WO2023077300A1 - Method for modifying surface performance of lightweight alloy - Google Patents

Method for modifying surface performance of lightweight alloy Download PDF

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Publication number
WO2023077300A1
WO2023077300A1 PCT/CN2021/128405 CN2021128405W WO2023077300A1 WO 2023077300 A1 WO2023077300 A1 WO 2023077300A1 CN 2021128405 W CN2021128405 W CN 2021128405W WO 2023077300 A1 WO2023077300 A1 WO 2023077300A1
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WO
WIPO (PCT)
Prior art keywords
plate
modified
groove
lightweight
lightweight alloy
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PCT/CN2021/128405
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French (fr)
Chinese (zh)
Inventor
宋娓娓
汪洪峰
葛小乐
姜迪
蒲家飞
董旗
刘胜荣
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黄山学院
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Priority to PCT/CN2021/128405 priority Critical patent/WO2023077300A1/en
Priority to BE20225489A priority patent/BE1029105B1/en
Publication of WO2023077300A1 publication Critical patent/WO2023077300A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/002—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/04—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a rolling mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1275—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding involving metallurgical change
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/16—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating with interposition of special material to facilitate connection of the parts, e.g. material for absorbing or producing gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
    • B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
    • B22F2007/042—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal characterised by the layer forming method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/18—Sheet panels
    • B23K2101/185—Tailored blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/01—Aircraft parts

Definitions

  • the invention relates to the technical field of lightweight alloys, in particular to a method for modifying the surface performance of lightweight alloys.
  • the object of the present invention is to provide a method for modifying the performance of the surface layer of a lightweight alloy in view of the problems existing in the prior art.
  • a method for modifying the properties of the surface layer of a lightweight alloy characterized in that the steps of the method are as follows:
  • step c Add the corresponding modified powder in the groove in step a according to the modification requirements of the lightweight alloy, cover the lightweight alloy plate to be modified in step a with the cover plate in step b and the boss After one-to-one correspondence with the grooves, it is pressed into a plate with a rolling machine;
  • step d Put the plate compressed in step c into an intermediate frequency heating furnace and heat it to 380 ° C ⁇ 430 ° C, then take it out and roll it again on the rolling machine;
  • step d Put the plate rolled again in step d into the friction stir welding workbench for clamping, and then insert the stirring needle into the surface of the plate to carry out stirring modification molding;
  • the side length of the groove in the step a is 1-3 mm.
  • the distance between adjacent grooves on the surface of the lightweight alloy plate to be modified in the step a is not greater than the side length of the grooves.
  • the depth of the groove in step a is no more than 5 mm and the thickness of the boss in step b is no more than 1 mm.
  • the depth of the groove pattern in the step a is 0.5-1mm and the depth of the boss pattern in the step b is not more than 0.5mm.
  • the groove pattern in the step a and the boss pattern in the step b adopt the same pattern.
  • the groove pattern in the step a and the boss pattern in the step b adopt one of a square pattern, a rhombus pattern, or an S-shaped pattern.
  • the modified powder in the step c is a mixture of one or more of W, Ni, Ti; the uniform modified powder is evenly laid in the groove in the step a and compacted, in the step a
  • the lightweight alloy to be modified is covered with the cover plate in step b, the bosses face the inside of the groove and correspond one by one, and then pressed into a plate with a rolling machine.
  • the length of the stirring needle in step e is the sum of the thickness of the cover plate in step b and the depth of the groove in step a.
  • the stirring needle in the step e is inclined 1°-3° relative to the surface layer of the board.
  • the present invention has the following advantages:
  • the method of the present invention adds relevant metal powder inside the lightweight alloy, and then makes the added metal powder semi-melted by means of medium frequency heating, etc., and then forms a modified surface layer by rolling and stirring, and then removes it by grinding.
  • the burrs and flashes on the surface can obtain the best lightweight alloy modified surface; this method can realize the modification of the lightweight alloy surface with various performance requirements, the cost is low, and it is easy to popularize and apply.
  • a method for modifying the performance of the surface layer of a lightweight alloy the steps of which are: a. milling several grooves on the surface of the lightweight alloy plate to be modified, the side length of the groove is 1-3mm and the distance between adjacent grooves is The distance between them is not greater than the side length of the groove, the depth of the groove is not more than 5mm, and the bottom of the groove will be engraved with a square pattern (or one of diamond pattern, S-shaped pattern and other various patterns). The depth is 0.5 ⁇ 1mm; b.
