EBK MANUFACTURING PROCESSES FOR ENGINEE
6th Edition
ISBN: 9780134425115
Author: Schmid
Publisher: YUZU
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Chapter 5, Problem 5.25Q
To determine
Factors that determines the time of removal of cast from the mold.
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In turbine blade casting, how is a single-crystal structure achieved?
Select one or more:
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By using a curving coil-like channel in the casting mould
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By careful control of the temperatures of the mould
d.
By introducing impurities into the molten alloy in the mould
pouring basin in a sand casting?
3. Explain why a sprue should be tapered?
4. What are the disadvantages of die casting?
5. Explain the various kinds of patterns in use. What are the allowances provided, when making a pattern?
How do the patterns differ from the casting required?
4 In sand casting, the volumetric size of the pattern is (a) bigger than, (b) same size as, or (c) smaller than the cast part? Explain your answer
Chapter 5 Solutions
EBK MANUFACTURING PROCESSES FOR ENGINEE
Ch. 5 - Prob. 5.1QCh. 5 - Prob. 5.2QCh. 5 - Prob. 5.3QCh. 5 - Prob. 5.4QCh. 5 - Prob. 5.5QCh. 5 - Prob. 5.6QCh. 5 - Prob. 5.7QCh. 5 - Prob. 5.8QCh. 5 - Prob. 5.9QCh. 5 - Prob. 5.10Q
Ch. 5 - Prob. 5.11QCh. 5 - Prob. 5.12QCh. 5 - Prob. 5.13QCh. 5 - Prob. 5.14QCh. 5 - Prob. 5.15QCh. 5 - Prob. 5.16QCh. 5 - Prob. 5.17QCh. 5 - Prob. 5.18QCh. 5 - Prob. 5.19QCh. 5 - Prob. 5.20QCh. 5 - Prob. 5.21QCh. 5 - Prob. 5.22QCh. 5 - Prob. 5.23QCh. 5 - Prob. 5.24QCh. 5 - Prob. 5.25QCh. 5 - Prob. 5.26QCh. 5 - Prob. 5.27QCh. 5 - Prob. 5.28QCh. 5 - Prob. 5.29QCh. 5 - Prob. 5.30QCh. 5 - Prob. 5.31QCh. 5 - Prob. 5.32QCh. 5 - Prob. 5.33QCh. 5 - Prob. 5.34QCh. 5 - Prob. 5.35QCh. 5 - Prob. 5.36QCh. 5 - Prob. 5.37QCh. 5 - Prob. 5.38QCh. 5 - Prob. 5.39QCh. 5 - Prob. 5.40QCh. 5 - Prob. 5.41QCh. 5 - Prob. 5.42QCh. 5 - Prob. 5.43QCh. 5 - Prob. 5.44QCh. 5 - Prob. 5.45QCh. 5 - Prob. 5.46QCh. 5 - Prob. 5.47QCh. 5 - Prob. 5.48QCh. 5 - Prob. 5.49QCh. 5 - Prob. 5.50QCh. 5 - Prob. 5.51QCh. 5 - Prob. 5.52QCh. 5 - Prob. 5.53QCh. 5 - Prob. 5.54QCh. 5 - Prob. 5.55QCh. 5 - Prob. 5.56QCh. 5 - Prob. 5.57QCh. 5 - Prob. 5.58QCh. 5 - Prob. 5.59QCh. 5 - Prob. 5.60QCh. 5 - Prob. 5.61PCh. 5 - Prob. 5.62PCh. 5 - Prob. 5.63PCh. 5 - Prob. 5.64PCh. 5 - Prob. 5.65PCh. 5 - Prob. 5.66PCh. 5 - Prob. 5.67PCh. 5 - Prob. 5.68PCh. 5 - Prob. 5.69PCh. 5 - Prob. 5.70PCh. 5 - Prob. 5.71PCh. 5 - Prob. 5.72PCh. 5 - Prob. 5.73PCh. 5 - Prob. 5.74PCh. 5 - Prob. 5.75PCh. 5 - Prob. 5.76PCh. 5 - Prob. 5.77PCh. 5 - Prob. 5.78PCh. 5 - Prob. 5.79PCh. 5 - Prob. 5.80PCh. 5 - Prob. 5.81PCh. 5 - Prob. 5.82PCh. 5 - Prob. 5.83PCh. 5 - Prob. 5.84PCh. 5 - Prob. 5.85PCh. 5 - Prob. 5.86PCh. 5 - Prob. 5.87PCh. 5 - Prob. 5.88PCh. 5 - Prob. 5.89PCh. 5 - Prob. 5.90PCh. 5 - Prob. 5.91PCh. 5 - Prob. 5.92PCh. 5 - Prob. 5.93DCh. 5 - Prob. 5.94DCh. 5 - Prob. 5.95DCh. 5 - Prob. 5.96DCh. 5 - Prob. 5.97DCh. 5 - Prob. 5.98DCh. 5 - Prob. 5.99DCh. 5 - Prob. 5.100DCh. 5 - Prob. 5.101DCh. 5 - Prob. 5.102DCh. 5 - Prob. 5.103DCh. 5 - Prob. 5.104DCh. 5 - Prob. 5.105DCh. 5 - Prob. 5.106DCh. 5 - Prob. 5.107DCh. 5 - Prob. 5.108DCh. 5 - Prob. 5.109DCh. 5 - Prob. 5.110DCh. 5 - Prob. 5.111DCh. 5 - Prob. 5.112DCh. 5 - Prob. 5.113DCh. 5 - Prob. 5.114DCh. 5 - Prob. 5.115D
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- Describe the die casting process in detail. Use neat sketches for clarity. Differentiate clearly between hot-chamber die casting and cold-chamber die casting processes. What is the difference between true centrifugal and semi-centrifugal casting? Describe the centrifugal casting process in detail. Use neat sketches to elaborate your description.arrow_forward(1) In sand casting, the volumetric size of the pattern is: (a) bigger than, (b) the same as, or (c) smaller than the cast part (2) Machining processes include which of the following (two correct answers): (a) casting, (b) drilling, (c) extrusion, (d) forging, (e) shaping, (f), and painting? (3) Aluminum sections used for making metal doors and windows are made by which process: (a) Rolling, (b) welding, (c) extrusion, (d) turning. (4) The average flow stress is the flow stress multiplied by which of the following factors: (a) n, (b) (1-n), (c) 1/n, or (d) 1/(1+n), where n is the strain hardening exponent? (5) The strength of a brazed joint is typically (a) equal to, (b) stronger than, or (c) weaker than soldered joint? (6) Thread cutting operation is normally performed on which one of the following machine tools: (a) drill press, (b) lathe, (c) milling machine, (d) planer, or (e shaper?arrow_forward2. What do the various elements that comprise the gating system? what are the pouring basin in a sand casting? 