JPH041561A - Blister testing method for die casting product - Google Patents
Blister testing method for die casting productInfo
- Publication number
- JPH041561A JPH041561A JP10424890A JP10424890A JPH041561A JP H041561 A JPH041561 A JP H041561A JP 10424890 A JP10424890 A JP 10424890A JP 10424890 A JP10424890 A JP 10424890A JP H041561 A JPH041561 A JP H041561A
- Authority
- JP
- Japan
- Prior art keywords
- product
- die casting
- die
- blister
- heat
- 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.)
- Granted
Links
- 238000004512 die casting Methods 0.000 title abstract description 13
- 238000012360 testing method Methods 0.000 title abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 230000009257 reactivity Effects 0.000 claims abstract description 6
- 238000010998 test method Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052751 metal Inorganic materials 0.000 abstract description 15
- 239000002184 metal Substances 0.000 abstract description 15
- 238000005266 casting Methods 0.000 abstract description 11
- 229910052742 iron Inorganic materials 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 238000007598 dipping method Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 14
- 239000007789 gas Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、ダイカスト製品のブリスター試験方法に関
し、詳しくは製品内部のガスの巻き込み位置、量及びそ
の大きさを製品の加熱によって製品表面にあられれるふ
くれ（ちり上がり）の発生状況により確認するためのブ
リスター試験方法に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a blister testing method for die-cast products. Specifically, the present invention relates to a blister testing method for die-cast products. This invention relates to a blister test method for checking the occurrence of blisters.
〈従来の技術及びその問題点〉
一般に、ダイカスト製品のブリスター試験は製品が熱に
よって形状の変形を来たさない程度の一定温度（保持温
度）例えばアルミニウム合金にて鋳造されたアルミダイ
カスト製品の場合、５００℃位の一定温度に加温コント
ロール（保持）された中で内部のピンホールや鋳巣の巻
込まれたガス圧によって製品表面にふ（れが発生する５
００℃くらいの加熱温度域まで製品を加熱せしめてガス
の巻き込まれている位置、量及びその大きさの確認を行
なう。即ち、所定の鋳造圧力にて鋳造されたアルミダイ
カスト製品の場合、該鋳造圧力に近い圧力にて巻込みガ
スは製品内部に閉込められピンホールや鋳巣となって製
品内部に残るため、ガスの巻き込まれている位置の製品
素材が巻込まれたガス圧によって変形し表面にふくれと
なってあられれる５０（１℃位の加熱温度域までアルミ
ダイカスト製品を加熱せしめてふ（れの発生状況を見て
ガスの巻込み状況を確認している。尚、上記加熱温度域
は５００℃位が望ましい温度域とされ、斯る温度５００
℃位まで製品を加熱せしめることによってガスの巻き込
まれている全ての位置、量及びその大きさを確認できる
とされている。<Prior art and its problems> In general, blister testing of die-cast products is carried out at a constant temperature (maintenance temperature) at which the product does not undergo shape deformation due to heat, for example, in the case of aluminum die-cast products cast from an aluminum alloy. 5. When the temperature is controlled (maintained) at a constant temperature of around 500°C, the product surface bulges due to gas pressure trapped in internal pinholes and blowholes.
Heat the product to a heating temperature range of about 00°C and check the location, amount, and size of gas involved. In other words, in the case of an aluminum die-cast product that is cast at a predetermined casting pressure, entrained gas is trapped inside the product at a pressure close to the casting pressure and remains inside the product as pinholes or cavities. The product material at the location where it is rolled up is deformed by the gas pressure involved, and blisters appear on the surface. The gas entrainment situation is confirmed by looking at the heating temperature range.The above heating temperature range is said to be preferably around 500℃,
It is said that by heating the product to about ℃, it is possible to confirm the location, amount, and size of all gases involved.
ところが、従来のブリスター試験方法は５００℃位の一
定温度に加熱コントロールせしめた加熱炉（通常、熱風
炉）内にアルミダイカスト製品を投入して、製品表面に
あられれるふくれの発生状況により製品内部のガスの巻
き込まれている位置、量及びその大きさを確認する様に
していたため、表面にふくれがあられれる加熱温度域５
００℃位まで製品を加熱昇温せしめるのに時間が掛りす
ぎ、結果として数多く鋳造された製品中から選びだした
製品のみを確認するといった通常−数的に行なわれてい
る製品品質のチエツクにしか使用できなかった。However, in the conventional blister test method, an aluminum die-cast product is placed in a heating furnace (usually a hot air oven) that is heated at a constant temperature of about 500°C, and the inside of the product is determined by the occurrence of blisters on the surface of the product. Because we checked the location, amount, and size of the gas involved, we were able to confirm the heating temperature range 5 where the surface would be blistered.
