JPS60162567A - Die casting half mold - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold for a die casting 1, each made from half molds having a high pressure heat exchange space. The die casting mold half of the present invention has a thin wall between the die casting area of the mold half and the high pressure heat exchange space. The thin wall between the die casting area and the high pressure heat exchange space covers substantially the entire surface area between the die casting area and the high pressure heat exchange space.

The high-pressure heat exchange space allows the heat exchanger in the high-pressure heat exchange space to be made into one body so that the metal that escapes into the mold is maintained as a liquid at a high temperature with respect to the temperature at which it is introduced into the mold. . A die-casting half-mold with a thin wall of large surface area between the die-casting area of the half-mold and a high-pressure heat exchange space removes the heat obtained from the metal being cast and by utilizing a relatively high temperature heat exchange medium. Made to take advantage of the relatively low temperature difference between the heat exchange medium and the heat exchange medium.

Die casting molds currently in use utilize water at atmospheric pressure as a heat exchange medium to remove heat from the die space. Heat exchange is accomplished by drilling a set of conduits through the die block through which water is circulated, thus cooling the die space. Since the equipment is not pressurized from the die space to heat exchange during use, sufficient cooling water must be circulated to sufficiently cool the die space, so the cast metal is injected into the die space and cooled. It is solidified and taken out. The temperature of the high temperature metal introduced into the die space varies depending on the metal. Zinc is typically introduced into the mold at 426°C (800aF), while aluminum is introduced into the mold at about 648°C (120aF).
The temperature of the circulating water is typically between 21° and 93°C (70° and 200°[)], while the temperature of the circulating water is typically between 21° and 93°C (70° and 200°[)]. The resulting temperature difference between the hottest and coolest part of is about 315°C (600°) and about 538°C (below 1000°).

Because the heat exchange conduits in conventional molds are typically at least a few inches away from the die casting space and several inches apart from each other, the steel between the heat exchange conduits and the die space is exposed to the heat exchanger before the cooling effect reaches the die space. Spread the cooling effect of the cooling water flowing through the conduit. The thicker the steel between the die casting space and the heat exchange conduit of a conventional mold, the more uniform the temperature distribution across the die cast I space. On the other hand, the greater the thickness of the steel between the heat exchange conduit and the die space, the more radius the heat exchange takes place.

If the heat transfer conduits of conventional molds are placed in close proximity to the die space, they can increase the thermal fatigue that occurs within the mold due to the substantial temperature differences that occur over the narrow thickness. A further disadvantage of locating conventional heat transfer conduits in close proximity to the die space is due to the wide temperature difference between the area of the die space closest to the heat transfer conduit and the area of the die space furthest from the die casting. The temperature strain that occurs is that it can occur.

Using a die-casting mold with a pressurized heat exchange space, it is possible to increase the temperature of the heat exchange medium to any desired temperature up to 232° C. (below 450° C.). The temperature difference between the die space and the high pressure heat exchange space across the die casting area of the front wall is substantially smaller than that found with molds that are cooled by water passing through conduits within the mold. The lower temperature difference is 0.76 cm (3/10 in) due to the dimensions of the casting and the heat removed from the casting.
This results in the production of molds with die-cast walls having a similar thin thickness. The die casting area generally includes all portions of the front wall that receive hot casting material.

The low thermal differential between the die space and the high pressure heat exchange space also allows increasing the surface area of the high pressure heat exchange space in contact with the die casting area of the front wall.

Thin wall table m1ii is the die casting area of the front wall at high temperature 71 (alternating A).

With the increased surface area of the high heat exchange space in contact with the die casting area of the mold, both a large heat exchange surface and an improved temperature distribution of the die casting area of the mold can be obtained.

Parts produced in die casting molds come in an infinite variety of shapes and thicknesses. The amount of hot metal that is cooled increases with the thickness of the part being cast, decreases with the thinness of the part being molded, and is directly applied to the surface area of the part being cast.
Ren Juru. The high pressure is used to create a temperature distribution within the die casting mold of the mold that is substantially accommodating to the heat removed from the various parts of the part being cast by utilizing a high pressure heat exchange space and a high temperature heat exchange medium. The shape of the main heat exchange wall in the heat exchange space can be adapted.

