drying; step 2, spraying a thermal vulcanizing agent outside the silicon carbide lining, and then coating neoprene outside the silicon carbide lining; step 3, placing the silicon carbide lining coated with the chloroprene rubber into a shell mold for a first vulcanization reaction; step 4, cleaning the inner wall of the cyclone shell, coating a vulcanizing agent for primary coating, curing for 8-12 minutes, and coating a surface coating after drying; and 5, coating the bottom coating on the vulcanized silicon carbide lining in the step 3, and then assembling the silicon carbide lining with the cyclone shell in the step 4 to carry out a second vulcanization reaction so as to realize bonding of the bottom flow port of the silicon carbide lining. This scheme makes inside lining and casing firmly bond through the mode of many times vulcanization, possess good buffer performance to the life of swirler has been improved.
Description
Technical Field
The invention relates to the technical field of cyclone lining processing, in particular to an integral bonding method of a silicon carbide lining.
Background
Cyclone is used as a common separation and classification device, and the working principle is centrifugal sedimentation. When the two-phase (or three-phase) mixed liquid to be separated enters the cyclone tangentially from the periphery of the cyclone at a certain pressure, strong three-dimensional elliptic strong rotary shearing turbulence motion is generated. Because the particle size difference (or density difference) exists between the coarse particles (or heavy phase) and the fine particles (or light phase), the centrifugal force, centripetal buoyancy force, fluid drag force and the like of the coarse particles (or heavy phase) are different, most of the coarse particles (or heavy phase) are discharged through a bottom flow port of the cyclone through centrifugal sedimentation, and most of the fine particles (or light phase) are discharged through an overflow pipe, so that the purpose of separation and classification is achieved. Because its inside granule, liquid high-speed erode the swirler inner wall, can lead to its life greatly reduced, consequently, often set up the inside lining in the pipeline in order to improve its life, these lining materials are aluminium oxide, carborundum material generally, and the wear-resisting problem of traditional material has been solved to these materials, does not solve the inside lining body fragile, the common condition of easily coming off.
The lining material (alumina, silicon carbide) and the steel shell are bonded by epoxy resin at the present stage, and the lining material is characterized by good bonding property, but the buffering effect is almost zero, the impact of the material in the cyclone is not buffered, and the lining material is a brittle material with ultrahigh wear resistance and hardness. They are quite disadvantageous against impact loads and against shock.
Disclosure of Invention
The invention aims to solve the problems, and provides a method for integrally bonding a silicon carbide lining, which ensures that a lining material and a steel shell are firmly bonded in a manner of over-vulcanizing for many times and has excellent buffering performance. Thereby greatly improving the service life of the cyclone.
In order to achieve the above purpose, the technical scheme of the invention is as follows: a method of integrally bonding a silicon carbide liner, comprising the steps of:
step 1, cleaning a silicon carbide lining, and drying;
step 2, spraying a thermal vulcanizing agent outside the silicon carbide lining, and then coating neoprene outside the silicon carbide lining;
step 3, placing the silicon carbide lining coated with the chloroprene rubber into a shell mold for a first vulcanization reaction;
step 4, cleaning the inner wall of the cyclone shell, coating a base coat, curing for 8-12 minutes, and coating a top coat after drying;
and 5, coating the bottom coating on the vulcanized silicon carbide lining in the step 3, then assembling the silicon carbide lining with the cyclone shell in the step 4, and performing a second vulcanization reaction to realize bonding of the bottom flow port of the silicon carbide lining.
Through the scheme, the hot vulcanizing agent in the step 2 adopts the inlet kem roc, and the silicon carbide lining and the chloroprene rubber can be firmly bonded together by using the kem roc; the neoprene adopted by the scheme can realize secondary cold vulcanization, and the process cannot be realized by other series; the first vulcanization reaction is thermal vulcanization, and aims to bond the silicon carbide lining and the chloroprene rubber, the thermal vulcanization enables linear macromolecules of the rubber to form a three-dimensional reticular structure through crosslinking of chemical bonds under the action of chemistry or physics, and finally the vulcanization enables the plasticity of the rubber to be reduced, the elasticity to be increased, the capability of resisting external force deformation to be greatly increased, and other physical and chemical properties to be improved; the bottom coating adopted in the step 4 plays a role of being opened upwards and downwards, so that the cyclone shell and the silicon carbide lining are conveniently combined and bonded together through the vulcanizing agent.