It takes too much time to heat the product to around 00℃, and as a result, the product quality can only be checked numerically, such as checking only a selected product from a large number of cast products. Couldn't use it.
〈発明が解決しようとする課題〉
本発明はこの様な従来事情に鑑みてなされたものであり
、その解決しようとする技術的課題は、表面にふくれが
あられれる加熱温度域に敏速に加熱昇温せしめることが
できるブリスター試験方法を提供して、製品内部のガス
の巻き込み状況を確認しながら鋳造条件の変更及びその
設定を行ない、ガスの巻き込みが少ない鋳造管理を実現
することにある。<Problem to be solved by the invention> The present invention has been made in view of the above-mentioned conventional circumstances, and the technical problem to be solved is to quickly increase the heating temperature to a heating temperature range where blistering occurs on the surface. To provide a blister testing method that can heat the product, change and set casting conditions while checking the state of gas entrainment inside the product, and realize casting management with less gas entrainment.
〈技術的課題を達成するための手段〉
上記課題を達成するために本発明が講じる技術的手段は
、ダイカスト合金との濡れ性、反応性が低く一定温度に
加温コントロールした媒体溶湯中にダイカスト製品を浸
漬し、所定の時間が経過した後にダイカスト製品を取り
出すことを特徴とする。<Means for Achieving the Technical Problem> The technical means taken by the present invention to achieve the above-mentioned problem is to use die casting in a molten medium that has low wettability and reactivity with the die casting alloy and is heated to a constant temperature. The feature is that the product is immersed and the die-cast product is taken out after a predetermined period of time has passed.
〈作 用〉
而して、上記した本発明の技術的手段によれば、ダイカ
スト製品を一定温度に加温コントロール（保持）された
媒体溶湯中に浸漬する。このとき、ダイカスト合金との
濡れ性、反応性の低い媒体溶湯を使用しているためにダ
イカスト製品は媒体溶湯との反応による腐食等は少なく
、しかも媒体溶湯が表面に付着することなく該媒体溶湯
熱によって有効且つ敏速に加熱される。そして、予め設
定した所定の時間が経過した後に媒体溶湯中からダイカ
スト製品を取り出すことによって該製品表面にふくれが
確認される。<Function> According to the above-mentioned technical means of the present invention, a die-cast product is immersed in a molten medium whose temperature is controlled (maintained) at a constant temperature. At this time, since the molten metal with low wettability and reactivity with the die-casting alloy is used, the die-cast product is less susceptible to corrosion due to reaction with the molten metal, and the molten metal does not adhere to the surface of the molten metal. Heated effectively and quickly by heat. After a predetermined period of time has elapsed, the die-cast product is removed from the molten metal, and blisters are confirmed on the surface of the product.
〈実施例〉
本発明の実施の一例を以下説明すると、第１図は本工法
を使用するブリスター装置Ａを示し、斯るブリスター装
置Ａは鉄製ルツボ１の側周面及び底面外側に断熱材２を
密接状に設け、且つ加熱手段として鉄製ルツボ１の側周
面及び底面壁部内にシースヒータ３を巻回埋設して構成
し、前記鉄製ルツボ１にてダイカスト合金との濡れ性、
反応性が低い媒体溶湯Ｂを一定温度（保持温度）に加温
コントロールし、該溶湯Ｂ中にダイカスト製品Ｃを浸漬
して該製品Ｃを加熱せしめ所定の時間が経過した後に取
り出す。<Example> An example of the implementation of the present invention will be described below. Fig. 1 shows a blister device A using this construction method, and such a blister device A has a heat insulating material 2 on the outside of the side circumferential surface and bottom surface of an iron crucible 1. are arranged in close contact with each other, and a sheath heater 3 is wound and buried in the side peripheral surface and bottom wall of the iron crucible 1 as a heating means, and the wettability with the die-cast alloy in the iron crucible 1 is improved.
The medium molten metal B with low reactivity is controlled to be heated to a constant temperature (holding temperature), the die-cast product C is immersed in the molten metal B, the product C is heated, and the product C is taken out after a predetermined period of time has elapsed.
尚、図中４は鉄製ルツボ１の開口部を閉鎖する鉄や耐火
物などの所望の材料にて形成した開閉蓋である。In the figure, reference numeral 4 denotes an opening/closing lid made of a desired material such as iron or refractory, which closes the opening of the iron crucible 1.
