Hey guys.......I have a farmer/mechanic type of question for you. I am doing a CAD(mechanical desktop) drawing of a piston and rod assembly(Piston,rod,bearings, wristpin, rings, bolts, etc....) I am almost done with this process, but I need to put it on paper.........Once we put it on paper, we have to make a parts list, and what is included on the parts list is the composition of materials.......This means what are these materials(all that I listed above) composed of......I don't know where to find this, or even have the slightest clue......



I don't know if there is specifics to they type of metal out there or not(like there is aluminum).......I'm thinking the piston is aluminum and the rod is cast iron......don't know the rest.....I have no clue what type of cast iron(if there is different types)...or what type of aluminum either.......


This is a piston/rod assembly from a Farmall "M" by the way. I actually think anything will work wether it is John Deere or International.....it probably should be an older model though.

Don't worry guys, I'm just drawing this........still JD at heart. The M does make a good auger tractor though.....




Thanks for the help.......I don't know if you can understand what I need or not. Any thing will help.

Brad

 

Most of the pistons are made out of aluminum alloy. Some pistons are also coated with tin or moly graphite to reduce scuffing. Some pistons also have a steel strut insert to control piston expansion. A standard cast-aluminum piston contains 9%-12% silicon and is called a eutectic piston. To add strength, the silicon content is increased to about 16% and is called a hypereutectic piston. These pistons are also about 25" lighter than standard pistons. Forged pistons are more dense and stronger than standard pistions. These are used in high performance engines. Often in supercharged or turbocharged engines. They generally run about 20% cooler than standard pistons. The piston pins are alloy steel and are case hardened and sometimes chromium plated to increase their wearing qualities. Piston rings can be made from cast iron, pearlitic, nodular iron, steel, or ductile iron. They also can have a variety of coatings, such as chromium or molybdenum on cast iron rings, or moly-chrome-carbide commonly used on OEM equiptment. Ceramic-coated rings are also commonly used on heavy duty, turbo, or supercharged engines where extra heat resistence is needed. The oil rings commonly use a stainless steel spacer-expander. The rods are manufactured in cast iron, forged steel or aluminum (racing applications), or powdered (sintered) metal process. The powdered metal rods are being used on newer engines like the Northstar and new HEMI. The powdered rods are made by taking powdered iron, copper, carbon, and other alloying agents and placing them in a die and compacting (forging) then uder 30-50 tons of pressure. Then it goes through the sinitered process where it is heated at 2000*F. During this process, the ingredients are transformed into metallurgical bonds, giving it its strength. The rod cap is then fractured to give it a precise fit. Hope this can help you some

 

Thanks BBS...........that helps a lot...........