JPH026098A - Powder plasma overlay alloy material and powder plasma overlaying method - Google Patents
Powder plasma overlay alloy material and powder plasma overlaying methodInfo
- Publication number
- JPH026098A JPH026098A JP24560788A JP24560788A JPH026098A JP H026098 A JPH026098 A JP H026098A JP 24560788 A JP24560788 A JP 24560788A JP 24560788 A JP24560788 A JP 24560788A JP H026098 A JPH026098 A JP H026098A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- overlay
- hard ceramic
- plasma
- particles
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 100
- 239000000956 alloy Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 10
- 239000000919 ceramic Substances 0.000 claims abstract description 39
- 239000002245 particle Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000010953 base metal Substances 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000011812 mixed powder Substances 0.000 claims description 12
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 4
- 239000011361 granulated particle Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 abstract description 21
- 238000003466 welding Methods 0.000 abstract description 13
- 239000000203 mixture Substances 0.000 abstract description 8
- 238000007788 roughening Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、耐摩耗性及び耐肌荒性に優れた肉盛合金材及
び該肉盛合金材が得られる粉体プラズマ肉盛法に関する
。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a build-up alloy material with excellent wear resistance and roughness resistance, and a powder plasma build-up method for obtaining the build-up alloy material.
（従来の技術）
従来、圧延用ロールの耐摩耗性を大幅に向上させるため
、圧延使用層たる外層を硬質肉盛層で形成したロールが
知られている。前記硬質肉盛層は、Ｃｏ基合金、Ｎｉ基
合金等で形成した基地金属中に託。(Prior Art) Conventionally, in order to significantly improve the wear resistance of rolling rolls, rolls are known in which the outer layer, which is the layer used for rolling, is formed of a hard facing layer. The hard overlay layer is deposited in a base metal made of a Co-based alloy, a Ni-based alloy, or the like.
ＶＣ，ＮｂＣ等の硬質セラミックス粒子を分散した肉盛
合金材で形成されている。It is made of an overlay alloy material in which hard ceramic particles such as VC and NbC are dispersed.
第９図は鋼材等の基体２１０表面に、粉体プラズマ肉盛
溶接によって前記硬質肉盛層２２を形成している状態を
示している。FIG. 9 shows a state in which the hard build-up layer 22 is formed on the surface of a base 210 made of steel or the like by powder plasma build-up welding.
同図において、２３は溶接トーチであり、電極２４と内
筒２５との間にプラズマガス流路２６が、内筒２５と中
間筒２７との間に粉体供給路２８が、中間筒２７と外筒
２９との間にシールドガス流路３０が設けられている。In the figure, 23 is a welding torch, a plasma gas flow path 26 is provided between the electrode 24 and the inner cylinder 25, a powder supply path 28 is provided between the inner cylinder 25 and the intermediate cylinder 27, and a powder supply path 28 is provided between the inner cylinder 25 and the intermediate cylinder 27. A shield gas flow path 30 is provided between the outer cylinder 29 and the outer cylinder 29 .
基体２１は電極２４に対してプラスの電圧が印加され、
基体２１０表面と電極２４との間にプラズマアークを発
生せしめると共に、この中に肉盛用粉末を粉体供給路２
８より供給して溶接させ、母体２１の表面に急冷凝固せ
しめて、肉盛層２２を形成する。A positive voltage is applied to the base 21 with respect to the electrode 24,
A plasma arc is generated between the surface of the base body 210 and the electrode 24, and the overlay powder is introduced into the powder supply path 2.
8 for welding, and is rapidly solidified on the surface of the base body 21 to form a built-up layer 22.
前記肉盛用粉末として、基地金属粉末と硬質セラミック
ス粉末との混合粉末であって、粒径が６０〜２５０ Ｂ
ｍのものが使用されている。２５０ μｍを越えると粉
体の流動性が悪く、また６０μｍ未満では粉体流動性の
悪化及び粉粒がトーチ２３のプラズマガスノズル孔の回
りに付着して、アークの不安定化を招来し、肉盛用粉末
の溶は込み不良が発生ずるからである。The overlay powder is a mixed powder of base metal powder and hard ceramic powder, and has a particle size of 60 to 250 B.
m is used. If the diameter exceeds 250 μm, the fluidity of the powder will be poor, and if the diameter is less than 60 μm, the fluidity of the powder will deteriorate and the powder particles will adhere around the plasma gas nozzle hole of the torch 23, resulting in instability of the arc and This is because poor melting of the filling powder occurs.
