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SHIELDING GASES
Shielding gas is directed by the torch to the arc and weld pool to protect the electrode and the molten weld metal from atmospheric contamination.
Argon and helium or mixtures of the two are the most common types of inert gas used for the shielding. Argon hydrogen mixtures are used for special applications.
Batch Furnaces: An insulated, the heating system, chamber for placing the job, and a door or various doors for placing the job in place are the necessity of these furnaces. T
Cast Al Alloys Low melting temperature, good surface finish and insolubility to gases except H 2 are characteristics of these alloys. Significant drawback of cast aluminium a
triangle law of forces
What is UPR Novel architecture for complete CAD data exchange, called the Universal Product Representation (UPR).
Determine- cutting speed, Material removal rate and Machining time. A 150 mm long 12.7 mm diameter stainless steel rod is being turned to 12.19 mm diameter on a centre lathe.
Q. Corrosion in Steam Condensate System? Carbon dioxide and oxygen, either acting alone or in combination, account for the majority of steel corrosion problems in the condensat
Follow board pattern This type of pattern is adopted for those castings where there are some portions which are structurally weak and if not supported properly are likely to br
parllelo gram law
Working of boiler : Water is filled in boiler shell through the feed valve up to 2/3 rd of shell. Water flows down through the down take header by means of descending wa
First Gear Position : When gear M1 is in mesh with gear C1 then this is first gear drive position. The gear C1 is freely attached to counter shaft, so gear C1 itself cannot rotate
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