  • the thickness of the cover plate is not more than 2mm, and mill out a boss with the same size as the groove in step a on its surface,
  • the thickness of the boss is 1mm and the boss is also engraved with a square pattern (or diamond pattern, S-shaped pattern and other various patterns), and the depth of the boss pattern does not exceed 0.5mm; c.
  • a method for modifying the performance of the surface layer of a lightweight alloy the steps of which are: a. Milling several grooves on the surface of the lightweight alloy plate to be modified, the side length of the grooves is 2mm and the distance between adjacent grooves The spacing is 1.5cm, the depth of the groove is 4mm, the bottom of the groove will be engraved with a square pattern, and the depth of the groove pattern is 1mm; b. Select the cover plate with the same material as the lightweight alloy plate to be modified, and the thickness of the cover plate 2mm, and mill out a boss with the same size as the groove on its surface. The thickness of the boss is 1mm and the boss is also engraved with a square pattern. The depth of the boss pattern is 0.5mm; c.
  • a method for modifying the performance of the surface layer of a lightweight alloy the steps of which are: a. milling several grooves on the surface of the lightweight alloy plate to be modified, the side length of the groove is 2.5mm and the distance between adjacent grooves is The distance between the grooves is 2cm, the depth of the groove is 5mm, the bottom of the groove will be engraved with S-shaped patterns, and the depth of the groove pattern is 0.8mm; b. Select the cover plate with the same material as the lightweight alloy plate to be modified, cover The thickness of the plate is 1.8mm, and a boss with the same size as the groove is milled on its surface. The thickness of the boss is 1mm and the boss is also engraved with an S-shaped pattern.
  • the depth of the boss pattern is 0.45mm; c.
  • Add appropriate modified powder lay the uniformly mixed modified powder in the groove, and compact it, cover the cover plate, and the bosses are facing the inside of the groove one by one, and then use Press the rolling machine into a plate; d. Put the rolled plate into the intermediate frequency heating furnace and heat it to 390°C, then take it out and roll it again on the rolling machine; e. Put the rolled plate into the Clamp it on the friction stir welding workbench, and then insert the stirring needle (the length of the stirring needle is the sum of the thickness of the cover plate and the depth of the groove) into the surface layer of the plate for stirring and modification molding.
  • the stirring needle in the stirring head should be inclined 2.5°; f 1. Put the stirred plate on the grinder for grinding to remove flash and burrs, and finally obtain the modified lightweight alloy surface.
  • a method for modifying the performance of the surface layer of a lightweight alloy the steps of which are: a. milling several grooves on the surface of the lightweight alloy plate to be modified, the side length of the grooves is 1.5mm and the distance between adjacent grooves is The distance between the grooves is 1.2cm, the depth of the groove is 4.5mm, the bottom of the groove will be engraved with a diamond pattern, and the depth of the groove pattern is 0.8mm; b. Select the cover plate with the same material as the lightweight alloy plate to be modified, The thickness of the cover plate is 1.8mm, and a boss with the same size as the groove is milled on its surface. The thickness of the boss is 1mm and the boss is also engraved with a diamond pattern.
  • the depth of the boss pattern is 0.3mm; c.
  • Add appropriate modified powder lay the uniformly mixed modified powder in the groove, and compact it, cover the cover plate, and the bosses are facing the inside of the groove one by one, and then use Press the rolling machine into a plate; d. Put the rolled plate into the intermediate frequency heating furnace and heat it to 405°C, then take it out and roll it again on the rolling machine; e. Put the rolled plate into the Clamp it on the friction stir welding workbench, and then insert the stirring needle (the length of the stirring needle is the sum of the thickness of the cover plate and the depth of the groove) into the surface layer of the plate for stirring and modification molding.
  • the stirring needle in the stirring head should be inclined 1°; f 1. Put the stirred plate on the grinder for grinding to remove flash and burrs, and finally obtain the modified lightweight alloy surface.
