KR20150086379A - Casting product production data management method - Google Patents

Abstract

The present invention provides a manufacturing data management method of a casting product that affects the quality of a casting product and verifies the intermediate product in a casting product which is difficult to verify after the casting product is completed. The manufacturing data management method of the cast product is to register and manage various manufacturing data of the cast product in the database (1). The manufacturing data management method of the cast product includes a first data acquisition step of acquiring manufacturing data of the die 11 in the molding step 10 in which the die 11 is manufactured, And a second data acquiring step of acquiring manufacturing data of the molten metal in the molten metal manufacturing step (30) for tapping the molten metal, wherein each of the manufacturing data obtained in the first data acquiring step and the second data acquiring step And registers them in the database 1 and manages them.

Description

[0001] CASTING PRODUCT PRODUCTION DATA MANAGEMENT METHOD [0002]

The present invention relates to a manufacturing data management method of a cast product.

Patent Document 1 discloses a method for managing the manufacturing history of a cast iron pipe, which is a conventional cast product. In the management method such as manufacturing history of the cast iron pipe, a recess forming a control number is stamped for each core corresponding to the outer end face of a flange formed in a socket of a cast iron pipe. By using this engraved core, a cast iron pipe having a control number attached thereto is manufactured. The manufacturing history data of the cast iron pipe is stored and managed for each management number. According to this management method, the manufacturing history and the like of each cast iron pipe can be grasped, and the reliability and safety of the cast iron pipe can be ensured.

Japanese Patent Laid-Open Publication No. 2012-135772

However, the management method such as the manufacturing history of the cast iron pipe in Patent Document 1 does not disclose the contents of the manufacturing history data which is stored and managed for each management number. In addition, the cast iron pipe is casted by centrifugal casting by introducing molten metal into the inside of a metal mold rotating at a high speed. This mold is used repeatedly, not in a sand mold, at the time of a demoulding process for taking out a casting product. That is, if a cast iron pipe of the same shape is used, it is manufactured using the same mold. Therefore, the molds used for casting each cast iron tube are not different from each other. Also, the mold remains even after the cast iron pipe is completed. Therefore, if the quality of the cast iron pipe is incompatible, the mold can be verified. Thus, in the management method of the production history of the cast iron pipe, there is a lack of usefulness of storing and managing data on the mold for each cast iron pipe.

On the other hand, when the casting product is cast using the casting mold, since the casting mold is broken at the time of casting the casting mold, there is no casting mold after the casting product is completed. Further, among the intermediate products (intermediates) in the production process of cast products, besides the casting mold, there is a case in which the cast product can not be verified after the cast product is completed (for example, molten metal,

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional circumstances, and it is an object of the present invention to provide a casting product which can affect the quality of a casting product, And providing a data management method.

A manufacturing data management method of a cast product of the present invention is a manufacturing data management method of a cast product that registers and manages various manufacturing data of a cast product in a database,

A first data acquiring step of acquiring the fabrication data of the oblong shape in a molding step for manufacturing a sand mold,

And a second data acquiring step of acquiring manufacturing data of the molten metal in a molten metal producing step of melting the casting metal to prepare a molten metal and tapping the molten metal,

And the manufacturing data acquired in the first data acquiring step and the second data acquiring step are associated with the corresponding cast products and registered in the database and managed.

In the manufacturing process of the cast product, the sand mold and the melt are intermediates. The condition of die and molten metal has a great influence on the quality of the casting product. However, the death penalty is broken when the frame is broken. For this reason, it is not possible to directly verify the casting after the casting product is completed. Further, the molten metal can not be directly verified after the casting product is completed. Therefore, the manufacturing data management method of the casting product is a method of managing manufacturing data of a casting product, in which the manufacturing data of the die in the molding process acquired in the first data acquiring step, and the manufacturing data of the molten metal in the molten metal manufacturing process acquired in the second data acquiring process, Registers and manages the product in relation to the database. Thereby, even after the casting product is completed, the casting and verification of the melt at the time of producing the casting product can be performed from various manufacturing data registered in the database. In the present invention, the term " associating " means a state in which various production data can be specified from a cast product by accessing a database, and a state in which a cast product can be specified from various production data It says.

