Q3: Explain how you would produce a hard surface in the followings, Give reason(s) for your selection. 1-A shaft made from 1% Al-1.5% Cr steel which has to operate at a temperature between 350 and 400°C. 2-A gear wheel made from a 0.5% C steel which requires a hard surface to improve its wear-resistant properties. 3-An automobile axle requires an accurate thickness of the hardened case.

Q3: Explain how you would produce a hard surface in the followings, Give reason(s) for your selection. 1-A shaft made from 1% Al-1.5% Cr steel which has to operate at a temperature between 350 and 400°C. 2-A gear wheel made from a 0.5% C steel which requires a hard surface to improve its wear-resistant properties. 3-An automobile axle requires an accurate thickness of the hardened case.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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STATICS : METHOD OF SECTIONS - GET THE GIVEN, WHAT IS ASKED, AND THE ANSWER. - MAKE A PROPER FREE BODY DIAGRAM. (IT DOES HAVE THE GREATER POINTS IN THIS ACTIVITY) - YOUR SUB ANSWERS MUST BE IN 6 DECIMAL PLACES. - YOUR FINAL ANSWER MUST BE IN 4 DECIMAL PLACES. - TELL THE DIRECTION AND WHETHER IT IS TENSILE OR COMPRESSION. - WRITE YOUR SOLUTION PROPERLY (EASY TO UNDERSTAND). - I PROVIDED A SAMPLE PROBLEM SO THAT YOU WILL KNOW HOW TO SOLVE IT. THANK YOU IN ADVANCE! Solve the forces in PQ, FL, QG, and QM. Hint: Identify all zero-force members and remove them from the structure. In the summation of moments, look for a point where member forces at the supports converge so that their moment arm is zero. From here you will be able to solve PQ. Solve FL using summation of moments from the other half of the section. Solve QG and QM using Method of Joints.
Project 2:Table 3 shows the fatigue data for a ductile cast iron to be used for an automobile axle that rotatesat an average rotational speed of 750 revolutions per minute:a) Make an S-N plot (stress amplitude versus logarithm cycles to failure).b) What is the fatigue limit for this alloy?c) Determine the fatigue lifetimes at stress amplitudes of 500 MPa and 400 MPa?d) Estimate the maximum lifetime of continuous driving that are allowable for the following 250MPa and 150 MPa stress levels.
Q2: Select any one casted component shown in the figure which is made up of alloy material and used in mechanical application. In your own words, explain the manufacturing process required to make the selected component with propper material selection.
Please match Heat-Treated Steels with their hardness HB numbers, according to the charts shown below. a) SAE 1040 WQT at different Temperatures b) SAE 4140 OQT at different Temperatures c) SAE 4340 OQT at different Temperatures SAE 1040 WQT 1000 SAE 4140 OQT 1000 SAE 4140 OQT 1100 SAE 4340 OQT 800 a. HB = 415 b. HB = 341 c. HB = 311 d. HB = 269
Q1- Compare between the ferrous and non-ferrous metals in terms of the strength, hardness, weight, machinability and the cost? Q2- What are the different between the cast iron and the steel? Q3- explain the following points: 1-When the carbide increase, the strength of the material increase too. 2-Plain carbon steels are cheaper than the alloy steels. 3-The manufacturers prefer the Al more than Cu to produce the rips and doors. 4-Mg are almost used as an alloy
Answer with true (T) or false (F), corrects the wrong phrases, and gives short reason(s) for correct and corrected statements: 1- Normalized steels have better strength and toughness as compared to annealed steels. 2- Ferrous alloys are most important and widely used in comparison to any other metals. 3- Metals of BCC crystal structure are denser than metals of FCC structure. 4- Hypo-eutectoid steels fully annealed by heating to about 30°C above the upper critical temperature. X A3 5- The full martensite microstructure can be obtained by cooling the steels with any cooling rate. 6- There is a large volume expansion when martensite forms from austenite.,
Answer with true (T) or false (F), corrects the wrong phrases, and gives short reason(s) for correct and corrected statements: 1- Normalized steels have better strength and toughness as compared to annealed steels. 2- Ferrous alloys are most important and widely used in comparison to any other metals. 3- Metals of BCC crystal structure are denser than metals of FCC structure. 4- Hypo-eutectoid steels fully annealed by heating to about 30°C above the upper critical temperature. 5- The full martensite microstructure can be obtained by cooling the steels with any cooling rate. 6- There is a large volume expansion when martensite forms from austenite.
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PROVIDE A CLEAR SOLUTION AND THE RIGHT ANSWER FOR THIS PROBLEM. PROVIDE INDIVIDUAL FBD
Q3: Explain how you would produce a hard surface in the followings, Give reason(s) for your selection. 1-A shaft made from 1% Al-1.5%Cr steel which has to operate at a temperature between 350 and 400°C. 2-A gear wheel made from a 0.5% C steel which requires a hard surface to improve its wear-resistant properties. 3-An automobile axle requires an accurate thickness of the hardened case. 4-Large quantities of low carbon steel parts. 5-Very high wear resistance surface.
Follow up: How would the steps of this problem change if θ was not 90°?
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