JPH01209367A - Adjustment of analysis sample for partially alloyed powder - Google Patents
Adjustment of analysis sample for partially alloyed powderInfo
- Publication number
- JPH01209367A JPH01209367A JP63032881A JP3288188A JPH01209367A JP H01209367 A JPH01209367 A JP H01209367A JP 63032881 A JP63032881 A JP 63032881A JP 3288188 A JP3288188 A JP 3288188A JP H01209367 A JPH01209367 A JP H01209367A
- Authority
- JP
- Japan
- Prior art keywords
- analysis
- sample
- heat treatment
- powder
- partially alloyed
- 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
- 238000004458 analytical method Methods 0.000 title claims abstract description 35
- 239000000843 powder Substances 0.000 title claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 19
- 239000000956 alloy Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 2
- 239000002923 metal particle Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 7
- 238000005275 alloying Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000000538 analytical sample Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000004454 trace mineral analysis Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、高強度を要求される各種焼結部品に使用され
る部分合金化粉の分析試料調整方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for preparing an analytical sample of partially alloyed powder used for various sintered parts requiring high strength.
〈従来の技術〉
粉末冶金法により得られる焼結部品は、材料歩留りが優
れ加工費が低いので、複雑な形状の部品を低コストで得
られる利点がある。<Prior Art> Sintered parts obtained by powder metallurgy have an excellent material yield and low processing costs, so they have the advantage of being able to obtain parts with complex shapes at low cost.
また最近は、合金鋼粉によって高強度を有する焼結部品
が得られるようになり、焼結部品の通用範囲が拡がりつ
つある。特に純鉄粉をベース粉末とし、熱処理によって
微細な合金成分粒子を部分的に拡散結合させた部分合金
化粉は、例えば、特公昭４５−９６４９号および特開昭
６１−１３０４０１号に示されているように、高圧縮性
に加えて成形された後の熱処理時の寸法変化が小さく、
かつ高水準の強度を有する焼結体が得られるので注目さ
れている。Recently, sintered parts with high strength can be obtained using alloyed steel powder, and the range of applications for sintered parts is expanding. Particularly, partially alloyed powder in which pure iron powder is used as a base powder and fine alloy component particles are partially diffused and bonded by heat treatment is disclosed in, for example, Japanese Patent Publication No. 45-9649 and Japanese Patent Application Laid-open No. 61-130401. As shown in the figure, in addition to high compressibility, dimensional changes during heat treatment after molding are small,
Moreover, it is attracting attention because a sintered body having a high level of strength can be obtained.
ところでこのような部分合金化粉の合金成分は熱処理の
温度が高いとベース粉末にしっかりと固着するが、拡散
が進行し圧縮性が低下するという欠点がある。逆に熱処
理温度が低いと圧縮性の低下は防げるが合金成分のベー
ス粉末への固着力が弱く分離し易い、一般に部分合金化
粉の熱処理温度は、これらの特性を考慮して決定される
ため、 １通常の熱処理温度では添加合金粒子を１０
０％ベース粉末に固着させるまでには至っていない。そ
の結果微細な部分合金化用元素粒子は粒度の細かい側に
多（なる傾向となる。By the way, the alloy components of such partially alloyed powder will firmly adhere to the base powder when the heat treatment temperature is high, but there is a drawback that diffusion will progress and compressibility will decrease. On the other hand, if the heat treatment temperature is low, a decrease in compressibility can be prevented, but the adhesion of the alloy components to the base powder is weak and they tend to separate easily.Generally, the heat treatment temperature for partially alloyed powder is determined by taking these characteristics into consideration. , 1 At normal heat treatment temperature, the added alloy particles are 10
It has not yet reached the point where it adheres to the 0% base powder. As a result, the number of fine partial alloying element particles tends to be on the fine grain side.
〈発明が解決しようとする課題〉
ところで、このような部分合金化物を分析する場合に、
従来は分析用試料（２０〜３０ｇ）から２分器等で縮分
を繰り返して微量（０，５〜１．０ｇ）のサンプルを採
取し、合金成分の分析を行っていたが、微量まで縮分す
る場合に粒度分布が微妙に分析値に影響し、粒度分布の
細かいところが多いと合金成分の分析結果は真の値より
高くなり、逆に粗いところが多いと真の値より低くなる
傾向があり、結果として分析結果のバラツキが大きかっ
た。<Problem to be solved by the invention> By the way, when analyzing such a partially alloyed product,
Previously, a trace amount (0.5 to 1.0 g) of a sample was collected from an analytical sample (20 to 30 g) using a bisecting machine, etc., and the alloy components were analyzed. When separating particles, the particle size distribution subtly affects the analysis value, and if the particle size distribution has many fine areas, the analysis result of alloy components will tend to be higher than the true value, and conversely, if there are many coarse areas, the analysis result will tend to be lower than the true value. As a result, the analysis results varied widely.
