In a ball mill of diameter 2000 mm, 100 mm dia steel balls are being used for grinding. Presently, for the material being ground, the mill is run at 15 rpm. At what speed will the mill have to be run if the 100 mm balls are replaced by 50 mm balls, all the other conditions remaining the same

Q: 2. An automatic bending machine requires a very large torque and slow rpm. Suppose you are to design…

A: It is asked to reduce the RPM from 1400 RPM to 18 RPM by using spur gear combinations

Q: Explain the difference between gear hobbing and gear shaping with reference to various relative…

A: Soln:- Gear  shapping :- 1.the gear shapping tooth is cut one by one till the completion of process.…

Q: Explain the difference between Open Structured and Dense Structured Grinding Wheels

A: Structure of a grinding wheel can be categorized as dense and open on the basis of the grain amount…

Q: ake a list about the process of Mechanical Grinding and another of Reactive Grinding, please be…

A: Grinding is an abrasive machining method that employs the use of a grinding wheel as the cutting…

Q: C3 (a) Grinding wheel manufacturer has written the following information"W A 46 B 5 E 17" on the…

A: (A) Grinding wheel information: W A 46 B 5 E 17 W: it shows the manufacturer symbol A: aluminum…

Q: The marking shown below appear on the side of a conventional grinding wheel. 30 – A - 100 – B - 3 -…

A: The given marking represents the nomenclature of grinding wheels While 30 and XZ represent…

Q: 5.a) Derive a quantitative relationship for abrasive wear b) Explain the merits and demerits of…

A: Given Friction To find Quantitative relationship for abrasive wear  Advantage and disadvantage of…

Q: lathe machine, the maximum torque transmitted by a shaft exceeds the mean torque by 11 %. A power of…

A: For solution refer below images.

Q: 3) Explain how we can avoid critical frequencies in the manufacturing of rotating machinery.

A: given; explain how we can avoid critical frequencies in the manufacturing of rotating machinery.

Q: An aluminium alloy component, is machined on a lathe. The lathe has a mechanical efficiency of 91%.…

A: ⇒given data;⇒mechanical efficiency(η)=91%⇒diameter(d)=150mm⇒lenth(l)=400mm⇒shear stength of aluminum…

Q: The redesigned brake caliper is manufactured using SLM from Titanium Ti6Al-4V alloy powder. How many…

A:

Q: A. Instructions: 1. Draw a sound conclusion based on how you familiarized the key components of the…

A:

Q: Face milling, using an Ø 75 mm cutter with 10 inserts rotating at 280 rpm, is being carried out on a…

A: given; diameter of cutter (D)=75mmnumber of inserts (n)=10rotating speed (N)=280rpmlength of…

Q: suitable answer for the following questions depending on your conclusion:(Five only) Why are LBM and…

A: Disclaimer: Since you have posted a question with multiple subparts we will solve the first three…

Q: In a lathe machine, the maximum torque transmitted by a shaft exceeds the mean torque by 19 %. A…

A:

Q: machine that produces ball bearings has initially been set so that the true average diameter of the…

A: Average diameter of the bearings it produces is .500 inches.    A bearing is acceptable if its…

Q: 1. Creep feed grinding is an operation used for large material as compared to the conventional…

A: Please find the solution below

Q: The specification of grinding when is given

A: Since you have posted a question with multiple subpart we will solve first three part for you. To…

Q: For a grinding process where, Wheel diameter=150 mm, and infeed=0.06 mm in a surface grinding…

A: Given data  Wheel diameter (D) = 150 mm Wheel Speed(V) = 1600 m/min Work speed (v) = 0.3 m/s cross…

Q: You are designing a bench grinder with an operating speed of 3600 rpm. a) If you want the grinder to…

A: Given: The operating speed of grinder = 3600 rpm The max time to reach full operating speed = 4 sec…

Q: Raw material with an input speed of 3.1 MIS will be rolled to the rolling mill with a plate-shaped…

A: Metal forming is a manufacturing process in which the raw material is deformed plastically to get…

Q: A propeller running at a revolution rate of 120 rpm is found to produce no thrust when its velocity…

A:

Q: 3. A steel ring outside diameter 600 mm and an internal diameter of 200 mm is being faced on CNC…

A:

Q: 1. Using a horizontal axis surface grinder, a flat surface of high strength steel sizing 150 mm×300…

A:

Q: Through holes of 10 mm diameter are to be drilled in a steel plate of 20 mm thickness. Drill spindle…

A: Given:Diameter of holes, d=10 mmThickness of steel plate, t=20 mmspeed, N=300 rpmf=0.2 mm/rev

Q: How are work pieces made of carbon steel be clamped/secured to a reciprocating table on a surface…

A: Workpieces made of carbon steel are fastened to table and it can be moved under the grinding wheel…

Q: You have been tasked with designing a set of gears made from a material with a Brinell hardness (Hg)…

A: For the given question, Brinell Hardness number,HB=201MPaTensile strength…

Q: Explain any five characteristics of a grinding wheel

A: Solution:

Q: Why should the sample be rotated 90 ° after each milling step? Explained in detail

A: During a manufacturing process,  The work piece is rotated in order to ensure the removal of rough…

Q: A 150 mm long with 12.5 mm in diameter of a stainless steel rod is being reduced in diameter to 12.0…

A: cutting speed = 0.261799 m/sec material removal rate = 32.7249 cmm/rev cutting time = 0.75 min

Q: How will you secure the safety precautions and reminder before maneuvering a grinding machine?

A: There are following safety precautions before grinding machine... Always wear safety glasses, face…

Q: A shaft of 0.5 m in length and 100cm in diameter is to be machined. What operation will you utilize…

A: Given Data⇒ Length of shaft (L1) =0.5 m Diameter (D1)=100 cm Final Dimensions  Length of…

Q: what process is this?  how to perform this? Procedure in position?

A: Process The figure shown in the question represents one of the operations done using a Shaper…

Q: Describe in 2 or 3 short sentences the effect of grinding type and shot peening, on endurance…

A: Here the description of Grinding type and Shot Peening on the endurance strength.

Q: 11) An internal bore is ground to 100 mm, removing 0.3 mm stock. To accomplish this, a grinding…

A: a) Guidelines and checklists points for Dressing Depth for Grinding Operations: When a large…

Q: Briefly explain the working of a centerless grinding operation with a neat sketch?

A:

Q: In grinding certain tools the linear velocity of the grinding surface should not exceed 6000fts/s.…

A: (a) Write the formula for the angular velocity of the wheel. ω=vr               ... (1) Here, r is…

Q: 4 i. Explain why the same grinding wheel may act soft or hard. ii. Why are grinding operations…

A: 1) - Grinding - grinding is material removal process , in  which a spherical or cylindrical tool ,…

Q: 1) The specification of a grinding wheel is given as follows: 32A 40 L10 B Give the complete…

A: Since You have asked multiple questions in a single request, we would be answering only the first…

Q: I want the theory part about Batch grinding in ball mill,  its types, its Applications, advantages…

A: A ball mill is a type of milling machine consisting of a hollow cylinder having balls, placed on a…

Q: 5. Types of Grinding Wheel Machines and their outputs. (atleast 3)

A: Types of grinding machine: Floor or bench grinder: This is a small type of machine used in the…

Q: “Small grains are used for grinding hard work materials and large grains are used for grinding soft…

A: Smaller grains have greater ratios of surface area to volume, which means a greater ratio of grain…

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.