How the angle and speed effect weld joint?
The angle of the torch or tungsten electrode like that used in Tig welding , or the MiG stinger, or any consumable rod like that of a 7018 rod used in SMAW welding. All run a little bit cooler of a puddle of molten metal when held at an angle. When feeding rod material into a vertical joint going in the upwards direction this lends it self to better fill and penetration in the joint. More filler rod is going to be deposited into the weld joint going in the upward direction then if one is welding in the downward direction on a vertical pass on any piece of material, also at an angle the puddle is a going to run a little cooler. When the electrode, stinger or torch is held directly held over the base material this changes the molten pools temperature to a slightly higher temperature .when holding a gas flame torch and using the back handed method the enveloping surrounding flame helps keeps the material's temperature higher in the weld joint area, that was just welded, higher temps after the welding process to allow for slower cooling,which can have a beneficial effect. When the Speed or feed rate of the welding rod or wire is feed to fast into the molten puddle or the movement of the rod, stinger or torch is feed to fast across the material to quickly and the delutement of the rod into the base material and the welds surrounding area around the weld bead will then be an incomplete or cold weld it will form on the base metal, which can leave undercut or lack good fusion or good penetration a poor weld is typical, this is not the desired result. When welding is performed by the human hand, one should not speed through the welding process , focus and care on the molten puddle and its conditions during the welding process and being certain of good penetration is more important then how fast one welds.
What is the meaning of f6 trim in globe valve?
You will have to consult the manufacturer. A cast iron or steel globe valve could be trimmed (disc and seat) with bronze, iron, steel, stainless steel stellite, ceramic, rubber, neoprene, viton....or any series of different trims. The manufacturer usually determines trims by code numbers. Kinka valves indicates that this trim material on their valves is 304 stainless steel (13% chromium, and nickel content).
this problem could be caused by any number of things. Is there any scrape marks on the material, or on the punch and die set ?. ( this could indicate an alignment issue between the upper and lower C axis, or an incorrect ram height setting. Have you had a major collision recently ?. If you can supply more information, I may be able to help narrow down the cause.
Fracture mechanics is the study of how cracks form and propogate through variuos materials. Often times during design an engineer will assume a crack in the material to or use x-ray to determine the size of cracks in the material. Fracture mechanics approaches require that an initial crack size be known or assumed. For components with imperfections or defects (such as welding porosities, inclusions and casting defects, etc.) an initial crack size may be known.
How does the shape of graphite in cast iron affect its properties?
The shape of graphite in cast irons has the following
basic forms:
(a) Flakes. Graphite flakes have sharp edges
which act as stress raisers in tension.
This shape makes cast iron low in tensile
strength and ductility, but it still has high
compressive strength. On the other hand,
the flakes also act as vibration dampers,
a characteristic important in damping of
machine-tool bases and other structures.
(b) Nodules. Graphite can form nodules or
spheroids when magnesium or cerium is added to the melt. This form has increased ductility, strength, and shock resistance
compared to flakes, but the damping
ability is reduced.
(c) Clusters. Graphite clusters are much like
nodules, except that they form from the
breakdown of white cast iron upon annealing.
Clusters have properties that are basically
similar to flakes.
(d) Compacted flakes. These are short and
thick flakes with rounded edges. This form
has properties that are between nodular
and flake graphite.
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What did the clothes dryer look like when it was first invented?
pictures of the first ever clothes dryer
What is nuclear fuel residence time?
Generally speaking, the term residence time as applied to nuclear fuels speaks to the amount of time something like uranium (meaning 239U) will have to spend in the neutron flux of a breeder reactor to become transformed into fissile nuclear fuel. The geometry (size and shape) of the fuel pellets and the location in the reactor (the neutron flux density) will dictate how long the stuff will have to be left in there to produce the desired product.
What function does a circuit design software serve when designing analog and digital circuit?
Licking the sweat off my balls
What is the difference between thermosetting and thermoplastic cable?
The terms are used to categorise cable insulation according to its properties, such as its operating temperature, rather than the ingredients from which it is are made.
These terms are now used by the IEE Wiring Regulations to describe insulation formerly described, for example, as 'pvc' (a 'thermoplastic' material) or rubber ( a 'thermosetting' material).
