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By proper composition of metal & by slow cooling & by uniform distribution of metal
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoCool it slowly.
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How is porosity caused in welding?
Hi porosity is the gas pores (or) gas pocket travel deep in the solidified weld bead. Major causes $ Inadequate shielding gas $ Poor welding technique $ Damaged welding accessories $ Natural effects like wind flow
What is hot shortness?
Sulfur in steel is considered injurious except when added to enhance machinability. Sulfur readilly combines with iron to form a low melting iron sulphide. Sulfur causes hot shortness in steel unless sufficient manganese is added. Sulfur has a greater affinity for manganese than iron and forms manganese sulphide which has a meltin point above the hot rolling temperature of steel, which eliminates hot shortness. By hot shortness we mean that the steel will literally break apart during hot rolling resulting in a scrapped product
Summarize the major accomplishments achieved during this performance appraisal period?
major accomplishments during performance during apprasial period
What are the safety measures that can be taken for scaffolding?
The utility of a scaffold cannot be denied but the hazards which are associated with scaffold are also very common. This is the reason why we need to take precautions and safety measures during scaffolding.Anti Fall Protection System : it can prevent workers of being trapped in the building components in case a mishap happens, the person can be saved.Proper Erection : the structure must be solid and the method used for scaffolding erection must also be accurate.Safety Harness and Instructions : A safety harness must also be used and instructions should be given to the workers so that hazards can be prevented.
When did the delivery of current expected to increase during defibrillation?
delivered current during defibrillation is expected to increase with which of the following?
What has the author Surya P Kodali written?
Surya P. Kodali has written: 'Gravity segregation of primary particles during solidification of binary eutectiferous alloys' -- subject(s): Alloys, Testing, Solidification
Which liquefied metal expand on solidification?
grey cast iron because during solidification the graphite flakes expands Bismuth and antimony are metallic elements that expand on solidification (~3-4%). These elements solidify in a monoclinic (not close-packed) structure which becomes more dense when it transforms from a solid to a liquid. A range of bismuth alloys are used for low temperature melt applications that have take advantage of the expansion to get close tolerance die castings. Gallium is a third metal element that expands during solidification (31 deg C).
Where does solidification happen in the water cycle?
Solidification involves conversion of water to ice. It happens during snowfall in precipitation.
Which metal increases in volume during solidification?
Gallium
What is hot shortness in welding?
During weld pool solidification , impurities like sulfur get cooler at lower temp than surrounding weld hence due solidification of sulfur there is crack observed.
Which would most likely occur during the formation of igneous rocks?
solidification of molten materials
What were important alloys in use at the time of the copper age?
i don't think they had the technology available to create alloys during the copper age
What is the best evidence for determining the cooling rate of an igneous rock during its solidification is provided by what?
the crystal size of its minerals
What is the best evidence for determining the cooling rate of an igneous rock during its solidification is provided by?
the crystal size of its minerals
How do you stop solidification of coconut oil during winter season?
just add 10% Olive or Palm oil to it .
Crater pipe in tig welding imperfection?
crater pipe is shrinkage cavity and is occurring during weld metal solidification
What year was the carnival of the animals composed?
1886, although Saint-Saens prevented performances of it during his life. 1886, although Saint-Saens prevented performances of it during his life.
