CN106366464A - Forming method of rubber sealing cover for automobile exhaust manifolds - Google Patents
Forming method of rubber sealing cover for automobile exhaust manifolds Download PDFInfo
- Publication number
- CN106366464A CN106366464A CN201610779097.XA CN201610779097A CN106366464A CN 106366464 A CN106366464 A CN 106366464A CN 201610779097 A CN201610779097 A CN 201610779097A CN 106366464 A CN106366464 A CN 106366464A
- Authority
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- China
- Prior art keywords
- rubber
- forming method
- seconds
- seal cover
- sealing cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 28
- 239000005060 rubber Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 title abstract description 8
- 229920003051 synthetic elastomer Polymers 0.000 claims abstract description 7
- 239000005061 synthetic rubber Substances 0.000 claims abstract description 7
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 4
- 239000006229 carbon black Substances 0.000 claims abstract description 4
- 238000007689 inspection Methods 0.000 claims abstract description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920001084 poly(chloroprene) Polymers 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000008117 stearic acid Substances 0.000 claims abstract description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- XQSFXFQDJCDXDT-UHFFFAOYSA-N hydroxysilicon Chemical compound [Si]O XQSFXFQDJCDXDT-UHFFFAOYSA-N 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- GJJFWGQGJJGJEO-UHFFFAOYSA-N Decarine Chemical compound C1=NC2=C3C=C4OCOC4=CC3=CC=C2C2=C1C(OC)=C(O)C=C2 GJJFWGQGJJGJEO-UHFFFAOYSA-N 0.000 abstract 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- 230000003712 anti-aging effect Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- IUJLOAKJZQBENM-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)-2-methylpropan-2-amine Chemical compound C1=CC=C2SC(SNC(C)(C)C)=NC2=C1 IUJLOAKJZQBENM-UHFFFAOYSA-N 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229920002545 silicone oil Polymers 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 238000009966 trimming Methods 0.000 abstract 1
- 238000004073 vulcanization Methods 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
- 239000011787 zinc oxide Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Gasket Seals (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention provides a forming method of a rubber sealing cover for automobile exhaust manifolds. The method comprises the following steps: weighing 40% of ethylene propylene diene monomer rubber, 41% of chloroprene rubber, 4% of white carbon black, 4% of hydroxy silicone oil, 4% of nano zinc oxide, 2% of anti-aging agent, 2% of stearic acid, 0.5% of decarine and 2.5% of N-tert-butyl-2-benzothiazole sulfenamide as raw materials, synthesizing rubber by a Banbury mixer, regulating the air pressure to 0.5 MPa, and compounding for 500 seconds while keeping the temperature at 110 DEG C; milling the qualified synthetic rubber by an open mill, injecting into a mold of a vulcanizer, pressurizing, heating, and carrying out vulcanization treatment for 150 seconds; and carrying out trimming, inspection and warehousing on the vulcanized product, thereby obtaining the rubber sealing cover. By reasonably selecting the rubber components, the prepared rubber sealing hood can satisfy the special application demands of the exhaust manifold. Meanwhile, the forming method is simpler, and is more convenient in the operational process.
Description
Technical field
The present invention relates to auto industry technical field, the molding of rubber seal cover of more particularly, to a kind of automobile gas exhausting manifold branch
Method.
Background technology
Automobile gas exhausting manifold branch is and engine cylinders that the aerofluxuss of each cylinder are put together importing exhaust main, and carries
The pipeline disagreed.In order to reduce the resistance of aerofluxuss, improve the output of electromotor, so that the aerofluxuss of each cylinder is divided as far as possible
Open, Mei Gangyige branch, or Liang Gangyige branch, and so that each branch is lengthened mutual to reduce the gas in different pipes as far as possible
Impact.
Existing automobile gas exhausting manifold branch may be due to excessive accumulation waste residue, it is possible that aerofluxuss are not smooth in aerofluxuss
Problem.Therefore, it is necessary to provide a kind of automobile gas exhausting manifold branch, to solve the above problems.
At present, sealing cover structure can be used in portion discharge manifold, traditional seal closure is plastic material, and intensity is relatively
Difference, service life is short.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of automobile gas exhausting manifold branch, to solve current automobile gas exhausting manifold branch
May be due to excessive accumulation waste residue, it is possible that the not smooth problem of aerofluxuss in aerofluxuss.Meanwhile, present invention also offers
A kind of rubber seal cover and its forming method.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of automobile gas exhausting manifold branch, comprising: two escape pipes, tee T, Five-way tube and four air inlet pipe；Described two escape pipes
Connect with two ports of described tee T；Described four air inlet pipe are connected with four ports of described Five-way tube；Described threeway
Manage remaining a port a port remaining with described Five-way tube to connect；One of described two escape pipes escape pipe with
It is communicated with water pipe between one of described four air inlet pipe air inlet pipe；It is provided with rubber outside described tee T and described Five-way tube
Seal closure.