Thicker parts of the part being cast must have more heat transferred from the part, while thinner parts of the part being cast must have less heat removed from the part. Requires. By substantially inverting the thickness of the main heat exchange interior of the walls of the high pressure heat exchange space to accommodate the heat removed from the various parts of the die casting area, more solidification is achieved. A cooling profile is obtained that removes more heat from parts of the casting that require less heat loss to solidification, and less heat is removed from parts of the casting that require less heat loss to solidification. Probably.

Another difficulty with the elongated tubular heat transfer conduits of conventional molds is that the continuous passage of water through these conduits induces buildup of slime or scale on the sides of the conduit walls. This problem can be avoided somewhat by conditioning or treating the cooling water before use. The scale or slime reduces normal heat transfer between the water and the mold, resulting in uneven distribution of heat within the mold. The mold must be constantly treated to remove slime or scale to maintain satisfactory heat transfer. For example, for a pressurized heat exchange medium such as water, only enough water can exchange heat to replace the vapor displaced by the heat exchange resulting from each injection of metal into the die space. It needs to be added to the space. As a result, no slime or scale forms and the above problems do not exist in the pressurized heat exchange space.

These and other features will be understood from the following disclosure and accompanying drawings.

From FIG. 1, a half mold 1 consisting of a front wall 2, a side wall 3 and a support member 4 is shown, and the J0 support member 4 is attached to the side by a bolt 5!
S! It is tightened at the bottom of 3. The thin high-pressure gasket 6, which can withstand high temperature and high pressure, ensures that the bolt 5 is tightly tightened]
It is placed between the bottom of the side wall 3 and the support part 444 before being screwed on. A high-pressure heat exchange air H'J7 is formed between the front wall 2, side wall 3, and support member 4. A large mouth valve 8 is provided in the side wall 3 to add fluid to the high pressure heat exchange space 7 when required. An outlet valve 9 is provided in the side wall 3 to remove gas from the high pressure heat exchange space 7 after each casting succession. It has a front wall or die casting area 10 which receives the hot casting liquid. The central portion of the die casting area 10 forms a portion of the die space in which the manufactured product is formed. The shape of the front wall 2 and die casting area 10 will vary from mold to mold to reflect the shape of the article being cast. The thin wall 11 between the die-casting area 10 and the high-pressure heat exchange space 7 has a thickness of about 0.76 cm (0.3 in) depending on the size and shape of the part to be cast, so that the heat is It is removed from any part of the die casting area 10. In the mold half 1 of FIG. 1, the mold 12 is formed through the high pressure heat exchange space 7 to provide additional support to the front wall 2. The protruding pin 13 is the pillar 1
Pass through 2.

FIG. 2 shows the two mold halves 14 and 15 in a closed position forming a die space 16. FIG.

Half mold 14 moves half mold 14 toward half mold 15 II
It is clamped to a block 17 which is fixed to one of the platens of the die-casting machine which moves it either the same or apart. Similarly, the mold halves 15 are clamped to a block 19 which is secured to another platen 20 of the die casting machine which moves the mold halves 15 towards and away from the mold halves 14. The mold half 14 consists of a front wall 21 , side walls 22 and a support member 23 .

A high-pressure heat exchange space 24 is formed between the front wall 21 , the side wall 22 and the support member 23 . Mold half 15 has two or more guide pins 25 and 26 retained within bushings 27 and 28, respectively, to maintain alignment of mold halves 14 and 15. When the mold halves 14 and 15 are closed as shown in FIG. 2, a die space 16 is formed between the die space areas 29 and 30 of the mold halves 14J5 and 15, respectively.

With the mold halves 14J3J and 15 in the closed position, high casting metal is introduced into the gooses 1-31 and air is passed through the exhaust channels until the die space 16 and A-bars 70-33 are filled with hot casting fluid. It is exhausted at 32. Elevated casting metal is 140.8/f9/cm2 (200
01), s, i,) 0) Pressure and 426°C
(under 800), and for aluminum it was introduced in 3
52,1/(g/cm”(5000D,s,i,)
Pressures up to 648°C (1200°F) are tested. When casting zinc, the high pressure heat exchange space 24 is at 232°C.
It has a heat exchange fluid 34 under pressure having a temperature of up to (450[deg.]). The same is true for the mold half 14.

With a concentration difference of about 204°C (400°), when zinc is cast into the die space and there is heat exchange fluid 34 in the high pressure heat exchange space, heat flows through the die space area 29 to the heat exchange fluid 34. , a small portion of the heat exchange fluid is allowed to evaporate. The vapor is passed to the atmosphere through a pressure control valve as shown in FIG.

