CN106634411A - 一种渣浆泵过流部件表面环氧树脂修补工艺 - Google Patents

一种渣浆泵过流部件表面环氧树脂修补工艺 Download PDF

Info

Publication number
CN106634411A
CN106634411A CN201611011177.7A CN201611011177A CN106634411A CN 106634411 A CN106634411 A CN 106634411A CN 201611011177 A CN201611011177 A CN 201611011177A CN 106634411 A CN106634411 A CN 106634411A
Authority
CN
China
Prior art keywords
flow passage
passage component
epoxy resin
slurry
coating
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
Application number
CN201611011177.7A
Other languages
English (en)
Inventor
张达明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Mingsheng Textile Machinery Co Ltd
Original Assignee
Wuxi Mingsheng Textile Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuxi Mingsheng Textile Machinery Co Ltd filed Critical Wuxi Mingsheng Textile Machinery Co Ltd
Priority to CN201611011177.7A priority Critical patent/CN106634411A/zh
Publication of CN106634411A publication Critical patent/CN106634411A/zh
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • 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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D115/00—Coating compositions based on rubber derivatives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • 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
    • B05D2504/00—Epoxy polymers
    • 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
    • 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
    • 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
    • C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
    • 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
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

本发明公开了一种渣浆泵过流部件表面环氧树脂修补工艺，其包括：(1)对待修补过流部件表面进行喷砂粗化；(2)将所述喷砂粗化后的过流部件表面用丙酮和乙醇洗涤，干燥；(3)按照硬质TiN陶瓷颗粒占20‑65wt％、高密度聚乙烯纤维2‑10wt％和端羟基液体橡胶改性环氧树脂余量的配比，制成浆料并混合均匀；(4)将所述浆料均匀涂抹在干燥后的待修补过流部件表面，90‑130℃下干燥，得到多涂层防腐蚀层。本发明所述修补后的过流部件，经冲蚀速度为10m/s、冲蚀角为70°、冲蚀时间为连续48小时连续冲蚀磨损后，其体积磨损量只是不添加涂层的过流部件的20％左右，同时整个填补的涂层表面完整，没有剥离现象。

