JPH0443983B2 - - Google Patents
Info
- Publication number
- JPH0443983B2 JPH0443983B2 JP13529985A JP13529985A JPH0443983B2 JP H0443983 B2 JPH0443983 B2 JP H0443983B2 JP 13529985 A JP13529985 A JP 13529985A JP 13529985 A JP13529985 A JP 13529985A JP H0443983 B2 JPH0443983 B2 JP H0443983B2
- Authority
- JP
- Japan
- Prior art keywords
- workpiece
- metal
- deposits
- molten metal
- oil
- 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.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 239000002184 metal Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 17
- 235000019198 oils Nutrition 0.000 description 17
- 239000010802 sludge Substances 0.000 description 8
- 229910020220 Pb—Sn Inorganic materials 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 229910052745 lead Inorganic materials 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F4/00—Processes for removing metallic material from surfaces, not provided for in group C23F1/00 or C23F3/00
- C23F4/04—Processes for removing metallic material from surfaces, not provided for in group C23F1/00 or C23F3/00 by physical dissolution
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は金属不要付着物の除去方法に関し、
特に金属やセラミツクなどのワークピースの処理
過程でその表面に付着した金属粉やスラジを除去
するのに用いられる、金属不要付着物の除去方法
に関する。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a method for removing unnecessary metal deposits,
In particular, it relates to a method for removing unnecessary metal deposits, which is used to remove metal powder and sludge that adhere to the surface of workpieces such as metals and ceramics during the processing process.
（従来技術）
たとえば焼成済のセラミツクや金属あるいは半
導体素子もしくは混成集積回路などのワークピー
スの処理過程においては、第２図に示すように、
そのワークピース１の表面にたとえば金属あるい
はその酸化物、炭化物などのスラジ２が付着する
ことがある。このようなスラジは後の処理のため
に除去する必要がある。(Prior Art) For example, in the process of processing workpieces such as fired ceramics, metals, semiconductor devices, or hybrid integrated circuits, as shown in FIG.
Sludge 2 of, for example, metal or its oxides or carbides may adhere to the surface of the workpiece 1. Such sludge must be removed for later processing.
従来の除去方法としては、スラジ２の融点以上
に油を加熱しておき、その中へワークピース１を
浸漬して揺動させる方法がある。この方法は、高
温の油中に漬けられたワークピース１の表面のス
ラジ２が油の温度によつて溶けることを利用す
る。 A conventional removal method involves heating oil to a temperature higher than the melting point of the sludge 2, and immersing the workpiece 1 in the oil and shaking the oil. This method utilizes the fact that sludge 2 on the surface of a workpiece 1 immersed in hot oil melts due to the temperature of the oil.
（発明が解決しようとする問題点）
従来の油を用いる除去方法では、たとえば300
℃以上に安定して耐え得る油がなく、油の劣化が
激しく、したがつて実際上はそのような油は１回
限りで使い捨てにされる。したがつて、単に不要
付着物を除去するという補助的な工程のために膨
大な費用がかかり、したがつてそれが製品価格に
反映され、製品そのものが高価になつてしまう。(Problem to be solved by the invention) In the conventional removal method using oil, for example, 300
There is no oil that can stably withstand temperatures above 0.degree. C., and the oil deteriorates rapidly, so in practice such oils are used only once and are disposable. Therefore, the auxiliary process of simply removing unnecessary deposits requires a huge amount of cost, which is reflected in the product price, making the product itself expensive.
それゆえに、この発明の主たる目的は、より安
価にワークピースに付着した金属不要付着物の除
去方法を提供することである。 Therefore, the main object of the present invention is to provide a method for removing unnecessary metal deposits from a workpiece at a lower cost.
（問題点を解決するための手段）
この発明は、ワークピースに付着した金属付着
物と合金化する溶融金属中にワークピースを浸漬
してその付着物を除去するようにした、金属不要
付着物の除去方法である。(Means for Solving the Problems) This invention provides a method for removing unnecessary metal deposits by immersing the workpiece in molten metal that alloys with the metal deposits attached to the workpiece. This is the removal method.
