CN113663840A - 一种外氮屏铜喷涂工装及其喷涂工艺 - Google Patents
一种外氮屏铜喷涂工装及其喷涂工艺 Download PDFInfo
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- 238000005507 spraying Methods 0.000 title claims abstract description 57
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 42
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
- B05B13/0228—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/68—Arrangements for adjusting the position of spray heads
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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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
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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
- 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
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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
- B05D2202/00—Metallic substrate
- B05D2202/40—Metallic substrate based on other transition elements
- B05D2202/45—Metallic substrate based on other transition elements based on Cu
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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
- B05D2350/00—Pretreatment of the substrate
- B05D2350/30—Change of the surface
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- B05D2350/38—Roughening by mechanical means
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Abstract
本发明公开了一种外氮屏铜喷涂工装及其喷涂工艺,工装包括底座,底座两端对称设有三爪卡盘安装杆,三爪卡盘的底部通过连接杆铰接在三爪卡盘安装杆上,三爪卡盘安装杆的后侧设有角度调节杆,角度调节杆包括插设在底座中的调节杆以及位于调节杆上的U型耳座,调节杆伸出底座的上下端均设有高度调节定位螺母,三爪卡盘的正面设有用于夹持外氮屏端部的卡爪,三爪卡盘的背面设有铰接在U型耳座中的耳片,底座外设有可沿外氮屏轴向方向进行旋转喷涂的超音速火焰喷涂枪;喷涂工艺包括采用超音速火焰喷涂枪对外氮屏的铜喷涂区进行全面喷涂等步骤。本发明可以严格控制外氮屏的铜喷涂效果,使铜涂层有效满足热导率、厚度、宽度、结合强度等的涂层要求。
Description
技术领域
本发明涉及核聚变装置制造技术领域,具体涉及一种外氮屏铜喷涂工装及其喷涂工艺。
背景技术
EAST托卡马克是我国第一个超导磁约束聚变试验装置,主要用于等离子体物理实验研究和探索聚变试验反应堆所涉及的工程探索研究。EAST托卡马克的一个主要物理与工程目标是实现高参数条件下的等离子体长脉冲放电,这也是实现未来商业化稳态运行聚变反应堆所必须的条件。在长脉冲放电条件下有一个很重要的问题,就是及时排除放电室内多余的杂质气体。
外氮屏在温度降低的时候,可以吸附在EAST托卡马克里产生的一些气体杂质。外氮屏采用了与氮管相同的Inconel625合金来制作,以便于与氮管的塞焊连接。作为氮屏,必须能够把到达的热负荷快速有效地传递到氮管,并通过其中的液氮把热量带走。Inconel合金(低温)强度高、电阻率较大,对于减小涡流发热和电磁力的影响是有利的;但是其热导率低,却不利于迅速传递热量,因此需要在外氮屏的外侧制作铜环状斑马带,但在制作过程中,由于外氮屏属于大型弯管开口件,其铜喷涂难度极大,涂层必须一次性喷涂成功(因为失败涂层无法彻底清理干净),而且铜喷涂涂层需要满足热导率、厚度、宽度、结合强度等的涂层要求。因此亟需一种外氮屏铜喷涂工装及其喷涂工艺。
发明内容
本发明的目的在于,提供一种能够满足外氮屏铜喷涂涂层要求的喷涂工装及其喷涂工艺。
一种外氮屏铜喷涂工装,包括底座,底座两端对称设有三爪卡盘安装杆,三爪卡盘的底部通过连接杆铰接在三爪卡盘安装杆上,三爪卡盘安装杆的后侧设有角度调节杆,角度调节杆包括插设在底座中的调节杆以及位于调节杆上的U型耳座,调节杆伸出底座的上下端均设有高度调节定位螺母,三爪卡盘的正面设有用于夹持外氮屏端部的卡爪,三爪卡盘的背面设有铰接在U型耳座中的耳片,底座外设有可沿外氮屏轴向方向进行旋转喷涂的超音速火焰喷涂枪。
