Can someone please help me to solve ALL of the following questions correctly PLEASE and THANK YOU!!!!! 1. Hot hardness is important in cutting tools, becausea. transformations can occur at highly elevated temperatures.b. cemented carbides can decompose at elevated temperatures.c. of delamination of coatings.d. of decreased tool life and dimensional instability.e. of grain growth within the carbide tool.2. A type of welding that has relatively deep penetration isa. shielded metal arc welding (SMAW).b. gas tungsten-arc welding (GTAW).c. electron-beam welding (EBW).d. laser-beam welding (LBW).3. The heat effected zone or HAZ is important to the integrity of the weld, becausea. solidification has occurred in the HAZ.b. the high heat input can change the microstructure of the base material next to theweld.c. there is rapid cooling of the filler material.d. the molten filler metal can have inclusions.e. porosity can often develop in the HAZ.4. The integrity of a brazed joint depends heavily on capillary action anda. hot hardness.b. heat input.c. wettability.d. residual stresses.e. microstructure.5. Soldering differs from brazing in thata. soldering uses a flux and brazing does not.b. soldering uses a point source of heat and brazing does not.c. the substrate metal in brazing is melted and soldering it is not.d. brazing uses an interference fit and soldering does not.e. soldering uses lower temperatures than brazing. 6. Bolting bridges together is often preferred to welding, since bolting (think about whywelds are often painted)a. is cheaper for assembly of large structures.b. allows for members to be replaced.c. is capable of handling higher loads.d. minimizes crevice corrosion.7. Electroplating requiresa. an anode, a cathode, and an electrical circuit.b. a similar metal to the substrate.C.a flux.d. a smooth flat surface.е.cladding.8. A polymer that would be produced by condensation polymerization isa. ultra-high molecular weight polyethylene.b. polypropylene.c. polyethylene terephthalate.d. polyvinylchloride.e. polystyrene.9. A good indication that a polymer is completely amorphous is that ita. is transparent.b. is translucent, but not transparent.С.has relatively high density.d. is a thermoset.e. is brittle.10. Recyclable polymers typically are (research thermosets)a. made via addition polymerization.b. made via condensation polymerization.c. thermoplastics.d. thermosets.e. completely amorphous.

“Since you have asked multiple question, we will solve the first question for you. If you want any…

1. Hot hardness is important in cutting tools, because a. transformations can occur at highly elevated temperatures. b. cemented carbides can decompose at elevated temperatures. c. of delamination of coatings. d. of decreased tool life and dimensional instability. e. of grain growth within the carbide tool.

1. Hot hardness is important in cutting tools, because a. transformations can occur at highly elevated temperatures. b. cemented carbides can decompose at elevated temperatures. c. of delamination of coatings. d. of decreased tool life and dimensional instability. e. of grain growth within the carbide tool.

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter27: Weldability Of Metals

Section: Chapter Questions

Problem 19R: What problems can occur to stainless steel as it is allowed to form carbide precipitation during...

See similar textbooks

Similar questions

Answer by true (T) or false (F) for the folling sentences 1. Fusion welding means that the two surfaces to be joined and the filler metal are meling during welding and then solidifying in similar menner to local casting process. 2. In oxyacetylene welding process, the welding is done using oxidizing flame only. 3. Explusive welding process produces strong joints of dissimilar materials that are not weldable by are. 4. Hot working leads to eliminating the porosity in the metal and increasing the strength and hardness. 5. Work hardening is a characteristic induced in the processing part because of the heat treatment.
2.8 Advantages of Submerged Arc Welding Cost per unit length of joint is relatively low The arc is under a blanket of flux, which virtually eliminates arc flash, spatter, and fume. • Extremely high deposition rates and welding speeds are possible. • Sound welds are readily made (with good process design and control). High current densities increase weld penetration and decrease the need for edge preparation. High speed welding of thin sheet steels at over 2.5 m/min is possible. Can be easily Automated Minimum welder training is required (relatively unskilled welders can be employed). • Low hydrogen weld deposits can be produced. • The flux acts as a scavenger and deoxidizer to remove contaminants such as oxygen, nitrogen, and sulphur from the molten weld pool. This helps to produce sound welds with excellent mechanical properties. 26 2.9 Limitations of Submerged Arc Welding Initial cost of wire feeder, power supply, controls, and flux-handling equipment is high. Limited to ferrous…
A. In arc welding, what is the importance of heat effected zone in producing a crack free weld?
When welding using Oxyacetylene method on medium or high carbon steels, which type of flame is better (i) oxidizing or (ii) reducing flame? Justify your answer
1. Wire drawing is cold working process use to decrease the dimeter of wire. A) Explain the process. B) Discuss the effect of this process on mechanical properties in'details? Sketch to illustrate your explanation. 2. Name and explain a manufacturing process of making open end wrench? 3. How can you decided whether to use a cold work or hot work processes? 4. Briefly explain arc welding and oxyacetylene welding? ( 5. Submerged arc welding is suitable for non-ferrous metals. YES, OR NO, AND EXPALIN WHY? 6. Briefly explain powder metallurgy (P/M)? 7. What is flux in welding. What is the main purpose of using it? . 8. Name and explain a method used to measure particle size of powder, especially if you have variety of sizes?( 9. Briefly explain the metallurgy of welding. Sketch it?
Select an appropriate electrode and flux of Submerged Arc Welding (SAW) process for nickel alloy steel.
5) Which one of the following options is true about friction stir welding? Fine microstructure is produced. Good dimensional stability and repeatability is obtained. |Absence of cracking in welds. OShielding gas is used.
» A Moving to another question will save this response. uèstion 18 In 'reverse polarity' of arc welding O A Electrode is connected to + and most of the heat is generated at the electrode O B. Electrode is connected to - and most of the heat is generated at the workpiece O C. Work piece is connected to + and most of the heat is generated at the workpiece O D. Work piece/is connected to-jandimost of the heat is generated at the workpiece Windows buau licyl Jäil e IT:ET T-T/-E//V ENG 4) %2:
2) Which of the following is NOT true about friction stir welding? O It is a solid state process Fine grained structures can be obtained O It eliminates friction welding problems O It alters the chemical composition of the workpiece
Define Arc welding.
1)a) Why is automation of the covered electrode arc source difficult?b) what properties is a metal with good resistance welding ability expected to have?c) Why is the heat transfer factor higher in arc welding processes with the consumed electrode than the methods used with the non-consumed electrode?d) Why is it important to weld thin and long instead of thick and short?e) why is it important that the source root is designed to be forced to press, not pull? 2) there is a characteristic liquid penetration error on a large piece of steel poured in the sand mold. The surface of the piece consists of a mixture of sand and metal.a) Explain at least 3 of the steps that can be taken to correct this error.b) what other types of casting errors may possibly occur in each of these steps? Explain 3) grain structure formed in part after casting;a) Describe by drawing a figure.b) what problems can this grain structure pose? Please explain. How can these problems be cured?4) explain two of the…
9) The peak temperature experienced by the partially refined grain zone during welding of medium carbon steel is Higher than liquidus temperature In between liquidus and solidus temperature In between upper and lower critical temperature O Lower than lower critical temperature