次に、本工法と従来法のダイカスト製品Ｃをふくれ発生
温度域まで加熱昇温するために掛る時間を下記の実験条
件により行なった比較例を説明する。Next, a comparative example will be described in which the time taken to heat the die-cast products C of the present method and the conventional method to the temperature range where blistering occurs under the following experimental conditions.
ａ、製品材料：ＡＤＣＩ２（アルミニウム合金ダイカス
ト１２種）
ｂ、製品形状：第２図に示す
（製品の重量１２７．３ ｇ）
Ｃ０測温位置（温度センサーの挿入位置）：第２図のＡ
−Ａ断面中心部
ｄ、保持温度（本工法は溶湯温度、従来法は炉内温度）
： ５００℃位
ｅ、製品加熱温度（ふくれ発生温度域）：５００℃位
尚、ここで本工法は媒体溶湯Ｂとして鉛（ｐ ｂ）を用
い、この鉛をブリスター装置Ａの鉄製ルツボ１内で溶解
し鉛溶湯を一定温度に加温コントロール（保持）する。a. Product material: ADCI2 (12 types of aluminum alloy die casting) b. Product shape: Shown in Figure 2 (Product weight: 127.3 g) C0 temperature measurement position (temperature sensor insertion position): A in Figure 2
-A cross section center d, holding temperature (molten metal temperature for this method, furnace temperature for conventional method)
: Approximately 500℃ e, Product heating temperature (blistering temperature range): Approximately 500℃ In this method, lead (PB) is used as the molten metal B, and this lead is placed in the iron crucible 1 of the blister device A. Controls (maintains) the temperature of molten lead at a constant temperature.
而して、アルミ （ＡＤＣ１２）ダイカスト製品の加熱
昇温状態を第３図（本工法）、第４図（従来法）に昇温
曲線で夫々示す様に従来法の場合はアルミダイカスト製
品が５００℃位の加熱温度に達するまでに２０ｍ１ｎ掛
るのに対し、本工法の場合は１．０ｍ１ｎである。As shown in Fig. 3 (this method) and Fig. 4 (conventional method), which show the temperature rise state of aluminum (ADC12) die-cast products by heating curves, respectively, in the case of the conventional method, the aluminum die-cast product It takes 20 m1n to reach the heating temperature of about °C, whereas in the case of this method, it takes 1.0 m1n.
従って、本工法はアルミダイカスト製品を鉛溶湯中に浸
漬してから１．０ｍ１ｎ経過した後に取り出すことによ
って、製品内部のガスの巻き込み位置、量及びその大き
さを表面にあられれたふくれによって確認することがで
きることから、１．０ｍ１ｎ毎にて製品内部のガスの巻
き込み状況を敏速に確認しながらダイカストマシンの鋳
造条件、例えば射出機構のプランジャー速度の低速、高
速を変更したり、低速から高速に切換わるタイミングを
変更して射出スリーブ内におけるアルミ溶湯への空気の
巻き込みを少なくするといった射出条件などの変更及び
その設定を行ない、それによってピンホールや鋳巣の少
ない製品を鋳造する鋳造条件を適確に判断することがで
きるため、高い品質の製品を鋳造する鋳造管理が実現で
きる。Therefore, in this method, by immersing an aluminum die-cast product in molten lead and taking it out after 1.0 m1, the position, amount, and size of gas entrained inside the product can be confirmed by checking the bulges formed on the surface. Therefore, it is possible to quickly check the gas entrainment situation inside the product every 1.0 m1 and change the casting conditions of the die-casting machine, such as changing the plunger speed of the injection mechanism from low to high speed, or from low to high speed. By changing and setting injection conditions, such as changing the switching timing to reduce the entrainment of air into the molten aluminum inside the injection sleeve, we can optimize the casting conditions to cast products with fewer pinholes and cavities. Since accurate judgment can be made, casting management that produces high quality products can be realized.
尚、本工法使用のブリスター装置Ａは鉄製ルツボ１に熱
を蓄熱しながら媒体溶湯Ｂを加温せしめるために、媒体
溶湯Ｂの温度管理を高い精度のもとで行なうことができ
るものである。The blister device A used in this method heats the molten metal B while storing heat in the iron crucible 1, so that the temperature of the molten metal B can be controlled with high precision.