3. Explain why a sprue should be tapered? 4. What are the disadvantages of die casting? 5. Explain the various kinds of patterns in use. What are the allowances provided How do the patterns differ from the casting required? 6. Define Expendable-mold, Expendable-pattern Casting Processesarrow_forward
- Explain the significance of the "tree" in investment casting?arrow_forwardWhy Venting holes and passageways must be built in die casting and not in sand casting? Why the cost of products reduce when increase the quantity? Why the actual size and shape of the cavity must be slightly oversized the product?arrow_forwardWhat is a pattern? What are the consideration necessary while designing pattern in casting?arrow_forward
- where are the die cores placed in die casting?arrow_forwarda) What is "Strip Casting" one of the casting methods? b) Which parameters affect strip thickness in strip casting? Write 4 parameters and list them. c) In the alumina based substrate shaped by strip casting, it is seen that the cast parts are quite fragile. What parameters do you intervene in order to increase the flexibility of the casting piece? (2 parameters) Explain the reasons. (2 Reasons)arrow_forwardQ#3:(b)Explain in detail different components of a gating system in sand mold casting.arrow_forward
- Which of these factors causes more porosity to form toward the interior of a casting rather than toward the outside? (a) Gasses are less soluble in the solid metal than the liquid, so solidified areas push dissolved gasses toward the interior. (b) Casting under a vacuum causes gasses near the liquid metal surface to be drawn out of the liquid during solidification. (c) The feeding structures of the mold are designed to force entrapped air into the center of the casting. (d) Draft on the mold wall forces air bubbles toward the interior of the solidifying metal. (e) None of the above Non-eutectic alloys (most commercial alloys) solidify over a temperature range. Which of the following statements explains how this affects the casting process. (a) Solidified non-eutectic alloys are especially difficult to remove from metal dies (b) Non-eutectic alloys have significantly less fluidity than pure metals or eutectic alloys. (c) Non-eutectic alloys solidify starting from the outside of the…arrow_forwardDescribe the stages involved in the contraction of metals during casting.(a) Contraction of the molten metals as it cools prior to its solidification.(b) Contraction of the metal during phase change from liquid to solid.(c) Contraction of the solidified metals as its temperature drops to ambient temperature.(d) All of above.(e) None of above.2. What kinds of defects in castings?(a) Hot tear.(b) Surface scar.(c) Plastic deformation.(d) Ductile flow.3. How does porosity have detrimental effects on the mechanical and physical properties ofcastings?(a) Pores in castings are resulted from internal discontinuities when that are prone topropagate under external stresses.(b) The toughness of a material will decrease as a result of porosity.(c) Physical properties, such as thermal and electrical conductivity, also be adverselyaffected by porosity.(d) Pores increase the strength and elastic modulus.(e) Porosity increases both the thermal and electrical conductivity4. Thermosetting plastics can…arrow_forwardEX.3//A cylindrical riser must be designed for a sand-casting mold. The casting itself is a steel rectangular plate with dimensions 7.5 cm x 12.5 cm x 2.0 cm. Previous observations have indicated that the total solidification time (TTs) for this casting =1.6 min. The cylinder for the riser will have a diameter-to-height ratio=1.0. Determine the dimensions of the riser so that its TTS = 2.0 min.arrow_forward
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