6) In rolling a strip between two rolls, the position of the neutral point in the arc of contact does not depend on
Q: 1. The appropriate punch size for a blanking operation using to perform a cold-rolled steel (half…
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: 5) The first operation in closed die forging is Fullering Blocking Trimming Coining
A: Closed die forging is a plastic deformation process in which heated metal is forced to flow in a…
Q: coefficient of friction between the roll and the plate i
A: Given; In a rolling operation using rolls of;Diameter,D=400 mmThickness, t=35mmFor the given…
Q: C. Shear center is the point in or outside a section through which the shear force applied produces
A: This question is based on the concept of shear center.
Q: Derive an expression for the reduction r in drawing as a function of drawing ratio DR.
A: 1. Reduction, r = D-d / D
Q: Question 8 8.1 Calculate the power required to roll an 8650 steel strip, 140 mm wide and 20 mm thick…
A:
Q: Which of the following method(s) reduce t roll separating force in a rolling process? i. Reducing…
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Q: Products produced by precision forging require Select one: O a. no additional finishing operations…
A: Introduction: Precision forging is defined as a flashless near net shape forging operation which…
Q: Two parallel shafts, 20 in. apart and rotating at 450 rpm and 112.5 rpm, are connected by cylinders…
A:
Q: How is shear obtained?
A: Shear stress developed in material obtains from the applied force on the material and the…
Q: Show your illustration and complete solution in a drawing plate. Two parallel shafts, 11 inches…
A:
Q: In a wire drawing operation, diameter of a steel wire is reduced from 10 mm to 8 mm. The mean flow…
A: Given:Initial diameter, Di=10 mmFinal diameter, Df=8 mmflow stress of the material, σo=400 MPa
Q: To draw an aluminum wire with an initial diameter of 8 mm in three passes, up to a diameter of 4 mm.…
A:
Q: The method of sheet forming in which springback is prevented is called .......... n) With the help…
A: Given :- m) The method of sheet forming in which springback is prevented is called ..........n)…
Q: What is the difference between a single shear and double shear?
A: Single shear : the cross sections area is included once for the calculation of shear stress. Double…
Q: 4- A round sheet metal slug produced in a hole punching operation will have the same diameter as…
A:
Q: Compare any ten major differences between Drawing process and Extrusion process
A: Following is the differences between Drawing process and Extrusion process- Extrusion Drawing…
Q: In flat rolling operations, rolling force can be reduced by.... a) Applying breaking actions to the…
A: In flat rolling operations, rolling force can be reduced by.... a) Applying breaking actions to the…
Q: A strip with cross section 120 X 6 mm is being rolled with 20 % reduction area, using rolls of…
A: Consider a strip of thickness h0 is undergone rolling operation whose Roll Diameter is D and angle…
Q: Which of the following is not one of the advantages of impression-die forging? A: High strength B:
A: Given Data : Impression-die forging
Q: 6.Where is instant center of a higher pair of rolling and sliding ? A lies at infinity on the normal…
A: As per given question .Where is instant center of a higher pair of rolling and sliding
Q: Calculate the bite angle when rolling plates 12 mm thick using work rolls 600 mm diameter and…
A: Given:∆h, Thickness reducing=3 mmR, radius of roller=300 mm
Q: Which of the following operations are closely related to open-die forging: Select one: O a. Coining…
A: The ingot is the main raw material and it is heated and converted into the slab and has a…
Q: 7. Please analyze and compare the characteristics of sliding guide and rolling guide.
A: A linear guide (also known as a linear bearing) is a mechanical component that allows relative…
Q: 2) A 2 mm thick metal sheet is to be bent at an angle of one radian with a bend radius of 100 mm. If…
A: As per given question R = Bend inside Radius=100mmK = 0.5 because R > 2tt = sheet thickness=2 We…
Q: For the figure below, the average shearing stress in each rivet is ..kPa
A:
Q: Calculate the bite angle when rolling plates 12mm thick using work rolls 600mm diameter and reducing…
A: Given data: hi=12 mm∆h=3 mmD=600 mm Need to determine the bite angle.
Q: For bar drawing, semi-die angle.may vary between a. 0 and 5 degree b. 20 and 25 degree 6 and 20…
A: Bar drawing is the process in which workpiece in the form of cylindrical bar or rod is pulled…
Q: Name, draw a neat sketch and explain why each of the following designs of rolling mill are used…
A: To draw a neat sketch of: (i) A mill consist of four rollers (ii) A mill consist of six or more…
Q: 5- Complete the sentence with the correct statement for rolling operation. In the the strip is…
A: To fill :- In the ................. the strip is rolled continuously, through a number of stands.…
Q: 7) Which of the following statement is/are 1 correct for extrusion process? i. In extrusion, block…
A: Extrusion is a process in which billet or bloom is forced through a opening which may be of any…
Q: 1- The use of lubricant in wire drawing die.
A: we have to discuss the use of lubricant in wire drawing
Q: Explain reversing and non-reversing two high rolling mills.
A:
Q: In a slab rolling operation, the maximum thickness reduction (del hmax) is given by del hmax = μ²R,…
A: Given:∆hmax=μ2 RR= radius of the roll,μ= coefficient of frictionμ=0.1
Q: In drawing process, compressive forces are used to reduce the cross section of the workpiece.
