WO2019214428A1 - 一种研磨辅助激光熔覆送粉器 - Google Patents

一种研磨辅助激光熔覆送粉器 Download PDF

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Publication number
WO2019214428A1
WO2019214428A1 PCT/CN2019/083831 CN2019083831W WO2019214428A1 WO 2019214428 A1 WO2019214428 A1 WO 2019214428A1 CN 2019083831 W CN2019083831 W CN 2019083831W WO 2019214428 A1 WO2019214428 A1 WO 2019214428A1
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grinding
powder
laser cladding
disc
middle section
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PCT/CN2019/083831
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English (en)
French (fr)
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简明德
简慈萱
黄炜盛
简嘉谊
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福建工程学院
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Publication of WO2019214428A1 publication Critical patent/WO2019214428A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer

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  • the invention relates to a laser cladding technology, in particular to a grinding auxiliary laser cladding powder feeder.
  • Laser cladding is a new surface modification technology that coats the surface of the substrate to improve the performance of the substrate.
  • the cladding material WC can improve the hardness and wear resistance of the substrate due to its characteristics, but its properties are brittle and often require the addition of reinforcement to assist.
  • the disadvantage of the prior art is that a large amount of work is required on the mixing uniformity and powder agglomeration of the composite powder before the composite powder is subjected to cladding, resulting in a long time before the cladding, a long cycle and a low efficiency.
  • the present invention is to solve the above technical problems, and to provide a grinding assisted laser cladding powder feeder.
  • the present invention is implemented as follows:
  • a grinding auxiliary laser cladding powder feeder comprising a box body, a powder feeding tube, a rotating upper disc and a grinding lower disc, wherein the box body is divided into an upper opening, a middle section and a lower opening, and the powder feeding tube is disposed in the An upper opening and an inner portion of the upper portion of the middle portion, the rotating upper disk and the grinding lower disk are disposed in the middle portion, and the grinding lower disk is fixedly coupled to the inner wall of the middle portion, and the rotating upper disk acts on the inner wall
  • the lower disc is ground, and the rotating upper disc and the grinding lower disc are each provided with a plurality of through holes.
  • an induction heating coil is further included, and the induction heating coil is disposed around the rotating upper disk or the powder feeding tube.
  • an oscillator is further included, the oscillator is fixedly disposed on an inner wall of the middle section and located below the grinding lower disk, and the plurality of mesh holes are disposed on the oscillator.
  • a flow meter is also included that controls the flow of powder into the mill.
  • a controller is further included, the controller controlling the oscillator and the flow meter.
  • the size of the mesh on the oscillator is twice the unit size of the ground powder.
  • the size of the through hole of the ground disk is 0.7-0.8 times the unit size of the ground powder.
  • the through hole of the rotating upper disk is larger than the unit size of the powder to be ground.
  • an intake hole is further included, and the intake hole is provided in the lower opening.
  • the upper opening is narrower than the lower opening, and the middle section is large in volume; the lower end of the powder feeding tube is disposed above the rotating upper disk.
  • the lower end of the powder feeding tube is disposed above the rotating upper plate to reduce the powder activity space to ensure the powder is ground.
  • Figure 1 is a schematic view showing the connection of the device of the present invention.
  • a grinding auxiliary laser cladding powder feeder includes a casing 1 , a powder feeding tube 2 , a rotating upper disc 3 , a grinding lower disc 4 , an induction heating coil 5 , an oscillator 6 , a flow meter 7 , a controller (not shown) and an air inlet hole 8, the casing 1 being divided into an upper opening 11, a middle portion 12 and a lower opening 13, the upper opening 11 being narrower than the lower opening 13, the middle portion 12 volume
  • the powder feeding pipe 2 is disposed inside the upper opening 11 and the upper portion of the middle section 12, and the lower end of the powder feeding pipe 2 is disposed above the rotating upper disk 3; 3 and the grinding lower disc 4 is disposed in the middle section 12, and the grinding lower disc 4 is fixedly coupled to the inner wall of the middle section 12, and the rotating upper disc 3 acts on the grinding lower disc 4, the rotating upper disc 3 and the grinding lower disc 4 are respectively provided with a plurality of through holes 9, the through holes 9 of the rotating upper disc 3 are larger than the unit size
  • the induction heating coil 5 is disposed around the rotating upper disc 3 or the powder feeding tube 2, and the oscillator 6 is fixedly disposed in the middle section
  • An inner wall of 12 is located below the grinding lower disc 4, and the oscillator 6 is provided with a plurality of screen openings 10, and the screen opening 10 on the oscillator 6 is twice the size of the unit of the ground powder;
  • the flow meter 7 controls the flow rate of the powder entering the grinding; the controller (not shown) controls the oscillator 6 and the flow meter 7; the intake port 8 is disposed in the lower opening 13.
  • Step 1 Turn on the induction heater and heat to 100-200 °C.
  • Step 2 Add various powders to be ground from the powder feeding tube 2; control the flow rate of the powder into the grinding by the flow meter 7.
  • Step 3 open the drive, turn the upper disc 3 to start rotating; turn on the oscillator 6;
  • the powder enters from the powder feeding tube 2, and is grounded by rotating the through hole 9 of the upper tray 3 to the intermediate position between the rotating upper tray 3 and the grinding lower tray 4, and when the powder is sufficiently refined, the powder is rotated from the rotation of the upper tray 3 by grinding.
  • the through hole 9 of the lower tray 4 falls to the oscillator 6, and the oscillator 6 oscillates and filters the ground mixed powder again, and also makes the ground powder more uniform when the powder is finished; the oscillated powder continues to fall to the lower Opening 13.
  • Step 4 The inert gas is escorted through the air inlet to cause the powder to leave the next stage of the laser cladding faster.
  • step 2 and step 3 The order of action of step 2 and step 3 is adjustable; the inert gas can also be used when the powder feeding tube 2 is used for powder feeding, and the powder is rushed to enter the upper part of the rotating upper disc 3; the parameters of the flow meter 7 and the oscillator 6 pass through the controller ( The figure is unobstructed and adjustable to make the use of the present invention more flexible.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crushing And Grinding (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Laser Beam Processing (AREA)