As the casting solidifies, the mold halves 14 and 15 are moved apart by platens 18 and 20, and the casting 13.3
It is projected from the die-casting space by a projecting rod such as 6, which is not shown in the drawings.

An additional benefit of the pressurized heat exchange space 24 is that before the casting operation begins, the heat exchange fluid 34 is heated under pressure so that the temperature of each of the mold halves reaches 232°C (below 450°C) or before casting begins. It can be raised to any other desired temperature. The temperature of the mold can be controlled by a pressure horn control combination U' with the outlet valve of the high pressure heat exchange space 7 in cooperation with the inlet valve 8 and the immersion heater in the high pressure heat exchange space 7.

While the present invention has been shown and described in one embodiment, it will be apparent to those skilled in the art that the exact details of construction will vary from article to article being cast. The present invention is not limited to the precise details of construction shown in the drawings, and without departing from the spirit of the invention or exceeding the scope of the claims, those skilled in the art in the field of permanent metal molds incorporating the technology of the invention It includes changes and fluctuations that must be made.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of one half of a permanent mold, and FIG. 2 is a cross-sectional view of the permanent mold showing a device for aligning and holding the mold halves. 2.21: Front wall, 3.22: Side wall. 4.23: Support member. 7.24: High pressure heat exchange space. 8: Inlet valve, 9: Outlet valve. 10: Die casting area, 12: Column. 13: Protruding bottle. 29.30: Dice space area. 34: Heat exchange medium. 36: Projection rod. Attorney Akira Asamura (July 1980) filed an amendment to the procedure to the Commissioner of the Japan Patent Office1, indicating the case in 1982, ``Patent Application No. 908572, title of invention Die Casting Mold 3, amendment. Person involved f1 What relationship Patent applicant address Name DP M Indus 1 Helily's Restricted 4, Notification of agent Address 331 Shin-Otemachi Building, 2-2-1 Otemachi, Chiyof11-ku, Tokyo 100 5, Date of amendment order 9.A request for examination of the application has been submitted at the same time as the list of attached documents.Amendment clarified!'lll Old 1. Title of invention Die-casting mold 2. Scope of claims (1) Before having die-casting surface area a side wall extending rearward from the front wall, a member closing the bottom of the side wall, and a device for fixing the eleven members to the bottom of the side wall, the front wall; The side wall and the member (1) form a high-pressure heat exchange space, and a valve for introducing fluid under pressure into the high-pressure heat exchange space and a valve for releasing gas under pressure from the high-pressure heat exchange space are provided. A die-casting mold characterized by: (2) In the mold of the first patent claimed in the patent, the front wall extending to the die-casting surface area is thin, and the bottom of the die-casting surface of the front wall is thin. A die-casting mold characterized in that it forms the top of a high-pressure heat exchange space. (3) The thickness of the front wall in the die-casting surface area is A die-casting mold characterized in that #h is inversely proportional to the heat removed from the molded body. (4) In the mold according to claim 1 or 2, A die-cast half mold characterized in that the thickness of the part wall is as thin as possible in relation to the shape of the metal pressure horn and the shape of the 0 to be cast. (5) The metal according to claim 1 or 2. In the mold, the thickness of the front wall in the die-casting area is 0.8
A die casting mold half having a diameter of between 4 and 1.27 cm (.33 and 5 inches). (6) The die casting mold according to claim 2 or 3, wherein the surface area of the thin wall is approximately the same in both the die casting surface area of the front wall and the high pressure heat exchange space. Mold. (7) In the mold according to claim 1 or 2, a high-pressure heat exchange space heat transfer medium is enclosed, and the pressure J in the space is equal to the boiling point of the heat exchange medium. A die-casting mold characterized by being maintained at J which corresponds to a mutually supported NA mold temperature mark. (8) In the mold according to claim 1 or 2, a heat exchange medium 1fi I=J is provided in the high-pressure heat exchange space.
and the boiling point of the medium is 132° to 260°C (270°