Described two escape pipes are led to described five with the junction of two ports of described tee T, described four air inlet pipe
The junction of four ports of pipe is equipped with sealing ring.
The remaining a port of described tee T a port remaining with described Five-way tube is connected by flange.
Rubber seal cover, by ethylene propylene diene rubber 40%, neoprene 41%, White Carbon black 4%, hydroxy silicon oil 4%, nano oxidized
Zinc 4%, age resistor 2%, stearic acid 2%, De Kalin alkali 0.5% and the n- tert-butyl group -2 benzothiazole sulfenamide 2.5% are made.
The forming method of rubber seal cover, step is as follows:
(1) weigh raw material by recipe requirements, then pass through banbury synthetic rubber, air pressure adjustment to 0.5mpa, temperature is maintained at
110 DEG C, mixing time is 500 seconds；
(2) will detect that qualified synthetic rubber carried out stopping bar by mill, be injected in the mould in vulcanizing equipment, plus
Pressure 150kgf/cm2, it is warming up to 150 DEG C, the time of carrying out is the vulcanizing treatment of 150 seconds；
(3) product that vulcanizing treatment is crossed is carried out deburring, inspection, warehouse-in, obtain final product rubber seal cover.
Advantage for present invention with effect is:
1), the automobile gas exhausting manifold branch of the present invention, comprising: two escape pipes, tee T, Five-way tube and four air inlet pipe；Described two
Individual escape pipe is connected with two ports of described tee T；Described four air inlet pipe are connected with four ports of described Five-way tube；
The remaining a port of described tee T a port remaining with described Five-way tube connects；One of described two escape pipes
It is communicated with water pipe between one of escape pipe and described four air inlet pipe air inlet pipe；Outside described tee T and described Five-way tube
It is provided with rubber seal cover；Automobile gas exhausting manifold branch can be avoided due to excessive accumulation waste residue in aerofluxuss, not smooth the asking of aerofluxuss occurs
Topic, and waste gas produced by high temperature that electromotor discharge can be utilized, convert thermal energy into as kinetic energy, be that automobile engine is supplemented
Partial power.
2), rubber seal cover is made using quality of rubber materials, have good breaking strength, elongation at break, tearing strength,
Resilience, resistance to ozone, anti-pollution and cementability, abnormal smells from the patient little the advantages of, than the seal closure of conventional plastic material, its height possessing
Strength structure performance can also meet the demand of exhaust manifold.
3), the forming method of rubber seal cover, by reasonable selection rubber components, enables prepared rubber seal cover to expire
The special applications demand of sufficient exhaust manifold.Meanwhile, forming method is fairly simple, and operating process is relatively simple.
Brief description
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation within rubber seal cover of the automobile gas exhausting manifold branch of the present invention；
Fig. 2 is that the automobile gas exhausting manifold branch of the present invention is provided with the schematic diagram of rubber seal cover.
In figure: air inlet pipe 10, tee T 1, Five-way tube 3, escape pipe 30, water pipe 6, rubber seal cover 7, sealing ring 5, flange
4.
Specific embodiment
Embodiment 1
As shown in Figure 1 to Figure 2, the present invention provides a kind of automobile gas exhausting manifold branch, comprising: two escape pipes 10, tee Ts 1, five lead to
Pipe 3 and four air inlet pipe 30.
Specifically, two escape pipes 10 are connected with two ports of tee T 1, four air inlet pipe 30 and the four of Five-way tube 3
The connection of individual port, the remaining a port of tee T 1 a port remaining with Five-way tube 3 connects；In two escape pipes 10
It is communicated with water pipe 6 between one of one escape pipe 10 and four air inlet pipe 30 air inlet pipe 30；Outside tee T 1 and Five-way tube 3
Portion is provided with rubber seal cover 7, and two escape pipes 10 are logical with the junction of two ports of tee T 1, four air inlet pipe 30 and five
The junction of four ports of pipe 3 is equipped with sealing ring 5, the remaining a port of tee T 1 end remaining with Five-way tube 3
Mouth is connected by flange 4, and this automobile gas exhausting manifold branch is used as flow dividing structure by designing two escape pipes 10, efficiently solves aerofluxuss
Not smooth problem.Additionally, water pipe 6 can be connected with the inlet pipeline of peripheral hardware, after car engine, high-temp waste gas can be produced,
Because the boiling point of water is 100 DEG C, and the temperature of waste gas can reach more than 500 DEG C, so can make the boiling water in water pipe 6
And producing steam, steam can enter in steam engine, makes steam engine produce kinetic energy, so can reduce the fuel oil of automobile engine
Amount.