Therefore, the manufacturing data management method of the cast product of the present invention can influence the quality of the cast product and verify the intermediate in the manufacturing process which is difficult to verify after the cast product is completed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a management system embodying a manufacturing data management method of a cast product according to an embodiment. FIG.
Fig. 2 is a flow chart showing the manufacturing process of the cast product of the embodiment. Fig.
Fig. 3 shows the timing of giving a serial number in the manufacturing process of the core material in the manufacturing process of the cast product of the embodiment, Fig. 3 (B) shows the timing of giving the molding serial number in the molding process, (C) is a diagram showing timings at which a melting serial number is given in a molten metal production step; Fig.
Fig. 4 (a) is a schematic view showing a mold of the embodiment, Fig. 4 (A) is a top view and a bottom view after the foaming process, Fig. 5 is a diagram showing a state in which a core is arranged in a cavity and an upper mold and a lower mold are combined. Fig.
5 is a flowchart showing timings at which the respective serial numbers are associated in the embodiment;

An embodiment in which a manufacturing data management method of a cast product of the present invention is embodied will be described with reference to the drawings.

<Examples>

As shown in Fig. 1, the manufacturing data management method of the cast product in the embodiment is to register and manage various manufacturing data in the database 1 of the manufacturing data management system. In the manufacturing process of the cast product, the database 1 registers various kinds of manufacturing data by automatic input from various instruments and sensors, or manual input by an operator using a touch panel. Further, the database 1 can be accessed from a plurality of computers 2 via a network.

As shown in Fig. 2, the casting product manufacturing process includes a molding step 10, a core manufacturing step 20, a molten metal manufacturing step 30, a pouring step 40, a molding step 50, , A demolding step (60), and a finishing step (70).

In the molding step 10, the die 11 (see Fig. 4 (C)) is manufactured. In the production process of the cast product, the mold 11 is an intermediate. The molding process 10 carries out a kneading process, a sanding process, a curing process, a chipping process, a core fitting process, and a mold coalescing process in this order . In the kneading step, a molding sand 13 to which a resin and a curing agent are added is kneaded. In the filling step, the casting mold 13 kneaded in one flask 12 in which two casting models (not shown) of the same shape are arranged in parallel is charged. In the hardening step, the molding sand 13 charged in the flask 12 is cured. In the casting process, the casting mold is taken out from the flask 12. Thus, the upper die 11A and the lower die 11B are formed (see Fig. 4 (A)). The upper mold 11A and the lower mold 11B are formed in parallel with two cavities 14A and 14B having the same shape. The upper mold 11A has a molten metal outlet 15 communicating with each cavity 14A and a gas vent hole not shown. In each of the two cavities 14B of the lower die 11B, the core 21 produced in the core manufacturing process 20 described later is arranged one by one in the core fitting process (see Fig. 4 (B)). In the mold assembly process, the upper mold 11A is combined with the lower mold 11B on which the core 21 is placed (see Fig. 4 (C)). In this manner, the sand mold 11 having the core 21 disposed in the cavities 14A and 14B is completed. The sand mold 11 can cast two castings one by one.

In this shaping step 10, as shown in Fig. 3 (B), in the shaping step, a pair of pairs of upper and lower molds 11A and 11B (ZB-1, ZB-2, ...) is assigned to each of the serial numbers. That is, as shown in Fig. 1, the molding serial number is registered in the database 1 and managed. At this time, the manufacturing data for each die 11 obtained in the first data acquiring step up to the shaping step is concatenated to the molding serial number and registered in the database 1.