A die-casting mold characterized in that the pressure in the high-pressure heat exchange space is maintained at a pressure between 500 and below. (9) In the mold described in IfJ in any one of claims 1, 2, 71F, and 3, one member is firmly attached to the side wall by a set of bolts via a gasket. A die-casting mold characterized by being fixed and falling. (10) The die-casting die according to claim 2, which has one or more hollow columns extending through the high-pressure heat exchange space and having an extrusion pin inside. Type. (11) A die-casting mold according to claim 10, wherein the hollow column is an integral part of the front wall. (12) The mold according to claim 10, characterized in that the one or more columns extend through the pressure surround to the front wall to support the front wall. die casting mold. (13) A die-casting mold according to claim 12, wherein the pillar is an integral part of the front wall. (14) having a front wall surrounding the die-casting surface area and an integral side wall extending rearwardly from the front wall, the front wall and the integral side wall being constructed from a single metal block; 1 member closing the bottom of the side wall, and the 11 member closing the bottom of the side wall.
a device for firmly fixing the members, the front wall, the side walls and the carrier member forming a high-pressure heat exchange space, a large mouth valve for introducing a highly humid fluid under pressure into the space; and an outlet valve for releasing gas from the W under pressure. (15) In the mold according to claim 14,
A die-casting mold characterized in that the front wall in the die-casting surface area is thin, and the bottom of the die-casting surface area of the front wall forms the top of a high-pressure heat exchange space. (16) Claim 14] fJ or the mold according to claim 15, characterized in that the thickness of the front wall facing the die-casting surface area is inversely proportional to the heat removed from the cast product to be cast. A die-casting mold. (11) In the mold according to claim 14 or 15, the thickness of the front wall of the die-casting area is as thin as possible depending on the pressure of the metal and the shape of the cast product. Features a die-cast half mold. (18) Claim 1111, paragraph 14 or 15
The thickness of the front wall of J3 in the die casting j/face area is 0.84 to 1.27 cm (,33 to,5
A die-casting mold characterized by being between (in). (19) The mold according to claim 14 or 15, characterized in that the surface area of the thin wall is approximately the same in both the die-casting surface area of the front wall and the high-temperature heat exchange space. Type. (2. In the mold according to claim 14 or 15, the heat exchange medium is enclosed in a high-pressure heat exchange space, and the pressure in the space is such that the boiling point of the heat exchange medium is maintained at 9. A die casting mold characterized in that the mold temperature is maintained at a value corresponding to the mold temperature. (2. In the mold according to claim 14 or 15, A heat exchange medium is enclosed in the !l, and the boiling point of the medium is 132° to 260°C (270°
A die-casting mold characterized in that the pressure in the high-pressure heat exchange space is maintained at a point between 500 and below. (2. A die-casting mold according to claim 14 or 15, characterized in that one member is firmly fixed to the side wall by a one-phase bolt via a gasket and falls. ( 2. In the mold according to claim 14 or 15, one or more hollow columns covering the buried bottle extend through the high-pressure heat exchange space. (24) A die-casting mold according to claim 14 or 15, characterized in that the hollow column is an integral part of the front wall. 2. The mold according to claim 14 or 15, wherein the one or more pillars extend through the pressure surround and drop down to the mUEJi wall so as to support the front wall. Characteristic die casting mold.'(26) Claims 14 and 15 7Af
a3 to the mold described in any one of item 25.
A die-casting mold characterized in that the column is an integral part of the front wall. 3. Detailed Description of the Invention The present invention relates to a die casting mold having a high pressure heat exchange space. The die casting mill mold of the present invention has a thin wall between the die casting surface area and the high pressure heat exchange space. The thin wall between the die casting area I and the high pressure heat exchange space covers almost the entire surface area between the die casting area and the high pressure heat exchange space. Due to the action of the high-pressure heat exchange space, the heat exchange medium in the high-pressure heat exchange space is maintained as a liquid at a high temperature with respect to the pouring strength of the metal to be cast. Die-casting molds having thin walls with a large surface area between the die-casting area and the high-pressure heat exchange space utilize a relatively high-temperature heat exchange medium to reduce the gap between the molten metal being cast and the heat exchange medium. This has the effect of making the temperature difference relatively small. Die casting molds currently in use utilize water at atmospheric pressure as a heat exchange medium to remove heat from the die space. This heat exchange is accomplished by passing water through the holes in the die block, thereby cooling the die. Since the heat exchange method currently in use cannot apply pressure, the die space must be sufficiently cooled so that the cast metal is injected into the die space, cooled, solidified, and removed.
