Nzev S Autor SCOPt Uhersk Brod Ing Hana

Název SŠ: Autor: SŠ-COPt Uherský Brod Ing. Hana Kubišová, Ph. D. Název prezentace (DUMu): Metallic Materials Název sady: Číslo projektu: Datum vzniku: Technical English for students of study branch Technician Gunsmith 2 nd, 3 rd and 4 th class CZ. 1. 07. /1. 5. 00/34. 0727 17. 1. 2013 Uvedení autoři, není-li uvedeno jinak, jsou autory tohoto výukového materiálu a všech jeho částí. Tento projekt je spolufinancován ESF a státním rozpočtem 1ČR.

ANOTACE Záměrem této sady výukových materiálů s názvem Technical English je ukázat žákům, kteří se v této oblasti vzdělávají, jaký byl vývoj zbraní. Jednotlivé DUMy (prezentace) v této sadě popíší postupně tematické oblasti, které jsou probírány v předmětu Anglický jazyk na naší SŠ. Konkrétně tato prezentace je zaměřena na kovové materiály. 2

3

v Do you know a geometrical characteristic of powder? v Could you tell me the basic parts of the ball bullets? v What is explosive? v Which materials are used for production of explosives? v What materials are not used for productin of explosives? 4

5

v Highlights from the most widely are technical alloys in which iron predominates. v It is an alloy of iron with carbon and other elements. v Divided into two groups : v a wrought iron-iron with a carbon content of 2, 14% v a malleable iron-steel with a carbon content 6

v Steels are divided into nine classes. v Basic numeric steel grade is a five-digit number. v Additional digits are separated from the basic numeric signs dot. 7

v Steel is an alloy of iron and carbon with max. 2. 14% C and flanking elements like Mn, Si, P, S, Cu. v Steels also contain alloying elements -Cr, W, Mo, V, Ni, etc. v We classified steels according to: v design and tooling, v a chemical composition. 8

STEEL GRADE 10 XXX Steel of this class has got the following properties: v is the cheapest, v has got a low content of C, v is weldable and machinable, v is used for construction and metalwork, bridge building, crane and marine structures, 9

STEEL GRADE 11 XXX v This steel has got a prescribed purity guaranteed tensile strength and a chemical composition. v Steel is stepped according to C. v Steel is used to: v car bodies, screws, stampings, forgings, pins, shafts, small gears, piston rods, etc. v Steel can be cement and cultivate. 10

STEEL GRADE 12 XXX v This steel is a stainless carbon. v These steels are divided into three groups: v steels for case hardening-carbon content from 0. 06% up to 0. 2% C, v stainless steel for coating-carbon content from 0. 25% up to 0. 7% C, v steels for surface hardening-carbon content from 0. 4% up to 0. 6% C. v This steel is used for the production of 11

STEEL GRADE 13 XXX v It is a steel alloy in which the predominant element manganese. v This steel is suitable as a spring. STEEL GRADE 14 XXX v It is a steel alloy chromium. v This type of steel is the most important 12

STEEL GRADE 15 XXX v This steel has got a large number of ingredients predominates chroma molybdenum. v This steel is good through-hardened. v This steel has got a good corrosion resistance. STEEL GRADE 16 XXX v Steel is alloyed with nickel. 13

STEEL GRADE 17 XXX v This is a structural steel with special properties. v This steel is a stainless, heat-resistant, creep and special. v This steel is used in food and chemical industry, as well as for the production of washing machines, centrifuges, cutlery etc. STEEL GRADE 18 XXX v This steel is used for welding wires, electrodes 14

STEEL GRADE 19 XXX v This steel is a tool. v Tool steel is a stainless steel. v Tool steel is divided into: v carbon, v alloy, v speed. 15

v Cast irons are alloys of iron and carbon, silicon, manganese and other elements. v The amount of carbon in the alloy is greater than 2. 14%. v Cast iron also contains alloying elements. v Grey cast iron is divided into alloyed and unalloyed. v The numbers in the gray cast iron is 16

v A ductile iron is an important construction material. v It is produced by adding magnesium. v After casting graphite is eliminated in the form of pellets. v The first two digits are 42, the second two digits is 23, third two digits indicates the value of the ultimate 17

v Malleable cast iron is tough and easily workable material. v Malleable cast iron forms a transition between steel and gray cast iron. v Malleable cast iron is produced by heat treatment of white cast iron. v The first two digits are 42, the second two digits is 25, third two digits indicates the value of the ultimaterial. 18

v Furthermore use the production: v non-ferrous metals and their alloys, v heavy non-ferrous metals and their alloys, v light non-ferrous metals and their alloys, v special alloys of non-ferrous metals, v metal powders. 19

20

v What is steel? v Do you know the classification of steel? v What do you know about steel grade 10? v What do you know about steel grade 11? v What do you know about steel grade 12? v What do you know about steel grade 13? v Do you know the difference between steel grade 14 21 and steel grade 15?

22

v Steel is classified according to design and tooling, a chemical composition. v Basic numeric steel grade is five-digit number. v Additional digits are separated from the basic numeric signs dot. v The highest quality of steel grades are 23

v Class 10 has got the lowest quality. v The production also use iron alloys and cast iron. v We cast gray, ductile and malleable. v The first two digits of the cast iron is 42. 24

25

v KŘÍBEK, J. Střelné zbraně I. část, 2. vyd. Brno: PC-DIR spol. s. r. o. , 1995. 26