  • the method of the present invention is based on the parts used by the user. Since the demand is small but the variety is diverse, the surface of the plate is slotted and filled with modified powder, and then a thin plate of the same material is covered on it. First, it is heated by intermediate frequency. Plasticize the added metal powder, then modify the surface layer by means of rolling and stirring molding, and finally remove the burrs and flashes on the surface by grinding, and finally obtain the desired modified surface layer; this method is simple and reliable , Feasible, pollution-free, and low cost, can be popularized and applied.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Metal Rolling (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

Disclosed is a method for modifying surface performance of a lightweight alloy. The method comprises the following steps: milling, on the surface of a lightweight alloy plate to be modified, a plurality of recesses engraved with recess patterns at the bottom; selecting a cover plate having the same material as the lightweight alloy plate to be modified and having a thickness of not more than 2 mm, and milling, on the surface of the cover plate, bosses engraved with boss patterns on the surface; adding corresponding modified powder into the recesses according to modification requirements of the lightweight alloy, and after the cover plate is covered, pressing the cover plate and the lightweight alloy plate into a plate by using a rolling machine; putting the plate into an intermediate frequency heating furnace, heating to 380℃-430℃, and then taking out and rolling again on the rolling machine; placing the plate on a friction stir welding workbench to be clamped, and then inserting a stirring needle into the surface layer of the plate for stirring modification molding; and placing the plate on a grinding machine for grinding, removing flashes and burrs, and finally obtaining a modified lightweight alloy surface layer. The present invention can realize lightweight alloy surface modification of various performance requirements, and is simple, reliable, feasible and low in cost.

Description

一种改性轻量化合金表层性能的方法A method for modifying the surface properties of lightweight alloys 技术领域technical field
本发明涉及轻量化合金技术领域，具体地说是一种改性轻量化合金表层性能的方法。The invention relates to the technical field of lightweight alloys, in particular to a method for modifying the surface performance of lightweight alloys.
背景技术Background technique
轻量化合金的应用越来越广泛，特别是在航空、电子、新能源汽车等制造领域应用更多，但使用的性能要求各不一样，如果每种材料都通过熔炼、轧制成型的办法，既费时又费钱，不利于轻量化合金的应用。The application of lightweight alloys is becoming more and more widespread, especially in the manufacturing fields of aviation, electronics, and new energy vehicles, but the performance requirements used are different. If each material is smelted and rolled, It is time-consuming and expensive, which is not conducive to the application of lightweight alloys.
发明内容Contents of the invention
本发明的目的是针对现有技术存在的问题，提供一种改性轻量化合金表层性能的方法。The object of the present invention is to provide a method for modifying the performance of the surface layer of a lightweight alloy in view of the problems existing in the prior art.
本发明的目的是通过以下技术方案解决的：The purpose of the present invention is solved by the following technical solutions:
一种改性轻量化合金表层性能的方法，其特征在于：该方法步骤如下：A method for modifying the properties of the surface layer of a lightweight alloy, characterized in that the steps of the method are as follows:
a、在待改性的轻量化合金板面上铣若干凹槽，且凹槽的底部刻有凹槽花纹；a. Mill a number of grooves on the surface of the lightweight alloy plate to be modified, and the bottom of the groove is engraved with a groove pattern;
b、选择与待改性的轻量化合金板材质相同的盖板且盖板厚度不超过2mm，在盖板的表面铣出与步骤a中的凹槽一一对应的凸台且凸台的厚度小于凹槽的深度，凸台表面上刻有与凹槽花纹相同的凸台花纹；b. Select a cover plate made of the same material as the lightweight alloy plate to be modified, and the thickness of the cover plate does not exceed 2mm. Mill out the bosses corresponding to the grooves in step a one-to-one on the surface of the cover plate and the thickness of the bosses Less than the depth of the groove, the surface of the boss is engraved with the same boss pattern as the groove pattern;
c、根据轻量化合金的改性需求在步骤a中的凹槽内添加对应的改性粉末，在步骤a中的待改性的轻量化合金板上盖上步骤b中的盖板且凸台与凹槽一一对应后用滚压机压紧成一板材；c. Add the corresponding modified powder in the groove in step a according to the modification requirements of the lightweight alloy, cover the lightweight alloy plate to be modified in step a with the cover plate in step b and the boss After one-to-one correspondence with the grooves, it is pressed into a plate with a rolling machine;
d、将步骤c压紧后的板材放入到中频加热炉内并加热到380℃～430℃，然后取出在滚压机上再次滚压；d. Put the plate compressed in step c into an intermediate frequency heating furnace and heat it to 380 ° C ~ 430 ° C, then take it out and roll it again on the rolling machine;
e、将步骤d再次滚压后的板材放入搅拌摩擦焊工作台上装夹好，然后将搅拌针插入板材表层进行搅拌改性成型；e. Put the plate rolled again in step d into the friction stir welding workbench for clamping, and then insert the stirring needle into the surface of the plate to carry out stirring modification molding;
f、将搅拌改性成型好的板材放在磨床上进行磨削，去除飞边与毛刺，最后获得改性后的轻量化合金表层。f. Put the modified and formed plate on the grinding machine for grinding to remove flash and burrs, and finally obtain the modified lightweight alloy surface.
所述步骤a中的凹槽的边长为1-3mm。The side length of the groove in the step a is 1-3 mm.
