30° TIG welding standard example Find the procedure parameters for the 3mm thickness plate ( consider it stainless steel for the first attempt and mild steel in second attempt) 150
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- Q1-A shielded metal arc welding operation is performed on steel at E = 30 volts and I = 225 amps. The heat transfer efficiency fi= 0.85 and melting efficiency f₂=0.75. The unit melting energy for steel Um = 10.2 J/mm3. Solve for: (a) the rate of heat generation at the weld and (b) the volume rate of metal welded25 58. Filler rod material is same base metal used in gas welding process. Select one: True FalseAzt Qet If Chao.7 cm) for weld , fincd (Iimax) for figure blow: l00 225mm of f=400W 150mm 45.27 mlam? answer: Tomax
- An axially-loaded welded angular connection is shown SD-002 . The angular section 150 x 100 x 10 mm having an area of 2400 mm? is welded to a gusset plate having a thickness of 10 mm. All steel is A 36 (Fy = 248 MPa, Fu = 400 MPa) and E (70) electrodes (Fu = 484 MPa) is used. Using the shielded metal-arc welding process. Compute the value of "a" if T = 500 kN. (Please do not round-off to whole number the required thickness, use the exact (2 decimal) value.) 150 mm SD-002A GTAW operation is performed on low carbon steel, whose unit melting energy is 10.3 J/mm3. The welding voltage is 22 volts and the current is 135 amps. The heat transfer factor is 0.7 and the melting factor is 0.65. If filler metal wire of 3.5 mm diameter is added to the operation, the final weld bead is composed of 60% volume of filler and 40% volume base metal. If the travel speed in the operation is 5 mm/sec, determine (a) cross-sectional area of the weld bead, and (b) the feed rate (mm/sec) at which the filler wire must be supplied.Yivat(d) Hiw@: what alead (F) regquired to sperate the riveted plates shocun in figure? * = (80 (Givet) Fis = 1-7 ) Mpa. %3| d. (Yivet) = 15 mm 12/24/2020
- Using SMAW process, E70 electrodes and an A572 steel. Determine the length of the side fillet welds for the full capacity the 125x100x10mm angle tension member as shown below. Assume that the member is subjected to repeated stress variations making any connection eccentricity undesirable. Check the block shear strength of the member. Assume that the WT chord has sufficient strength to develop the weld strengths and the thickness of its web is 12mm. Use U = 0.87 for class use and LRFD Method only9) The peak temperature experienced by the partially refined grain zone during welding of medium carbon steel is Higher than liquidus temperature In between liquidus and solidus temperature In between upper and lower critical temperature O Lower than lower critical temperature8 mm thick plates of S275 steel will be welded by SMAW, SAW, GTAW, GMAW and PAW processes. Evaluate weld groove preparation, welding parameters, welding consumables (electrode, shielding gas etc. ) heat input range, process advantages and economy for each welding process.
- Answer by true (T) or false (F) for the folling sentences 1. Fusion welding means that the two surfaces to be joined and the filler metal are meling during welding and then solidifying in similar menner to local casting process. 2. In oxyacetylene welding process, the welding is done using oxidizing flame only. 3. Explusive welding process produces strong joints of dissimilar materials that are not weldable by are. 4. Hot working leads to eliminating the porosity in the metal and increasing the strength and hardness. 5. Work hardening is a characteristic induced in the processing part because of the heat treatment.☆ 的 D قائمة القراءة Name of the welding defect shown in figure is O a. Incomplete fusion O b. Slag inclusion O c. Porosity O d. UndercutsIt is desired to determine the cost of the submerged arc welding operation in the preceding problem, including electric power cost but excluding work material costs. Power during arc-on time = 9,000 W, and cost of electricity = $0.15/kWH. The labor cost rate = $33.00/hr and the SAW equipment cost = $20.00/hr (including applicable overheads). The cost of each spool of electrode wire = $50.00. The cost of granular flux used in each cycle = $2.00. What is the welding cost of each completed tube?