Document DvaNeajZwRxRO6wn5dMy9qVLN

ISStICO JULY |, 1951 SUPERSEDES SUU.ETIN NO. 1-19-J V m Installation of PLASTIC"KiN"CHROME ORE in studded open hearth doors E. J. LAV I NO AND COMPANY REFRACTORIES DIVISION 3 PENN CENTER PUZA PHILADELPHIA 2, PENNSYLVANIA INSTALLATION OF PLASTIC "K-N" CHROME ORE IN STUDDED OPEN HEARTH DOORS Since 1940, when the first open hearth door was lined with PLASTIC "K*N" Chrome Ore, studded and ransned doors have become established practice in most all steel plants. This prsctice has increased lining life and greatly reduced overall refractory maintenance costs, as well as open hearth charging delays and ocher furnace interruptions, due to frequent door changes. Experience has shown that metal studs properly spaced and of the correct site are the most practical method of supporting the PLASTIC "K-N** in open hearth door linings. Welding has been the most widely used method, but to be effective, it must be done thoroughly in order to estab lish maximum heat transfer from stud to door, and thus cool both the studs and lining. The welded contact area on both stud and door should at least equal the cross-sectional area of the stud. Very low carbon stock is preferable. For recommended stud spacing arrangements see Pages 6 A 7 for water-cooled tank ard panel doors. \ REFRACTORY PROPERTIES OF PLASTIC "K-N" La vino PLASTIC '* K-N" Chrome Ore is the original plastic chrome ore, and was developed in the laboratories of E. J. Lavino and Company more than thirty years ago. Vnong its outstanding characteristics, as a chrome refractory, is its comparative freedom from thermal spalling and thermal expansion. Expansion allowance is not recommended, regardless of the extent or thickness of the area installed. SHIPPING DATA ON PLASTIC "K-N" PACKING Air-tight steel drums, 200 lbs. net; 9 lbs. tare; 209 lbs. gross. SaiPlENT Immediately from our plant or Distributor's stock. STOKAGC Normal, weather-protected place recoonended. HOW TO INSTALL PLASTIC "K-N" CHROME ORE The installation of PLASTIC "K-N" Chrome Ore in studded open hearth doors is simpiv and rapidly performed. It is necessary to use careful supervision, but not necesssrily ski!lea masons, for its successful application. GENERAL PREPARATORY INSTRUCTIONS In order to make a PLASTIC '*K-Nv installation with the least delay, carefully arrange the materials and equipment beforehand, as given on page 3. - 2- * 01!AMITY ESTIMATION See table below for the amount of PUSTTCK-N" required. Two-hundred pounds (one drum) of PLASTIC * K-N** fill* one cubic foot. | QUANTITY ESTIMATION TABLE j 1 AREA IN 1 SQUARE FEET * z 3 4 s 4 7 8 9 10 20 30 *0 50 POUROS OF FUSTIC THI CHESS a* * i/s- 70 i 75 1*0 1 150 ZOO 225 ZTO : 300 3*0 375 *00 *70 5*0 600 670 1*00 2000 2800 3*C0 *50 525 60S j 67J 1 750 % 1500 2250 300 0 , 3750 FOR VARIOUS ! 5* as ' 170 250 335 *20 500 590 470 750 8*0 1670 2500 33*0 *170 j I1 1 ; 1 1 i ! EQUIPMENT Provide the necessary shovels, pneumatic ra/tner and spade tool. Also a heavy tamper, and hard wood planks if these are to be used. (A) SRAOE TOOL (52* ARRROX. LENGTH) (8) GAR0EN SRAM (40* ARRROX. LENGTH) (C) BACX RILL FOCNORY TAMRER (SO* ARRROX. LENGTH) (0) ROST TAHRER (4S* ARRROX. LENGTH) - 3-