The first data acquisition step is a step for acquiring the amount of addition of the resin and the curing agent added to the foundry sand 13 and the amount of the curing agent added to the casting yarn 13 per kneading die 11 (every pair of the upper die 11A and the lower die 11B) The temperature of the kneading yarn in the process, the number of times of use of the casting mold, and the curing time of the foundry sand 13 in the curing process are automatically obtained by using various measuring instruments and sensors. Further, the first data acquisition step acquires, by manual input from the touch panel, items that the operator has noticed in the center alignment step. The data to be input at this time is information such that the core 21 is tightly fitted to the cavity 14B and the core 21 is bent. Since the key fitting process is executed later than the keying process, the manually input data in the key fitting process is registered in the database 1 in association with the molding serial number at that time.

In the molding step 10, corresponding product serial numbers (CB-1, CB-2, ...) are assigned to the cast products in the core fitting process as shown in Fig. 3 (B). That is, as shown in Fig. 1, the product serial number is registered in the database 1 and managed. Also, at this point, there is no cast product. For this reason, the product serial number is assigned to each of the cavities 14A and 14B in which one cast product is molded. In addition, a product serial number is attached to the cavity surface (surface) of a predetermined portion of the upper die 11A or the lower die 11B. As a result, the product serial number is formed in the casting product as an escape character.

5, the product serial number, the molding serial number, and the later-mentioned middle serial number are registered in the database 1 and managed. Thus, by registering the product serial number, the molding serial number, and the middle serial number in the database 1 in the mass fitting process, various kinds of manufacturing data of the die 11 and the core 21 are stored in the database 1 It can certainly relate to.

In the core manufacturing process 20, the core 21 is manufactured. In the manufacturing process of the cast product, the core 21 is also an intermediate. As shown in Fig. 2, the core manufacturing process 20 carries out a firing process, a burr removal process, a granulation process, a paint drying process, and an inspection process in this order. In the firing step, a casting yarn 13 to which a resin and a curing agent are added is kneaded, and the kneaded casting yarn 13 is molded into a predetermined shape (an intermediate of the core 21) and fired. In the burr removing step, the burr formed in the intermediate body 21 is removed. In the assembling step, the core 21 is formed by assembling a plurality of intermediates of the core 21 having different shapes. In the paint drying step, a heat-resistant coating agent is applied to the core 21 and dried. In the inspecting step, the operator checks both sides of the core 21 by the naked eye of the worker. In this manner, the core 21 to be disposed in the cavity of the die 11 is completed.

In this saddle stitch manufacturing process 20, as shown in Fig. 3 (A), the saddle serial number (N-1, N-2, ...) is assigned to each core 21 in the sintering process. That is, as shown in Fig. 1, the central serial number is registered in the database 1 and managed. At this time, the firing temperature for each core 21 is acquired in the third data acquisition step, and is registered in the database 1 in association with the intermediate serial number. Further, a tape describing the serial number is affixed to each core 21.

The third data acquiring step is a step for acquiring various data of the sintering temperature in the sintering process, the concentration of the mold in the paint drying process, and the drying temperature in the paint drying process, Automatically acquire using instruments and sensors. The graphic form concentration refers to the concentration (dispersion value) of the muddy coating agent applied to the core 21. Further, the third data acquisition step acquires, by manual input from the touch panel, the things that the operator has noticed in the inspection process of the mass production process 20. Since the paint drying process and the inspection process are executed later than the burr removing process, various data acquired in these processes are registered in the database in association with the mass serial number at the time of obtaining the data.

In the molten metal producing step 30, a molten metal flowing into the cavity of the die 11 is produced. In the production process of cast products, the molten metal is also an intermediate. As shown in Fig. 2, the molten metal producing step 30 performs a metering step, a dissolving step, a component adjusting step, and a tapping step in this order. In the weighing process, various casting metals and additives dissolved in an electric furnace at one time are weighed. In the melting process, various casting metals are dissolved in an electric furnace. In the component adjusting step, the components of the molten metal in the electric furnace are adjusted. In the tapping process, the molten metal in the electric furnace is divided into three portions and treated in a treating ladle.