Preferably, in step 2, the spraying thickness of the thermal vulcanizing agent is 25um to 30um. If the spraying thickness of the vulcanizing agent is too thin, the adhesion between the lining and the chloroprene rubber is not tight enough and is easy to fall off, if the spraying thickness of the vulcanizing agent is too thick, the vulcanizing agent can be operated for too fast vulcanization in the first vulcanization process, the rubber is molded in the mold by flowing under pressure, and after each position of the mold cavity is filled, the rubber is cured at high temperature, if the curing time is too fast, the rubber is cured under the condition of insufficient flowing, and the situation of rubber shortage can occur.
More preferably, in step 2, the neoprene has a thickness of 4 to 6mm. Too thick neoprene will cause too much resilience and insufficient force Bao Gou.
Preferably, in step 3, the first vulcanization reaction temperature is 160 ℃ and the vulcanization time is 43-47 min. In the first vulcanization process, the rubber has better fluidity, and can ensure that the rubber is filled in each position of a die cavity, the crosslinking degree of the first vulcanization is common, and a space for continuous vulcanization is provided for the subsequent secondary cold flow.
More preferably, the shell mold in the step 3 is identical in structure and size with the cyclone shell in the step 4.
Preferably, in the step 4, the primer is a metal treating agent, and the thickness of the primer is 10-15 um; the surface coating is adhesive, three times, and the thickness of the surface coating is 40um. The metal treating agent has the function of transiting between the metal surface and the rubber, so that the cold vulcanization adhesive is convenient to bond with the metal better.
Preferably, in step 5, the second vulcanization reaction is first incubated at 50℃for 8 hours and then incubated at 20℃for 24 hours. The second vulcanization reaction is a cold flow process, and on the basis of the first vulcanization reaction, the rubber and the vulcanizing agent are further crosslinked, so that the adhesiveness between the rubber and the vulcanizing agent is improved.
More preferably, in step 5, the primer is applied twice, the thickness of the primer is 10-15 um, and after 4 hours of initial setting, the liner and the shell are assembled together. The primer is initially set for 4 hours, in the process, the fluidity of the primer is weakened gradually, and the problem that the primer is extruded and thinned to influence the secondary vulcanization effect due to the fact that the liner and the shell are directly assembled is avoided.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme, through multiple vulcanization, the lining material and the steel shell are firmly bonded, and meanwhile, the cyclone has excellent buffering performance, so that the impact resistance and vibration resistance of the cyclone are improved, and the service life of the cyclone is greatly prolonged. 2. The neoprene can realize secondary cold vulcanization, and the scheme is initiated.
Detailed Description
In order that those skilled in the art will better understand the present invention, a further detailed description of embodiments of the present invention will be provided below, with the understanding that the present invention is described in some, but not all, embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The present invention will be described in detail with reference to examples.
Example 1
A method of integrally bonding a silicon carbide liner, comprising the steps of:
step 1, cleaning a silicon carbide lining, and drying;
step 2, spraying a thermal vulcanizing agent kemlock outside the silicon carbide lining, wherein the spraying thickness of the thermal vulcanizing agent is 28um, and then coating neoprene outside the silicon carbide lining, wherein the thickness of the neoprene is 5mm;
step 3, placing the silicon carbide lining coated with the neoprene in a shell mold to carry out a first vulcanization reaction, wherein the temperature of the first vulcanization reaction is 160 ℃, and the vulcanization time is 45min;
step 4, cleaning the inner wall of the cyclone shell, coating a primer metal treating agent, curing for 10 minutes, and coating an adhesive after drying;
and 5, coating the bottom coating kemlock outside the vulcanized silicon carbide lining in the step 3, coating the bottom coating twice, coating the thickness of 12um, performing initial setting for 4 hours, then assembling the silicon carbide lining with the cyclone shell in the step 4, performing a second vulcanization reaction, keeping the temperature of the second vulcanization reaction at 50 ℃ for 8 hours, and keeping the temperature of the second vulcanization reaction at 20 ℃ for 24 hours, thus realizing the bonding of the bottom flow port of the silicon carbide lining.
Example 2
A method of integrally bonding a silicon carbide liner, comprising the steps of:
step 1, cleaning a silicon carbide lining, and drying;
step 2, spraying a thermal vulcanizing agent kemlock outside the silicon carbide lining, wherein the spraying thickness of the thermal vulcanizing agent is 30um, and then coating neoprene outside the silicon carbide lining, wherein the thickness of the neoprene is 4mm;
step 3, placing the silicon carbide lining coated with the neoprene in a shell mold to carry out a first vulcanization reaction, wherein the temperature of the first vulcanization reaction is 160 ℃, and the vulcanization time is 43min;
step 4, cleaning the inner wall of the cyclone shell, coating a primer metal treating agent, curing for 8 minutes, and coating a surface coating adhesive after drying;
and 5, coating the bottom coating kemlock outside the vulcanized silicon carbide lining in the step 3, coating the bottom coating twice, coating the thickness of 15um, performing initial setting for 4 hours, then assembling the silicon carbide lining with the cyclone shell in the step 4, performing a second vulcanization reaction, keeping the temperature of the second vulcanization reaction at 50 ℃ for 8 hours, and keeping the temperature of the second vulcanization reaction at 20 ℃ for 24 hours, thus realizing the bonding of the bottom flow port of the silicon carbide lining.
