JPS6036882A - Baking method utilizing attachment ring - 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] (Objective of the Invention) Even when the shape of a fired product is modified, revised, or new, the attachment link made of fired alumina can be used to replace the conventional tightening link. This invention relates to a firing method using an attachment ring for soft porcelain, which allows the firing of products with different shapes of sills I in a firing room.

(Prior Art) Conventionally, bone china has been burned using the downlight 6 method as shown in FIGS. 1 to 3. In the case of hard porcelain firing, this is SK9 to 5K13 firing, and mullite and silica are +! Compared to AI'd, in the case of bone china, anorthite and β-zotetracalcium tricalcium remain in flames at SK8 to 9, indicating density treatment, and the darkening progresses rapidly. Low pit deformability in hot conditions. For this reason, the desired product shape is obtained by the down-firing method, which allows the product to conform to the chestnut surface during the firing process. Therefore, I want to have a good time! It is essential that the main shape of the tochi mask in No. 6 is the same as the shape of the mystery item.

Thus, when modifying or revising the shape of the fired product, the shape of the moving surface for fine firing must also be changed.

Conventionally, as a countermeasure for this, the method (1) is to create a new H "fired material with the desired moving surface shape," or, as shown in No. 5181, the current method (9.
A method of applying several surfaces 4 made of a material A with excellent durability and a firing sheath I made of the same phase component C.
) etc. have been adopted. However, in method (1), the work process starting from manufacturing the open molding mold takes a lot of time and costs, so method 5 is generally the same as the method (2) described above.
It is supported by the number of planes method. In addition, if we take into account the cost fα and the remaining price if we dispose of the 6a yoke r(6a) while it still has a useful life remaining and only change its shape, it will be economical [19 The losses are extremely heavy.

On the other hand, attachment 111j indicates product) 1? as shown in Figure 5. JfiM must be performed to ensure that the shape is the same as the shape, so in order to do this, the top surface is inspected with a gauge and fired, then footing is performed on the surface, and the finish is checked while checking with the gauge again. Since the old glaze on both sides is the same material as the glaze firing, which involves a complicated work process, the glaze firing shrinkage is large, and therefore the shrinkage during firing is also large, so cracks may appear on all sides and fine surfaces may be damaged. Because defects such as peeling and peeling occur, regular inspections are carried out. Work was needed to repair the RV. In addition, since the several sides are burnt sheathed on the surface between the shims, if this tsuketsu is removed, the top surface of the shims will be damaged, so it is necessary to attach another ashthorn. Only similar products could be shared. Furthermore, a press machine had to be used to form the chestnut, and therefore the cost of a multi-sided molding pattern was prohibitive.

(Structure of the Invention) The present invention eliminates these drawbacks and provides a method that is inexpensive and allows a desired shape to be formed into a 1M1 flight. The embodiment will be described with reference to FIGS. 6 and 9. Select the compaction machine 1 (U, tB) that has a shape similar to the desired product shape (cross-sectional shape) from among the compaction machines that have been used conventionally, and share the raw material for large-sized alumina products. The core of attachment ring z (zb, 2a) is poured into a plaster mold to form a ring with the cross-sectional shape of the gap between the compaction and the product, and the core of the compacted attachment ring z (zb, 2a) is placed between the compaction and the product using this compaction gap. 1
(IA, IB) in a position that matches the core of product 3.
(3b, 3d) is placed and compacted and fired.In mass production, the compacting and firing interval is 1.
Align the center of attachment ring 2 with , and install it in a semi-fixed manner.

For semi-fixed installation, use a gauge to mark the position of the attachment ring 2 in the tightening gap 1, apply CMC (carboxyl methyl cellulose, mm) liquid in several places, and apply the welding shaft in between, and wait until it dries. Place the attachment ring 2 according to the mark and fix it with adhesive, and either dry it and weld it, or use it as it is for tightening and firing to fix it.

CMC is used for temporary fixing and to prevent the attachment ring 2 from shifting during the kiln filling process, and it will decompose and burn at the beginning of firing, but the welding shaft will melt and stick at the compaction temperature. Will it not cause misalignment? 8. Since the worn glaze is vitreous and weak in strength, if an attachment ring with the shape and dimensions determined based on the design is available to match the desired product shape, the replacement work can be done extremely easily and in a short time. is possible.