（発明が解決しようとする課題）
しかし７ながら、前記混合粉末を使用した場合、ｆ■い
粒子が未溶融のままで組織中に存在し、特に、硬質セラ
ミツクス粉末の添加量を増やすほどその傾向は著しい。(Problem to be Solved by the Invention) However, when the above-mentioned mixed powder is used, f* particles remain unmelted in the structure, and this tendency tends to increase as the amount of hard ceramic powder added increases. is remarkable.
粗い未溶融硬質粒子が基地金属中に存在すると、耐摩耗
性にムラが生じ、これがロール使用時に肌荒れの原因と
なる。肌荒れが生じると使用層が減耗していなくとも、
ロール寿命に達することになる。また、未熔融硬質粒子
が基地より欠落し易く、耐摩耗性が劣化する。If coarse unmelted hard particles are present in the base metal, the wear resistance will be uneven, which will cause rough skin when the roll is used. When skin becomes rough, even if the layer used is not worn out,
The roll life will be reached. In addition, unmelted hard particles are likely to be lost from the base, resulting in deterioration of wear resistance.
本発明はかかる問題に鑑みなされたもので、圧延使用層
として好適な、耐摩耗性と耐肌荒性に優れた肉盛材及び
該肉盛材が得られるプラズマ肉盛方法を提供することを
目的とする。The present invention has been made in view of such problems, and it is an object of the present invention to provide a build-up material that is suitable for a layer used in rolling and has excellent wear resistance and roughness resistance, and a plasma build-up method for obtaining the build-up material. purpose.
（課題を解決するための手段）
上記目的を達成するためになされた本発明の肉盛材は、
粉体プラズマ肉盛によって得られた肉盛合金材であって
、基地金属中に３０μｍ以下の硬質セラミックス粒子が
分散されていることを発明の構成とするものである。(Means for Solving the Problem) The overlay material of the present invention, which has been made to achieve the above object, has the following features:
The present invention is an overlay alloy material obtained by powder plasma overlay, in which hard ceramic particles of 30 μm or less are dispersed in a base metal.
また、本発明の粉体プラズマ肉盛方法は、基地金属粉末
と、粒径３０μｍ以下の硬質セラミツクス粉末がバイン
ダ金属を介して造粒された造粒粒子からなる硬質セラミ
ックス造粒粉末との混合粉末を用いて粉体プラズマ肉盛
を行うことを発明の構成とする。Further, the powder plasma deposition method of the present invention provides a mixed powder of a base metal powder and a hard ceramic granulated powder consisting of granulated particles obtained by granulating hard ceramic powder with a particle size of 30 μm or less via a binder metal. The structure of the invention is to perform powder plasma build-up using.
前記基地金属としては、耐摩耗性に優れた鉄合金、例え
ば高クロム鋳鉄や合金工具鋼が主に使用される。特に、
合金工具鋼のうち、ハイス（ＳＫＩ＋）材は高温耐軟化
性に優れ好適である。As the base metal, iron alloys with excellent wear resistance, such as high chromium cast iron and alloy tool steel, are mainly used. especially,
Among alloy tool steels, high-speed steel (SKI+) material is suitable because it has excellent high-temperature softening resistance.
前記硬質セラミックスとしては、金属酸化物や金属炭化
物、例えばＶＣ，ＮｈＣ，ＷＣ，ＴｉＣが使用されるが
、特に、ＶＣは硬度が１Ｉｖ２５００程度と高く、また
比重が５．５とＦｅに比較的近くかつ肉盛合金中におい
て微細球状となって分散し易く好適である。As the hard ceramics, metal oxides and metal carbides, such as VC, NhC, WC, and TiC, are used. In particular, VC has a high hardness of about 1Iv2500 and a specific gravity of 5.5, which is relatively close to Fe. Moreover, it is suitable because it becomes a fine spherical shape and easily disperses in the overlay alloy.
硬質セラミックス粒子同士を結合するバインダ金属とし
ては、基地金属の物性を低下させることなく合金化し得
るもの、例えばＣｏやＮｉが使用される。As the binder metal that binds the hard ceramic particles together, a metal that can be alloyed without degrading the physical properties of the base metal, such as Co or Ni, is used.
