EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Chapter 18, Problem 3RQ
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Describe the doctor-blade process.
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In a sheet metal forming press, the shape to be formed is hemispherical cup of radius 15 cm in 2mm thick mild
steel sheet. The force required to deform sheet is 8 kN. The forming hammer should approach job from a distance
of 30 cm. The production rate required is 240 components/hr.
Calculate and suggest the following specifications of the various hydraulic components used:
a. Hydraulic cylinder (bore & length);
b. Pump pressure and flow rate;
c. Electric motor HP considering 75% pump efficiency;
d. Reservoir size; and
e. Size of pump inlet and discharge tubing.
Extrusion is a fundamental shaping process. Describe it
Chapter 18 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 18 - Outline the steps involved in processing (a)...Ch. 18 - List and describe the functions of additives in...Ch. 18 - Prob. 3RQCh. 18 - Prob. 4RQCh. 18 - Prob. 5RQCh. 18 - Prob. 6RQCh. 18 - Prob. 7RQCh. 18 - Describe the methods by which sheet glass is made.Ch. 18 - Prob. 9RQCh. 18 - Prob. 10RQ
Ch. 18 - Prob. 11RQCh. 18 - Prob. 12RQCh. 18 - Prob. 13RQCh. 18 - Prob. 14RQCh. 18 - Prob. 15RQCh. 18 - Prob. 16RQCh. 18 - Prob. 17RQCh. 18 - Prob. 18QLPCh. 18 - Describe the differences and similarities in...Ch. 18 - Describe the differences and similarities in...Ch. 18 - Prob. 21QLPCh. 18 - Prob. 22QLPCh. 18 - Prob. 23QLPCh. 18 - Are any of the processes used for making discrete...Ch. 18 - Prob. 25QLPCh. 18 - Explain the phenomenon of static fatigue and how...Ch. 18 - Describe and explain the differences in the manner...Ch. 18 - Is there any flash that develops in slip casting?...Ch. 18 - Prob. 29QLPCh. 18 - Using Example 18.1, calculate (a) the porosity of...Ch. 18 - Prob. 31QTPCh. 18 - List similarities and differences between the...Ch. 18 - Prob. 34SDPCh. 18 - Prob. 35SDPCh. 18 - Prob. 36SDPCh. 18 - Prob. 37SDPCh. 18 - Prob. 38SDPCh. 18 - Prob. 39SDPCh. 18 - Prob. 40SDPCh. 18 - Describe your thoughts on the processes that can...Ch. 18 - Prob. 43SDP
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- • In a sheet metal forming press the shape to be formed is hemispherical cup of radius 15 cm in 2mm thick mild steel sheet. The force required to deform sheet is 8 kN. The forming hammer should approach job from a distance of 30 cm. The production rate required is 240 components/hr. Calculate and suggest the following specifications of the various hydraulic components used: a) Hydraulic cylinder (bore & length) b) Pump pressure and flow rate c) Electric motor HP considering 75% pump efficiency d) Reservoir size e) Size of pump inlet and discharge tubingarrow_forwardDifferentiate Between Gear Hobbing And Gear Shaping With Reference To Various Relative Motions And Applications?arrow_forwardA furniture company that makes upholstered chairs and sofas must cut large quantities of fabrics. Many of these fabrics are strong and wear-resistant, which properties make them difficult to cut. What nontraditional process(es) would you recommend to the company for this application? Justify your answer by indicating the characteristics of the process that make it attractive.arrow_forward
- A 10 mm thick plate is rolled to 7 mm thick in a rolling mill using 1000 mm diameter rigid rolls. The neutral point is located at an angle of 0.3 times the bite angle from the exit. What will be the thickness of the plate at the neutral point.arrow_forwardQUESTION 2 A material is required for a new product with fixed geometry that will be shaped by moulding. The product should be cheap to make, easily recycled and needs reasonable strength. What type of material would you choose for the product and why? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).arrow_forwardRanking metal shaping processes by kg carbon footprint (per kg of stuff produced) which of the following is the correct ranking (least carbon footprint to most)? Extrusion, Forging, Wire drawing, Casting, Vapour Deposition Methods, Powder Forming Forging, Casting, Extrusion, Powder Forming, Wire drawing, Vapour Deposition Methods Casting, Forging, Extrusion, Wire drawing, Powder Forming, Vapour Deposition Methods Casting, Extrusion, Forging, Wire Drawing, Powder Forming, Vapour Deposition Methodsarrow_forward
- Name some products that can be manufactured by shape rolling and thread rollingarrow_forward5) Thread rolling is considered the best commercial mass production process that give higher strength threads and better fatigue resistance more than conventional machining processes of threads. 6) In explosive forming, the tank that is filled with water should be open from the top, and not closed by a sealing roof. Why?arrow_forwardIdentify and describe the following steps/products/machines in line with respectivemanufacturing processes .arrow_forward
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