JPH0312437Y2 - - Google Patents
Info
- Publication number
- JPH0312437Y2 JPH0312437Y2 JP16428486U JP16428486U JPH0312437Y2 JP H0312437 Y2 JPH0312437 Y2 JP H0312437Y2 JP 16428486 U JP16428486 U JP 16428486U JP 16428486 U JP16428486 U JP 16428486U JP H0312437 Y2 JPH0312437 Y2 JP H0312437Y2
- Authority
- JP
- Japan
- Prior art keywords
- coating mold
- air
- test
- test piece
- pressure chamber
- 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
- 238000012360 testing method Methods 0.000 claims description 42
- 239000011248 coating agent Substances 0.000 claims description 27
- 238000000576 coating method Methods 0.000 claims description 27
- 230000035699 permeability Effects 0.000 claims description 15
- 238000005273 aeration Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000003110 molding sand Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229920006328 Styrofoam Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
Landscapes
- Casting Devices For Molds (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は、鋳造装置における塗型の通気度試
験装置に関するものである。[Detailed Description of the Invention] Industrial Application Field This invention relates to an air permeability testing device for coating molds in casting equipment.
従来の技術及び解決しようとする問題点
発泡スチロールなどで形成した消失性模型を用
いて鋳造装置を成形する場合には、第３図に示す
様に消失性模型１の表面に耐火材を塗布して耐火
物層、即ち、塗型２を形成し、その後、この模型
１を鋳枠３内の鋳物砂４内に埋設し、湯口から注
入される溶融金属（湯）により消失性模型１をガ
ス消火させ、空洞部５を形成すると共に、空洞部
５の壁面５ａに、塗型２を形成する。Prior Art and Problems to be Solved When molding a casting device using a fugitive model made of styrofoam or the like, a refractory material is applied to the surface of the fugitive model 1 as shown in Fig. 3. A refractory layer, that is, a coating mold 2 is formed, and then this mold 1 is buried in molding sand 4 in a casting flask 3, and the fugitive mold 1 is extinguished by gas extinguishing with molten metal (hot water) injected from a sprue. Then, the cavity 5 is formed, and the coating mold 2 is formed on the wall surface 5a of the cavity 5.
この塗型２は、鋳物砂４が崩れて空洞部５に流
れ込むのを防止すると共に、湯が鋳物砂４内に浸
透するものを防止するものであるが、更に、注湯
の際に空洞部５内に発生するガスを放出せしめる
機能を有する。 This coating mold 2 prevents the molding sand 4 from collapsing and flowing into the cavity 5, and also prevents hot water from penetrating into the molding sand 4. It has the function of releasing the gas generated within 5.
そのため、塗型２には、所定の通気性が必要と
なる。そこで、周知の砂型通気度試験装置を利用
して該塗型２の通気度を測定することが考えられ
るが、この塗型２は、前述のように消失性模１の
表面に形成されているので、これを試験片にして
通気性試験を行なうことができない。 Therefore, the coating mold 2 needs to have a certain level of air permeability. Therefore, it is conceivable to measure the air permeability of the coating mold 2 using a well-known sand mold air permeability testing device, but this coating mold 2 is formed on the surface of the fugitive pattern 1 as described above. Therefore, it is not possible to conduct an air permeability test using this as a test piece.
又、塗型２は、例えば、１mm前後の模厚である
ため、破壊しやすいので、そのままの状態で通気
度試験を行なうことができない。 Moreover, since the coating mold 2 has a rough thickness of, for example, about 1 mm, it is easily destroyed, and therefore an air permeability test cannot be performed in that state.
その上、砂型通気度試験装置には、塗型２をセ
ツトする為の手段が設けられていないので、この
装置で塗型の通気度試験をすることは不可能であ
る。 Moreover, since the sand mold air permeability testing device is not provided with means for setting the coating mold 2, it is impossible to test the air permeability of the coating mold with this device.
この考案は、上記事情に鑑み、塗型の通気度試
験のできる装置を提供することを目的とする。 In view of the above circumstances, the purpose of this invention is to provide an apparatus capable of testing the air permeability of coating molds.