（作用）
ワークピースに付着した金属不要付着物は溶融
金属中に拡散してその溶融金属と合金化する。し
たがつて、その金属不要付着物はワークピースか
ら除去される。(Function) Unnecessary metal deposits adhering to the workpiece diffuse into the molten metal and become alloyed with the molten metal. The metal waste deposit is thus removed from the workpiece.
（発明の効果）
この発明によれば、ワークピースに付着した不
要付着物が容易にかつ確実に除去できる。すなわ
ち、この発明によれば、高温に耐える油を用いる
必要がないので、材料費が安価になり、したがつ
て製品も安価になる。さらに、この発明は、金属
不要付着物が溶融金属中に拡散することを洗浄原
理としているため、ワークピース表面の微細な凹
凸に入り込んだ不要付着物もきれいに除去でき、
したがつて得られる製品の信頼性が向上する。(Effects of the Invention) According to the present invention, unnecessary deposits attached to a workpiece can be easily and reliably removed. That is, according to the present invention, there is no need to use oil that can withstand high temperatures, so the cost of materials is reduced, and therefore the product is also reduced in cost. Furthermore, since the cleaning principle of this invention is that unnecessary metal deposits are diffused into the molten metal, unnecessary deposits that have gotten into the minute irregularities on the surface of the workpiece can be removed cleanly.
The reliability of the resulting product is therefore improved.
この発明の上述の目的、その他の目的、特徴お
よび利点は、図面を参照して行なう以下の実施例
の詳細な説明から一層明らかとなろう。 The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.
（実施例）
第１図はこの発明の一実施例を示す図である。
まず、網かご１２と洗浄容器１４とが準備され
る。網かご１２中には第２図に示すようにその外
表面に金属スラジなどの付着物２が付着している
ワークピース１が入れられる。そして、ワークピ
ース１は、その網かご１２中において、たとえば
150〜180℃に予熱される。(Embodiment) FIG. 1 is a diagram showing an embodiment of the present invention.
First, the mesh basket 12 and the cleaning container 14 are prepared. As shown in FIG. 2, a workpiece 1 having deposits 2 such as metal sludge attached to its outer surface is placed in a mesh basket 12. As shown in FIG. Then, the workpiece 1 is placed in the mesh basket 12, for example.
Preheated to 150-180℃.
別の洗浄容器１４にはヒータ１６が設けられ、
この容器１４中には溶融金属１８が溜められ、こ
の溶融金属１８の上層にはたとえば大豆油のよう
な油２０が溜められる。溶融金属１８としては、
金属不要付着物２がPbの場合にはそれと合金化
するSnが用いられる。そして、不要付着物２が
たとえばPbであり、溶融金属１８がたとえばSn
である場合、そのSnはヒータ１６によつてたと
えば260〜270℃で溶融される。 Another cleaning container 14 is provided with a heater 16,
A molten metal 18 is stored in the container 14, and an oil 20, such as soybean oil, is stored in the upper layer of the molten metal 18. As the molten metal 18,
When the unnecessary metal deposit 2 is Pb, Sn, which is alloyed with it, is used. The unnecessary deposit 2 is, for example, Pb, and the molten metal 18 is, for example, Sn.
In this case, the Sn is melted by the heater 16 at, for example, 260 to 270°C.
その後、網かご１２内に入れられた予熱済のワ
ークピース１を容器１４内の溶融金属１８中にた
とえば30〜60秒浸漬する。このとき、ワークピー
ス１に付着した金属スラジたとえばPbは溶融金
属１８たとえばSn中に拡散され合金化（Pb−
Sn）する。したがつて、そのような不要付着物
がワークピースから除去される。そして、網かご
１２を容器１４から引き上げ、たとえばフレオン
などの溶剤でその引き上げの際にワークピースに
付着した油を洗浄する。 Thereafter, the preheated workpiece 1 placed in the mesh basket 12 is immersed in the molten metal 18 in the container 14 for, for example, 30 to 60 seconds. At this time, metal sludge such as Pb adhering to the workpiece 1 is diffused into the molten metal 18 such as Sn and alloyed (Pb-
Sn) to do. Such unwanted deposits are thus removed from the workpiece. The mesh basket 12 is then lifted from the container 14, and oil adhering to the workpieces during the lifting is cleaned with a solvent such as Freon.
