JPH01306066A - Overlay method for casting - Google Patents
Overlay method for castingInfo
- Publication number
- JPH01306066A JPH01306066A JP13594188A JP13594188A JPH01306066A JP H01306066 A JPH01306066 A JP H01306066A JP 13594188 A JP13594188 A JP 13594188A JP 13594188 A JP13594188 A JP 13594188A JP H01306066 A JPH01306066 A JP H01306066A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- layer
- overlay
- molten
- sintered
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005266 casting Methods 0.000 title abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 20
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 22
- 239000002344 surface layer Substances 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 8
- 239000010962 carbon steel Substances 0.000 abstract description 8
- 239000011230 binding agent Substances 0.000 abstract description 2
- 238000005304 joining Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 3
- 239000010959 steel Substances 0.000 abstract 3
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 230000002706 hydrostatic effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 16
- 238000005096 rolling process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009694 cold isostatic pressing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ｖｔ造体の表層に材質が異なる焼結層を形成
する鋳造品の肉盛方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method of overlaying a cast product by forming a sintered layer of different materials on the surface layer of a VT structure.
（従来の技術）
一般に、使用環境が過酷な鋳造品などの金Ｗ４製品は、
その金属製品の表面の一部または全部に材質の異なる材
料を接合したり肉盛したりして、特殊加工を施すことに
より、金属製品の耐摩耗性あるいはｉ−１食性等の特性
を向上させている。(Conventional technology) In general, gold W4 products such as cast products, which are used in harsh environments,
By joining or overlaying different materials on part or all of the surface of the metal product and applying special processing, the wear resistance or i-1 corrosion resistance of the metal product can be improved. ing.
金属製品の特殊加工表面層を形成する手段としては、本
体の粉末原料と異種の粉末原料とを複金属にし圧力成形
する熱間静水圧プレス、異種の金属板を圧延により接合
するクラッド圧延、溶接機による肉盛溶接等がある。Means for forming the specially processed surface layer of metal products include hot isostatic pressing, which pressure-forms the powder raw material of the main body and different types of powder raw materials into composite metals, clad rolling, which joins different types of metal plates by rolling, and welding. There is overlay welding using a machine.
（発明が解決しようとする課題）
しかし、従来の特殊表面層を形成する加工手段は、熱間
静水圧プレス機、クラッド圧延機、溶接機等の装置を用
いるため、特殊表面層を形成するための装置が大型化、
複雑化するばかりでなく、最終製品を造るまでの加工工
程が多数になり、作業性が悪いという問題がある。(Problem to be Solved by the Invention) However, conventional processing means for forming the special surface layer use equipment such as a hot isostatic press machine, a clad rolling machine, a welding machine, etc. equipment becomes larger,
There is a problem that not only is the process complicated, but also that there are many processing steps required to produce the final product, resulting in poor workability.
本発明は、このような問題点を解決するためになされた
もので、金属表面に肉盛用焼結層を形成したｆ？遺品を
簡単なト順で製造する肉盛方法を提供することを目的と
する９
（課題を解決するための手段）
そのために、本発明の鋳造品の肉盛方法は、肉盛用合金
粉末を用いて薄肉の鋳型を造り、この鋳型内に金属溶湯
を注ぎ、この金属溶湯のもつ熱で前記鋳型を焼結し、粉
末材からなる鋳型層と溶湯層とを拡散接合したことを特
徴とする。The present invention was made to solve these problems, and is an f? It is an object of the present invention to provide a method for overlaying a cast product in a simple order. The method is characterized in that a thin-walled mold is made using a powder material, a molten metal is poured into the mold, the mold is sintered by the heat of the molten metal, and the mold layer made of powder material and the molten metal layer are diffusion bonded. .
本発明の鋳造品は、鋳造体の表層の一部または全部が粉
末材からなる焼結層で被覆されていることを特徴とする
。The cast product of the present invention is characterized in that part or all of the surface layer of the cast body is covered with a sintered layer made of powder material.
（作用）
本発明の肉盛方法を用いると、肉盛用合金粉末材からな
る鋳型内に高温の金属溶湯が注がれ、その金属溶湯のも
つ熱で薄肉の鋳型を構成する粉末材が焼結される。この
とき、粉末材層と１８？８層とは拡散接合される。(Function) When the overlay method of the present invention is used, high-temperature molten metal is poured into a mold made of alloy powder material for overlay, and the powder material constituting the thin mold is sintered by the heat of the molten metal. tied. At this time, the powder material layer and the 18-8 layer are diffusion bonded.
したがって、金属表面に肉感用焼結層を形成した鋳造品
がきわめて簡単な方法で装造される。Therefore, a cast product having a sensuous sintered layer formed on the metal surface can be manufactured using an extremely simple method.
本発明の鋳造品は、肉盛が必要とされる部分にあらかじ
め肉盛用合金粉末を用いて冷間静水圧ブレス等により鋳
型を造り、この鋳型に鋳造鉢本体を構成する金属溶湯な
注ぐと、このｖＩ型を構成する粉末材層が焼結されるの
で、＠弔な操作で肉盛焼結される。In the casting product of the present invention, a mold is made in advance using a cold isostatic press or the like using alloy powder for overlay on the part where overlay is required, and the molten metal constituting the casting pot body is poured into this mold. Since the powder material layer constituting this vI type is sintered, overlay sintering is performed in a simple operation.
（実施例） 本発明の実施例について説明する。(Example) Examples of the present invention will be described.