A large amount of water must be circulated. The temperature of the high temperature metal introduced into the die space varies depending on the metal. Zinc is typically introduced into the mold at 426°C (below 800°C), while aluminum is introduced at about 648°C (1200°F).
), while the temperature of the circulating water is usually 21°
~93°C (70° to below 200°C). Therefore, when casting zinc and aluminum, the temperature difference between the hottest and coolest parts of a conventional mold is approximately 315
'C (600°[) and reach approximately 538°C (1000°1:). Heat exchanger holes in conventional molds are typically at least several inches apart from the die-casting space and several inches apart from each other;
It is the mold material between the heat exchange hole and the die space. The steel reduces the cooling effect of the cooling water flowing through the heat exchange holes before it reaches the die space. Because the thickness of the silk between the die-casting space and the heat exchange hole of the conventional mold is thick, the melting gradient across the die-casting space becomes increasingly flat. On the other hand, if the thickness of the steel between the heat exchange hole and the die space is large, the heat exchange will take place with a delay. If the heat exchange holes of conventional molds are located close to the die space, thermal fatigue occurring within the mold can increase due to large temperature differences across the small thickness. Another disadvantage of placing conventional heat exchange conduits in close proximity to the tie space is the wide temperature range between the portion of the die space closest to the heat transfer holes and the portion of the die space furthest from the die casting. This is due to the temperature distortion caused by the difference. Using die casting molds with pressurized heat exchange spaces, it is possible to increase the temperature of the heat exchange medium to any desired temperature up to 232°C (450°F). The temperature difference between the die space and the high pressure heat exchange space across the die casting area of the front wall is much smaller than the temperature difference for a mold that is cooled by water passing through holes in the mold. This smaller temperature difference has made it possible to produce molds with die-cast walls as thin as 0.76 cm (3/10 in), depending on the size of the casting and the heat to be removed from the casting. . The die casting area generally covers the entire portion of the front wall that receives the hot casting material. The low temperature difference between the die space and the high pressure heat exchange space also makes it possible to increase the surface area of the high pressure heat exchange space in contact with the die casting surface area of the front wall. The facing wall surface is the die-cast area of the front wall that receives the hot liquid. , Since the surface area of the high-pressure heat exchange space in contact with the die-casting surface area of the mold has been increased, both a large heat exchange surface and an improved temperature gradient of the die-casting surface area of the mold can be obtained. The parts that are Bed in the die casting mold have a variety of shapes and thicknesses. The amount of hot metal that is cooled increases with the thickness of the part being cast, decreases with the thinness of the part being cast, and is directly related to the surface area of the part being H'1M. By utilizing a high pressure heat exchange space and a heat exchange medium, the high pressure The shape of the main heat exchange wall within the heat exchange space can be determined. A large amount of heat must be transferred from the thick parts of the cast part, while a small amount of heat needs to be transferred from the thin parts of the cast part. By essentially reversing the wall thicknesses of the high-pressure heat exchange spaces in accordance with the heat removed from various parts of the die-casting surface area, it is possible to remove material from parts of the casting that require large heat losses during solidification. A thermal gradient is obtained such that less heat is removed from parts of the casting that require a small heat loss during solidification. Another disadvantage of the long-barred tubular heat exchange holes of conventional molds is that continuous flow of water through these holes can result in slime or scale build-up on the inner wall surfaces of the holes. This problem can be fixed by adjusting the cooling water before use. I! This can be alleviated somewhat by doing this. The scale or slime reduces normal heat transfer between the water and the mold, resulting in uneven distribution of heat within the mold. Therefore, the mold must be constantly treated to remove slime or scale to maintain satisfactory heat transfer. For example, when using a