From above technical scheme, the automobile gas exhausting manifold branch of the present invention, can avoid automobile gas exhausting manifold branch in aerofluxuss by
In excessive accumulation waste residue, the not smooth problem of aerofluxuss, and the high temperature produced by waste gas that available electromotor is discharged occur, will
Heat energy is converted into kinetic energy, is that automobile engine supplements partial power.
Embodiment 2
Rubber seal cover, by ethylene propylene diene rubber 40%, neoprene 41%, White Carbon black 4%, hydroxy silicon oil 4%, nano zine oxide
4%th, age resistor 2%, stearic acid 2%, De Kalin alkali 0.5% and the n- tert-butyl group -2 benzothiazole sulfenamide 2.5% are made.
Embodiment 3
The forming method of rubber seal cover, step is as follows:
(1) weigh raw material by recipe requirements, then pass through banbury synthetic rubber, air pressure adjustment to 0.5mpa, temperature is maintained at
110 DEG C, mixing time is 500 seconds；
(2) will detect that qualified synthetic rubber carried out stopping bar by mill, be injected in the mould in vulcanizing equipment, plus
Pressure 150kgf/cm2, it is warming up to 150 DEG C, the time of carrying out is the vulcanizing treatment of 150 seconds；
(3) product that vulcanizing treatment is crossed is carried out deburring, inspection, warehouse-in, obtain final product rubber seal cover.
The present invention is not limited to above-described embodiment, and embodiment is exemplary it is intended to be used for explaining the present invention, and can not
It is interpreted as limitation of the present invention.
Claims (1)
1. a kind of automobile gas exhausting manifold branch forming method of rubber seal cover is it is characterised in that step is as follows:
(1) ethylene propylene diene rubber 40%, neoprene 41%, White Carbon black 4%, hydroxy silicon oil 4%, nano zine oxide 4%, age resistor are pressed
2%th, stearic acid 2%, De Kalin alkali 0.5%, the n- tert-butyl group -2 benzothiazole sulfenamide 2.5% weigh raw material, then pass through banburying
Machine synthetic rubber, air pressure adjustment to 0.5mpa, temperature is maintained at 110 DEG C, and mixing time is 500 seconds；
(2) will detect that qualified synthetic rubber carried out stopping bar by mill, be injected in the mould in vulcanizing equipment, plus
Pressure 150kgf/cm2, it is warming up to 150 DEG C, the time of carrying out is the vulcanizing treatment of 150 seconds；
(3) product that vulcanizing treatment is crossed is carried out deburring, inspection, warehouse-in, obtain final product rubber seal cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610779097.XA CN106366464A (en) | 2016-08-31 | 2016-08-31 | Forming method of rubber sealing cover for automobile exhaust manifolds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610779097.XA CN106366464A (en) | 2016-08-31 | 2016-08-31 | Forming method of rubber sealing cover for automobile exhaust manifolds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106366464A true CN106366464A (en) | 2017-02-01 |
Family
ID=57902235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610779097.XA Pending CN106366464A (en) | 2016-08-31 | 2016-08-31 | Forming method of rubber sealing cover for automobile exhaust manifolds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106366464A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101402750A (en) * | 2008-11-07 | 2009-04-08 | 安徽中鼎密封件股份有限公司 | Air feeder rubber member between engine oil cleaner and intake manifold of automobile, and manufacturing process thereof |
| CN101402763A (en) * | 2008-11-07 | 2009-04-08 | 安徽中鼎密封件股份有限公司 | Car engine cooling system heat radiator plate-type rubber seal strip assembly and manufacturing process thereof |
| CN102352072A (en) * | 2011-08-19 | 2012-02-15 | 安徽中鼎密封件股份有限公司 | Rubber seal cover assembly of steering shaft of automobile steering column and manufacturing process thereof |
| CN104086902A (en) * | 2014-07-02 | 2014-10-08 | 安徽宁国尚鼎橡塑制品有限公司 | High-temperature-resistant rubber sealing ring for automobiles |
-
2016
- 2016-08-31 CN CN201610779097.XA patent/CN106366464A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101402750A (en) * | 2008-11-07 | 2009-04-08 | 安徽中鼎密封件股份有限公司 | Air feeder rubber member between engine oil cleaner and intake manifold of automobile, and manufacturing process thereof |
| CN101402763A (en) * | 2008-11-07 | 2009-04-08 | 安徽中鼎密封件股份有限公司 | Car engine cooling system heat radiator plate-type rubber seal strip assembly and manufacturing process thereof |
| CN102352072A (en) * | 2011-08-19 | 2012-02-15 | 安徽中鼎密封件股份有限公司 | Rubber seal cover assembly of steering shaft of automobile steering column and manufacturing process thereof |
| CN104086902A (en) * | 2014-07-02 | 2014-10-08 | 安徽宁国尚鼎橡塑制品有限公司 | High-temperature-resistant rubber sealing ring for automobiles |
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Application publication date: 20170201 |
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