US1624386A - Process of making a metallic reenforced refractory article - Google Patents

Description

12 1927. Apnl A. lG. BETTS PROCESS OF MAKING' A METALLIC REENFORCED REFRACTORY ARTICLE Filed April e, 1925 rlatenter! Apr. 12,` 1927.

' ANSON' G. BETTS,'OF KINDERHQOK, NEW YORK.

PROCESS or MAKING A METALLIo REENFORCED RFRACTQRY ARTICLE.

Application led April 6v, 1925. Serial No. 21,230. i

i i This invention relates to a process of making a re brick for use at high tem'-y perature and under trying conditions wherein brick fail from unequal expansion and contraction .and other causes` and which is generally known as spalling.7

The object of this invention isa process s of making abrick or refractory shape largely free Vfrom troubles `from \spalling, to-

10 gether With a method of making the same.

Other objects may be noted herein.

The principal feature of the refractory is imbedded W-ire or rods, preferably vmetallic wires, and especialy of heat-resisting metal,

like nickel-chrome Wire. The wires are integrally imbedded in the body of the brick and preserve the brick from falling to pieces from cracking under furnace conditions.

In Fig. l, I have shown in cross section a brick of refractory material -1, and imbedded wires 2, placed in regular order. In Fig. 2 I have shown a brick v1, in which short wires 2 are present in no order, resulting from the molding of a mass containing short Wires. In Fig. 3, I have shown a. block 1, adapted for suspension by means of the Wires 2, which are regularly spaced as Ishown and brought together at the top into a cable by twisting 8. Fig. 4 is a view of an arch formed by this process. vIn the manufacture of brick in the ordinary kiln burning or other high heatinv process, Wires would probably befdestroyed by the heat.

In my process, I take suitable powdered refractory material, like ground fire brick, incorporate therewith a suitable chemical bonding agent like basic aluminu1nchlo- 1 'ride solution, introduce the Wires in the manterior of the Abrick remains relatively cool` and thetendency to check in the Very hot surface layers is apt .t9 be offset by a certain softness and toughness due to the heat, and in the interior Where thev strains. and

checkingandspaling take place, and Where refractoryarticle which consists in molding such checking and spalling means a serious ner desired, and cure the product by suitafalling of refraictories into the furnace, the

Wire is effective.

In my process of making such brick andrefractory articles I have no shrinkage or suspend the brick or block, or otherwise supportit.

The product of this manufacture of: refractory may be developed in the furnace in which it is used, by preparing a mortar containing' Wires similarly to the use of hair in mortar,` and these wires may be added to the refractory mortar mix inshort cuts and regularlyv distributed by mixing, and When a furnace is being built the mortar may be used in layers between fire bricks giving an unbreakable mortar which serves as a support for adjacent bricks. arch of the furnace shown in cross section is In Fig. 4, ythe made fof refractory bricks 4, set in wireL .bound solidied'refractory mortar 5. 'which functions as a general support, and if one of the blocks tends to check 0r spall, the crack is not communicable across the wire bond plastically applied intervening refractory, so that the possibility of Whole slabs of refractory splitting off, is largely or entirely overcome by the means employed and de' scribed.

The wire or wires referred to in the claims do 4not need to be of the ordinary round form of uniform cross section, but may be flat, uneven, crimped,- ununiform,

and it is probable that )the round uniform. wire is the least favorable form of Wire for the purpose..

ill)

What I claim as new and desire to secure Y by Letters Patent, is: 1. Process of making metalllc reenforced powdered refractory grain and metallic Wire cient to crack the product and at a lower with a soluble bonding agent, and curing at temperature than that at which the said 10 ai temperature below'l that at which said wires are materially and disadvantageously Wires are seriously injured. C alected.

2. Process of making metallic reenforced In testimony whereof I have hereunto refractory article which consists in moldsigned my name. ing refractory mix with' imbedded Wires Y and'curing Without change of volume suii- ANSON G. BETTS.

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