pressurized heat exchange medium such as water, new water is added into the heat exchange space by the amount of steam driven out by heat exchange that occurs each time metal is injected into the die space. All you have to do is refill it. As a result, the above problems do not exist in the pressure and LJk heat exchange spaces since no slime or scale is formed. The above and further features will become clearer from the following description and the accompanying drawings. Fig. 1 shows a mold 1 consisting of a front wall 2, a side wall 3, and a rear wall member 4.The rear wall 4 is fastened to the bottom of the side wall 3 by ports 1-5.It can withstand high temperature and high pressure. A thin, high-pressure gasket 6, which can be retracted, is placed between the bottom of the side wall 3 and the rear wall member 4 before the bolts 5 are tightened.A high-pressure heat exchange space 7 is provided between the front wall 2, the side wall 3 and the rear wall. part 4. An inlet valve 8 is stepped in the side wall 3 to allow fluid to be added to the high pressure heat exchange space 7 when required. [[A side wall 3 is provided to remove gas from the heat exchange space 7. The front wall 2 adjoins a tie-casting surface area 10 which receives the hot molten metal. The central part of die casting I/surface area 10 forms a part of the die space in which one poetic work is formed. The shape of the front wall 2 and the die-casting area 10 varies from mold to mold depending on the shape of the article to be cast. The thin wall 11 between the die-cast area 10 and the high-pressure heat exchange space 7 has a thickness of 0.76 CIIl (0.76 CIIl), depending on the dimensions and shape of the part to be cast and thus on the amount of heat to be removed from the die-cast part 10. , 3 inches).In the mold 1 of FIG. An extrusion bottle 13 is provided through the column 12. Figure 2 shows two molds 14 and 15 in a closed position forming a die space 16.
It is attached to a block 17 fixed to one of the platens 18 of the die-casting machine that moves the die-casting machine forward and backward relative to the other mold 15. Similarly, the other mold 15 is attached to a block 19 that is fixed to another platen 20 of the die-casting machine that moves the mold 15 forward and backward relative to the mold 14. The mold 14 includes a front wall 21, side walls 22, and a rear wall member 23. A high pressure heat exchange space 24 is formed between the front wall 21, the side walls 22 and the rear wall member 23. Mold 15 (with two or more guide pins 25 and 26 held within bushings 27 and 28, respectively, to maintain alignment of molds 14 and 15).
When 5 is closed as shown in FIG. 2, a die space 16 is formed between die space areas 29 and 30 of molds 14 and 15, respectively. When the molds 14 and 15 are in the closed position, molten metal is introduced into the gate 31 and the die space 16 and the overflow 33 are filled with molten metal, while the air in the mold is evacuated through the exhaust channel 32. If the molten metal is zinc: LJ1'4
Injected at pressures up to 0.8 Ky/cm2 (2000p, s, i,) and 426°C (below 800°C), 352,H(y/crn2 (500
pressures up to 0 p, s, i,) and 648 °C (1200
°1:) is introduced. When die casting zinc, the high pressure heat exchange space 24 contains a heat exchange fluid 34 under pressure having a temperature of up to 232 DEG C. (450 DEG 1:). This also applies to the mold 14. When zinc is cast in the die space, the high pressure heat exchange space 2
Approximately 204℃ (below 400℃) between the heat exchange fluid 34 in 4
There is a temperature difference of , and heat flows through the heat exchange fluid 34 through the die space area 29, causing a small portion of the heat exchange fluid to evaporate. Steam is forced through a pressure control valve as shown in FIG. Therefore, it is effective in cooling the mold. After the casting has solidified, the molds 14 and 15 are connected to the platen 18.
and 20, and the casting is opened by extrusion rods 13, 3
6 and other similar rods not shown in the drawings. Another effect of providing the high-pressure heat exchange space 24 is that by heating the heat exchange fluid 34 under pressure before the start of the casting operation, the temperature of the mold can be raised to 232 °C before the start of casting.
℃ (below 450° C.) or other desired temperature. The humidity of the mold can be controlled by a combination of temperature control by an immersion heater in the high-pressure heat exchange space 7 and pressure control by the artificial valve 8 and outlet valve 9 in the high-pressure heat exchange space 7. 4. Brief Description of the Drawings FIG. 1 is a sectional view of the permanent mold, and FIG. 2 is a sectional view of the permanent mold showing a device for aligning and holding the half molds. 2.21: Front wall, 3,22: Side wall. 4.23: Rear wall member. 7.24: High pressure heat exchange space. 8: Helo valve, 9: Outlet valve. 10.29.30 Japanese squid cutting area, 12:41°13
= Extrusion pin. 34: Heat exchange fluid. 36: Extrusion [] Tsurad agent Haru Asari