この実施例は、鋳造品に耐摩耗性の良好な表面硬化焼結
層を肉盛する方法である。This example is a method of overlaying a surface hardened sintered layer with good wear resistance on a cast product.
まず肉盛用合金粉末に有機バインダ１％を混合し、充分
に混練した。この混練物を用いて冷間静水圧プレスによ
り厚さ３ｍｍの薄型の鋳型を造った。First, 1% of an organic binder was mixed with the alloy powder for overlay and thoroughly kneaded. Using this kneaded material, a thin mold with a thickness of 3 mm was made by cold isostatic pressing.
この鋳型に炭素鋼溶湯な注ぎ、この炭素鋼溶湯のもつ熱
で前記鋳型を焼結し、粉末材からなる鋳をと溶湯層を拡
散接合した。Molten carbon steel was poured into this mold, and the mold was sintered by the heat of the molten carbon steel, thereby diffusion bonding the molten metal layer to the casting made of powder material.
ここで用いた肉盛用合金粉末および炭素Ｒ７８湯の化学
組成は、それぞれ
肉盛用合金粉末＝２．１％Ｃ１０３５％Ｓｉ、４−０％
Ｃｒ、６．０％Ｍｏ、１４．Ｏ％Ｗ、５．５％■、１２
０％ＣＯ１
残部実質的にＦｅ
炭素鋼溶湯：０．４３％Ｃ１０，７％Ｍｎ、残部実質的
にＦｅ
であった、炭素鋼溶湯の温度は１４５０℃以上にして鋳
込んだ。The chemical compositions of the alloy powder for overlay and carbon R78 hot water used here are as follows: Alloy powder for overlay = 2.1%C1035%Si, 4-0%
Cr, 6.0% Mo, 14. O%W, 5.5%■, 12
0% CO1, balance substantially Fe Carbon steel molten metal: 0.43%C10, 7%Mn, remainder substantially Fe.The temperature of the carbon steel molten metal was set to 1450°C or higher and was cast.
得られた鋳造品について、各部位の硬さ試験を行なった
結果、粉末材層（焼結層）の硬度は、ビッカース硬さが
６９０１−ＩＶとなり、７８湯層に比べかなり高硬度で
あることが判明した。As a result of hardness testing of each part of the obtained cast product, the hardness of the powder material layer (sintered layer) was found to have a Vickers hardness of 6901-IV, which is considerably higher than that of the 78 hot water layer. There was found.
粉末材層と溶湯層の境界面は、注湯時に容易に拡散接合
される。この場合、粉末材層は、炭素鋼溶湯のもつ熱に
より加熱され焼結されたものと推定される。The interface between the powder material layer and the molten metal layer is easily diffusion bonded during pouring. In this case, it is presumed that the powder material layer was heated and sintered by the heat of the molten carbon steel.
なお、肉盛部となる焼結層の厚さ１組織等は、その材質
、合金粉末の粒度、注湯温度等により制御される。The thickness of the sintered layer forming the build-up portion is controlled by the material, particle size of the alloy powder, pouring temperature, etc.
この実施例の肉盛方法では、鋳造品の表層に耐摩耗性の
良好な表面硬化層を形成したが、本発明の肉盛方法は、
耐食性の良好な表層その他の特性をもつ表層を造るとき
適用することができることはもちるんである。In the overlay method of this example, a hardened surface layer with good wear resistance was formed on the surface layer of the cast product, but the overlay method of the present invention
It goes without saying that it can be applied when creating a surface layer with good corrosion resistance or other properties.
（発明の効果）
以上説明したように１本発明の鋳造品の肉盛方法によれ
ば、肉盛用合金粉末材からなる鋳型に注湯するという極
めて簡単な操作を行なうだけで、′ｉ１を造品の所定の
箇所に目的に応じた性質をもつ肉盛焼結層を形成するこ
とができるので、製品の金属表面に特殊な二次加工層を
容易にかつ作業効率よくしかも低コストに形成すること
ができるという効果がある。(Effects of the Invention) As explained above, according to the method for overlaying a cast product of the present invention, 'i1 can be achieved by simply performing the extremely simple operation of pouring the metal into a mold made of alloy powder material for overlay. It is possible to form a built-up sintered layer with properties tailored to the purpose at a predetermined location on a manufactured product, making it possible to form a special secondary processing layer on the metal surface of the product easily, efficiently, and at low cost. The effect is that it can be done.
Claims (2)
鋳型内に金属溶湯を注ぎ、この金属溶湯のもつ熱で前記
鋳型を焼結し、粉末材からなる鋳型層と溶湯層とを拡散
接合したことを特徴とする鋳造品の肉盛方法。(1) Create a thin mold using alloy powder for overlay, pour molten metal into the mold, sinter the mold using the heat of the molten metal, and create a mold layer made of powder material and a molten metal layer. A method for overlaying a cast product, characterized by diffusion bonding.
焼結層で被覆されていることを特徴とする鋳造品。(2) A cast product characterized in that part or all of the surface layer of the cast product is covered with a sintered layer made of powder material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13594188A JPH01306066A (en) | 1988-06-02 | 1988-06-02 | Overlay method for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13594188A JPH01306066A (en) | 1988-06-02 | 1988-06-02 | Overlay method for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01306066A true JPH01306066A (en) | 1989-12-11 |
Family
ID=15163425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13594188A Pending JPH01306066A (en) | 1988-06-02 | 1988-06-02 | Overlay method for casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01306066A (en) |
-
1988
- 1988-06-02 JP JP13594188A patent/JPH01306066A/en active Pending
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