why must the tip of the tungsten be hot?

Q: Two stainless steel foils of 0.2 mm to be joined. Which of the following process is best suited? MIG…

A: The correct answer is plasma arc welding.    Welding of stainless steel foils of 0.2 mm require…

Q: What special protective items can be worn to provide extra protection for a welder’s hands, arms,…

A: The protective items that can be provided for extra protection for: - Hands: - Hand gloves are made…

Q: Which one of the following AW processes uses an electrode consisting of continuous consumable tubing…

A:

Q: 9) Tungsten electrode is coated with low ionization potential elements for Increasing current…

A: In tungsten electrode welding, welding electrodes usually coated with metallic oxides such as oxide…

Q: what setting needs to be adjusted before welding?

A: Setting needs to be adjusted before welding :-

Q: Name three methods used to perform welding, cutting,or brazing operations.

A: In this problem, it is asking about the name of three methods which are used to perform welding,…

Q: Arc welding is an example of non pressure welding. Select one: True O False

A: Answer: True Yes, Arc welding is an example of a non-pressure welding process.

Q: A soldering iron 'bit' is made of?    A.Brass    B.Tin    C.Steel    D.Copper

A: We can find the answer as below A soldering iron 'bit' is made of?

Q: History of Welding Machine 1. How it's started?

A: Welding can trace its historic development back to ancient times. The earliest examples come from…

Q: Which one of the following welding processes is suitable to weld bimetallic strips for measuring…

A: (1) Ultrasonic welding is used to weld very thin metal pieces. For instance it is used to weld the…

Q: Why must cast iron weld metal be ductile

A: Cast iron is the alloy of carbon and iron. Cast iron has high hardness due to presence of high…

Q: What forms the basis for the AWS identification systemfor nonferrous covered electrodes?

A: The welding industry has adopted the American Welding Society’s(AWS) classification number series…

Q: What protects the molten weld pool from oxidationduring a gas weld?

A: According to the oxyfuel gas welding   Primary reaction C2H2 + O2 = 2CO + H2 + LOSTS OF HEAT…

Q: 1. Define Metal Inert Gas (MIG) Welding Process? 2. From the following, circle the welding processes…

A: as per guideline i have to solve only first three question of  yours given = question about welding

Q: 10)The process of the solder molecules combining with the molecules of the metals being soldered is?…

A: To find : the process of the solder molecules combining with the molecules of the metals being…

Q: what PPE should be worn when welding?

A: PPE:  The PPE stands for personal protective equipment. Some PPE parts need to be wear during…

Q: How set up electric welding machine, prepare electrode, workpiece and equipment auxiliaries used in…

A: Welding is a manufacturing method that involves fusing two or more pieces together using heat,…

Q: In tipped tool, inserts are having - material. O a. tool holder O b. different O C. same o d.…

A: in tipped tool, inserts are having material. O a. tool holder O b. different O c. same O d. brazing…

Q: e specific heat of the metal?

A: Answer- 386.1

Q: elding gas have on some rutil

A: given: What benefits does adding an externally supplied shielding gas have on some rutile based…

Q: What helps hold the weld in place on a 4G weld?

A: 4G weld :-  It is an overhead position used for butt welds. Welders need to hold the torch from…

Q: When are the loads considered negative?

A: While analyzing a truss or beam or any other structure, we start by assuming all the members…

Q: A good electrode holder in arc welding should be Weak insulation to protect against accidental…

A: Hi and thank you for the questions. Since you have asked multiple questions, we will solve the first…

Q: 62. Silver is used as filler metal in soldering process. Select one: True False

A: Soldering is a process in which base material components are joined together by filler material…

Q: how to weld tool steel with the oxyfuel process

A: Oxy-fuel process: Oxy-fuel welding includes those welding operations which use the combustion of a…

Q: Which of the following tools is not essential while doing arc welding?

A: Answer:  Snips

Q: 2) Which one of the following statement is .. not pertaining to ultrasonic welding process?

A: Ultrasonic welding: It is a solid state welding process in which two materials are rub against each…

Q: 38- Anodic protection is done by . O a- applying an external current. O b- coupling with an active…

A: Corrosion occurs due to the contact of metals with water vapor. When an anode or cathode comes in…

Q: The strength in the weld zone of an age-hardening aluminium alloy is often higher than in the heat…

A: particle that does not dissolve might transform into equilibrium phase instead , this is more likely…

Q: Question: Which of the following material cannot be used as a moderator?

A: To select the correct option.

Q: If you need narrow deep penetration weld for heavv base metal, which type of current polarity you…

A: Solution:

Q: What is meant when a metal is said to have goodweldability?

A: Weldability describes the ease with which a metal can be welded properly. The weldability of any…

Q: types of welding seams and their uses

A: Answer is given below

Q: What is the higher voltage at the electrode before the arcis struck called? What is its advantage to…

A: Arc welding is the process of joining metal pieces together with high heat from an arc that is…

Q: Arc welding is an example of pressure welding. Select one: True False

A: Arc welding is a type of fusion welding process in which electric arc is generated to melt the…

Q: What should you do if you have to leave a piece of hotmetal unattended?

A: A responsible person should mark any hot metal with "HOT" before leaving the office in order to…

Q: what is welding process?

A:

Q: what items need to be turned on before welding

A: The terms to be turned on before welding : 1. Safety: This is the most important factor which should…

Q: Hard soldering uses alloy of silver and _______ metal. a. Zinc b. Tin c. Lead d. Copper

A:

Q: what should the amperage and voltage range be using 98% Ac+2% to weld 1/4-in metal with 0.045-in…

A: Given:  Thickness of weld,t= 1/4 in = 6 mm Diameter of wire,d= 0.045 in= 1.2 mm weld gas…

Q: Describe the meaning of each part of the following FCAwelding electrode identification: E81T-5

A: Given Data : E81T-5 FCA Welding

Q: In arc welding, if the electrode cable is negative, it is called - polarity and maximum heat is…

A:

Q: ) Which one of the following process similar to spin wel process? a) Ultrasonic Welding

A: given:

Q: 5. The temperature of the hard soldering or silver brazing is 842F°. (a) above (b) equal (c) under

A: The temperature of the hard soldering or silver brazing is about 1145°F to 1650°F

Q: What metals can be cut with the oxyfuel gas process?

A: The oxyfuel gas process is a process in which cutting of metal is done by use of oxygen and fuel…

Q: 4) Flux coatings in SMAW electrode helps in

A: Solution:

Q: How do excessive amounts of manganese affect a weld?

A: The fabrication process is the process which is involved to build a product by mixing standardized…

Q: Describe two methods of striking an arc with an electrode

A: There are two methods of striking an arc   Scratching   Tapping

Joining Processes

It is the process of permanent or temporary joining of two metal pieces with the help of heat or pressure. Two metal parts are assembled by applying an energy source for the formation of a single unit. The obtained joined metals cannot be fragmented easily with the application of any force.