Description

一种渣浆泵过流部件表面环氧树脂修补工艺
技术领域
本发明涉及材料技术领域，尤其涉及一种渣浆泵过流部件表面环氧树脂修补工艺。
背景技术
离心式渣浆泵磨粒磨损及腐蚀性磨蚀离心式渣浆泵过流部件多采用韧性材料，其水流动力学磨粒磨损是由微切削磨损和变形磨损组成的复合磨损。离心式渣浆泵正常运转过程中，流经于过流部件的液圊两相浆体的流态是紊流状态，浆体中固体颗粒(煤、矸石、磁铁矿粉)的形状处于随机取向。
以小角度冲击过流部件表面的固体颗粒，以尖角与表面接触时，在接触点很小的面积上将产生很高的冲击压力，冲击压力的垂直分量使固体颗粒压人材料表面，冲击压力的水平分量使其沿大致平行于过流部件表面的方向移动，使材料表面接触点产生横向塑性变形，从而切出一定量的微体积材料，造成过流部件的微切削磨损。
以大冲角冲击过流部件表面的固体颗粒在冲击压力的垂直分量作用下，使固体颗粒压人材料表面形成弹塑性变形，到颗粒停止压入运动为止，最终形成不能恢复的塑性变形-冲击凹坑，在凹坑边缘有塑性变形挤出的材料堆积物。冲击坑边缘堆积物将重新受挤压变形和移位而从材料表面剥落，引起一定量的微体积材料损失，造成过流部件的变形磨损。
同时，由于渣浆泵处理的流体中含有各种腐蚀性液体，因此会在过流部件表面腐蚀造成凹痕、腐蚀面等。
发明内容
本发明的目的在于提出一种渣浆泵过流部件表面环氧树脂修补工艺，能够将所述过流部件表面进行修补。
为达此目的，本发明采用以下技术方案：
一种渣浆泵过流部件表面环氧树脂修补工艺，其包括：
(1)对待修补过流部件表面进行喷砂粗化；
(2)将所述喷砂粗化后的过流部件表面用丙酮和乙醇洗涤，干燥；
(3)按照硬质TiN陶瓷颗粒占20-65wt％、高密度聚乙烯纤维2-10wt％和端羟基液体橡胶改性环氧树脂余量的配比，制成浆料并混合均匀；
(4)将所述浆料均匀涂抹在干燥后的待修补过流部件表面，90-130℃下干燥，得到熔覆于过流部件表面TiN-高密度聚乙烯纤维掺杂的端羟基液体橡胶改性环氧树脂耐磨耐腐蚀涂层的多涂层防腐蚀层。
本发明通过在被腐蚀被磨蚀的过流部件表面涂覆一层浆料，所述浆料填补各种腐蚀凹坑或者裂隙，并在整个过流部件表面形成光滑的外表。通过激光强化，干燥后的浆料中TiN陶瓷颗粒、高密度聚乙烯纤维和环氧树脂将所述凹坑和裂隙填补平整。未有腐蚀或磨损的部位，也被TiN陶瓷颗粒、高密度聚乙烯纤维和环氧树脂干燥形成硬化涂层，起到保护作用。
本发明采用含端基官能团的液体橡胶改性环氧树脂，提高了两者的相容性，并形成互穿网络结构或半互穿网络结构，由于端基官能团液体橡胶含有丁二烯长链，其本身具有较好的柔韧性，因此本发明采用的改性环氧树脂具有韧性，因此其制备得到的非金属涂层韧性好，硬度高，克服了传统涂层硬度与韧性不能兼顾的缺陷。
本发明所述的端羟基液体橡胶改性环氧树脂的制备方法是本领域的现有技术，本领域技术人员可以在现有技术范围内进行选择。典型但非限制性的实例如下：
先将端羟基聚丁二烯液体橡胶或端羟基聚丁二烯/丙烯腈液体橡胶与多异氰酸酯反应制取多异氰酸酯聚丁二烯液体橡胶预聚物或多异氰酸酯聚丁二烯/丙烯腈液体橡胶预聚物，然后将所述预聚物与环氧树脂反应，制备得到端羟基液体橡胶改性环氧树脂。
本发明采用的端羟基液体橡胶改性环氧树脂，其将端羟基聚丁二烯液体橡胶引入环氧树脂的交联网络中，起到增韧作用，由于端羟基液体橡胶与各种改性组分之间以化学键结合，不仅可以保留环氧树脂与金属之间的高粘结性能，而且又具有液体橡胶的高柔韧性，由此得到的端羟基液体橡胶改性环氧树脂具备柔韧性与硬度的统一。
优选的，TiN陶瓷颗粒占30-40wt％，进一步优选35wt％。
优选的，本发明所述的改性环氧树脂中，掺杂有固化剂等添加剂。
所述固化剂的含量，只要能起到固化作用即可，一般稍微过量，但不会过量20％。
所述修补后的过流部件，经冲蚀速度为10m/s、冲蚀角为70°、冲蚀时间为连续48小时连续冲蚀磨损后，其体积磨损量只是不添加涂层的过流部件的20％左右，同时整个填补的涂层表面完整，没有剥离现象。
具体实施方式
下面通过具体实施方式来进一步说明本发明的技术方案。
实施例1
一种渣浆泵过流部件表面环氧树脂修补工艺，其包括：
(1)对待修补过流部件表面进行喷砂粗化；
(2)将所述喷砂粗化后的过流部件表面用丙酮和乙醇洗涤，干燥；
(3)按照硬质TiN陶瓷颗粒占20wt％、高密度聚乙烯纤维2wt％和端羟基液体橡胶改性环氧树脂余量的配比，制成浆料并混合均匀；
(4)将所述浆料均匀涂抹在干燥后的待修补过流部件表面，90℃下干燥，得到熔覆于过流部件表面TiN-高密度聚乙烯纤维掺杂的端羟基液体橡胶改性环氧树脂耐磨耐腐蚀涂层的多涂层防腐蚀层。
实施例2
一种渣浆泵过流部件表面环氧树脂修补工艺，其包括：
(1)对待修补过流部件表面进行喷砂粗化；
(2)将所述喷砂粗化后的过流部件表面用丙酮和乙醇洗涤，干燥；
(3)按照硬质TiN陶瓷颗粒占65wt％、高密度聚乙烯纤维10wt％和端羟基液体橡胶改性环氧树脂余量的配比，制成浆料并混合均匀；
(4)将所述浆料均匀涂抹在干燥后的待修补过流部件表面，130℃下干燥，得到熔覆于过流部件表面TiN-高密度聚乙烯纤维掺杂的端羟基液体橡胶改性环氧树脂耐磨耐腐蚀涂层的多涂层防腐蚀层。
实施例3
一种渣浆泵过流部件表面环氧树脂修补工艺，其包括：
(1)对待修补过流部件表面进行喷砂粗化；
(2)将所述喷砂粗化后的过流部件表面用丙酮和乙醇洗涤，干燥；
(3)按照硬质TiN陶瓷颗粒占35wt％、高密度聚乙烯纤维7wt％和端羟基液体橡胶改性环氧树脂余量的配比，制成浆料并混合均匀；
(4)将所述浆料均匀涂抹在干燥后的待修补过流部件表面，100℃下干燥，得到熔覆于过流部件表面TiN-高密度聚乙烯纤维掺杂的端羟基液体橡胶改性环氧树脂耐磨耐腐蚀涂层的多涂层防腐蚀层。
实施例1-3所述修补后的过流部件，经冲蚀速度为10m/s、冲蚀角为70°、冲蚀时间为连续48小时连续冲蚀磨损后，其体积磨损量只是不添加涂层的过流部件的20％左右，同时整个填补的涂层表面完整，没有剥离现象。