本発明は、部分合金化物の合金成分の分析に当り、分析
結果のバラツキを減少し、分析精度を向上させることを
目的とするものである。The present invention aims to reduce variations in analysis results and improve analysis accuracy when analyzing alloy components of partially alloyed materials.
く課題を解決するための手段〉
本発明は、純鉄粉本しくは鉄合金粉の表面に１種または
２種以上の金属粒子を部分的に付着させてなる部分合金
化物を、その合金粉成分の分析用試料から微量の分析試
料採取に先立ち、８００℃以上１３００℃以下の温度で
加熱処理を行うことを特徴とする部分合金化粉の付着合
金成分の分析試料調整方法である。Means for Solving the Problems> The present invention provides a partially alloyed product obtained by partially adhering one or more metal particles to the surface of pure iron powder or iron alloy powder, and the alloy powder thereof. This is a method for preparing a sample for analysis of adhering alloy components of partially alloyed powder, which is characterized by performing heat treatment at a temperature of 800° C. or higher and 1300° C. or lower, prior to collecting a trace amount of a sample for analysis from a sample for component analysis.
〈作 用〉
本発明は、分析を行おうとする部分合金化物の分析用試
料（２０〜３０ｇ）より、分析に供するための微量分析
試料を採取するに先立ち、熱処理を施し添加合金元素を
ベース粉にほぼ１００％固着させたのち解砕し、微量の
分析試料を採取することによって分析精度の向上を図る
ものである。<Function> In the present invention, prior to collecting a trace analysis sample for analysis from an analysis sample (20 to 30 g) of a partially alloyed product to be analyzed, heat treatment is applied to add alloying elements to the base powder. After almost 100% adhesion, the particles are crushed and a minute amount of analysis sample is collected to improve analysis accuracy.
以下本発明について説明する。The present invention will be explained below.
送られてきた分析用試料をそのまま、もしくは２分器に
て縮分を繰り返し、約５〜１０グラムの重量をはかりと
り、還元ボートに均一に充填する。The sent sample for analysis may be used as it is, or it may be subjected to repeated reduction using a 2-divider, weighed to weigh approximately 5 to 10 grams, and uniformly filled into a reduction boat.
この還元ボートを加熱炉内にて８００〜１３００℃の温
度で熱処理を行う、このとき、雰囲気としてはＨ２ガス
が望ましいが、Ｎｚガスやその他の雰囲気でもかまわな
い、熱処理を行う時間は、合金化される合金の種類およ
び量（＠ｔ％）により異なるがｓｏｏ”ｃ〜１３００℃
の温度でキープ時間は３０分〜６０分が望ましい。This reduction boat is heat-treated at a temperature of 800 to 1300°C in a heating furnace. At this time, the atmosphere is preferably H2 gas, but Nz gas or other atmospheres may also be used. It varies depending on the type and amount of alloy used (@t%), but the temperature is soo”c~1300℃
The holding time is preferably 30 to 60 minutes at a temperature of .
なお、熱処理温度は８００℃以上１３００℃以下に限定
されるが、８００℃以下の温度では合金元素のベース粉
末への固着が弱く拡散の進行も充分でないので分析時の
バラツキが大きくなるからであり、一方１３００℃を越
える温度では合金粉末およびベース粉末の焼結が進みす
ぎて、焼結ケーキが固くなりすぎ、分析用サンプルの調
整が困難となり実用的でないからである。Note that the heat treatment temperature is limited to 800°C or higher and 1300°C or lower, but at temperatures below 800°C, the adhesion of alloying elements to the base powder is weak and diffusion does not progress sufficiently, resulting in large variations during analysis. On the other hand, if the temperature exceeds 1300° C., the sintering of the alloy powder and the base powder will proceed too much, and the sintered cake will become too hard, making it difficult to prepare samples for analysis, which is impractical.
なお、実際には個々の熱処理温度は、合金の種類、量（
ｗｔ％）および熱処理時間との関係を考慮して８００℃
〜１３００℃の間で適宜決定することできる。Note that the individual heat treatment temperatures actually vary depending on the type and amount of alloy (
wt%) and heat treatment time at 800°C.