本発明において、硬質セラミックス造粒粉末の粒子を構
成する硬質セラミックス粉末は、既述の通り、粒径３０
μｍ以下のものを使用するが、好ましくは粒径分布のピ
ーク （以下、単にピークという。）が１０μｍ以下の
ものがよい。均一分散性、溶融容易性に極めて優れるか
らである。尚、ピークとは、粒度分布をみたときの最も
ｌ（ｗｔ″Ａ）の多い粒径をいう。In the present invention, the hard ceramic powder constituting the particles of the hard ceramic granulated powder has a particle size of 30
A particle having a particle size distribution of 10 μm or less is preferably used. This is because it has excellent uniform dispersibility and meltability. Note that the peak refers to the particle size with the most l(wt″A) when looking at the particle size distribution.
硬質セラミックス造粒粉末の粒子径は、粉体プラズマ肉
盛が可能な大きさ、すなわち、６０〜２５０μｍとされ
る。The particle diameter of the hard ceramic granulated powder is set to a size that allows powder plasma build-up, that is, 60 to 250 μm.
該造粒粉末は、硬質セラミックス粉末にバインダ金属粉
末を添加混合し、軽く焼結することにより容易に得られ
る。バインダ金属の添加■は添加後の粉末全量に対し１
０ｗｔχ程度で十分である。尚、バインダ金属粉末の粒
径は、結合の容易性から使用する硬質セラミックス粉末
とほぼ同径又はそれ以下のものを使用するのがよい。The granulated powder can be easily obtained by adding and mixing binder metal powder to hard ceramic powder and lightly sintering the mixture. Addition of binder metal is 1 to the total amount of powder after addition.
Approximately 0 wtχ is sufficient. Note that the binder metal powder preferably has a particle size that is approximately the same or smaller than the hard ceramic powder used for ease of bonding.
肉盛用混合粉末中の硬質セラミツクス造粒粉末の配合量
は、耐摩耗性の要求程度により適宜設定されるが、硬質
セラミックス粉末量が混合粉末全量に対して５〜３０ｗ
ｔχ程度とするのがよい。３ｏχを越えると、靭性の低
下が著しくなるからである。The amount of hard ceramic granulated powder in the mixed powder for overlay is set appropriately depending on the required degree of wear resistance, but the amount of hard ceramic powder is 5 to 30 w with respect to the total amount of mixed powder.
It is preferable to set it to about tχ. This is because if it exceeds 3 ox, the toughness will be significantly reduced.
（作 用）
本発明に係る肉盛材は、硬質セラミックス粒子として３
０μｍ以下のものが基地金属中に分散しているので、６
０μｍ以上の粗大な粒子の存在による耐摩耗性のムラや
欠落１７耗が解消され、耐肌荒性の向上が図られる。(Function) The overlay material according to the present invention has 30% hardness as hard ceramic particles.
Since particles of 0 μm or smaller are dispersed in the base metal, 6
The uneven wear resistance and chipping 17 due to the presence of coarse particles of 0 μm or more are eliminated, and the roughness resistance is improved.
また、本発明の粉体プラズマ肉盛方法によれば、肉盛用
混合粉末中の硬質粉末として、硬質・イ・ラミックス造
粒粉末を使用するので、該造粒粉末を構成する硬質セラ
ミックス粉末として、従来肉盛用粉末として適用不可と
された粒径３０μｍ以下の微粉を使用するとかできる。Further, according to the powder plasma build-up method of the present invention, since hard ceramic granulated powder is used as the hard powder in the mixed powder for build-up, hard ceramic powder constituting the granulated powder is used. As a method, it is possible to use a fine powder with a particle size of 30 μm or less, which has conventionally been considered inapplicable as a powder for overlay.
このため、未溶融状態であっても、基地金属中に均一に
分散させることが可能となり、耐肌荒性の向上に寄与す
ることができる。また、粉体プラズマ肉盛の際、硬質セ
ラミックス粉末が未溶融であっても微細分散が可能とな
るため、硬質セラミックス粉末の使用ｌを増大すること
ができ、耐摩耗性企−層向−ヒさせることができる。更
に、従来、線材として処理されていた硬質セラミックス
微粉末を使用することができ、経済的である。Therefore, even if it is in an unmolten state, it can be uniformly dispersed in the base metal, which can contribute to improving the roughness resistance. In addition, during powder plasma deposition, it is possible to finely disperse the hard ceramic powder even if it is not melted, so it is possible to increase the amount of hard ceramic powder used. can be done. Furthermore, it is possible to use hard ceramic fine powder, which has conventionally been processed into wire rods, which is economical.
