Transporting member for heating furnace

A technology for heating furnaces and components is applied in the fields of thermal shock resistance and corrosion resistance, and improving the thermal deformation resistance of conveying components for heating furnaces, and can solve the problems of low thermal shock resistance, damage to conveying components for heating furnaces, and thermal shock. and other problems, to achieve the effect of high thermal deformation resistance, adhesion prevention, and durability improvement

Active Publication Date: 2015-07-01
NORITAKE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a conventional conveying member for a heating furnace in which an inner tubular member is formed of a member having low thermal shock resistance such as a SiC material is used in a heating furnace with a large temperature difference in order to rapidly heat an object to be heated, the following problems occur: Problem: The conveying member for the heating furnace may be damaged due to the thermal shock given to the outer tubular member of the conveying member for the heating furnace by contact with the object to be heated with a relatively large temperature difference

Method used

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  • Transporting member for heating furnace
  • Transporting member for heating furnace
  • Transporting member for heating furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] figure 1 It is a side view of the continuous conveyance type heating furnace 12 provided with the conveyance roller 10 for heating furnaces which concerns on one Example of this invention. figure 2 yes figure 1 The II-II arrow sectional view of the continuous conveyor heating furnace 12. The continuous conveyor heating furnace 12 is provided with: a heat insulating material 14 for keeping the inside of the furnace at a high temperature; The conveying roller 10 for heating furnace that is conveyed from one end of the longitudinal direction of the furnace body 18 to the other end; the conveying roller support device 22 that rotatably supports the two ends of the conveying roller 10 for heating furnace; The rotatably supported heating furnace uses a roller driving device (not shown) that rotates and drives the conveyor roller 10 ; and a vertically elongated heater 24 that heats the inside of the furnace body 18 to a high temperature. The furnace body 18 has: a furnace ...

experiment example

[0048] First, test samples No.1-N0.4 of the conveying roller 10 for a heating furnace were manufactured from a ceramic pipe 70, a metal pipe 68, and an insulating material 72 in such a manner as to satisfy the conditions in Table 1, and applied to a continuous conveying type heating furnace 12. Among them, the ceramic tube 70 is made of silicon carbide, and is a ceramic tube formed by an outer diameter of 34 mm and an inner diameter of 24 mm; The metal pipe 68 with variously changed intervals on the peripheral surface; the heat insulating material 72 is the heat insulating material 72 whose thickness is variously changed so as to fill the interval between the ceramic pipe 70 and the metal pipe 68 . The nickel alloy described as the material of the metal pipe constituting the test sample No. 4 is, for example, a solid solution strengthening type having a composition of 72% by mass of Ni, 14 to 17% by mass of Cr, and 6 to 10% by mass of Fe. Nickel-based heat-resistant alloys. N...

Embodiment 2

[0058] Next, another embodiment of the present invention will be described. In addition, in the following examples, the same code|symbol is attached|subjected to the part which is substantially the same as the above-mentioned example, and detailed description is abbreviate|omitted.

[0059] Figure 5 It is a side view illustrating a batch heating furnace 76 to which a furnace conveyor roller 74 according to another embodiment of the present invention is applied, Figure 6 yes Figure 5 The Ⅵ-Ⅵ arrow sectional view of the batch heating furnace 76 in Figure 7 yes Figure 6 The VII-VII arrow sectional view of the batch heating furnace 76 in FIG. The batch heating furnace 76 is composed of the following parts: a furnace body 78 composed of a heat insulating material 14 and a shell 16 covering the heat insulating material 14; The object to be heated 80 is transported in one direction to the prescribed position for heat treatment and transported from the prescribed position to...

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Abstract

A transporting member for a heating furnace, which is high in thermal deformation resistance and thermal impact resistance, is provided. A transporting roller (10) for the heating furnace is formed by laminating a metal pipe (68) and a ceramic pipe (70) in an integrating manner, wherein thermal impact resistance and corrosion resistance of the metal pipe (68) are higher than that of the ceramic pipe (70); the ceramic pipe (70) is disposed at the inner side of the metal pipe (68) and is higher in thermal deformation resistance than the metal pipe (68); and the metal pipe (68) and the ceramic pipe (70) are separated by a heat-resistance insulating material (72). Accordingly, transmission of thermal impact generated in the metal pipe (68) having better thermal impact resistance than the ceramic pipe (70) by supporting a heated object (20) to the ceramic pipe (70) is inhibited by the heat-resistance insulating material (72), thus reducing damage to the ceramic pipe (70) caused by thermal impact. The ceramic pipe (70) having better thermal deformation resistance than the metal pipe (68) can function as a core material of the metal pipe (68), and therefore the transporting roller (10) with good thermal deformation resistance, corrosion resistance and thermal impact resistance is provided.

Description

technical field [0001] The present invention relates to a conveying member for a heating furnace that supports an object to be heated in a heating furnace, and particularly relates to a technique for improving the thermal deformation resistance, thermal shock resistance, and corrosion resistance of the conveying member for a heating furnace. Background technique [0002] Conventionally, as a member for supporting and conveying an object to be heated in a heating furnace for heat-treating an object to be heated, a conveying member for a heating furnace each composed of a single member of metal or ceramics has been used. However, metals have lower thermal deformation resistance than ceramics, and are prone to thermal deformation at high temperatures, that is, creep deformation. Therefore, conveying members for heating furnaces made of metals cannot be used for transportation at high temperatures that cause creep deformation. Heating furnace for heating purposes. In addition, ...

Claims

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Application Information

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IPC IPC(8): F27B9/24
CPCB65G39/02F27B9/24F27B9/2407
Inventor 村坂和哉神田武幸植原孝德植田洋俊石川宽明
Owner NORITAKE CO LTD
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