Example 3
A method of integrally bonding a silicon carbide liner, comprising the steps of:
step 1, cleaning a silicon carbide lining, and drying;
step 2, spraying a thermal vulcanizing agent kemlock outside the silicon carbide lining, wherein the spraying thickness of the thermal vulcanizing agent is 25 mu m, and then coating neoprene outside the silicon carbide lining, wherein the thickness of the neoprene is 6mm;
step 3, placing the silicon carbide lining coated with the neoprene in a shell mold to carry out a first vulcanization reaction, wherein the temperature of the first vulcanization reaction is 160 ℃, and the vulcanization time is 47min;
step 4, cleaning the inner wall of the cyclone shell, coating a primer metal treating agent, curing for 12 minutes, and coating a surface coating adhesive after drying;
and 5, coating the bottom coating kemlock outside the vulcanized silicon carbide lining in the step 3, coating the bottom coating twice, coating the thickness of 10um, performing initial setting for 4 hours, then assembling the silicon carbide lining with the cyclone shell in the step 4, performing a second vulcanization reaction, keeping the temperature of the second vulcanization reaction at 50 ℃ for 8 hours, and keeping the temperature of the second vulcanization reaction at 20 ℃ for 24 hours, thus realizing the bonding of the bottom flow port of the silicon carbide lining.
Comparative example 1
A method of integrally bonding a silicon carbide liner, comprising the steps of:
step 1, cleaning a silicon carbide lining, and drying;
step 2, spraying a thermal vulcanizing agent kemlock outside the silicon carbide lining, wherein the spraying thickness of the thermal vulcanizing agent is 40um, and then coating neoprene outside the silicon carbide lining, wherein the thickness of the neoprene is 10mm;
step 3, placing the silicon carbide lining coated with the neoprene in a shell mold to carry out a first vulcanization reaction, wherein the temperature of the first vulcanization reaction is 160 ℃, and the vulcanization time is 44min;
step 4, cleaning the inner wall of the cyclone shell, coating a primer metal treating agent, curing for 20 minutes, and coating a surface coating adhesive after drying;
and 5, coating the bottom coating kemlock outside the vulcanized silicon carbide lining in the step 3, coating the bottom coating twice, coating the thickness of 5um, performing initial setting for 4 hours, then assembling the silicon carbide lining with the cyclone shell in the step 4, performing a second vulcanization reaction, keeping the temperature of the second vulcanization reaction at 50 ℃ for 8 hours, and keeping the temperature of the second vulcanization reaction at 20 ℃ for 24 hours, thus realizing the bonding of the bottom flow port of the silicon carbide lining.
Comparative example 2
A method of integrally bonding a silicon carbide liner, comprising the steps of:
step 1, cleaning a silicon carbide lining, and drying;
step 2, spraying a thermal vulcanizing agent kemlock outside the silicon carbide lining, wherein the spraying thickness of the thermal vulcanizing agent is 30um, and then coating chlorinated polyethylene rubber outside the silicon carbide lining, wherein the thickness of the chlorinated polyethylene rubber is 4mm;
step 3, placing the silicon carbide lining coated with the chlorinated polyethylene rubber into a shell mold for a first vulcanization reaction, wherein the temperature of the first vulcanization reaction is 160 ℃, and the vulcanization time is 43min;
step 4, cleaning the inner wall of the cyclone shell, coating a primer metal treating agent, curing for 8 minutes, and coating a surface coating adhesive after drying;
and 5, coating the bottom coating kemlock outside the vulcanized silicon carbide lining in the step 3, coating the bottom coating twice, coating the thickness of 15um, performing initial setting for 4 hours, then assembling the silicon carbide lining with the cyclone shell in the step 4, performing a second vulcanization reaction, keeping the temperature of the second vulcanization reaction at 50 ℃ for 8 hours, and keeping the temperature of the second vulcanization reaction at 20 ℃ for 24 hours, thus realizing the bonding of the bottom flow port of the silicon carbide lining. In practical experiments, the silicon carbide lining and the shell cannot be bonded together during secondary vulcanization in the scheme, so that the follow-up experiment is meaningless.
Comparative example 3
A commercially available epoxy bonded monolithic silicon carbide liner underflow opening was selected.