NO, in order to 'charge' a battery, the charging device must be at a higher voltage than the battery in order for current to flow to the battery.
What is the difference between a geometric constraint and a numeric constraint?
Dealing with engineering or CAD, a geometric constraint deals with constraints such as parallel or perpendicularity. A numeric constraint deals with distances and size. Width, length, and depth are examples of these.
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Geometric constraints are constant, non-numerical relationships between the parts of a geometric figure. Numeric constraints are number values, or algebraic equations that are used to control the size or location of a geometric figure :)
What is the function of a jacket in a jacketed autoclave?
It surrounds the chamber of the sterilizer, separated from the chamber by about 3 inches. It allows steam to continuously circulate in this space, also maintaining a supply of steam ready to enter the chamber immediately.
Can you mine bronze or do you have to mine the separate components?
Bronze is an alloy of (usually) copper and tin. We mine the metal ores separately and then combine them to make bronze.
What is a foundry technician specialist?
My foundry in WI is classifing it as a journeyman molder. His specific duties would include the making of the actual molds themselves to the core to go in them (whether they be no-bake, shell, or SO2 core) or fitting and pasting core together and mudding them and gauging them for areas that can not be sawed or sanded.
Difference between fat and oil?
Fat and oils are similar chemically, but the subtle differences that do exist have major effects on health. Fats and oils both consist of molecules that have 'backbones' of long chains of carbon and hydrogen atoms chemically bonded together.
These molecules are called 'fatty acids'. Fats and oils in the diet (and most fat in the body) contain three fatty acids chemically bonded to form one fat molecule.
A fatty acid may be 'saturated' with hydrogen (ie, all the carbon atoms along the fatty acid backbone have the maximum possible number of hydrogen atoms attached), 'monunsaturated' (two adjacent carbon atoms have less hydrogen atoms) or 'polyunsaturated' (more than two carbon atoms along the fatty acid backbone have less hydrogen atoms)
Fats from other animals (eg pork, chicken) are less saturated than ruminant fat and contain some polyunsaturated fatty acids.
Fats from game meat (eg, kangaroo, deer) tend to be lower still in saturated fatty acids and often contain significant quantities of a range of polyunsaturated fatty acids. Fats from fish are generally highly unsaturated and contain a form of polyunsaturated fatty acid known as 'omega-3' -
Because butter and margarine both contain some water (about 20%), they provide ~30 kJ per gram. Cream contains even more water, so the energy content of 1mL (~ 1gram) of cream is ~14 kJ.
Cooking oils and fats generally contain little or no water, so they provide the full 37 kJ per gram. Although all pure fats provide about the same amount of energy, there is some evidence that the effects of fats on weight gain differ according to their chemical composition.
It appears that the degree of saturation influences the amount of weight gained or lost on an otherwise similar diet.
To generate any sort of power on Earth, you need to transform energy from one form to another.
The brakes on your car for example, turns kinetic energy (friction) into thermal energy in order to generate the stopping power. Energy is all around us, and it cannot be destroyed, only transformed.
The trouble then comes to figuring out the best ways to vent the thermal energy from the brakes to make them more effective.
In space an object has 'Mass' but not 'Weight'. As weight is calculated against gravity, which is obviously missing in space.
There is also no air, no energy. So if a spacecraft is propelled through space there is no resistance to push it faster, or push against it to slow it down. Its a void where a spacecraft would have to transform it own energy (in the way of thrust) in order to maneuver
What is molecular weight of SAE 40 oil?
Manufacturers mix various oils to make an 'SAE 40' oil product. Such a mixture will not have a molecular weight.
primary goal of software development
Is blast furnace a batch furnace?
A blast furnace runs continuously, and input materials are continually dumped in at the top to make their way down through the furnace. Shutting down a blast furnace for relining or other work is a major event in its life.
it is the method used in textile industry ,it is done by removing sericin,a glue like substance fro silk by using soap to improve the quality of silk
What is industrial maintenance?
Industrial maintenance is the term for the process of keeping the equipment running at peak efficiency in a factory. It includes scheduled cleaning, parts replacement and lubrication, as well as repairs. Industrial maintenance technicians in advanced manufacturing plants troubleshoot electrical, mechanical, pneumatic, hydraulic and computer-controlled systems.