所述步骤a中的待改性的轻量化合金板面上的相邻凹槽之间的间距不大于凹槽的边长。The distance between adjacent grooves on the surface of the lightweight alloy plate to be modified in the step a is not greater than the side length of the grooves.
所述步骤a中的凹槽的深度不超过5mm且步骤b中的凸台的厚度不超过1mm。The depth of the groove in step a is no more than 5 mm and the thickness of the boss in step b is no more than 1 mm.
所述步骤a中的凹槽花纹的深度为0.5～1mm且步骤b中的凸台花纹的深度不超过0.5mm。The depth of the groove pattern in the step a is 0.5-1mm and the depth of the boss pattern in the step b is not more than 0.5mm.
所述步骤a中的凹槽花纹和所述步骤b中的凸台花纹采用相同的花纹。The groove pattern in the step a and the boss pattern in the step b adopt the same pattern.
所述步骤a中的凹槽花纹和所述步骤b中的凸台花纹采用方块花纹、或菱形花纹、或S 型花纹中的一种。The groove pattern in the step a and the boss pattern in the step b adopt one of a square pattern, a rhombus pattern, or an S-shaped pattern.
所述步骤c中的改性粉末为W、Ni、Ti中的一种或多种的混合；将均匀的改性粉末平整的铺设在步骤a中的凹槽中并压实，在步骤a中的待改性的轻量化合金上盖上步骤b中的盖板，凸台朝向凹槽内部且一一对应，然后用滚压机压紧成一板材。The modified powder in the step c is a mixture of one or more of W, Ni, Ti; the uniform modified powder is evenly laid in the groove in the step a and compacted, in the step a The lightweight alloy to be modified is covered with the cover plate in step b, the bosses face the inside of the groove and correspond one by one, and then pressed into a plate with a rolling machine.
所述步骤e中的搅拌针的长度为步骤b中的盖板厚度与步骤a中的凹槽深度之和。The length of the stirring needle in step e is the sum of the thickness of the cover plate in step b and the depth of the groove in step a.
所述步骤e中的搅拌针相对板材表层倾斜1°～3°。The stirring needle in the step e is inclined 1°-3° relative to the surface layer of the board.
本发明相比现有技术有如下优点：Compared with the prior art, the present invention has the following advantages:
本发明的方法通过添加相关金属粉末在轻量化合金内部，再通过中频加热等方式使添加的金属粉末半熔化状态，然后再通过滚压、搅拌最终形成改性表层，然后再利用磨削方法去除表层的毛刺、飞边，获得最佳的轻量化合金改性表层；该方法能够实现多种性能需求的轻量化合金表层改性，成本低，易于推广应用。The method of the present invention adds relevant metal powder inside the lightweight alloy, and then makes the added metal powder semi-melted by means of medium frequency heating, etc., and then forms a modified surface layer by rolling and stirring, and then removes it by grinding. The burrs and flashes on the surface can obtain the best lightweight alloy modified surface; this method can realize the modification of the lightweight alloy surface with various performance requirements, the cost is low, and it is easy to popularize and apply.
具体实施方式Detailed ways
下面结合实施例对本发明作进一步的说明。The present invention will be further described below in conjunction with embodiment.
一种改性轻量化合金表层性能的方法，其步骤为：a、在待改性的轻量化合金板面上铣若干个凹槽，凹槽的边长为1-3mm且相邻凹槽之间的间距不大于凹槽的边长，凹槽的深度不超过5mm，凹槽底部将刻有方块花纹(或菱形花纹、S型花纹以及其它各式花纹中的一种)，凹槽花纹的深度为0.5～1mm；b、选择与待改性的轻量化合金板材质相同的盖板，盖板厚度不超过2mm，并在其表面铣出与步骤a中的凹槽相同尺寸的凸台，凸台的厚度为1mm且凸台同样刻有方块花纹(或菱形花纹、S型花纹以及其它各式花纹)，凸台花纹深度不超过0.5mm；c、根据将轻量化合金需要改性的性能添加合适的改性粉末，将混合均匀的改性粉末平整的铺设在步骤a中的凹槽内，并压实，在步骤a中的待改性的轻量化合金板上盖上步骤b中的盖板，凸台朝向凹槽内部且一一对应，然后用滚压机压紧成一板材；d、将步骤c滚压好的板材放入到中频加热炉中加热到380℃～430℃(优选方案400℃～410℃)，然后取出在滚压机上再次滚压；e、将步骤d再次滚压好的板材放入搅拌摩擦焊工作台上装夹好，然后将搅拌针(搅拌针的长度为盖板厚度与凹槽深度之和)插入板材表层进行搅拌改性成型，搅拌头中的搅拌针要倾斜1°～3°；f、将搅拌好的板材放在磨床上进行磨削，去除飞边与毛刺，最后获得改性后的轻量化合金表层。A method for modifying the performance of the surface layer of a lightweight alloy, the steps of which are: a. milling several grooves on the surface of the lightweight alloy plate to be modified, the side length of the groove is 1-3mm and the distance between adjacent grooves is The distance between them is not greater than the side length of the groove, the depth of the groove is not more than 5mm, and the bottom of the groove will be engraved with a square pattern (or one of diamond pattern, S-shaped pattern and other various patterns). The depth is 0.5 ~ 1mm; b. Select the cover plate