EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 9780100793439
Author: KALPAKJIAN
Publisher: YUZU
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Chapter 11, Problem 14RQ
How are shell molds produced?
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Chapter 11 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 11 - Describe the differences between expendable and...Ch. 11 - Name the important factors in selecting sand for...Ch. 11 - What are the major types of sand molds? What are...Ch. 11 - List important considerations when selecting...Ch. 11 - What is the function of a core?Ch. 11 - What is the difference between sand-mold and...Ch. 11 - What are composite molds? Why are they used?Ch. 11 - Describe the features of plaster-mold casting.Ch. 11 - Name the type of materials typically used for...Ch. 11 - What are the advantages of pressure casting over...
Ch. 11 - List the advantages and limitations of die...Ch. 11 - What is the purpose of a riser? What is a blind...Ch. 11 - Explain the purpose of a vent and a runner in a...Ch. 11 - How are shell molds produced?Ch. 11 - What keeps the mold together in vacuum casting?Ch. 11 - What is squeeze casting? What are its advantages?Ch. 11 - What are the advantages of the lost-foam casting...Ch. 11 - Prob. 18RQCh. 11 - What are the reasons for the large variety of...Ch. 11 - Why are risers not as useful in die casting as...Ch. 11 - Describe the drawbacks to having a riser that is...Ch. 11 - Why can blind risers be smaller than open-top...Ch. 11 - Why does die casting produce the smallest cast...Ch. 11 - Why is the investment-casting process capable of...Ch. 11 - What differences, if any, would you expect in the...Ch. 11 - Recently, cores for sand casting have been...Ch. 11 - Would you recommend preheating the molds used in...Ch. 11 - Give reasons for, and examples of, using die...Ch. 11 - Referring to Fig. 11.3, do you think it is...Ch. 11 - Explain why squeeze casting produces parts with...Ch. 11 - How are the individual wax patterns attached on a...Ch. 11 - Describe the measures that you would take to...Ch. 11 - You have seen that, even though die casting...Ch. 11 - How are hollow parts with various cavities made by...Ch. 11 - It was stated that the strength-to-weight ratio of...Ch. 11 - How are risers and sprues placed in sand molds?...Ch. 11 - In shell-mold casting, the curing process is...Ch. 11 - Why does the die-casting machine shown in Fig....Ch. 11 - Prob. 39QLPCh. 11 - What are the benefits to heating the mold in...Ch. 11 - The slushy state of alloys refers to that state...Ch. 11 - Can a chaplet also act as a chill? Explain.Ch. 11 - Rank the casting processes described in this...Ch. 11 - Estimate the clamping force for a die-casting...Ch. 11 - In sand casting, it is important that the...Ch. 11 - If an acceleration of 100 g is necessary to...Ch. 11 - A jeweler wishes to produce 24 gold rings in one...Ch. 11 - Describe the procedures that would be involved in...Ch. 11 - The optimum shape of a riser is spherical to...Ch. 11 - Sketch and describe a casting line consisting of...Ch. 11 - Outline the casting processes that would be most...Ch. 11 - Make a list of the mold and die materials used in...Ch. 11 - Write a brief paper on the permeability of molds...Ch. 11 - Light metals commonly are cast in vulcanized...Ch. 11 - It sometimes is desirable to cool metals more...Ch. 11 - The part shown in Fig. P11.59 is a hemispherical...Ch. 11 - Porosity that has developed in the boss of a...Ch. 11 - In Fig. II.1b the gemstones have been cast in...
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- Why the chills are used in moulds in casting?arrow_forwardwhere are the die cores placed in die casting?arrow_forward4) List the passageway (gating system) elements in sand casting moulds and show them with drawing? Draw the stress-strain curve and gives the stress and strain equations for both Engineering and True stress-strainarrow_forward
- Calculate mould dimension for sprue runner and in-gate, the material using fluorothermoplastic and using injection molding. Question: 1. explain the steps for making a mold 2. If possible, use a simulation of the position where the defect will occur 3. Calculate to make mold male and female, the shape is near net shape product and determine material for dies, the liquid materials is 167°C Guidelines Sprue Gate Guidelines L 50% W1 A1 2-3° W1 20- 100% of W2 R1 > 1.5 mm T2 75-100% T1 (part thickness) D1 125-400% T1 (part thickness) D1 100-300% T1 (part thickness) Part Thickness 1.6 mm R > 1 mm (0.040") % Shrinkage Parallel to Flow 4.0-4.5 % Shrinkage Perpendicular to Flow 4.3-4.8 T3 100-200 % (part thickness)arrow_forwardno hurry ............. a very good handwriting with every step to be mentioned to understand the answer easily step to follow given requirement solution result if not followed the above steps , ready for consequences i want the solution with a very good handwritingarrow_forwardSketch a simple part that can be green sand or injection molded. Sketch at least one view of the part. Draw the part in casting orientation. Choose the parting line and label it. Decide if cores are necessary and label them.arrow_forward
- Highlighting the positive pattern making allowances, explain in detail with a neat sketch and labelling the same, the 2-box molding procedure for the following component considering it as a split pattern. Through Hole (a)arrow_forward1) a) Explain the differences, advantages, disadvantages between expendable and permanent molds? , b) Explain fundamental properties and manufacturing sequence, in (a) sand casting and (b) cold chamber die castingarrow_forward3) What are the means of elastic and plastic deformations? List the passageway (gating system) elements in sand casting moulds and show them with drawing?arrow_forward
- An extrusion operation is used to produce a parison whose mean diameter = 27 mm. The inside and outside diameters of the die that produced the parison are 18 mm and 22 mm, respectively. If the minimum wall thickness of the blow-molded container is to be 0.40 mm, what is the maximum possible diameter of the blow mold?arrow_forwardExplain in detail different components of a gating system in sand mold castingarrow_forward2. A mold sprue is 180 mm long, the cross-sectional area at its base is 2.4 cm?. The sprue feeds a horizontal runner leading into a mold cavity whose volume is 1600 cm3. Determine, volume rate of flow and time to fill the mold.arrow_forward
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