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The Welder

2012-04-20 by seoer6

Important events this week: to move. Work events: grinding, installation of rubber, leather, carbon steel Welding Electrode screws, install the gasket and rubber pad (positions Wai four weeks to withstand the cover) the blink of an eye, a month and a half later, there is a gratifying thing is that we want to change residential areas, (one room, two halls, washing machines, televisions, water heaters, etc.) before a lot, from the factory may be close to the point, living in the Sea View Garden "a lot of high-rise one piece, so called floor area, living in 12 upstairs floor with elevator, very convenient. Basically no matter what the living had grinding, grinding mill more beautiful to look better, more durable and do not know ... a week beginning the first day of grinding, continue our positions as a position in the earliest completion of all installation welding and grinding work. next Monday shipowners for inspection, start welding small box gear position confining walls of the place of convergence, so hard solder, welders master is also a fee of nine cattle and the strength of a tiger to weld it finished bad welding people have drill inside and must lay the space of more than 20 cm can be imagined. ~ First disc grinding, sanding is not good to get the task which is not good grinding-for-straight grinding, and must be lying down which is very awkward afternoon mounting screws are not a nut screw the end of the tip for Welding Rod, First measurement of the head of each screw good position confining walls of the installation location and then marked, then we put the screws are put up on the first welding ~ the next day polishing, grinding the screws do not round the end of the welding screw so grinding and screw size, the three of us split up, grinding day was basically completed the third day to install the rubber pads, and gaskets, than grinding else is difficult, and hand Ye Hao acid ~ is simply wrapped up day completed the fourth day we debug the cover weigh whether each tight pressure in the end with the rubber around the fifth day we installed the rubber skin (left and right sides to cover the corner), and one day this week tasks very heavy, also very good, all our team tangent.

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Points should be notified to the use of stainless steel electrode

2012-05-15 by seoer8

A chromium stainless steel with corrosion (oxidation acid, organic acids, cavitation), heat and abrasion resistance. Typically used in power plants, chemical, oil and other equipment and materials. Chromium stainless steel Welding Wire poor, should pay attention to the welding process, heat treatment conditions and selection of suitable welding.2, chrome 13 stainless steel welding, hardening of large, prone to crack. The use of the same type of chromium stainless steel electrode (G202, G207) welding, preheat and post weld more than 300 â„ƒ, 700 â„ƒ about slow cooling processing. Weldment can not weld heat treatment, you should make use of chrome-nickel stainless steel electrode.3 17 stainless steel, chrome, to improve corrosion resistance and weldability appropriate increase in the amount of stability elements of Ti, Nb, Mo, welding better than the chrome 13 stainless steel. Using the same type of chromium stainless steel electrode (G302, G307) should be carried out more than 200 â„ƒ preheat and post weld tempering around 800 â„ƒ. Weldment can not be heat treated, chrome-nickel stainless steel electrode should be selected.4, chrome-nickel stainless steel electrode has good corrosion resistance and oxidation resistance, widely used in chemical, fertilizer, petroleum, medical machinery manufacturing.5, chrome-nickel stainless steel welded carbide precipitation by repeated heating and reduce the corrosion resistance and mechanical properties.6, drug skin of chrome-nickel stainless steel with titanium calcium type and low-hydrogen type. Titanium calcium type can be used for AC-DC, AC Welding Electrodepenetration is shallow, and easy to redness, so as far as possible with DC power supply. Diameter of 4.0 and below can be used for all position welding of 5.0 and above for flat butt and fillet weld.7, the electrode should be used to keep dry, lime-titania type shall be approved by the dry one hour of 150 ° C, low hydrogen type should be dried by 200-250 ° C 1 hour (can not be repeated drying, otherwise the drug leather easy to crack and peel off) to prevent the electrode drug skin sticky oil and other dirt, so as to avoid causing the weld to increase the carbon content and impact of welding quality.8, in order to prevent corrosion between the eyes, the welding current is not too large, about 20 percent less than the carbon steel electrode, the arc should not be too long, rapid cooling between layers, in order to narrow weld heating is appropriate.

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