made of the same material as the lightweight alloy plate to be modified, the thickness of the cover plate is not more than 2mm, and mill out a boss with the same size as the groove in step a on its surface, The thickness of the boss is 1mm and the boss is also engraved with a square pattern (or diamond pattern, S-shaped pattern and other various patterns), and the depth of the boss pattern does not exceed 0.5mm; c. According to the performance of the lightweight alloy that needs to be modified Add suitable modified powder, lay the uniformly mixed modified powder in the groove in step a, and compact it, cover the lightweight alloy plate to be modified in step a with the The cover plate and the boss face the inside of the groove and correspond one by one, and then press it into a plate with a rolling machine; d, put the rolled plate in step c into an intermediate frequency heating furnace and heat it to 380 ° C ~ 430 ° C (preferably plan 400℃～410℃), then take it out and roll it again on the rolling machine; e, put the plate rolled again in step d into the friction stir welding workbench and clamp it, and then put the stirring needle (the length of the stirring needle (the sum of the thickness of the cover plate and the depth of the groove) is inserted into the surface of the plate for stirring and modification molding, and the stirring needle in the stirring head should be inclined by 1° to 3°; f, put the stirred plate on the grinder for grinding, remove Flash and burrs, and finally obtain a modified lightweight alloy surface.
实施例一Embodiment one
一种改性轻量化合金表层性能的方法，其步骤为：a、在待改性的轻量化合金板面上铣若干个凹槽，凹槽的边长为2mm且相邻凹槽之间的间距为1.5cm，凹槽的深度为4mm，凹槽底部将刻有方块花纹，凹槽花纹的深度为1mm；b、选择与待改性的轻量化合金板材质相同的盖板， 盖板厚度为2mm，并在其表面铣出与凹槽相同尺寸的凸台，凸台的厚度为1mm且凸台同样刻有方块花纹，凸台花纹深度为0.5mm；c、根据将轻量化合金需要改性的性能添加合适的改性粉末，将混合均匀的改性粉末平整的铺设在凹槽内，并压实，盖上盖板，凸台一一对应朝向凹槽内部，然后用滚压机压紧成一板材；d、将滚压好的板材放入到中频加热炉中加热到400℃，然后取出在滚压机上再次滚压；e、将再次滚压好的板材放入搅拌摩擦焊工作台上装夹好，然后将搅拌针(搅拌针的长度为盖板厚度与凹槽深度之和)插入板材表层进行搅拌改性成型，搅拌头中的搅拌针要倾斜2°；f、将搅拌好的板材放在磨床上进行磨削，去除飞边与毛刺，最后获得改性后的轻量化合金表层。A method for modifying the performance of the surface layer of a lightweight alloy, the steps of which are: a. Milling several grooves on the surface of the lightweight alloy plate to be modified, the side length of the grooves is 2mm and the distance between adjacent grooves The spacing is 1.5cm, the depth of the groove is 4mm, the bottom of the groove will be engraved with a square pattern, and the depth of the groove pattern is 1mm; b. Select the cover plate with the same material as the lightweight alloy plate to be modified, and the thickness of the cover plate 2mm, and mill out a boss with the same size as the groove on its surface. The thickness of the boss is 1mm and the boss is also engraved with a square pattern. The depth of the boss pattern is 0.5mm; c. Add suitable modified powder, lay the uniformly mixed modified powder in the groove, and compact it, cover the cover plate, the bosses are facing the inside of the groove one by one, and then press it with a rolling machine Tighten into a plate; d. Put the rolled plate into the intermediate frequency heating furnace and heat it to 400°C, then take it out and roll it again on the rolling machine; e. Put the rolled plate into the friction stir welding work Clamp it on the table, and then insert the stirring needle (the length of the stirring needle is the sum of the thickness of the cover plate and the depth of the groove) into the surface layer of the plate for stirring and modification molding. The stirring needle in the stirring head should be inclined at 2°; f. The plate is ground on a grinding machine to remove flash and burrs, and finally obtain a modified lightweight alloy surface.
