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Which tools is used to mark the spot where a hole is to be drilled in a piece of metal?
Centre punchCenter punch
Why does a blacksmith hammer a hot piece of iron while making a tool?
To shape metal you must hit it when it's hot. The colder iron, the less easily you can shape it. In addition, it can break if it's not hot. When iron is heated sufficiently, it becomes plastic, and it can be deformed without breaking. It can be worked easily and effectively by a smith when it's hot.
What type of weld is it when the edge of one piece of metal is placed at ninety degrees on the surface of another piece of metal?
Two pieces of metal welded at a 90 degree angle is called a corner joint. Other common joint types: -Butt joint: two pieces of metal laid side by side and welded at the meet, essentially forming one sheet. -Lap joint: similar to a butt joint, but with overlap between the two pieces. -Tee joint: one piece is welded at a 90 degree angle to the second, but not at the edge (forming a 'T' shape).
If you use a hacksaw to cut a piece of metal why do they both become hot?
due to heat generated by friction of two metallic surfaces
What is Pittsburghh joint in HAVC duct work?
Refer to the SMACNA reference for metal duct construction. The Pittsburg joint is used for most commonly fabricated metal retangular ducts. Most modern sheetmetal fabrication shops use a mechanized piece of equipment to create the Pittsbugh joint on one edge of the sheet metal that is being formed into a retangular duct. The Pittburgh joint is basically a series of bends in the sheetmetal that create a female joint that will accept the male end of the rectangular duct. The female joint includes an extended section of sheet metal that is mechanically or manually hammered over the male edge of the sheet metal once it is positioned within the Pittsburgh joint. It is much easier to understand when viewing a piece of flat piece of sheet metal that is being formed into a section of duct with a mechanized piece of equipment found in most sheet metal shops. I have created a Pittsburgh joint with a manual hand break for specialized duct fittings. I hope the information has been helpful. Ralph Pimentel C.B.O. Member ICC ICBO IAMPO Member Sheet Metal Workers Local #77 National Building Consultants Member State of Kansas Home Inspector Board, Vice Chairman
When a piece of mild steel is heated by the application of an electric arc the metal?
contracts (get smaller)
What happens when a piece of metal is always heated?
It will bend eventually because u have heated it up so much it wouldn't be able to function It becomes molten like the lava in the earth.
When one end of a piece of metal is heated what happens?
When one end of a piece of metal is heated, the metal molecules gain energy and vibrate more rapidly. This causes the molecules to expand, leading to the expansion of the metal itself. As a result, the metal will bend or warp due to the uneven distribution of heat throughout its structure.
A piece of nonmagnetic metal that becomes magnetized when an electric current flows around is called?
The piece of metal is called a ferromagnetic material, and the phenomenon where it becomes magnetized when an electric current flows around it is known as electromagnetism.
If two similar pieces of metal are heated one to red hot and the other just hot are plunged into water why does the hotter piece cool the quickest?
metal
A 122-g piece of metal is heated to 289C and dropped into 82.0g of water at 29C. what is the specific heat JgC of the metal?
Not enough information is provided to answer the question.
A piece of nonmagnetic metal that becomes magnetized when an electric current flows around it is called an?
electromagnet
When a rectangular piece of heated metal is allowed to cool at room temperature?
When a rectangular piece of heated metal is allowed to cool at room temperature, it will lose heat to the surrounding air through conduction, convection, and radiation. The rate of cooling will depend on factors such as the metal's thermal conductivity, surface area, and the temperature difference between the metal and the environment. As it cools, the metal may contract slightly, which can lead to changes in its dimensions. Eventually, the metal will reach thermal equilibrium with the surrounding environment.
When you pass heat which metal will produce electricity?
No single piece of metal will produce electricity when heated. You will need two different metals, mechanically touching. When the join between the metals is heated, it will produce electricity, dependant on the metals used. This is known as a 'thermocouple'.
If you continue heating a piece of room temperature metal in a dark room what will be its first visible color?
The first visible color of the room temperature metal will depend on the specific metal being heated. Typically, metals start to glow red when heated to a certain temperature. This red color is due to incandescence, where the metal is emitting thermal radiation as it heats up.
What is the first color of light that you can see when a piece of metal is heated?
The first color of light you will see when heating a piece of metal is red, followed by orange, yellow, and white as the temperature increases. This is due to the metal emitting different wavelengths of light as it heats up.
When a rectangular piece of heated metal is allowed to cool at room temperature in welding?
When a rectangular piece of heated metal is allowed to cool at room temperature after welding, it undergoes a process called thermal contraction. As the metal cools, its particles lose energy and move closer together, resulting in a decrease in size. This cooling can also lead to changes in the metal's microstructure, potentially affecting its hardness, strength, and ductility. Proper cooling rates are crucial to avoid issues like warping or cracking.