At present, with the changing tastes of Sui porcelain products, diversified raw M styles are required in small quantities of a wide variety of products, and if we keep a stock of sheaths with shapes that correspond to these, it will be a unique one between Shimeyakima. The number of such devices is enormous, and as mentioned above, their production requires an extremely large amount of time and expense.

(Function of the invention) The attachment ring 2 installed so as to match the core of the sintering space l is attached to the alumina refractory Kawara f1. This attachment ring is made by pouring the mud into a stone K-shape with a cross-sectional shape that has a gap between the sintering space and the main part, and then using this sintering space to form it with high precision by firing. If you place the core on top of 2 and finish product 3, stack them according to the required number, put them in a furnace, raise the temperature, and fire them, product 3 will be created.
softens and appropriately follows the attachment ring 2, and shrinks to obtain the desired shape of the product 3 (3b, 3d).

In this case, it is necessary to have eight positions supported by at least three points (bottom 5, rim 6, photometer 7).

Alumina refractory 6-1 is used for the attachment ring 2, and its coefficient of thermal expansion is 6 x 10 °C.
A carporundum refractory is used between the compactors and has a coefficient of thermal expansion of 4×10°C. When using other old models with large holes, it is generally desirable that the length be as short as possible to minimize the difference in thermal expansion coefficient. Practically speaking, the difference 6-1 in expansion coefficient between the attachment ring and the compaction is preferably 3×10° C. or less.

(Effects of the invention) By adopting the present invention, it is possible to eliminate the above-mentioned drawbacks, and it is easy to make several types of attachment rings made of alumina refractories by using the conventionally used sintering space as is. By exchanging the attachment ring, it is possible to obtain several types of closed compaction spaces, and by using a semi-fixed method, it is possible to obtain a product with a stable shape without any slippage.

Therefore, the number of types of compacting and firing intervals can be kept to a minimum, and the number of compacting intervals can be used as long as the life expectancy, inventory management and factory management are reduced, and it is easy to produce products with stable shapes. The present invention can improve the yield of the product, and the effects of the present invention on price and production are extremely significant. Also,
Alumina ■ "4 No expensive molds are required to form the attachment ring by pouring the raw material slurry for fireworks into the W-shaped stone.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view before compaction when the product 3a having the shape shown in Fig. 3 is compacted using the compaction interval IA, and Fig. 2 is the same but 3 shows the shape of the product 3a after firing, (A) is a front view, and (B) is a side and sectional view. Figures 4 (-r) and (b) show the shape of another product 3b, (a) is a front view, (b) is a side view and a sectional view, and Figure 5 uses the sheath IA of Figure 1. FIG. 6 is a cross-sectional view of the product 3b shown in FIG. 4 after the product 3b is compacted and fired using the attachment ring 2b of the present invention. be. Fig. 7 is a cross-sectional view of a product 3c having the shape shown in Fig. 8, which is compacted using a sheath IB designed for compacting, and Fig. 8 shows a product 3C compacted and fired with a sheath IB. , (A is the front view, (
B) is a side and cross-sectional view, and Fig. 9 shows the diameter and curve of the y-shaped product 3d (No. 1 O) using the sheath IB in Fig. 7.
(A) is a front view, (D) is a side view, and (D) is a side view and FIG. (Explanation of symbols of main parts) 1 (IA, IB)...Shimeyaki scabbard 2 (2b
, 2t1) ... Attachment ring 3 (
3a, 3b, 3c, 3d) ・----Product 4...
...With chestnut 5...Bottom 6...Rim 3rd opening (A) (B) -; Scold =? Figure 8 Figure 10

Claims (2)

[Claims] (1) Alumina refractory Kawahara fl11 is applied to a plaster mold with a gap in the cross-sectional shape between the compaction chamber and the product that are to be shared.
．． Attachments that have been poured with slurry, released and dried, placed one to several pieces with their cores aligned in the compaction space 1a, sealed, and taken out after compaction firing in the same manner as the firing of the product. Place one ring in the burning box with the core aligned,
A firing method using an attachment ring characterized in that a molded product is further placed on top of the molded product, and a plurality of these compacting spaces are stacked and fired in a firing furnace. (2) The firing method using an attachment ring according to claim 1, characterized in that the core of the attachment ring 2' is semi-fixedly installed so as to match the core of the attachment ring.