溶融金属１８上に浮かされている油２０は、そ
の溶融金属１８の酸化を防ぐとともに、ワークピ
ース１を引き上げるときワークピース１にその溶
融金属が付着するのを防止する役目を果たす。す
なわち、油２０では、PbやSnが酸化されにくい
ため溶融したSnまたはPb−Sn合金の表面張力が
大きくなり、ワークピース表面にそれらが付着し
にくくなるのである。 The oil 20 floating on the molten metal 18 serves to prevent the molten metal 18 from oxidizing and to prevent the molten metal from adhering to the workpiece 1 when the workpiece 1 is pulled up. That is, in the oil 20, since Pb and Sn are not easily oxidized, the surface tension of molten Sn or Pb-Sn alloy increases, making it difficult for them to adhere to the workpiece surface.
溶融金属１８がたとえばSnである場合、付着
物としてのPbと合金化してSn：Pbが６：４（182
℃）まで融点は下がり続ける。そして、その融点
になると溶融金属１８を交換すればよい。 If the molten metal 18 is Sn, for example, it will be alloyed with Pb as a deposit and the Sn:Pb ratio will be 6:4 (182
The melting point continues to decrease until ℃). Then, when the melting point is reached, the molten metal 18 may be replaced.
なお、金属不要付着物２がCuであれば溶融金
属１８としてはPb−SnあるいはZnが用いられ、
付着物がAgであればPb，Pb−SnあるいはZnが
用いられ、AuであればZnが、そしてAlであれば
Znが、それぞれ利用可能である。溶融金属１８
としてZnが用いられる場合、Znは融点が420℃と
高いため、それらの酸化を防止するために油を浮
かせることはできず、この場合は、たとえば粒径
が数μm〜200μm程度の無機物粉末たとえばSiO2
を用いる。これら油や無機物粉末を必ずしも用い
なくてもこの発明の目的は達成し得る。 In addition, if the unnecessary metal deposit 2 is Cu, Pb-Sn or Zn is used as the molten metal 18,
If the deposit is Ag, Pb, Pb-Sn or Zn is used, if it is Au, Zn is used, and if it is Al, then Pb, Pb-Sn or Zn is used.
Zn is available respectively. molten metal 18
When Zn is used as a solvent, it is impossible to float it on oil to prevent its oxidation because Zn has a high melting point of 420°C. SiO2
Use. The object of the present invention can be achieved without necessarily using these oils or inorganic powders.
第１図はこの発明の一実施例を示す図である。
第２図は金属不要付着物が付着したワークピース
を示す図である。
図において、１はワークピース、２はスラジ
（不要付着物）、１２は網かご、１４は洗浄容器、
１６はヒータ、１８は溶融金属、２０は油を示
す。
FIG. 1 is a diagram showing an embodiment of the present invention.
FIG. 2 is a diagram showing a workpiece to which unnecessary metal deposits have adhered. In the figure, 1 is a workpiece, 2 is sludge (unnecessary deposits), 12 is a mesh basket, 14 is a cleaning container,
16 is a heater, 18 is a molten metal, and 20 is oil.
Claims (1)
去する方法であつて、 その付着物と合金化する溶融金属中に前記ワー
クピースを浸漬してその付着物を除去するように
した、金属不要付着物の除去方法。[Claims] 1. A method for removing unnecessary metal deposits attached to a workpiece, the workpiece being immersed in molten metal that alloys with the deposits to remove the deposits. A method for removing unnecessary metal deposits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13529985A JPS61291986A (en) | 1985-06-20 | 1985-06-20 | Removing method for metallic unnecessary deposit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13529985A JPS61291986A (en) | 1985-06-20 | 1985-06-20 | Removing method for metallic unnecessary deposit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61291986A JPS61291986A (en) | 1986-12-22 |
| JPH0443983B2 true JPH0443983B2 (en) | 1992-07-20 |
Family
ID=15148455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13529985A Granted JPS61291986A (en) | 1985-06-20 | 1985-06-20 | Removing method for metallic unnecessary deposit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61291986A (en) |
-
1985
- 1985-06-20 JP JP13529985A patent/JPS61291986A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61291986A (en) | 1986-12-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |