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How do you prevent the occurrence of slag inclusion and undercut?
Wiki User
∙ 11y ago
The following techniques can be used to prevent slag inclusions:
Use welding techniques to produce smooth weld beads and adequate inter-run fusion to avoid forming pockets to trap the slag.
Use the correct current and travel speed to avoid undercutting the sidewall which will make the slag difficult to remove.
John Albert Palermo
Wiki User
∙ 11y agocorrect current settings
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What is remedy to prevent slag inclusions?
Remedies to prevent slag inclusions - Avoid atmospheric contamination using proper welding procedure e.g. adequate Shielding Gas Proper removal of slag from weld bead surface using wire brush Redesigning the weld joint to permit sufficient space for manipulation of the puddle of molten weld material
What is a ash hopper?
An Ash Hopper can be one of two things: 1) ash hoppers were used to funnel the lye out of ashes to make soap. (before soap came out of fancy factories, like it does today, and had to be made at home) The ashes had to have water run through them to remove the lye, so ash hoppers were enclosed, and they were "V" shaped to control where the lye went. 2) ash hoppers are can be used to collect the ashes and slag from steam generating coal powered boilers. Without Ash hoppers, a furnace would get clogged with coals during use, and become inoperable. This type of ash hopper is usually water cooled to prevent overheating from being under the furnace, and to help ash and slag leave the system at a safer temperature. Hope this helps!
How is iron refined?
Iron is refined by a blast furnace. A furnace is filled with iron ore, coke (which is charcoal made from coal) and limestone. Huge amounts of air are blasted into the furnace, the calcium from the limestone combines with silicates (which are minerals containing silicon and oxygen) to form slag (which is run off ore from the furnace). A layer of liquid iron collects under the slag, at the bottom of the furnace. The liquid iron is periodically let out to cool. Charlie
What are the advantages and disadvantages of tig welding?
Advantages Can be used to weld almost any metal as well as dissimilar metals. Gives very good quality welds (structurally and appearance) No slag involved Disadvantages Slow requires high skill to master
What raw material are put into a blast furnace?
The blast furnace is a huge, steel stack lined with refractory brick, where iron ore, coke and limestone are dumped into the top, and preheated air is blown into the bottom. The raw materials require 6 to 8 hours to descend to the bottom of the furnace where they become the final product of liquid slag and liquid iron.
Slage inclusion welding defect?
Slag is normally seen as elongated lines either continuous or discontinuous along the length of the weld.
What is remedy to prevent slag inclusions?
Remedies to prevent slag inclusions - Avoid atmospheric contamination using proper welding procedure e.g. adequate Shielding Gas Proper removal of slag from weld bead surface using wire brush Redesigning the weld joint to permit sufficient space for manipulation of the puddle of molten weld material
What are the causes of slag inclusion?
Slag inclusions are nonmetallic solid material entrapped in weld metal or between weld metal and base metal. Slag inclusions are regions within the weld cross section or at the weld surface where the once-molten flux used to protect the molten metal is mechanically trapped within the solidified metal. This solidified slag represents a portion of the weld's cross-section where the metal is not fused to itself. This can result in a weakened condition which could impair the serviceability of the component. Inclusions may also appear at the weld surface. Like incomplete fusion, slag inclusions can occur between the weld and base metal or between individual weld passes. In fact, slag inclusions are often associated with incomplete fusion. Daniel
Is coke used to oxidise slag?
Coke is not used to oxidize the slag . It is carbon that is used to oxidize slag.
What is slag called in Australia?
its still called slag
How do you explain welding defects and explain its testing?
Defects can be varied and classified as critical or non critical. Porosity (bubbles) in the weld are usually acceptable to a certain degree. Slag inclusions, undercut, and cracks are usually non acceptable. Some porosity, cracks, and slag inclusions are visible and may not need further inspection to require their removal. Small defects such as these can be verified by Liquid Penetrant Testing (Dye check). Slag inclusions and cracks just below the surface can be discovered by Magnetic Particle Inspection. Deeper defects can be checked thru X-raying.
What can slag be used for?
waste slag from blast furnaces is used for road surfacing.
What is slag hammer?
It is a hammer with a flat broad head for knocking slag off.
What is welder slag?
Welder slag is a byproduct resulting from the welding process, often forming a layer on top of the welded joint. It consists of the residue from the flux used in the welding rod or wire, which helps protect the weld pool from impurities and contaminants while it cools. Slag is typically removed after welding to inspect the quality of the weld and ensure proper fusion.
What are slag-lines?
Slag lines are when a girl wears makeup and there is a ring around her face where her foundation hasn't been put. That is called a slag line.
How ultrasonic sensor are used in railway track?
Generally, Non-destructive testing of rails and rail-joint welds. A fault such as a cavity, crack or slag inclusion inside the metal, so invisible to the eye, will reflect the ultrasound pulse thus revealing its presence.
What is the use of Slag?
when slag has cooled it is used for cement, heat insulation and road making
