A round disk of 200-mm diameter is blanked from a strip of 3.0-mm, half-hard cold-rolled steel whose shear strength = 300 MPa, and clearance allowance = 0.075. Determinea. the appropriate punch and die diameters, andb. blanking forceEquation to useClearance allowance value for three sheet metal groups.Compiled from [3].Metal GroupAc0.0451100S and 5052S aluminum alloys, all tempers.2024ST and 6061ST aluminum alloys; brass, all tempers; soft cold-rolled steel, soft stainless steel. 0.060Cold-rolled steel, half hard; stainless steel, half-hard and full-hard.0.075

Given data: d=200 mmt=3 mmτ=300 MPaAc=0.075 Need to determine the punch, die diameters and blanking…

Answered: A round disk of 200-mm diameter is…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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A compound die will be used to blank and punch a large washer out of 6061ST aluminum alloy sheet stock 3.50 mm thick. The outside diameter of the washer is 50.0 mm and the inside diameter is 15.0 mm. Determine the punch and die sizes for the punching operation. TABLE 20.1 Clearance allowance value for three sheet-metal groups. Metal Group A. 1100S and 5052S aluminum alloys, all tempers 2024ST and 6061ST aluminum alloys; brass, all tempers; soft cold- 0.045 0.060 rolled steel, soft stainless steel Cold-rolled steel, half hard; stainless steel, half-hard and full-hard 0.075 Select one: a. 18.42 mm b. 20.42 mm c. 19.42 mm d. 15.42 mm
Manufacturer process A compound die will be used to blank and punch a large rectangle (90x150mm blank dimensions) out of 6061ST aluminum alloy sheet stock 3.5 mm thick. The diameter of inside hole is 25 mm. The aluminum sheet metal has a tensile strength = 310 MPa. Determine the minimum tonnage press (force) to perform the blanking and punching operation (1) assume that blanking and punching occur simultaneously and (2) assume that punching occurs first, then blanking. Take: Ac=0.06
A compound die will be used to blank and punch a large rectangle (90x150mm blank dimensions) out of 6061ST aluminum alloy sheet stock 3.5 mm thick. The diameter of inside hole is 25 mm. The aluminum sheet metal has a tensile strength 310 MPa. Determine the minimum tonnage press (force) to perform the blanking and punching operation (1) assume that blanking and punching occur simultaneously and (2) assume that punching occurs first, then blanking, Take: Ac-0.06
Find the process tolerance for blanking o 40 piece from 2 mm thick mild steel Sheet. (Take minimum die clearance of 2% per side)
3XPL@!N THE PROCESS @ND PROVIDE EXAMPLES FORMING OPERATIONS 1. Forging is mechanically working or deforming a single piece of a usually hot metal; this may be accomplished by the application of successive blows or by continuous squeezing. 2. Rolling, the most widely used deformation process, consists of passing a piece of metal between two rolls; a reduction in thickness results from compressive stresses exerted by the rolls. 3. Extrusion, a bar of metal is forced through a die orifice by a compressive force that is applied to a ram; the extruded piece that emerges has the desired shape and a reduced cross-sectional area. 4. Drawing is the pulling of a metal piece through a die having a tapered bore by means of a tensile force that is applied on the exit side.
Q3- B/A round disk of 150 mm diameter is to be blanked from a strip of 3.2 mm half hard cold-rolled steel whose shear strength =300mpa. Determine a-the appropriate punch and die diameter and b-blanking force Hints a 0.075
38 - A blanking operation is to be performed on 8.0 mm thick soft cold rolled steel. The part is circular with diameter% D 90.0 mm. Determine the appropriate punch size for this operation (Punch diameter = Db - 2c) %3D Clearance allowance value for Metal Group 1100S and 5052S aluminum alloys, all tempers Ac 0.045 2024ST and 6061 ST aluminum 0.060 alloys; brass, all tempers; soft cold- rolled steel, soft stainless steel Cold-rolled steel, half hard; stainless steel, half-hard and full- hard 0.075 a) 98,20 b) 89.04 88,80 82.70 e) 74,76
Choose the correct answer for the following: than hinh e to 4. In rolling operation, large diameter roll induces.. on the surface of the rolled part. a. compression stress. 5. the preheating treatment is not necessary if the carbon equivalent in the steel part is .. a. 0.3 b. tension stress. c. no residual stress b. 0.6 c. 0.8
5) A steel specimen of rectangular cross section with 120 mm width, 180 mm thickness and 90 mm height was upset at room temperature by open-die forging to a height of 55 mm. If the strength coefficient and strain hardening exponent of this material were 1015 MPa and 0.17 respectively, the coefficient of friction is 0.2, and assuming that the thickness would not change during forging; determine the required upsetting force at the end of stroke.
A compound die will be used to blank and punch a large washer out of 6061ST aluminum alloy sheet stock 3.50 mm thick. The outside diameter of the washer is 50.0 mm and the inside diameter is 15.0 mm. Determine (a) the punch and die sizes for the blanking operation, and (b) the punch and die sizes for the punching operation Vallue for allowance = 0.060
o 1:0Y 1 %VE .J • UU -> • من تعليقات الفئة Q1- What are the main advantages of using the bulk deformation processes? Q2- Explain when the engineering can use hot, cold and warm working during the manufacturing processes? 13- Classify the rolling processes according to the part geometry, and give your opinion about the best method can be used to produce a thick walled tubes? Q4- What are the main features of shape rolling? Q5- What are the main equipment that used in the forging processes? Q6- Explain the main advantages of using the flash in the close die? Q7- What are the types of the forging machine? "lää all موعد التسليم اليوم، . عملك + إضافة عمل
16 30. Forging process is suitable for mass production. Select one: True False

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