一种外氮屏铜喷涂工艺,使用上述外氮屏铜喷涂工装进行外氮屏的铜喷涂,包括以下步骤:
(1)、清理:对外氮屏进行除油除污处理;
(2)、喷砂:对外氮屏的铜喷涂区进行喷砂处理,喷砂完成后对喷砂区域进行粗糙度检测,保证粗糙度Ra不低于12.5;
(3)、装夹:将外氮屏夹持在底座两端的三爪卡盘之间;
(4)、调节角度:调整角度调节杆,使三爪卡盘达到与外氮屏的弯度要求相适配的倾斜角度;
(5)、喷涂:平稳低速回转外氮屏,采用超音速火焰喷涂枪对外氮屏的铜喷涂区进行全面喷涂;
(6)、检测。
本发明所述的铜喷涂工装,设计了能夹持外氮屏并平稳低速回转的夹具,来实现喷涂过程中外氮屏的角度旋转,并配合火焰喷涂枪的角度旋转功能,无死角喷涂,确保了外氮屏铜喷涂的合格率及成功率。
采用本发明所述的铜喷涂工艺,可以严格控制外氮屏的铜喷涂效果,使铜涂层有效满足热导率、厚度、宽度、结合强度等的涂层要求。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明中外氮屏铜喷涂工装的结构示意图。
具体实施方式
下面结合附图对本发明的优选实施例进行详细阐述,以使本发明的优点和特征能更易于被本领域技术人员理解,从而对本发明的保护范围做出更为清楚明确的界定。
参见图1,本发明提供的一种外氮屏铜喷涂工装,包括底座1,底座1两端对称设有三爪卡盘安装杆2,三爪卡盘3的底部通过连接杆4铰接在三爪卡盘安装杆2上,三爪卡盘安装杆2的后侧设有角度调节杆5,角度调节杆5包括插设在底座1中的调节杆51以及位于调节杆51上的U型耳座52,调节杆51伸出底座1的上下端均设有高度调节定位螺母53,三爪卡盘3的正面设有用于夹持外氮屏6端部的卡爪31,三爪卡盘3的背面设有铰接在U型耳座52中的耳片32,底座1外设有可沿外氮屏轴向方向进行旋转喷涂的超音速火焰喷涂枪7。
一种外氮屏铜喷涂工艺,使用上述外氮屏铜喷涂工装进行外氮屏的铜喷涂,包括以下步骤:
(1)、清理:对外氮屏6进行除油除污处理,之后进行洁净度检查;
(2)、喷砂:对外氮屏6的铜喷涂区进行喷砂处理,保证铜的结合强度,喷砂完成后对喷砂区域进行粗糙度检测,保证粗糙度Ra不低于12.5;
(3)、装夹:将外氮屏6夹持在底座1两端的三爪卡盘3之间;
(4)、调节角度:通过抬高或降低角度调节杆5中调节杆51,再利用高度调节定位螺母53固定调节杆51的位置,使三爪卡盘3达到与外氮屏的弯度要求相适配的倾斜角度;
(5)、喷涂:平稳低速回转外氮屏,采用超音速火焰喷涂枪7(Intelli-Jet HVAF超音速火焰喷涂系统中的超音速火焰喷涂枪)对外氮屏的铜喷涂区进行全面喷涂,超音速火焰喷涂的工艺参数为,燃气:丙烯,一级73psi,二级43psi;助燃:空气,85psi;送粉:157g/min;铜粉:平均粒径38μm;喷距:350-400mm;底层:NiCr过渡,厚数10μm;
(6)、检测:使用卡尺、测厚仪、放大镜等对涂层宽度、厚度和有无缺陷等进行检测;在外氮屏末端取样件,进行结合面的拉伸强度实验,检测涂层结合强度;对外氮屏进行冷热冲击实验,验证结合质量,具体做法是先升温至200℃然后再急速降温至-183℃,并进行重复循环实验30次;采用放大镜检测涂层有无脱落、裂纹、分层以及翘边等缺陷。
约250条完成的铜环状斑马带以及热导率和热震试验样品进行了检验。结果表明:除了涂层厚度(0.45-0.65mm)外,其他验收指标均满足要求。厚度偏厚0.15mm,均匀性控制尚可(±0.1mm),应该不影响实际使用。另外,涂层平均结合强度达到了55MPa,提供了很好的耐热震性能,喷涂时的基体温度控制在147℃以下,对外氮屏的变形影响很小。
以上所述仅是本发明的优选实施方式,本发明的保护范围并不仅局限于上述实施例,凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理前提下的若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (3)
1.一种外氮屏铜喷涂工装,其特征在于:包括底座,底座两端对称设有三爪卡盘安装杆,三爪卡盘的底部通过连接杆铰接在三爪卡盘安装杆上,三爪卡盘安装杆的后侧设有角度调节杆,角度调节杆包括插设在底座中的调节杆以及位于调节杆上的U型耳座,调节杆伸出底座的上下端均设有高度调节定位螺母,三爪卡盘的正面设有用于夹持外氮屏端部的卡爪,三爪卡盘的背面设有铰接在U型耳座中的耳片,底座外设有可沿外氮屏轴向方向进行旋转喷涂的超音速火焰喷涂枪。
2.一种外氮屏铜喷涂工艺,使用如权利要求1所述外氮屏铜喷涂工装进行外氮屏的铜喷涂,其特征在于:包括以下步骤:
(1)、清理:对外氮屏进行除油除污处理;
(2)、喷砂:对外氮屏的铜喷涂区进行喷砂处理,喷砂完成后对喷砂区域进行粗糙度检测,保证粗糙度Ra不低于12.5;
(3)、装夹:将外氮屏夹持在底座两端的三爪卡盘之间;
(4)、调节角度:调整角度调节杆,使三爪卡盘达到与外氮屏的弯度要求相适配的倾斜角度;
(5)、喷涂:平稳低速回转外氮屏,采用超音速火焰喷涂枪对外氮屏的铜喷涂区进行全面喷涂;
(6)、检测。
3.根据权利要求2所述的外氮屏铜喷涂工艺,其特征在于:所述步骤(5)中,超音速火焰喷涂的工艺参数为,燃气:丙烯,一级73psi,二级43psi;助燃:空气,85psi;送粉:157g/min;铜粉:平均粒径38μm;喷距:350-400mm;底层:NiCr过渡,厚数10μm。
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