問題点を解決するための手段
この考案は、試験用空気の供給装置と、該供給
装置と接続管を介して連通し、かつ下端面を開放
した圧力室と、該圧力室の下端に設けられ、か
つ、通気性支持板に塗型を塗つた試験片を固定す
る手段と、前記塗型を通つた空気の量を測定する
手段と、前記塗型の通気に要する時間を測定する
手段とを備えたことを特徴とする塗型の通気度試
験装置である。Means for Solving the Problems This invention consists of a test air supply device, a pressure chamber communicating with the supply device via a connecting pipe and having an open bottom end, and a pressure chamber provided at the bottom end of the pressure chamber. , and means for fixing a test piece coated with a coating mold on an air-permeable support plate, a means for measuring the amount of air passing through the coating mold, and a means for measuring the time required for aeration of the coating mold. This is an air permeability testing device for coating molds.
作 用
通気性支持板に塗型を塗つて試験片を形成し、
この試験片を圧力室の下端に試験片固定具を介し
て固定し、圧力室の下端面を試験片で封鎖する。Function A test piece is formed by applying a coating mold to an air-permeable support plate.
This test piece is fixed to the lower end of the pressure chamber via a test piece fixture, and the lower end surface of the pressure chamber is sealed with the test piece.
そして、接続管の弁を開いて試験用空気を圧力
室に供給すると、この空気は塗型および通気性支
持板を透過して圧力室外に放出される。 Then, when the valve of the connecting pipe is opened to supply test air to the pressure chamber, this air passes through the coating mold and the breathable support plate and is discharged to the outside of the pressure chamber.
実施例
この考案の一実施例を添附図面により説明す
る。Embodiment An embodiment of this invention will be described with reference to the accompanying drawings.
第１図において、１０は、試験用空気の供給装
置で、この装置１０は、水１１を収容した水槽１
２と、空気室１３を備えた移動容器１４と移動容
器１４に連通する接続管１５と、移動容器１４の
頭部に載置された垂錘１６とから構成されてい
る。この接続管１５には、空気室１３の試験用空
気を制御する弁１７が設けられている。１８は、
圧力室で、その上端面は、ゴム柱１９で閉鎖さ
れ、その下端面は、開放されているが、その下端
外周には、ねじ部２０が形成されている。２１
は、円筒状の試験片固定具で、その内周面には、
ねじ部２０と螺合するねじ部２２と、通気穴２３
を備えた載置部２４とが形成されている。 In FIG. 1, 10 is a test air supply device, and this device 10 includes a water tank 1 containing water 11.
2, a moving container 14 provided with an air chamber 13, a connecting pipe 15 communicating with the moving container 14, and a plumb 16 placed on the head of the moving container 14. This connecting pipe 15 is provided with a valve 17 for controlling the test air in the air chamber 13. 18 is
The upper end surface of the pressure chamber is closed with a rubber column 19, and the lower end surface is open, and a threaded portion 20 is formed on the outer periphery of the lower end. 21
is a cylindrical specimen fixture, and its inner circumferential surface is
A threaded portion 22 that screws into the threaded portion 20 and a ventilation hole 23
A mounting section 24 having a mounting section 24 is formed.
２５は、リングパツキン２６によりシールされ
る試験片で、この試験片２５は、第２図に示す様
に、通気性支持板２７、例えば、フエルトやプラ
スチツクと、この支持板２７の表面に耐火材を塗
つて形成した塗型２８とから構成されている。 Reference numeral 25 denotes a test piece that is sealed by a ring seal 26. As shown in FIG. It is composed of a coating mold 28 formed by coating.
次に、この実施例の作動について説明すると、
通気性支持板２７の表面に塗型２８を塗つて試験
片２５を形成すると共に、この試験片２５を、試
験片固定具２１の載置部２４に設置し、その上に
リングパツキン２６を乗せる。 Next, the operation of this embodiment will be explained.
A coating mold 28 is applied to the surface of the breathable support plate 27 to form a test piece 25, and this test piece 25 is placed on the mounting portion 24 of the test piece fixture 21, and a ring packing 26 is placed on it. .