Abstract

本发明提供一种研磨辅助激光熔覆送粉器，包括箱体、送粉管、转动上盘以及研磨下盘，所述箱体分为上开口、中段以及下开口，所述送粉管设置在所述上开口与所述中段的上部的内部，所述转动上盘以及研磨下盘设置在所述中段内，且所述研磨下盘固定连接所述中段的内壁，所述转动上盘作用于所述研磨下盘，所述转动上盘与所述研磨下盘均设置复数个通孔；本发明的优点在于：1、通过对复合粉末的研磨，解决复合粉末混合不均与粉末团积的问题；2、增设感应加热线圈，提高混合粉末的干燥度，利于解决粉末团积的问题；3、增设振荡器，对研磨完毕的混合粉末再次进行振荡混合和筛选，同时也让研磨完毕的粉末下粉时更加均匀。

Description

一种研磨辅助激光熔覆送粉器 技术领域
本发明涉及一种激光熔覆技术，特别指一种研磨辅助激光熔覆送粉器。
背景技术
激光熔覆，是一种新的表面改性技术，在基材表面熔覆材料，从而达到提高基材性能的目的。
目前，激光熔覆的熔覆层材料有许多种，例如陶瓷粉末，各类镍基合金铁基合金等，但是单种类型的粉末往往难以满足熔覆要求。例如熔覆材料WC因其特性可以使得基体提高硬度和耐磨性，但其性质脆，往往需要加入增强项进行辅助。
现有技术的缺点是：复合粉末进行熔覆前都需要对复合粉末的混合均匀度与粉末团积问题进行大量的工作，导致熔覆前期耗时久，每次熔覆周期长、效率低下。
发明内容
本发明要解决上述技术问题，在于提供一种研磨辅助激光熔覆送粉器。
本发明是这样实现的：
一种研磨辅助激光熔覆送粉器，包括箱体、送粉管、转动上盘以及研磨下盘，所述箱体分为上开口、中段以及下开口，所述送粉管设置在所述上开口与所述中段的上部的内部，所述转动上盘以及研磨下盘设置在所述中段内，且所述研磨下盘固定连接所述中段的内壁，所述转动上盘作用于所述研磨下盘，所述转动上盘与所述研磨下盘均设置复数个通孔。
优选地，还包括感应加热线圈，所述感应加热线圈环绕所述转动上盘或所述送粉管设置。
优选地，还包括振荡器，所述振荡器固定设置在所述中段的内壁且位于所述研磨下盘的下方，所述振荡器上设置复数个筛孔。
优选地，还包括流量计，所述流量计控制进入研磨的粉末流量。
优选地，还包括控制器，所述控制器控制所述振荡器与所述流量计。
优选地，所述振荡器上的筛孔大小为被研磨粉末单位大小的两倍。
优选地，所述研磨下盘的通孔大小为被研磨粉末单位大小的0.7-0.8倍。
优选地，所述转动上盘的通孔大于被研磨粉末的单位大小。
优选地，还包括进气孔，所述进气孔设置在所述下开口。
优选地，所述上开口与所述下开口窄小，所述中段容积大；所述送粉管的下端罩设于所述转动上盘的上方。
本发明具有如下优点：
1、通过对复合粉末的研磨，解决复合粉末混合不均与粉末团积的问题。
2、增设感应加热线圈，提高混合粉末的干燥度，利于解决粉末团积的问题。
3、增设振荡器，对研磨完毕的混合粉末再次进行振荡混合和筛选，同时也让研磨 完毕的粉末下粉时更加均匀。
4、增设流量计，控制复合粉末进入研磨的流量。
