pa1778data.pdf

More documents

Recommendations

Info

$lit- \NBS)NE/$

table. Installation date: 1943. U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 185) 3. Hack Saws: There are a total of four hack saws in the building. Manufactured by Marvel Inc., they are located in the southern end of the building and consist of an entry table, hack saw station, and a delivery table. Each unit is 86'-6" long. Installation dates: 1943 and 1962. 4. Abrasive Cut-off Machines: There are two abrasive cut- off machines in the building. Both machines are laid out on a north-south axis and are located in the transfer bay. Cut-off machine No. 1 is located 25' from the western wall and approximately 10* from the northern wall of the transfer bay. Cut-off machine No. 2 is parallel to and located 12 f -6 H east of cut-off machine No.l. Each unit, consisting of a positioning table and a saw station, is approximately 35' long. Installation date: 1943. 5. Centerless Grinder: Laid out on a north-south axis, the centerless grinder is located 78* from the eastern wall of the production bays and approximately 40' south of the continuous electric furnace heat treating line. It consists of 2 lifting tables which flank the grinding station and is approximately 50' long. Installation date: 1943. 6. Bar Turners: There are two bar turners in the building. Both are laid out on a north-south axis. Bar Turner No. 1 is parallel to bar straightener No. 4, and is located 18' west of it. Bar turner No. 2 is parallel to, and is located 9* west, of bar turner No.l. Each unit is approximately 85' long. Installation date: 1943. 7. Brinell Hardness Testers: There are two Brinell hardness testers in the building. Laid out on a north-south axis, Brinell hardness tester No. 1 is located approximately 30' south of car bottom furnaces Nos. 4 and 5. About 35' in length, it consists of an entry table/test station and a hack saw table/saw station which extends parallel to each other. Brinell hardness tester No. 2 is located 10' from the western wall of the production bays and is parallel to the southern end of the continuous gas fired heat treating line. Laid out on a north-south axis, it is 90' in length and consists of an entry table/test station, followed by a hack saw table/saw station. Installation dates: 1943 and 1962. 8. Howe Scale: The 25-ton Howe scale is located 27' west of gag press No. 1. Laid out on a north-south axis, it is 34' long
and is set into the floor of the building. Installation date: 1943. HISTORY U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 18 6) The original heat treating plant was installed as part of the Defense Plant Corporation expansion in 1943. The initial purpose of the facility was to heat-treat steel bars that were to be used in the manufacture of guns, shells, and airplane parts. The plant was expanded in 1962 with the construction of a wing to the western end of the building containing additional heat treating equipment. 1 Heat treatment of steel consists of an operation or combination of operations involving the heating and cooling of the solid material for the purpose of obtaining desired physical properties. In heat treating processes, the steel is subjected to a time-temperature cycle involving two operations — heating to or above the metal's critical temperature and cooling it to below its critical temperature. The time involved in the heating process and the time it takes to cool the steel after it reached top temperature are crucial determinants in the process of transforming its physical properties. The critical temperature is the temperature at which the crystalline structure of the metal is altered. Heating steel to above its critical temperature brings it to its so called austenite or transformation stage, while cooling the metal below its critical temperature, depending on the method used in cooling, allows for its physical properties to be permanently altered in a specific manner. There are three major heat treating processes—annealing, normalizing, and quench and tempering. The first two are used to soften steel or make it more ductile. The last is used to harden and increase the toughness of steel. Annealing is a term used to mean any number of treatments which relieve stresses, and lead to the softening of steel. These treatments may be divided into two general classes—full annealing and sub-critical annealing. Full annealing consists of heating the steel bar above its critical temperature, holding this temperature for one hour per inch of cross-section, followed by slow cooling within the furnace through the critical range until transformation is complete, then ending with air cooling. In general, the slower the rate of cooling the higher the temperature at which transformation occurs and the softer the product. Sub-critical annealing consists of heating the steel just under the critical temperature, holding at this temperature
Page 1 and 2:
U.S. STEEL DUGUESNE WORKS HAER Wo.
Page 3 and 4:
U.S. STEEL DUQUESNE WORKS HAER No.
Page 5 and 6:
U.S. STEEL DUQUESNE WORKS HAER NO.
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
# U.S. STEEL DUQUESNE WORKS HAER NO
Page 15 and 16:
Page 17 and 18:
• U.S. STEEL DUQUESNE WORKS HAER
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
FART THREE: 1946-1988 U.S. STEEL DU
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
seeks to develop it into an industr
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
• northern wall and 27'-0" from t
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Installation Date: 1955. U.S. STEEL
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
cooling tower has a capacity of 190
Page 91 and 92:
* * tunnel beneath the clarifier. I
Page 93 and 94:
* U.S. STEEL DUQUESNE WORKS HAER No
Page 95 and 96:
Page 97 and 98:
# U.S. STEEL DUQUESNE WORKS HAER No
Page 99 and 100:
Page 101 and 102:
# » U.S. STEEL DUQUESNE WORKS HAER
Page 103 and 104:
• # # U.S. STEEL DUQUESNE WORKS H
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Historic Name Present Name: Locatio
Page 115 and 116:
dumped. Construction Date: 1957. U.
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
B. Hoist House,: U.S. STEEL DUQUESN
Page 135 and 136: • U.S. STEEL DUQUESNE WORKS HAER
Page 137 and 138: U.S. STEEL DUQUESNE WORKS HAER No.
Page 165 and 166: Historic Name: Present Name: Locati
Page 183 and 184: STEELMAKING PLANT - HEAT TREATMENT
Page 185: U.S. STEEL DUQUESNE WORKS HAER No.
Page 191 and 192: STEELMAKING PLANT - BASIC OXYGEN U.
Page 205 and 206: construction carbon and alloy steel
Page 209 and 210: U.S. STEEL DUQUESNE WORKS HAER NO.
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
A U.S. STEEL DUQUESNE WORKS W HAER
Page 249 and 250:
Page 251 and 252:
A U.S. STEEL DUQUESNE WORKS W HAER
Page 253 and 254:
Page 255 and 256:
• • U.S. STEEL DUQUESNE WORKS H
show all

pa1778data.pdf

Create successful ePaper yourself

Delete template?

Save as template?