2a entrada de blog

                                       Màquines i Mecanismes   

1. Que creus que és una màquina i un mecanisme. Posa un exemple de cada.

Una màquina és un conjunt de mecanismes amb l'objectiu de realitzar un moviment.

Un mecanisme és un conjunt d'elements sòlids units per enllaços que fan un cert moviment. 

2. Que és una palanca? Com funciona? Posa algún exemple

La palanca és una màquina simple que està composta per una barra rígida que pot girar lliurement al voltant d'un punt de suport.

3. Que és una leva? Que és una excèntrica? 

Una leva és un element mecànic que permet la transformació d'un moviment circular.

Una excèntrica és una peca circular d'una màquina, l'eix de rotació no ocupa el centre geomètric.
L'objectiu és transformar un moviment de rotació, especialment rectilini.

4. Busca exemples de projectes de mecanismes que tinguin levas o excèntriques.

entrada del blog tecnologia

       
                       1a Entrada Blog



Jo soc na Sina Schober de 3er D, tenc 15 anys i visc a Son Carrió.

Els meus pares són d' alemanya però jo vaig neixer aiquí.
Soc alta, tenc els ulls verds o avegades les tenc marróns i els cabells els tenc marróns , però a s'estiu em tornen un poc  més clars.
Em definiria simpàtica, amable, confiable i sociable.

A ne's meu temps lliure faig equitació i futbol. En guany em vull apunar al gimnàs de Son Servera amb la meva germana gran.

Encara no sé de lo que vull ser de gran, però vull fer algo que està relacionat amb ciències que m'agraden molt.

Crec que amb els anys la tecnologia creixarà molt perque els humans cada vegada s'apliquen més amb això.
L'invent que més m'hagues agradat descobrir seria el movil, perque trob que el movil m'hos ha facilitat la vida molt més, perque és com un ordinador però molt més simple i més comportable.

I l'artefacte que més m'hagués agradat d'inventar és la motxila, la motxila tambè m'hos ha facilitat una miqueta més la vida.

Al taller m'agradaria construir un projecte que està relacionat amb l'energia del sol, perque trob que hi ha moltes i diferentes maneres de fer aquest treball.

metals

                                          

                                        Metals

Metal is a solid material which is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity (e.g. iron, gold, silver, and aluminium, and alloys such as steel).

Ferrous:

- Steel: Plain carbon steel are ferrous metals that consists of iron and carbon. Carbon is the

hardening element. Tougher alloy steel contains other elements such as
chromium, nickel, and molybdenum.

objects done with this metal: streel beams, parts of cars, parts of bikes, cutlery set,..

-  Iron ore: Iron ore is smelted with coke and limestone in a blast furnace to remove

the oxygen (the process of reduction) and earth foreign matter from it.

objects done with this metal: weappons from the middle age, paper clips, parts of automobiles, and beams in skyscrapers.

-  Cast iron: Cast iron is produced by melting a charge of pig iron, limestone, and

coke in a cupola furnace.It is a brittle and hard metal with above average levels of wear resistance. It is widely used in machine tools and automotive parts such as engines.

objects done with this metal: horseshoe, pan, some bench that we can see in parks, teapots,...
   Non-ferrous:


- Aluminium: It is a silvery-white, ductile metallic element, the most abundant in the earth's crust but found only in combination, chiefly in bauxite. Having good conductive and thermal properties, it is used to form many hard, light, corrosion-resistant alloys. 
objects done with this metal: Beverage Containers ( Cans and Bottles), Aluminium Foil, Food Trays, Tubes and Cartridges, Bottle Closures...












 -Copper: Copper is an excellent electrical conductor. Most of its uses are based on this property or the fact that it is also a good thermal conductor.
objects done with this metal:  doorknobs, constructions, electronic product manufacturing, and the production of industrial machinery and transportation vehicles. Copper is an essential component in the motors, wiring, radiators, connectors, brakes, and bearings used in cars and trucks.

 
-Nickel: It is a silver-white metal and mainly occurs in the arsenic and sulfide ores. It is hard, malleable, ductile and to an extent ferromagnetic (up to 360 °C). It has a fair electrical conductivity and heat conductivity. It belongs to the iron-cobalt group of metals.



objects done with this metal: vanity faucets, garden fountains, stainless steel serving trays, knick-knacks and Christmas decorations.


 -Tin: Tin is a soft, silvery-white metal that is very light and easy to melt. 
objects done with this metal: Some cans, bottles,...



- Zinc: Zinc is a lustrous bluish-white metal. It is brittle and crystalline at ordinary temperatures, but it becomes ductile and malleable when heated between 110°C and 150°C. It is a fairly reactive metal that will combine with oxygen and other non-metals, and will react with dilute acids to release hydrogen.

objects done with this metal: automobile parts, roofing, gutters, batteries, organ pipes, electrical fuses, type metal, household utensils, and building materials.



Ferrous alloys:


Carbon steel: Carbon steels are ferrous alloys that contain carbon and small levels of other alloying elements, such as manganese or aluminum.


Non-Ferrous alloys:

Bronze: Bronze alloy traditionally composed of copper and tin.

Alpha Titanium Alloys: Commercially pure titanium and alpha alloys of titanium are non-heat treatable  and are genarally very weldable . 

Material Properties

This is my mindmap of the materials properties.
https://www.mindomo.com/es/mindmap/materials-properties-3e0909d943c1ed0c742650a620879f39

Physical properties:

• Density: Is the relation between mass and volume.
• Electrical conduction: Is the capacity of an object to conduct the elerctricity.
• Thermal conduction: Is the capacity of an object to conduct the heat.
• Mechanical properties:

1. Compression: to make a force in different senses.
2. Tension: to make a force in a different senses going outside.
3. Flexion: The capacity of an object to be flexed.
4. Torsion: It's when we take a side of an object and we make a force to one side and t5hen to the other side to the opposide.
5. Shearing: to remove by or as if by cutting or clipping with a sharp imstrument.

• Optical:

1. Opaque: the light can't pass through it
2. Translucent: only part of the light pass through it
3. Transparent: all the light pass through it

• Hardness. The quality or condition of being hard
• Toughness: The state of being strong enough to withstand adverse condition or rough handling
• Permeability: the property or sate of being permeable

Tech

                                                                Technology
                  Don't buzz the iron wire

                                          

Contents page

1. Analysis of the problem and initial conditions. 

2. Research of information 

3. Possible solutions: Freehand sketched

 4. Sketch. 

5. Materials 

6. Planning.
7. Budget


           Analysis of the problem and initial conditions
         My problem is that last day I saw kids that are bored, so I will make this game.
    I will that is will be a good game, that it's don't breack easily and it must look good.

– All the selected materials must be as far as possible, recycled.

– The minimum measurements of the project should be at least as big as an A-4 paper sheet.

– The base and the background will be created out of wood .

– You can decorate it using the materials of your choice – although it should at least include a

small bulb.

– The project will be worked on and completed individually.

                                         Research of information
                 I don't found pages where are information that is similar to my game

Sina schober 2D