そして、この試験片固定具２１のねじ部２２を
圧力室１８の外周面のねじ部２０に螺合させなが
ら、圧力室１８の下端でリングパツキン２６を押
圧し、試験片２５を挟着すると共に、この試験片
２５により圧力室の下端面を封鎖する。 Then, while screwing the threaded part 22 of this test piece fixing device 21 into the threaded part 20 on the outer peripheral surface of the pressure chamber 18, the ring packing 26 is pressed at the lower end of the pressure chamber 18, and the test piece 25 is clamped. , the lower end surface of the pressure chamber is sealed with this test piece 25.
次に弁１７を開くと、移動容器１４は垂錘１６
の荷重により矢印Ａ１４方向に移動し、空気室１
３内の試験用空気は、矢印Ａ１３方向に圧送され
る。 Next, when the valve 17 is opened, the moving container 14 is moved to the vertical plumb 16.
Due to the load, the air chamber 1 moves in the direction of arrow A14.
The test air in 3 is pumped in the direction of arrow A13.
そのため、この試験用空気は、接続管１５を通
り圧力室１８に入ると共に、圧力室１８の下端面
の試験片２５を通り、即ち、塗型２８と通気性支
持板２７を通り、通気穴２３から装置外に放出さ
れる。 Therefore, this test air enters the pressure chamber 18 through the connecting pipe 15, passes through the test piece 25 on the lower end surface of the pressure chamber 18, that is, passes through the coating mold 28 and the breathable support plate 27, and passes through the ventilation hole 23. is released from the equipment.
そして、この試験用空気の量（c.c.）と、装置外
へ放出するに要する時間（sec）とにより、塗型
２８の通気度が測定される。 Then, the air permeability of the coating mold 28 is measured based on the amount (cc) of this test air and the time (sec) required for the air to be discharged outside the apparatus.
考案の効果
この考案は、以上の様に構成したので、試験片
を固定して通気度試験を行なうことができる。Effects of the invention Since this invention is configured as described above, an air permeability test can be performed with the test piece fixed.
又、通気性支持板に塗型を塗つた試験片なので
試験片全体が通気性を備える。 In addition, since the test piece was a mold coated on a breathable support plate, the whole test piece had air permeability.
従つて、このように試験片を形成することによ
り、初めて塗型の通気度試験が可能となる。 Therefore, by forming a test piece in this manner, it becomes possible to test the air permeability of the coating mold for the first time.
第１図はこの考案の実施例を示す縦断面図、第
２図は、第１図の要部拡大図で、試験片を示す
図、第３図は、一般の鋳造装置を示す縦断面図で
ある。
１０……試験用空気の供給装置、１５……接続
管、１８……圧力室、２１……試験片固定具、２
５……試験片、２７……通気性支持板、２８……
塗型。
Fig. 1 is a longitudinal sectional view showing an embodiment of this invention, Fig. 2 is an enlarged view of the main part of Fig. 1, showing a test piece, and Fig. 3 is a longitudinal sectional view showing a general casting device. It is. 10... Test air supply device, 15... Connection pipe, 18... Pressure chamber, 21... Test piece fixture, 2
5... Test piece, 27... Breathable support plate, 28...
Paint type.
Claims (1)
を介して連通し、かつ下端面を開放した圧力室
と、該圧力室の下端に設けられ、かつ、通気性支
持板に塗型を塗つた試験片を固定する手段と、前
記塗型を通つた空気の量を測定する手段と、前記
塗型の通気に要する時間を測定する手段とを備え
たことを特徴とする塗型の通気度試験装置。 A test air supply device, a pressure chamber that communicates with the supply device via a connecting pipe and has an open lower end surface, and is provided at the lower end of the pressure chamber and coats a breathable support plate with a coating mold. Air permeability of a coating mold, characterized in that it comprises means for fixing a test piece, a means for measuring the amount of air passing through the coating mold, and a means for measuring the time required for aeration of the coating mold. Test equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16428486U JPH0312437Y2 (en) | 1986-10-28 | 1986-10-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16428486U JPH0312437Y2 (en) | 1986-10-28 | 1986-10-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6371943U JPS6371943U (en) | 1988-05-13 |
| JPH0312437Y2 true JPH0312437Y2 (en) | 1991-03-25 |
Family
ID=31093260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16428486U Expired JPH0312437Y2 (en) | 1986-10-28 | 1986-10-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0312437Y2 (en) |
-
1986
- 1986-10-28 JP JP16428486U patent/JPH0312437Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6371943U (en) | 1988-05-13 |
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