The temperature can be appropriately determined between 1300°C and 1300°C.
例えばＣｕ粉末を部分合金化物された粉末の場合は８０
０〜９００℃が、またＮｉあるいはｈＯを部分合金化物
された粉末の場合には１０００〜１３００℃で熱処理す
ることが好しい。For example, in the case of partially alloyed Cu powder, 80
The heat treatment is preferably performed at 0 to 900°C, and in the case of a powder partially alloyed with Ni or hO, it is preferable to conduct the heat treatment at 1000 to 1300°C.
〈実施例〉
アトマイズ純鉄粉に計算値で４％Ｎｉ、 １．５％Ｃ
ｕ。<Example> Atomized pure iron powder with calculated values of 4% Ni and 1.5% C
u.
０．５％Ｍｏを夫々部分合金化した銅粉の分析用試料２
０ｇを２分器にて縮分を繰り返して約５グラムとし、還
元ボートに充填したものを５個用意する。Analysis sample 2 of copper powder partially alloyed with 0.5% Mo
0g was repeatedly reduced to about 5g using a bipartite machine, and 5 pieces were filled into reduction boats.
これらの還元ボートを加熱炉にてＨ２雰囲気。These reduction boats are heated in a heating furnace in an H2 atmosphere.
１０００℃で６０分間熱処理を行い、熱処理後、焼結ケ
ーキを解砕しこの５グラムの試料からさらに縮分した１
、０グラムを採取し、Ｎｉ、 Ｃｕ、 Ｍｏの分析を行
った０分析は鉄鋼材料の成分分析と同様にＪＩＳ Ｇ１
２５２に準じて行った。比較として従来と同じように何
も熱処理を行わない部分合金化物分析用試料より １．
０ ｇまで縮分して採取した５個のサンプルを分析した
。Heat treatment was performed at 1000°C for 60 minutes, and after the heat treatment, the sintered cake was crushed and further reduced from this 5 g sample.
, 0 grams were collected and analyzed for Ni, Cu, and Mo. The 0 analysis is based on JIS G1, similar to the component analysis of steel materials.
It was carried out according to 252. For comparison, a sample for partially alloyed alloy analysis without any heat treatment as in the past.1.
Five samples taken down to 0 g were analyzed.
分析結果を表１に示す。The analysis results are shown in Table 1.
〈発明の効果〉
表１の分析結果から明らかなように部分合金化物の合金
成分の分析において本発明法を用いると合金成分の分析
バラツキを小さく押えることができ分析精度が向上し、
より高度の品質管理が可能となった。<Effects of the Invention> As is clear from the analysis results in Table 1, when the method of the present invention is used to analyze the alloy components of a partially alloyed material, the analysis variation in the alloy components can be suppressed to a small extent, and the analysis precision is improved.
More advanced quality control has become possible.
特許出願人 川崎製鉄株式会社Patent applicant: Kawasaki Steel Corporation
Claims (1)
金属粒子を部分的に付着させてなる部分合金化粉を、そ
の合金粉成分の分析用試料から微量の分析試料採取に先
立ち、８００℃以上１３００℃以下の温度で加熱処理を
行うことを特徴とする部分合金化粉の分析試料調整方法
。Partially alloyed powder, which is made by partially adhering one or more metal particles to the surface of pure iron powder or iron alloy powder, is prepared by collecting a small amount of an analysis sample from a sample for analysis of the alloy powder components. A method for preparing an analysis sample of partially alloyed powder, the method comprising performing heat treatment at a temperature of 800°C or higher and 1300°C or lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63032881A JPH01209367A (en) | 1988-02-17 | 1988-02-17 | Adjustment of analysis sample for partially alloyed powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63032881A JPH01209367A (en) | 1988-02-17 | 1988-02-17 | Adjustment of analysis sample for partially alloyed powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01209367A true JPH01209367A (en) | 1989-08-23 |
Family
ID=12371218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63032881A Pending JPH01209367A (en) | 1988-02-17 | 1988-02-17 | Adjustment of analysis sample for partially alloyed powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01209367A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7477303B2 (en) | 1995-07-31 | 2009-01-13 | Sony Corporation | Anti-aliasing video camera processing apparatus and method |
-
1988
- 1988-02-17 JP JP63032881A patent/JPH01209367A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7477303B2 (en) | 1995-07-31 | 2009-01-13 | Sony Corporation | Anti-aliasing video camera processing apparatus and method |
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