22.30 Negative rake angles generally are preferred for ceramic, diamond, and cubic-boron-nitride tools. Why?

Q: 22.27 Why are chemical stability and inertness important in cutting tools?

A: Cutting tool  material is used to remove material from workpiece by cutting Process. Cutting Tool…

Q: What are the major properties required of cutting-tool materials? Why?

A: Major properties required of cutting-tool materials: Hot hardness: The cutting tool material should…

Q: Calculate resultant force, metal removal rate and shear strain in an orthogonal cutting the depth of…

A:

Q: What is the function of chip breakers? How do they function? Do you need a chip breaker

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Q: In a turning operation on stainless steel, cutting speed = 150 m/min, feed = 0.25 mm/rev, and depth…

A: From the given table write the specific energy for cutting stainless steel.

Q: In a slab milling operation , L_w = 200 mm table feed = 18 mm/min, diameter of cutter = 34 mm depth…

A: Given Data: The length of the slab is, Lw=200 mm. The feed rate of the table is, f=18 mm/min. The…

Q: A cutting tool has a nose radius of 1.8mm find the feed rate for a theoretical surface roughness of…

A: Concept: Surface roughness is measured by center line average. (CLA)  CLA = (fxf) / (8 x R)  Where f…

Q: List the factors that contribute to poor surface finish in cutting.

A: It is required to enlist the factors that contribute to poor surface finish in cutting

Q: Taylor's tool life equation is given by VT" = C, where V is in m/min and T is in min. In a turning…

A: Given:- Equation:-VTn=CFor tool Xn=0.3C=60For tool Yn=0.6C=90To find:-Cutting speed

Q: The face milling cutter of D = 200 mm used to cut a block which is 200 mm = H, 1=480 mm, if f- 0.7…

A: Machine time is the ratio of length divided by cutting speed. Here,  Length = length of block +…

Q: 21.51 Taking carbide as an example and using Eq. (21.24), determine how much the feed should be…

A: Write the given relation for mean temperature. Tmean∝vafb According to the problem, the mean…

Q: Assume that, in orthogonal cutting, the rake angle, α , is 20° and the friction angle, β , is 35° at…

A:

Q: (a) Explain the difference between roughing and finishing operations in machining. (b) What are the…

A: a. Explain the difference between roughing and finishing operations in machining. (b) What are the…

Q: 2 Using trigonometric relationships, derive an expression for the ratio of shear energy to…

A: we know thatformula for shear energy is given byμs=FSVSwtVthe specific energy for friction is given…

Q: 21.21 Explain why studying the types of chips produced is important in understanding cutting…

A: Understanding of Types of chips produced in cutting operations

Q: In a cutting test with 0.3 mm flank wear as tool failure criterion, a tool life of 10 min was…

A: Taylor's tool life equation is given by F.W. Taylor. Taylor's tool life equation gives the relation…

Q: H.W. The face milling cutter of D= 200 mm used to cut a block which is 200 mm = H, 1 =480 mm, if f=…

A:

Q: QUESTION 2 Tool life can be defined as the actual machining time of successive surface sharpening…

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Q: In a turning operation, the tool life varies with cutting speed, as shown in following table:…

A: Turning operation is the manufacturing technique that is done on a lathe machine. In this operation,…

Q: b) Derive an expression for the "peak to valley" height Rt of a turned surface cut on a lathe with a…

A: As per Bartleby's policy in case of multiple questions I can only one. Please repost last one as…

Q: The cutting force increases with the depth of cut and decreasing rake angle. Explain why

A: Depth of Cut:- When the depth of cut increase, then the amount of material removed in a unit time…

Q: What is the approximate % change in the life, t, of the tool with zero rake angle used in orthogonal…

A: Given: Flank wear∝cot α

Q: Q) An engine lathe is used to turn a cylindrical work part 150 mm in diameter by 500 mm long.…

A: GIVEN: D=150mm L=500mm F=0.3mm/rev d=3mm Cutting speed, V=2.5m/s=2500X60=150000mm/min   a) CUTTTING…

Q: If shear strength is 6000 kg/cm2, width of cut is 10mm, cutting speed is 30 m/min, coefficient of…

A: Given:shear strength,ζ=6000 Kg/cm2  =6000*9.8110-4ζ=588.6 MPab=10 mmVelocity of cutting,V=30…

Q: During orthogonal cutting of mild steel with a 10° rake angle tool, the chip thickness ratio was…

A: Given, Orthogonal rake angle, α=10° Chip thickness ratio, r=0.4

Q: The machine preferred for producing 100 pieces

A: Given; Data shown is;   Conventional lathe and CNC lathe are in consideration for…

Q: Explain how a dull tool can lead to negative rake angles.

A: Dull tool :-  With large lots and aggressive machining conditions, it is likely that cutting tools…

Q: (j) In a turning operation on stainless steel with hardness = 200 HB, the cutting speed = 250 m/min,…

A: Given data : stainless steel with hardness = 200 HB cutting speed (v) = 250 m/min feed (f) = 0.3…

Q: 21.62 Using Eq. (21.30), select an appropriate feed for R = 1 mm and a desired roughness of 0.5 μ m.…

A: The roughness Ra is given by:- Ra =f28RWhere,f=feedR=radiusSubstituting Ra =0.5 μm,  R = 1mm in the…

Q: In turning operation, spindle speed is set to provide a cutting speed of 2.2 m/- The feed and depth…

A: We know for orthogonal turning...

Q: List and explain the considerations involved in determining whether a cutting tool should be…

A: We need to consider about the structural, economic, and environmental aspects.

Q: In a multi point cutting tool the positive rake angle is used to cut low tensile strength and…

A: This question is from manufacturing engineering subject.

Q: In a turning operation on cast iron, the nose radius on the tool = 1.5 mm, feed = 0.22 mm/rev, and…

A: Given data: Nose radius of the tool = 1.5 mm Feed = 0.22 mm/rev Speed = 1.8 m/s Need to determine…

Q: 21.20 Is material ductility important for machinability? Explain.

A: Yes ductility is required for better machinability.

Q: Describe the consequences of exceeding the allowable wear and (Table 21.4) for various cutting-tool…

A: the various materials in the table as shown are for various operation  turning  face milling  end…

Q: 22.48 H ow would you go about measuring the effectiveness of cutting fluids? Describe your method…

A: The primary functions of the cutting fluid are: Heat dissipation for the place where machining is…

Q: Why were cutting-tool inserts developed?

A: Let us discuss in detail about cutting tool inserts in metal tools used for metal cutting…

Q: State whether or not the following statements are true, explaining your reasons: (a) For the same…

A: a) For the same shear angle, there are two rake angles that give the same cutting ratio,…

Q: What is the cutting ratio? Is it always less than 1?explain

A: Cutting ratio (r): Cutting ratio is defined as the ratio of thickness of metal before cutting that…

Q: Show that, for the same shear angle, there are two rake angles that give the same cutting ratio

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Q: 5. What are the adverse effects of tool wear in cutting processes?

A: As per the company policy, we are restricted to solve one question at a time. Please ask other…

Q: b) Derive an expression for the "peak to valley" height Rt of a turned surface cut on a lathe with a…

A: Ans a.) In general, we understand that surface quality is an evaluation of the surface imperfection…

Q: An experiment on the life of a cutting tool at different cutting speeds are given bellow

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Q: Q1_Tuming operation carried out on Aluminum shaft with specific energy of 0.7 N.m/mm. Cutting speed…

A: As per our guidelines we are supposed to do only first question, if more than one question asked,…

Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.