（実施例）
実施例１
本発明を熱間線材圧延仕上用ロールの圧延使用層に適用
した実施例を−Ｆ記に示す。第１（２１は同ロールを示
し、に］−ル軸１に圧延リング２が一対のカラーリング
３，３に挟持されて焼きばめ固着されている。前記圧延
リング２の外周部には肉盛層４が形成され、該肉盛層４
の外周面に線材成形用半円形カリバーが複数個刻設され
ている。圧延リング２は以下のよ・うにして製作された
。(Examples) Example 1 An example in which the present invention is applied to a rolling layer of a hot wire rod finishing roll is shown in -F. A rolling ring 2 is sandwiched between a pair of collar rings 3, 3 and fixed by shrink fitting to the first (21) roll shaft 1.The outer periphery of the rolling ring 2 is A build-up layer 4 is formed, and the build-up layer 4
A plurality of semicircular calibers for forming wire rods are engraved on the outer peripheral surface of the . Rolled ring 2 was manufactured as follows.
（１）鋼製素材リング（φ２９５胴×幅１２０ ｍａ＋
）の外周面に深さ１６ｍ＋ｎの肉盛用凹溝を形成し、下
記の肉盛用混合粉末を使用して粉体ブラ；（マ肉盛溶接
を同条件で行い、実施例及び従来例の圧７）４１Ｊング
を製作した。(1) Steel material ring (φ295 body x width 120 ma+
) was formed on the outer circumferential surface of the powder brush with a depth of 16 m + n, and the following mixed powder for overlay was used to perform overlay welding under the same conditions. Pressure 7) A 41J ring was manufactured.
・実施例
■ 基地金属粉末
材質： ５Ｋｔｌ ５７相当
粒径： ６０−２５０ ｕｍ （ピーク：１０１０
０７Ｉ■ 硬質セラミックス造粒粉末
粒径２０μｍ以下（ピーク：１０μｍ）のＶＣ粉末にほ
ぼ同径のＣｏ粉末（添加量１０ｗｔχ）を添加し、これ
を軽く焼結して造粒したもの。・Example ■ Base metal powder material: 5Ktl 57 equivalent particle size: 60-250 um (peak: 1010
07I■ Hard ceramic granulated powder Co powder of approximately the same diameter (addition amount: 10 wtχ) was added to VC powder with a particle size of 20 μm or less (peak: 10 μm), and the mixture was lightly sintered and granulated.
造粒粉末粒径：（Ｄと同様。Granulated powder particle size: (Same as D.
第２図に当該造粒粉末の拡大写真（４５倍）を示す。FIG. 2 shows an enlarged photograph (45 times magnification) of the granulated powder.
■ 配合量
混合粉末中の■粉末量：２０重量％
・従来例
■ 基地金属粉末
実施例と同様
■ 硬質セラミックス粉末
材質： νＣ
粒径：６０〜２５０ μｍ （ピーク１００ μｍ）第
３図に当該ＶＣ粉末の拡大写真（４５倍）を示す。■ Blend amount ■ Powder amount in mixed powder: 20% by weight - Conventional example ■ Same as base metal powder example ■ Hard ceramic powder material: νC Particle size: 60 to 250 μm (peak 100 μm) The corresponding VC is shown in Fig. 3 An enlarged photograph (45x) of the powder is shown.
■ 配合量
混合粉末中の■粉末■： ２０重■χ
（２）肉盛後、焼入れ、二次硬化熱処理を行い、実施例
及び従来例とも硬度Ｉｓ ９０〜９５とした。その後、
肉盛層に所期の線材成形用カリバーを機械加工して、圧
延リングを得た。■ Blend amount ■ Powder ■ in the mixed powder: 20 weight ■χ (2) After overlaying, quenching and secondary hardening heat treatment were performed to give a hardness of Is 90 to 95 in both the example and the conventional example. after that,
A desired caliber for wire rod forming was machined on the overlay layer to obtain a rolled ring.
