Question 1: What type of treatment before the melting of iron ore

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Task 1
Having examined the chapter 1.1.
Question 1: What type of processing iron ore before smelting allows to increase the output of the metal?
1) split;
2) milling;
3) screening;
4) enrichment;
5) agglomeration.
Question 2. What is the main fuel for the blast furnace?
1) natural gas;
2) fuel oil;
3) charcoal;
4) coke;
5) coal dust.
Question 3: Which process is subjected ore in a blast furnace?
1) oxidation;
2) indirect restoration;
3) restoration of direct;
4) desulfurization of metal;
5) recovery of phosphorus.
Question 4: Which product is the blast furnace to be melted into steel?
1) slag;
2) blast furnace gas;
3) pig iron;
4) cast iron;
5) ferroalloys.
Question 5. What is the direct reduction of iron ore?
1) kind cokeless metallurgy;
2) process conducted outside the blast furnace;
3) chemical-thermal process of direct reduction of iron ore;
4) the processing of ore with low content of harmful impurities;
5) process contributing less saturated metal phosphorus and sulfur.

Task 2
Having examined the chapter 1.2.
Question 1. The metal stock can go ...
1) pig iron;
2) steel scrap;
3) products from direct reduction of iron ore;
4) ferro-alloys;
5) all of the above.
Item 2. In the first step of the process of producing steel primarily oxidized ...
1) silicon;
2) manganese;
3) iron;
4) phosphorus;
5) carbon.

Question 3: What kind of gas is "boiling metal" in the second stage of melting?
1) Carbon;
2) carbon monoxide (II);
3) hydrogen;
4) oxygen;
5) nitrogen.
Question 4: What is the method of casting and crystallization steel is considered the most progressive?
1) cast-iron molds;
2) in the sand mold;
3) in the water-cooled mold for continuous casting machine;
4) pereplavnoy process using water-cooled molds;
5) basalt molds.
Question 5. Which of the following alloying elements can be added to the steel in the ladle right?
1) nickel;
2) cobalt;
3) titanium;
4) molybdenum;
5) copper.

Activity 3
Having examined the chapter 1.3.
Question 1. For some steels used in the processing plant for the circulating steel degassing?
1) ordinary quality;
2) quality;
3) high quality;
4) osobovysokokachestvennye;
5) doped.
Question 2. At what expense to install for RH vacuum degassing is achieved by increasing the surface?
1) multiple repetition of the process;
2) breakdown into droplets of metal;
3) flushing with an inert gas;
4) removing hydrogen;
5) evacuation.
Question 3. What is the method of processing molten metal degassing provides it?
1) The treatment of steel in the ladle;
2) grinding the metal stream gases;
3) The vacuum degassing in a stream during its overflow;
4) introducing inert gases;
5) increase of the surface degassing.
Question 4: What is the purpose of processing steel synthetic slag?
1) removal of the oxygen;
2) desulfurization;
3) removal of non-metallic inclusions;
4) reduction in the silicon content;
5) improving hladnostoykosti steel.
Question 5. A feature pereplavnyh processes is:
1) vacuum or protective slag bath;
2) heavy water heat transfer through the walls of the mold;
3) directed heat;
4) Sequential solidification small quantities of molten steel;
5) all of the above.

Task 4
Explore chapter 2.1.
Question 1. What is the process of casting operation is the first?
1) forming;
2) melting;
3) alivki;
4) knockout;
5) purification.

Question 2: Which of the requirements of GOST 26645-85 for castings is the main?
1) the mechanical properties of the casting material;
2) Class of dimensional accuracy of the casting;
3) the degree of warping elements castings;
4) the degree of accuracy of the cast surface;
5) The surface roughness of the castings.
Question 3. What property determine

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