JPS586752A - Coating method for coating agent on metallic mold for centrifugal casting - Google Patents

Abstract

PURPOSE:To improve casting quality and productivity by cooling the surface layer parts of the inside surface of a metallic mold, and coating a coating agent thereby decreasing the cooling rate for molten metal. CONSTITUTION:A metallic mold is rotated, and while water and a coating agent (a) are sprayed and supplied from nozzles 6, 8, the nozzles are moved from one end side of a casting space to the other side, by preceding the nozzle 6 for supplying water. The inside surface layer parts of the metallic mold are cooled forcibly by the water supplied from the preceding nozzle 6, and the agent (a) is sprayed and coated on the cooled surface layer parts. Therefore, during the time when the surface layer parts are heated by the high heat energy of the metallic mold, the agent (a) evaporates water gradually without boiling, and the agent (a) is coated smoothly on the inside surfaces of the metallic mold without surface roughening and without considerable decrease in the temp. of the metallic mold per se.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a method of applying a mold coating material to a gold product for centrifugal casting.

To improve this, it is desirable to supply a molten metal pipe to the metal movement, which has been heated to a high temperature due to the previous casting.

However, when applying a mold coating material to prevent casting baking and insertion, and to give the casting surface a smooth finish, the temperature of the mold surface to which it is applied is within the range of 500°C to 500°C. If the temperature is too high, the coating material will instantly boil and cause rough skin, so in general, mold i1K is #1.
For example, the molding material is applied after the temperature is as low as 160℃ to 200''C, and then the metal is heated, which not only wastes energy, but also takes a long time during casting, resulting in poor productivity. , Moreover, it had the disadvantage that raw!i':I strike was too strong.

In view of the above-mentioned circumstances, the present invention aims at 11# which eliminates the above-mentioned drawbacks by extremely simple means.

Next, we will explain in detail the implementation of the favorite - Wan'yo operation based on an illustrative diagram.
lJ's 11iJI Miyako - A cast-in band (
! j.
) inner surface and band (phantom, (phantom inner tank direction painted material f61
Apply and then 1fJk! , mold (1) and band (
2) - (While rotating 2J, press one pad (2)
The gold # and falling hot water that has been weighed at the same time are supplied from the gutter (!), and the hot water is cooled and recycled while maintaining its shape in a cylinder by centrifugal force. It is like making a heart attack pipe t-i type.

Visit #r! , the diameter of the metal (no. 1
Apply - m * 1 l (411 shuwei), the mold (
12, on the opposite side from the molten metal feeder (!),
+ @ A trolley (i) that can be moved freely in the axial direction and a water jet nozzle (@ 1 tll & pipe (
7) and the coating material (al O'lj output nozzle (1) for the light source.
1'i made pipe (1) t-1-Uki Niku Nozu tv
(al - (II) tThe water supply pipe (1) is placed in the circular part at a distance of Km in the axial direction of the pipe, and is placed in a cantilevered manner on the trolley (I). !!
At the same time, send water to the front water supply pipe (7).
Then, the bottle-breaking material supply pipe (JIL+) was supplied with coating material and equipment.

Using the above-mentioned coating noodles (411), apply l1lkl!! material ('lk m1ll W) to the inner waste surface of Sekisai Noodles 11JO.
goo'c~wooo ``C & A 14D Oonen state - so gold 1!! While supplying water and AM material (e+') from the nozzles ta+ and tg+, move the meat nozzle (61. (The gold IM (phantom inward surface layer) is forcibly cooled by water supply from 61, and the cooled 7 is applied to the surface layer by 1 m11-* of the coating material.

As mentioned above, when the coating material (a) is applied to the part where the surface part of 'HJ Genkinashi (1) has been instantaneously cooled, the ik#Ik energy of that surface part or Kanken (1) is A coating material (Al gradually evaporates water without boiling, does not cause rough skin, and
The mold coating material (AI
It is best to apply it smoothly on the inward side of the bulrush (1).

Then, when coating the mold/material ta+t-log, after completing the coating process on the outward route supplying cooling water, 1, 1 stop the water supply II & t- at the (k-route kneading) and apply the coating material ( Apply only the surface well, or repeat the process repeatedly. At this time, the coating material 111 applied earlier acts as a heat insulating layer and becomes glossy, so it is the same as described in 91.

Smooth coating that does not cause noodle material (Al Osmaro) can be performed.

In addition, it is desirable that the distance between the two nozzles (6) and (sub-O distribution tubes) be as close as possible to the extent that the sprayed water and the coating material i11 do not overlap. The same nozzle (3) may be in a matching state, and as shown in Fig.
, (8), in order to make the same direction phase almost the same, both nozzles A/ (61e (spray phase angle of 81 (
#t-J14 p%t11 type material supply nozzle (the vice is wrinkled in the moving direction or mining type - multiple times in the same direction, and the mold material is coated in one process (&) t ml interval Various modifications can be made, such as sleeping on a 111Kk cloth, or a combination thereof, and applying means other than spraying may be used.Furthermore, it is also possible to use gusts of air as a cooling medium.

In addition, I used the rotation function of the casting mold (mu), but on the night I rotated it for the first time, the malfunctioning nozzle (1) was removed from the blond shaft core and it was in a non-rotating state. Coating material (1) The application method is not limited, such as t-coating.

In summary, the method of applying the coating material to the gold pear for making moxibustion according to the present invention is that when the centrifugal casting mold (1) has a high #AK due to the previous casting, the cooling fluid is
jfil 1liJ PM to cool the surface layer part of the inner surface of the mold ill, and the cooled surface! It is characterized by applying mold coating material (ili) to #IIs.

That is, according to the method described above, as detailed in the Examples,
Even without maintaining the metal mold itself at a high temperature, the mold coating material (ta + tm) can be applied smoothly without boiling the mold coating material (aluminum) on the locally cooled inward surface layer of the mold. As a result, the mold (1), which has become hot due to the previous casting, can be cast in a heat storage state, and as a whole, it can be cast in a short time with no heat energy loss. It is now possible to obtain high-quality cast products with good productivity and a significant reduction in production costs.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional side view of the centrifugal casting equipment, and Figure 2 is an illustration of the application of the material to be molded. Section 1 and FIG. 8 showing the state are lFr diagrams of an example of a quake shape. If)... Centrifugal casting mold, (81...
・Mold material.

Claims (1)

[Claims] When the centrifugal casting mold (1) is at a high temperature due to the previous omitt, 19# is used to forcibly supply cooling fluid.
A method for applying a mold coating material to a centrifugal casting mold, characterized by cooling the surface layer of the inner surface of a J distribution mold (13) and applying a mold coating material (81) to the surface layer exposed to a temperature of 70.