（３）圧延リングの肉盛層の金属組織を顕微鏡観察した
。その結果を第４図及び第５回に示す。第４図は実施例
、第５図は従来例である。倍率は両図とも１００倍であ
る。(3) The metal structure of the built-up layer of the rolled ring was observed under a microscope. The results are shown in Figure 4 and the 5th round. FIG. 4 shows an example, and FIG. 5 shows a conventional example. The magnification is 100x in both figures.
同図より、従来例では未溶融粗大ＶＣ粉末が認められた
が、実施例では７６粒子が基地中に微細分散している状
態が確認された。From the same figure, in the conventional example, unmelted coarse VC powder was observed, but in the example, it was confirmed that 76 particles were finely dispersed in the matrix.
上記圧延リングを第１図のロールに組み立てた後、実際
に圧延機に設置して線材圧延に供した。After the rolling ring was assembled into the roll shown in FIG. 1, it was actually installed in a rolling mill and subjected to wire rolling.
その結果、従来例は早期に肌荒れが発生したが、実施例
ではロール肌が非常に美麗で、肌荒れについてはまった
く問題なく、摩耗量によってロール寿命が決定され、結
局従来例の８倍以上のノｆ命であった。As a result, while the conventional example developed rough skin early, the roll surface of the example was very beautiful and there was no problem with rough skin.The roll life was determined by the amount of wear, and in the end, the roll surface was more than 8 times that of the conventional example. It was my life.
実施例２ 冷間摩耗試験を下記の要領で行った。Example 2 A cold abrasion test was conducted in the following manner.
（１）実施例１と同様の基地金属粉末、硬質セラミツク
ス造粒粉末からなる混合粉末（前記造粒粉末の配合量１
５重量％）を調製し、基板（鋼板）の上に粉体プラズマ
肉盛溶接を行った。肉盛溶接に際し、スケール、ワレの
発生等は無く、溶接性は良好であった。肉盛溶接後、焼
入れ、二次硬化熱処理を施した。得られた肉盛合金材テ
ストピースの硬度は１Ｉｓ９５であった。(1) A mixed powder consisting of the same base metal powder and hard ceramic granulated powder as in Example 1 (the blended amount of the granulated powder is 1
5% by weight) was prepared, and powder plasma build-up welding was performed on a substrate (steel plate). During overlay welding, there were no scales or cracks, and weldability was good. After overlay welding, quenching and secondary hardening heat treatment were performed. The hardness of the obtained overlay alloy material test piece was 1Is95.
（２）第６図のように、テストピース６にφ１００ ｍ
ｍＸ５ｍｍ厚のＳＳ材製ローラ７を６ｋｇの荷重をかけ
て押しつけなから１２０００ｒｐｍで高速回転した。(2) As shown in Figure 6, test piece 6 has a diameter of 100 m.
A roller 7 made of SS material and measuring m x 5 mm thick was pressed and rotated at a high speed of 12,000 rpm under a load of 6 kg.
３０分後にテストピース６表面の摩耗深さを測定した。After 30 minutes, the depth of wear on the surface of the test piece 6 was measured.
尚、比較のため下記組成のチルド材（ＩＩｓ８０）につ
いても同様の方法、条件で摩耗深さを調べた。For comparison, the wear depth of a chilled material (IIs80) having the following composition was also investigated using the same method and conditions.
・チルド材組成（重量％）
Ｃ：３．３１、Ｓｉ ： ０．３２、Ｍｎ ： ０．２
６、Ｎｉ ： ３．０１、Ｃｒ ： １．１２、Ｍｏ
： ０．２３、残部Ｆｅ（３）測定結果は、実施例が０
．２ｍｍ、チルド材が１．２ｍｍであり、実施例の肉盛
合金材はチルド材と比べて、冷間耐摩耗性においても６
倍程度優れていることが確かめられた。・Chilled material composition (weight%) C: 3.31, Si: 0.32, Mn: 0.2
6, Ni: 3.01, Cr: 1.12, Mo
: 0.23, the remaining Fe(3) measurement result is 0 for the example.
．． 2mm, and 1.2mm for the chilled material, and the overlay alloy material of the example has a cold wear resistance of 6 compared to the chilled material.
It was confirmed that it was twice as good.