(S-1-1, S-1-2, S-1-3, S-2-) in the molten metal production process 30 as shown in Fig. 3 1, S-2-2, S-2-3, ...). That is, as shown in Fig. 1, the dissolution serial number is registered in the database 1 and managed. At this time, the melting serial number is combined with the manufacturing data of the molten metal for each of the tastes acquired in the second data acquisition step and registered in the database 1. In addition, this dissolution serial number is the number of S-1, S-2, ... (1), (2), and (3) are added to the processing routine three times, and each time the utensil is dispensed.

The second data acquiring step is a step of acquiring the second data acquiring step 30 in which the molten metal temperature in the electric furnace, the weight of the molten metal, the blending amount of various casting metals, the blending amount of the additive, . Further, the second data acquisition step acquires, by manual input from the touch panel, items that the operator has noticed in the tapping process.

In the pouring step 40, as shown in Fig. 2, the molten metal produced in the molten metal producing step 30 flows into the sand mold 11 completed via the molding step 10. That is, the molten metal is transferred from the processing vessel to the pouring ladle (pouring ladle), and the molten metal in the pouring die flows into the cavity from the die of the die 11. At this time, the molten metal in the molten metal is divided into three molds 11 and flows in. In the pouring process 40, as shown in Fig. 5, the molding serial number and the melting serial number are registered in the database 1 and managed. Thereby, the product serial number, the shaping serial number, the mass serial number, and the dissolution serial number are associated on the database 1. As described above, by registering the molding serial number and the melting serial number in the pouring step 40 and registering them in the database 1, the manufacturing data of the molten metal can be reliably and accurately related to each cast product.

In the forming step 50, the molten metal introduced into the die 11 is gradually cooled (slowly cooled) in the die 11 to solidify it. Thereby, the cast article is molded in the sand mold 11. At this time, the time required for cooling is automatically acquired using a meter and a sensor, and is registered in the database 1 in association with the molding serial number.

In the demolding step (60), the casting is taken out from the mold die (11). This demolding step (60) carries out a mold demolding step, an out-of-frame slow cooling step, an external shot step, and a primary inspecting step in this order. In the mold breaking process, the casting mold 11 is broken and the cast product is taken out. In the slow slow cooling step, the casting product taken out from the sand mold 11 is gradually cooled. In the external shot process, the foundry sand 13 attached to the outer surface of the casting is removed by shot blasting. In the first inspection process, the outer surface of the casting is checked by visual inspection of the worker. At this time, the operator manually inputs the facts recognized by the operator from the touch panel, and is registered in the database 1 in association with the product serial number.

In the finishing step (70), the casting is finished by casting and then shipped. The finishing step 70 carries out a barinder process, an internal shot process, a secondary inspection process, and a fraise process in this order. In the barrel process, the burr formed on the casting is removed. In the inner shot process, the foundry sand 13 attached to the inner surface of the casting is removed by shot blasting. In the secondary inspection process, the operator checks the bottom of the casting by visual inspection of the worker. At this time, the operator manually inputs the facts recognized by the operator from the touch panel, and is registered in the database 1 in association with the product serial number. In the pricing process, a predetermined portion of the casting is cut. Thus, the cast product is completed and shipped.

Thus, in the manufacturing data management method of the cast product, the product serial number, the molding serial number, the mass serial number, and the dissolving serial number are associated on the database 1. Thereby, the production data for each die 11 in the molding step 10 acquired in the first data acquiring step, the manufacturing data of the molten metal for each liquor in the molten metal manufacturing step 30 acquired in the second data acquiring step, Various manufacturing data of the cast products such as the production data for each core 21 in the core manufacturing process 20 acquired in the third data acquisition step are associated with each corresponding cast product.

Therefore, even after the casting product is completed, various production data of the casting product can be called from the product serial number attached to the casting product by using the computer 2 accessible to the database 1 via the network . Thereby, the die 11, the molten metal, and the core 21 can be verified when the cast product is manufactured. The product serial number can be called from the mass serial number, the molding serial number, and the dissolution serial number by using the computer 2 that can access the database 1 via the network. As a result, the corresponding cast product can be specified, for example, in the case where the production is continued in a state where the incompatibility occurs in a certain process.