〈発明の効果〉
本発明のブリスター試験方法は押上の如く構成してなる
から、ダイカスト製品を一定温度に加温コントロールさ
れた媒体溶湯熱によって有効且つ敏速にふくれが表面に
あられれる加熱温度域例えば５００℃位に加熱昇温せし
めることが出来る。<Effects of the Invention> Since the blister testing method of the present invention is configured in a push-up manner, the die-casting product can be heated to a constant temperature in a heating temperature range in which blisters can be effectively and quickly formed on the surface by the heat of the molten metal in a medium that is controlled to a certain temperature. The temperature can be raised to about 500°C.
従って、製品内部のガスの巻き込み状況を確認しながら
ダイカストマシンの鋳造条件の変更及びその設定を行な
うことができるため、ガスの巻き込みが少ない高い品質
のダイカスト製品を鋳造する鋳造管理をブリスター試験
方法にて実現することが出来る。Therefore, it is possible to change and set the casting conditions of the die-casting machine while checking the gas entrainment situation inside the product, so the blister test method can be used to control casting to cast high-quality die-cast products with less gas entrainment. It can be realized by
依って、所期の目的を達成し得た。Therefore, the intended purpose was achieved.
第１図は本発明ブリスター試験方法に使用したブリスタ
ー装置の一例を示す縦断面図、第２図は本工法と従来法
の加熱昇温実験に使用したダイカスト製品の試料を示す
、第３図は本工法で得られた昇温曲線を示す実験グラフ
、第４図は従来例で得られた昇温曲線を示す実験グラフ
である。
尚、図中
Ｂ；媒体溶湯（鉛溶湯）
Ｃ：ダイカスト製品Fig. 1 is a vertical cross-sectional view showing an example of a blister device used in the blister testing method of the present invention, Fig. 2 shows a die-cast product sample used in the heating temperature increase experiment of the present method and the conventional method, and Fig. 3 FIG. 4 is an experimental graph showing the temperature rising curve obtained by this method, and FIG. 4 is an experimental graph showing the temperature rising curve obtained by the conventional method. In addition, B in the figure: Medium molten metal (lead molten metal) C: Die-cast product
Claims (1)
温コントロールした媒体溶湯中にダイカスト製品を浸漬
し、所定の時間が経過した後にダイカスト製品を取り出
すことを特徴とするダイカスト製品のプリスター試験方
法。A pristar test method for die-cast products, which is characterized by immersing the die-cast product in a molten medium whose wettability and reactivity with the die-cast alloy is controlled at a constant temperature, and taking out the die-cast product after a predetermined period of time has elapsed. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10424890A JPH0781970B2 (en) | 1990-04-18 | 1990-04-18 | Blister test method for die casting products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10424890A JPH0781970B2 (en) | 1990-04-18 | 1990-04-18 | Blister test method for die casting products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH041561A true JPH041561A (en) | 1992-01-07 |
| JPH0781970B2 JPH0781970B2 (en) | 1995-09-06 |
Family
ID=14375637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10424890A Expired - Lifetime JPH0781970B2 (en) | 1990-04-18 | 1990-04-18 | Blister test method for die casting products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0781970B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006330239A (en) * | 2005-05-25 | 2006-12-07 | Kyocera Mita Corp | Image forming apparatus |
| CN101957292A (en) * | 2010-10-18 | 2011-01-26 | 重庆大学 | Static pressure blister test fine loading control method |
| JP2020008283A (en) * | 2018-07-02 | 2020-01-16 | 中部電力株式会社 | Blister tester and method |
| JP2020008284A (en) * | 2018-07-02 | 2020-01-16 | 中部電力株式会社 | Blister tester and test method |
| JP2021103121A (en) * | 2019-12-25 | 2021-07-15 | 日本坩堝株式会社 | Blister testing machine and blister testing method |
-
1990
- 1990-04-18 JP JP10424890A patent/JPH0781970B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006330239A (en) * | 2005-05-25 | 2006-12-07 | Kyocera Mita Corp | Image forming apparatus |
| CN101957292A (en) * | 2010-10-18 | 2011-01-26 | 重庆大学 | Static pressure blister test fine loading control method |
| JP2020008283A (en) * | 2018-07-02 | 2020-01-16 | 中部電力株式会社 | Blister tester and method |
| JP2020008284A (en) * | 2018-07-02 | 2020-01-16 | 中部電力株式会社 | Blister tester and test method |
| JP2021103121A (en) * | 2019-12-25 | 2021-07-15 | 日本坩堝株式会社 | Blister testing machine and blister testing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0781970B2 (en) | 1995-09-06 |
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