実施例３
次に、本発明に係る肉盛合金材をＨ形鋼矯正圧延用ロー
ルに適用した実施例を下記に示す。第７図は同ロールを
示し、一対の矯正圧延用リング１２゜１２がスペーサー
リング１３を介して軸方向に連設されると共にロール軸
１１に固着されている。前記矯正圧延用リング１２の外
周部には肉盛Ｊｉ１４が形成されている。１５は圧延材
である■（形鋼である。前記肉盛層１４は下記の要領で
製作された。Example 3 Next, an example in which the overlay alloy material according to the present invention was applied to a roll for straightening rolling of H-section steel will be shown below. FIG. 7 shows the same roll, in which a pair of straightening rolling rings 12 12 are axially connected via a spacer ring 13 and are fixed to the roll shaft 11. A build-up Ji 14 is formed on the outer periphery of the straightening rolling ring 12. Reference numeral 15 indicates a rolled material (1) (section steel). The overlay layer 14 was manufactured in the following manner.
（１） 鋼製素材リング（材質５４５Ｃ、φ３７０ｍ
ｍＸ幅１００ ｍｍ）を４５０°Ｃに予熱し、その外周
面にプラズマ粉体肉盛溶接を行い、２５ｍｍの肉盛層を
形成した。使用した肉盛用混合粉末は、基地金属粉末と
して５Ｋ１１５６相当材（粒径６０〜２５０μｍ、ビー
ク：１００μｍ）を用い、硬質セラミックス造粒粉末と
しては実施例１と同様のものを用い、該造粒粉末を１０
重量％配合したものを用いた。(1) Steel material ring (material 545C, φ370m
(m x width 100 mm) was preheated to 450°C, and plasma powder build-up welding was performed on its outer peripheral surface to form a build-up layer of 25 mm. The mixed powder for overlay used was a material equivalent to 5K1156 (particle size 60 to 250 μm, peak: 100 μm) as the base metal powder, and the same as in Example 1 was used as the hard ceramic granulated powder. 10 powder
A mixture of % by weight was used.
（２）肉盛後、焼入れ、二次硬化熱処理、仕上加工を施
し、肉盛層の硬度を測定したところｔｌｓ ９０〜９５
であった。(2) After overlaying, quenching, secondary hardening heat treatment, and finishing were performed, and the hardness of the overlay layer was measured: TLS 90-95
Met.
（３）肉盛層の金属組織を顕微鏡観察した。その結果を
第８図に示す。倍率は４００倍である。第４図と同様、
微細球状のＶＣが基地中に多量に分散析出している状態
が看取された。(3) The metal structure of the overlay layer was observed under a microscope. The results are shown in FIG. The magnification is 400x. Similar to Figure 4,
It was observed that a large amount of fine spherical VC was dispersed and precipitated in the base.
上記矯正圧延用リングを第７図のロールに組み立てた後
、圧延機に設置して矯正圧延に供したところ、従来、摩
耗が顕著であった、フランジからウェブに沿って四分円
形状に形成されたコーナー部での摩耗もほとんど生じな
かった。After the straightening rolling ring was assembled into the roll shown in Fig. 7, it was placed in a rolling mill and subjected to straightening rolling.The ring was formed into a quadrant shape along the web from the flange, which had previously been subject to significant wear. There was also almost no wear at the corners.
本発明の肉盛合金材は、上記実施例のような、圧延用ロ
ールの圧延使用層のみならず、耐摩耗性や耐肌荒性が要
求される種々の用途（例えば、ガイドローラー、テーブ
ルローラー等の圧延機周辺のローラー類あるいは、鍛造
等における熱間成形部品）に適用可能なことは勿論であ
る。The overlay alloy material of the present invention can be used not only in the rolling layer of rolling rolls as in the above embodiments, but also in various applications that require wear resistance and roughness resistance (for example, guide rollers, table rollers, etc.). It goes without saying that it can be applied to rollers around rolling mills, etc., or hot-formed parts in forging, etc.).
（発明の効果）
以上説明した通り、本発明の肉盛材は、基地金属中に存
在する硬質セラミックス粒子は粒径が３０μｍ以下であ
るから、従来のように６０μｍ以上の粗大な粒子の存在
による耐摩耗性のムラが解消され、耐肌荒性に優れる。(Effects of the Invention) As explained above, since the hard ceramic particles present in the base metal have a particle size of 30 μm or less, the overlay material of the present invention is not affected by the presence of coarse particles of 60 μm or more as in the conventional case. Unevenness in abrasion resistance is eliminated and the surface has excellent roughness resistance.