Thus, the manufacturing data management method of the casting product of the embodiment can influence the quality of the casting product and verify the intermediate in the manufacturing process, which is difficult to verify after the casting product is completed.

In the manufacturing data management method of the cast product, the manufacturing data is acquired for each die 11, the manufacturing data of the molten metal is acquired for each ladle, the manufacturing data is acquired for each core 21, I have to. Therefore, various manufacturing data unique to each casting product can be specified not for each lot of the casting product. Therefore, it is possible to accurately grasp the factors affecting the quality of the cast product.

In the manufacturing data management method of the cast product, various serial numbers are assigned, and these serial numbers are associated with each cast product. Thus, it is possible to easily associate various manufacturing data for each cast product.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

(1) In the embodiment, the manufacturing data management method of the casting product in which the core is disposed in the cavity has been described. However, the manufacturing data management method of the casting product may be applied to the casting product without using the core.

(2) Manufacturing data other than the various manufacturing data shown in the embodiment may be registered and managed in the database.

(3) In the embodiment, two castings can be cast in one die, but one casting or three or more castings may be cast in one die.

(4) In the embodiment, the molten metal in the electric furnace is divided into three portions, and the molten metal is spouted in the molten metal. However, the molten molten metal may be divided into a plurality of portions in three steps.

(5) Timing for giving various serial numbers may be other than the timing shown in the embodiment.

(6) The various serial numbers may be in other formats than those shown in the embodiment.

1: Database
10: Molding process
11: Death Penalty
20: Core manufacturing process
21: Medium
30: Melting process
40: Pouring process

Claims (8)

A manufacturing data management method for a casting product which registers and manages various manufacturing data of a casting product in a database,
A first data acquiring step of acquiring the fabrication data of the die in a molding process for manufacturing a die,
And a second data acquiring step of acquiring manufacturing data of the molten metal in a molten metal producing step of melting the casting metal to prepare a molten metal and tapping the molten metal,
Wherein the manufacturing data relating to each of the casting products obtained in the first data obtaining step and the second data obtaining step is registered in the database and managed in association with each of the corresponding cast products. The method according to claim 1,
And a third data acquiring step of acquiring the manufacturing data of the core in the core manufacturing process for manufacturing the core assembly assembled in the die cavity,
Wherein the production data of the core material acquired in the third data acquisition step is registered in the database in association with each of the corresponding cast products and managed. 3. The method according to claim 1 or 2,
Wherein the manufacturing data of the molten metal obtained in the second data acquiring step is associated with each corresponding cast product and registered in the database and managed when the molten metal is poured into the mold. How to manage manufacturing data of a product. 3. The method of claim 2,
Wherein the manufacturing data of the heavy metal obtained in the third data acquiring step is associated with each of the corresponding cast products and is registered and managed in the database when the core is assembled in the die cavity in the shaping step Manufacturing data management method for casting products. 5. The method according to any one of claims 1 to 4,
Wherein the first data acquisition step acquires the manufacturing data for each execution mold,
And the second data acquisition step acquires the production data of the molten metal for each of the brewing operations. The method according to claim 2 or 4,
And the third data acquisition step acquires the manufacturing data for each of the plurality of pieces of manufacturing data. 6. The method of claim 5,
Wherein the molding serial number is assigned to each die die, the manufacturing data for each die die obtained in the first data obtaining step is associated with the molding serial number,
Adding a dissolution serial number to each of the tastings of the molten metal and associating the dissolution serial number with the manufacturing data of the molten metal for each of the tastes acquired in the second data acquisition step,
Wherein a product serial number is assigned to each of the cast products, and the product serial number, the molding serial number, and the dissolution serial number are associated with each other and registered in the database to manage the manufacturing data. The method according to claim 6,
A middle serial number is assigned to each of the middle letters, the manufacturing data of the middle letters acquired in the third data acquisition step is associated with the middle serial number,
Wherein a product serial number is assigned to each of the cast products, and the product serial number and the heavy serial number are registered in the database and managed.

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