CN106368848A - 一种表面喷涂高温减摩涂层的排气歧管垫片 - Google Patents

一种表面喷涂高温减摩涂层的排气歧管垫片 Download PDF

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Publication number
CN106368848A
CN106368848A CN201611029095.5A CN201611029095A CN106368848A CN 106368848 A CN106368848 A CN 106368848A CN 201611029095 A CN201611029095 A CN 201611029095A CN 106368848 A CN106368848 A CN 106368848A
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antifriction coating
temperature
exhaust manifold
temperature antifriction
sealing
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CN201611029095.5A
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阮卫平
季旭东
王青春
梁辉
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DONGFENG (SHIYAN) GASKETS Co Ltd
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DONGFENG (SHIYAN) GASKETS Co Ltd
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Priority to CN201611029095.5A priority Critical patent/CN106368848A/zh
Publication of CN106368848A publication Critical patent/CN106368848A/zh
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • 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
    • 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 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B05D2202/10—Metallic substrate based on Fe
    • B05D2202/15—Stainless steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2601/00—Inorganic fillers
    • B05D2601/20—Inorganic fillers used for non-pigmentation effect

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Gasket Seals (AREA)

Abstract

本发明公开了一种表面喷涂高温减摩涂层的排气歧管垫片，包括密封垫片本体、高温减摩涂层和不锈钢底层，所述密封垫片本体由高温减摩涂层和不锈钢底层构成，所述高温减摩涂层喷涂于不锈钢底层的表面。该表面喷涂高温减摩涂层的排气歧管垫片通过在密封垫表面涂覆高温减摩涂料，在密封垫及法兰之间形成一种隔热介质，降低热能的传导并保护密封垫；涂料本身可以填充法兰面的微小刀纹起到微密封作用；涂料中添加有适当比例的二硫化钼，可以在密封垫和法兰之间形成一层润滑膜，减小法兰和垫片因膨胀和收缩产生的相对摩擦力，从而使垫片在超高温的环境中也能够保证良好的密封性能。

Description

一种表面喷涂高温减摩涂层的排气歧管垫片
技术领域
本发明涉及汽车零部件技术领域，具体为一种表面喷涂高温减摩涂层的排气歧管垫片。
背景技术
排气***是指连接燃烧室的排气口，经由排气歧管及排气管尾段将废气排放，并将高温及高压的废气排放产生的噪音降低。如果排气管无法迅速排光燃烧后的废气，进气也相对无法完全吸入新鲜空气；此刻残留在燃烧室内的废气，将会影响到下一次的燃烧效能，如此一来，会影响发动机的动力。废气排放过程中最先经过排气歧管，排气歧管在设计上最重要的是避免各汽缸间的排气相互干扰，使废气尽可能地完全排出管外。为了保证排气歧管排放废气过程中不出现漏气的情况，在排气歧管上设置有排气歧管垫片。
涡轮增压发动机排气歧管部分温度一般很高可达到900℃～1030℃，法兰面的热膨胀和收缩都比较大，普通的排气歧管垫片在这种工况下极易损坏失效，垫片薄弱密封地方有可能发漏气现象，影响发动机的整体性能甚至减少发动机的使用寿命。
发明内容
本发明的目的在于提供一种表面喷涂高温减摩涂层的排气歧管垫片，以解决上述背景技术中提出的现有技术中的排气歧管垫片在高温状态下的热膨胀和收缩较大，极易损坏失效的问题。
为实现上述目的，本发明提供如下技术方案：一种表面喷涂高温减摩涂层的排气歧管垫片，包括密封垫片本体、高温减摩涂层和不锈钢底层，所述密封垫片本体由高温减摩涂层和不锈钢底层构成，所述高温减摩涂层喷涂于不锈钢底层的表面。
优选的，所述高温减摩涂层采用水性二硫化钼自润滑减摩涂料。
与现有技术相比，本发明的有益效果是：该表面喷涂高温减摩涂层的排气歧管垫片通过在密封垫表面涂覆高温减摩涂料，在密封垫及法兰之间形成一种隔热介质，降低热能的传导并保护密封垫；涂料本身可以填充法兰面的微小刀纹起到微密封作用；涂料中添加有适当比例的二硫化钼，可以在密封垫和法兰之间形成一层润滑膜，减小法兰和垫片因膨胀和收缩产生的相对摩擦力，从而使垫片在超高温的环境中也能够保证良好的密封性能。
附图说明
图1为本发明结构示意图；
图2为本发明A-A剖视图。
图中：1、密封垫片本体，2、高温减摩涂层，3、不锈钢底层。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1-2，本发明提供一种技术方案：一种表面喷涂高温减摩涂层的排气歧管垫片，包括密封垫片本体1、高温减摩涂层2和不锈钢底层3，其特征在于：密封垫片本体1由高温减摩涂层2和不锈钢底层3构成，高温减摩涂层2喷涂于不锈钢底层3的表面。
上述实施例中，具体的，高温减摩涂层2采用水性二硫化钼自润滑减摩涂料，涂料中添加有二硫化钼，可以在密封垫和法兰之间形成一层润滑膜，减小法兰和垫片因膨胀和收缩产生的相对摩擦力。
工作原理：在使用该表面喷涂高温减摩涂层的排气歧管垫片时，首先需对整个表面喷涂高温减摩涂层的排气歧管垫片有一个结构上的了解，该表面喷涂高温减摩涂层的排气歧管垫片的主要生产工艺为密封垫片本体冲压→清洗→喷涂，不锈钢底层3通过冲压而成，高温减摩涂层2通过喷涂附着在不锈钢底层3的表面，在不锈钢底层3表面形成一层薄的保护膜，密封垫片本体1装配到法兰后，高温减摩涂层2可以填充法兰表面细微的刀纹间隙起到微密封作用，高温减摩涂层2中添加有二硫化钼，具有耐高温及减摩作用，同时高温减摩涂层2可以在法兰及密封垫片本体1之间形成绝热膜，降低法兰向密封垫片本体1的热传导，减小密封垫片本体1和法兰之间的摩擦力，从而达到保护密封垫片本体1的作用。
综上所述，以上显示和描述了本发明的基本原理、主要特征和优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其效物界定。

Claims (2)

1.一种表面喷涂高温减摩涂层的排气歧管垫片，包括密封垫片本体(1)、高温减摩涂层(2)和不锈钢底层(3)，其特征在于：所述密封垫片本体(1)由高温减摩涂层(2)和不锈钢底层(3)构成，所述高温减摩涂层(2)喷涂于不锈钢底层(3)的表面。
2.根据权利要求1所述的一种表面喷涂高温减摩涂层的排气歧管垫片，其特征在于：所述高温减摩涂层(2)采用水性二硫化钼自润滑减摩涂料。
CN201611029095.5A 2016-11-19 2016-11-19 一种表面喷涂高温减摩涂层的排气歧管垫片 Pending CN106368848A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110284909A (zh) * 2019-07-31 2019-09-27 中铁第四勘察设计院集团有限公司 一种减摩的管片防水密封垫及盾构管片防水结构

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110284909A (zh) * 2019-07-31 2019-09-27 中铁第四勘察设计院集团有限公司 一种减摩的管片防水密封垫及盾构管片防水结构

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Application publication date: 20170201