また、本発明の粉体プラズマ肉盛方法によれば、肉盛用
粉末中の硬質粉末として硬質セラミックス造粒粉末を使
用するので、従来、肉盛用粉末として使用不可であった
硬質セラミックス微粉末の使用が可能となって経済的で
あり、また、３０μｍ以下の硬質セラミックス微粉末を
造粒粉末の粒子の構成物として使用しているから、粉体
プラズマ肉盛の際、未溶融状態でそのまま基地金属中に
存在しても、従来のように６０μｍ以上の粗い未溶融粒
子の存在による耐摩耗性のムラが生じず、耐肌荒性に優
れた肉盛材が得られる。Furthermore, according to the powder plasma welding method of the present invention, hard ceramic granulated powder is used as the hard powder in the welding powder. In addition, since hard ceramic fine powder of 30 μm or less is used as a constituent of the granulated powder particles, it can be used in an unmolten state during powder plasma deposition. Even if it is present in the base metal, unevenness in wear resistance due to the presence of coarse unmelted particles of 60 μm or more does not occur as in the conventional case, and a build-up material with excellent surface roughness resistance can be obtained.
特に、基地金属粉末としてハイス材粉末、硬質セラミッ
クス造粒粉末としてＶＣ造粒粉末を用いると、基地中に
微細球状のＶＣを多量に分散析出させることができ、高
温下における耐軟化性、耐摩耗性に優れた肉盛合金材が
得られる。In particular, if high-speed steel powder is used as the base metal powder and VC granulated powder is used as the hard ceramic granulated powder, a large amount of fine spherical VC can be dispersed and precipitated in the base, resulting in good softening resistance and wear resistance at high temperatures. A build-up alloy material with excellent properties can be obtained.
【図面の簡単な説明】
第１図は圧延使用層が本発明に係る肉盛合金材で形成さ
れた熱間線材圧延仕上用組立ロールの要部断面図、第２
図は実施例に係る造粒粉末の粒子構造写真、第３図は従
来例に係るＶＣ粉末の粒子構造写真、第４図は実施例１
に係る粉体プラズマ肉盛溶接によってｉ；￥りれた肉盛
合金材の金属ｍ織写真、第５図は従来例に係る同金属組
織写真、第６図は冷間摩耗試験要領説明図、第７図はＩ
ｆ形鋼矯正圧延用組立ロールの要部断面図、第８図は実
施例３に係る肉盛合金材の金属組織写真、第９図は粉体
プラズマ肉盛７容接の実施要領説明図である。
特許出願人 久保田鉄工株式会社
第
図[Brief Description of the Drawings] Fig. 1 is a sectional view of a main part of an assembly roll for finishing hot wire rod rolling in which the rolling layer is formed of the overlay alloy material according to the present invention;
The figure is a photograph of the particle structure of the granulated powder according to the example, FIG. 3 is a photograph of the particle structure of the VC powder according to the conventional example, and FIG.
Fig. 5 is a photograph of the metal structure of the overlay alloy material obtained by powder plasma overlay welding, Fig. 5 is a photograph of the same metallographic structure according to the conventional example, Fig. 6 is an explanatory diagram of the cold wear test procedure, Figure 7 is I
FIG. 8 is a photograph of the metallographic structure of the overlay alloy material according to Example 3, and FIG. 9 is an explanatory diagram of the implementation procedure of powder plasma overlay 7 welding. be. Patent applicant: Kubota Iron Works Co., Ltd.
Claims (4)
あって、基地金属中に３０μｍ以下の硬質セラミックス
粒子が分散されていることを特徴とする粉体プラズマ肉
盛合金材。(1) A powder plasma build-up alloy material obtained by powder plasma build-up, characterized in that hard ceramic particles of 30 μm or less are dispersed in a base metal.
粒子がＶＣ粒子である請求項（１）の肉盛合金材。(2) The overlay alloy material according to claim (1), wherein the base metal is a high speed steel material and the hard ceramic particles are VC particles.