实施例二Embodiment two
一种改性轻量化合金表层性能的方法，其步骤为：a、在待改性的轻量化合金板面上铣若干个凹槽，凹槽的边长为2.5mm且相邻凹槽之间的间距为2cm，凹槽的深度为5mm，凹槽底部将刻有S型花纹，凹槽花纹的深度为0.8mm；b、选择与待改性的轻量化合金板材质相同的盖板，盖板厚度为1.8mm，并在其表面铣出与凹槽相同尺寸的凸台，凸台的厚度为1mm且凸台同样刻有S型花纹，凸台花纹深度为0.45mm；c、根据将轻量化合金需要改性的性能添加合适的改性粉末，将混合均匀的改性粉末平整的铺设在凹槽内，并压实，盖上盖板，凸台一一对应朝向凹槽内部，然后用滚压机压紧成一板材；d、将滚压好的板材放入到中频加热炉中加热到390℃，然后取出在滚压机上再次滚压；e、将再次滚压好的板材放入搅拌摩擦焊工作台上装夹好，然后将搅拌针(搅拌针的长度为盖板厚度与凹槽深度之和)插入板材表层进行搅拌改性成型，搅拌头中的搅拌针要倾斜2.5°；f、将搅拌好的板材放在磨床上进行磨削，去除飞边与毛刺，最后获得改性后的轻量化合金表层。A method for modifying the performance of the surface layer of a lightweight alloy, the steps of which are: a. milling several grooves on the surface of the lightweight alloy plate to be modified, the side length of the groove is 2.5mm and the distance between adjacent grooves is The distance between the grooves is 2cm, the depth of the groove is 5mm, the bottom of the groove will be engraved with S-shaped patterns, and the depth of the groove pattern is 0.8mm; b. Select the cover plate with the same material as the lightweight alloy plate to be modified, cover The thickness of the plate is 1.8mm, and a boss with the same size as the groove is milled on its surface. The thickness of the boss is 1mm and the boss is also engraved with an S-shaped pattern. The depth of the boss pattern is 0.45mm; c. According to the light Quantify the performance of the alloy that needs to be modified Add appropriate modified powder, lay the uniformly mixed modified powder in the groove, and compact it, cover the cover plate, and the bosses are facing the inside of the groove one by one, and then use Press the rolling machine into a plate; d. Put the rolled plate into the intermediate frequency heating furnace and heat it to 390°C, then take it out and roll it again on the rolling machine; e. Put the rolled plate into the Clamp it on the friction stir welding workbench, and then insert the stirring needle (the length of the stirring needle is the sum of the thickness of the cover plate and the depth of the groove) into the surface layer of the plate for stirring and modification molding. The stirring needle in the stirring head should be inclined 2.5°; f 1. Put the stirred plate on the grinder for grinding to remove flash and burrs, and finally obtain the modified lightweight alloy surface.
实施例三Embodiment Three
一种改性轻量化合金表层性能的方法，其步骤为：a、在待改性的轻量化合金板面上铣若干个凹槽，凹槽的边长为1.5mm且相邻凹槽之间的间距为1.2cm，凹槽的深度为4.5mm，凹槽底部将刻有菱形花纹，凹槽花纹的深度为0.8mm；b、选择与待改性的轻量化合金板材质相同的盖板，盖板厚度为1.8mm，并在其表面铣出与凹槽相同尺寸的凸台，凸台的厚度为1mm且凸台同样刻有菱形花纹，凸台花纹深度为0.3mm；c、根据将轻量化合金需要改性的性能添加合适的改性粉末，将混合均匀的改性粉末平整的铺设在凹槽内，并压实，盖上盖板，凸台一一对应朝向凹槽内部，然后用滚压机压紧成一板材；d、将滚压好的板材放入到中频加热炉中加热到405℃，然后取出在滚压机上再次滚压；e、将再次滚压好的板材放入搅拌摩擦焊工作台上装夹好，然后将搅拌针(搅拌针的长度为盖板厚度与凹槽深度之和)插入板材表层进行搅拌改性成型，搅拌头中的搅拌针要倾斜1°；f、将搅拌好的板材放在磨床上进行磨削，去 除飞边与毛刺，最后获得改性后的轻量化合金表层。A method for modifying the performance of the surface layer of a lightweight alloy, the steps of which are: a. milling several grooves on the surface of the lightweight alloy plate to be modified, the side length of the grooves is 1.5mm and the distance between adjacent grooves is The distance between the grooves is 1.2cm, the depth of the groove is 4.5mm, the bottom of the groove will be engraved with a diamond pattern, and the depth of the groove pattern is 0.8mm; b. Select the cover plate with the same material as the lightweight alloy plate to be modified, The thickness of the cover plate is 1.8mm, and a boss with the same size as the groove is milled on its surface. The thickness of the boss is 1mm and the boss is also engraved with a diamond pattern. The depth of the boss pattern is 0.3mm; c. According to the light Quantify the performance of the alloy that needs to be modified Add appropriate modified powder, lay the uniformly mixed modified powder in the groove, and compact it, cover the cover plate, and the bosses are facing the inside of the groove one by one, and then use Press the rolling machine into a plate; d. Put the rolled plate into the intermediate frequency heating furnace and heat it to 405°C, then take it out and roll it again on the rolling machine; e. Put the rolled plate into the Clamp it on the friction stir welding workbench, and then insert the stirring needle (the length of the stirring needle is the sum of the thickness of the cover plate and the depth of the groove) into the surface layer of the plate for stirring and modification molding. The stirring needle in the stirring head should be inclined 1°; f 1. Put the stirred plate on the grinder for grinding to remove flash and burrs, and finally obtain the modified lightweight alloy surface.