5、增设控制器，让流量计与振荡器的参数可调，使本发明的使用更加灵活。
6、增设进气口，惰性气体通过进气口对研磨完毕的粉末进行押送，使粉末更快离开本发明。
7、送粉管的下端罩设与所述转动上盘的上方，减小粉末活动空间，确保粉末进行研磨。
附图说明
下面参照附图结合实施例对本发明作进一步的说明。
图1为本发明的装置连接示意图。
符号说明如下：
箱体1；上开口11；中段12；下开口13；送粉管2；转动上盘3；研磨下盘4；感应加热线圈5；振荡器6；流量计7；进气孔8；通孔9；筛孔10。
具体实施方式
如图1所示，一种研磨辅助激光熔覆送粉器，包括箱体1、送粉管2、转动上盘3、研磨下盘4、感应加热线圈5、振荡器6、流量计7、控制器(图未视)以及进气孔8，所述箱体1分为上开口11、中段12以及下开口13，所述上开口11与所述下开口13窄小，所述中段12容积大；所述送粉管2设置在所述上开口11与所述中段12的上部的内部，所述送粉管2的下端罩设于所述转动上盘3的上方；所述转动上盘3以及研磨下盘4设置在所述中段12内，且所述研磨下盘4固定连接所述中段12的内壁，所述转动上盘3作用于所述研磨下盘4，所述转动上盘3与所述研磨下盘4均设置复数个通孔9，所述转动上盘3的通孔9大于被研磨粉末的单位大小，所述研磨下盘4的通孔9大小为被研磨粉末单位大小的0.7-0.8倍；所述感应加热线圈5环绕所述转动上盘3或所述送粉管2设置，所述振荡器6固定设置在所述中段12的内壁且位于所述研磨下盘4的下方，所述振荡器6上设置复数个筛孔10，所述振荡器6上的筛孔10大小为被研磨粉末单位大小的两倍；所述流量计7控制进入研磨的粉末流量；所述控制器(图未视)控制所述振荡器6与所述流量计7；所述进气孔8设置在所述下开口13。
本发明的运行步骤如下：
步骤1、打开感应加热器，加热至100-200℃。
步骤2、从送粉管2添加需要研磨的各种粉末；通过流量计7控制粉末进入研磨的流量。
步骤3、打开驱动器，转动上盘3开始转动；打开振荡器6；
粉末从送粉管2进入，经由转动上盘3的通孔9下落至转动上盘3与研磨下盘4的中间位置进行研磨，当粉末足够细化，粉末通过转动上盘3的转动从研磨下盘4的通孔9下落至振荡器6，振荡器6对研磨完毕的混合粉末再次进行振荡混合和筛选，同时也让研磨完毕的粉末下粉时更加均匀；振荡完毕的粉末继续下落至下开口13。
步骤4、惰性气体通过进气口对研磨完毕的粉末进行押送，使粉末更快离开本发明进入激光熔覆的下一阶段。
步骤2与步骤3作用顺序可调；惰性气体也可运用在送粉管2进行送粉时，押送粉末更快进入转动上盘3的上方；流量计7与振荡器6的参数通过控制器(图未视)可调，使本发明的使用更加灵活。
虽然以上描述了本发明的具体实施方式，但是熟悉本技术领域的技术人员应当理解，我们所描述的具体的实施例只是说明性的，而不是用于对本发明的范围的限定，熟悉本领域的技术人员在依照本发明的精神所作的等效的修饰以及变化，都应当涵盖在本发明的权利要求所保护的范围内。