Claims (1)

Scope of Claims: (1) A front wall whose die-cast area is g1, a side wall extending rearward from the front wall, a support member closing the bottom of the side wall, and a support member attached to the bottom of the side wall. and a device for fixing the front wall, the side wall and the support member to form a high-pressure heat exchange space, and a fluid is introduced into the high-pressure heat exchange space at a pressure of F. and a valve for releasing gas under pressure from the high-pressure heat exchange space. (2. The mold according to claim v81, wherein the front wall in the die-casting area is thin, and the bottom of the die-casting area of the front wall forms the top of the high-pressure heat exchange space. (3) A mold according to claim 1, characterized in that the thickness of the front wall extending into the die casting area is inversely proportional to the heat removed from the die part to be cast. Die casting half mold. (4) In the mold according to claim 1 or 2, the thickness of the front wall of the die casting area is equal to the thickness of the metal indentation J.
and a die-casting half-mold characterized by its thinness () in relation to the shape of the part to be cast. (5) In the mold according to claim M1 or 2, the thickness of the front wall in the die-casting area is 0.8.
A die casting mold half having a diameter of between 4 and 1.27 cm (.33 and 5 inches). (6) The mold according to claim 2 or 3, wherein the surface area of the thin wall is approximately the same in both the die-casting area of the front wall and the high-pressure heat exchange space. Mold. (7) In the mold according to claim 1 or 2, the pressure in the high-pressure heat exchange space is maintained at a point corresponding to the humidity of the mold at which the boiling point of the heat exchange medium is maintained. A die-casting half mold characterized in that it has a heat exchange medium. (8) In the mold according to claim f FIJ item 1 or 2, the boiling point of the heat exchange medium is 132° to 260°C.
(9) Claims The die casting mold according to any one of item 1, item 2, or item 3, wherein the support member is firmly fixed to the side wall with a gasket with a space between J3 and a set of bolts. Half-mold. (10) The mold according to claim 12, characterized in that it has one or more hollow columns merging projecting pins extending through the high-pressure heat exchange space. Half-mold. (11) A die-cast half-metal mold according to claim 10, characterized in that the hollow column is an integral part of the front wall. (12. Claim 10) In the mold described in section,
A die casting mold half, characterized in that one or more molds extend through the pressure surround to the front wall so as to support the front wall. (13) A die-cast half mold according to claim 12, wherein the pillar is an integral part of the front wall. (14) having a front wall merging the die casting area and an integral side wall extending rearwardly from the front wall, the front wall and the integral side wall being formed from one metal block and closing the bottom of the side wall; a support member and a device for firmly fixing the support member to the bottom of the side wall, the front wall, the side wall a3 and the support member forming a high-pressure heat exchange space;
Introducing a fluid under pressure and at an elevated temperature into said pressure enclosure 1-
a die-casting mold half, characterized in that it has an inlet valve for releasing gas under pressure from said pressure enclosure; and an outlet valve for releasing gas under pressure from said pressure enclosure. (15) In the mold according to claim 14,
[Die casting]-half mold, characterized in that the front wall in the die-casting area is thin, and the bottom of the die-casting area of the front wall forms the top of a high-pressure heat exchange space. (16) The die casting mold according to claim 14 or 15, wherein the thickness of the front wall at the die casting face is inversely proportional to the heat removed from the die portion being cast. Half mold. (11) The mold according to claim 14 or 15, characterized in that the wall thickness of the yJ portion of the die-casting area is as thin as possible in relation to the metal pressure and the shape of the part to be cast. Die casting half mold. (18) In the mold according to claim 14 or 15, the thickness of the front wall in the die-casting area is between 0.84 and 1.27 cm (,33-,510). Features a die-cast half mold. (19) The mold according to claim 14 or 15, characterized in that the surface area of the thin wall is approximately the same both in the die casting area of the front wall and in the high temperature heat exchange space. Die casting half mold. (2. In the mold according to claim 14 or 15, the pressure in the high-pressure heat exchange space is maintained at a point corresponding to the temperature of the mold at which the boiling point of the heat exchange medium is maintained. (21) Claim 1lii! Box 14, Section 14Jf1
In the mold described in item 15, 17 points of the heat exchange medium are 13
A die-cast mold half characterized in that it has a heat exchange medium in which the pressure in the high-pressure heat exchange space is maintained at a point such that it is between 2° and 260°C (270° and 500°). The mold according to claim 14 or 15, wherein the support member is firmly fixed to the side wall with a gasket by a set of bolts spaced apart. (2 , a die-cast half metal mold J3 according to claim 14 or 15, characterized in that one or more hollow columns merging ejector pins extend through a high-pressure heat exchange space. Mold. (24) A mold according to claim 14 or 15, characterized in that the hollow columns are all integral parts of the wall. (2. Claim 15) 14] J'? or a die-casting half-metal mold according to paragraph 15, characterized in that the one or more columns extend through the pressure surround to the front wall so as to support said front wall. Mold. (26) A die-cast half mold according to any one of claims 14, 15, or 25, characterized in that the pillar is an integral part of the front wall. .