本发明的方法基于用户应用的零部件着手，由于其需求量小、但品种多样，故而采用在板材表面开槽填改性粉末，然后在其上面盖一个相同材质的薄板材，先通过中频加热使添加的金属粉末塑化，然后在通过滚压、搅拌成型的办法实现表层的改性，最后通过磨削去除表面的毛刺和飞边，最终获得想要的改性表层；该方法简单、可靠、可行，无污染，且成本低，可以推广应用。The method of the present invention is based on the parts used by the user. Since the demand is small but the variety is diverse, the surface of the plate is slotted and filled with modified powder, and then a thin plate of the same material is covered on it. First, it is heated by intermediate frequency. Plasticize the added metal powder, then modify the surface layer by means of rolling and stirring molding, and finally remove the burrs and flashes on the surface by grinding, and finally obtain the desired modified surface layer; this method is simple and reliable , Feasible, pollution-free, and low cost, can be popularized and applied.
以上实施例仅为说明本发明的技术思想，不能以此限定本发明的保护范围，凡是按照本发明提出的技术思想，在技术方案基础上所做的任何改动，均落入本发明保护范围之内；本发明未涉及的技术均可通过现有技术加以实现。The above embodiments are only to illustrate the technical ideas of the present invention, and can not limit the protection scope of the present invention with this. All technical ideas proposed in accordance with the present invention, any changes made on the basis of technical solutions, all fall within the protection scope of the present invention. In; technologies not involved in the present invention can be realized by existing technologies.

Claims (10)

  1. 一种改性轻量化合金表层性能的方法，其特征在于：该方法步骤如下：A method for modifying the properties of the surface layer of a lightweight alloy, characterized in that the steps of the method are as follows:
    a、在待改性的轻量化合金板面上铣若干凹槽，且凹槽的底部刻有凹槽花纹；a. Mill a number of grooves on the surface of the lightweight alloy plate to be modified, and the bottom of the groove is engraved with a groove pattern;
    b、选择与待改性的轻量化合金板材质相同的盖板且盖板厚度不超过2mm，在盖板的表面铣出与步骤a中的凹槽一一对应的凸台且凸台的厚度小于凹槽的深度，凸台表面上刻有与凹槽花纹相同的凸台花纹；b. Select a cover plate made of the same material as the lightweight alloy plate to be modified, and the thickness of the cover plate does not exceed 2mm. Mill out the bosses corresponding to the grooves in step a one-to-one on the surface of the cover plate and the thickness of the bosses Less than the depth of the groove, the surface of the boss is engraved with the same boss pattern as the groove pattern;
    c、根据轻量化合金的改性需求在步骤a中的凹槽内添加对应的改性粉末，在步骤a中的待改性的轻量化合金板上盖上步骤b中的盖板且凸台与凹槽一一对应后用滚压机压紧成一板材；c. Add the corresponding modified powder in the groove in step a according to the modification requirements of the lightweight alloy, cover the lightweight alloy plate to be modified in step a with the cover plate in step b and the boss After one-to-one correspondence with the grooves, it is pressed into a plate with a rolling machine;
    d、将步骤c压紧后的板材放入到中频加热炉内并加热到380℃～430℃，然后取出在滚压机上再次滚压；d. Put the plate compressed in step c into an intermediate frequency heating furnace and heat it to 380 ° C ~ 430 ° C, then take it out and roll it again on the rolling machine;
    e、将步骤d再次滚压后的板材放入搅拌摩擦焊工作台上装夹好，然后将搅拌针插入板材表层进行搅拌改性成型；e. Put the plate rolled again in step d into the friction stir welding workbench for clamping, and then insert the stirring needle into the surface of the plate to carry out stirring modification molding;
    f、将搅拌改性成型好的板材放在磨床上进行磨削，去除飞边与毛刺，最后获得改性后的轻量化合金表层。f. Put the modified and formed plate on the grinding machine for grinding to remove flash and burrs, and finally obtain the modified lightweight alloy surface.
