Need some help here and the values in the paper under 1/2inchand under 2inch are the hardness
Fantastic news! We've Found the answer you've been seeking!
Question:
Need some help here and the values in the paper under 1/2inchand under 2inch are the hardness values that were measured.
Transcribed Image Text:
Method of Test • The standard method for Jominy test is ASTM-A255. • The specimen consists of a cylindrical bar with a 1-in diameter and 4-in length and with a 1/16 in flange at one end. • The test piece is held 10 minutes in the fixture under the action of cooling before quenching in cold water. ● ● • Hardness (Rockwell C scale) measurements are taken for the first 2 ½ in. along each flat; for the first ½ in., hardness readings are taken at 1/16 in. intervals, for the remaining 2 in., hardness readings are taken every 1/8 in. ● After cooling, shallow flats 0.015 in. deep are ground along the specimen length. ● Figure shows the correlation between the hardness and the distance from the quenched end is due to the variation in the cooling rates that result to different microstructures at different distances from the quenched end. Using the observed hardness values at different distances from the quenched end, plot hardenability curves. ● Hardenability curves for all samples tested in the same graph. Comment on the variability of the data as evidenced by deviations from the smooth curve. Draw a smooth curve for each specimen, neglecting observed values that deviate too much from the curve. Explain the differences and similarities between the obtained hardenability curves, and the effect of the presence of the alloying elements and the carbon content of the sample. Taken every to mch Epirement 8 other 2mches of sample first & Yach -26 33,1 43.5 68.4 52.4 70% 58.3 58.1 70,6 S4. 59.2 57.8 55.3 $2.3 419.3 50.1 53.8 49.2 [1.8 51.5 54,9 49.1 53.9 45.9 54,3 taken every & inch Method of Test • The standard method for Jominy test is ASTM-A255. • The specimen consists of a cylindrical bar with a 1-in diameter and 4-in length and with a 1/16 in flange at one end. • The test piece is held 10 minutes in the fixture under the action of cooling before quenching in cold water. ● ● • Hardness (Rockwell C scale) measurements are taken for the first 2 ½ in. along each flat; for the first ½ in., hardness readings are taken at 1/16 in. intervals, for the remaining 2 in., hardness readings are taken every 1/8 in. ● After cooling, shallow flats 0.015 in. deep are ground along the specimen length. ● Figure shows the correlation between the hardness and the distance from the quenched end is due to the variation in the cooling rates that result to different microstructures at different distances from the quenched end. Using the observed hardness values at different distances from the quenched end, plot hardenability curves. ● Hardenability curves for all samples tested in the same graph. Comment on the variability of the data as evidenced by deviations from the smooth curve. Draw a smooth curve for each specimen, neglecting observed values that deviate too much from the curve. Explain the differences and similarities between the obtained hardenability curves, and the effect of the presence of the alloying elements and the carbon content of the sample. Taken every to mch Epirement 8 other 2mches of sample first & Yach -26 33,1 43.5 68.4 52.4 70% 58.3 58.1 70,6 S4. 59.2 57.8 55.3 $2.3 419.3 50.1 53.8 49.2 [1.8 51.5 54,9 49.1 53.9 45.9 54,3 taken every & inch
Expert Answer:
Answer rating: 100% (QA)
To plot hardenability curves based on the observed hardness values at different distances from the q... View the full answer
Related Book For
An Introduction to Statistical Methods and Data Analysis
ISBN: 978-1305269477
7th edition
Authors: R. Lyman Ott, Micheal T. Longnecker
Posted Date:
Students also viewed these mechanical engineering questions
-
Here are some accounting numbers and market values (in millions) for Hewlett-Packard and Gateway for 2002. These two computer manufactures are considered to be comparables for Dell, Inc. a. Calculate...
-
Here are some numbers that you can use to sharpen your computational skills for sample size determination. Crest Toothpaste is reviewing plans for its annual survey of toothpaste purchasers. With...
-
Here are some details of an investment in a project with a two-year life and a required return of 9 percent per year. Dollar amounts are in millions. Initial investment in equipment...........$1,500...
-
4. (8 points) Fill in with =, >, >=,
-
New lithographic equipment, acquired at a cost of $175,000 at the beginning of a fiscal year, has an estimated useful life of five years and an estimated residual value of $15,000. The manager...
-
Describe a perpetual inventory system. Identify a type of company that might use it.
-
The accountant of a private company has been able to get the use of a computer to produce the spreadsheets shown below but as yet the computer lacks a program to print out final accounts. The...
-
Pearl Products Limited of Shenzhen, China, manufactures and distributes toys throughout South East Asia. Three cubic centimeters (cc) of solvent H300 are required to manufacture each unit of...
-
1. Do a current event article search to find an example of an equity method of intercorporate investment by a company. 2. Write a summary explaining equity method of intercorporate investment and ...
-
Nucor Corporation produces steel and steel products at its eight mills and is a major recycler of scrap metal. The following data relate to Nucor for four years. In 2017, Nucors net income was higher...
-
Bramble Corp. has decided to expand its operations. The bookkeeper recently completed the following statement of financial position in order to obtain additional funds for expansion: Bramble Corp....
-
There are a number of errors in the following program. "what is wrong with this program? /* #include using name space std; int main(): { } \\Three integers int a, b, c a=3; b=4; c=a+b Cout
-
Madsen Motors's bonds have 8 years remaining to maturity. Interest is paid annually; they have a $1,000 par value; the coupon interest rate is 6.5%; and the yield to maturity is 9%. What is the...
-
2. Convert the following C instructions to LEGV8 assembly language assume that the variables are already loaded into registers. Specify the registers you will use. [3] a = (h+90) / 1024
-
What is the best O-notation for the following code fragment: for (i=0; i
-
What decimal value is in $s3 after executing this MIPS code? addi $s1, $zero, 2 addi $82, $zero, 3 TOP: addi $32, $32,-1 add $33, $s1, $s2 beq $32, $zero, OUT j TOP OUT: sub $83, $s3, $s1
-
Exercise 5-9 (Algo) Noninterest-bearing note; single payment (LO 5-5) Lights, Camera, and More sells filmmaking equipment. The company offers three purchase options: (1) pay full cash today, (2) pay...
-
Walker, Inc., is an all-equity firm. The cost of the company's equity is currently 11.4 percent and the risk-free.rate is 3.3 percent. The company is currently considering a project that will cost...
-
A producer of various feed additives for cattle conducts a study of the number of days of feedlot time required to bring beef cattle to market weight. Eighteen steers of essentially identical age and...
-
Refer to Exercise 18.36. In Exercise 18.36 Sodium nitrate, a preservative that is used in some processed meats, such as bacon, jerky, and luncheon meats, could increase your heart disease risk. A...
-
A municipal workers union that represents sanitation workers in many small Midwestern cities studied the contracts that were signed in the previous years. The contracts were subdivided into those...
-
Use the information from question 3. What is the net exchange gain or loss for 2017? Use the following forward and spot prices for Canadian dollars (C\($)\) to answer this question. The prices are in...
-
On November 15, 2016, a U.S. company issues a purchase order to a Canadian supplier for merchandise costing C\($1,000,000\). On the same date, the company enters a forward contract locking in the...
-
Use the information from question 7. When the merchandise is sold, at what amount will the company report cost of goods sold? Use the following forward and spot prices for Canadian dollars (C\($)\)...
Study smarter with the SolutionInn App