A: In the above statement, it is mentioned that compressive force is applied in drawing process to…
Q: Neutral point (no-slip point) of the rolling is a point along the arc in which the workpiece and…
A: In rolling operation. The velocity of workpiece and velocity of roller are same at a point. I.e…
Q: forming proceɛɛ. 18) rolling mill type are associated with relatively small diameter rolls in…
A: Disclaimer from Bartleby: Since you have asked multiple question, we will solve the first three…
Q: 7) Sometimes Drawing crimps are used in deep drawing process for producing complex shapes. Why? B)…
A: Crimps are used to join two or more pieces of metal by deforming one or both of them to hold each…
Q: Two parallel shafts, 11 inch apart and rotating at 75 rpm and 200 rpm are connected by cylinders in…
A:
Q: What force is required to punch a ½ inch hole on a 3/8 thick plate if the ultimate shearing strength…
A:
Q: n a wire drawing operation diameter of a steel wire is reduced from 10 mm to 8 mm. The mean flow…
A: Given:Di=10 mmDf=8 mmσo=400 MPaμ=0,β=0
Q: The shear strength of a sheet metal is 300 MPa. The blanking force required to produce a blank of…
A: Given data: The shear strength of the sheet metal is τ = 300 MPa. The diameter of the blank is d =…
Q: 2. Calculate the blank size for the following sheet metal bending operation when the thickness of…
A: given data; A=60mmB=250mmC=80mmthickness of sheet (t)=4mmradius of corner (R)=1.5t lets take blank…
Q: 7) In deep drawing of sheets, the values of limiting drawing ratio depends on percentage elongation…
A: As per given question deep drawing of sheets, limiting drawing ratio depends on
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- An open belt 100 mm wide connects two pulleys mounted on parallel shafts with their centres 2.4 m apart. The diameter of the larger pulley is 450 mm and that of the smaller pulley 300 mm. The coefficient of friction between the belt and the pulley is 0.3 and the maximum stress in the belt is limited to 14 N/mm width. If the larger pulley rotates at 120 r.p.m., find the maximum power that can be transmitted. [Ans. 2.39 kW]A 150lb man stands on a 60lb bar to which a cable is fixed at B. The cable passes over two fixed pegs with coefficients of friction indicated. Assume that the arrangement of the pegs permits the cable to contact each peg over a total angle of 90-degrees (90-degrees per peg). Assume that the normal force exerted by the man on the bar acts downward through A. Find the largest force the man can exert on the cable and maintain the bar horizontal.Provide a very clear and complete solution as well as diagram. A pulley 600 mm in diameter transmits 40 KW at 500 rpm. The arc of contact between the belt and pulley is 144 degrees, the coefficient of friction between belt and pulley is 0.15 and the safe working stress of the beltis 2.1 Mpa. Determine the belt tension ratio, neglecting the effect of centrifugal force. A. 2.41 B. 2.44 C. 1.458 D. 4.1
- An open belt 100 mm wide connects two pulleys mounted on parallel shafts with their centres 2.4 mapart. The diameter of the larger pulley is 450 mm and that of the smaller pulley 300 mm. The coefficient of friction between the belt and the pulley is 0.3 and the maximum stress in the belt is limited to14 N/mm width. If the larger pulley rotates at 120 r.p.m., find the maximum power that can be transmitteda) A single cylinder reciprocating engine has a stroke 40cm and the crank makes 250 r.p.m. The reciprocating parts mass is 60kg and the mass of the revolving parts at 20cm radius is 40kg. If two-thirds of the reciprocating mass and all the revolving mass is to be balanced, what is the balancing mass at a radius of 40cm and what is the residual unbalance force when the crank is at 60º from the top dead centre. b) A shaft is supported at bearing at A and B, 2m apart. A rotor of total mass 30kg is mounted at a point 0.6m from bearing A. Owing to faulty mounting the centre of gravity of the rotor is offset 3mm around the axis of rotation. Calculate the dynamic loads on the bearings when the shaft rotates at 600rev/min. calculate also the maximum and minimum loads on the bearings.Q) The shaft of a collar thrust bearing rotates at 200 r.p.m and carries an end thrust of 10 tonnes. The outer and inner diameters of the bearing are 480 mm and 280 mm respectively. If the power lost in friction is not to exceed 8 kW, determine the coefficient of friction of the lubricant of the bearing.
- B) A body is pulled by a rope which passes 3 times round a power-driven capstan, of 600 mm diameter, develop 6 kW at 20 r.p.m. Find: 1. The value of the pull on the body. 2. The force required at the free end of the rope to prevent slip. Given that the friction of coefficient is 0.3.7. A pulley 610 mm in diameter transmits 37 KW at 600 rpm. The arc of contact between the belt and pulley is 144 degrees, the coefficient of friction between the belt and pulley is 0.35, and the safe working stress of the belt is 2.1 Mpa. Find: A. The tangential force at the rim of the pulley. Ans. 1.93 KN B. The effective belt pull. C. The width of the belt used if its thickness is 6 mm. 200 a wide Ans. 1.93 KN Ans. 261 mmA selfpropelled truck of total mass 25 tonnes and wheel diameter 750 mm runs on a track forwhich the resistance is 180 N per tonne. The engine develops 60 kW at its maximum speed of 2400r.p.m. and drives the axle through a gear box. Determine : 1. the time to reach full speed from reston the level if the gear reduction ratio is 10 to 1 Assume the engine torque to be constant and agearing efficiency of 94 per cent, and 2. the gear ratio required to give an acceleration of 0.15 m/s2on an up gradient of 1 in 70 assuming a gearing efficiency of 90 per cent.
- If PCD=6000lb and PGD=1000lb (both compression), find P and Q.A uniform push of 150N, applied at an angle of 30 degrees to a 20kg block which rests on a horizontal surface, gives the block a velocity of 6.5m/s in 4s. Find the coefficient of kinetic frictionthe load on each tire of the car is 1000kg and the tires diamater is 50cm . if the coefficient of rolling friction is 1cm, what is the rolling frcition to keep the moving