ックス粉末がバインダ金属を介して造粒された造粒粒子
からなる硬質セラミックス造粒粉末との混合粉末を用い
て粉体プラズマ肉盛を行うことを特徴とする粉体プラズ
マ肉盛方法。(3) Powder plasma build-up is performed using a mixed powder of base metal powder and hard ceramic granulated powder consisting of granulated particles made by granulating hard ceramic powder with a particle size of 30 μm or less via a binder metal. A powder plasma overlay method characterized by the following.
粉末がＶＣ粉末である請求項（３）の肉盛方法。(4) The overlay method according to claim (3), wherein the base metal is a high speed steel powder and the hard ceramic powder is a VC powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24560788A JPH026098A (en) | 1988-03-31 | 1988-09-29 | Powder plasma overlay alloy material and powder plasma overlaying method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63-80367 | 1988-03-31 | ||
| JP8036788 | 1988-03-31 | ||
| JP24560788A JPH026098A (en) | 1988-03-31 | 1988-09-29 | Powder plasma overlay alloy material and powder plasma overlaying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH026098A true JPH026098A (en) | 1990-01-10 |
Family
ID=26421389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24560788A Pending JPH026098A (en) | 1988-03-31 | 1988-09-29 | Powder plasma overlay alloy material and powder plasma overlaying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH026098A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966684A (en) * | 2010-08-31 | 2011-02-09 | 南京飞燕活塞环股份有限公司 | Method for processing biased barrel surface of piston ring |
| JP2017024077A (en) * | 2015-07-24 | 2017-02-02 | 大同特殊鋼株式会社 | Padding welding method of water-cooled wall panel |
| US20180127875A1 (en) * | 2016-11-04 | 2018-05-10 | National Chung Shan Institute Of Science And Technology | Apparatus for performing selenization and sulfurization process on glass substrate |
-
1988
- 1988-09-29 JP JP24560788A patent/JPH026098A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966684A (en) * | 2010-08-31 | 2011-02-09 | 南京飞燕活塞环股份有限公司 | Method for processing biased barrel surface of piston ring |
| JP2017024077A (en) * | 2015-07-24 | 2017-02-02 | 大同特殊鋼株式会社 | Padding welding method of water-cooled wall panel |
| US20180127875A1 (en) * | 2016-11-04 | 2018-05-10 | National Chung Shan Institute Of Science And Technology | Apparatus for performing selenization and sulfurization process on glass substrate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4110514A (en) | Weld metal deposit coated tool steel | |
| GB2023478A (en) | Method of welding for hard surfacing | |
| US5106576A (en) | Method of producing a wear-resistant compound roll | |
| US11254040B2 (en) | Surfacing process, surfaced or resurfaced metal part | |
| US3819364A (en) | Welding hard metal composition | |
| JP3896478B2 (en) | Materials for building up and composite tools with excellent corrosion resistance, wear resistance and seizure resistance | |
| JPH0649228B2 (en) | Tool manufacturing method | |
| CN108642401A (en) | Roller for hot rolling | |
| JPH026098A (en) | Powder plasma overlay alloy material and powder plasma overlaying method | |
| JPS63199092A (en) | Welded overlay roll for hot rolling | |
| RU2465111C2 (en) | Electrode for wear deposition and method of making antiwear layer on metallurgical equipment using deposition electrodes | |
| JPS63157796A (en) | Production of welded overlay roll for hot rolling | |
| JPH04358046A (en) | High speed steel base sintered alloy | |
| JPS5978794A (en) | Mechanical parts for iron making having wear resistance | |
| CN107363431A (en) | A kind of self-shield open arc built-up welding austenitic matrix flux-cored wire and its application process | |
| JPH1161349A (en) | Roll and its manufacture | |
| JPH06145887A (en) | Composite high-speed steel sleeve roll and its production | |
| EP0510598B1 (en) | Wear-resistant compound roll | |
| JPS63235092A (en) | Alloy for plasma powder buildup welding and buildup-welded roll for hot rolling | |
| JPS60158906A (en) | Composite roll for rolling and its manufacture | |
| CA1065652A (en) | Weld metal deposit | |
| EP3141628B1 (en) | Sliding member and piston ring | |
| JP2996148B2 (en) | Work roll for cold rolling and its manufacturing method | |
| JPH11267731A (en) | Roll and roller for hot rolling shop | |
| JP2001059147A (en) | Composite member made of steel, having wear resistant sintered outer layer |