Claims (2)

1.一种渣浆泵过流部件表面环氧树脂修补工艺，其包括：
(1)对待修补过流部件表面进行喷砂粗化；
(2)将所述喷砂粗化后的过流部件表面用丙酮和乙醇洗涤，干燥；
(3)按照硬质TiN陶瓷颗粒占20-65wt％、高密度聚乙烯纤维2-10wt％和端羟基液体橡胶改性环氧树脂余量的配比，制成浆料并混合均匀；
(4)将所述浆料均匀涂抹在干燥后的待修补过流部件表面，90-130℃下干燥，得到熔覆于过流部件表面TiN-高密度聚乙烯纤维掺杂的端羟基液体橡胶改性环氧树脂耐磨耐腐蚀涂层的多涂层防腐蚀层。
2.如权利要求1所述的渣浆泵过流部件表面修补工艺，其特征在于，TiN陶瓷颗粒占30-40wt％，进一步优选35wt％。
CN201611011177.7A 2016-11-17 2016-11-17 一种渣浆泵过流部件表面环氧树脂修补工艺 Pending CN106634411A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611011177.7A CN106634411A (zh) 2016-11-17 2016-11-17 一种渣浆泵过流部件表面环氧树脂修补工艺

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611011177.7A CN106634411A (zh) 2016-11-17 2016-11-17 一种渣浆泵过流部件表面环氧树脂修补工艺

Publications (1)

Publication Number Publication Date
CN106634411A true CN106634411A (zh) 2017-05-10

Family

ID=58807235

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611011177.7A Pending CN106634411A (zh) 2016-11-17 2016-11-17 一种渣浆泵过流部件表面环氧树脂修补工艺

Country Status (1)

