Mechanical Engineering

Agro-based industry would mean any activity involved in cultivation, under controlled conditions of agricultural and horticultural crops, including floriculture and cultivation of vegetables and post-harvest operation on all fruits and vegetables. The development of agro-industries has assumed crucial importance in the economic planning and progress of the country. This paper highlights the development proposals of agro-based industries during the tenth five year plan. This study also points out that Andhra Pradesh occupied the first place with 10,183 processed food industry units and the least place was occupied by Meghalaya with only 3 units in the year 2002-03. However, there are extreme variations among different states in the number of processed food industries. It is also evident from this study that except potatoes, all the other perishable products have been showing inadequate number of cold storage plants and low capacity utilization of the existing units. This study suggests that there is a need to develop the processed food industries throughout the country in order to provide more employment opportunities and to reduce the regional imbalances.

For Injection mold, the main metal used in steel.

There many different steels are used, for example, P20, 1.2311,718H,1.2738, H13, 1.2344, 2316,S136, etc..

Usually for mould based, the steel will be SC45#,P20 or 1.2311.

For daily household product, the stell will be 718H,1.2738

For PVC material ,steel will be 1.2316 or S136,

For food product mould, for example preform mould or food contaier mould, the steel will be S136. this is stainless mould steel.

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DP is not actually to do with welding it is a form of NDT which stands for non destructive testing; DP is dye-pen where a white liquid formation is placed over the weld & a normally red enhancer is then placed over the top; this then identifies surface cracks.

planer density is the ratio of number of atoms to area of plane .

Both deal with valves. API6FA is for API 6A and 6D. API607 applies to soft-seated, quarter-turn valves.

Brittle

Cast means that the hot liquid iron is poured into a mold and then it is allowed to cool in the new shape.

This is opposite of 'Forged' or 'Stamped', where the hot metal is soft but not liquid, and it is sort of hammered into the shape you want.

Examples of common things made from cast iron:

Some boat anchors

some cooking pots and pans (the very heavy ones)

some automobile parts (engine block)

a brittle is something that breaks easily with out more opposition like bones for instance..

Yes, petrol will work in a diesel engine but will run rough for a short time before the engine needs extensive and expensive repairs.

Work hard... This is the only solution...

Pilgering is a metal-working process for reducing the dimensions of a metal tube. The two key components of a pilgering press (or mill) are a conical mandrel, which fits inside the tube, and ring dies which roll over the outside of the tube. This process reduces the diameter of the tube to the size of the mandrel and, at the same time, reduces the wall thickness of the tube from the action of the dies rolling over the outside of the tube along the mandrel. Pilgering is usually performed cold, i.e., the metal does not need to be heat-treated for the process to be accomplished, and it takes a very great number of tiny forming steps. This makes it highly suitable to use on precious metals, since almost no metal is lost in the process. This also is a superior metal-forming process to drawing, since it can reduce the diameter of a tube to a greater degree than drawing while the tube still remains round and retains greater tensile strength against forces such as torque and stress fracturing. Cold pilgered tubes are used for such things as lightning rods, baseball bats and golf clubs, which can survive repeated sudden large-force impacts.

On bankstick etc its 3/8th of a inch BSF thread.

5 hp

Otis

In general type of weld, welding requirement, works complexity degree & labour cost. Type of weld - TIG / MIG etc Welding requirement - Length, width, depth & way of weld. (some customers have their own standard way of welding which is exclusive. Work Complexity - Let say a structure has 30 points from different direction hence you may have to make few turns of structure rotation and resulting longer time needed to complete the works and risks involved when handling those heavy stuff. Normally it should charge more than fix point rate like 1.3 x FIXED RATE Labour cost - It is very subjective as skilled worker come in few grades by experience. Hence you have to determine yourself what work it suitable for specify worker. The hour rate can be divided by estimate welding points can be completed within an hour.

the process of manufacturing

it is commonly remarked steel. so it it isn't stainless steel.

SAE J475 is a specification for thread sizes on tubing. 38 may be a typographic error for a 3/8" thread.

The air cooling of a 4 stroke petrol engine takes when the air flows on the engine .it takes not by radiation.

One example of a lever in a bedroom is a doorhandle. Whether the doorknob is round, spherical, or another shape, it is still a lever.

Wall thickness of 600 mm is 9.02 for pressure rating of PN 10 & 10.52for pressure rating of PN 16.

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gland steam temp should be nearer to less than turbine lub. oil flash point.

Circular design is most efficient considering handling of load as load gets shared through out the structure,this is not possible with any other possible shape such as triangular rectangular as there are vertices present in them were load will get concentrated and will lead to breakage .

30000000psi