  2. 根据权利要求1所述的改性轻量化合金表层性能的方法，其特征在于：所述步骤a中的凹槽的边长为1-3mm。The method for modifying the surface properties of lightweight alloys according to claim 1, characterized in that: the side length of the groove in the step a is 1-3 mm.
  3. 根据权利要求2所述的改性轻量化合金表层性能的方法，其特征在于：所述步骤a中的待改性的轻量化合金板面上的相邻凹槽之间的间距不大于凹槽的边长。The method for modifying the surface properties of lightweight alloys according to claim 2, characterized in that: the distance between adjacent grooves on the surface of the lightweight alloy plate to be modified in the step a is not greater than that of the grooves side length.
  4. 根据权利要求1所述的改性轻量化合金表层性能的方法，其特征在于：所述步骤a中的凹槽的深度不超过5mm且步骤b中的凸台的厚度不超过1mm。The method for modifying the surface properties of lightweight alloys according to claim 1, characterized in that: the depth of the groove in step a does not exceed 5 mm and the thickness of the boss in step b does not exceed 1 mm.
  5. 根据权利要求1所述的改性轻量化合金表层性能的方法，其特征在于：所述步骤a中的凹槽花纹的深度为0.5～1mm且步骤b中的凸台花纹的深度不超过0.5mm。The method for modifying the surface properties of lightweight alloys according to claim 1, characterized in that: the depth of the groove pattern in the step a is 0.5-1mm and the depth of the boss pattern in the step b does not exceed 0.5mm .
  6. 根据权利要求1或5所述的改性轻量化合金表层性能的方法，其特征在于：所述步骤a中的凹槽花纹和所述步骤b中的凸台花纹采用相同的花纹。The method for modifying the properties of the lightweight alloy surface layer according to claim 1 or 5, characterized in that the groove pattern in the step a and the boss pattern in the step b adopt the same pattern.
  7. 根据权利要求6所述的改性轻量化合金表层性能的方法，其特征在于：所述步骤a中的凹槽花纹和所述步骤b中的凸台花纹采用方块花纹、或菱形花纹、或S型花纹中的一种。The method for modifying the surface performance of lightweight alloys according to claim 6, characterized in that: the groove pattern in the step a and the boss pattern in the step b adopt a square pattern, or a rhombus pattern, or a S One of the patterns.
  8. 根据权利要求1所述的改性轻量化合金表层性能的方法，其特征在于：所述步骤c中的改性粉末为W、Ni、Ti中的一种或多种的混合；将均匀的改性粉末平整的铺设在步骤a中的凹槽中并压实，在步骤a中的待改性的轻量化合金上盖上步骤b中的盖板，凸台朝向凹槽内部且一一对应，然后用滚压机压紧成一板材。The method for modifying the surface layer properties of lightweight alloys according to claim 1, characterized in that: the modified powder in the step c is a mixture of one or more of W, Ni, Ti; the uniform modified The non-reactive powder is evenly laid in the groove in step a and compacted, and the lightweight alloy to be modified in step a is covered with the cover plate in step b, and the bosses face the inside of the groove and correspond one by one. It is then pressed into a sheet with a rolling press.
  9. 根据权利要求1所述的改性轻量化合金表层性能的方法，其特征在于：所述步骤e中的搅拌针的长度为步骤b中的盖板厚度与步骤a中的凹槽深度之和。The method for modifying surface properties of lightweight alloys according to claim 1, characterized in that: the length of the stirring needle in step e is the sum of the thickness of the cover plate in step b and the depth of the groove in step a.
  10. 根据权利要求1或9所述的改性轻量化合金表层性能的方法，其特征在于：所述步骤e中的搅拌针相对板材表层倾斜1°～3°。The method for modifying the properties of the surface layer of the lightweight alloy according to claim 1 or 9, characterized in that: the stirring needle in the step e is inclined 1° to 3° relative to the surface layer of the plate.
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