Country Link
CN (1) CN106634411A (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111230094A (zh) * 2020-02-25 2020-06-05 山东博选矿物资源技术开发有限公司 齿辊式破碎机齿帽与齿座匹配修补浆料及修补工艺
CN113198707A (zh) * 2021-05-13 2021-08-03 云南云天化红磷化工有限公司 一种磷石膏渣浆泵过流部件表面修复的方法
CN115584468A (zh) * 2022-09-30 2023-01-10 青岛国工高新材料有限公司 一种抗冲击涂层及具有该涂层的人防设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016047458A1 (ja) * 2014-09-22 2016-03-31 荒川化学工業株式会社 塗料用変性エポキシ樹脂および一液・ラッカー型塗料
CN105505111A (zh) * 2015-12-16 2016-04-20 襄阳市百盾防护涂层材料有限公司 渣浆泵磨损修复耐磨涂层材料

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016047458A1 (ja) * 2014-09-22 2016-03-31 荒川化学工業株式会社 塗料用変性エポキシ樹脂および一液・ラッカー型塗料
CN105505111A (zh) * 2015-12-16 2016-04-20 襄阳市百盾防护涂层材料有限公司 渣浆泵磨损修复耐磨涂层材料

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
周大纲等: "《土工合成材料制造技术及性能》", 31 March 2001 *
徐甲强等: "《材料合成化学与合成实例》", 28 February 2015 *
胡少坤等: "端羟基液体丁腈橡胶改性环氧树脂的结构与性能", 《合成橡胶工业》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111230094A (zh) * 2020-02-25 2020-06-05 山东博选矿物资源技术开发有限公司 齿辊式破碎机齿帽与齿座匹配修补浆料及修补工艺
CN113198707A (zh) * 2021-05-13 2021-08-03 云南云天化红磷化工有限公司 一种磷石膏渣浆泵过流部件表面修复的方法
CN115584468A (zh) * 2022-09-30 2023-01-10 青岛国工高新材料有限公司 一种抗冲击涂层及具有该涂层的人防设备

Similar Documents

Publication Publication Date Title
Qiu et al. Research on cavitation erosion and wear resistance performance of coatings
CN106634411A (zh) 一种渣浆泵过流部件表面环氧树脂修补工艺
KR101431358B1 (ko) 방식 도료 조성물 및 그 제조 방법 및 강재의 방식 방법
CN105176324A (zh) 一种耐磨抗冲击的防腐涂层及其施工方法
CN102294870B (zh) 一种螺旋输送机壳体内壁及螺旋叶片耐磨环氧涂层
CN108148461A (zh) 具有周期性结构中涂的吸波涂层及其制备方法
CN106543781A (zh) 一种渣浆泵过流部件表面环氧树脂修补工艺
CN106519902A (zh) 一种渣浆泵过流部件表面环氧树脂修补工艺
US20230234097A1 (en) Coated fluid handling components and methods for protecting and extending the service life of fluid handling components
CN106497336A (zh) 一种渣浆泵过流部件表面修补工艺
CN105778704A (zh) 一种柔性厚涂无溶剂环氧煤沥青涂料及制造方法
CN108659674B (zh) 一种用于渣浆泵过流部件的修补浆料
CN104212307A (zh) 一种稳定带锈防腐涂料及其制备方法
CN110257827A (zh) 金属构件涂漆前填补凹坑的方法
CN106634412A (zh) 一种渣浆泵过流部件表面环氧树脂修补工艺
CN112724790A (zh) 聚硫化合物改性环氧涂层及沿海电厂钢结构防腐工艺
CN112143344A (zh) 一种修复渣浆泵过流部件的耐磨涂层材料
CN101942261A (zh) 一种紫外光固化涂料
CN106700822A (zh) 一种渣浆泵过流部件表面修补工艺
CN106637191A (zh) 一种渣浆泵过流部件修补工艺
CN106346191A (zh) 一种渣浆泵过流部件修补工艺
CN106435575A (zh) 一种渣浆泵过流部件修补工艺
AU681513B2 (en) Coating for tube bases and coolant tubes of heat exchangers
CN105483560B (zh) 煤矿液压支架立柱内孔表面用不锈钢防护涂层及涂覆工艺
CN213540812U (zh) 一种用于渣浆泵叶轮表面的耐冲蚀修复涂层

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170510