Test 1: peel strength test
Experimental criteria and methods: GB 7760-87; the measurement was performed by a single plate method in the measurement of adhesion between the vulcanized rubber and the metal.
Experimental facilities: a single-board method detector.
The test results are shown in Table 1.
TABLE 1 peel strength test results
As can be seen from table 1, when the thermal vulcanizing agent adopted in the present embodiment is too thick in spray thickness, the peel strength of comparative example 1 is significantly smaller than that of the examples because the vulcanization reaction is accelerated, resulting in partial position shortage of the adhesive; as can be seen from comparative example 2, the substitution of neoprene with other types of rubber is that in the present process, the secondary vulcanization process cannot be achieved, resulting in a silicon carbide liner that cannot be tightly connected to the outer shell; when the connection is made with a commercially available epoxy resin, the peel strength is much lower than the bonding scheme provided in the examples. Therefore, the connecting mode of the silicon carbide lining provided by the invention has obvious progress.
Test 2: service life test
The experimental method comprises the following steps: the silicon carbide lining underflow port obtained in the examples and the comparative examples is selected, the service life of the silicon carbide lining underflow port is measured under the same water flow and water quality conditions, and the test environment is that: the experimental results of the water and raw material mixture with the concentration of 1.16 and the pressure of 0.35Mpa are as follows:
the liners obtained by bonding in examples 1-3 had defects that the surface began to be washed out by water flow after continuous use for 95 days;
the liner bonded in comparative example 1 was cracked and broken on the silicon carbide surface after 18 days of continuous use;
the liner adhered in comparative example 3 was cracked and broken on the silicon carbide surface after continued use for 22 days;
therefore, the bonding method of the bottom flow port of the integral silicon carbide lining has better buffering and firmness, so that the service life of the cyclone can be greatly prolonged when the bonding method is applied to the cyclone lining.
The above specific embodiments are provided for illustrative purposes only and are not intended to limit the invention, and modifications, no inventive contribution, will be made to the embodiments by those skilled in the art after having read the present specification, as long as they are within the scope of the patent statutes.
Claims (8)
1. A method of integrally bonding a silicon carbide liner, comprising the steps of:
step 1, cleaning a silicon carbide lining, and drying;
step 2, spraying a thermal vulcanizing agent outside the silicon carbide lining, and then coating neoprene outside the silicon carbide lining;
step 3, placing the silicon carbide lining coated with the chloroprene rubber into a shell mold for a first vulcanization reaction;
step 4, cleaning the inner wall of the cyclone shell, coating a base coat, curing for 8-12 minutes, and coating a top coat after drying;
and 5, coating the bottom coating on the vulcanized silicon carbide lining in the step 3, then assembling the silicon carbide lining with the cyclone shell in the step 4, and performing a second vulcanization reaction to realize bonding of the bottom flow port of the silicon carbide lining.
2. A method of integrally bonding a silicon carbide inner liner as claimed in claim 1 wherein in step 2 the thermal vulcanizing agent is sprayed at a thickness of 25 to 30 μm.
3. A method of integrally bonding a silicon carbide liner according to claim 2 wherein in step 2 the neoprene is 4 to 6mm thick.
4. A method for integrally bonding a silicon carbide inner liner according to claim 1 wherein in step 3, the first vulcanization reaction temperature is 160 ℃ and the vulcanization time is 43 to 47 minutes.
5. The method for integrally bonding a silicon carbide liner according to claim 1, wherein in the step 4, the primer is a metal treating agent, and the thickness of the primer is 10-15 μm; the surface coating is adhesive, three times, and the thickness of the surface coating is 40um.
6. A method of integrally bonding a silicon carbide liner according to claim 1 wherein in step 5 the second vulcanization reaction is held at 50 ℃ for 8 hours and held at 20 ℃ for a further 24 hours.
7. The method for integrally bonding a silicon carbide inner liner according to claim 6, wherein in the step 5, the primer is applied twice, the thickness of the primer is 10-15 μm, and after the initial setting is performed for 4 hours, the inner liner and the shell are assembled together.
8. A method of integrally bonding a silicon carbide liner according to claim 1 wherein the shell mold in step 3 is identical in construction and size to the cyclone housing in step 4.
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| CN202310141362.1A CN116080088A (en) | 2023-02-21 | 2023-02-21 | Integral bonding method of silicon carbide lining |
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| CN111605208A (en) * | 2020-05-09 | 2020-09-01 | 中北大学 | Method for hot vulcanization bonding of natural rubber and metal structural part |
| CN113829552A (en) * | 2021-09-15 | 2021-12-24 | 西北橡胶塑料研究设计院有限公司 | Method for manufacturing annular special-shaped rubber-plastic metal composite sealing element |
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