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What is ramp rate?
We are calculating the response time of the ramp input signal (temperature), ramp rate is a Temperature varies linearly with time.
How steam turbine exhaust hood temp increased?
as the air passes through adiabatic compression volume shrinks and hence temperature rises
What are the Main parameters that affect the injection molding process?
Following parameters affect injection moulding process. 1) nature of material (type of plastic) 2) rate of injection 3) size of the component being moulded 4) efficiency of machine 5) type of cooling method adopted 6) curing time in the mould
What are the limitation of iron iron-carbide diagram?
1) The nonequilibrium martensite does not appear on the diagram; and 2) The diagram provides no indication as to the time-temperature relationships for the formation of pearlite, bainite, and spheroidite, all of which are composed of the equilibrium ferrite and cementite phases.
How many btus are required to keep water boiling for 24 hours?
I had the same question and the only answer I could find was this: To raise the temperature of 1 LB of water from 40 ºF to 41 ºF would take 1 BTU To raise the temperature of 1 LB of water from 177 ºF to 178 ºF would also take 1 BTU However, if you tried raising the temperature of water from 212 ºF to 213 ºF you would not be able to do it. Water boils at 212 ºF and would prefer to change into a gas rather than let you get it any hotter. Something of utmost importance occurs at the boiling point of a substance. If you did a little experiment and added 1 BTU of heat at a time to 1 LB of water, you would notice that the water temperature would increase by 1 degree Fahrenheit each time. That is until you reached 212 ºF Then something changes. You would keep adding BTU's, but the water would not get any hotter! It would change state into a gas and it would take 970 BTU's to vapourize that entire pound of water. This is called the Latent Heat of Vapourization and in the case of water it is 970 BTU's per pound.
Why wont fibreglass resin set?
Fiberglass resin may not set due to factors such as incorrect mixing ratios, low temperature, old or expired resin, improper surface preparation, or inadequate curing time. It is important to follow the manufacturer's instructions carefully to ensure proper curing of the resin.
If you cover modge podge with resin epoxy will it still go yellow after a time?
yes the resin will cause it to yellow
What is a post curing process in epoxy?
Post curing in epoxy involves subjecting the cured epoxy to elevated temperatures for an extended period of time. This helps to improve the mechanical properties and performance of the epoxy, making it stronger and more durable. Post curing is often recommended for critical applications where high performance is required.
How could you speed up the time it takes for resin to set?
Epoxy resin is liquid before applied on dents on the car. it dries quickly in warm weather.
Will J-B Weld work without the hardener?
I fact yes it will. The hardener is just that, to speed up the curing time. With extra it cures faster, with less it takes longer. If you dont use any at all the curing will take exponentially longer, however it is epoxy steel resin and it will eventually dry (cure) even without the hardener it can not stay wet forever
Will epoxy resins withstand the temperature of boiling water?
Most epoxy resins can withstand temperatures up to about 120-150°C (248-302°F), so they should be able to withstand the temperature of boiling water (100°C or 212°F) without significant degradation. However, prolonged exposure to boiling water may affect the appearance or properties of the epoxy resin over time.
How can you speed up the time it takes for a resin to set?
Epoxy resin is liquid before applied to holes and dents on the car. It dries quickly in warm weather. You can also heat it to speed up the time it takes to set.
Can epoxy be microwaved?
Epoxy can't be microwaved to speed up it setting. It is not a good idea to put it in the microwave at any time. The best idea with epoxy resin is to let it harden naturally and slowly. This is the best way to achieve full strength and adhesion.
A catalyst is added to the fiberglass resin to do what?
A catalyst is added to fiberglass resin to initiate the chemical reaction that causes the resin to harden or cure. This process is known as polymerization, and the catalyst helps speed up the curing time of the resin, allowing it to form a strong and durable composite material.
What is the best glue to laminate Ivory?
Epoxy resin is often recommended for laminating ivory due to its strong bond, durability, and ability to be polished to a high shine. It is important to use a clear epoxy resin to ensure the natural appearance of the ivory is not affected. Make sure to follow proper safety precautions when working with epoxy resin.
What is the curing period?
Time taken for complete chemical bonding with the help of temperature, which gives Strong film
What is resin casting?
Resin is a natural or synthetic compound which begins in a highly viscous state and hardens with treatment. Typically, resin is soluble in alcohol, but not in water. There are a number of different classes of resin, depending on exact chemical composition and potential uses. There are numerous applications for resins, ranging from art to polymer production, and many consumers interact with products which contain resin on a daily basis. Natural resin comes from plants. A classic example is pine sap, which has the characteristic sharp odor of terpene compounds. As anyone who has interacted with pine sap knows, the substance is very viscous, but it hardens over time. A number of other plants produce resins, and plant resins have been used by humans for thousands of years. Some plants exude a similar substance called gum or gum resin which does interact with water. Gum tends to be softer and more malleable than resin.
