Bundle: Welding: Principles and Applications, 8th + MindTap Welding, 4 terms (24 months) Printed Access Card
8th Edition
ISBN: 9781337219426
Author: Larry Jeffus
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 6, Problem 13R
What is the purpose of preheating metal before it is welded?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
An industrial burner uses natural gas as fuel. The natural gas consists primarily of CH4
with small quantities of several other light hydrocarbons and can be represented as
C1.16H4.32 To achieve low emissions of oxides of nitrogen, the burner operates lean at
equivalence ratio of 0.4. Assume complete combustion and answer the following
questions.
i) What is the operating air-fuel ratio (i.e. mass air/mass of fuel)? [6 marks]
ii) What is the percent excess air in the combustion products? [3 marks]
iii) What is the oxygen (O2) mole fraction in the combustion products?
[6 marks]
1) Consider the robot, with six degrees of freedom, RRPRR, shown in the following figure.Place the axes through the denavit-hartenberg algorithm and obtain the respective parameter table for the first three joints. 2) Considering the robot from question 1, calculate.the. Determine the Homogeneous Transformation Matrix in relation to the Direct Kinematics of the robot, for the first three joints:b. Considering the first three joints of the robot and L1 and L2 equal to 200 mm:I. calculate the pose of the robot relative to the base, knowing the joint variableshave the following values: q1= 90°, q2= 0°, q3= 50mm:
Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful!
Please do not copy other's work,i will be very very grateful!!
Chapter 6 Solutions
Bundle: Welding: Principles and Applications, 8th + MindTap Welding, 4 terms (24 months) Printed Access Card
Ch. 6 - What is the first weld bead of a multiple pass...Ch. 6 - What is the purpose of using ceramic backup tapes...Ch. 6 - How can discontinuities in the root face be...Ch. 6 - Describe the motion of the electrode in keyhole...Ch. 6 - What is the purpose of placing an assembled test...Ch. 6 - If the key hole becomes smaller and smaller, what...Ch. 6 - What is the purpose of a hot pass?Ch. 6 - What are the best ways to remove slag between...Ch. 6 - What is the last weld bead on a multipass weld...Ch. 6 - What is the purpose of grooving a joint before...
Ch. 6 - After a weld is back gouged and a groove is...Ch. 6 - When stopping an SMA welding bead on a pipe, what...Ch. 6 - What is the purpose of preheating metal before it...Ch. 6 - What is the purpose of postheating the metal after...Ch. 6 - What is interpass temperature?Ch. 6 - The AWS Visual Inspection Criteria allows one...Ch. 6 - What is the difference between a transverse face...Ch. 6 - What changes can be made to successfully make a...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Figure 3 shows the numerical solution of the advection equation for a scalar u along x at three consecutive timesteps. 1.0- 0.8- 0.6- 0.4- 0.2 0.0- -0.2- -0.4- -0.6 T T T 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 Figure 3: Advection equation, solution for three different timesteps. a) Provide an explanation what conditions and numerical setup could explain the curves. Identify which of the three curves is the first, second and third timestep.arrow_forwardplease solve the following problemarrow_forwardA 5 cm external diameter, 10 m long hot water pipe at 80 degrees C is losing heat to the surrounding air at 5 degrees C by natural convestion with a heat transfer coefficient of 25 W/m^2 K. Determine the rate of heat loss from the pipe by natural convection.arrow_forward
- The outer surface of a spacecraft in space has emissivity of 0.8 and a solar absorptivity of 0.3. If solar radiation in incident on the spacecraft at a rate of 950 W/m^2, determine the surface temp of the spacecraft when the radiation emitted equals the solar energy absorbed.arrow_forwardOf the following pairs of material types, indicate whether any of them satisfy the condition that both elements of the pair are generically related to the property of ductility.(A). Yes, ceramics and polymers.(B). No, none of the pairs.(C). Yes, metals and ceramics.(D). Yes, polymers and metals.arrow_forwardBoth Fouriers law of heat conduction and ficks law of mass diffusion can be expressed as Q=-kA(dT/dx). What do the quantities Q, k, a and T represent in a) heat conduction b)mass diffusionarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Welding: Principles and Applications (MindTap Cou...Mechanical EngineeringISBN:9781305494695Author:Larry JeffusPublisher:Cengage Learning
Welding: Principles and Applications (MindTap Cou...
Mechanical Engineering
ISBN:9781305494695
Author:Larry Jeffus
Publisher:Cengage Learning
Differences between Temporary Joining and Permanent Joining.; Author: Academic Gain Tutorials;https://www.youtube.com/watch?v=PTr8QZhgXyg;License: Standard Youtube License