Industrial Excursion ( Yangon Division, Myanmar)

Presentation for The industrial excursion

Presentation for The industrial excursionTo No.3 Steel Mill (Ywar Ma) and No. 2 Steel Mill (Myaung Taka)11/25/201411st Year students from the department of Metallurgical Engineering and Material Science (YTU)

11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)2To No. 2 Steel Mill ( Ywar Ma)Production of Tungsten SteelProduction of Steel BilletsProduction of Bolts, Nuts and WashersProduction of Steel BladeProduction of wire coils

To No.3 Steel Mill (Myaung Taka)11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)3

11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)4

Raw Material, Iron ore or recycled iron cutting pieces are started to melt at 1538COxygen, Nitrogen, Argon are released as a by product Calcium carbonate is precipitatedFormation of steel billets11/25/201451st Year students from the department of Metallurgical Engineering and Material Science (YTU)

Process of Manufacturing Steel Billets11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)6Collecting Raw Materials in an electric arc furnaceMeltingTapping in the ladle and refining the furnaceTransferContinuous CastingCuttingCooling

Raw Material: Scrap metal (by means of a bucket or magnet) Scrap metal are put systematically and methodically unless the furnace is destroyed.

1. Collecting Raw Materials in an electric arc furnace11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)7

Big and heavy scratch

Carbon, Silicon, and ManganeseMedium Scratch

In 15 ton pot we need to put 18 ton of scratch to get a 15 tons of molten iron. Carbon % ------^ Manganese inversely proportional C, S,Mn depends on QC7

2. Melting11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)8Oxidation processMelting point at 1538C Need to heat till the temperature of 1620CMolten to get a liquid steelAn electrical currentis combined with chemical energy to heat the scrap to a near molten state.Forming slag as bubbles on top of the molten steel is removed

3. Refining the furnace11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)9When the molten steel is reached to 1620C, the molten steel is poured into the ladle.The temperature and the chemistry are adjusted not to freeze the molten steel.The gas, nitrogen and argon, and carbon, silicon is inserted for its chemistry and quality control.

What is Ladle?11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)10Burnt magnesium carbon is the main ingredient.The bricks need to seal with two layers.Between the bricks and the ladle, there must be the poly.The molten liquid is very secretive through the bricks it can harm the harm the ladle.Two holes at the bottom: one for the gases and one for flowing the molten.Can use the one ladle for 30 times.

Ladle11/25/2014111st Year students from the department of Metallurgical Engineering and Material Science (YTU)Lateral ViewTop View

4. Transfer11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)12The molten liquid steel in the ladle is carried along by the crane to the continuous casting machine.

5. Continuous Casting 11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)13the ladle gate is opened and the molten steel is allowed flow in a controlled matter into a tundish.The tundish must be preheated between 900-1000CThis steel flows into three billet moulds. The steel billets are formed.

6. Cutting and Cooling 11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)14Molten hot steel billets are cut and cooled to get the steel billets with the desired lengths by the customers. It is cooled with chemical and water bath as semi-product.125mmx125mmx12m(or)6m1.5 ton per billet



Process of Manufacturing steel billets

Raw materials from steel billetsUsually diameter form between 5.5 mm to 8mmTwo kinds of wire: raw hard wire, galvanized wireNeed to be descaled the billets before the billets be ductile Manufacturing wire and wire drawing11/25/2014171st Year students from the department of Metallurgical Engineering and Material Science (YTU)

Process of manufacturing wire11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)18Wire DrawingCleaningPatentingGalvanising

1. Wire drawing11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)19The billets are put through the wire drawing machines Desired customized diameter is being compressed through dies.


2. Cleaning11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)21Not the wire be corroded


4. Galvanizing11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)23To be galvanized, the cooled wire is passes through the molten zinc bath between 430-470C.It passes through the ammonium chloride, charcoal oil, engine oil solution for best adhesion property. the excess zinc is removed by air blowing.Then they are coiled for each wire.



Wires drawn from Galvanizing process

11/25/2014261st Year students from the department of Metallurgical Engineering and Material Science (YTU)RealismCartoon Picture

5. Shaping11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)27

11/25/2014281st Year students from the department of Metallurgical Engineering and Material Science (YTU)







11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)35Four stages in one machineCuttingThreadingHeading Trimming Production of house nails



To prevent corrosion

11/25/2014381st Year students from the department of Metallurgical Engineering and Material Science (YTU)MachineSand

two kinds of bolts: HSB, High tension bolt and TSB, Torque shear bolt There two kinds of forming: cold forming and hot formingWasher be obtained from 35% of the raw materials Production process of Bolts, Nuts and Washers11/25/2014391st Year students from the department of Metallurgical Engineering and Material Science (YTU)

Production of bolts11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)40There are four stages in hot and cold forming of bolts: CuttingFormingHeadingMarkingTrimming

40


Formation of bolts

11/25/2014421st Year students from the department of Metallurgical Engineering and Material Science (YTU)Machines descriptionMachine

Residual Chips11/25/2014431st Year students from the department of Metallurgical Engineering and Material Science (YTU)







Production of Nuts11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)50The stagesCutting offForming 1Forming 2Forming 3Forming 4Forming 5Before/ After Nut tapping








Production of Washers11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)58


11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)60dfdff



Galvanizing11/25/2014631st Year students from the department of Metallurgical Engineering and Material Science (YTU)


Formation of steel plates11/25/2014651st Year students from the department of Metallurgical Engineering and Material Science (YTU)


Chemical Composition Shape and Design Dimension Hardness Tensile Strength Torque Testing Stress Vs. Strain Corrosion Wave Shearness, Crack

Quality Control 11/25/2014671st Year students from the department of Metallurgical Engineering and Material Science (YTU)


Special Thanks To11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)69

11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)70Referenceswww.pacificsteel.com www.tenaris-steel.comwww.madehow.com

11/25/20141st Year students from the department of Metallurgical Engineering and Material Science (YTU)71May Pwint Phyu May Myat Thu Hsu Hsu HtetMay Zin ThuPhue Myat ThawChaw Su Thet HtarHtet Thazin Zaw Cherry Wint Hlaing Yamin OoMya Phu Pwint ThitDevelopers