Claims (10)

  1. 一种研磨辅助激光熔覆送粉器，其特征在于：包括箱体、送粉管、转动上盘以及研磨下盘，所述箱体分为上开口、中段以及下开口，所述送粉管设置在所述上开口与所述中段的上部的内部，所述转动上盘以及研磨下盘设置在所述中段内，且所述研磨下盘固定连接所述中段的内壁，所述转动上盘作用于所述研磨下盘，所述转动上盘与所述研磨下盘均设置复数个通孔。
  2. 根据权利要求1所述的一种研磨辅助激光熔覆送粉器，其特征在于：还包括感应加热线圈，所述感应加热线圈环绕所述转动上盘或所述送粉管设置。
  3. 根据权利要求1所述的一种研磨辅助激光熔覆送粉器，其特征在于：还包括振荡器，所述振荡器固定设置在所述中段的内壁且位于所述研磨下盘的下方，所述振荡器上设置复数个筛孔。
  4. 根据权利要求1所述的一种研磨辅助激光熔覆送粉器，其特征在于：还包括流量计，所述流量计控制进入研磨的粉末流量。
  5. 根据权利要求3或4所述的一种研磨辅助激光熔覆送粉器，其特征在于：还包括控制器，所述控制器控制所述振荡器与所述流量计。
  6. 根据权利要求3所述的一种研磨辅助激光熔覆送粉器，其特征在于：所述振荡器上的筛孔大小为被研磨粉末单位大小的两倍。
  7. 根据权利要求1所述的一种研磨辅助激光熔覆送粉器，其特征在于：所述研磨下盘的通孔大小为被研磨粉末单位大小的0.7-0.8倍。
  8. 根据权利要求1所述的一种研磨辅助激光熔覆送粉器，其特征在于：所述转动上盘的通孔大于被研磨粉末的单位大小。
  9. 根据权利要求1所述的一种研磨辅助激光熔覆送粉器，其特征在于：还包括进气孔，所述进气孔设置在所述下开口。
  10. 根据权利要求1所述的一种研磨辅助激光熔覆送粉器，其特征在于：所述上开口与所述下开口窄小，所述中段容积大；所述送粉管的下端罩设于所述转动上盘的上方。
PCT/CN2019/083831 2018-05-10 2019-04-23 一种研磨辅助激光熔覆送粉器 WO2019214428A1 (zh)

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