JPS5916800Y2 - Shelving components for ceramic firing - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a shelf board for firing ceramics.

Ceramic firing shelves are used to store products to be fired on carts, but such shelves are usually made of silicon carbide or other fire-resistant materials that have excellent fire resistance. do.

However, although shelves made of such refractory materials have excellent resistance to thermal shock, they are susceptible to thermal distortion due to rapid temperature changes that occur when carts are placed in and out of the kiln, and cracks due to this thermal distortion occur. If it is used without being discovered, the shelf may collapse, causing great damage to the fired products or fired products.

Therefore, an idea has already been proposed in which multiple cuts are made from the edge of the shelf board, and by dispersing internal stress with each cut, thermal distortion is prevented to a certain extent compared to a case without such cuts. However, the repeated high-temperature heating and cooling that accompanies use causes cracks to occur from the tip of each notch in the direction of its axial extension, making it difficult to withstand long-term use.

The present invention has been devised to solve the above-mentioned difficulties, and the illustrated embodiments will be described in detail below.

In the figure, reference numeral 3 denotes a square plate-like body made of a refractory material such as silicon carbide, and the square plate-like body 3 has a large number of parallel plates extending from one side to the opposite side in the left-right direction. A communication hole 2 is provided in a honeycomb shape, and the length is divided into 10 equal parts from the front and rear sides, and the length is divided into 4 to 6 parts.
The cuts 4, 4 for preventing thermal distortion are formed in the communication hole 2 at the position
Each end thereof is provided facing the partition wall 1 that evenly partitions the communication holes 2 from each other, with each end facing in a direction perpendicular to the direction of.

With this structure, if you assemble the shelves by supporting them on pillars erected on a ceramic firing trolley, and put the items to be fired on the shelves and put them in the kiln, the items to be fired will be stored inside the kiln. The square plate-shaped body 3 made of a refractory material such as silicon carbide has extremely high resistance to thermal shock, and from one aspect, The other side facing this is cultivated 1
A large number of communication holes 2 are arranged in a honeycomb shape, and the communication holes 2 are evenly spaced apart from each other, and heating and cooling through the communication holes 2 are performed quickly. Therefore, rapid temperature changes caused by loading and unloading the cart into the kiln are avoided. On the other hand, it is difficult to cause cracks due to thermal strain even if The cuts 4, 4 provided to prevent thermal distortion disperse the internal stress of the square plate-shaped body 3 due to heating and cooling, and therefore can effectively prevent the occurrence of thermal distortion.

Moreover, even if the cuts 4, 4 for preventing thermal distortion develop cracks in the axial extension direction from their tips due to repeated high-temperature heating and cooling due to long-term use, the tips facing the numerous communication holes 2 Since the partition wall 1 uniformly divides the partition wall 1, cracks are generated only in the partition wall 1 facing the first tip, and further extension of the crack is prevented by the communicating hole 2 at the front end of the partition wall 1. It is something that

Furthermore, the weight reduction due to the large number of communication holes 2 is significant compared to conventional shelf boards, which makes it easier to assemble the shelves, and also has the great advantage of reducing the loss of heat carried out of the kiln when unloading the kiln. It is.

Therefore, the present invention has great practical value as it solves the problems of the conventional shelf boards for firing ceramics.

[Brief explanation of the drawing]

The drawing is a perspective view showing an embodiment of the present invention. 1: Partition wall, 2: Many communicating holes, 3: Square plate-like body, 4: Cut for preventing thermal distortion.

Claims (1)

[Scope of utility model registration request] A square plate-like body 3 made of a honeycomb-shaped refractory material has a large number of communication holes 2 evenly partitioned by partition walls 1 from one side to the other side facing the same; A shelf board for firing ceramics, characterized in that cuts 4° 4 for preventing thermal distortion are provided in a direction perpendicular to the direction of the communication hole 2, with each tip thereof facing the partition wall 1.